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Dimapasoc M, Moran JA, Cole SW, Ranjan A, Hourani R, Kim JT, Wender PA, Marsden MD, Zack JA. Defining the Effects of PKC Modulator HIV Latency-Reversing Agents on Natural Killer Cells. Pathog Immun 2024; 9:108-137. [PMID: 38765786 PMCID: PMC11101012 DOI: 10.20411/pai.v9i1.673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/05/2024] [Indexed: 05/22/2024] Open
Abstract
Background Latency reversing agents (LRAs) such as protein kinase C (PKC) modulators can reduce rebound-competent HIV reservoirs in small animal models. Furthermore, administration of natural killer (NK) cells following LRA treatment improves this reservoir reduction. It is currently unknown why the combination of a PKC modulator and NK cells is so potent and whether exposure to PKC modulators may augment NK cell function in some way. Methods Primary human NK cells were treated with PKC modulators (bryostatin-1, prostratin, or the designed, synthetic bryostatin-1 analog SUW133), and evaluated by examining expression of activation markers by flow cytometry, analyzing transcriptomic profiles by RNA sequencing, measuring cytotoxicity by co-culturing with K562 cells, assessing cytokine production by Luminex assay, and examining the ability of cytokines and secreted factors to independently reverse HIV latency by co-culturing with Jurkat-Latency (J-Lat) cells. Results PKC modulators increased expression of proteins involved in NK cell activation. Transcriptomic profiles from PKC-treated NK cells displayed signatures of cellular activation and enrichment of genes associated with the NFκB pathway. NK cell cytotoxicity was unaffected by prostratin but significantly decreased by bryostatin-1 and SUW133. Cytokines from PKC-stimulated NK cells did not induce latency reversal in J-Lat cell lines. Conclusions Although PKC modulators have some significant effects on NK cells, their contribution in "kick and kill" strategies is likely due to upregulating HIV expression in CD4+ T cells, not directly enhancing the effector functions of NK cells. This suggests that PKC modulators are primarily augmenting the "kick" rather than the "kill" arm of this HIV cure approach.
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Affiliation(s)
- Melanie Dimapasoc
- Molecular Biology Institute, University of California Los Angeles, Los Angeles, California
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, California
| | - Jose A. Moran
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California Irvine, California
| | - Steve W. Cole
- UCLA Department of Psychiatry & Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Alok Ranjan
- Department of Chemistry, Stanford University, Stanford, California
| | - Rami Hourani
- Department of Chemistry, Stanford University, Stanford, California
| | - Jocelyn T. Kim
- Department of Medicine, Division of Infectious Diseases, University of California Los Angeles, Los Angeles, California
| | - Paul A. Wender
- Department of Chemistry, Stanford University, Stanford, California
- Department of Chemical and Systems Biology, Stanford University, Stanford, California
| | - Matthew D. Marsden
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California Irvine, California
- Department of Medicine, Division of Infectious Diseases, School of Medicine, University of California, Irvine, Irvine, California
| | - Jerome A. Zack
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, California
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, California
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2
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Kim JT, Bresson-Tan G, Zack JA. Current Advances in Humanized Mouse Models for Studying NK Cells and HIV Infection. Microorganisms 2023; 11:1984. [PMID: 37630544 PMCID: PMC10458594 DOI: 10.3390/microorganisms11081984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 08/27/2023] Open
Abstract
Human immunodeficiency virus (HIV) has infected millions of people worldwide and continues to be a major global health problem. Scientists required a small animal model to study HIV pathogenesis and immune responses. To this end, humanized mice were created by transplanting human cells and/or tissues into immunodeficient mice to reconstitute a human immune system. Thus, humanized mice have become a critical animal model for HIV researchers, but with some limitations. Current conventional humanized mice are prone to death by graft versus host disease induced by the mouse signal regulatory protein α and CD47 signaling pathway. In addition, commonly used humanized mice generate low levels of human cytokines required for robust myeloid and natural killer cell development and function. Here, we describe recent advances in humanization procedures and transgenic and knock-in immunodeficient mice to address these limitations.
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Affiliation(s)
- Jocelyn T. Kim
- Department of Medicine, Division of Infectious Diseases, University of California Los Angeles, Los Angeles, CA 90095, USA; (J.T.K.)
| | - Gabrielle Bresson-Tan
- Department of Medicine, Division of Infectious Diseases, University of California Los Angeles, Los Angeles, CA 90095, USA; (J.T.K.)
| | - Jerome A. Zack
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, CA 90095, USA;
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, CA 90095, USA
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3
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Moran JA, Ranjan A, Hourani R, Kim JT, Wender PA, Zack JA, Marsden MD. Secreted factors induced by PKC modulators do not indirectly cause HIV latency reversal. Virology 2023; 581:8-14. [PMID: 36842270 PMCID: PMC10103183 DOI: 10.1016/j.virol.2023.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 02/01/2023] [Accepted: 02/15/2023] [Indexed: 02/18/2023]
Abstract
HIV can establish a long-lived latent infection in cells harboring integrated non-expressing proviruses. Latency reversing agents (LRAs), including protein kinase C (PKC) modulators, can induce expression of latent HIV, thereby reducing the latent reservoir in animal models. However, PKC modulators such as bryostatin-1 also cause cytokine upregulation in peripheral blood mononuclear cells (PBMCs), including cytokines that might independently reverse HIV latency. To determine whether cytokines induced by PKC modulators contribute to latency reversal, primary human PBMCs were treated with bryostatin-1 or the bryostatin analog SUW133, a superior LRA, and supernatant was collected. As anticipated, LRA-treated cell supernatant contained increased levels of cytokines compared to untreated cell supernatant. However, exposure of latently-infected cells with this supernatant did not result in latency reactivation. These results indicate that PKC modulators do not have significant indirect effects on HIV latency reversal in vitro and thus are targeted in their latency reversing ability.
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Affiliation(s)
- Jose A Moran
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California Irvine, CA, 92697, USA
| | - Alok Ranjan
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA; Department of Systems and Chemical Biology, Stanford University, Stanford, CA, 94305, USA
| | - Rami Hourani
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA; Department of Systems and Chemical Biology, Stanford University, Stanford, CA, 94305, USA
| | - Jocelyn T Kim
- Department of Medicine, Division of Infectious Diseases, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Paul A Wender
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA; Department of Systems and Chemical Biology, Stanford University, Stanford, CA, 94305, USA
| | - Jerome A Zack
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA; Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Matthew D Marsden
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California Irvine, CA, 92697, USA; Department of Medicine (Division of Infectious Diseases), School of Medicine, University of California Irvine, CA, 92697, USA.
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4
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Kim JT, Zack JA. A humanized mouse model to study NK cell biology during HIV infection. J Clin Invest 2022; 132:e165620. [PMID: 36519544 PMCID: PMC9753985 DOI: 10.1172/jci165620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
NK cells are an important subset of innate immune effectors with antiviral activity. However, NK cell development and immune responses in different tissues during acute and chronic HIV infection in vivo have been difficult to study due to the impaired development and function of NK cells in conventional humanized mouse models. In this issue of the JCI, Sangur et al. report on a transgenic MISTRG-6-15 mouse model with human IL-6 and IL-15 knocked into the previously constructed MISTRG mice. The predecessor model was deficient in Rag2 and γ chain (γc) with knock-in expression of human M-CSF, IL-3, GM-CSF, and TPO, and transgenic expression of human SIRPα. The researchers studied tissue-specific NK cell immune responses during HIV infection and clearly show that the endogenous human NK cells in the humanized mouse model suppressed HIV-1 replication in vivo. These findings provide insight into harnessing the innate immune response for clinical antiviral therapies.
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Affiliation(s)
| | - Jerome A. Zack
- Department of Microbiology, Immunology, and Molecular Genetics, and
- Department of Medicine, Division of Hematology and Oncology, University of California, Los Angeles, Los Angeles, California, USA
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5
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Kim JT, Zhang TH, Carmona C, Lee B, Seet CS, Kostelny M, Shah N, Chen H, Farrell K, Soliman MSA, Dimapasoc M, Sinani M, Blanco KYR, Bojorquez D, Jiang H, Shi Y, Du Y, Komarova NL, Wodarz D, Wender PA, Marsden MD, Sun R, Zack JA. Latency reversal plus natural killer cells diminish HIV reservoir in vivo. Nat Commun 2022; 13:121. [PMID: 35013215 PMCID: PMC8748509 DOI: 10.1038/s41467-021-27647-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/03/2021] [Indexed: 02/06/2023] Open
Abstract
HIV is difficult to eradicate due to the persistence of a long-lived reservoir of latently infected cells. Previous studies have shown that natural killer cells are important to inhibiting HIV infection, but it is unclear whether the administration of natural killer cells can reduce rebound viremia when anti-retroviral therapy is discontinued. Here we show the administration of allogeneic human peripheral blood natural killer cells delays viral rebound following interruption of anti-retroviral therapy in humanized mice infected with HIV-1. Utilizing genetically barcoded virus technology, we show these natural killer cells efficiently reduced viral clones rebounding from latency. Moreover, a kick and kill strategy comprised of the protein kinase C modulator and latency reversing agent SUW133 and allogeneic human peripheral blood natural killer cells during anti-retroviral therapy eliminated the viral reservoir in a subset of mice. Therefore, combinations utilizing latency reversal agents with targeted cellular killing agents may be an effective approach to eradicating the viral reservoir.
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Affiliation(s)
- Jocelyn T Kim
- Department of Medicine, Division of Infectious Diseases, University of California Los Angeles, Los Angeles, CA, 90095, USA.
| | - Tian-Hao Zhang
- Molecular Biology Institute, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Camille Carmona
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Bryanna Lee
- Department of Medicine, Division of Infectious Diseases, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Christopher S Seet
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Matthew Kostelny
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Nisarg Shah
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Hongying Chen
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Kylie Farrell
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Mohamed S A Soliman
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Melanie Dimapasoc
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Michelle Sinani
- Department of Medicine, Division of Infectious Diseases, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Kenia Yazmin Reyna Blanco
- Department of Medicine, Division of Infectious Diseases, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - David Bojorquez
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Hong Jiang
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA, 90095, USA
| | - Yuan Shi
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA, 90095, USA
| | - Yushen Du
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA, 90095, USA
| | - Natalia L Komarova
- Department of Mathematics, University of California, Irvine, Irvine, CA, 92697, USA
| | - Dominik Wodarz
- Department of Population Health and Disease Prevention, Program in Public Health Susan and Henry Samueli College of Health Sciences, University of California, Irvine, Irvine, CA, 92697, USA
| | - Paul A Wender
- Department of Chemistry and Department of Chemical and Systems Biology, Stanford University, Stanford, CA, 94305, USA
| | - Matthew D Marsden
- Department of Microbiology and Molecular Genetics and Department of Medicine, Division of Infectious Diseases, School of Medicine, University of California, Irvine, Irvine, CA, 92697, USA
| | - Ren Sun
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, CA, 90095, USA.,School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Jerome A Zack
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA, 90095, USA.,Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, CA, 90095, USA
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6
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Zhen A, Carrillo MA, Mu W, Rezek V, Martin H, Hamid P, Chen ISY, Yang OO, Zack JA, Kitchen SG. Robust CAR-T memory formation and function via hematopoietic stem cell delivery. PLoS Pathog 2021; 17:e1009404. [PMID: 33793675 PMCID: PMC8016106 DOI: 10.1371/journal.ppat.1009404] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 02/17/2021] [Indexed: 12/16/2022] Open
Abstract
Due to the durability and persistence of reservoirs of HIV-1-infected cells, combination antiretroviral therapy (ART) is insufficient in eradicating infection. Achieving HIV-1 cure or sustained remission without ART treatment will require the enhanced and persistent effective antiviral immune responses. Chimeric Antigen Receptor (CAR) T-cells have emerged as a powerful immunotherapy and show promise in treating HIV-1 infection. Persistence, trafficking, and maintenance of function remain to be a challenge in many of these approaches, which are based on peripheral T cell modification. To overcome many of these issues, we have previously demonstrated successful long-term engraftment and production of anti-HIV CAR T cells in modified hematopoietic stem cells (HSCs) in vivo. Here we report the development and in vivo testing of second generation CD4-based CARs (CD4CAR) against HIV-1 infection using a HSCs-based approach. We found that a modified, truncated CD4-based CAR (D1D2CAR) allows better CAR-T cell differentiation from gene modified HSCs, and maintains similar CTL activity as compared to the full length CD4-based CAR. In addition, D1D2CAR does not mediate HIV infection or stimulation mediated by IL-16, suggesting lower risk of off-target effects. Interestingly, stimulatory domains of 4-1BB but not CD28 allowed successful hematopoietic differentiation and improved anti-viral function of CAR T cells from CAR modified HSCs. Addition of 4-1BB to CD4 based CARs led to faster suppression of viremia during early untreated HIV-1 infection. D1D2CAR 4-1BB mice had faster viral suppression in combination with ART and better persistence of CAR T cells during ART. In summary, our data indicate that the D1D2CAR-41BB is a superior CAR, showing better HSC differentiation, viral suppression and persistence, and less deleterious functions compared to the original CD4CAR, and should continue to be pursued as a candidate for clinical study. Engineering T cells with anti-HIV chimeric antigen receptors (CAR) has emerged as a promising strategy to control HIV infection through a genetic vaccination strategy. Here we report a novel CAR-based approach targeting HIV infection using the genetic modification of blood forming hematopoietic stem cells (HSCs). This novel CAR approach uses a modified HIV receptor molecule (the primary HIV receptor CD4) as well as anti-HIV agents to modify HSCs to allow them to develop into cells that are protected from HIV infection and target HIV infected cells for the life of the individual. We found this latest generation of CARs successfully modified and allowed in vivo engraftment that resulted in the development of effective anti-HIV CAR T cells with robust memory formation and viral control. Our study highlights the identification of a next-generation CAR molecule that protected cells from infection, targeted and reduced HIV burdens, and serves as an ideal developmental candidate for further clinical studies.
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Affiliation(s)
- Anjie Zhen
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Mayra A. Carrillo
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Wenli Mu
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Valerie Rezek
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Heather Martin
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Philip Hamid
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Irvin S. Y. Chen
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Otto O. Yang
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- Department of Infectious Disease, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Jerome A. Zack
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Scott G. Kitchen
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- UCLA AIDS Institute and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- * E-mail:
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7
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Barber-Axthelm IM, Barber-Axthelm V, Sze KY, Zhen A, Suryawanshi GW, Chen IS, Zack JA, Kitchen SG, Kiem HP, Peterson CW. Stem cell-derived CAR T cells traffic to HIV reservoirs in macaques. JCI Insight 2021; 6:141502. [PMID: 33427210 PMCID: PMC7821595 DOI: 10.1172/jci.insight.141502] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 11/25/2020] [Indexed: 12/12/2022] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) with CCR5– donor cells is the only treatment known to cure HIV-1 in patients with underlying malignancy. This is likely due to a donor cell–mediated graft-versus-host effect targeting HIV reservoirs. Allo-HSCT would not be an acceptable therapy for most people living with HIV due to the transplant-related side effects. Chimeric antigen receptor (CAR) immunotherapies specifically traffic to malignant lymphoid tissues (lymphomas) and, in some settings, are able to replace allo-HSCT. Here, we quantified the engraftment of HSC-derived, virus-directed CAR T cells within HIV reservoirs in a macaque model of HIV infection, using potentially novel IHC assays. HSC-derived CAR cells trafficked to and displayed multilineage engraftment within tissue-associated viral reservoirs, persisting for nearly 2 years in lymphoid germinal centers, the brain, and the gastrointestinal tract. Our findings demonstrate that HSC-derived CAR+ cells reside long-term and proliferate in numerous tissues relevant for HIV infection and cancer.
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Affiliation(s)
- Isaac M Barber-Axthelm
- Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Comparative Medicine, University of Washington, Seattle, Washington, USA
| | - Valerie Barber-Axthelm
- Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Kai Yin Sze
- Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Anjie Zhen
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, California, USA.,UCLA AIDS Institute, Los Angeles, California, USA
| | - Gajendra W Suryawanshi
- UCLA AIDS Institute, Los Angeles, California, USA.,Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California, Los Angeles, California, USA
| | - Irvin Sy Chen
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, California, USA.,UCLA AIDS Institute, Los Angeles, California, USA.,Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California, Los Angeles, California, USA
| | - Jerome A Zack
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, California, USA.,UCLA AIDS Institute, Los Angeles, California, USA.,Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California, Los Angeles, California, USA
| | - Scott G Kitchen
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, California, USA.,UCLA AIDS Institute, Los Angeles, California, USA
| | - Hans-Peter Kiem
- Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine and.,Department of Pathology, University of Washington, Seattle, Washington, USA
| | - Christopher W Peterson
- Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.,Department of Medicine and
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8
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Marsden MD, Zhang TH, Du Y, Dimapasoc M, Soliman MS, Wu X, Kim JT, Shimizu A, Schrier A, Wender PA, Sun R, Zack JA. Tracking HIV Rebound following Latency Reversal Using Barcoded HIV. Cell Rep Med 2020; 1:100162. [PMID: 33377133 PMCID: PMC7762775 DOI: 10.1016/j.xcrm.2020.100162] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/31/2020] [Accepted: 11/23/2020] [Indexed: 11/26/2022]
Abstract
HIV latency prevents cure of infection with antiretroviral therapy (ART) alone. One strategy for eliminating latently infected cells involves the induction of viral protein expression via latency-reversing agents (LRAs), allowing killing of host cells by viral cytopathic effects or immune effector mechanisms. Here, we combine a barcoded HIV approach and a humanized mouse model to study the effects of a designed, synthetic protein kinase C modulating LRA on HIV rebound. We show that administration of this compound during ART results in a delay in rebound once ART is stopped. Furthermore, the rebounding virus appears composed of a smaller number of unique barcoded viruses than occurs in control-treated animals, suggesting that some reservoir cells that would have contributed virus to the rebound process are eliminated by LRA administration. These data support the use of barcoded virus to study rebound and suggest that LRAs may be useful in HIV cure efforts.
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Affiliation(s)
- Matthew D. Marsden
- Department of Microbiology and Molecular Genetics and Department of Medicine, Division of Infectious Diseases, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Tian-hao Zhang
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yushen Du
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Cancer Institute, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Melanie Dimapasoc
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Mohamed S.A. Soliman
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Xiaomeng Wu
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jocelyn T. Kim
- Department of Medicine, Division of Infectious Diseases, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Akira Shimizu
- Departments of Chemistry and Chemical and Systems Biology, Stanford University, Stanford, CA 94305, USA
| | - Adam Schrier
- Departments of Chemistry and Chemical and Systems Biology, Stanford University, Stanford, CA 94305, USA
| | - Paul A. Wender
- Departments of Chemistry and Chemical and Systems Biology, Stanford University, Stanford, CA 94305, USA
| | - Ren Sun
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jerome A. Zack
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Medicine, Division of Hematology and Oncology, University of California, Los Angeles, Los Angeles, CA 90095, USA
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9
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Pache L, Marsden MD, Teriete P, Portillo AJ, Heimann D, Kim JT, Soliman MS, Dimapasoc M, Carmona C, Celeridad M, Spivak AM, Planelles V, Cosford ND, Zack JA, Chanda SK. Pharmacological Activation of Non-canonical NF-κB Signaling Activates Latent HIV-1 Reservoirs In Vivo. Cell Rep Med 2020; 1:100037. [PMID: 33205060 PMCID: PMC7659604 DOI: 10.1016/j.xcrm.2020.100037] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/01/2020] [Accepted: 05/27/2020] [Indexed: 02/07/2023]
Abstract
"Shock and kill" strategies focus on purging the latent HIV-1 reservoir by treating infected individuals with therapeutics that activate the latent virus and subsequently eliminating infected cells. We have previously reported that induction of non-canonical nuclear factor κB (NF-κB) signaling through a class of small-molecule antagonists known as Smac mimetics can reverse HIV-1 latency. Here, we describe the development of Ciapavir (SBI-0953294), a molecule specifically optimized for HIV-1 latency reversal that was found to be more efficacious as a latency-reversing agent than other Smac mimetics under clinical development for cancer. Critically, this molecule induced activation of HIV-1 reservoirs in vivo in a bone marrow, liver, thymus (BLT) humanized mouse model without mediating systemic T cell activation. This study provides proof of concept for the in vivo efficacy and safety of Ciapavir and indicates that Smac mimetics can constitute a critical component of a safe and efficacious treatment strategy to eliminate the latent HIV-1 reservoir.
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Affiliation(s)
- Lars Pache
- Infectious and Inflammatory Disease Center, Immunity and Pathogenesis Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Matthew D. Marsden
- Division of Hematology and Oncology, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Peter Teriete
- Cell Metabolism and Signaling Networks Program, NCI-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Alex J. Portillo
- Infectious and Inflammatory Disease Center, Immunity and Pathogenesis Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Dominik Heimann
- Cell Metabolism and Signaling Networks Program, NCI-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Jocelyn T. Kim
- Division of Infectious Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Mohamed S.A. Soliman
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Melanie Dimapasoc
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Camille Carmona
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Maria Celeridad
- Cell Metabolism and Signaling Networks Program, NCI-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Adam M. Spivak
- Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Vicente Planelles
- Division of Microbiology and Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Nicholas D.P. Cosford
- Cell Metabolism and Signaling Networks Program, NCI-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Jerome A. Zack
- Division of Hematology and Oncology, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Sumit K. Chanda
- Infectious and Inflammatory Disease Center, Immunity and Pathogenesis Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
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10
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Zhu Y, Smith DJ, Zhou Y, Li YR, Yu J, Lee D, Wang YC, Di Biase S, Wang X, Hardoy C, Ku J, Tsao T, Lin LJ, Pham AT, Moon H, McLaughlin J, Cheng D, Hollis RP, Campo-Fernandez B, Urbinati F, Wei L, Pang L, Rezek V, Berent-Maoz B, Macabali MH, Gjertson D, Wang X, Galic Z, Kitchen SG, An DS, Hu-Lieskovan S, Kaplan-Lefko PJ, De Oliveira SN, Seet CS, Larson SM, Forman SJ, Heath JR, Zack JA, Crooks GM, Radu CG, Ribas A, Kohn DB, Witte ON, Yang L. Development of Hematopoietic Stem Cell-Engineered Invariant Natural Killer T Cell Therapy for Cancer. Cell Stem Cell 2019; 25:542-557.e9. [PMID: 31495780 DOI: 10.1016/j.stem.2019.08.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/19/2019] [Accepted: 08/09/2019] [Indexed: 12/19/2022]
Abstract
Invariant natural killer T (iNKT) cells are potent immune cells for targeting cancer; however, their clinical application has been hindered by their low numbers in cancer patients. Here, we developed a proof-of-concept for hematopoietic stem cell-engineered iNKT (HSC-iNKT) cell therapy with the potential to provide therapeutic levels of iNKT cells for a patient's lifetime. Using a human HSC engrafted mouse model and a human iNKT TCR gene engineering approach, we demonstrated the efficient and long-term generation of HSC-iNKT cells in vivo. These HSC-iNKT cells closely resembled endogenous human iNKT cells, could deploy multiple mechanisms to attack tumor cells, and effectively suppressed tumor growth in vivo in multiple human tumor xenograft mouse models. Preclinical safety studies showed no toxicity or tumorigenicity of the HSC-iNKT cell therapy. Collectively, these results demonstrated the feasibility, safety, and cancer therapy potential of the proposed HSC-iNKT cell therapy and laid a foundation for future clinical development.
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Affiliation(s)
- Yanni Zhu
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Drake J Smith
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yang Zhou
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yan-Ruide Li
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jiaji Yu
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Derek Lee
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yu-Chen Wang
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Stefano Di Biase
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Xi Wang
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Christian Hardoy
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Josh Ku
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Tasha Tsao
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Levina J Lin
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alexander T Pham
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Heesung Moon
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jami McLaughlin
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Donghui Cheng
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Roger P Hollis
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Beatriz Campo-Fernandez
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Fabrizia Urbinati
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Liu Wei
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Ahmanson Translational Imaging Division, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Larry Pang
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Ahmanson Translational Imaging Division, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Valerie Rezek
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Beata Berent-Maoz
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Mignonette H Macabali
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - David Gjertson
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Biostatistics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Xiaoyan Wang
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Zoran Galic
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Scott G Kitchen
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Dong Sung An
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; School of Nursing, University of California, Los Angeles, Los Angeles, CA 90095, USA; AIDS Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Siwen Hu-Lieskovan
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Paula J Kaplan-Lefko
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Satiro N De Oliveira
- Department of Pediatrics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Christopher S Seet
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Sarah M Larson
- Department of Internal Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Stephen J Forman
- Hematological Malignancies and Hematopoietic Stem Cell Transplantation Institute, City of Hope, Duarte, CA 91010, USA
| | - James R Heath
- Institute for Systems Biology, Seattle, WA 98109, USA
| | - Jerome A Zack
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Gay M Crooks
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Pediatrics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Caius G Radu
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Ahmanson Translational Imaging Division, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Antoni Ribas
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Parker Institute for Cancer Immunotherapy, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Donald B Kohn
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Pediatrics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Owen N Witte
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA; Parker Institute for Cancer Immunotherapy, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Lili Yang
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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11
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Affiliation(s)
- Matthew D Marsden
- Department of Medicine, Division of Hematology & Oncology, The David Geffen School of Medicine at the University of California, Los Angeles, CA 90095, USA
| | - Jerome A Zack
- Department of Medicine, Division of Hematology & Oncology, The David Geffen School of Medicine at the University of California, Los Angeles, CA 90095, USA
- Department of Microbiology, Immunology, & Molecular Genetics, University of California, Los Angeles, CA 90095, USA
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12
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Marsden MD, Wu X, Navab SM, Loy BA, Schrier AJ, DeChristopher BA, Shimizu AJ, Hardman CT, Ho S, Ramirez CM, Wender PA, Zack JA. Characterization of designed, synthetically accessible bryostatin analog HIV latency reversing agents. Virology 2018; 520:83-93. [PMID: 29800728 PMCID: PMC6018613 DOI: 10.1016/j.virol.2018.05.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 11/15/2022]
Abstract
HIV latency in resting CD4+ T cell represents a key barrier preventing cure of the infection with antiretroviral drugs alone. Latency reversing agents (LRAs) can activate HIV expression in latently infected cells, potentially leading to their elimination through virus-mediated cytopathic effects, host immune responses, and/or therapeutic strategies targeting cells actively expressing virus. We have recently described several structurally simplified analogs of the PKC modulator LRA bryostatin (termed bryologs) designed to improve synthetic accessibility, tolerability in vivo, and efficacy in inducing HIV latency reversal. Here we report the comparative performance of lead bryologs, including their effects in reducing cell surface expression of HIV entry receptors, inducing proinflammatory cytokines, inhibiting short-term HIV replication, and synergizing with histone deacetylase inhibitors to reverse HIV latency. These data provide unique insights into structure-function relationships between A- and B-ring bryolog modifications and activities in primary cells, and suggest that bryologs represent promising leads for preclinical advancement.
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Affiliation(s)
- Matthew D Marsden
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, CA 90095, United States.
| | - Xiaomeng Wu
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA 90095, United States
| | - Sara M Navab
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, CA 90095, United States
| | - Brian A Loy
- Departments of Chemistry and of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, United States
| | - Adam J Schrier
- Departments of Chemistry and of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, United States
| | - Brian A DeChristopher
- Departments of Chemistry and of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, United States
| | - Akira J Shimizu
- Departments of Chemistry and of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, United States
| | - Clayton T Hardman
- Departments of Chemistry and of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, United States
| | - Stephen Ho
- Departments of Chemistry and of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, United States
| | - Christina M Ramirez
- Department of Biostatistics, School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, United States
| | - Paul A Wender
- Departments of Chemistry and of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, United States.
| | - Jerome A Zack
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, CA 90095, United States; Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, CA 90095, United States
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13
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Zhen A, Peterson CW, Carrillo MA, Reddy SS, Youn CS, Lam BB, Chang NY, Martin HA, Rick JW, Kim J, Neel NC, Rezek VK, Kamata M, Chen ISY, Zack JA, Kiem HP, Kitchen SG. Long-term persistence and function of hematopoietic stem cell-derived chimeric antigen receptor T cells in a nonhuman primate model of HIV/AIDS. PLoS Pathog 2017; 13:e1006753. [PMID: 29284044 PMCID: PMC5746250 DOI: 10.1371/journal.ppat.1006753] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/16/2017] [Indexed: 02/07/2023] Open
Abstract
Chimeric Antigen Receptor (CAR) T-cells have emerged as a powerful immunotherapy for various forms of cancer and show promise in treating HIV-1 infection. However, significant limitations are persistence and whether peripheral T cell-based products can respond to malignant or infected cells that may reappear months or years after treatment remains unclear. Hematopoietic Stem/Progenitor Cells (HSPCs) are capable of long-term engraftment and have the potential to overcome these limitations. Here, we report the use of a protective CD4 chimeric antigen receptor (C46CD4CAR) to redirect HSPC-derived T-cells against simian/human immunodeficiency virus (SHIV) infection in pigtail macaques. CAR-containing cells persisted for more than 2 years without any measurable toxicity and were capable of multilineage engraftment. Combination antiretroviral therapy (cART) treatment followed by cART withdrawal resulted in lower viral rebound in CAR animals relative to controls, and demonstrated an immune memory-like response. We found CAR-expressing cells in multiple lymphoid tissues, decreased tissue-associated SHIV RNA levels, and substantially higher CD4/CD8 ratios in the gut as compared to controls. These results show that HSPC-derived CAR T-cells are capable of long-term engraftment and immune surveillance. This study demonstrates for the first time the safety and feasibility of HSPC-based CAR therapy in a large animal preclinical model. Hematopoietic Stem/Progenitor Cell (HSPC) based gene therapy can be used to treat many infectious and genetic diseases. Here, we used an HSPC-based approach to redirect and enhance host immunity against HIV-1. We engineered HSPCs to carry chimeric antigen receptor (CAR) genes that detect and destroy HIV-infected cells. CAR therapy has shown huge potential in the treatment of cancer, but has only been applied in peripheral blood T-cells. HSPC-based CAR therapy has several benefits over T cell gene therapy, as it allows for normal T cell development, selection, and persistence of the engineered cells for the lifetime of the patient. We used a CAR molecule that hijacks the essential interaction between the virus and the cell surface molecule CD4 to redirect HSPC-derived T-cells against infected cells. We observed >2 years of stable production of CAR-expressing cells without any adverse events, and wide distribution of these cells in lymphoid tissues and gastrointestinal tract, which are major anatomic sites for HIV replication and persistence in suppressed patients. Most importantly, HSPC-derived CAR T-cells functionally responded to infected cells. This study demonstrates for the first time the safety and feasibility of HSPC based therapy utilizing an HIV-specific CAR for suppressed HIV infection.
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Affiliation(s)
- Anjie Zhen
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Christopher W. Peterson
- Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Departments of Medicine, University of Washington, Seattle, Washington, United States of America
| | - Mayra A. Carrillo
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Sowmya Somashekar Reddy
- Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Cindy S. Youn
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Brianna B. Lam
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Nelson Y. Chang
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Heather A. Martin
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Jonathan W. Rick
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Jennifer Kim
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Nick C. Neel
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Valerie K. Rezek
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Masakazu Kamata
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
| | - Irvin S. Y. Chen
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California, Los Angeles, California, United States of America
| | - Jerome A. Zack
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California, Los Angeles, California, United States of America
| | - Hans-Peter Kiem
- Stem Cell and Gene Therapy Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Departments of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Pathology, University of Washington, Seattle, Washington, United States of America
| | - Scott G. Kitchen
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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14
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Hazim RA, Karumbayaram S, Jiang M, Dimashkie A, Lopes VS, Li D, Burgess BL, Vijayaraj P, Alva-Ornelas JA, Zack JA, Kohn DB, Gomperts BN, Pyle AD, Lowry WE, Williams DS. Differentiation of RPE cells from integration-free iPS cells and their cell biological characterization. Stem Cell Res Ther 2017; 8:217. [PMID: 28969679 PMCID: PMC5625837 DOI: 10.1186/s13287-017-0652-9] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 08/16/2017] [Accepted: 08/29/2017] [Indexed: 01/18/2023] Open
Abstract
Background Dysfunction of the retinal pigment epithelium (RPE) is implicated in numerous forms of retinal degeneration. The readily accessible environment of the eye makes it particularly suitable for the transplantation of RPE cells, which can now be derived from autologous induced pluripotent stem cells (iPSCs), to treat retinal degeneration. For RPE transplantation to become feasible in the clinic, patient-specific somatic cells should be reprogrammed to iPSCs without the introduction of reprogramming genes into the genome of the host cell, and then subsequently differentiated into RPE cells that are well characterized for safety and functionality prior to transplantation. Methods We have reprogrammed human dermal fibroblasts to iPSCs using nonintegrating RNA, and differentiated the iPSCs toward an RPE fate (iPSC-RPE), under Good Manufacturing Practice (GMP)-compatible conditions. Results Using highly sensitive assays for cell polarity, structure, organelle trafficking, and function, we found that iPSC-RPE cells in culture exhibited key characteristics of native RPE. Importantly, we demonstrate for the first time with any stem cell-derived RPE cell that live cells are able to support dynamic organelle transport. This highly sensitive test is critical for RPE cells intended for transplantation, since defects in intracellular motility have been shown to promote RPE pathogenesis akin to that found in macular degeneration. To test their capabilities for in-vivo transplantation, we injected the iPSC-RPE cells into the subretinal space of a mouse model of retinal degeneration, and demonstrated that the transplanted cells are capable of rescuing lost RPE function. Conclusions This report documents the successful generation, under GMP-compatible conditions, of human iPSC-RPE cells that possess specific characteristics of healthy RPE. The report adds to a growing literature on the utility of human iPSC-RPE cells for cell culture investigations on pathogenicity and for therapeutic transplantation, by corroborating findings of others, and providing important new information on essential RPE cell biological properties. Electronic supplementary material The online version of this article (doi:10.1186/s13287-017-0652-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Roni A Hazim
- Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine at UCLA, 100 Stein Plaza, Los Angeles, CA, 90095, USA
| | - Saravanan Karumbayaram
- Department of Microbiology Immunology and Molecular Genetics, Los Angeles, CA, USA. .,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, Los Angeles, CA, USA. .,Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA.
| | - Mei Jiang
- Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine at UCLA, 100 Stein Plaza, Los Angeles, CA, 90095, USA
| | - Anupama Dimashkie
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, Los Angeles, CA, USA
| | - Vanda S Lopes
- Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine at UCLA, 100 Stein Plaza, Los Angeles, CA, 90095, USA
| | - Douran Li
- Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine at UCLA, 100 Stein Plaza, Los Angeles, CA, 90095, USA.,Department of Molecular Cell and Developmental Biology, Los Angeles, CA, USA
| | - Barry L Burgess
- Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine at UCLA, 100 Stein Plaza, Los Angeles, CA, 90095, USA
| | - Preethi Vijayaraj
- Department of Pediatrics, David Geffen School of Medicine, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | | | - Jerome A Zack
- Department of Microbiology Immunology and Molecular Genetics, Los Angeles, CA, USA.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA.,Department of Medicine, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Donald B Kohn
- Department of Microbiology Immunology and Molecular Genetics, Los Angeles, CA, USA.,Department of Pediatrics, David Geffen School of Medicine, Los Angeles, CA, USA.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Brigitte N Gomperts
- Department of Pediatrics, David Geffen School of Medicine, Los Angeles, CA, USA.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | - April D Pyle
- Department of Microbiology Immunology and Molecular Genetics, Los Angeles, CA, USA.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | - William E Lowry
- Department of Molecular Cell and Developmental Biology, Los Angeles, CA, USA.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | - David S Williams
- Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine at UCLA, 100 Stein Plaza, Los Angeles, CA, 90095, USA. .,Department of Neurobiology, David Geffen School of Medicine, Los Angeles, CA, USA. .,Molecular Biology Institute, Los Angeles, CA, USA. .,Brain Research Institute, University of California, Los Angeles, CA, USA.
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15
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Marsden MD, Loy BA, Wu X, Ramirez CM, Schrier AJ, Murray D, Shimizu A, Ryckbosch SM, Near KE, Chun TW, Wender PA, Zack JA. In vivo activation of latent HIV with a synthetic bryostatin analog effects both latent cell "kick" and "kill" in strategy for virus eradication. PLoS Pathog 2017; 13:e1006575. [PMID: 28934369 PMCID: PMC5608406 DOI: 10.1371/journal.ppat.1006575] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 08/10/2017] [Indexed: 12/27/2022] Open
Abstract
The ability of HIV to establish a long-lived latent infection within resting CD4+ T cells leads to persistence and episodic resupply of the virus in patients treated with antiretroviral therapy (ART), thereby preventing eradication of the disease. Protein kinase C (PKC) modulators such as bryostatin 1 can activate these latently infected cells, potentially leading to their elimination by virus-mediated cytopathic effects, the host's immune response and/or therapeutic strategies targeting cells actively expressing virus. While research in this area has focused heavily on naturally-occurring PKC modulators, their study has been hampered by their limited and variable availability, and equally significantly by sub-optimal activity and in vivo tolerability. Here we show that a designed, synthetically-accessible analog of bryostatin 1 is better-tolerated in vivo when compared with the naturally-occurring product and potently induces HIV expression from latency in humanized BLT mice, a proven and important model for studying HIV persistence and pathogenesis in vivo. Importantly, this induction of virus expression causes some of the newly HIV-expressing cells to die. Thus, designed, synthetically-accessible, tunable, and efficacious bryostatin analogs can mediate both a "kick" and "kill" response in latently-infected cells and exhibit improved tolerability, therefore showing unique promise as clinical adjuvants for HIV eradication.
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Affiliation(s)
- Matthew D. Marsden
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, California, United States of America
| | - Brian A. Loy
- Department of Chemistry and Department of Chemical and Systems Biology, Stanford University, Stanford, California, United States of America
| | - Xiaomeng Wu
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
| | - Christina M. Ramirez
- Department of Biostatistics, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America
| | - Adam J. Schrier
- Department of Chemistry and Department of Chemical and Systems Biology, Stanford University, Stanford, California, United States of America
| | - Danielle Murray
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Akira Shimizu
- Department of Chemistry and Department of Chemical and Systems Biology, Stanford University, Stanford, California, United States of America
| | - Steven M. Ryckbosch
- Department of Chemistry and Department of Chemical and Systems Biology, Stanford University, Stanford, California, United States of America
| | - Katherine E. Near
- Department of Chemistry and Department of Chemical and Systems Biology, Stanford University, Stanford, California, United States of America
| | - Tae-Wook Chun
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Paul A. Wender
- Department of Chemistry and Department of Chemical and Systems Biology, Stanford University, Stanford, California, United States of America
- * E-mail: (JAZ); (PAW)
| | - Jerome A. Zack
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, California, United States of America
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail: (JAZ); (PAW)
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16
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Abstract
Human immunodeficiency virus (HIV) remains a significant source of morbidity and mortality worldwide. No effective vaccine is available to prevent HIV transmission, and although antiretroviral therapy can prevent disease progression, it does not cure HIV infection. Substantial effort is therefore currently directed toward basic research on HIV pathogenesis and persistence and developing methods to stop the spread of the HIV epidemic and cure those individuals already infected with HIV. Humanized mice are versatile tools for the study of HIV and its interaction with the human immune system. These models generally consist of immunodeficient mice transplanted with human cells or reconstituted with a near-complete human immune system. Here, we describe the major humanized mouse models currently in use, and some recent advances that have been made in HIV research/therapeutics using these models.
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Affiliation(s)
- Matthew D Marsden
- Department of Medicine, Division of Hematology and Oncology, University of California, Los Angeles, California 90095;
| | - Jerome A Zack
- Department of Medicine, Division of Hematology and Oncology, University of California, Los Angeles, California 90095; .,Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, California 90095;
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17
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Yang L, 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. Propagating Humanized BLT Mice for the Study of Human Immunology and Immunotherapy. The Journal of Immunology 2017. [DOI: 10.4049/jimmunol.198.supp.157.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
The humanized BLT (bone marrow-liver-thymus) mouse model harbors a nearly complete human immune system, therefore providing a powerful tool to study human immunology and immunotherapy. However, its application is greatly limited by the restricted supply of human CD34+ hematopoietic stem cells and fetal thymus tissues that are needed to generate these mice. The restriction is especially significant for the study of human immune systems with special genetic traits, such as certain HLA (human leukocyte antigen) haplotypes or monogene deficiencies. In order to circumvent this critical limitation, we have developed a method to quickly propagate established BLT mice. Through secondary transfer of bone marrow cells and human thymus implants from BLT mice into NSG (NOD/SCID/IL-2Rγ−/−) recipient mice, we were able to expand one primary BLT mouse into a colony of 4–5 proBLT (propagated BLT) mice in 6–8 weeks. These proBLT mice reconstituted human immune cells, including T cells, at levels comparable to that of their primary BLT donor mouse. They also faithfully inherited the human immune cell genetic traits from their donor BLT mouse, such as the HLA-A2 haplotype that is of special interest for studying HLA-A2 restricted human T cell immunotherapies. Moreover, an EGFP reporter gene engineered into the human immune system was stably passed from BLT to proBLT mice, making proBLT mice suitable for studying human immune cell gene therapy. This method provides an opportunity to overcome a critical hurdle to utilizing the BLT humanized mouse model and enables its more widespread use as a valuable pre-clinical research tool.
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18
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Abstract
HIV remains a highly important public health and clinical issue despite many recent advances in attempting to develop a cure, which has remained elusive for most people infected with HIV. HIV disease can be controlled with pharmacologic therapies; however, these treatments are expensive, may have severe side effects, and are not curative. Consequently, an improved means to control or eliminate HIV replication is needed. Cytotoxic T lymphocytes (CTLs) play a critical role in controlling viral replication and are an important part in the ability of the immune response to eradicate most viral infections. There are considerable efforts to enhance CTL responses in HIV-infected individuals in hopes of providing the immune response with armaments to more effectively control viral replication. In this review, we discuss some of these efforts and focus on the development of a gene therapy-based approach to engineer hematopoietic stem cells with an HIV-1-specific chimeric antigen receptor, which seeks to provide an inexhaustible source of HIV-1-specific immune cells that are MHC unrestricted and superior to natural antiviral T cell responses. These efforts provide the basis for further development of T cell functional enhancement to target and treat chronic HIV infection in hopes of eradicating the virus from the body.
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Affiliation(s)
- Scott G. Kitchen
- Division of Hematology/Oncology, Department of Medicine, and UCLA Center for AIDS Research, UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Jerome A. Zack
- Division of Hematology/Oncology, Department of Medicine, and UCLA Center for AIDS Research, UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, California
- Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, California
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19
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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. Propagating Humanized BLT Mice for the Study of Human Immunology and Immunotherapy. Stem Cells Dev 2016; 25:1863-1873. [PMID: 27608727 DOI: 10.1089/scd.2016.0193] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The humanized bone marrow-liver-thymus (BLT) mouse model harbors a nearly complete human immune system, therefore providing a powerful tool to study human immunology and immunotherapy. However, its application is greatly limited by the restricted supply of human CD34+ hematopoietic stem cells and fetal thymus tissues that are needed to generate these mice. The restriction is especially significant for the study of human immune systems with special genetic traits, such as certain human leukocyte antigen (HLA) haplotypes or monogene deficiencies. To circumvent this critical limitation, we have developed a method to quickly propagate established BLT mice. Through secondary transfer of bone marrow cells and human thymus implants from BLT mice into NSG (NOD/SCID/IL-2Rγ-/-) recipient mice, we were able to expand one primary BLT mouse into a colony of 4-5 proBLT (propagated BLT) mice in 6-8 weeks. These proBLT mice reconstituted human immune cells, including T cells, at levels comparable to those of their primary BLT donor mouse. They also faithfully inherited the human immune cell genetic traits from their donor BLT mouse, such as the HLA-A2 haplotype that is of special interest for studying HLA-A2-restricted human T cell immunotherapies. Moreover, an EGFP reporter gene engineered into the human immune system was stably passed from BLT to proBLT mice, making proBLT mice suitable for studying human immune cell gene therapy. This method provides an opportunity to overcome a critical hurdle to utilizing the BLT humanized mouse model and enables its more widespread use as a valuable preclinical research tool.
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Affiliation(s)
- Drake J Smith
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California.,2 Molecular Biology Interdepartmental PhD Program, University of California , Los Angeles, California
| | - Levina J Lin
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California
| | - Heesung Moon
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California
| | - Alexander T Pham
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California
| | - Xi Wang
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California
| | - Siyuan Liu
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California
| | - Sunjong Ji
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California
| | - Valerie Rezek
- 3 Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California , Los Angeles, California.,4 Department of Medicine, University of California , Los Angeles, California.,5 AIDS Institute, University of California , Los Angeles, California
| | - Saki Shimizu
- 5 AIDS Institute, University of California , Los Angeles, California.,6 School of Nursing, University of California , Los Angeles, California
| | - Marlene Ruiz
- 5 AIDS Institute, University of California , Los Angeles, California.,6 School of Nursing, University of California , Los Angeles, California
| | - Jennifer Lam
- 5 AIDS Institute, University of California , Los Angeles, California.,6 School of Nursing, University of California , Los Angeles, California
| | - Deanna M Janzen
- 6 School of Nursing, University of California , Los Angeles, California.,7 Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California , Los Angeles, California
| | - Sanaz Memarzadeh
- 3 Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California , Los Angeles, California.,7 Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California , Los Angeles, California.,8 Molecular Biology Institute, University of California , Los Angeles, California.,9 Department of Obstetrics and Gynecology, University of California , Los Angeles, California
| | - Donald B Kohn
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California.,3 Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California , Los Angeles, California.,7 Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California , Los Angeles, California.,10 Department of Pediatrics, Division of Hematology/Oncology, University of California , Los Angeles, California
| | - Jerome A Zack
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California.,3 Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California , Los Angeles, California.,5 AIDS Institute, University of California , Los Angeles, California.,7 Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California , Los Angeles, California
| | - Scott G Kitchen
- 3 Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California , Los Angeles, California.,4 Department of Medicine, University of California , Los Angeles, California.,5 AIDS Institute, University of California , Los Angeles, California
| | - Dong Sung An
- 5 AIDS Institute, University of California , Los Angeles, California.,6 School of Nursing, University of California , Los Angeles, California
| | - Lili Yang
- 1 Department of Microbiology, Immunology and Molecular Genetics, University of California , Los Angeles, California.,3 Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California , Los Angeles, California.,7 Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California , Los Angeles, California.,8 Molecular Biology Institute, University of California , Los Angeles, California
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20
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Dou DR, Calvanese V, Sierra MI, Nguyen AT, Minasian A, Saarikoski P, Sasidharan R, Ramirez CM, Zack JA, Crooks GM, Galic Z, Mikkola HKA. Medial HOXA genes demarcate haematopoietic stem cell fate during human development. Nat Cell Biol 2016; 18:595-606. [PMID: 27183470 PMCID: PMC4981340 DOI: 10.1038/ncb3354] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 04/08/2016] [Indexed: 12/18/2022]
Abstract
Pluripotent stem cells (PSC) may provide a potential source of haematopoietic stem/progenitor cells (HSPCs) for transplantation; however, unknown molecular barriers prevent the self-renewal of PSC-HSPCs. Using two-step differentiation, human embryonic stem cells (hESCs) differentiated in vitro into multipotent haematopoietic cells that had CD34+CD38−/loCD90+CD45+GPI-80+ foetal liver (FL) HSC immunophenotype, but displayed poor expansion potential and engraftment ability. Transcriptome analysis of immunophenotypic hESC-HSPCs revealed that, despite their molecular resemblance to FL-HSPCs, medial HOXA genes remained suppressed. Knockdown of HOXA7 disrupted FL-HSPC function and caused transcriptome dysregulation that resembled hESC-derived progenitors. Overexpression of medial HOXA genes prolonged FL-HSPC maintenance but was insufficient to confer self-renewal to hESC-HSPCs. Stimulation of retinoic acid signalling during endothelial-to-haematopoietic transition induced the HOXA cluster and other HSC/definitive haemogenic endothelium genes, and prolonged HSPC maintenance in culture. Thus, retinoic acid signalling-induced medial HOXA gene expression marks the establishment of the definitive HSC fate and controls HSC identity and function.
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Affiliation(s)
- Diana R Dou
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA.,Molecular Biology Institute, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Vincenzo Calvanese
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Maria I Sierra
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Andrew T Nguyen
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Arazin Minasian
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Pamela Saarikoski
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Rajkumar Sasidharan
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Christina M Ramirez
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Jerome A Zack
- Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA.,Department of Medicine, Division of Hematology-Oncology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Gay M Crooks
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA.,Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Zoran Galic
- Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA.,Department of Medicine, Division of Hematology-Oncology, University of California, Los Angeles, Los Angeles, California 90095, USA
| | - Hanna K A Mikkola
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, California 90095, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California 90095, USA.,Molecular Biology Institute, University of California, Los Angeles, Los Angeles, California 90095, USA
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21
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Young CS, Hicks MR, Ermolova NV, Nakano H, Jan M, Younesi S, Karumbayaram S, Kumagai-Cresse C, Wang D, Zack JA, Kohn DB, Nakano A, Nelson SF, Miceli MC, Spencer MJ, Pyle AD. A Single CRISPR-Cas9 Deletion Strategy that Targets the Majority of DMD Patients Restores Dystrophin Function in hiPSC-Derived Muscle Cells. Cell Stem Cell 2016; 18:533-40. [PMID: 26877224 DOI: 10.1016/j.stem.2016.01.021] [Citation(s) in RCA: 262] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 12/18/2015] [Accepted: 01/22/2016] [Indexed: 12/28/2022]
Abstract
Mutations in DMD disrupt the reading frame, prevent dystrophin translation, and cause Duchenne muscular dystrophy (DMD). Here we describe a CRISPR/Cas9 platform applicable to 60% of DMD patient mutations. We applied the platform to DMD-derived hiPSCs where successful deletion and non-homologous end joining of up to 725 kb reframed the DMD gene. This is the largest CRISPR/Cas9-mediated deletion shown to date in DMD. Use of hiPSCs allowed evaluation of dystrophin in disease-relevant cell types. Cardiomyocytes and skeletal muscle myotubes derived from reframed hiPSC clonal lines had restored dystrophin protein. The internally deleted dystrophin was functional as demonstrated by improved membrane integrity and restoration of the dystrophin glycoprotein complex in vitro and in vivo. Furthermore, miR31 was reduced upon reframing, similar to observations in Becker muscular dystrophy. This work demonstrates the feasibility of using a single CRISPR pair to correct the reading frame for the majority of DMD patients.
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Affiliation(s)
- Courtney S Young
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA; Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Neurology, University of California, Los Angeles, CA 90095, USA
| | - Michael R Hicks
- Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
| | - Natalia V Ermolova
- Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Department of Neurology, University of California, Los Angeles, CA 90095, USA
| | - Haruko Nakano
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Majib Jan
- Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA; CIRM Bridges Program, California State University, Northridge, CA 91330, USA
| | - Shahab Younesi
- Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA; CIRM Bridges Program, California State University, Northridge, CA 91330, USA
| | - Saravanan Karumbayaram
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
| | - Chino Kumagai-Cresse
- Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Department of Neurology, University of California, Los Angeles, CA 90095, USA
| | - Derek Wang
- Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
| | - Jerome A Zack
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
| | - Donald B Kohn
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA; Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
| | - Atsushi Nakano
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA; Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095, USA
| | - Stanley F Nelson
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA; Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Human Genetics, University of California, Los Angeles, CA 90095, USA
| | - M Carrie Miceli
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA; Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
| | - Melissa J Spencer
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA; Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Neurology, University of California, Los Angeles, CA 90095, USA.
| | - April D Pyle
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA; Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA.
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22
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Akkina R, Allam A, Balazs AB, Blankson JN, Burnett JC, Casares S, Garcia JV, Hasenkrug KJ, Kashanchi F, Kitchen SG, Klein F, Kumar P, Luster AD, Poluektova LY, Rao M, Sanders-Beer BE, Shultz LD, Zack JA. Improvements and Limitations of Humanized Mouse Models for HIV Research: NIH/NIAID "Meet the Experts" 2015 Workshop Summary. AIDS Res Hum Retroviruses 2016; 32:109-19. [PMID: 26670361 DOI: 10.1089/aid.2015.0258] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The number of humanized mouse models for the human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) and other infectious diseases has expanded rapidly over the past 8 years. Highly immunodeficient mouse strains, such as NOD/SCID/gamma chain(null) (NSG, NOG), support better human hematopoietic cell engraftment. Another improvement is the derivation of highly immunodeficient mice, transgenic with human leukocyte antigens (HLAs) and cytokines that supported development of HLA-restricted human T cells and heightened human myeloid cell engraftment. Humanized mice are also used to study the HIV reservoir using new imaging techniques. Despite these advances, there are still limitations in HIV immune responses and deficits in lymphoid structures in these models in addition to xenogeneic graft-versus-host responses. To understand and disseminate the improvements and limitations of humanized mouse models to the scientific community, the NIH sponsored and convened a meeting on April 15, 2015 to discuss the state of knowledge concerning these questions and best practices for selecting a humanized mouse model for a particular scientific investigation. This report summarizes the findings of the NIH meeting.
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Affiliation(s)
- Ramesh Akkina
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado
| | - Atef Allam
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Silver Spring, Maryland
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | | | - Joel N. Blankson
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - John C. Burnett
- Department of Molecular and Cellular Biology, Beckman Research Institute of City of Hope, Duarte, California
| | - Sofia Casares
- U.S. Military Malaria Vaccine Program, Naval Medical Research Center, Silver Spring, Maryland
| | - J. Victor Garcia
- Division of Infectious Diseases, Department of Medicine, UNC Center for AIDS Research, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Kim J. Hasenkrug
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, NIAID, NIH, Hamilton, Montana
| | - Fatah Kashanchi
- School of Systems Biology, National Center for Biodefense and Infectious Diseases, George Mason University, Manassas, Virginia
| | - Scott G. Kitchen
- Departments of Medicine and Microbiology, Immunology and Molecular Genetics, UCLA AIDS Institute, Los Angeles, California
| | - Florian Klein
- First Department of Internal Medicine, University Hospital of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Priti Kumar
- School of Medicine, Infectious Diseases/Internal Medicine, Yale University, New Haven, Connecticut
| | - Andrew D. Luster
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Larisa Y. Poluektova
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska
| | - Mangala Rao
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Brigitte E. Sanders-Beer
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | | | - Jerome A. Zack
- Departments of Medicine and Microbiology, Immunology and Molecular Genetics, UCLA AIDS Institute, Los Angeles, California
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23
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Sanchez DJ, Miranda D, Marsden MD, Dizon TMA, Bontemps JR, Davila SJ, Del Mundo LE, Ha T, Senaati A, Zack JA, Cheng G. Disruption of Type I Interferon Induction by HIV Infection of T Cells. PLoS One 2015; 10:e0137951. [PMID: 26375588 PMCID: PMC4574156 DOI: 10.1371/journal.pone.0137951] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 08/24/2015] [Indexed: 11/18/2022] Open
Abstract
Our main objective of this study was to determine how Human Immunodeficiency Virus (HIV) avoids induction of the antiviral Type I Interferon (IFN) system. To limit viral infection, the innate immune system produces important antiviral cytokines such as the IFN. IFN set up a critical roadblock to virus infection by limiting further replication of a virus. Usually, IFN production is induced by the recognition of viral nucleic acids by innate immune receptors and subsequent downstream signaling. However, the importance of IFN in the defense against viruses has lead most pathogenic viruses to evolve strategies to inhibit host IFN induction or responses allowing for increased pathogenicity and persistence of the virus. While the adaptive immune responses to HIV infection have been extensively studied, less is known about the balance between induction and inhibition of innate immune defenses, including the antiviral IFN response, by HIV infection. Here we show that HIV infection of T cells does not induce significant IFN production even IFN I Interferon production. To explain this paradox, we screened HIV proteins and found that two HIV encoded proteins, Vpu and Nef, strongly antagonize IFN induction, with expression of these proteins leading to loss of expression of the innate immune viral RNA sensing adaptor protein, IPS-1 (IFN-β promoter stimulator-1). We hypothesize that with lower levels of IPS-1 present, infected cells are defective in mounting antiviral responses allowing HIV to replicate without the normal antiviral actions of the host IFN response. Using cell lines as well as primary human derived cells, we show that HIV targeting of IPS-1 is key to limiting IFN induction. These findings describe how HIV infection modulates IFN induction providing insight into the mechanisms by which HIV establishes infection and persistence in a host.
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Affiliation(s)
- David Jesse Sanchez
- Pharmaceutical Sciences Department, College of Pharmacy, Western University of Health Sciences, Pomona, California, United States of America
- * E-mail:
| | - Daniel Miranda
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
- UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Matthew D. Marsden
- UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Thomas Michael A. Dizon
- Pharmaceutical Sciences Department, College of Pharmacy, Western University of Health Sciences, Pomona, California, United States of America
| | - Johnny R. Bontemps
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
| | - Sergio J. Davila
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
| | - Lara E. Del Mundo
- Pharmaceutical Sciences Department, College of Pharmacy, Western University of Health Sciences, Pomona, California, United States of America
| | - Thai Ha
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
| | - Ashkon Senaati
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
| | - Jerome A. Zack
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
- UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America
| | - Genhong Cheng
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, United States of America
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24
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Dou DR, Calvanese V, Sierra MI, Sasidharan R, Zack JA, Crooks GM, Galic Z, Mikkola H. Medial HOXA gene expression is required for establishing “stemness” in human HSCs. Exp Hematol 2015. [DOI: 10.1016/j.exphem.2015.06.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Kim SG, Lowe EL, Dixit D, Youn CS, Kim IJ, Jung JB, Rovner R, Zack JA, Vatakis DN. Cocaine-mediated impact on HIV infection in humanized BLT mice. Sci Rep 2015; 5:10010. [PMID: 26084721 PMCID: PMC4471720 DOI: 10.1038/srep10010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 03/17/2015] [Indexed: 11/26/2022] Open
Abstract
Cocaine abuse has been shown to have broad-ranging effects on human immunity. With regards to HIV infection, in vitro studies have shown that cocaine enhances infection of stimulated lymphocytes. Moreover, cohort studies in the pre- and post-HAART era have linked stimulant abuse with increased HIV pathogenesis. The latter data, however, have been undermined by a series of confounding factors underscoring the importance of controlled in vivo models to fully assess the impact of cocaine use and abuse on HIV infection and pathogenesis. Here, we have infected humanized mice with HIV-1 following acute cocaine exposure to assess the impact on infection. Stimulant exposure resulted in increased inflammatory cytokine expression, accelerated HIV infection, while blunting effector function of cytotoxic T lymphocytes. These data demonstrate cocaine’s multifactorial impact on HIV infection that extends beyond high-risk behavior.
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Affiliation(s)
- Sohn G Kim
- 1] Department of Medicine, Division of Hematology-Oncology [2] UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
| | - Emily L Lowe
- 1] Department of Medicine, Division of Hematology-Oncology [2] UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
| | - Dhaval Dixit
- 1] Department of Medicine, Division of Hematology-Oncology [2] UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
| | - Cindy Seyeon Youn
- 1] Department of Medicine, Division of Hematology-Oncology [2] UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
| | - Irene J Kim
- 1] Department of Medicine, Division of Hematology-Oncology [2] UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
| | - James B Jung
- Department of Microbiology, Immunology and Molecular Genetics
| | - Robert Rovner
- Department of Molecular, Cell and Developmental Biology
| | - Jerome A Zack
- 1] Department of Medicine, Division of Hematology-Oncology [2] UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095 [3] Department of Microbiology, Immunology and Molecular Genetics
| | - Dimitrios N Vatakis
- 1] Department of Medicine, Division of Hematology-Oncology [2] UCLA AIDS Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
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26
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McCracken MN, Vatakis DN, Dixit D, McLaughlin J, Zack JA, Witte ON. Noninvasive detection of tumor-infiltrating T cells by PET reporter imaging. J Clin Invest 2015; 125:1815-26. [PMID: 25822024 DOI: 10.1172/jci77326] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 02/19/2015] [Indexed: 11/17/2022] Open
Abstract
Adoptive transfer of tumor-reactive T cells can successfully reduce tumor burden; however, in rare cases, lethal on-target/off-tumor effects have been reported. A noninvasive method to track engineered cells with high sensitivity and resolution would allow observation of correct cell homing and/or identification of dangerous off-target locations in preclinical and clinical applications. Human deoxycytidine kinase triple mutant (hdCK3mut) is a nonimmunogenic PET reporter that was previously shown to be an effective tool to monitor whole-body hematopoiesis. Here, we engineered a construct in which hdCK3mut is coexpressed with the anti-melanoma T cell receptor F5, introduced this construct into human CD34 cells or PBMCs, and evaluated this approach in multiple immunotherapy models. Expression of hdCK3mut allowed engrafted cells to be visualized within recipient bone marrow, while accumulation of [18F]-L-FMAU in hdCK3mut-expressing T cells permitted detection of intratumoral homing. Animals that received T cells coexpressing hdCK3mut and the anti-melanoma T cell receptor had demonstrably higher signals in HLA-matched tumors compared with those in animals that received cells solely expressing hdCK3mut. Engineered T cells caused cytotoxicity in HLA/antigen-matched tumors and induced IFN-γ production and activation. Moreover, hdCK3mut permitted simultaneous monitoring of engraftment and tumor infiltration, without affecting T cell function. Our findings suggest that hdCK3mut reporter imaging can be applied in clinical immunotherapies for whole-body detection of engineered cell locations.
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MESH Headings
- Animals
- Bone Marrow/diagnostic imaging
- Chemotaxis, Leukocyte
- Cytotoxicity Tests, Immunologic
- Deoxycytidine Kinase/analysis
- Deoxycytidine Kinase/genetics
- Genes, Reporter
- Genes, Synthetic
- Genetic Vectors/genetics
- Graft Survival
- HLA-A2 Antigen/immunology
- Hematopoietic Stem Cell Transplantation
- Hematopoietic Stem Cells/chemistry
- Hematopoietic Stem Cells/physiology
- Humans
- Immunotherapy/methods
- Immunotherapy, Adoptive
- Interferon-gamma Release Tests
- Lentivirus/genetics
- Leukocytes, Mononuclear/chemistry
- Leukocytes, Mononuclear/physiology
- Leukocytes, Mononuclear/transplantation
- Lymphocytes, Tumor-Infiltrating/immunology
- MART-1 Antigen/immunology
- Melanoma, Experimental/immunology
- Melanoma, Experimental/therapy
- Mice
- Mutation
- Positron-Emission Tomography
- Receptors, Antigen, T-Cell/analysis
- Receptors, Antigen, T-Cell/genetics
- Recombinant Fusion Proteins/analysis
- Recombinant Fusion Proteins/genetics
- Retroviridae/genetics
- T-Lymphocytes/immunology
- T-Lymphocytes/transplantation
- Thymus Gland/transplantation
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27
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Menon T, Firth AL, Scripture-Adams DD, Galic Z, Qualls SJ, Gilmore WB, Ke E, Singer O, Anderson LS, Bornzin AR, Alexander IE, Zack JA, Verma IM. Lymphoid regeneration from gene-corrected SCID-X1 subject-derived iPSCs. Cell Stem Cell 2015; 16:367-72. [PMID: 25772073 DOI: 10.1016/j.stem.2015.02.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 01/16/2015] [Accepted: 02/10/2015] [Indexed: 12/24/2022]
Abstract
X-linked Severe Combined Immunodeficiency (SCID-X1) is a genetic disease that leaves newborns at high risk of serious infection and a predicted life span of less than 1 year in the absence of a matched bone marrow donor. The disease pathogenesis is due to mutations in the gene encoding the Interleukin-2 receptor gamma chain (IL-2Rγ), leading to a lack of functional lymphocytes. With the leukemogenic concerns of viral gene therapy there is a need to explore alternative therapeutic options. We have utilized induced pluripotent stem cell (iPSC) technology and genome editing mediated by TALENs to generate isogenic subject-specific mutant and gene-corrected iPSC lines. While the subject-derived mutant iPSCs have the capacity to generate hematopoietic precursors and myeloid cells, only wild-type and gene-corrected iPSCs can additionally generate mature NK cells and T cell precursors expressing the correctly spliced IL-2Rγ. This study highlights the potential for the development of autologous cell therapy for SCID-X1 subjects.
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Affiliation(s)
- Tushar Menon
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Amy L Firth
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Deirdre D Scripture-Adams
- David Geffen School of Medicine at UCLA, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-1678; UCLA AIDS Institute, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-1678
| | - Zoran Galic
- David Geffen School of Medicine at UCLA, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-1678; Broad Stem Cell Research Center, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-1678
| | - Susan J Qualls
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - William B Gilmore
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Eugene Ke
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Oded Singer
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Leif S Anderson
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Alexander R Bornzin
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Ian E Alexander
- Gene Therapy Research Unit, Children's Medical Research Institute and The Children's Hospital at Westmead, Wentworthville, NSW 2145, Australia
| | - Jerome A Zack
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-1678; David Geffen School of Medicine at UCLA, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-1678; UCLA AIDS Institute, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-1678; Broad Stem Cell Research Center, University of California, Los Angeles, 10833 Le Conte Avenue, Los Angeles, CA 90095-1678
| | - Inder M Verma
- The Salk Institute of Biological Studies, Laboratory of Genetics, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.
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28
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Nixon CC, Schwartz BH, Dixit D, Zack JA, Vatakis DN. Cocaine exposure impairs multilineage hematopoiesis of human hematopoietic progenitor cells mediated by the sigma-1 receptor [corrected]. Sci Rep 2015; 5:8670. [PMID: 25728014 PMCID: PMC4345342 DOI: 10.1038/srep08670] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 01/15/2015] [Indexed: 12/02/2022] Open
Abstract
Prenatal exposure to cocaine is a significant source of fetal and neonatal developmental defects. While cocaine associated neurological and cardiac pathologies are well-documented, it is apparent that cocaine use has far more diverse physiological effects. It is known that in some cell types, the sigma-1 receptor mediates many of cocaine's cellular effects. Here we present a novel and concise investigation into the mechanism that underlies cocaine associated hematopoietic pathology. Indeed, this is the first examination of the effects of cocaine on hematopoiesis. We show that cocaine impairs multilineage hematopoiesis from human progenitors from multiple donors and tissue types. We go on to present the first demonstration of the expression of the sigma-1 receptor in human CD34 + human hematopoietic stem/progenitor cells. Furthermore, we demonstrate that these cocaine-induced hematopoietic defects can be reversed through sigma-1 receptor blockade.
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Affiliation(s)
- Christopher C. Nixon
- Department of Microbiology, Immunology, & Molecular Genetics, UCLA
- UCLA AIDS Institute, David Geffen School of Medicine, UCLA
| | - Brandon H. Schwartz
- Department of Integrative Biology & Physiology, UCLA
- UCLA AIDS Institute, David Geffen School of Medicine, UCLA
| | - Dhaval Dixit
- Department of Microbiology, Immunology, & Molecular Genetics, UCLA
- UCLA AIDS Institute, David Geffen School of Medicine, UCLA
| | - Jerome A. Zack
- Department of Microbiology, Immunology, & Molecular Genetics, UCLA
- Department of Hematology/Oncology, Division of Medicine, David Geffen School of Medicine, UCLA
- UCLA AIDS Institute, David Geffen School of Medicine, UCLA
| | - Dimitrios N. Vatakis
- Department of Hematology/Oncology, Division of Medicine, David Geffen School of Medicine, UCLA
- UCLA AIDS Institute, David Geffen School of Medicine, UCLA
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29
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Shimizu S, Ringpis GE, Marsden MD, Cortado RV, Wilhalme HM, Elashoff D, Zack JA, Chen ISY, An DS. RNAi-Mediated CCR5 Knockdown Provides HIV-1 Resistance to Memory T Cells in Humanized BLT Mice. Mol Ther Nucleic Acids 2015; 4:e227. [PMID: 25689223 PMCID: PMC4345313 DOI: 10.1038/mtna.2015.3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 01/06/2015] [Indexed: 11/20/2022]
Abstract
Transplantation of hematopoietic stem/progenitor cells (HSPC) modified with a lentiviral vector bearing a potent nontoxic short hairpin RNA (sh1005) directed to the HIV coreceptor CCR5 is capable of continuously producing CCR5 downregulated CD4+ T lymphocytes. Here, we characterized HIV-1 resistance of the sh1005-modified CD4+ T lymphocytes in vivo in humanized bone marrow/liver/thymus (hu BLT) mice. The sh1005-modified CD4+ T lymphocytes were positively selected in CCR5-tropic HIV-1-challenged mice. The sh1005-modified memory CD4+ T lymphocytes (the primary target of CCR5-tropic HIV-1) expressing sh1005 were maintained in lymphoid tissues in CCR5-tropic HIV-1-challenged mice. Frequencies of HIV-1 p24 expressing cells were significantly reduced in the sh1005-modified splenocytes by ex vivo cell stimulation confirming that CCR5 downregulated sh1005 modified cells are protected from viral infection. These results demonstrate that stable CCR5 downregulation through genetic modification of human HSPC by lentivirally delivered sh1005 is highly effective in providing HIV-1 resistance. Our results provide in vivo evidence in a relevant small animal model that sh1005 is a potent early-step anti-HIV reagent that has potential as a novel anti-HIV-1 HSPC gene therapeutic reagent for human applications.
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Affiliation(s)
- Saki Shimizu
- Hematology-Oncology, the Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
- School of Nursing, University of California, Los Angeles, California, USA
- UCLA AIDS Institute, Los Angeles, California, USA
| | - Gene-Errol Ringpis
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, California, USA
- UCLA AIDS Institute, Los Angeles, California, USA
| | - Matthew D Marsden
- Hematology-Oncology, the Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
- UCLA AIDS Institute, Los Angeles, California, USA
| | - Ruth V Cortado
- School of Nursing, University of California, Los Angeles, California, USA
- UCLA AIDS Institute, Los Angeles, California, USA
| | - Holly M Wilhalme
- Department of Medicine Statistics Core, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - David Elashoff
- Department of Medicine Statistics Core, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Jerome A Zack
- Hematology-Oncology, the Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, California, USA
- UCLA AIDS Institute, Los Angeles, California, USA
| | - Irvin S Y Chen
- Hematology-Oncology, the Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, California, USA
- UCLA AIDS Institute, Los Angeles, California, USA
| | - Dong Sung An
- Hematology-Oncology, the Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
- School of Nursing, University of California, Los Angeles, California, USA
- UCLA AIDS Institute, Los Angeles, California, USA
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30
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Abstract
Many important aspects of human retroviral infections cannot be fully evaluated using only in vitro systems or unmodified animal models. An alternative approach involves the use of humanized mice, which consist of immunodeficient mice that have been transplanted with human cells and/or tissues. Certain humanized mouse models can support robust infection with human retroviruses including different strains of human immunodeficiency virus (HIV) and human T cell leukemia virus (HTLV). These models have provided wide-ranging insights into retroviral biology, including detailed information on primary infection, in vivo replication and pathogenesis, latent/persistent reservoir formation, and novel therapeutic interventions. Here we describe the humanized mouse models that are most commonly utilized to study retroviral infections, and outline some of the important discoveries that these models have produced during several decades of intensive research.
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Affiliation(s)
- Matthew D Marsden
- Department of Medicine, Division of Hematology and Oncology, University of California, Los Angeles, CA 90095, USA
| | - Jerome A Zack
- Department of Medicine, Division of Hematology and Oncology, University of California, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA.
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31
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Abstract
Antiretroviral therapy (ART) can reduce HIV viral loads to undetectable levels and prevent disease progression. However, HIV persists in rare cellular reservoirs within ART-treated patients and rapidly reemerges if ART is stopped. Latently infected CD4+ T cells represent a major reservoir of HIV that persists during ART. Therefore, a cure for HIV must include methods that either permanently inactivate or eliminate latent virus. Experimental methods under investigation for eliminating latently infected cells include transplantation/gene therapy approaches intended to deplete the infected cells and replace them with HIV-resistant ones, and DNA editing strategies that are capable of damaging or excising non-expressing HIV proviruses. Alternatively, "activation-elimination," also known as "shock and kill," approaches aim to induce expression of latent virus, allowing the virus to be eliminated by viral cytopathic effects, immune effector mechanisms, or additional cells/antibodies that specifically target and kill cells expressing HIV proteins. Here, we describe these experimental approaches for eliminating latent HIV along with other recent advances in HIV cure research.
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Affiliation(s)
- Matthew D Marsden
- Department of Medicine, Division of Hematology and Oncology, University of California, Los Angeles, CA
| | - Jerome A Zack
- Department of Medicine, Division of Hematology and Oncology, University of California, Los Angeles, CA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA
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32
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Buehler DC, Marsden MD, Shen S, Toso DB, Wu X, Loo JA, Zhou ZH, Kickhoefer VA, Wender PA, Zack JA, Rome LH. Bioengineered vaults: self-assembling protein shell-lipophilic core nanoparticles for drug delivery. ACS Nano 2014; 8:7723-32. [PMID: 25061969 PMCID: PMC4148163 DOI: 10.1021/nn5002694] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 07/25/2014] [Indexed: 05/22/2023]
Abstract
We report a novel approach to a new class of bioengineered, monodispersed, self-assembling vault nanoparticles consisting of a protein shell exterior with a lipophilic core interior designed for drug and probe delivery. Recombinant vaults were engineered to contain a small amphipathic α-helix derived from the nonstructural protein 5A of hepatitis C virus, thereby creating within the vault lumen a lipophilic microenvironment into which lipophilic compounds could be reversibly encapsulated. Multiple types of electron microscopy showed that attachment of this peptide resulted in larger than expected additional mass internalized within the vault lumen attributable to incorporation of host lipid membrane constituents spanning the vault waist (>35 nm). These bioengineered lipophilic vaults reversibly associate with a sample set of therapeutic compounds, including all-trans retinoic acid, amphotericin B, and bryostatin 1, incorporating hundreds to thousands of drug molecules per vault nanoparticle. Bryostatin 1 is of particular therapeutic interest because of its ability to potently induce expression of latent HIV, thus representing a preclinical lead in efforts to eradicate HIV/AIDS. Vaults loaded with bryostatin 1 released free drug, resulting in activation of HIV from provirus latency in vitro and induction of CD69 biomarker expression following intravenous injection into mice. The ability to preferentially and reversibly encapsulate lipophilic compounds into these novel bioengineered vault nanoparticles greatly advances their potential use as drug delivery systems.
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Affiliation(s)
- Daniel C. Buehler
- Department of Biological Chemistry, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305, United States
| | - Matthew D. Marsden
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Sean Shen
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Daniel B. Toso
- Department of Microbiology, Immunology, & Molecular Genetics, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Xiaomeng Wu
- Department of Microbiology, Immunology, & Molecular Genetics, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Joseph A. Loo
- Department of Biological Chemistry, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
- UCLA−DOE Institute for Genomics and Proteomics, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Z. Hong Zhou
- Department of Microbiology, Immunology, & Molecular Genetics, University of California Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute at University of California Los Angeles, Los Angeles, California 90095, United States
| | - Valerie A. Kickhoefer
- Department of Biological Chemistry, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California 90095, United States
| | - Paul A. Wender
- Department of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305, United States
| | - Jerome A. Zack
- Department of Microbiology, Immunology, & Molecular Genetics, University of California Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute at University of California Los Angeles, Los Angeles, California 90095, United States
- Address correspondence to ;
| | - Leonard H. Rome
- Department of Biological Chemistry, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute at University of California Los Angeles, Los Angeles, California 90095, United States
- Address correspondence to ;
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Chodon T, Comin-Anduix B, Chmielowski B, Koya RC, Wu Z, Auerbach M, Ng C, Avramis E, Seja E, Villanueva A, McCannel TA, Ishiyama A, Czernin J, Radu CG, Wang X, Gjertson DW, Cochran AJ, Cornetta K, Wong DJL, Kaplan-Lefko P, Hamid O, Samlowski W, Cohen PA, Daniels GA, Mukherji B, Yang L, Zack JA, Kohn DB, Heath JR, Glaspy JA, Witte ON, Baltimore D, Economou JS, Ribas A. Adoptive transfer of MART-1 T-cell receptor transgenic lymphocytes and dendritic cell vaccination in patients with metastatic melanoma. Clin Cancer Res 2014; 20:2457-65. [PMID: 24634374 DOI: 10.1158/1078-0432.ccr-13-3017] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE It has been demonstrated that large numbers of tumor-specific T cells for adoptive cell transfer (ACT) can be manufactured by retroviral genetic engineering of autologous peripheral blood lymphocytes and expanding them over several weeks. In mouse models, this therapy is optimized when administered with dendritic cell (DC) vaccination. We developed a short 1-week manufacture protocol to determine the feasibility, safety, and antitumor efficacy of this double cell therapy. EXPERIMENTAL DESIGN A clinical trial (NCT00910650) adoptively transferring MART-1 T-cell receptor (TCR) transgenic lymphocytes together with MART-1 peptide-pulsed DC vaccination in HLA-A2.1 patients with metastatic melanoma. Autologous TCR transgenic cells were manufactured in 6 to 7 days using retroviral vector gene transfer, and reinfused with (n = 10) or without (n = 3) prior cryopreservation. RESULTS A total of 14 patients with metastatic melanoma were enrolled and 9 of 13 treated patients (69%) showed evidence of tumor regression. Peripheral blood reconstitution with MART-1-specific T cells peaked within 2 weeks of ACT, indicating rapid in vivo expansion. Administration of freshly manufactured TCR transgenic T cells resulted in a higher persistence of MART-1-specific T cells in the blood as compared with cryopreserved. Evidence that DC vaccination could cause further in vivo expansion was only observed with ACT using noncryopreserved T cells. CONCLUSION Double cell therapy with ACT of TCR-engineered T cells with a very short ex vivo manipulation and DC vaccines is feasible and results in antitumor activity, but improvements are needed to maintain tumor responses.
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Affiliation(s)
- Thinle Chodon
- Authors' Affiliations: Departments of Medicine, Surgery, Pathology and Laboratory Medicine, Microbiology, Immunology and Molecular Genetics, and Molecular and Medical Pharmacology; Jonsson Comprehensive Cancer Center; Department of Ophthalmology, Jules Stein Eye Institute; Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research; Howard Hughes Medical Institute, University of California, Los Angeles (UCLA); The Angeles Clinic Research Institute, Los Angeles; Department of Medicine, University of California San Diego (UCSD) Moores Cancer Center, La Jolla; Divisions of Chemistry and Biology, California Institute of Technology, Pasadena, California; Department of Medical and Molecular Genetics, Indiana University, and the Indiana University Viral Production Facility (IU VPF), Indianapolis, Indiana; Comprehensive Cancer Centers of Nevada, Las Vegas, Nevada; Mayo Clinic Scottsdale, Scottsdale, Arizona; Department of Medicine, University of Connecticut Health Center, Farmington, Connecticut; and Center for Immunology, Roswell Park Cancer Institute, Buffalo, New York
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Kim SG, Jung JB, Dixit D, Rovner R, Zack JA, Baldwin GC, Vatakis DN. Cocaine exposure enhances permissiveness of quiescent T cells to HIV infection. J Leukoc Biol 2013; 94:835-43. [PMID: 23817564 PMCID: PMC3774841 DOI: 10.1189/jlb.1112566] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 06/13/2013] [Accepted: 06/18/2013] [Indexed: 01/19/2023] Open
Abstract
In vivo and in vitro exposure to stimulants has been associated with increased levels of HIV infection in PBMCs. Among these lymphocyte subsets, quiescent CD4(+) T cells make up the majority of circulating T cells in the blood. Others and we have demonstrated that HIV infects this population of cells inefficiently. However, minor changes in their cell state can render them permissive to infection, significantly impacting the viral reservoir. We have hypothesized that stimulants, such as cocaine, may perturb the activation state of quiescent cells enhancing permissiveness to infection. Quiescent T cells isolated from healthy human donors were exposed to cocaine and infected with HIV. Samples were harvested at different time-points to assess the impact of cocaine on their susceptibility to infection at various stages of the HIV life cycle. Our data show that a 3-day exposure to cocaine enhanced infection of quiescent cells, an effect that appears to be mediated by σ1R and D4R. Overall, our results indicate that cocaine-mediated effects on quiescent T cells may increase the pool of infection-susceptible T cells. The latter underscores the impact that stimulants have on HIV-seropositive individuals and the challenges posed for treatment.
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Affiliation(s)
- Sohn G Kim
- 1.David Geffen School of Medicine, 615 Charles E. Young Dr. S., BSRB 173, Mail Code 736322, Los Angeles, CA 90095, USA. ; Twitter: https://twitter.com/vatakisd
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Awe JP, Lee PC, Ramathal C, Vega-Crespo A, Durruthy-Durruthy J, Cooper A, Karumbayaram S, Lowry WE, Clark AT, Zack JA, Sebastiano V, Kohn DB, Pyle AD, Martin MG, Lipshutz GS, Phelps PE, Pera RAR, Byrne JA. Generation and characterization of transgene-free human induced pluripotent stem cells and conversion to putative clinical-grade status. Stem Cell Res Ther 2013; 4:87. [PMID: 23890092 PMCID: PMC3854769 DOI: 10.1186/scrt246] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 07/17/2013] [Indexed: 02/06/2023] Open
Abstract
Introduction The reprogramming of a patient’s somatic cells back into induced pluripotent stem cells (iPSCs) holds significant promise for future autologous cellular therapeutics. The continued presence of potentially oncogenic transgenic elements following reprogramming, however, represents a safety concern that should be addressed prior to clinical applications. The polycistronic stem cell cassette (STEMCCA), an excisable lentiviral reprogramming vector, provides, in our hands, the most consistent reprogramming approach that addresses this safety concern. Nevertheless, most viral integrations occur in genes, and exactly how the integration, epigenetic reprogramming, and excision of the STEMCCA reprogramming vector influences those genes and whether these cells still have clinical potential are not yet known. Methods In this study, we used both microarray and sensitive real-time PCR to investigate gene expression changes following both intron-based reprogramming and excision of the STEMCCA cassette during the generation of human iPSCs from adult human dermal fibroblasts. Integration site analysis was conducted using nonrestrictive linear amplification PCR. Transgene-free iPSCs were fully characterized via immunocytochemistry, karyotyping and teratoma formation, and current protocols were implemented for guided differentiation. We also utilized current good manufacturing practice guidelines and manufacturing facilities for conversion of our iPSCs into putative clinical grade conditions. Results We found that a STEMCCA-derived iPSC line that contains a single integration, found to be located in an intronic location in an actively transcribed gene, PRPF39, displays significantly increased expression when compared with post-excised stem cells. STEMCCA excision via Cre recombinase returned basal expression levels of PRPF39. These cells were also shown to have proper splicing patterns and PRPF39 gene sequences. We also fully characterized the post-excision iPSCs, differentiated them into multiple clinically relevant cell types (including oligodendrocytes, hepatocytes, and cardiomyocytes), and converted them to putative clinical-grade conditions using the same approach previously approved by the US Food and Drug Administration for the conversion of human embryonic stem cells from research-grade to clinical-grade status. Conclusion For the first time, these studies provide a proof-of-principle for the generation of fully characterized transgene-free human iPSCs and, in light of the limited availability of current good manufacturing practice cellular manufacturing facilities, highlight an attractive potential mechanism for converting research-grade cell lines into putatively clinical-grade biologics for personalized cellular therapeutics.
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Abstract
Antiretroviral therapy can inhibit HIV replication in patients and prevent progression to AIDS. However, it is not curative. Here we provide an overview of what antiretroviral drugs do and how the virus persists during therapy in rare reservoirs, such as latently infected CD4+ T cells. We also outline several innovative methods that are currently under development to eradicate HIV from infected individuals. These strategies include gene therapy approaches intended to create an HIV-resistant immune system, and activation/elimination approaches directed towards flushing out latent virus. This latter approach could involve the use of novel chemically synthesized analogs of natural activating agents.
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Affiliation(s)
- Matthew D. Marsden
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, California, 90095
| | - Jerome A. Zack
- Department of Medicine, Division of Hematology and Oncology, University of California Los Angeles, Los Angeles, California, 90095
- Department of Microbiology, Immunology, and Molecular Genetics, University of California Los Angeles, Los Angeles, California, 90095
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Abstract
The restriction of the Human Immunodeficiency Virus (HIV) infection in quiescent CD4+ T cells has been an area of active investigation. Early studies have suggested that this T cell subset is refractory to infection by the virus. Subsequently it was demonstrated that quiescent cells could be infected at low levels; nevertheless these observations supported the earlier assertions of debilitating defects in the viral life cycle. This phenomenon raised hopes that identification of the block in quiescent cells could lead to the development of new therapies against HIV. As limiting levels of raw cellular factors such as nucleotides did not account for the block to infection, a number of groups pursued the identification of cellular proteins whose presence or absence may impact the permissiveness of quiescent T cells to HIV infection. A series of studies in the past few years have identified a number of host factors implicated in the block to infection. In this review, we will present the progress made, other avenues of investigation and the potential impact these studies have in the development of more effective therapies against HIV.
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Affiliation(s)
- Jerome A Zack
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
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Liu SY, Aliyari R, Chikere K, Li G, Marsden MD, Smith JK, Pernet O, Guo H, Nusbaum R, Zack JA, Freiberg AN, Su L, Lee B, Cheng G. Interferon-inducible cholesterol-25-hydroxylase broadly inhibits viral entry by production of 25-hydroxycholesterol. Immunity 2012; 38:92-105. [PMID: 23273844 DOI: 10.1016/j.immuni.2012.11.005] [Citation(s) in RCA: 482] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 09/20/2012] [Indexed: 12/13/2022]
Abstract
Interferons (IFN) are essential antiviral cytokines that establish the cellular antiviral state through upregulation of hundreds of interferon-stimulated genes (ISGs), most of which have uncharacterized functions and mechanisms. We identified cholesterol-25-hydroxylase (CH25H) as a broadly antiviral ISG. CH25H converts cholesterol to a soluble antiviral factor, 25-hydroxycholesterol (25HC). 25HC treatment in cultured cells broadly inhibited growth of enveloped viruses including VSV, HSV, HIV, and MHV68 and acutely pathogenic EBOV, RVFV, RSSEV, and Nipah viruses under BSL4 conditions. It suppressed viral growth by blocking membrane fusion between virus and cell. In animal models, Ch25h-deficient mice were more susceptible to MHV68 lytic infection. Moreover, administration of 25HC in humanized mice suppressed HIV replication and reversed T cell depletion. Thus, our studies demonstrate a unique mechanism by which IFN achieves its antiviral state through the production of a natural oxysterol to inhibit viral entry and implicate membrane-modifying oxysterols as potential antiviral therapeutics.
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Affiliation(s)
- Su-Yang Liu
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
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Vatakis DN, Bristol GC, Kim SG, Levin B, Liu W, Radu CG, Kitchen SG, Zack JA. Using the BLT humanized mouse as a stem cell based gene therapy tumor model. J Vis Exp 2012:e4181. [PMID: 23271478 DOI: 10.3791/4181] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Small animal models such as mice have been extensively used to study human disease and to develop new therapeutic interventions. Despite the wealth of information gained from these studies, the unique characteristics of mouse immunity as well as the species specificity of viral diseases such as human immunodeficiency virus (HIV) infection led to the development of humanized mouse models. The earlier models involved the use of C. B 17 scid/scid mice and the transplantation of human fetal thymus and fetal liver termed thy/liv (SCID-hu) (1, 2) or the adoptive transfer of human peripheral blood leukocytes (SCID-huPBL) (3). Both models were mainly utilized for the study of HIV infection. One of the main limitations of both of these models was the lack of stable reconstitution of human immune cells in the periphery to make them a more physiologically relevant model to study HIV disease. To this end, the BLT humanized mouse model was developed. BLT stands for bone marrow/liver/thymus. In this model, 6 to 8 week old NOD.Cg-Prkdcscid Il2rgtm1Wjl/SzJ (NSG) immunocompromised mice receive the thy/liv implant as in the SCID-hu mouse model only to be followed by a second human hematopoietic stem cell transplant (4). The advantage of this system is the full reconstitution of the human immune system in the periphery. This model has been used to study HIV infection and latency (5-8). We have generated a modified version of this model in which we use genetically modified human hematopoietic stem cells (hHSC) to construct the thy/liv implant followed by injection of transduced autologous hHSC (7, 9). This approach results in the generation of genetically modified lineages. More importantly, we adapted this system to examine the potential of generating functional cytotoxic T cells (CTL) expressing a melanoma specific T cell receptor. Using this model we were able to assess the functionality of our transgenic CTL utilizing live positron emission tomography (PET) imaging to determine tumor regression (9). The goal of this protocol is to describe the process of generating these transgenic mice and assessing in vivo efficacy using live PET imaging. As a note, since we use human tissues and lentiviral vectors, our facilities conform to CDC NIH guidelines for Biosafety Level 2 (BSL2) with special precautions (BSL2+). In addition, the NSG mice are severely immunocompromised thus, their housing and maintenance must conform to the highest health standards (http://jaxmice.jax.org/research/immunology/005557-housing.html).
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Affiliation(s)
- Dimitrios N Vatakis
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine at UCLA.
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Kitchen SG, Levin BR, Bristol G, Rezek V, Kim S, Aguilera-Sandoval C, Balamurugan A, Yang OO, Zack JA. In vivo suppression of HIV by antigen specific T cells derived from engineered hematopoietic stem cells. PLoS Pathog 2012; 8:e1002649. [PMID: 22511873 PMCID: PMC3325196 DOI: 10.1371/journal.ppat.1002649] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 03/02/2012] [Indexed: 01/08/2023] Open
Abstract
The HIV-specific cytotoxic T lymphocyte (CTL) response is a critical component in controlling viral replication in vivo, but ultimately fails in its ability to eradicate the virus. Our intent in these studies is to develop ways to enhance and restore the HIV-specific CTL response to allow long-term viral suppression or viral clearance. In our approach, we sought to genetically manipulate human hematopoietic stem cells (HSCs) such that they differentiate into mature CTL that will kill HIV infected cells. To perform this, we molecularly cloned an HIV-specific T cell receptor (TCR) from CD8+ T cells that specifically targets an epitope of the HIV-1 Gag protein. This TCR was then used to genetically transduce HSCs. These HSCs were then introduced into a humanized mouse containing human fetal liver, fetal thymus, and hematopoietic progenitor cells, and were allowed to differentiate into mature human CD8+ CTL. We found human, HIV-specific CTL in multiple tissues in the mouse. Thus, genetic modification of human HSCs with a cloned TCR allows proper differentiation of the cells to occur in vivo, and these cells migrate to multiple anatomic sites, mimicking what is seen in humans. To determine if the presence of the transgenic, HIV-specific TCR has an effect on suppressing HIV replication, we infected with HIV-1 mice expressing the transgenic HIV-specific TCR and, separately, mice expressing a non-specific control TCR. We observed significant suppression of HIV replication in multiple organs in the mice expressing the HIV-specific TCR as compared to control, indicating that the presence of genetically modified HIV-specific CTL can form a functional antiviral response in vivo. These results strongly suggest that stem cell based gene therapy may be a feasible approach in the treatment of chronic viral infections and provide a foundation towards the development of this type of strategy. There is a desperate need for the development of new therapeutic strategies to eradicate HIV infection. HIV actively subverts the potent natural immune responses against it, particularly cellular cytotoxic T lymphocyte (CTL) responses. The development of a therapy that allows long-lived immune self-containment of HIV and restoration of these CTL responses by the host would be ideal. Through genetic manipulation of human blood-forming stem cells, we introduced a molecule– an HIV-targeting T cell receptor (TCR)–that allowed the generation of functional HIV-specific CTLs following differentiation within human tissues in a humanized mouse model. To assess if these newly developed, HIV-specific CTLs can allow active suppression of HIV replication, we infected these mice with HIV. We found that the development of genetically modified, HIV-specific CTLs in these mice results in the presence of a functional antiviral CTL response in vivo that significantly lowers viral replication following HIV infection. These results have strong implications for the use of this technology to engineer the human immune response to combat viral infections and suggest that genetic engineering via HSCs may allow tailoring of the immune response to target and eradicate HIV.
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Affiliation(s)
- Scott G Kitchen
- Division of Hematology-Oncology, The David Geffen School of Medicine at UCLA, Los Angeles, California, United States of America.
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Marsden MD, Krogstad PA, Zack JA. Virologic evidence supporting the use of raltegravir in HIV post-exposure prophylaxis regimens. Antivir Ther 2012; 17:1375-9. [DOI: 10.3851/imp2255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2012] [Indexed: 10/28/2022]
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Karumbayaram S, Lee P, Azghadi SF, Cooper AR, Patterson M, Kohn DB, Pyle A, Clark A, Byrne J, Zack JA, Plath K, Lowry WE. From skin biopsy to neurons through a pluripotent intermediate under Good Manufacturing Practice protocols. Stem Cells Transl Med 2011. [PMID: 23197638 DOI: 10.5966/sctm.2011-0001] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The clinical application of human-induced pluripotent stem cells (hiPSCs) requires not only the production of Good Manufacturing Practice-grade (GMP-grade) hiPSCs but also the derivation of specified cell types for transplantation under GMP conditions. Previous reports have suggested that hiPSCs can be produced in the absence of animal-derived reagents (xenobiotics) to ease the transition to production under GMP standards. However, to facilitate the use of hiPSCs in cell-based therapeutics, their progeny should be produced not only in the absence of xenobiotics but also under GMP conditions requiring extensive standardization of protocols, documentation, and reproducibility of methods and product. Here, we present a successful framework to produce GMP-grade derivatives of hiPSCs that are free of xenobiotic exposure from the collection of patient fibroblasts, through reprogramming, maintenance of hiPSCs, identification of reprogramming vector integration sites (nrLAM-PCR), and finally specification and terminal differentiation of clinically relevant cells. Furthermore, we developed a primary set of Standard Operating Procedures for the GMP-grade derivation and differentiation of these cells as a resource to facilitate widespread adoption of these practices.
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Marban C, Su T, Ferrari R, Li B, Vatakis D, Pellegrini M, Zack JA, Rohr O, Kurdistani SK. Genome-wide binding map of the HIV-1 Tat protein to the human genome. PLoS One 2011; 6:e26894. [PMID: 22073215 PMCID: PMC3208564 DOI: 10.1371/journal.pone.0026894] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Accepted: 09/22/2011] [Indexed: 01/14/2023] Open
Abstract
The HIV-1 Trans-Activator of Transcription (Tat) protein binds to multiple host cellular factors and greatly enhances the level of transcription of the HIV genome. While Tat's control of viral transcription is well-studied, much less is known about the interaction of Tat with the human genome. Here, we report the genome-wide binding map of Tat to the human genome in Jurkat T cells using chromatin immunoprecipitation combined with next-generation sequencing. Surprisingly, we found that ~53% of the Tat target regions are within DNA repeat elements, greater than half of which are Alu sequences. The remaining target regions are located in introns and distal intergenic regions; only ~7% of Tat-bound regions are near transcription start sites (TSS) at gene promoters. Interestingly, Tat binds to promoters of genes that, in Jurkat cells, are bound by the ETS1 transcription factor, the CBP histone acetyltransferase and/or are enriched for histone H3 lysine 4 tri-methylation (H3K4me3) and H3K27me3. Tat binding is associated with genes enriched with functions in T cell biology and immune response. Our data reveal that Tat's interaction with the host genome is more extensive than previously thought, with potentially important implications for the viral life cycle.
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Affiliation(s)
- Céline Marban
- Institut de Virologie, Université de Strasbourg, Strasbourg, France
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Trent Su
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- Division of Oral Biology and Medicine, School of Dentistry, University of California Los Angeles, Los Angeles, California, United States of America
| | - Roberto Ferrari
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Bing Li
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Dimitrios Vatakis
- Division of Hematology and Oncology, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Matteo Pellegrini
- Department of Molecular, Cellular, and Developmental Biology, University of California Los Angeles, Los Angeles, California, United States of America
- Eli and Edythe Broad Centre of Regenerative Medicine and Stem Cell Research, University of California Los Angeles, Los Angeles, California, United States of America
| | - Jerome A. Zack
- Division of Hematology and Oncology, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- Eli and Edythe Broad Centre of Regenerative Medicine and Stem Cell Research, University of California Los Angeles, Los Angeles, California, United States of America
| | - Olivier Rohr
- Institut de Virologie, Université de Strasbourg, Strasbourg, France
- Institut Universitaire de France (IUF), Paris, France
- * E-mail: (SKK); (OR)
| | - Siavash K. Kurdistani
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- Eli and Edythe Broad Centre of Regenerative Medicine and Stem Cell Research, University of California Los Angeles, Los Angeles, California, United States of America
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail: (SKK); (OR)
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Marsden MD, Burke BP, Zack JA. HIV latency is influenced by regions of the viral genome outside of the long terminal repeats and regulatory genes. Virology 2011; 417:394-9. [PMID: 21777932 DOI: 10.1016/j.virol.2011.06.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 06/23/2011] [Accepted: 06/24/2011] [Indexed: 01/10/2023]
Abstract
We have previously described an in vitro primary thymocyte model for HIV latency that recapitulates several important aspects of latently infected cells obtained from patients. Our original model included a truncated HIV genome expressing only Tat, Rev, and Vpu along with a reporter gene. We have now expanded these studies to include reporter viruses encoding more complete viral genomes. We show here that regions of the viral genome outside of the long terminal repeat promoter and Tat/Rev regulatory genes can substantially affect both the basal level of HIV transcription prior to stimulation, and also the level of viral expression following costimulation via CD3 and CD28 ligation. These differences in latency phenotype between truncated and more complete HIV genomes demonstrate the importance of accessory genes in the context of HIV latency and indicate that care should be taken when interpreting data derived from heavily modified HIV genomes in latency models.
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Affiliation(s)
- Matthew D Marsden
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine at UCLA, 615 Charles E Young Drive South, BSRB 173, Los Angeles, CA 90095 USA.
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Abstract
The ability of HIV to infect quiescent CD4+ T cells has been a topic of intense debate. While early studies suggested that the virus could not infect this particular T cell subset, subsequent studies using more sensitive protocols demonstrated that these cells could inefficiently support HIV infection. Additional studies showed that the kinetics of infection in quiescent cells was delayed and multiple stages of the viral life cycle were marred by inefficiencies. Despite that, proviral DNA has been found in these cells presenting them as a potential viral reservoir. Therefore, a better understanding of the relationship between HIV and quiescent T cells may lead to further advances in the field of HIV.
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Affiliation(s)
- Dimitrios N Vatakis
- Department of Medicine, Division of Hematology/Oncology, UCLA AIDS Institute, David Geffen School of Medicine at UCLA, 615 Charles E. Young Drive South, Los Angeles, CA 90095, USA.
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Mitsuyasu RT, Zack JA, Macpherson JL, Symonds GP. Phase I/II Clinical Trials Using Gene-Modified Adult Hematopoietic Stem Cells for HIV: Lessons Learnt. Stem Cells Int 2011; 2011:393698. [PMID: 21716651 PMCID: PMC3116533 DOI: 10.4061/2011/393698] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Accepted: 03/15/2011] [Indexed: 12/20/2022] Open
Abstract
Gene therapy for individuals infected with HIV has the potential to provide a once-only treatment that will act to reduce viral load, preserve the immune system, and mitigate cumulative toxicities associated with highly active antiretroviral therapy (HAART). The authors have been involved in two clinical trials (phase I and phase II) using gene-modified adult hematopoietic stem cells (HSCs), and these are discussed as prototypic trials within the general field of HSC gene therapy trials for HIV. Taken as a group these trials have shown (i) the safety of both the procedure and the anti-HIV agents themselves and (ii) the feasibility of the approach. They point to the requirement for (i) the ability to transduce and infuse as many as possible gene-containing HSC and/or (ii) high engraftment and in vivo expansion of these cells, (iii) potentially increased efficacy of the anti-HIV agent(s) and (iv) automation of the cell processing procedure.
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Affiliation(s)
- Ronald T Mitsuyasu
- Center for Clinical AIDS Research and Education (CARE Center), University of California-Los Angeles, Los Angeles, CA 90035, USA
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Tchieu J, Kuoy E, Chin MH, Trinh H, Patterson M, Sherman SP, Aimiuwu O, Lindgren A, Hakimian S, Zack JA, Clark AT, Pyle AD, Lowry WE, Plath K. Female human iPSCs retain an inactive X chromosome. Cell Stem Cell 2010; 7:329-42. [PMID: 20727844 DOI: 10.1016/j.stem.2010.06.024] [Citation(s) in RCA: 228] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2010] [Revised: 05/27/2010] [Accepted: 06/17/2010] [Indexed: 11/16/2022]
Abstract
Generating induced pluripotent stem cells (iPSCs) requires massive epigenome reorganization. It is unclear whether reprogramming of female human cells reactivates the inactive X chromosome (Xi), as in mouse. Here we establish that human (h)iPSCs derived from several female fibroblasts under standard culture conditions carry an Xi. Despite the lack of reactivation, the Xi undergoes defined chromatin changes, and expansion of hiPSCs can lead to partial loss of XIST RNA. These results indicate that hiPSCs are epigenetically dynamic and do not display a pristine state of X inactivation with two active Xs as found in some female human embryonic stem cell lines. Furthermore, whereas fibroblasts are mosaic for the Xi, hiPSCs are clonal. This nonrandom pattern of X chromosome inactivation in female hiPSCs, which is maintained upon differentiation, has critical implications for clinical applications and disease modeling, and could be exploited for a unique form of gene therapy for X-linked diseases.
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Affiliation(s)
- Jason Tchieu
- Department of Biological Chemistry, Jonsson Comprehensive Cancer Center, Molecular Biology Institute, David Geffen School of Medicine, and Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California Los Angeles, Los Angeles, CA 90024, USA
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Epeldegui M, Thapa DR, De La Cruz J, Kitchen S, Zack JA, Martínez-Maza O. CD40 ligand (CD154) incorporated into HIV virions induces activation-induced cytidine deaminase (AID) expression in human B lymphocytes. PLoS One 2010; 5:e11448. [PMID: 20625427 PMCID: PMC2897846 DOI: 10.1371/journal.pone.0011448] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Accepted: 06/09/2010] [Indexed: 11/18/2022] Open
Abstract
Most AIDS-associated non-Hodgkin's lymphoma (AIDS-NHL) arises from errors in immunoglobulin heavy-chain gene (IgH) class switch recombination (CSR) or somatic hypermutation (SHM), events that occur in germinal center (GC) B cells and require the activity of activation induced cytidine deaminase (AID). Several oncogenic viruses (EBV, HCV, HPV) can induce AID gene (AID) expression, and elevated AID expression is seen in circulating lymphocytes prior to AIDS-NHL diagnosis. Here, we report that HIV produced in peripheral blood mononuclear cells (PBMC) induced AID expression in normal human B cells. Since HIV produced in PBMC contains host cell CD40 ligand (CD40L) incorporated into the viral membrane, and CD40L is known to induce AID expression in human B cells, the role of virion-associated CD40L in HIV-induced AID expression was examined. Only viruses expressing functional CD40L were seen to induce AID expression; CD40L-negative HIV did not induce AID expression. The induction of AID expression by CD40L+ HIV was abrogated by addition of blocking anti-CD40L antibody. AID protein was detected in B cells exposed to CD40L+ HIV using intracellular multicolor flow cytometry, with most AID producing B cells expressing the CD71 activation marker on their surface. Therefore, HIV virions that express CD40L induce AID expression in B cells, and this induction appears to be due to a direct interaction between CD40L on these viruses and CD40 on B cells. These findings are consistent with a role for HIV in the direct stimulation of B cells, potentially leading to the accumulation of molecular lesions that have the potential to contribute to the development of NHL.
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Affiliation(s)
- Marta Epeldegui
- Departments of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America
| | - Dharma R. Thapa
- Departments of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America
| | - Justin De La Cruz
- Departments of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America
| | - Scott Kitchen
- Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America
- University of California Los Angeles AIDS Institute, Los Angeles, California, United States of America
| | - Jerome A. Zack
- Departments of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America
- Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America
- University of California Los Angeles AIDS Institute, Los Angeles, California, United States of America
- Jonson Comprehensive Cancer Center, Los Angeles, California, United States of America
| | - Otoniel Martínez-Maza
- Departments of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America
- University of California Los Angeles AIDS Institute, Los Angeles, California, United States of America
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, United States of America
- Jonson Comprehensive Cancer Center, Los Angeles, California, United States of America
- Department of Epidemiology, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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Brown HJ, Peng L, Harada JN, Walker JR, Cole S, Lin SF, Zack JA, Chanda SK, Sun R. Gene expression and transcription factor profiling reveal inhibition of transcription factor cAMP-response element-binding protein by gamma-herpesvirus replication and transcription activator. J Biol Chem 2010; 285:25139-53. [PMID: 20516076 DOI: 10.1074/jbc.m110.137737] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Herpesvirus replication involves the expression of over 80 viral genes in a well ordered sequence, leading to the production of new virions. Viral genes expressed during the earliest phases of replication often regulate both viral and cellular genes. Therefore, they have the potential to bring about dramatic functional changes within the cell. Replication and transcription activator (RTA) is a potent immediate early transcription activator of the gamma-herpesvirus family. This family includes Epstein-Barr virus and Kaposi sarcoma-associated herpesvirus, human pathogens associated with malignancy. Here we combine gene array technology with transcription factor profiling to identify the earliest DNA promoter and cellular transcription factor targets of RTA in the cellular genome. We find that expression of RTA leads to both activation and inhibition of distinct groups of cellular genes. The identity of the target genes suggests that RTA rapidly changes the cellular environment to counteract cell death pathways, support growth factor signaling, and also promote immune evasion of the infected cell. Transcription factor profiling of the target gene promoters highlighted distinct pathways involved in gene activation at specific time points. Most notable throughout was the high level of cAMP-response element-binding protein (CREB)-response elements in RTA target genes. We find that RTA can function as either an activator or an inhibitor of CREB-response genes, depending on the promoter context. The association with CREB also highlights a novel connection and coordination between viral and cellular "immediate early" responses.
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Affiliation(s)
- Helen J Brown
- Department of Microbiology, Division of Hematology-Oncology, David Geffen School of Medicine, UCLA, Los Angeles, California 90095, USA.
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Shimizu S, Hong P, Arumugam B, Pokomo L, Boyer J, Koizumi N, Kittipongdaja P, Chen A, Bristol G, Galic Z, Zack JA, Yang O, Chen ISY, Lee B, An DS. A highly efficient short hairpin RNA potently down-regulates CCR5 expression in systemic lymphoid organs in the hu-BLT mouse model. Blood 2010; 115:1534-44. [PMID: 20018916 PMCID: PMC2830759 DOI: 10.1182/blood-2009-04-215855] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Accepted: 11/15/2009] [Indexed: 11/20/2022] Open
Abstract
Inhibiting the expression of the HIV-1 coreceptor CCR5 holds great promise for controlling HIV-1 infection in patients. Here we report stable knockdown of human CCR5 by a short hairpin RNA (shRNA) in a humanized bone marrow/liver/thymus (BLT) mouse model. We delivered a potent shRNA against CCR5 into human fetal liver-derived CD34(+) hematopoietic progenitor/stem cells (HPSCs) by lentiviral vector transduction. We transplanted vector-transduced HPSCs solidified with Matrigel and a thymus segment under the mouse kidney capsule. Vector-transduced autologous CD34(+) cells were subsequently injected in the irradiated mouse, intended to create systemic reconstitution. CCR5 expression was down-regulated in human T cells and monocytes/macrophages in systemic lymphoid tissues, including gut-associated lymphoid tissue, the major site of HIV-1 replication. The shRNA-mediated CCR5 knockdown had no apparent adverse effects on T-cell development as assessed by polyclonal T-cell receptor Vbeta family development and naive/memory T-cell differentiation. CCR5 knockdown in the secondary transplanted mice suggested the potential of long-term hematopoietic reconstitution by the shRNA-transduced HPSCs. CCR5 tropic HIV-1 infection was effectively inhibited in mouse-derived human splenocytes ex vivo. These results demonstrate that lentiviral vector delivery of shRNA into human HPSCs could stably down-regulate CCR5 in systemic lymphoid organs in vivo.
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Affiliation(s)
- Saki Shimizu
- Department of Medicine, Division of Hematology-Oncology, UCLA AIDS Institute, David Geffen School of Medicine, University of California-Los Angeles, 615 Charles E. Young Drive South, Los Angeles, CA 90095, USA
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