Human regulatory T cells against minor histocompatibility antigens: ex vivo expansion for prevention of graft-versus-host disease. 2013

Anandharaman Veerapathran, and Joseph Pidala, and Francisca Beato, and Brian Betts, and Jongphil Kim, and Joel G Turner, and Marc K Hellerstein, and Xue-Zhong Yu, and William Janssen, and Claudio Anasetti
Department of Blood and Marrow Transplantation.

Alloreactive donor T cells against host minor histocompatibility antigens (mHAs) cause graft-versus-host disease (GVHD) after marrow transplantation from HLA-identical siblings. We sought to identify and expand regulatory CD4 T cells (Tregs) specific for human mHAs in numbers and potency adequate for clinical testing. Purified Tregs from normal donors were stimulated by dendritic cells (DCs) from their HLA-matched siblings in the presence of interleukin 2, interleukin 15, and rapamycin. Male-specific Treg clones against H-Y antigens DBY, UTY, or DFFRY-2 suppressed conventional CD4 T cell (Tconv) response to the specific antigen. In the blood of 16 donors, we found a 24-fold (range, 8-fold to 39-fold) excess Tconvs over Tregs reactive against sibling mHAs. We expanded mHA-specific Tregs from 4 blood samples and 4 leukaphereses by 155- to 405-fold. Cultured Tregs produced allospecific suppression, maintained demethylation of the Treg-specific Foxp3 gene promoter, Foxp3 expression, and transforming growth factor β production. The rare CD4 T conv and CD8 T cells in the end product were anergic. This is the first report of detection and expansion of potent mHA-specific Tregs from HLA-matched siblings in sufficient numbers for application in human transplant trials.

UI MeSH Term Description Entries
D008297 Male Males
D005260 Female Females
D005434 Flow Cytometry Technique using an instrument system for making, processing, and displaying one or more measurements on individual cells obtained from a cell suspension. Cells are usually stained with one or more fluorescent dyes specific to cell components of interest, e.g., DNA, and fluorescence of each cell is measured as it rapidly transverses the excitation beam (laser or mercury arc lamp). Fluorescence provides a quantitative measure of various biochemical and biophysical properties of the cell, as well as a basis for cell sorting. Other measurable optical parameters include light absorption and light scattering, the latter being applicable to the measurement of cell size, shape, density, granularity, and stain uptake. Cytofluorometry, Flow,Cytometry, Flow,Flow Microfluorimetry,Fluorescence-Activated Cell Sorting,Microfluorometry, Flow,Cell Sorting, Fluorescence-Activated,Cell Sortings, Fluorescence-Activated,Cytofluorometries, Flow,Cytometries, Flow,Flow Cytofluorometries,Flow Cytofluorometry,Flow Cytometries,Flow Microfluorometries,Flow Microfluorometry,Fluorescence Activated Cell Sorting,Fluorescence-Activated Cell Sortings,Microfluorimetry, Flow,Microfluorometries, Flow,Sorting, Fluorescence-Activated Cell,Sortings, Fluorescence-Activated Cell
D006086 Graft vs Host Disease The clinical entity characterized by anorexia, diarrhea, loss of hair, leukopenia, thrombocytopenia, growth retardation, and eventual death brought about by the GRAFT VS HOST REACTION. Graft-Versus-Host Disease,Homologous Wasting Disease,Runt Disease,Graft-vs-Host Disease,Disease, Graft-Versus-Host,Disease, Graft-vs-Host,Disease, Homologous Wasting,Disease, Runt,Diseases, Graft-Versus-Host,Diseases, Graft-vs-Host,Graft Versus Host Disease,Graft-Versus-Host Diseases,Graft-vs-Host Diseases
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014184 Transplantation, Homologous Transplantation between individuals of the same species. Usually refers to genetically disparate individuals in contradistinction to isogeneic transplantation for genetically identical individuals. Transplantation, Allogeneic,Allogeneic Grafting,Allogeneic Transplantation,Allografting,Homografting,Homologous Transplantation,Grafting, Allogeneic
D015778 Minor Histocompatibility Antigens Allelic alloantigens often responsible for weak graft rejection in cases when (major) histocompatibility has been established by standard tests. In the mouse they are coded by more than 500 genes at up to 30 minor histocompatibility loci. The most well-known minor histocompatibility antigen in mammals is the H-Y antigen. Histocompatibility Antigens, Minor,Minor Histocompatibility Antigen,Minor Histocompatibility Peptide,Minor Histocompatibility Peptides,Antigen, Minor Histocompatibility,Histocompatibility Antigen, Minor,Histocompatibility Peptide, Minor,Histocompatibility Peptides, Minor,Peptide, Minor Histocompatibility
D050378 T-Lymphocytes, Regulatory CD4-positive T cells that inhibit immunopathology or autoimmune disease in vivo. They inhibit the immune response by influencing the activity of other cell types. Regulatory T-cells include naturally occurring CD4+CD25+ cells, IL-10 secreting Tr1 cells, and Th3 cells. Regulatory T Cell,Regulatory T-Cell,Regulatory T-Lymphocyte,Regulatory T-Lymphocytes,Suppressor T-Lymphocytes, Naturally-Occurring,T-Cells, Regulatory,Th3 Cells,Tr1 Cell,Treg Cell,Regulatory T-Cells,Suppressor T-Cells, Naturally-Occurring,Tr1 Cells,Treg Cells,Cell, Regulatory T,Cell, Th3,Cell, Tr1,Cell, Treg,Cells, Regulatory T,Cells, Th3,Cells, Tr1,Cells, Treg,Naturally-Occurring Suppressor T-Cell,Naturally-Occurring Suppressor T-Cells,Naturally-Occurring Suppressor T-Lymphocyte,Naturally-Occurring Suppressor T-Lymphocytes,Regulatory T Cells,Regulatory T Lymphocyte,Regulatory T Lymphocytes,Suppressor T Cells, Naturally Occurring,Suppressor T Lymphocytes, Naturally Occurring,Suppressor T-Cell, Naturally-Occurring,Suppressor T-Lymphocyte, Naturally-Occurring,T Cell, Regulatory,T Cells, Regulatory,T Lymphocytes, Regulatory,T-Cell, Naturally-Occurring Suppressor,T-Cells, Naturally-Occurring Suppressor,T-Lymphocyte, Regulatory,Th3 Cell
D018920 Coculture Techniques A technique of culturing mixed cell types in vitro to allow their synergistic or antagonistic interactions, such as on CELL DIFFERENTIATION or APOPTOSIS. Coculture can be of different types of cells, tissues, or organs from normal or disease states. Cocultivation,Co-culture,Coculture,Co culture,Co-cultures,Cocultivations,Coculture Technique,Cocultures
D018929 Cell Culture Techniques Methods for maintaining or growing CELLS in vitro. Cell Culture,Cell Culture Technique,Cell Cultures,Culture Technique, Cell,Culture Techniques, Cell

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