title: Autologous bone marrow-derived rat mesenchymal stem cells promote PDX-1 and insulin expression in the islets, alter T cell cytokine pattern and preserve regulatory T cells in the periphery and induce sustained normoglycemia.
abstract: Cell-based therapies offer considerable promise for prevention or cure of diabetes. We explored the potential of autologous, self-renewing, mesenchymal stem cells (MSC) as a clinically-applicable approach to promote glucose homeostasis. In vitro-expanded syngeneic bone marrow-derived MSC were administered following or prior to diabetes induction into a rat model of streptozotocin-induced beta cell injury. MSC were CD45(-)/CD44(+)/CD54(+)/CD90(+)/CD106(+). MSC spontaneously secreted IL-6, HGF, TGF-beta1 and expressed high levels of SDF-1 and low levels of VEGF, IL-1beta and PGE(2), but no EGF, insulin or glucagon. MSC homed to the pancreas and this therapy allowed for enhanced insulin secretion and sustained normoglycemia. Interestingly, immunohistochemistry demonstrated that, the islets from MSC-treated rats expressed high levels of PDX-1 and that these cells were also positive for insulin staining. In addition, peripheral T cells from MSC-treated rats exhibited a shift toward IL-10/IL-13 production and higher frequencies of CD4(+)/CD8(+) Foxp3(+) T cells compared to the PBS-treated rats. These data suggest that the bioactive factors secreted by MSC establish a tissue microenvironment that supports beta cell activation/survival in the pancreas. In addition, because of anti-inflammatory and immunoregulatory effects of MSC on T cells, this work can lead to clinical trial of autologous MSC to prevent/cure type-1 diabetes.
authors.affiliation: Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA.
authors.forename: Imene
authors.initials: I
authors.lastname: Boumaza
authors.forename: Suganya
authors.initials: S
authors.lastname: Srinivasan
authors.forename: William T
authors.initials: WT
authors.lastname: Witt
authors.forename: Carol
authors.initials: C
authors.lastname: Feghali-Bostwick
authors.forename: Yifan
authors.initials: Y
authors.lastname: Dai
authors.forename: Adolfo
authors.initials: A
authors.lastname: Garcia-Ocana
authors.forename: Maryam
authors.initials: M
authors.lastname: Feili-Hariri
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000032:analysis; D001786:Blood Glucose / Q000378:metabolism; D015496:CD4-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology; D018414:CD8-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology; D002465:Cell Movement; D016207:Cytokines / Q000378:metabolism*; D003921:Diabetes Mellitus, Experimental / Q000517:prevention & control / Q000628:therapy*; D003922:Diabetes Mellitus, Type 1 / Q000517:prevention & control / Q000628:therapy; D005260:Female; D051858:Forkhead Transcription Factors / Q000032:analysis; D018398:Homeodomain Proteins / Q000378:metabolism*; D007328:Insulin / Q000097:blood / Q000378:metabolism*; D036341:Intercellular Signaling Peptides and Proteins / Q000378:metabolism; D007515:Islets of Langerhans / Q000378:metabolism*; D008297:Male; D045164:Mesenchymal Stem Cell Transplantation; D059630:Mesenchymal Stem Cells / Q000378:metabolism; D010179:Pancreas / Q000166:cytology / Q000378:metabolism; D051381:Rats; D011917:Rats, Inbred Lew; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D050378:T-Lymphocytes, Regulatory / Q000166:cytology / Q000276:immunology; D015534:Trans-Activators / Q000378:metabolism*; D014182:Transplantation, Autologous
chemical_list: D015703:Antigens, CD; D001786:Blood Glucose; D016207:Cytokines; D051858:Forkhead Transcription Factors; C500522:Foxp3 protein, rat; D018398:Homeodomain Proteins; D007328:Insulin; D036341:Intercellular Signaling Peptides and Proteins; D015534:Trans-Activators; C084010:pancreatic and duodenal homeobox 1 protein