1
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Zeng M, Ruan Z, Tang J, Liu M, Hu C, Fan P, Dai X. Generation, evolution, interfering factors, applications, and challenges of patient-derived xenograft models in immunodeficient mice. Cancer Cell Int 2023; 23:120. [PMID: 37344821 DOI: 10.1186/s12935-023-02953-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/24/2023] [Indexed: 06/23/2023] Open
Abstract
Establishing appropriate preclinical models is essential for cancer research. Evidence suggests that cancer is a highly heterogeneous disease. This follows the growing use of cancer models in cancer research to avoid these differences between xenograft tumor models and patient tumors. In recent years, a patient-derived xenograft (PDX) tumor model has been actively generated and applied, which preserves both cell-cell interactions and the microenvironment of tumors by directly transplanting cancer tissue from tumors into immunodeficient mice. In addition to this, the advent of alternative hosts, such as zebrafish hosts, or in vitro models (organoids and microfluidics), has also facilitated the advancement of cancer research. However, they still have a long way to go before they become reliable models. The development of immunodeficient mice has enabled PDX to become more mature and radiate new vitality. As one of the most reliable and standard preclinical models, the PDX model in immunodeficient mice (PDX-IM) exerts important effects in drug screening, biomarker development, personalized medicine, co-clinical trials, and immunotherapy. Here, we focus on the development procedures and application of PDX-IM in detail, summarize the implications that the evolution of immunodeficient mice has brought to PDX-IM, and cover the key issues in developing PDX-IM in preclinical studies.
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Affiliation(s)
- Mingtang Zeng
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zijing Ruan
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jiaxi Tang
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Maozhu Liu
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Chengji Hu
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ping Fan
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, 610041, China.
| | - Xinhua Dai
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610041, China.
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2
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Ritacco C, Köse MC, Courtois J, Canti L, Beguin C, Dubois S, Vandenhove B, Servais S, Caers J, Beguin Y, Ehx G, Baron F. Post-transplant cyclophosphamide prevents xenogeneic graft-versus-host disease while depleting proliferating regulatory T cells. iScience 2023; 26:106085. [PMID: 36843851 PMCID: PMC9947306 DOI: 10.1016/j.isci.2023.106085] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/12/2022] [Accepted: 01/25/2023] [Indexed: 02/02/2023] Open
Abstract
Graft-versus-host disease (GVHD) remains a serious limitation of allogeneic hematopoietic cell transplantation (allo-HCT). While post-transplant administration of cyclophosphamide (PTCy) is increasingly used as GVHD prophylaxis, its precise mechanisms of action and its impact on graft-versus-leukemia effects have remained debated. Here, we studied the mechanisms of xenogeneic GVHD (xGVHD) prevention by PTCy in different humanized mouse models. We observed that PTCy attenuated xGVHD. Using flow cytometry and single-cell RNA-sequencing, we demonstrated that PTCy depleted proliferative CD8+ and conventional CD4+ T cells but also proliferative regulatory T cells (Treg). Further, T-cell receptor β variable region sequencing (TCRVB) analyses demonstrated that highly xenoreactive T-cell clones were depleted by PTCy. Although Treg frequencies were significantly higher in PTCy-treated than in control mice on day 21, xGVHD attenuation by PTCy was not abrogated by Treg depletion. Finally, we observed that PTCy did not abrogate graft-versus-leukemia effects.
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Affiliation(s)
- Caroline Ritacco
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium
| | - Murat Cem Köse
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium
| | - Justine Courtois
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium
| | - Lorenzo Canti
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium
| | - Charline Beguin
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium
| | - Sophie Dubois
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium
| | - Benoît Vandenhove
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium
| | - Sophie Servais
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium,Department of Medicine, Division of Hematology, CHU of Liège, Liège 4000, Belgium
| | - Jo Caers
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium,Department of Medicine, Division of Hematology, CHU of Liège, Liège 4000, Belgium
| | - Yves Beguin
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium,Department of Medicine, Division of Hematology, CHU of Liège, Liège 4000, Belgium
| | - Grégory Ehx
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium,Corresponding author
| | - Frédéric Baron
- Hematology Research Unit, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I³, University of Liège, Liège 4000, Belgium,Department of Medicine, Division of Hematology, CHU of Liège, Liège 4000, Belgium,Corresponding author
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3
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Geraghty NJ, Belfiore L, Adhikary SR, Alexander SI, Sluyter R, Watson D. Increased splenic human CD4+:CD8+ T cell ratios, serum human interferon-γ and intestinal human interleukin-17 are associated with clinical graft-versus-host disease in humanized mice. Transpl Immunol 2019; 54:38-46. [DOI: 10.1016/j.trim.2019.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 02/07/2019] [Accepted: 02/07/2019] [Indexed: 12/25/2022]
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4
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Geraghty NJ, Adhikary SR, Watson D, Sluyter R. The A 2A receptor agonist CGS 21680 has beneficial and adverse effects on disease development in a humanised mouse model of graft-versus-host disease. Int Immunopharmacol 2019; 72:479-486. [PMID: 31051404 DOI: 10.1016/j.intimp.2019.04.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 03/04/2019] [Accepted: 04/18/2019] [Indexed: 02/06/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (HSCT) is a curative method for blood cancers and other blood disorders, but is limited by the development of graft-versus-host disease (GVHD). GVHD results in inflammatory damage to the host liver, gastrointestinal tract and skin, resulting in high rates of morbidity and mortality in HSCT recipients. Activation of the A2A receptor has been previously demonstrated to reduce disease in allogeneic mouse models of GVHD. This study aimed to investigate the effect of A2A activation on disease development in a humanised mouse model of GVHD. Immunodeficient non-obese diabetic-severe combined immunodeficiency-interleukin (IL)-2 receptor γnull (NSG) mice injected with human (h) peripheral blood mononuclear cells (hPBMCs), were treated with either the A2A agonist CGS 21680 or control vehicle. Contrary to the beneficial effect of A2A activation in allogeneic mouse models, CGS 21680 increased weight loss, and failed to reduce the clinical score or increase survival in this humanised mouse model of GVHD. Moreover, CGS 21680 reduced T regulatory cells and increased serum human IL-6 concentrations. Conversely, CGS 21680 reduced serum human tumour necrosis factor (TNF)-α concentrations and leukocyte infiltration into the liver, indicating that A2A activation can, in part, reduce molecular and histological GVHD in this model. Notably, CGS 21680 also prevented healthy weight gain in NSG mice not engrafted with hPBMCs suggesting that this compound may be suppressing appetite or metabolism. Therefore, the potential benefits of A2A activation in reducing GVHD in HSCT recipients may be limited and confounded by adverse impacts on weight, decreased T regulatory cell frequency and increased IL-6 production.
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Affiliation(s)
- N J Geraghty
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; Molecular Horizons, University of Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - S R Adhikary
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; Molecular Horizons, University of Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - D Watson
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; Molecular Horizons, University of Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - R Sluyter
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; Molecular Horizons, University of Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.
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5
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Geraghty NJ, Watson D, Sluyter R. Long-term treatment with the P2X7 receptor antagonist Brilliant Blue G reduces liver inflammation in a humanized mouse model of graft-versus-host disease. Cell Immunol 2018; 336:12-19. [PMID: 30545568 DOI: 10.1016/j.cellimm.2018.12.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 11/22/2018] [Accepted: 12/03/2018] [Indexed: 12/20/2022]
Abstract
Allogeneic haematopoietic stem cell transplantation (HSCT) is a frequent curative therapy for numerous haematological malignancies. However, HSCT is limited by the occurrence of graft-versus-host disease (GVHD), with current therapies restricted to general immunosuppression. Activation of the P2X7 receptor by extracellular adenosine triphosphate (ATP) causes inflammation and tissue damage in GVHD. Short-term pharmacological blockade of P2X7 has been shown to reduce clinical disease and/or reduce inflammatory markers in allogeneic and humanized mouse models of GVHD. The current study demonstrates that long-term P2X7 blockade by intra-peritoneal injection of Brilliant Blue G (BBG) thrice weekly for up to 10 weeks did not impact human (h) peripheral blood mononuclear cell (PBMC) engraftment, predominantly T cells, in blood at 3 weeks post-hPBMC injection or in spleens at end-point in humanized mice. Histological analysis demonstrated long-term BBG treatment reduced leukocyte infiltration in the livers of humanized mice. Immunohistochemical analysis demonstrated that BBG treatment reduced liver apoptosis. Long-term BBG treatment did not alter clinical disease, mRNA expression of pro-inflammatory markers in tissues or serum human interferon (IFN)-γ concentrations. Therefore, this study demonstrates that P2X7 activation plays a role in GVHD pathogenesis in the livers of humanized mice, supporting a role for this receptor in GVHD development in HSCT recipients.
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Affiliation(s)
- N J Geraghty
- School of Biological Sciences, University of Wollongong, Wollongong, NSW 2252, Australia; Molecular Horizons, University of Wollongong, NSW 2252, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2252, Australia
| | - D Watson
- School of Biological Sciences, University of Wollongong, Wollongong, NSW 2252, Australia; Molecular Horizons, University of Wollongong, NSW 2252, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2252, Australia.
| | - R Sluyter
- School of Biological Sciences, University of Wollongong, Wollongong, NSW 2252, Australia; Molecular Horizons, University of Wollongong, NSW 2252, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2252, Australia.
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6
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Durost PA, Aryee KE, Manzoor F, Tisch RM, Mueller C, Jurczyk A, Shultz LD, Brehm MA. Gene Therapy with an Adeno-Associated Viral Vector Expressing Human Interleukin-2 Alters Immune System Homeostasis in Humanized Mice. Hum Gene Ther 2018; 29:352-365. [DOI: 10.1089/hum.2017.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Philip A. Durost
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Ken-Edwin Aryee
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Fatima Manzoor
- Department of Immunology and Microbiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Roland M. Tisch
- Department of Immunology and Microbiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Christian Mueller
- Department of Pediatrics and Horae Gene Therapy Center, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Agata Jurczyk
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
| | | | - Michael A. Brehm
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts
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7
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Abraham S, Choi JG, Ortega NM, Zhang J, Shankar P, Swamy NM. Gene therapy with plasmids encoding IFN-β or IFN-α14 confers long-term resistance to HIV-1 in humanized mice. Oncotarget 2018; 7:78412-78420. [PMID: 27729616 PMCID: PMC5346649 DOI: 10.18632/oncotarget.12512] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 10/02/2016] [Indexed: 01/31/2023] Open
Abstract
Because endogenous interferon type I (IFN-I) produced by HIV-1 infection might complicate the analysis of therapeutically administered IFN-I, we tested different humanized mouse models for induction of IFN-I during HIV-1 infection. While HIV-1 induced high levels of IFN-α in BLT mice, IFN-I was undetectable following infection in the Hu-PBL mouse model, in which only T cells expand. We therefore tested the effect of treatment with Pegylated IFN-2 (pegasys), in Hu-PBL mice. Pegasys prevented CD4 T cell depletion and reduced the viral load for 10 days, but the effect waned thereafter. We next expressed IFN-I subsets (IFN-α2, −α6, −α8, −α14, and −β) in Hu-PBL mice by hydrodynamic injection of plasmids encoding them and 2 days later infected the mice with HIV-1. CD4 T cell depletion was prevented in all subtypes of IFN-I-expressing mice by day 10. However, at day 40 post-infection, protection was seen in IFN-β- and IFN-α14-expressing mice, but not the others. The viral load followed an inverse pattern and was highest in control mice and lowest in IFN-β- and IFN-α14-expressing mice until day 40 after infection. These results show that gene therapy with plasmids encoding IFN-β and −α14, but not the commonly used −α2, confers long-term suppression of HIV-1 replication.
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Affiliation(s)
- Sojan Abraham
- Center of Emphasis in Infectious Disease, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Jang-Gi Choi
- Center of Emphasis in Infectious Disease, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA.,KM Application Center, Korea Institute of Oriental Medicine, Dong-gu, Daegu, Republic of Korea
| | - Nora M Ortega
- Center of Emphasis in Infectious Disease, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Junli Zhang
- Center of Emphasis in Infectious Disease, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Premlata Shankar
- Center of Emphasis in Infectious Disease, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - N Manjunath Swamy
- Center of Emphasis in Infectious Disease, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
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8
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Abraham S, Guo H, Choi JG, Ye C, Thomas MB, Ortega N, Dwivedi A, Manjunath N, Yi G, Shankar P. Combination of IL-10 and IL-2 induces oligoclonal human CD4 T cell expansion during xenogeneic and allogeneic GVHD in humanized mice. Heliyon 2017; 3:e00276. [PMID: 28409183 PMCID: PMC5382148 DOI: 10.1016/j.heliyon.2017.e00276] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 02/08/2017] [Accepted: 03/23/2017] [Indexed: 11/06/2022] Open
Abstract
IL-10 is a crucial anti-inflammatory cytokine which can also exert a seemingly divergent immunostimulatory effects under certain conditions. We found high levels of the cytokine in a xenogeneic GVHD model where NOD-scid IL2rγcnull (NSG) mice were transplanted with human PBMCs in presence of IL-2. Presence of exogenous IL-10 altered the kinetics of IL-2 induced human T cell reconstitution in vivo, showing an initial delay, followed by rapid expansion. Further, compared to IL-2 alone, treatment with IL-2 in combination with IL-10 increased survival in most animals and completely protected ∼20% of mice from GVHD. Additionally, IL-2 induced expansion of both CD4+ and CD8+ xenoreactive T cells whereas a combination of IL-2 and IL-10 resulted in selective expansion of CD4+ T cells only. TCR Vβ repertoire analysis of CD4+ T cells showed that in contrast to IL-2 alone, simultaneous presence of both cytokines drastically reduced the Vβ repertoire of the expanded CD4+ T cells. Highly restricted Vβ usage was also observed when the cytokine combination was tested in an allogeneic GVHD model where NOD-scid IL2rγcnull mice expressing HLA-DR4 (NSG-DR4) were transplanted with purified CD4+ T cells from HLA-DR4 negative donors. Taken together, our results demonstrate that IL-10 can profoundly modulate the subset composition and repertoire of responding T cells during GVHD.
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Affiliation(s)
- Sojan Abraham
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA.,Department of Infectious Disease Research, Drug Development, Southern Research Institute, Frederick MD, USA
| | - Hua Guo
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Jang-Gi Choi
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA.,KM Application Center, Korea Institute of Oriental Medicine, 70 Chemdan-ro, Dong-gu, Daegu 701-300, Republic of Korea
| | - Chunting Ye
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA.,The Jackson Laboratory-west, 1650 Santa Ana Avenue, Sacramento, CA, USA
| | - Midhun Ben Thomas
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Nora Ortega
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Alok Dwivedi
- Division of Biostatistics and Epidemiology, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - N Manjunath
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Guohua Yi
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Premlata Shankar
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
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9
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Dijke IE, Hoeppli RE, Ellis T, Pearcey J, Huang Q, McMurchy AN, Boer K, Peeters AMA, Aubert G, Larsen I, Ross DB, Rebeyka I, Campbell A, Baan CC, Levings MK, West LJ. Discarded Human Thymus Is a Novel Source of Stable and Long-Lived Therapeutic Regulatory T Cells. Am J Transplant 2016; 16:58-71. [PMID: 26414799 DOI: 10.1111/ajt.13456] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 06/19/2015] [Accepted: 07/14/2015] [Indexed: 01/25/2023]
Abstract
Regulatory T cell (Treg)-based therapy is a promising approach to treat many immune-mediated disorders such as autoimmune diseases, organ transplant rejection, and graft-versus-host disease (GVHD). Challenges to successful clinical implementation of adoptive Treg therapy include difficulties isolating homogeneous cell populations and developing expansion protocols that result in adequate numbers of cells that remain stable, even under inflammatory conditions. We investigated the potential of discarded human thymuses, routinely removed during pediatric cardiac surgery, to be used as a novel source of therapeutic Tregs. Here, we show that large numbers of FOXP3(+) Tregs can be isolated and expanded from a single thymus. Expanded thymic Tregs had stable FOXP3 expression and long telomeres, and suppressed proliferation and cytokine production of activated allogeneic T cells in vitro. Moreover, expanded thymic Tregs delayed development of xenogeneic GVHD in vivo more effectively than expanded Tregs isolated based on CD25 expression from peripheral blood. Importantly, in contrast to expanded blood Tregs, expanded thymic Tregs remained stable under inflammatory conditions. Our results demonstrate that discarded pediatric thymuses are an excellent source of therapeutic Tregs, having the potential to overcome limitations currently hindering the use of Tregs derived from peripheral or cord blood.
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Affiliation(s)
- I E Dijke
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
| | - R E Hoeppli
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - T Ellis
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
| | - J Pearcey
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
| | - Q Huang
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - A N McMurchy
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - K Boer
- Department of Internal Medicine, Erasmus MC Medical Center, Rotterdam, the Netherlands
| | - A M A Peeters
- Department of Internal Medicine, Erasmus MC Medical Center, Rotterdam, the Netherlands
| | - G Aubert
- Terry Fox Laboratory, British Columbia Cancer Research Centre, Vancouver, BC, Canada
| | - I Larsen
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada
| | - D B Ross
- Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada.,Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - I Rebeyka
- Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada.,Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - A Campbell
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - C C Baan
- Department of Internal Medicine, Erasmus MC Medical Center, Rotterdam, the Netherlands
| | - M K Levings
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - L J West
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.,Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada.,Department of Surgery, University of Alberta, Edmonton, AB, Canada
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10
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Hu X, Cao Y, Meng Y, Hou M. A novel modulation of structural and functional changes of mouse bone marrow derived dendritic cells (BMDCs) by interleukin-2(IL-2). Hum Vaccin Immunother 2015; 11:516-21. [PMID: 25622186 DOI: 10.1080/21645515.2015.1009336] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
IL-2 is a pleiotropic cytokine produced by T cell after antigen activation of T cell and it is so called T cell growth factor. A large number of documents suggest that Il-2 plays pivotal roles in the immune response and now Il-2 is an approved drug being used for various kinds of diseases such as cancer and dermatitis. (1) The aim of present exploration was to look at effect of IL-2 on structural, phenotypic and functional maturation of murine BMDCs. The structural and phenotypic maturation of BMDCs under influence of IL-2 were evaluated by light microscope and flow cytometry (FCM). The functional maturation of BMDCs was confirmed by cytochemistry assay, FITC-dextran, acid phosphatase (ACP) activity, bio-assay and enzyme linked immunosorbent assay (ELISA).We elucidated that IL-2 up-regulated the expression of key surface markers such as: CD80, CD83, CD86, CD40 and MHC II molecules on BMDCs, down-regulated phagocytosis activity, induced more production of IL-12 and TNF-α secreted by BMDCs. Therefore it can be concluded that IL-2 effectively enhance the maturation of BMDCs. Our results provide direct evidence to support IL-2 would be used as a potent adjuvant in preparation of DC-based vaccines, as well as an immune remedy for cancer situation.
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Affiliation(s)
- Xiaofang Hu
- a Department of Clinical Detection ; General Hospital of Shenyang Military Command ; Shenyang , China
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11
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Abstract
PURPOSE OF REVIEW The field of vascularized composite allograft (VCA) to achieve its full potential will require induction of tolerance. This review will introduce a new method of potential inducing tolerance in hand transplantation. RECENT FINDINGS Hand transplantation is never a life-extending transplant. This fact resulted in considerable debate both for and against the use of immunosuppression for nonlife-extending transplants. There is considerable debate about the ethics of hand transplantation. There is now consensus that nonlife-extending transplants are acceptable in properly selected patients. However, ideally, hand transplants should not receive life-long immunosuppression. Therefore, attempts to achieve drug-free tolerance through nonlife-endangering therapies are warranted. To this end, we propose implementation of tolerizing therapy long after periinflammation has subsided and drug minimization has proven successful. Evidence that short-term treatment with low doses of IL-2 or a long-lived IL-2 immunoglobulin (Ig) can tilt the balance of immunity from tissue destructive to tolerance come from preclinical demonstrations in mouse and nonhuman primate models of autoimmunity and/or transplantation and even more recent clinical trials. SUMMARY We believe that with the proper use of low-dose IL-2 given at an opportune time in the inflammatory process of transplant that reduce immunosuppression and even tolerance can be induced in hand transplantation. We propose that tolerance can be inducted after a long period of conventional treatment to avoid 'tolerance-hindering' adverse inflammation that occurs in the posttransplant period. With abatement of posttransplant inflammation and with time, we will institute low-dose IL-2-based therapy to support the proliferation, viability and functional phenotype of regulatory T cells.
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IL-10 exacerbates xenogeneic GVHD by inducing massive human T cell expansion. Clin Immunol 2014; 156:58-64. [PMID: 25463432 DOI: 10.1016/j.clim.2014.11.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 10/21/2014] [Accepted: 11/04/2014] [Indexed: 11/21/2022]
Abstract
Although patients with GVHD have elevated serum levels of IL10, whether its role is protective or pathogenic remains unclear. Here, we used a humanized mouse model to study the role of IL-10 in GVHD. When human PBMCs were engrafted in NOD-scid IL2rγc(null) mice expressing human IL-10, the T cells underwent massive expansion resulting in lethality by day 21, whereas control mice survived for at least 40 days. Histopathology of the liver showed extensive mononuclear cell infiltration in IL-10 expressing but not in control mice. Corresponding to their aggressiveness, the T cells in the IL-10 group exhibited predominantly an effector memory phenotype (CD45RO(+)CD27(-)) while in control mice, the T cells were of transitional memory phenotype (CD45RO(+)CD27(+)). Further, IL-10 receptor blocking antibody was able to protect the animals from GVHD. Since our results demonstrate a direct pathogenic role for IL-10, blockade of IL-10 signaling may provide a therapeutic option for GVHD.
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Hannon M, Lechanteur C, Lucas S, Somja J, Seidel L, Belle L, Bruck F, Baudoux E, Giet O, Chantillon AM, Delvenne P, Drion P, Beguin Y, Humblet-Baron S, Baron F. Infusion of clinical-grade enriched regulatory T cells delays experimental xenogeneic graft-versus-host disease. Transfusion 2013; 54:353-63. [PMID: 23772685 DOI: 10.1111/trf.12279] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 04/18/2013] [Accepted: 04/23/2013] [Indexed: 12/19/2022]
Abstract
BACKGROUND We investigated the ability of clinical-grade enriched human regulatory T cells (Treg) to attenuate experimental xenogeneic graft-versus-host disease (GVHD) induced by peripheral blood mononuclear cells (PBMNCs; autologous to Treg) infusion in NSG mice, as well as verified their inability to induce xenogeneic GVHD when infused alone. STUDY DESIGN AND METHODS Human Treg were isolated from peripheral blood apheresis products with a cell separation system (CliniMACS, Miltenyi Biotec GmbH) using a two-step procedure (simultaneous CD8 and CD19 depletion followed by CD25-positive selection) in six independent experiments with six different healthy volunteer donors. Sublethally (2.5 Gy) irradiated NSG mice were given 2 × 10(6) cytapheresis (PBMNC) product cells intravenously (IV) without (PBMNC group) or with 1 × 10(6) Treg (PBMNC + Treg group), while other NSG mice received 2 × 10(6) enriched Treg alone (also in IV; Treg group). RESULTS The first five procedures were successful at obtaining a relatively pure Treg population (defined as >50%), while the sixth procedure, due to a technical problem, was not (Treg purity, 42%). Treg cotransfusion significantly delayed death from xenogeneic GVHD in the first five experiments, (p < 0.0001) but not in the sixth experiment. Importantly, none of the mice given enriched Treg alone (Treg group) experienced clinical signs of GVHD, while, interestingly, the CD4+ cells found in these mice 26 days after transplantation were mainly conventional T cells (median CD25+FoxP3+ cells among human CD4+ total cells were only 2.1, 3.1, and 12.2% in spleen, marrow, and blood, respectively). CONCLUSIONS Infusion of clinical-grade enriched Treg delayed the occurrence of xenogeneic GVHD without inducing toxicity in this murine model.
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Affiliation(s)
- Muriel Hannon
- Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA)-I3, Laboratory of Cell and Genetic Therapy, Department of Pathology, Department of Statistics, GIGA-R, Department of Medicine, Division of Hematology, University of Liège, Liège, Belgium; de Duve Institute, Université Catholique de Louvain, Brussels, Belgium; Red Cross Transfusion Center of Liege, Liège, Belgium; Autoimmune Genetics Laboratory, University of Leuven, Leuven, Belgium
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