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Mammadli M, Huang W, Harris R, Xiong H, Weeks S, May A, Gentile T, Henty-Ridilla J, Waickman AT, August A, Bah A, Karimi M. Targeting SLP76:ITK interaction separates GVHD from GVL in allo-HSCT. iScience 2021; 24:102286. [PMID: 33851101 PMCID: PMC8024657 DOI: 10.1016/j.isci.2021.102286] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/27/2020] [Accepted: 03/04/2021] [Indexed: 12/14/2022] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a curative therapy for hematological malignancies, due to graft-versus-leukemia (GVL) activity mediated by alloreactive donor T cells. However, graft-versus-host disease (GVHD) is also mediated by these cells. Here, we assessed the effect of attenuating TCR-mediated SLP76:ITK interaction in GVL vs. GVHD effects after allo-HSCT. CD8+ and CD4+ donor T cells from mice expressing a Y145F mutation in SLP-76 did not cause GVHD but preserved GVL effects against B-ALL cells. SLP76Y145FKI CD8+ and CD4+ donor T cells also showed less inflammatory cytokine production and migration to GVHD target organs. We developed a novel peptide to specifically inhibit SLP76:ITK interactions, resulting in decreased phosphorylation of PLCγ1 and ERK, decreased cytokine production in human T cells, and separation of GVHD from GVL effects. Altogether, our data suggest that inhibiting SLP76:ITK interaction could be a therapeutic strategy to separate GVHD from GVL effects after allo-HSCT treatment.
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Affiliation(s)
- Mahinbanu Mammadli
- Department of Microbiology and Immunology, SUNY Upstate Medical University, 766 Irving Avenue, Weiskotten Hall Suite 2281, Syracuse, NY 13210, USA
| | - Weishan Huang
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Rebecca Harris
- Department of Microbiology and Immunology, SUNY Upstate Medical University, 766 Irving Avenue, Weiskotten Hall Suite 2281, Syracuse, NY 13210, USA
| | - Hui Xiong
- Department of Radiology, Jiangxi Health Vocational College, Nanchang, 330052, China
| | - Samuel Weeks
- Department of Microbiology and Immunology, SUNY Upstate Medical University, 766 Irving Avenue, Weiskotten Hall Suite 2281, Syracuse, NY 13210, USA
| | - Adriana May
- Department of Microbiology and Immunology, SUNY Upstate Medical University, 766 Irving Avenue, Weiskotten Hall Suite 2281, Syracuse, NY 13210, USA
| | - Teresa Gentile
- Division of Hematology, translational research, SUNY Upstate Medical University, Syracuse NY 13210, USA
| | - Jessica Henty-Ridilla
- Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Adam T. Waickman
- Department of Microbiology and Immunology, SUNY Upstate Medical University, 766 Irving Avenue, Weiskotten Hall Suite 2281, Syracuse, NY 13210, USA
| | - Avery August
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Alaji Bah
- Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Mobin Karimi
- Department of Microbiology and Immunology, SUNY Upstate Medical University, 766 Irving Avenue, Weiskotten Hall Suite 2281, Syracuse, NY 13210, USA
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Ryan MM, Patel M, Hogan K, Lipat AJ, Scandolara R, Das R, Bruker C, Galipeau J, Chinnadurai R. Ruxolitinib Inhibits IFNγ Licensing of Human Bone Marrow Derived Mesenchymal Stromal Cells. Transplant Cell Ther 2021; 27:389.e1-389.e10. [PMID: 33965175 DOI: 10.1016/j.jtct.2021.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 02/01/2021] [Accepted: 02/01/2021] [Indexed: 11/28/2022]
Abstract
Ruxolitinib is a JAK2/JAK1 inhibitor that blocks the inflammatory JAK-STAT signaling pathway. Ruxolitinib has been demonstrated to be effective in the treatment of steroid-resistant acute graft-versus-host disease (GVHD). Ruxolitinib's effect on inflammatory cells of hematopoietic origin is known. However, its effect on nonhematopoietic cell types with immune-modulating and antigen-presenting cell competency plausibly involved in pathogenesis of GVHD has not been explored. Mesenchymal stromal cells (MSCs) are CD45- nonhematopoietic cells of the bone marrow with immune modulatory functions in vivo. MSCs' immunobiology largely depends on their responsiveness to IFNγ. We aimed to define the effect of ruxolitinib on the immunobiology of MSCs that are modulated by IFNγ. Human bone marrow derived MSCs, peripheral blood mononuclear cells (PBMCs), and primary bone marrow aspirates were analyzed for their sensitivity to ruxolitinib-mediated blocking of IFNγ-induced STAT-1 phosphorylation and downstream effector molecules, utilizing Western blot, flow cytometry, secretome analysis, and phosflow techniques. IFNγ-induced cytostatic effects on MSCs are reversed by ruxolitinib. Ruxolitinib inhibits IFNγ and secretome of activated peripheral PBMC-induced STAT-1 phosphorylation on human bone marrow derived MSCs. In addition, ruxolitinib inhibits IFNγ-induced pro-GVHD pathways on MSCs, which includes HLAABC(MHCI), HLADR(MHCII), CX3CL1, and CCL2. IFNγ-induced immunosuppressive molecules IDO and PDL-1 were also inhibited by ruxolitinib on MSCs. Comparative analysis with PBMCs has demonstrated that MSCs are as equal as to HLADR+ PBMC populations in responding to ruxolitinib-mediated inhibition of IFNγ-induced STAT-1 phosphorylation. Ex vivo analysis of human marrow aspirates has demonstrated that ruxolitinib blocks IFNγ-induced STAT-1 phosphorylation in CD45+/-HLADR+/- populations at different levels, which is depending on their sensitivity to IFNγ responsiveness. These results inform the hypothesis that ruxolitinib's immune-modulatory effects in vivo may pharmacologically involve marrow and tissue-resident MSCs. Ruxolitinib affects the immunobiology of MSCs equivalent to professional HLADR+ antigen presenting cells, which collectively mitigate GVHD.
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Affiliation(s)
- Molly Mercedes Ryan
- Department of Medicine, University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin
| | - Mihir Patel
- Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, Georgia
| | - Keenan Hogan
- Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, Georgia
| | - Ariel Joy Lipat
- Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, Georgia
| | - Rafaela Scandolara
- Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, Georgia
| | - Rahul Das
- Department of Medicine, University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin
| | - Charles Bruker
- Department of Pathology, Memorial Health University Medical Center, Savannah, Georgia
| | - Jacques Galipeau
- Department of Medicine, University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin
| | - Raghavan Chinnadurai
- Department of Biomedical Sciences, Mercer University School of Medicine, Savannah, Georgia.
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