Development & Reproduction
Korean Society of Developmental Biology

T Lymphocyte Development and Activation in Humanized Mouse Model

Ji Yoon Lee, A-Reum Han, Dong Ryul Lee
Corresponding Author : Dong Ryul Lee, Department of Biomedical Science, CHA University, Seongnam 13488, Korea. Tel: +82-31-881-7136, E-mail:

© Copyright 2019 The Korean Society of Developmental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Mar 29, 2019 ; Revised: Apr 12, 2019 ; Accepted: Apr 28, 2019

Published Online: Jun 30, 2019


Humanized mice, containing engrafted human cells and tissues, are emerging as an important in vivo platform for studying human diseases. Since the development of Nod scid gamma (NSG) mice bearing mutations in the IL-2 receptor gamma chain, many investigators have used NSG mice engrafted with human hematopoietic stem cells (HSCs) to generate functional human immune systems in vivo, results in high efficacy of human cell engraftment. The development of NSG mice has allowed significant advances to be made in studies on several human diseases, including cancer and graft-versus-host-disease (GVHD), and in regenerative medicine. Based on the human HSC transplantation, organ transplantation including thymus and liver in the renal capsule has been performed. Also, immune reconstruction of cells, of the lymphoid as well as myeloid lineages, has been partly accomplished. However, crosstalk between pluripotent stem cell derived therapeutic cells with human leukocyte antigen (HLA) mis/matched types and immune CD3 T cells have not been fully addressed. To overcome this hurdle, human major histocompatibility complex (MHC) molecules, not mouse MHC molecules, are required to generate functional T cells in a humanized mouse model. Here, we briefly summarize characteristics of the humanized mouse model, focusing on development of CD3 T cells with MHC molecules. We also highlight the necessity of the humanized mouse model for the treatment of various human diseases.

Keywords: Humanized mouse model; T cell development; MHC mol-ecules; Stem cells


Humanized mouse model is defined as immunodeficient mice engrafting functional human cells and tissues (Walsh et al., 2017). Generally, the humanized mouse model is reconstituted with human blood derived CD34+ stem cells from cord blood (CB), bone marrow (BM), and peripheral blood (PB) (Mosier et al., 1988; Lapidot et al., 1992; Shultz et al., 1995). Owing to continuous development of humanized mouse model, investigators have been able to study for immune response between human immune cells constructed from stem cells and therapeutic cell sources in vivo. Recipient mice are used as surrogates of human biology and diverse pathologic condition such as leukemia, breast cancer, autoimmune disease, and regenerative medicine (Lee et al., 2015). However, the mouse environment is incongruent with that seen in humans, for example, de novo drugs and human pathogens are species-specific and innate immune system (Walsh et al., 2017), thus, the humanized mouse model is considered as an important tool for biomedical research. In particular, it is an emerging as an in vivo platform to screen immune responses. Irradiated immunodeficient mice that receive human stem cells via intravenous injection and CD34+ stem cells migrated and engrafted into the BM, and subsequently circulated into PB after hematopoiesis. In order to model human immune systems, investigators first have been studying immunodeficient mice using engrafted human cells from hematopoietic stem cells (HSCs) (McCune, 1988; Shultz et al., 2012). Additionally, humanized mice can facilitate studies on immune response caused by human leukocyte antigen (HLA) mismatching and on human diseases such as cancer (Henderson, 1994; Hu, 2016; Morton, 2016; Serr et al., 2016; Luce et al., 2018). A humanized model is required to study immune responses in vivo because results of in vitro culture conditions cannot properly represent immune crosstalk. Despite this requirement, humanized mouse models have limitations in terms of reconstruction of the hemato-lymphoid system due to insufficient availability of human epitopes. Although humanized mice maintain cross-reac­tivity by supporting the tolerance of the mouse cells towards transplanted human thymic tissues, regenerated T cells do not show adequate development for maturation with the HLA, which results in the failure of T cell activation (Obenaus, 2015; Kooreman et al., 2017). First, Ito M et al. and Shultz LD et al. developed advanced Nod scid gamma (NSG) (IL2rgnull, NOD/ShiLtSz-scid/IL2Rgnull(NOD. Cg-PrkdcscidIl2rgtm1Wjl/SzJ) mice, with a mutation in the IL-2Rr chain, which optimally support human T cell development (Ito et al., 2002; Shultz et al., 2005). Development of non-obese, diabetic mice with the Nod-scid gamma mutation was an advancement compared to the NSG mice developed previously. This proved to be a breakthrough in the development of humanized mouse models. This strain is more suitable for the generation of human T cells, as compared to the previous mouse strains such as C.Cg-R ag2 t mFwa I l2rg t m Sug and C; 129S4- Rag2 t mFlv I l2rgt m 1Flv/J. (Traggiai et al., 2004; Song et al., 2010). All strains showed enhanced engraftment of human HSCs, long life span, and production of functional immune responses, but, their efficacy was low. It was difficult to evaluate the crosstalk between lymphoid cells and pathogens. In this review, we summarize basic T cell development in the thymus of humanized mice, and suggest a solution to generate functional human T cells in a humanized mouse model. Also, we briefly review the achievements, recent trends, and the challenges in development of the humanized mouse model, which closely mimics human physiological environments in terms of hematology, immunology, and regenerative medicine.


Since Strowig T et al. showed that cytotoxic and cytokine releasing T cells can target latent Epstein-Barr virus (EBV) antigens using HLA-A2 transgenic mice (Strowig et al., 2009), Leonard D. Shultz et al. also reported the development of a homozygous major histocompatibility complex-I (MHC-I) expressing humanized mouse model, and demonstrated the functionality of cytotoxic human T cells (CTLs) in EBV infected humanized mice (Shultz et al., 2010). Many approaches using MHC mutations have allowed the establishment of HLA restricted humanized mouse models to study human immune systems (Watanabe et al., 2009; Jaiswal et al., 2012; Billerbeck et al., 2013; Thomas S, 2014). In the early stages of development of a humanized mouse model for T cell development, disease causing viruses, such as the EBV and the dengue virus that infect only humans, were mainly used to induce functional lymphocytes. Major or minor histocompatibility complexes including HLA-A2 and HLA-DR4 are common targets to induce genetic defects in a humanized mouse model. Danner R et al. reported the importance of HLA class II molecules in developing human lymphocytes, in a humanized mouse model (Danner, 2011). Several studies have consistently reported generation of HLA-DR restricted T cells with enhanced immunity in humanized mouse models (Suzuki, 2012; Billerbeck et al., 2013; Masse-Ranson et al., 2019). Although development of functional T cells in humanized mouse models has shown advancement in comparison to previous experiments, the production of T cells stimulated by human epitopes failed in xenograft models. To overcome this issue, amp-peptide with poly I:C, artificial mimetopes, and human viruses were directly injected into humanized mice (Serr et al., 2016; Coleman et al., 2018; Kruse, 2018). Also, the tumor associated antigen, Wilms tumor 1 (WT1), was recognized by human CD8 T cells in NSG mice (Najima et al., 2016). It was the first study to show that human mature T cells recognizing specific antigens can be generated in the humanized mouse model without genetic modification. These approaches have partly enabled us to reveal details of the dynamics of T cell reconstitution in humanized mice. To effectively investigate the crosstalk between immune cells and pluripotent stem cell derived cells in vivo, functional lymphocytes, which show HLA-restricted cytotoxicity, can be used. Although these trials have continuously enhanced cancer antigen specific T cells as well as HLA restricted T cells for regenerative medicine, the development of long-term hemato-lymphoid cells, including cytotoxic T lymphocytes (CTLs), in humanized mice is still in its infancy due to low alloreactivity (Andre, 2010; Kooreman et al., 2017). In vivo experiments for immune rejection by HLA types are considered crucial for the verification of stem cell derived therapeutic source safety in regenerative medicine. Because of obstacles related to in vitro studies in screening omnidirectional dynamics of immune responses, development of in vivo platforms such as humanized mouse models is essential. So far, there has been considerable advancement in the development of humanized mouse models and we propose the importance of HLA mis- and matched cells as a novel strategy to stimulate thymocyte development in advanced humanized mouse models, given the effective usage of HLA mis- and matched cells in stimulating the CD4+CD8+ thymocytes (Fig. 1). We provide a simplified table with explanation for pros and cons of humanized mouse model by cell sources (Table 1).

Fig. 1. The schemfatic diagram depicting the advancements in the concept of humanized mice model; xenografted mouse model has a limitation in providing information for crosstalk between human immune and stem cells. Next, BLT transplanted humanized mouse model allows mature thymic epithelial cells to effectively develop T cells, leading to SP cells. As future strategies, we also suggest that humanized mouse model using cord blood derived CD34+ cells with homozygous HLA will be used as a vivo platform to screen immune response by HLA (mis)matched types. BLT, bone marrow, liver, thymus; SP, single-positive; HLA, human leukocyte antigen.
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Table 1. The pros and cons of humanized mice by human stem cell and tissues transplantation
Cell sources Pro Con Ref.
PBL Human PB lymphocyte 1. Easy to establish 2. GVHD model 1. Inability of human LT-HSC Mosier et al., 1988; Tary-Lehmann et al., 1995
2. Good model for xenogeneic GVHD 2. Anergic naïve and memory T cells Gleichmann et al., 1984; Garcia et al., 1997; Tary-Lehmann and Saxon, 1992
3. Initiation to generate lymphoid cells 3. The lacks of functional human lymphoid cells Tsuchida et al., 1997; Dessureault et al., 1997; Tary-Lehmann and Saxon, 1992
4. Uncontrolled B cell activation Williams et al., 1992; Abedi et al., 1992; Gleichmann et al., 1984
SRC Hematopoietic stem cells from a variety of sources 1. Establishment of  LT-HSC 1. The lacks of educated human T cell Hiramatsu et al., 2003; Ishikawa et al., 2005; Melkus et al., 2006
2. Generation of human immune system 2. Restriction system for genetic traits Cany et al., 2013; McCune et al., 1988; Smith et al., 2016
3. High engraftment of NK cells and CD3 lymphoid cells 3. Uncontrolled or spontaneously generation of B cells without maturation Manz, 2007; Melkus et al., 2006
BLT Human BM, liver, thymus 1. Environmental mimicking and complete human immune system 1. Inadequate for all HLA types McCune et al., 1988; Wege et al., 2008; Smith et al., 2016; Melkus et al., 2006
2. Generation of HLA restricted T cells 2. Requirement of human epitopes for high diversity Shultz et al., 2010; Takaki et al., 2006; Niens et al., 2011; Ishikawa et al., 2005
3. Human mucosal immune system completion 3. The developmental failure of GVHD McCune et al., 1988; Lan et al., 2006; Karpel et al., 2015; Lavender et al., 2013

PBL, peripheral blood lymphocyte; PB, peripheral blood; GVHD, graft-versus host disease; LT-HSC, long term hematopoietic stem cell; SRC, scid repopulating cells; NK, natural killer; BLT, bone marrow liver thymus; BM, bone marrow, HLA, human leukocyte antigen.

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In a humanized mouse model, blood cell reconstitution from adult HSCs was already confirmed in various conditions (Traggiai et al., 2004). HSCs are derived from human origins such as cord blood, bone marrow, and peripheral blood, but, thymic epithelial cells for human cell generation in a humanized mouse model are of mouse origin. Secondary lymphoid tissues (SLT) such as the thymus and lymph nodes are essential to completely mimic the human immune system in the mouse model (Takahama, 2006; Li et al., 2018). Amid these, human thymic epithelial cells, which express MHC molecules, have an affinity for CD4+ and CD8+ T cells and play a role in the recognition, maturation, and development of lymphocytes (Li et al., 2005; Danner, 2011). Mouse has thymic epithelial cells with mouse MHC class molecules, such as H-2K, H-2D, H-2L, I-A, and I-E, which affect the development of T cells. Because these molecules are not presented in a similar sequence as that of human MHC molecules, mouse thymic epithelial cells are fundamentally limited in mimicking human organs. However, mouse thymic epithelial cells are fundamentally limited in mimicking human organs, because mouse MHC molecules are not presented in a similar sequence as that of human HLA molecules. Lympho-stromal interactions in the thymus play a pivotal role in T cell development and maturation based on the expression of T cell receptors (TCRs) during negative selection. The mouse thymic environment can partly provide specified cytokines required for the development of human T cells. However, the mouse MHC class is limited for the development of specific human HLA molecules, which ultimately results in failure of T cell development. These T cells are often biased and it failed to successfully present active human cell phenotypes, expressing CD45RO due to insufficiency of human epitopes (Kooreman et al., 2017). T cells are derived from HSCs, which can differentiate into various lineages of blood cells. In the postnatal stage, HSCs are first generated in the bone marrow, and then migrate into the thymus via peripheral blood, and begin to develop into T cells (Lambolez, 2006; Takahama, 2006). The progenitors of T cells within the thymus are known as thymocytes, which undergo several steps of maturation. The degree of maturation of thymocytes can be identified in terms of expression of some cell surface markers. Early T lymphocyte progenitors in the cortex of the thymus are defined as double negative (DN) thymocytes, which do not express CD4 and CD8 co-receptors (Punt JA, 1996). These DN cells with the CD44+CD25+ phenotype in the cortex can further differentiate into CD4 and CD8 double positive (DP) cells via TCR beta-selection (Prinz et al., 2006; Fayard et al., 2010). As selected cells have a stably rearranged TCR-β chain locus, these cells successfully acquire CD3 molecules, and express the CD4 and CD8 co-receptors (Fehling, 1995; Bruno, 1996). In contrast, cells which cannot undergo beta-selection die via apoptosis. T cells that have survived beta-selection rearrange their TCR-alpha chain loci to produce an αβ-TCR (Chan, 1993; Davis et al., 1993). Re-arrangement of TCRα locus has been conducted; T cells expressing the full TCR as well as CD4+CD8+ cells are termed ‘double-positive’ (DP) cells. DP T cells are capable of interacting with MHC molecules. This involves the signal by double-positive precursors that express either MHC Class I or II restricted receptors. DP cells selected on MHC class I and II will become CD8+ and CD4+ cells, respectively. The cells will become single-positive, either CD4+ or CD8+ T cells (SP cells), after downregulation of the non-selected co-receptors. SP cells then undergo negative selection, which is defined as tolerance of self by elimination of T cells binding with self MHC molecules in the medulla region. T lymphocytes become naïve CD4 or CD8 cells which express CD45RA via negative selection step and then enter peripheral circulation (Fig. 2, left panel). Since T cells which have completely accomplished their development in thymus have functional acquirements in the peripheral circulation, negative selection in humanized mouse models must therefore be performed entirely by the human MHC molecules. To acquire the immune susceptibilities with high diversity for human cells, education of T cells by repetitively injecting mismatched human cells, as well as by transplantation of the human bone marrow, liver, thymus (BLT) transplantation. NSG mouse for humanized model partially supported the maturation of T and B cells (Peault et al., 1991; Ishikawa et al., 2005; Brainard et al., 2009); but thymus of NSG mice do not express HLA molecules (Thomas et al., 2014). Thus, NSG humanized mouse with T cell development lacks the capability to recognize human antigens in an HLA-restricted manner. To overcome the technical limitation, Shultz et al. developed the NSG-HLA-A2/HHD strain expressing HLA class I and showed the functional HLA-restricted cytotoxic T cells in the EBV infection, which is restricted HLA-A2 antigen. This indicates the recognition and education of human HLA in functional thymus of NSG (Shultz et al., 2010). Differentiation of T cells in NSG-HLA-A2/HHD mouse recapitulates the development of normal human T cells in vivo. The human T progenitors as well as humanized microenvironment are required to educate human T cells. From NSG-HLA-A2/HHD mouse, advanced NSG mouse expressing the HLA class I molecules including HLA-A*0201 and A*2402 was established and developed by injection of human specific antigen WT1 peptides (Najima et al., 2016). This humanized mouse model led us to an advanced platform to study for immune stress response in terms of HLA mis/matched therapeutic stem cells and human viruses such as hepatotropic virus (Billerbeck et al., 2013). Al­though it is commonly believed that mouse thymus is not enough to entirely develop human T cells, the human mimicking signals, critical factor DLL4, and chemokines including Ccl25 and Cxcl12 may directly work to improve the thymic function and support diverse TCR repertoire (Zakrzewski et al., 2006; Halkias et al., 2013; Velardi et al., 2014). However, because mouse thymic environment for negative selection of human cells is insufficient, regulatory T cells (Treg cells) fail to functionally develop in NSG mice (Halkias et al., 2015); implying that T cell development still remains immature. To compensate thymic environment from humans, BLT seeding was applied in the humanized mouse model (Peault et al., 1991; Covassin et al., 2013; Brugman et al., 2015; Chung et al., 2015; Tuckett et al., 2017). Although BLT transplantation showed that donor specific HLA molecule is confirmatively augmented in medullary lymphocytes, lymphocytes are rapidly saturated in terms of transplanted cell numbers, suggesting the vitality of thymic epithelium rather than high HSCT cell numbers in T cell development. A brief schematic diagram for T cell development in the thymus is shown in Fig. 2 (right panel).

Fig. 2. The schematic diagram presents the development of T cells in thymus. Early T lymphocyte progenitors in cortex of the thymus are defined as double positive (DP) thymocytes. In the medulla region, DP precursors are acquired to facilitate maturation by MHC molecules. The negative selection procedure is completed by apoptotic cells which failed to eliminate the T cell receptor and to convert to single positive (SP) cells. Although thymus environment of mouse does not fully support HLA expression in T cells, human mimic factors including Notch signal factor DLL4 and chemokines such as Ccl25 and Cxcl12 can contribute expression of HLA molecules. MHC-I can bind with CD4+ T cells and MHC-II class has affinity towards CD8+ T cells. Matured T cells can provide information of immune response in terms of donor HLA molecules. MHC, major histocompatibility complex.
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CD3+ T cell responses are initiated in peripheral lymphoid organs by activated antigen presenting cells (APCs) such as dendritic cells and macrophages (Steinman, 1991; Ridge, 1998). Antigens need to migrate to lymphoid tissues via blood, lymph, and APCs. APCs ultimately provide antigen epitopes, also known as signal I, co-stimulatory cytokines such as CD28, CD80/CD86, CD40/CD40L, known as signal II, and cytokines including IFN-gamma, IL-12 and IL-4, known as signal III to naïve T cells (Fitzpatrick et al., 1996; Lenschow et al., 1996; Schoenberger, 1998; Murphy & Reiner, 2002). Three factors are required to stimulate human CD3+ T cells. After binding of MHC molecules with antigens to TCRs on T cells, T cells get activated, differentiate, and expand into effector T cells. The roles of effector T cells in cell- and humoral-mediated immune responses have dynamic effects. Cytotoxicity against pathogens by CD8+ T cells, induction of antibody production in B cells by CD4+ helper T (Th1) cells, and suppression of regulatory T cells (Tregs) to enhance T cell function are mainly regulated by mature immune system. To investigate the immune stress response of CD3+ T cells in a humanized mouse model, development of immunity should be preceded by development of the thymus and lymphocyte development mediated by human MHC molecules. Melkus MW et al. first used superantigen toxic shock syndrome toxin 1 (TSST-1) recognizing dendritic cells in a humanized mouse model to reconstitute human T cells, suggesting that human antigens directly stimulate human T cells in humanized mice (Melkus et al., 2006). Based on this, Lan P et al. first reported successful establishment of a BLT humanized mouse model, wherein they transplanted human tissues including bone marrow derived blood cells, thymic epithelial cells and liver cells (McCune et al., 1991; Lan et al., 2006). An important achievement due to the BLT tissue transplant model as compared to stem CD34+ cells only transplant model, is the ability of engrafted mice to show high antiviral immune responses in vivo (Traggiai et al., 2004; Dudek et al., 2012; Klenerman & Oxenius, 2016). However, this model does not allow long-term survival of humanized mice, and results in a failure of long-term immune response in vivo. Additionally, a long duration is required to achieve significant peripheral human effector T-cell repopulation in humanized mice. Most importantly, such mice show tolerance to human T cells along with lack of HLA restriction. However, the success of the model still remains undefined due to lack of fully stimulation by human HLA antigens. Recently, Kooreman NG et al. emphasized the necessity of allogenized mice, not that of humanized mice, to model the human immune system via allogeneic human embryonic stem cells (hESCs), implying that the humanized status without effector T cells is not completely adequate to achieve T lymphocyte activation to investigate immune rejection by HLA types (Kooreman et al., 2017). For an effective response, HLA molecules and anti-CD3/CD28 antibodies are required as specific ligands for activation of human T lymphocytes, which leads to an allogenized status. Alternatively, reconstruction of TAP-LAP was used to screen immunity by HLA alleles in humanized model. This transgenic mouse model enabled HLA-A molecules to be transported into endoplasmic reticulum, results in increased stability of humanized status in mouse (Huang et al., 2016). Tobias D et al also reported that generation of transgene expressing hypoimmunogenic cells, which modified with depletion of B2M, CIITA and overexpression of CD47, from induced pluripotent stem cells (iPSCs). They first carried out Elispot assay to address hypoimmunogenic properties of their modified iPSCs with splenocytes of humanized mouse model. This is the first evidence for HLA alleles of human cells in humanized mouse model (Deuse et al., 2019). A CD45ROCD45RA+CCR7+ phenotype is a typical marker of naïve T cells. Expression of CD45RO+CD45RACCR7+ from human CD8+ cells (TCM), is widely considered to be a marker of central memory T cells. In contrast, the CD45RO+CD45RACCR7 phenotype is regarded as a marker for T effector memory (TEM) cells, which function as cytotoxic T cells. In particular, CD27 and CD28 are not expressed in TEM cells (Lanzavecchia & Sallusto, 2000; Romero et al., 2007). Thus, optimized lymphoid reconstruction should allow verification of expression of the mature effector CD45RO+CD45RA(CCR7+/ CCR7) phenotype in T cells of the humanized mouse model for the alloimmune response of pluripotent stem cell derived cells.


Development of a humanized mouse model faces several barriers. Suppression of mouse immunity is required to effectively generate human lymphoid cells. Also, expression of HLA alleles is required for the development of human lymphoid immunity. Human specific factors and epitopes, which are not found in mice, must be used for functional lymphocyte development. In addition, reconstitution of a long-term lymphoid cell lineage is possible by the use of human cells. It will be important to investigate whether pluripotent derived stem cells can alter immune rejection responses, in terms of the HLA mis- or matched status, and if a humanized model presents an allogenized status to human HLA molecules. An advanced humanized mouse model will contribute to the analysis of the machinery underlying immunological interactions and recapitulating the humanized mouse model with effector T cells will provide insights for the development of therapeutic strategies.


This work was supported partly by the Bio & Medical Technology Development Program (2017M3A9C6061284) and a Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1D1A1B03031406).



Abedi MR, Christensson B, Islam KB, Hammarstorm L, Smith CL. 1992; Immunoglobulin production in severe combined immunodeficient (SCID) mice reconstituted with human peripheral blood mononuclear cells. Eur J Immunol. 22:823-828


Andre MC, Erbacher A, Gille C, Schmauke V, Goecke B, Hohberger A, Mang P, Wilhelm A, Mueller I, Herr W, Lang P, Handgretinger R, Hartwig UF. 2010; Long-term human CD34+ stem cell-engrafted nonobese diabetic/SCID/IL-2R gammanull mice show impaired CD8+ T cell maintenance and a functional arrest of immature NK cells. J Immunol. 185:2710-2720


Billerbeck E, Horwitz JA, Labitt RN, Donovan BM, Vega K, Budell WC, Koo GC, Rice CM, Ploss A. 2013; Characterization of human antiviral adaptive immune responses during hepatotropic virus infection in HLA-transgenic human immune system mice. J Immunol. 191:1753-1764


Brainard DM, Seung E, Frahm N, Cariappa A, Bailey CC, Hart WK, Shin HS, Brooks SF, Knight HL, Eichbaum Q, Yang YG, Sykes M, Walker BD, Freeman GJ, Pillai S, Westmoreland SV, Brander C, Luster AD, Tager AM. 2009; Induction of robust cellular and humoral virus-specific adaptive immune responses in human immu­nodeficiency virus-infected humanized BLT mice. J Virol. 83:7305-7021


Brugman MH, Wiekmeijer AS, van Eggermond M, van Eggermond M, Wolvers-Tettero I, Langerak AW, de Hass EF, Bystrykh LV, van Rood JJ, de Haan G, Fibbe WE, Staal FJ. 2015; Development of a diverse human T-cell repertoire despite stringent restriction of hema­topoietic clonality in the thymus. Proc Natl Acad Sci USA. 112:E6020-6027


Bruno L, Fehling HJ, von Boehmer H. 1996; The alpha beta T cell receptor can replace the gamma delta re­ceptor in the development of gamma delta lineage cells. Immunity. 5:343-352


Cany J, van der Waart AB, Tordoir M, Franssen GM, Hangalapura BN, de Vries J, Boerman O, Schaap N, van der Voort R, Spanholtz J, Dolstra H. 2013; Natural killer cells generated from cord blood hematopoietic progenitor cells efficiently target bone marrow-residing human leukemia cells in NOD/SCID/IL2Rgnull mice. PLoS One. 8:e64384


Chan SH, Cosgrove D, Waltzinger C, Benoist C, Mathis D. 1993; Another view of the selective model of thy­mocyte selection. Cell. 73:225-236


Chung YS, Son JK, Choi B, Joo SY, Lee YS, Park JB, Moon H, Kim TJ, Kim SH, Hong S, Chang J, Kang MS, Kim SJ. 2015; Co-transplantation of human fetal thymus, bone and CD34 + cells into young adult im­munodeficient NOD/SCID IL2Rgammanull mice opti­mizes humanized mice that mount adaptive antibody responses. Clin Immunol. 157:156-165


Coleman CB, Lang J, Sweet LA, Smith NA, Freed BM, Pan Z, Haverkos B, Pelanda R, Rochford R. 2018; Epstein-barr virus type 2 infects T cells and induces b cell lymphomagenesis in humanized mice. J Virol. 92:e00813-18


Covassin L, Jangalwe S, Jouvet N, Laning J, Burzenski L, Shultz LD, Brehm MA. 2013; Human immune system development and survival of non-obese diabetic (NOD)- scid IL2rgammanull (NSG) mice engrafted with human thymus and autologous haematopoietic stem cells. Clin Exp Immunol. 174:372-388


Danner R, Chaudhari SN, Rosenberger J, Surls J, Richie TL, Brumeanu TD, Casarea S. 2011; Expression of HLA class II molecules in humanized NOD.Rag1KO.IL 2RgcKO mice is critical for development and function of human T and B cells. PLoS One. 6:e19826


Davis CB, Killeen N, Crooks ME, Raulet D, Littman DR. 1993; Evidence for a stochastic mechanism in the differentiation of mature subsets of T lymphocytes. Cell. 73:237-247


Dessureault S, Shpitz B, Alloo J, Rotstein O, Sandhu J, Hozumi N, Fernanders B, Gallinger S. 1997; Physio­logic human T-cell responses to OKT3 in the human peripheral blood lymphocyte-severe combined immu­nodeficiency mouse model. Transplantation. 64:811-816


Deuse T, Hu X, Gravina A, Wang D, Tediashivili G, De C, Thayer WO, Wahl A, Garcia JV, Reichenspurner H, Davis MM, Lanier LL, Schrepfer S. 2019; Hypoim­munogenic derivatives of induced pluripotent stem cells evade immune rejection in fully immunocom­petent allogeneic recipients. Nat Biotechnol. 37:252-258


Dudek TE, No DC, Seung E, Vrbanac VD, Fadda L, Bhoumik P, Boutwell CL, Power KA, Gladden AD, Battis L, Mellors EF, Tivey TR, Gao X, Altferd M, Luster AD, Tager AM, Allen TM. 2012; Rapid evo­lution of HIV-1 to functional CD8+ T cell responses in humanized BLT mice. Sci Transl Med. 4:143ra98.


Fayard E, Moncayo G, Hemmings BA, Hollander GA. 2010; Phosphatidylinositol 3-kinase signaling in thy­mocytes: the need for stringent control. Sci Signal. 3:re5


Fehling HJ, Krotkova A, Saint-Ruf C, von Boehmer H. 1995; Crucial role of the pre-T-cell receptor alpha gene in development of alpha beta but not gamma delta T cells. Nature. 375:795-798


Fitzpatrick L, Makrigiannis AP, Kaiser M, Hoskin DW. 1996; Anti-CD3-activated killer T cells: interferon-gamma and interleukin-10 cross-regulate granzyme B expression and the induction of major histocompati­bility complex-unrestricted cytotoxicity. J Interferon Cytokine Res. 16:537-546


Garcia S, Dadaglio G, Gougeon ML. 1997; Limits of the human-PBL-SCID mice model: severe restriction of the V beta T-cell repertoire of engrafted human T cells. Blood. 89:329-336


Gleichmann E, Pals ST, Rolink AG, Radaszkiewicz T, Gleichmann H. 1984; Graft-versus-host reactions: clues to the etiopathology of a spectrum of immunological diseases. Immunol Today. 5:324-332


Halkias J, Melichar HJ, Taylor KT, Ross JO, Yen B, Cooper SB, Winoto A, Robey EA. 2013; Opposing chemokine gradients control human thymocyte migra­tion in situ. J Clin Invest. 123:2131-2142


Halkias J, Yen B, Taylor KT, Reinhartz O, Winoto A, Robey EA, Meichar HJ. 2015; Conserved and diver­gent aspects of human T-cell development and mig­ration in humanized mice. Immunol Cell Biol. 93:716-726


Henderson DA. 1994; Role of the United States in the global response to emerging infections. J Infect Dis. 170:284-285


Hiramatsu H, Nishikomori R, Heike T, Ito M, Kobayashi K, Katamura K, Nakahata T. 2003; Complete reconsti­tution of human lymphocytes from cord blood CD34+ cells using the NOD/SCID/gammacnull mice model. Blood. 102:873-880


Hu Z, Xia J, Fan W, Wargo J, Yang YG. 2016; Human melanoma immunotherapy using tumor antigen-spe­cific T cells generated in humanized mice. Oncotarget. 7:6448-6459


Huang M, Zhang W, Guo J, Wei X, Phiwpan K, Zhang J, Zhou X. 2016; Improved transgenic mouse model for studying HLA class I antigen presentation. Sci Rep. 6:33612


Ishikawa F, Yasukawa M, Lyons B, Yoshida S, Miyamoto T, Yoshimoto G, Watanabe T, Akashi K, Shultz LD, Harada M. 2005; Development of functional human blood and immune systems in NOD/SCID/IL2 receptor γ chainnull mice. Blood. 106:1565-1573


Ito M, Hiramatsu H, Kobayashi K, Suzue K, Kawahata M, Hioki K, Ueyama Y, Koyanagi Y, Sugamura K, Tsuji K, Heike T, Nakahata T. 2002; NOD/SCID/gamma (c)null mouse: an excellent recipient mouse model for engraft­ment of human cells. Blood. 100:3175-3182


Jaiswal S, Pazoles P, Woda M, Shultz LD, Greiner DL, Brehm MA, Mathew A. 2012; Enhanced humoral and HLA-A2-restricted dengue virus-specific T-cell res­ponses in humanized BLT NSG mice. Immunology. 136:334-343


Karpel ME, Boutwell CL, Allen TM. 2015; BLT hu­manized mice as a small animal model of HIV infec­tion. Curr Opin Virol. 13:75-80


Klenerman P, Oxenius A. 2016; T cell responses to cyto­megalovirus. Nat Rev Immunol. 16:367-377


Kooreman NG, de Almeida PE, Stack JP, Nelakanti RV, Diecke S, Shao NY, Swijnenburg RJ, Sanchez-Freire V, Matsa E, Liu C, Connolly AJ, Hamming JF, Quax PHA, Brehm MA, Greiner DL, Shultz LD, Wu JC. 2017; Alloimmune responses of humanized mice to human pluripotent stem cell therapeutics. Cell Rep. 20:1978-1990


Kruse S, Buchler M, Uhl P, Sauter M, Scherer P, Lan TCT, Zottnick S, Klevenz A, Yang R, Rosl F, Mier W, Riemer AB. 2018; Therapeutic vaccination using minimal HPV16 epitopes in a novel MHC-humanized murine HPV tumor model. Oncoimmunology. 8:e1524694


Lambolez F, Arcangeli ML, Joret AM, Pasqualetto V, Cordier C, Di Santo JP, Rocha B, Ezine S. 2006; The thymus exports long-lived fully committed T cell pre­cursors that can colonize primary lymphoid organs. Nat Immunol. 7:76-82


Lan P, Tonomura N, Shimizu A, Wang S, Yang YG. 2006; Reconstitution of a functional human immune system in immunodeficient mice through combined human fetal thymus/liver and CD34+ cell transplantation. Blood. 108:487-92


Lanzavecchia A, Sallusto F. 2000; Dynamics of T lym­phocyte responses: intermediates, effectors, and memory cells. Science. 290:92-97


Lapidot T, Pflumio F, Doedens M, Murdoch B, Williams DE, Dick JE. 1992; Cytokine stimulation of multi­lineage hematopoiesis from immature human cells engrafted in SCID mice. Science. 255:1137-1141


Lavender KJ, Pang WW, Messer RJ, Duley AK, Race B, Phillips K, Scott D, Peterson KE, Chan CK, Dittmer U, Dudek T, Allen TM, Weissman IL, Hasenkrug KJ. 2013; BLT-humanized C57BL/6 Rag2-/-gammac-/-CD47-/- mice are resistant to GVHD and develop B- and T-cell immunity to HIV infection. Blood. 122:4013-4020


Lee JY, Kim DC, Kim HJ. 2015; Humanized (SCID) mice as a model to study human leukemia. Biomed Sci Lett. 21:51-59.


Lenschow DJ, Walunas TL, Bluestone JA. 1996; CD28/B7 system of T cell costimulation. Annu Rev Immunol. 14:233-258


Li W, Kim MG, Gourley TS, McCarthy BP, Sant'Angelo DB, Chang CH. 2005; An alternate pathway for CD4 T cell development: thymocyte-expressed MHC class II selects a distinct T cell population. Immunity. 23:375-386


Li Y, Masse-Ranson G, Garcia Z, Bruel T, Kok A, Strick-Marchand H, Jouvion G, Serafini N, Lim AL, Dusseaux M, Hieu T, Bourgade F, Toubert A, Finke D, Schwartz O, Bousso P, Mouquet H, Di Santo JP. 2018; A human immune system mouse model with robust lymph node development. Nat Methods. 15:623-630


Luce S, Guinoiseau S, Gadault A, Letourneur F, Blondeau B, Nitschke P, Pasmant E, Vidaud M, Lemonnier F, Boitard C. 2018; Humanized mouse model to study type 1 diabetes. Diabetes. 67:1816-1829


Manz MG. 2007; Human-hemato-lymphoid-system mice: opportunities and challenges. Immunity. 26:537-541


Masse-Ranson G, Dusseaux M, Fiquet O, Darche S, Boussand M, Li Y, Lopez-Lastra S, Legrand N, Corcuff E, Toubert A, Centlivre M, Bruel T, Spits H, Schwartz O, Levy Y, Strick-Marchand H, Di Santo JP. 2019; Accelerated thymopoiesis and improved T-cell responses in HLA-A2/-DR2 transgenic BRGS-based human immune system mice. Eur J Immunol. 49:954-965


McCune JM, Namikawa R, Kaneshima H, Shultz LD, Lieberman M, Weissman IL. 1988; The SCID-hu mouse: murine model for the analysis of human hematolym­phoid differentiation and function. Science. 241:1632-1639


McCune JM, Peault B, Streeter PR, Rabin L. 1991; Preclinical evaluation of human hematolymphoid function in the SCID-hu mouse. Immunol Rev. 124:45-62


Melkus MW, Estes JD, Padgett-Thomas A, Gatlin J, Denton PW, Othieno FA, Wega AK, Haase AT, Garcia JV. 2006; Humanized mice mount specific adaptive and innate immune responses to EBV and TSST-1. Nat Med. 12:1316-1322


Morton JJ, Bird G, Refaeli Y, Jimeno A. 2016; Humanized mouse xenograft models: narrowing the tumor-micro­environment gap. Cancer Res. 76:6153-6158


Mosier DE, Gulizia RJ, Baird SM, Wilson DB. 1988; Transfer of a functional human immune system to mice with severe combined immunodeficiency. Nature. 335:256-259


Murphy KM, Reiner SL. 2002; The lineage decisions of helper T cells. Nat Rev Immunol. 2:933-944


Najima Y, Tomizawa-Murasawa M, Saito Y, Watanabe T, Ono R, Ochi T, Suzuki N, Fujiwara H, Ohara O, Shultz LD, Yasukawa M, Ishikawa F. 2016; Induction of WT1-specific human CD8+ T cells from human HSCs in HLA class I Tg NOD/SCID/IL2rgKO mice. Blood. 127:722-734


Niens M, Grier AE, Marron M, Kay TW, Greiner DL, Serreze DV. 2011; Prevention of "Humanized" diabe­togenic CD8 T-cell responses in HLA-transgenic NOD mice by a multipeptide coupled-cell approach. Diabetes. 60:1229-1236


Obenaus M, Leitao C, Leisegang M, Chen X, Gavvovidis I, van der Bruggen P, Uckert W, Schendel DJ, Blan­kenstein T. 2015; Identification of human T-cell receptors with optimal affinity to cancer antigens using antigen-negative humanized mice. Nat Biotechnol. 33:402-407


Peault B, Weissman IL, Baum C, McCune JM, Tsukamoto A. 1991; Lymphoid reconstitution of the human fetal thymus in SCID mice with CD34+ precursor cells. J Exp Med. 174:1283-1286


Prinz I, Sansoni A, Kissenpfennig A, Ardouin L, Malissen M, Malissen B. 2006; Visualization of the earliest steps of gammadelta T cell development in the adult thymus. Nat Immunol. 7:995-1003


Punt JA, Suzuki H, Granger LG, Sharrow SO, Singer A. 1996; Lineage commitment in the thymus: only the most differentiated (TCRhibcl-2hi) subset of CD4+CD8+ thymocytes has selectively terminated CD4 or CD8 synthesis. J Exp Med. 184:2091-2099


Ridge JP, Di Rosa F, Matzinger P. 1998; A conditioned dendritic cell can be a temporal bridge between a CD4+ T-helper and a T-killer cell. Nature. 393:474-478


Romero P, Zippelius A, Kurth I, Pittet MJ, Touvrey C, Iancu EM, Corthesy P, Devevre E, Speiser DE, Rufer N. 2007; Four functionally distinct populations of human effector-memory CD8+ T lymphocytes. J Immunol. 178:4112-4119


Schoenberger SP, Toes RE, van der Voort EI, Offringa R, Melief CJ. 1998; T-cell help for cytotoxic T lym­phocytes is mediated by CD40-CD40L interactions. Nature. 393:480-483


Serr I, Furst RW, Achenbach P, Scherm MG, Gokmen F, Haupt F, Sedlmeier EM, Knopff A, Shultz L, Willis RA, Ziegler AG, Daniel C. 2016; Type 1 diabetes vaccine candidates promote human Foxp3 +Treg in­duction in humanized mice. Nat Commun. 7:10991


Shultz LD, Brehm MA, Garcia-Martinez JV, Greiner DL. 2012; Humanized mice for immune system investi­gation: progress, promise and challenges. Nat Rev Immunol. 12:786-798


Shultz LD, Lyons BL, Burzenski LM, Gott B, Chen X, Chaleff S, Kotb M, Gillies SD, King M, Mangada J, Greiner DL, Handgretinger R. 2005; Human lymphoid and myeloid cell development in NOD/LtSz-scid IL2R gammanull mice engrafted with mobilized human hemo­poietic stem cells. J Immunol. 174:6477-6489


Shultz LD, Saito Y, Najima Y, Tanaka S, Ochi T, Tomizawa M, Doi T, Sone A, Suzuki N, Fujiwara H, Yasukawa M, Ishikawa F. 2010; Generation of func­tional human T-cell subsets with HLA-restricted im­mune responses in HLA class I expressing NOD/SCID/IL2r gammanull humanized mice. Proc Natl Acad Sci USA. 107:13022-13027


Shultz LD, Schweitzer PA, Christianson SW, Gott B, Schweitzer IB, Tennent B, McKenne S, Mobraaren L, Rajan TV, Greiner DL. 1995; Multiple defects in innate and adaptive immunologic function in NOD/LtSz-scid mice. J Immunol. 154:180-191


Smith DJ, Lin LJ, Moon H, Pham AT, Wang X, Liu S, Ji S, Rezek V, Shimizu S, Ruiz M, Lam J, Janzen DM, Memarzadeh S, Kohn DB, Zack JA, Kitchen SG, An DS, Yang L. 2016; Propagating humanized blt mice for the study of human immunology and immun­otherapy. Stem Cells Dev. 25:1863-1873


Song J, Willinger T, Rongvaux A, Eynon EE, Stevens S, Manz MG, Flavell RA, Galan JE. 2010; A mouse model for the human pathogen Salmonella typhi. Cell Host Microbe. 8:369-376


Steinman RM. 1991; The dendritic cell system and its role in immunogenicity. Annu Rev Immunol. 9:271-296


Strowig T, Gurer C, Ploss A, Liu YF, Arrey F, Sashihara J, Koo G, Rice CM, Young JW, Chadburn A, Cohen JI, Munz C. 2009; Priming of protective T cell responses against virus-induced tumors in mice with human im­mune system components. J Exp Med. 206:1423-1434


Suzuki M, Takahashi T, Katano I, Ito R, Ito M, Harigae H, Ishii N, Sugamura K. 2012; Induction of human humoral immune responses in a novel HLA-DR-expressing transgenic NOD/Shi-scid/γcnull mouse. Int Immunol. 24:243-252


Takahama Y. 2006; Journey through the thymus: stromal guides for T-cell development and selection. Nat Rev Immunol. 6:127-135


Takaki T, Marron MP, Mathews CE, Guttmann ST, Bottino R, Trucco M, DiLorenzo TP, Serreze DV. 2006; HLA-A*0201-restricted T cells from humanized NOD mice recognize autoantigens of potential clinical relevance to type 1 diabetes. J Immunol. 176:3257-3265


Tary-Lehmann M, Saxon A. 1992; Human mature T cells that are anergic in vivo prevail in SCID mice reconsti­tuted with human peripheral blood. J Exp Med. 175:503-516


Tary-Lehmann M, Saxon A, Lehmann PV. 1995; The human immune system in hu-PBL-SCID mice. Immu­nol Today. 16:529-533.


Thomas S, Klobuch S, Sommer M, van Ewijk R, Theobald M, Meyer RG, Herr W. 2014; Human CD8+ memory and EBV-specific T cells show low alloreactivity in vitro and in CD34+ stem cell-engrafted NOD/SCID/IL-2Rγcnull mice. Exp Hematol. 42:28-38


Traggiai E, Chicha L, Mazzucchelli L, Bronz L, Piffaretti JC, Lanzavecchia A, Manz MG. 2004; Development of a human adaptive immune system in cord blood cell-transplanted mice. Science. 304:104-107


Tsuchida M, Brown SA, Tutt LM, Tan J, Seehafer DL, Harris JP, Xun CQ, Thompson JS. 1997; A model of human anti-T-cell monoclonal antibody therapy in SCID mice engrafted with human peripheral blood lymphocytes. Clin Transplant. 11:522-528


Tuckett AZ, Thornton RH, O'Reilly RJ, van den Brink MRM, Zakrzewski JL. 2017; Intrathymic injection of hematopoietic progenitor cells establishes functional T cell development in a mouse model of severe com­bined immunodeficiency. J Hematol Oncol. 10:109


Velardi E, Tsai JJ, Holland AM, Wertheimer T, Yu VW, Zakrzewski JL, Tuckett AZ, Singer NV, West ML, Smith OM, Young LF, Kreines FM, Levy ER, Boyd RL, Scadden DT, Dudakov JA, van den Brink MR. 2014; Sex steroid blockade enhances thymopoiesis by modulating Notch signaling. J Exp Med. 211:2341-2349


Walsh NC, Kenney LL, Jangalwe S, Aryee KE, Greiner DL, Brehm MA, Shultz LD. 2017; Humanized Mouse Models of Clinical Disease. Annu Rev Pathol. 12:187-215


Watanabe Y, Takahashi T, Okajima A, Shiokawa M, Ishii N, Katano I, Ito R, Ito M, Minegishi M, Minegishi N, Tsuchiya S, Sugamura K. 2009; The analysis of the functions of human B and T cells in humanized NOD/shi-scid/gammacnull (NOG) mice (hu-HSC NOG mice). Int Immunol. 21:843-858


Wege AK, Melkus MW, Denton PW, Estes JD, Garcia JV. 2008; Functional and phenotypic characterization of the humanized BLT mouse model. Curr Top Microbiol Immunol. 324:149-65


Williams SS, Umemoto T, Kida H, Repasky EA, Bankert RB. 1992; Engraftment of human peripheral blood leukocytes into severe combined immunodeficient mice results in the long term and dynamic production of human xenoreactive antibodies. J Immunol. 149:2830-2836


Zakrzewski JL, Kochman AA, Lu SX, Terwey TH, Kim TD, Hubbard VM, Muriglan SJ, Suh D, Smith OM, Grubin J, Patel N, Chow A, Cabrera-Perez Radhakrishnan R, Diab A, Perales MA, Rizzuto G, Menet E, Pamer EG, Heller G, Zuniga-Pflucker JC, Alpdogan O, van den Brink MR. 2006; Adoptive transfer of T-cell precursors enhances T-cell reconstitution after allogeneic hematopoietic stem cell transplantation. Nat Med. 12:1039-1047