1
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Li Y, Seet CS, Mack R, Joshi K, Runde AP, Hagen PA, Barton K, Breslin P, Kini A, Ji HL, Zhang J. Distinct roles of hematopoietic cytokines in the regulation of leukemia stem cells in murine MLL-AF9 leukemia. Stem Cell Reports 2024; 19:100-111. [PMID: 38101400 PMCID: PMC10828676 DOI: 10.1016/j.stemcr.2023.11.003] [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: 08/10/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/17/2023] Open
Abstract
Lymphoid-primed multipotent progenitor (LMPP)-like and granulocyte-monocyte progenitor (GMP)-like leukemia stem cells (LSCs) co-exist in the blood of most patients with acute myeloid leukemia (AML). Complete elimination of both types of LSCs is required to cure AML. Using an MLL-AF9-induced murine AML model, we studied the role of hematopoietic cytokines in the survival of LMPP- and GMP-like LSCs. We found that SCF or FLT3L promotes the survival of LMPP-like LSCs by stimulating Stat5-mediated Mcl1 expression, whereas interleukin-3 (IL-3) or IL-6 induces the survival of GMP-like LSCs by stimulating Stat3/nuclear factor κB (NF-κB)-mediated Bcl2 expression. Functional study demonstrated that, compared to AML cells cultured in IL-3 and IL-6 medium, AML cells in SCF- or Flt3L-only culture are highly clonogenic in in vitro culture and are highly leukemogenic in vivo. Our study suggests that co-inhibition of both STAT5-MCL1 and STAT3/NF-κB-BCL2 signaling might represent an improved treatment strategy against AML, specifically AML cases with a monocytic phenotype and/or FLT3 mutations.
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Affiliation(s)
- Yanchun Li
- Blood Disease Laboratory, Xi'an International Medical Center Hospital, Xi'an, Shaanxi 710126, P.R. China
| | - Christopher S Seet
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Medical Center, Maywood, IL 60153, USA; Department of Medicine, Loyola University Medical Center, Maywood, IL 60153, USA
| | - Ryan Mack
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Medical Center, Maywood, IL 60153, USA; Departments of Cancer Biology and Department of Radiation Oncology, Loyola University Medical Center, Maywood, IL 60153, USA
| | - Kanak Joshi
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Medical Center, Maywood, IL 60153, USA; Departments of Cancer Biology and Department of Radiation Oncology, Loyola University Medical Center, Maywood, IL 60153, USA
| | - Austin P Runde
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Medical Center, Maywood, IL 60153, USA; Departments of Cancer Biology and Department of Radiation Oncology, Loyola University Medical Center, Maywood, IL 60153, USA
| | - Patrick A Hagen
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Medical Center, Maywood, IL 60153, USA; Department of Medicine, Loyola University Medical Center, Maywood, IL 60153, USA
| | - Kevin Barton
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Medical Center, Maywood, IL 60153, USA; Department of Medicine, Loyola University Medical Center, Maywood, IL 60153, USA
| | - Peter Breslin
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Medical Center, Maywood, IL 60153, USA; Departments of Biology, Molecular/Cellular Physiology, and Cancer Biology, Loyola University Medical Center, Maywood, IL 60153, USA
| | - Ameet Kini
- Department of Pathology, Loyola University Medical Center, Maywood, IL 60153, USA
| | - Hong-Long Ji
- Department of Surgery, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA; Burn and Shock Trauma Research Institute, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
| | - Jiwang Zhang
- Oncology Institute, Cardinal Bernardin Cancer Canter, Loyola University Medical Center, Maywood, IL 60153, USA; Departments of Cancer Biology and Department of Radiation Oncology, Loyola University Medical Center, Maywood, IL 60153, USA; Department of Pathology, Loyola University Medical Center, Maywood, IL 60153, USA.
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2
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Chang PC, Yuan X, Zampieri A, Towns C, Yoo SP, Engstrom C, Tsai S, Robles CR, Zhu Y, Lopez S, Montel-Hagen A, Seet CS, Crooks GM. Generation of antigen-specific mature T cells from RAG1 -/-RAG2 -/-B2M -/- stem cells by engineering their microenvironment. Nat Biomed Eng 2023:10.1038/s41551-023-01146-7. [PMID: 38062131 DOI: 10.1038/s41551-023-01146-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/25/2023] [Indexed: 02/03/2024]
Abstract
Pluripotent stem cells (PSCs) are a promising source of allogeneic T cells for off-the-shelf immunotherapies. However, the process of differentiating genetically engineered PSCs to generate mature T cells requires that the same molecular elements that are crucial for the selection of these cells be removed to prevent alloreactivity. Here we show that antigen-restricted mature T cells can be generated in vitro from PSCs edited via CRISPR to lack endogenous T cell receptors (TCRs) and class I major histocompatibility complexes. Specifically, we used T cell precursors from RAG1-/-RAG2-/-B2M-/- human PSCs expressing a single TCR, and a murine stromal cell line providing the cognate human major histocompatibility complex molecule and other critical signals for T cell maturation. Possibly owing to the absence of TCR mispairing, the generated T cells showed substantially better tumour control in mice than T cells with an intact endogenous TCR. Introducing the T cell selection components into the stromal microenvironment of the PSCs overcomes inherent biological challenges associated with the development of T cell immunotherapies from allogeneic PSCs.
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Affiliation(s)
- Patrick C Chang
- Molecular Biology Interdepartmental Program, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Xuegang Yuan
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Alexandre Zampieri
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Chloe Towns
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Sang Pil Yoo
- Molecular Biology Interdepartmental Program, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Claire Engstrom
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Steven Tsai
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | | | - Yuhua Zhu
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Shawn Lopez
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Amelie Montel-Hagen
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Christopher S Seet
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
- Molecular Biology Institute, UCLA, Los Angeles, CA, USA
- Broad Stem Cell Research Center, UCLA, Los Angeles, CA, USA
- Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA, USA
| | - Gay M Crooks
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA.
- Molecular Biology Institute, UCLA, Los Angeles, CA, USA.
- Broad Stem Cell Research Center, UCLA, Los Angeles, CA, USA.
- Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA, USA.
- Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA.
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3
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Yang S, Multani A, Garrigues JM, Oh MS, Hemarajata P, Burleson T, Green NM, Oliai C, Gaynor PT, Beaird OE, Winston DJ, Seet CS, Schaenman JM. Transient SARS-CoV-2 RNA-Dependent RNA Polymerase Mutations after Remdesivir Treatment for Chronic COVID-19 in Two Transplant Recipients: Case Report and Intra-Host Viral Genomic Investigation. Microorganisms 2023; 11:2096. [PMID: 37630656 PMCID: PMC10460003 DOI: 10.3390/microorganisms11082096] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 06/29/2023] [Revised: 08/10/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
Remdesivir is the first FDA-approved drug for treating severe SARS-CoV-2 infection and targets RNA-dependent RNA polymerase (RdRp) that is required for viral replication. To monitor for the development of mutations that may result in remdesivir resistance during prolonged treatment, we sequenced SARS-CoV-2 specimens collected at different treatment time points in two transplant patients with severe COVID-19. In the first patient, an allogeneic hematopoietic stem cell transplant recipient, a transient RdRp catalytic subunit mutation (nsp12:A449V) was observed that has not previously been associated with remdesivir resistance. As no in vitro study had been conducted to elucidate the phenotypic effect of nsp12:A449V, its clinical significance is unclear. In the second patient, two other transient RdRp mutations were detected: one in the catalytic subunit (nsp12:V166A) and the other in an accessory subunit important for processivity (nsp7:D67N). This is the first case report for a potential link between the nsp12:V166A mutation and remdesivir resistance in vivo, which had only been previously described by in vitro studies. The nsp7:D67N mutation has not previously been associated with remdesivir resistance, and whether it has a phenotypic effect is unknown. Our study revealed SARS-CoV-2 genetic dynamics during remdesivir treatment in transplant recipients that involved mutations in the RdRp complex (nsp7 and nsp12), which may be the result of selective pressure. These results suggest that close monitoring for potential resistance during the course of remdesivir treatment in highly vulnerable patient populations may be beneficial. Development and utilization of diagnostic RdRp genotyping tests may be a future direction for improving the management of chronic COVID-19.
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Affiliation(s)
- Shangxin Yang
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
| | - Ashrit Multani
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA; (A.M.); (P.T.G.); (O.E.B.)
| | - Jacob M. Garrigues
- Public Health Laboratories, Los Angeles County Department of Public Health, Downey, CA 90242, USA (P.H.); (T.B.); (N.M.G.)
| | - Michael S. Oh
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA; (M.S.O.); (C.O.); (D.J.W.)
| | - Peera Hemarajata
- Public Health Laboratories, Los Angeles County Department of Public Health, Downey, CA 90242, USA (P.H.); (T.B.); (N.M.G.)
| | - Taylor Burleson
- Public Health Laboratories, Los Angeles County Department of Public Health, Downey, CA 90242, USA (P.H.); (T.B.); (N.M.G.)
| | - Nicole M. Green
- Public Health Laboratories, Los Angeles County Department of Public Health, Downey, CA 90242, USA (P.H.); (T.B.); (N.M.G.)
| | - Caspian Oliai
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA; (M.S.O.); (C.O.); (D.J.W.)
| | - Pryce T. Gaynor
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA; (A.M.); (P.T.G.); (O.E.B.)
| | - Omer E. Beaird
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA; (A.M.); (P.T.G.); (O.E.B.)
| | - Drew J. Winston
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA; (M.S.O.); (C.O.); (D.J.W.)
| | - Christopher S. Seet
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA; (M.S.O.); (C.O.); (D.J.W.)
| | - Joanna M. Schaenman
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA; (A.M.); (P.T.G.); (O.E.B.)
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4
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Pan Y, Phillips JW, Zhang BD, Noguchi M, Kutschera E, McLaughlin J, Nesterenko PA, Mao Z, Bangayan NJ, Wang R, Tran W, Yang HT, Wang Y, Xu Y, Obusan MB, Cheng D, Lee AH, Kadash-Edmondson KE, Champhekar A, Puig-Saus C, Ribas A, Prins RM, Seet CS, Crooks GM, Witte ON, Xing Y. IRIS: Discovery of cancer immunotherapy targets arising from pre-mRNA alternative splicing. Proc Natl Acad Sci U S A 2023; 120:e2221116120. [PMID: 37192158 PMCID: PMC10214192 DOI: 10.1073/pnas.2221116120] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 12/14/2022] [Accepted: 04/05/2023] [Indexed: 05/18/2023] Open
Abstract
Alternative splicing (AS) is prevalent in cancer, generating an extensive but largely unexplored repertoire of novel immunotherapy targets. We describe Isoform peptides from RNA splicing for Immunotherapy target Screening (IRIS), a computational platform capable of discovering AS-derived tumor antigens (TAs) for T cell receptor (TCR) and chimeric antigen receptor T cell (CAR-T) therapies. IRIS leverages large-scale tumor and normal transcriptome data and incorporates multiple screening approaches to discover AS-derived TAs with tumor-associated or tumor-specific expression. In a proof-of-concept analysis integrating transcriptomics and immunopeptidomics data, we showed that hundreds of IRIS-predicted TCR targets are presented by human leukocyte antigen (HLA) molecules. We applied IRIS to RNA-seq data of neuroendocrine prostate cancer (NEPC). From 2,939 NEPC-associated AS events, IRIS predicted 1,651 epitopes from 808 events as potential TCR targets for two common HLA types (A*02:01 and A*03:01). A more stringent screening test prioritized 48 epitopes from 20 events with "neoantigen-like" NEPC-specific expression. Predicted epitopes are often encoded by microexons of ≤30 nucleotides. To validate the immunogenicity and T cell recognition of IRIS-predicted TCR epitopes, we performed in vitro T cell priming in combination with single-cell TCR sequencing. Seven TCRs transduced into human peripheral blood mononuclear cells (PBMCs) showed high activity against individual IRIS-predicted epitopes, providing strong evidence of isolated TCRs reactive to AS-derived peptides. One selected TCR showed efficient cytotoxicity against target cells expressing the target peptide. Our study illustrates the contribution of AS to the TA repertoire of cancer cells and demonstrates the utility of IRIS for discovering AS-derived TAs and expanding cancer immunotherapies.
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Affiliation(s)
- Yang Pan
- Bioinformatics Interdepartmental Graduate Program, University of California, Los Angeles, CA90095
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
| | - John W. Phillips
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA90095
| | - Beatrice D. Zhang
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
| | - Miyako Noguchi
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA90095
| | - Eric Kutschera
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
| | - Jami McLaughlin
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA90095
| | | | - Zhiyuan Mao
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Nathanael J. Bangayan
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Robert Wang
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
- Graduate Group in Genomics and Computational Biology, University of Pennsylvania, Philadelphia, PA19104
| | - Wendy Tran
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA90095
| | - Harry T. Yang
- Bioinformatics Interdepartmental Graduate Program, University of California, Los Angeles, CA90095
| | - Yuanyuan Wang
- Bioinformatics Interdepartmental Graduate Program, University of California, Los Angeles, CA90095
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
| | - Yang Xu
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
- Graduate Group in Genomics and Computational Biology, University of Pennsylvania, Philadelphia, PA19104
| | - Matthew B. Obusan
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA90095
| | - Donghui Cheng
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA90095
| | - Alex H. Lee
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Kathryn E. Kadash-Edmondson
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
| | - Ameya Champhekar
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Cristina Puig-Saus
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA90095
- Parker Institute for Cancer Immunotherapy, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Antoni Ribas
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA90095
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA90095
- Parker Institute for Cancer Immunotherapy, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Robert M. Prins
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA90095
- Parker Institute for Cancer Immunotherapy, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Christopher S. Seet
- Molecular Biology Institute, University of California, Los Angeles, CA90095
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA90095
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA90095
| | - Gay M. Crooks
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA90095
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA90095
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Division of Pediatric Hematology-Oncology, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Owen N. Witte
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA90095
- Molecular Biology Institute, University of California, Los Angeles, CA90095
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, CA90095
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA90095
- Parker Institute for Cancer Immunotherapy, David Geffen School of Medicine, University of California, Los Angeles, CA90095
| | - Yi Xing
- Center for Computational and Genomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA90095
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- Department of Biomedical and Health Informatics, The Children’s Hospital of Philadelphia, Philadelphia, PA19104
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5
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McAuley GE, Yiu G, Chang PC, Newby GA, Campo-Fernandez B, Fitz-Gibbon ST, Wu X, Kang SHL, Garibay A, Butler J, Christian V, Wong RL, Everette KA, Azzun A, Gelfer H, Seet CS, Narendran A, Murguia-Favela L, Romero Z, Wright N, Liu DR, Crooks GM, Kohn DB. Human T cell generation is restored in CD3δ severe combined immunodeficiency through adenine base editing. Cell 2023; 186:1398-1416.e23. [PMID: 36944331 PMCID: PMC10876291 DOI: 10.1016/j.cell.2023.02.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [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: 12/06/2022] [Revised: 02/03/2023] [Accepted: 02/21/2023] [Indexed: 03/23/2023]
Abstract
CD3δ SCID is a devastating inborn error of immunity caused by mutations in CD3D, encoding the invariant CD3δ chain of the CD3/TCR complex necessary for normal thymopoiesis. We demonstrate an adenine base editing (ABE) strategy to restore CD3δ in autologous hematopoietic stem and progenitor cells (HSPCs). Delivery of mRNA encoding a laboratory-evolved ABE and guide RNA into a CD3δ SCID patient's HSPCs resulted in a 71.2% ± 7.85% (n = 3) correction of the pathogenic mutation. Edited HSPCs differentiated in artificial thymic organoids produced mature T cells exhibiting diverse TCR repertoires and TCR-dependent functions. Edited human HSPCs transplanted into immunodeficient mice showed 88% reversion of the CD3D defect in human CD34+ cells isolated from mouse bone marrow after 16 weeks, indicating correction of long-term repopulating HSCs. These findings demonstrate the preclinical efficacy of ABE in HSPCs for the treatment of CD3δ SCID, providing a foundation for the development of a one-time treatment for CD3δ SCID patients.
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Affiliation(s)
- Grace E McAuley
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Gloria Yiu
- Department of Medicine, Division of Rheumatology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Patrick C Chang
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Gregory A Newby
- Merkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA; Howard Hughes Medical Institute, Harvard University, Cambridge, MA 02138, USA
| | - Beatriz Campo-Fernandez
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Sorel T Fitz-Gibbon
- Department of Molecular, Cell & Developmental Biology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Xiaomeng Wu
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Sung-Hae L Kang
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Amber Garibay
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jeffrey Butler
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Valentina Christian
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Ryan L Wong
- Department of Molecular & Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kelcee A Everette
- Merkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA; Howard Hughes Medical Institute, Harvard University, Cambridge, MA 02138, USA
| | - Anthony Azzun
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Hila Gelfer
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Christopher S Seet
- Department of Medicine, Division of Hematology-Oncology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Broad Stem Cell Research Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Aru Narendran
- Department of Pediatrics, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Luis Murguia-Favela
- Department of Pediatrics, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Zulema Romero
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Nicola Wright
- Department of Pediatrics, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - David R Liu
- Merkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA; Howard Hughes Medical Institute, Harvard University, Cambridge, MA 02138, USA
| | - Gay M Crooks
- Department of Pathology & Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Broad Stem Cell Research Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA; Division of Pediatric Hematology-Oncology, 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; Department of Molecular & Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Division of Pediatric Hematology-Oncology, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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6
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Li S, Wang CS, Montel-Hagen A, Chen HC, Lopez S, Zhou O, Dai K, Tsai S, Satyadi W, Botero C, Wong C, Casero D, Crooks GM, Seet CS. Strength of CAR signaling determines T cell versus ILC differentiation from pluripotent stem cells. Cell Rep 2023; 42:112241. [PMID: 36906850 PMCID: PMC10315155 DOI: 10.1016/j.celrep.2023.112241] [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: 07/22/2022] [Revised: 01/04/2023] [Accepted: 02/23/2023] [Indexed: 03/13/2023] Open
Abstract
Generation of chimeric antigen receptor (CAR) T cells from pluripotent stem cells (PSCs) will enable advances in cancer immunotherapy. Understanding how CARs affect T cell differentiation from PSCs is important for this effort. The recently described artificial thymic organoid (ATO) system supports in vitro differentiation of PSCs to T cells. Unexpectedly, PSCs transduced with a CD19-targeted CAR resulted in diversion of T cell differentiation to the innate lymphoid cell 2 (ILC2) lineage in ATOs. T cells and ILC2s are closely related lymphoid lineages with shared developmental and transcriptional programs. Mechanistically, we show that antigen-independent CAR signaling during lymphoid development enriched for ILC2-primed precursors at the expense of T cell precursors. We applied this understanding to modulate CAR signaling strength through expression level, structure, and presentation of cognate antigen to demonstrate that the T cell-versus-ILC lineage decision can be rationally controlled in either direction, providing a framework for achieving CAR-T cell development from PSCs.
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Affiliation(s)
- Suwen Li
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Chloe S Wang
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Amélie Montel-Hagen
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Ho-Chung Chen
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Shawn Lopez
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Olivia Zhou
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kristy Dai
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Steven Tsai
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - William Satyadi
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Carlos Botero
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Claudia Wong
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - David Casero
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Gay M Crooks
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Broad Stem Cell Research Center (BSCRC), David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center (JCCC), 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
| | - Christopher S Seet
- Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine (DGSOM), University of California, Los Angeles, Los Angeles, CA 90095, USA; Broad Stem Cell Research Center (BSCRC), David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center (JCCC), 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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7
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Li S, Wang CS, Montel-Hagen A, Casero D, Lopez S, Chen HC, Zhou O, Botero C, Tsai SC, Wong C, Crooks GM, Seet CS. Strength of CAR signaling reveals bifurcation of T and ILC2 lineage differentiation from pluripotent stem cells. The Journal of Immunology 2022. [DOI: 10.4049/jimmunol.208.supp.107.11] [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: 01/04/2023]
Abstract
Abstract
T cells and type 2 innate lymphoid cells (ILC2) are two closely related lymphoid lineages that share certain developmental and transcriptional programs, including a requirement for Notch and IL-7 signaling during differentiation. We recently developed an artificial thymic organoid (ATO) system that supports in vitro differentiation of human pluripotent stem cells (PSCs) to mature αβT cells. We show here that lentiviral introduction of a CD19-targeted chimeric antigen receptor (CAR) into PSCs surprisingly resulted in ILC2-biased lymphopoiesis from PSCs at the expense of T cell differentiation. PSC-derived ILC2s expressed the classical ILC2 markers CD25, CD200R, and CRTH2 as well GATA3, ID2, and TCF7, and responded to both cytokine stimuli and antigen-dependent CAR signaling by producing IL-5 and IL-13. To understand CAR-mediated lineage diversion from T to ILC2, we performed single cell RNAseq of PSC-derived hematopoietic progenitor cells before the phenotypic onset of either T or ILC2 differentiation. This revealed a gene signature of T cell receptor signaling, suggesting aberrant CAR activation at the earliest stages of lymphocyte development. We established that CAR signaling in ATOs was antigen-independent and thus likely driven by tonic signaling. We applied this finding to rationally modulate the T/ILC2 lineage decision by fine-tuning CAR signaling strength during lymphocyte development from PSCs, permitting restoration of conventional CAR-T cell differentiation or, conversely, directed differentiation of isogenic antigen-specific CAR-ILC2s. Taken together, our findings shed light on human ILC2 development and inform the applied differentiation of both ILC2s and conventional CAR-T cells from PSCs.
Supported by Tobacco-Related Disease Research Program Predoctoral Award (SL), Broad Stem Cell Research Center UCLA Fellowship (SL, CSS), CIRM Bridges Program (CB), NIH T32 (ST), NIH K08CA235525 (CSS).
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Affiliation(s)
- Suwen Li
- 1Department of Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Chloe S Wang
- 2Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Amélie Montel-Hagen
- 3Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - David Casero
- 3Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Shawn Lopez
- 3Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Ho-Chung Chen
- 3Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Olivia Zhou
- 2Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | | | - Steven C Tsai
- 2Department of Medicine, Division of Hematology-Oncology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Claudia Wong
- 3Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Gay M Crooks
- 3Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- 5Broad Stem Cell Research Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- 6Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Christopher S Seet
- 5Broad Stem Cell Research Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- 6Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- 7David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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8
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Wang Z, McWilliams-Koeppen HP, Reza H, Ostberg JR, Chen W, Wang X, Huynh C, Vyas V, Chang WC, Starr R, Wagner JR, Aguilar B, Yang X, Wu X, Wang J, Chen W, Koelker-Wolfe E, Seet CS, Montel-Hagen A, Crooks GM, Forman SJ, Brown CE. 3D-organoid culture supports differentiation of human CAR + iPSCs into highly functional CAR T cells. Cell Stem Cell 2022; 29:651-653. [PMID: 35395190 DOI: 10.1016/j.stem.2022.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Montel-Hagen A, Tsai S, Seet CS, Crooks GM. Generation of Artificial Thymic Organoids from Human and Murine Hematopoietic Stem and Progenitor Cells. Curr Protoc 2022; 2:e403. [PMID: 35384408 DOI: 10.1002/cpz1.403] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The generation of T cells is a complex, carefully orchestrated process that occurs in the thymus. The ability to mimic T cell differentiation in vitro has opened up avenues to better understand different stages of thymopoiesis but has also enabled the in vitro production of mature T cells suitable for immunotherapy. Among existing protocols, the artificial thymic organoid (ATO) system has been shown to be the most efficient at producing mature conventional T cells. In this serum-free model, human or murine hematopoietic stem and progenitor cells (HSPCs) are combined with a murine stromal cell line expressing a Notch ligand in a 3D cell aggregate. In ATOs, although only simple medium changes are required throughout the cultures, HSPCs differentiate into T cells with kinetics and phenotypes similar to those of endogenous thymopoiesis. This article describes protocols for the generation of ATOs from human and murine HSPCs. © 2022 Wiley Periodicals LLC. Basic Protocol 1: Expansion and preparation of MS5-hDLL4 or MS5-mDLL4 cells Basic Protocol 2: Isolation of human hematopoietic stem and progenitor cells (HSPCs; CD34+ cells) Support Protocol 1: Transduction of human HSPCs (CD34+ cells) Basic Protocol 3: Production of thymic progenitors and mature T cells from human HSPCs in artificial thymic organoids (ATOs) Support Protocol 2: Phenotype analysis of human ATO cells by flow cytometry Basic Protocol 4: Isolation of murine HSPCs (Lin- Sca1+ cKit+; LSK) and hematopoietic stem cells (LSK CD150+ CD48-) Basic Protocol 5: Production of thymic progenitors and mature T cells from murine HSPCs in ATOs Support Protocol 3: Phenotype analysis of murine ATO cells by flow cytometry Alternate Protocol: Generation of ATOs from single HSPCs.
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Affiliation(s)
- Amélie Montel-Hagen
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, California
| | - Steven Tsai
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Christopher S Seet
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, California.,Broad Stem Cell Research Center, UCLA, Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Gay M Crooks
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, California.,Broad Stem Cell Research Center, UCLA, Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California.,Division of Pediatric Hematology-Oncology, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, California
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10
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Wang Z, McWilliams-Koeppen HP, Reza H, Ostberg JR, Chen W, Wang X, Huynh C, Vyas V, Chang WC, Starr R, Wagner JR, Aguilar B, Yang X, Wu X, Wang J, Chen W, Koelker-Wolfe E, Seet CS, Montel-Hagen A, Crooks GM, Forman SJ, Brown CE. 3D-organoid culture supports differentiation of human CAR+ iPSCs into highly functional CAR T cells. Cell Stem Cell 2022; 29:515-527.e8. [PMID: 35278370 PMCID: PMC9119152 DOI: 10.1016/j.stem.2022.02.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [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: 12/31/2020] [Revised: 09/10/2021] [Accepted: 02/14/2022] [Indexed: 12/13/2022]
Abstract
Unlimited generation of chimeric antigen receptor (CAR) T cells from human-induced pluripotent stem cells (iPSCs) is an attractive approach for "off-the-shelf" CAR T cell immunotherapy. Approaches to efficiently differentiate iPSCs into canonical αβ T cell lineages, while maintaining CAR expression and functionality, however, have been challenging. We report that iPSCs reprogramed from CD62L+ naive and memory T cells followed by CD19-CAR engineering and 3D-organoid system differentiation confers products with conventional CD8αβ-positive CAR T cell characteristics. Expanded iPSC CD19-CAR T cells showed comparable antigen-specific activation, degranulation, cytotoxicity, and cytokine secretion compared with conventional CD19-CAR T cells and maintained homogeneous expression of the TCR derived from the initial clone. iPSC CD19-CAR T cells also mediated potent antitumor activity in vivo, prolonging survival of mice with CD19+ human tumor xenografts. Our study establishes feasible methodologies to generate highly functional CAR T cells from iPSCs to support the development of "off-the-shelf" manufacturing strategies.
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Affiliation(s)
- Zhiqiang Wang
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA.
| | - Helen P McWilliams-Koeppen
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Hernan Reza
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Julie R Ostberg
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Wuyang Chen
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Xiuli Wang
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Christian Huynh
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Vibhuti Vyas
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Wen-Chung Chang
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Renate Starr
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Jamie R Wagner
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Brenda Aguilar
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Xin Yang
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Xiwei Wu
- Integrative Genomics Core, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Jinhui Wang
- Integrative Genomics Core, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Wei Chen
- Integrative Genomics Core, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Ellery Koelker-Wolfe
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Christopher S Seet
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Broad Stem Cell Research Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Amélie Montel-Hagen
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Gay M Crooks
- Broad Stem Cell Research Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Division of Pediatric Hematology-Oncology, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Stephen J Forman
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA
| | - Christine E Brown
- Department of Hematology & Hematopoietic Cell Transplantation, T Cell Therapeutics Research Laboratories, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA, USA.
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11
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Zeidan AM, DeAngelo DJ, Palmer J, Seet CS, Tallman MS, Wei X, Raymon H, Sriraman P, Kopytek S, Bewersdorf JP, Burgess MR, Hege K, Stock W. Phase 1 study of anti-CD47 monoclonal antibody CC-90002 in patients with relapsed/refractory acute myeloid leukemia and high-risk myelodysplastic syndromes. Ann Hematol 2022; 101:557-569. [PMID: 34981142 PMCID: PMC9414073 DOI: 10.1007/s00277-021-04734-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [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: 09/16/2021] [Accepted: 11/29/2021] [Indexed: 02/08/2023]
Abstract
CC-90002 is an anti-CD47 antibody that inhibits CD47-SIRPα interaction and enables macrophage-mediated killing of tumor cells in hematological cancer cell lines. In this first clinical, phase 1, dose-escalation and -expansion study (CC-90002-AML-001; NCT02641002), we evaluated CC-90002 in patients with relapsed/refractory acute myeloid leukemia (AML) or high-risk myelodysplastic syndromes (MDS). CC-90002 was administered in escalating doses of 0.1-4.0 mg/kg, using a modified 3 + 3 design. Primary endpoints included dose-limiting toxicities (DLTs), non-tolerated dose (NTD), maximum tolerated dose (MTD), and recommended phase 2 dose. Secondary endpoints included preliminary efficacy, pharmacokinetics, and presence/frequency of anti-drug antibodies (ADAs). Between March 2016 and July 2018, 28 patients were enrolled (24 with AML and 4 with MDS) at 6 sites across the USA. As of July 18, 2018, all patients had discontinued, mainly due to death or progressive disease. The most common treatment-emergent adverse events were diarrhea (46.4%), thrombocytopenia (39.3%), febrile neutropenia (35.7%), and aspartate aminotransferase increase (35.7%). Four patients experienced DLTs (1 patient had grade 4 disseminated intravascular coagulation and grade 5 cerebral hemorrhage, 1 had grade 3 purpura, 1 had grade 4 congestive cardiac failure and grade 5 acute respiratory failure, and another had grade 5 sepsis). The NTD and MTD were not reached. No objective responses occurred. CC-90002 serum exposure was dose-dependent. ADAs were present across all doses, and the proportion of ADA-positive patients in cycle 1 increased over time. Despite no unexpected safety findings, the CC-90002-AML-001 study was discontinued in dose escalation for lack of monotherapy activity and evidence of ADAs. However, as other anti-CD47 agents in clinical trials are showing promising early results for AML and MDS, understanding preclinical and clinical differences between individual agents in this class will be of high importance.
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Affiliation(s)
- Amer M Zeidan
- Department of Internal Medicine, Yale University and Yale Cancer Center, New Haven, CT, USA.
- Yale School of Medicine, Smilow Cancer Hospital Care Center at Yale New Haven, 35 Park Street, Ste NP-7, New Haven, CT, 06511, USA.
| | | | - Jeanne Palmer
- Division of Hematology/Oncology, Mayo Clinic, Phoenix, AZ, USA
| | - Christopher S Seet
- Division of Hematology-Oncology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Martin S Tallman
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Xin Wei
- Bristol Myers Squibb, Princeton, NJ, USA
| | | | | | | | - Jan Philipp Bewersdorf
- Department of Internal Medicine, Yale University and Yale Cancer Center, New Haven, CT, USA
| | | | | | - Wendy Stock
- University of Chicago Medicine, Chicago, IL, USA
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12
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Bahlis NJ, Siegel DS, Schiller GJ, Samaras C, Sebag M, Berdeja J, Ganguly S, Matous J, Song K, Seet CS, Acosta-Rivera M, Bar M, Quick D, Anz B, Fonseca G, Chung W, Lee K, Mouro J, Agarwal A, Reece D. Pomalidomide, dexamethasone, and daratumumab immediately after lenalidomide-based treatment in patients with multiple myeloma: updated efficacy, safety, and health-related quality of life results from the phase 2 MM-014 trial. Leuk Lymphoma 2022; 63:1407-1417. [PMID: 35133221 DOI: 10.1080/10428194.2022.2030477] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 10/19/2022]
Abstract
Patients with relapsed/refractory multiple myeloma (RRMM) need proven subsequent therapies after early-line lenalidomide treatment failure. The phase 2 MM-014 trial (NCT01946477) investigated pomalidomide, dexamethasone, and daratumumab after 1 to 2 prior treatment lines (62.5%, 1 prior line) in patients with RRMM and prior lenalidomide (75.0%, lenalidomide refractory). With a median follow-up of 28.4 months, overall response rate was 77.7% (52.7% achieved very good partial response or better) and median progression-free survival was 30.8 months. For patients with lenalidomide-refractory disease, these outcomes were 76.2%, 47.6%, and 23.7 months, respectively. No new safety signals were observed; 64.3% experienced grade 3/4 neutropenia. Health-related quality of life was preserved or trended toward improvement through 12 treatment cycles. Pomalidomide, dexamethasone, and daratumumab given immediately after early-line lenalidomide-based treatment continues to demonstrate safety and efficacy, supporting pomalidomide-dexamethasone as a foundation of combination therapy in RRMM and providing evidence that the immunomodulatory agent class delivers benefit after lenalidomide treatment failure.
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Affiliation(s)
| | - David S Siegel
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, USA
| | - Gary J Schiller
- David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | | | - Michael Sebag
- McGill University Health Centre, Montreal, QC, Canada
| | | | | | | | - Kevin Song
- Vancouver General Hospital, Vancouver, BC, Canada
| | - Christopher S Seet
- David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | | | | | - Donald Quick
- Joe Arrington Cancer Research and Treatment Center, Lubbock, TX, USA
| | | | | | | | - Kim Lee
- Bristol Myers Squibb, Princeton, NJ, USA
| | - Jorge Mouro
- Celgene International Sàrl, A Bristol-Myers Squibb Company, Boudry, Switzerland
| | | | - Donna Reece
- Princess Margaret Cancer Centre, Toronto, ON, Canada
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13
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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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14
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Li YR, Zhou Y, Kim YJ, Zhu Y, Ma F, Yu J, Wang YC, Chen X, Li Z, Zeng S, Wang X, Lee D, Ku J, Tsao T, Hardoy C, Huang J, Cheng D, Montel-Hagen A, Seet CS, Crooks GM, Larson SM, Sasine JP, Wang X, Pellegrini M, Ribas A, Kohn DB, Witte O, Wang P, Yang L. Development of allogeneic HSC-engineered iNKT cells for off-the-shelf cancer immunotherapy. Cell Rep Med 2021; 2:100449. [PMID: 34841295 PMCID: PMC8607011 DOI: 10.1016/j.xcrm.2021.100449] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [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: 01/28/2021] [Revised: 08/12/2021] [Accepted: 10/19/2021] [Indexed: 01/19/2023]
Abstract
Cell-based immunotherapy has become the new-generation cancer medicine, and "off-the-shelf" cell products that can be manufactured at large scale and distributed readily to treat patients are necessary. Invariant natural killer T (iNKT) cells are ideal cell carriers for developing allogeneic cell therapy because they are powerful immune cells targeting cancers without graft-versus-host disease (GvHD) risk. However, healthy donor blood contains extremely low numbers of endogenous iNKT cells. Here, by combining hematopoietic stem cell (HSC) gene engineering and in vitro differentiation, we generate human allogeneic HSC-engineered iNKT (AlloHSC-iNKT) cells at high yield and purity; these cells closely resemble endogenous iNKT cells, effectively target tumor cells using multiple mechanisms, and exhibit high safety and low immunogenicity. These cells can be further engineered with chimeric antigen receptor (CAR) to enhance tumor targeting or/and gene edited to ablate surface human leukocyte antigen (HLA) molecules and further reduce immunogenicity. Collectively, these preclinical studies demonstrate the feasibility and cancer therapy potential of AlloHSC-iNKT cell products and lay a foundation for their translational and clinical development.
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Affiliation(s)
- Yan-Ruide Li
- 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
| | - Yu Jeong Kim
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yanni Zhu
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Feiyang Ma
- Department of Molecular, Cell and Developmental Biology, College of Letters and Sciences, 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
| | - Yu-Chen Wang
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Xianhui Chen
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA 90089, USA
| | - Zhe Li
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Samuel Zeng
- 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
| | - Derek Lee
- 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
| | - Christian Hardoy
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jie Huang
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Donghui Cheng
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Amélie Montel-Hagen
- Department of Pathology and Laboratory Medicine, 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
- Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, 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
| | - Sarah M. Larson
- Department of Internal Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Joshua P. Sasine
- 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
- Division of Hematology/Oncology, Department of Pediatrics, David Geffen School of Medicine, 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
| | - Matteo Pellegrini
- Department of Molecular, Cell and Developmental Biology, College of Letters and Sciences, 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
| | - Antoni Ribas
- 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
- Department of Molecular and Medical Pharmacology, 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
- Division of Hematology/Oncology, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Owen 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
- Parker Institute for Cancer Immunotherapy, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Pin Wang
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA 90089, 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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15
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Montel-Hagen A, Sun V, Casero D, Tsai S, Zampieri A, Jackson N, Li S, Lopez S, Zhu Y, Chick B, He C, de Barros SC, Seet CS, Crooks GM. In Vitro Recapitulation of Murine Thymopoiesis from Single Hematopoietic Stem Cells. Cell Rep 2020; 33:108320. [PMID: 33113379 PMCID: PMC7727762 DOI: 10.1016/j.celrep.2020.108320] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 06/17/2020] [Revised: 09/01/2020] [Accepted: 10/06/2020] [Indexed: 12/16/2022] Open
Abstract
We report a serum-free, 3D murine artificial thymic organoid (M-ATO)
system that mimics normal murine thymopoiesis with the production of all T cell
stages, from early thymic progenitors to functional single-positive (CD8SP and
CD4SP) TCRαβ and TCRγδ cells. RNA sequencing aligns
M-ATO-derived populations with phenotypically identical primary thymocytes.
M-ATOs initiated with Rag1−/− marrow
produce the same differentiation block as seen in the endogenous thymus, and
Notch signaling patterns in M-ATOs mirror primary thymopoiesis. M-ATOs initiated
with defined hematopoietic stem cells (HSCs) and lymphoid progenitors from
marrow and thymus generate each of the downstream differentiation stages,
allowing the kinetics of T cell differentiation to be tracked. Remarkably,
single HSCs deposited into each M-ATO generate the complete trajectory of T cell
differentiation, producing diverse TCR repertoires across clones that largely
match endogenous thymus. M-ATOs represent a highly reproducible and efficient
experimental platform for the interrogation of clonal thymopoiesis from
HSCs. Montel-Hagen et al. develop a murine artificial thymic organoid (M-ATO)
system to reproduce thymopoiesis in vitro from bone marrow stem
and progenitor cells (HSPCs). This method efficiently recapitulates the
phenotypic and transcriptional features of normal murine T cell development even
when initiated with a single HSC.
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Affiliation(s)
- Amélie Montel-Hagen
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Victoria Sun
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA; Molecular Biology Interdepartmental Program, UCLA, Los Angeles, CA, USA
| | - David Casero
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Steven Tsai
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Alexandre Zampieri
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Nicholas Jackson
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Suwen Li
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA; Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, CA, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, CA, USA
| | - Shawn Lopez
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Yuhua Zhu
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Brent Chick
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Chongbin He
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Stéphanie C de Barros
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Christopher S Seet
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA, USA
| | - Gay M Crooks
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, CA, USA; Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA, USA; Division of Pediatric Hematology-Oncology, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA.
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16
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Wong GDH, Law WC, Tan FN, Gan WL, Ang CCI, Xu Z, Seet CS, Lew WS. Thermal behavior of spin-current generation in Pt xCu 1-x devices characterized through spin-torque ferromagnetic resonance. Sci Rep 2020; 10:9631. [PMID: 32541818 PMCID: PMC7295739 DOI: 10.1038/s41598-020-66762-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 01/06/2020] [Accepted: 05/07/2020] [Indexed: 11/30/2022] Open
Abstract
High temperature studies of spin Hall effect have often been neglected despite its profound significance in real-world devices. In this work, high temperature spin torque ferromagnetic resonance measurement was performed to evaluate the effects of temperature on the Gilbert damping and spin Hall efficiency of PtxCu1−x. When the temperature was varied from 300 K to 407 K, the Gilbert damping was relatively stable with a change of 4% at composition x = 66%. Alloying Pt and Cu improved the spin Hall efficiency of Pt75Cu25/Co/Ta by 29% to a value of 0.31 ± 0.03 at 407 K. However, the critical switching current density is dependent on the ratio between the Gilbert damping and spin Hall efficiency and the smallest value was observed when x = 47%. It was found that at this concentration, the spin transparency was at its highest at 0.85 ± 0.09 hence indicating the importance of interfacial transparency for energy efficient devices at elevated temperature.
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Affiliation(s)
- G D H Wong
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.,GLOBALFOUNDRIES Singapore Pte, Ltd., Singapore, 738406, Singapore
| | - W C Law
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.,GLOBALFOUNDRIES Singapore Pte, Ltd., Singapore, 738406, Singapore
| | - F N Tan
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.,GLOBALFOUNDRIES Singapore Pte, Ltd., Singapore, 738406, Singapore
| | - W L Gan
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - C C I Ang
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Z Xu
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - C S Seet
- GLOBALFOUNDRIES Singapore Pte, Ltd., Singapore, 738406, Singapore
| | - W S Lew
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
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17
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Siegel DS, Schiller GJ, Samaras C, Sebag M, Berdeja J, Ganguly S, Matous J, Song K, Seet CS, Talamo G, Acosta-Rivera M, Bar M, Quick D, Anz B, Fonseca G, Reece D, Pierceall WE, Chung W, Zafar F, Agarwal A, Bahlis NJ. Pomalidomide, dexamethasone, and daratumumab in relapsed refractory multiple myeloma after lenalidomide treatment. Leukemia 2020; 34:3286-3297. [PMID: 32376855 PMCID: PMC7685974 DOI: 10.1038/s41375-020-0813-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [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: 01/09/2020] [Revised: 03/06/2020] [Accepted: 03/20/2020] [Indexed: 12/16/2022]
Abstract
Patients with multiple myeloma who have relapsed after or become refractory to lenalidomide in early treatment lines represent a clinically important population in need of effective therapies. The safety and efficacy of pomalidomide, low-dose dexamethasone, and daratumumab was evaluated in lenalidomide-pretreated patients with relapsed or refractory multiple myeloma (RRMM) after one to two prior treatment lines in the phase 2 MM-014 study. Patients received pomalidomide 4 mg daily from days 1-21 and dexamethasone 40 mg weekly (28-day cycles). Daratumumab 16 mg/kg was administered per label. Primary endpoint was overall response rate (ORR); secondary endpoints included progression-free survival (PFS) and safety. Per protocol, all patients (N = 112) had received lenalidomide in their most recent prior regimen (75.0% lenalidomide refractory). ORR was 77.7% (76.2% in lenalidomide-refractory patients); median follow-up was 17.2 months. Median PFS was not reached (1-year PFS rate 75.1%). The most common hematologic grade 3/4 treatment-emergent adverse event was neutropenia (62.5%). Grade 3/4 infections were reported in 31.3% of patients, including 13.4% with grade 3/4 pneumonia. These results demonstrate the safety and efficacy of pomalidomide-based therapy as early as second line in patients with RRMM, even immediately after lenalidomide failure, indicating that switching from the immunomodulatory agent class is not necessary.
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Affiliation(s)
- David S Siegel
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, USA.
| | - Gary J Schiller
- David Geffen School of Medicine at University of California, Los Angeles, CA, USA
| | | | - Michael Sebag
- McGill University Health Centre, Montreal, QC, Canada
| | | | | | | | - Kevin Song
- Vancouver General Hospital, Vancouver, BC, Canada
| | - Christopher S Seet
- David Geffen School of Medicine at University of California, Los Angeles, CA, USA
| | | | | | | | - Donald Quick
- Joe Arrington Cancer Research and Treatment Center, Lubbock, TX, USA
| | | | | | - Donna Reece
- Princess Margaret Cancer Centre, Toronto, ON, Canada
| | | | | | | | | | - Nizar J Bahlis
- Arnie Charbonneau Cancer Research Institute, University of Calgary, Calgary, AB, Canada
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18
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Siegel DS, Schiller GJ, Song KW, Agajanian R, Stockerl-Goldstein K, Kaya H, Sebag M, Samaras C, Malek E, Talamo G, Seet CS, Mouro J, Pierceall WE, Zafar F, Chung W, Srinivasan S, Agarwal A, Bahlis NJ. Pomalidomide plus low-dose dexamethasone in relapsed refractory multiple myeloma after lenalidomide treatment failure. Br J Haematol 2019; 188:501-510. [PMID: 31588567 PMCID: PMC7027539 DOI: 10.1111/bjh.16213] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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: 05/16/2019] [Accepted: 07/17/2019] [Indexed: 01/17/2023]
Abstract
Patients with relapsed/refractory multiple myeloma (RRMM) for whom the benefits of lenalidomide have been exhausted in early treatment lines need effective therapies. In cohort A of the phase 2 MM‐014 trial, we examined the safety and efficacy of pomalidomide plus low‐dose dexamethasone immediately after lenalidomide‐based treatment failure in patients with RRMM and two prior lines of therapy. Pomalidomide 4 mg was given on days 1 to 21 of 28‐day cycles. Dexamethasone 40 mg (20 mg for patients aged >75 years) was given on days 1, 8, 15 and 22 of 28‐day cycles. The primary endpoint was overall response rate (ORR), and secondary endpoints included progression‐free survival (PFS), overall survival (OS) and safety. The intention‐to‐treat population comprised 56 patients; all received prior lenalidomide (87·5% lenalidomide refractory) and 39 (69·6%) received prior bortezomib. ORR was 32·1% (28·2% in the prior‐bortezomib subgroup). Median PFS was 12·2 months (7·9 months in the prior‐bortezomib subgroup). Median OS was 41·7 months (38·6 months in the prior‐bortezomib subgroup). The most common grade 3/4 treatment‐emergent adverse events were anaemia (25·0%), pneumonia (14·3%) and fatigue (14·3%). These findings support earlier sequencing of pomalidomide‐based therapy in lenalidomide‐pretreated patients with RRMM, including those who have become refractory to lenalidomide. Trial registration: http://www.ClinicalTrials.gov identifier NCT01946477.
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Affiliation(s)
- David S Siegel
- John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, USA
| | - Gary J Schiller
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Kevin W Song
- Vancouver General Hospital, Vancouver, BC, Canada
| | - Richy Agajanian
- The Oncology Institute of Hope and Innovation, Downey, CA, USA
| | | | | | - Michael Sebag
- McGill University Health Centre, Montreal, QC, Canada
| | | | - Ehsan Malek
- University Hospitals Case Medical Center, Cleveland, OH, USA
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19
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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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20
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Puig-Saus C, Parisi G, Garcia-Diaz A, Krystofinski PE, Sandoval S, Zhang R, Champhekar AS, McCabe J, Cheung-Lau GC, Truong NA, Vega-Crespo A, Komenan MDS, Pang J, Macabali MH, Saco JD, Goodwin JL, Bolon B, Seet CS, Montel-Hagen A, Crooks GM, Hollis RP, Campo-Fernandez B, Bischof D, Cornetta K, Gschweng EH, Adelson C, Nguyen A, Yang L, Witte ON, Baltimore D, Comin-Anduix B, Kohn DB, Wang X, Cabrera P, Kaplan-Lefko PJ, Berent-Maoz B, Ribas A. IND-Enabling Studies for a Clinical Trial to Genetically Program a Persistent Cancer-Targeted Immune System. Clin Cancer Res 2018; 25:1000-1011. [PMID: 30409823 DOI: 10.1158/1078-0432.ccr-18-0963] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/21/2018] [Accepted: 11/05/2018] [Indexed: 11/16/2022]
Abstract
PURPOSE To improve persistence of adoptively transferred T-cell receptor (TCR)-engineered T cells and durable clinical responses, we designed a clinical trial to transplant genetically-modified hematopoietic stem cells (HSCs) together with adoptive cell transfer of T cells both engineered to express an NY-ESO-1 TCR. Here, we report the preclinical studies performed to enable an investigational new drug (IND) application. EXPERIMENTAL DESIGN HSCs transduced with a lentiviral vector expressing NY-ESO-1 TCR and the PET reporter/suicide gene HSV1-sr39TK and T cells transduced with a retroviral vector expressing NY-ESO-1 TCR were coadministered to myelodepleted HLA-A2/Kb mice within a formal Good Laboratory Practice (GLP)-compliant study to demonstrate safety, persistence, and HSC differentiation into all blood lineages. Non-GLP experiments included assessment of transgene immunogenicity and in vitro viral insertion safety studies. Furthermore, Good Manufacturing Practice (GMP)-compliant cell production qualification runs were performed to establish the manufacturing protocols for clinical use. RESULTS TCR genetically modified and ex vivo-cultured HSCs differentiated into all blood subsets in vivo after HSC transplantation, and coadministration of TCR-transduced T cells did not result in increased toxicity. The expression of NY-ESO-1 TCR and sr39TK transgenes did not have a detrimental effect on gene-modified HSC's differentiation to all blood cell lineages. There was no evidence of genotoxicity induced by the lentiviral vector. GMP batches of clinical-grade transgenic cells produced during qualification runs had adequate stability and functionality. CONCLUSIONS Coadministration of HSCs and T cells expressing an NY-ESO-1 TCR is safe in preclinical models. The results presented in this article led to the FDA approval of IND 17471.
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Affiliation(s)
- Cristina Puig-Saus
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California. .,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Giulia Parisi
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Angel Garcia-Diaz
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Paige E Krystofinski
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Salemiz Sandoval
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Ruixue Zhang
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Ameya S Champhekar
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - James McCabe
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Gardenia C Cheung-Lau
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Nhat A Truong
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Agustin Vega-Crespo
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Marie Desiles S Komenan
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Jia Pang
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Mignonette H Macabali
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Justin D Saco
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Jeffrey L Goodwin
- Division of Laboratory Animal Medicine (DLAM), Department of Medicine, DGSOM, UCLA, Los Angeles, California
| | | | - Christopher S Seet
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California
| | - Amelie Montel-Hagen
- Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California
| | - Gay M Crooks
- Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California.,Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California.,Division of Pediatric Hematology-Oncology, Department of Pediatrics, DGSOM, UCLA, Los Angeles, California.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California
| | - Roger P Hollis
- Department of Microbiology, Immunology and Molecular Genetics, UCLA, Los Angeles, California
| | - Beatriz Campo-Fernandez
- Department of Microbiology, Immunology and Molecular Genetics, UCLA, Los Angeles, California
| | - Daniela Bischof
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indiana University Vector Production Facility, Indianapolis, Indiana
| | - Kenneth Cornetta
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indiana University Vector Production Facility, Indianapolis, Indiana
| | - Eric H Gschweng
- Department of Microbiology, Immunology and Molecular Genetics, UCLA, Los Angeles, California
| | - Celia Adelson
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California
| | - Alexander Nguyen
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Lili Yang
- Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California.,Department of Microbiology, Immunology and Molecular Genetics, UCLA, Los Angeles, California
| | - Owen N Witte
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California.,Department of Microbiology, Immunology and Molecular Genetics, UCLA, Los Angeles, California.,Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, California
| | - David Baltimore
- Department of Biology and Biological Engineering, California Institute of Technology, Pasadena, California
| | - Begonya Comin-Anduix
- Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California.,Division of Surgical Oncology, Department of Surgery, UCLA, Los Angeles, California
| | - Donald B Kohn
- Department of Microbiology, Immunology and Molecular Genetics, UCLA, Los Angeles, California.,Department of Pediatrics, UCLA Children's Discovery and Innovation Institute, DGSOM, University of California, Los Angeles, California
| | - Xiaoyan Wang
- Statistics Core, Department of Medicine, UCLA, Los Angeles, California
| | - Paula Cabrera
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Paula J Kaplan-Lefko
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Beata Berent-Maoz
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Antoni Ribas
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California, Los Angeles (UCLA), Los Angeles, California. .,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California.,Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, California.,Division of Surgical Oncology, Department of Surgery, UCLA, Los Angeles, California
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21
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Seet CS, He C, Bethune MT, Li S, Chick B, Gschweng EH, Zhu Y, Kim K, Kohn DB, Baltimore D, Crooks GM, Montel-Hagen A. Generation of mature T cells from human hematopoietic stem and progenitor cells in artificial thymic organoids. Nat Methods 2017; 14:521-530. [PMID: 28369043 PMCID: PMC5426913 DOI: 10.1038/nmeth.4237] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [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: 12/02/2016] [Accepted: 03/03/2017] [Indexed: 01/08/2023]
Abstract
Studies of human T cell development require robust model systems that recapitulate the full span of thymopoiesis, from hematopoietic stem and progenitor cells (HSPCs) through to mature T cells. Existing in vitro models induce T cell commitment from human HSPCs; however, differentiation into mature CD3+TCRab+ single positive (SP) CD8+ or CD4+ cells is limited. We describe here a serum-free, artificial thymic organoid (ATO) system that supports highly efficient and reproducible in vitro differentiation and positive selection of conventional human T cells from all sources of HSPCs. ATO-derived T cells exhibited mature naïve phenotypes, a diverse TCR repertoire, and TCR-dependent function. ATOs initiated with TCR-engineered HSPCs produced T cells with antigen specific cytotoxicity and near complete lack of endogenous TCR Vβ expression, consistent with allelic exclusion of Vβ loci. ATOs provide a robust tool for studying human T cell development and stem cell based approaches to engineered T cell therapies.
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Affiliation(s)
- Christopher S Seet
- Division of Hematology-Oncology, Department of Medicine, David Geffen School of Medicine (DGSOM), University of California Los Angeles (UCLA), Los Angeles, California, USA
| | - Chongbin He
- Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California, USA
| | - Michael T Bethune
- Division of Biology and Biological Engineering, California Institute of Technology (Caltech), Pasadena, California, USA
| | - Suwen Li
- Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California, USA
| | - Brent Chick
- Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California, USA
| | - Eric H Gschweng
- Department of Microbiology, Immunology and Molecular Genetics, DGSOM, UCLA, Los Angeles, California, USA
| | - Yuhua Zhu
- Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California, USA
| | - Kenneth Kim
- Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California, USA
| | - Donald B Kohn
- Department of Microbiology, Immunology and Molecular Genetics, DGSOM, UCLA, Los Angeles, California, USA.,Division of Pediatric Hematology-Oncology, Department of Pediatrics, DGSOM, UCLA, Los Angeles, California, USA.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California, USA.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California, USA
| | - David Baltimore
- Division of Biology and Biological Engineering, California Institute of Technology (Caltech), Pasadena, California, USA
| | - Gay M Crooks
- Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California, USA.,Division of Pediatric Hematology-Oncology, Department of Pediatrics, DGSOM, UCLA, Los Angeles, California, USA.,Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California, USA.,Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California, USA
| | - Amélie Montel-Hagen
- Department of Pathology and Laboratory Medicine, DGSOM, UCLA, Los Angeles, California, USA
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22
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Kohn LA, Seet CS, Scholes J, Codrea F, Chan R, Zaidi-Merchant S, Zhu Y, De Oliveira S, Kapoor N, Shah A, Abdel-Azim H, Kohn DB, Crooks GM. Human lymphoid development in the absence of common γ-chain receptor signaling. J Immunol 2014; 192:5050-8. [PMID: 24771849 DOI: 10.4049/jimmunol.1303496] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Despite the power of model systems to reveal basic immunologic mechanisms, critical differences exist between species that necessitate the direct study of human cells. Illustrating this point is the difference in phenotype between patients with SCID caused by mutations affecting the common γ-chain (γc) cytokine signaling pathway and mice with similar mutations. Although in both species, null mutations in either IL-2RG (which encodes γc), or its direct downstream signaling partner JAK3, result in T and NK cell deficiency, an associated B cell deficiency is seen in mice but not in humans with these genetic defects. In this study, we applied recent data that have revised our understanding of the earliest stages of lymphoid commitment in human bone marrow (BM) to determine the requirement for signaling through IL-2RG and JAK3 in normal development of human lymphoid progenitors. BM samples from SCID patients with IL-2RG (n = 3) or JAK3 deficiency (n = 2), which produce similar "T-NK-B+" clinical phenotypes, were compared with normal BM and umbilical cord blood as well as BM from children on enzyme treatment for adenosine deaminase-deficient SCID (n = 2). In both IL-2RG- and JAK3-SCID patients, the early stages of lymphoid commitment from hematopoietic stem cells were present with development of lymphoid-primed multipotent progenitors, common lymphoid progenitors and B cell progenitors, normal expression patterns of IL-7RA and TLSPR, and the DNA recombination genes DNTT and RAG1. Thus, in humans, signaling through the γc pathway is not required for prethymic lymphoid commitment or for DNA rearrangement.
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Affiliation(s)
- Lisa A Kohn
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095
| | - Christopher S Seet
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095; Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095
| | - Jessica Scholes
- Broad Stem Cell Research Center Flow Cytometry Core, University of California, Los Angeles, Los Angeles, CA 90095
| | - Felicia Codrea
- Broad Stem Cell Research Center Flow Cytometry Core, University of California, Los Angeles, Los Angeles, CA 90095
| | - Rebecca Chan
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095
| | - Sania Zaidi-Merchant
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095
| | - Yuhua Zhu
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095
| | - Satiro De Oliveira
- Department of Pediatrics, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles CA 90095
| | - Neena Kapoor
- Division of Research Immunology and Bone Marrow Transplant, Children's Hospital Los Angeles, Los Angeles CA 90027; and
| | - Ami Shah
- Department of Pediatrics, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles CA 90095; Division of Research Immunology and Bone Marrow Transplant, Children's Hospital Los Angeles, Los Angeles CA 90027; and
| | - Hisham Abdel-Azim
- Division of Research Immunology and Bone Marrow Transplant, Children's Hospital Los Angeles, Los Angeles CA 90027; and
| | - Donald B Kohn
- Department of Pediatrics, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles CA 90095; Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095
| | - Gay M Crooks
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA 90095; Department of Pediatrics, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles CA 90095;
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23
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Zhang J, Seet CS, Sun C, Li J, You D, Volk A, Breslin P, Li X, Wei W, Qian Z, Zeleznik-Le NJ, Zhang Z, Zhang J. p27kip1 maintains a subset of leukemia stem cells in the quiescent state in murine MLL-leukemia. Mol Oncol 2013; 7:1069-82. [PMID: 23988911 DOI: 10.1016/j.molonc.2013.07.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [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: 06/07/2013] [Revised: 07/22/2013] [Accepted: 07/31/2013] [Indexed: 12/14/2022] Open
Abstract
MLL (mixed-lineage leukemia)-fusion genes induce the development of leukemia through deregulation of normal MLL target genes, such as HOXA9 and MEIS1. Both HOXA9 and MEIS1 are required for MLL-fusion gene-induced leukemogenesis. Co-expression of HOXA9 and MEIS1 induces acute myeloid leukemia (AML) similar to that seen in mice in which MLL-fusion genes are over-expressed. p27(kip1) (p27 hereafter), a negative regulator of the cell cycle, has also been defined as an MLL target, the expression of which is up-regulated in MLL leukemic cells (LCs). To investigate whether p27 plays a role in the pathogenesis of MLL-leukemia, we examined the effects of p27 deletion (p27(-/-)) on MLL-AF9 (MA9)-induced murine AML development. HOXA9/MEIS1 (H/M)-induced, p27 wild-type (p27(+/+)) and p27(-/-) AML were studied in parallel as controls. We found that LCs from both MA9-AML and H/M-AML can be separated into three fractions, a CD117(-)CD11b(hi) differentiated fraction as well as CD117(+)CD11b(hi) and CD117(+)CD11b(lo), two less differentiated fractions. The CD117(+)CD11b(lo) fraction, comprising only 1-3% of total LCs, expresses higher levels of early hematopoietic progenitor markers but lower levels of mature myeloid cell markers compared to other populations of LCs. p27 is expressed and is required for maintaining the quiescent and drug-resistant states of the CD117(+)CD11b(lo) fraction of MA9-LCs but not of H/M-LCs. p27 deletion significantly compromises the leukemogenic capacity of CD117(+)CD11b(lo) MA9-LCs by reducing the frequency of leukemic stem cells (LSCs) but does not do so in H/M-LCs. In addition, we found that p27 is highly expressed and required for cell cycle arrest in the CD117(-)CD11b(hi) fraction in both types of LCs. Furthermore, we found that c-Myc expression is required for maintaining LCs in an undifferentiated state independently of proliferation. We concluded that p27 represses the proliferation of LCs, which is specifically required for maintaining the quiescent and drug-resistant states of a small subset of MA9-LSCs in collaboration with the differentiation blockage function of c-Myc.
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Affiliation(s)
- Jun Zhang
- Department of Biology, College of Life and Environment Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, PR China; Oncology Institute, Cardinal Bernardin Cancer Center and Department of Pathology, Loyola University Chicago, Maywood, IL 60153, United States
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24
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Abstract
The basic helix-loop-helix transcription factors encoded by the E2A gene function at the apex of a transcriptional hierarchy involving E2A, early B cell factor (EBF), and Pax5, which is essential for B lymphopoiesis. In committed B lineage progenitors, E2A proteins have also been shown to regulate many lineage-associated genes. Herein, we demonstrate that the block in B lymphopoiesis imposed by the absence of E2A can be overcome by expression of EBF, but not Pax5, indicating that EBF is the essential target of E2A required for development of B lineage progenitors. Our data demonstrate that EBF, in synergy with low levels of alternative E2A-related proteins (E proteins), is sufficient to promote expression of most B lineage genes. Remarkably, however, we find that E2A proteins are required for interleukin 7-dependent proliferation due, in part, to a role for E2A in optimal expression of N-myc. Therefore, high levels of E protein activity are essential for the activation of EBF and N-myc, whereas lower levels of E protein activity, in synergy with other B lineage transcription factors, are sufficient for expression of most B lineage genes.
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Affiliation(s)
- Christopher S Seet
- Department of Pathology, University of Chicago, 5841 S. Maryland Avenue, MC 1089, Chicago, IL 60637, USA
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25
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Abstract
BACKGROUND Previous studies have not found a consistent association between exposure to domestic cooking using gas appliances and exacerbation of asthma. We investigated the immediate airflow response to acute exposure from single episodes of gas cooking, and peak airflow variability from continued exposure to repeated episodes of gas cooking in a group of non-smoking asthmatic women. METHODS Sixteen adult non-smoking women with mild to severe persistent asthma were studied. The acute short term level of nitrogen dioxide (NO2) during gas cooking episodes and the mean exposure to NO2 from repeated gas cooking episodes were measured over a 2 week period, as well as proxy measures of frequency of cooking on each day and the length of time spent cooking each day. Their asthma status was monitored using peak expiratory flow rates (PEFR) before and after cooking, 2 week self-recorded serial readings of PEFR, respiratory symptom severity score, and use of rescue bronchodilators for acute asthma attacks. RESULTS Cooking was significantly associated with an immediate mean fall in PEFR of 3.4% (p=0.015, paired t test). The acute short term NO2 level during cooking was significantly correlated with the fall in PEFR (r=-0.579; p=0.019). The frequency of cooking over a 2 week period was positively correlated with the mean exposure to NO2 (r=0.529; p=0.042). Continued exposure to NO2 over a 2 week period was associated significantly with increased frequency of rescue bronchodilator usage for asthma attacks (r=0.597; p=0.031). However, it was negatively associated with PEFR variability (r=-0.512; p=0.051) and respiratory symptom severity score (r= -0.567; p=0.043), probably due to the masking effects of bronchodilator treatment. CONCLUSIONS Acute short term exposure to NO2 from single episodes of gas cooking is associated with immediate airflow limitation. Continued exposure from repeated episodes of gas cooking in asthmatic women is associated with greater use of rescue bronchodilators.
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Affiliation(s)
- T P Ng
- Department of Community, Occupational and Family Medicine, Faculty of Medicine, National University of Singapore, Lower Kent Ridge Road, Singapore.
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Zou Z, Hu YF, Sham TK, Huang HH, Xu GQ, Seet CS, Chan L. XAFS studies of Al/TiNx films on Si(100) at the Al K- and L3,2-edge. J Synchrotron Radiat 1999; 6:524-525. [PMID: 15263367 DOI: 10.1107/s0909049599001247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 01/22/1999] [Indexed: 05/24/2023]
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