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Horses with equine recurrent uveitis have an activated CD4+ T-cell phenotype that can be modulated by mesenchymal stem cells in vitro.
Saldinger, Laurel K; Nelson, Seldy G; Bellone, Rebecca R; Lassaline, Mary; Mack, Maura; Walker, Naomi J; Borjesson, Dori L.
Afiliación
  • Saldinger LK; Department of Pathology, Microbiology and Immunology, Veterinary Institute for Regenerative Cures, School of Veterinary Medicine, University of California, Davis, California.
  • Nelson SG; Department of Pathology, Microbiology and Immunology, Veterinary Institute for Regenerative Cures, School of Veterinary Medicine, University of California, Davis, California.
  • Bellone RR; Department of Population Health and Reproduction, Veterinary Genetics Laboratory, School of Veterinary Medicine, University of California, Davis, California.
  • Lassaline M; Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California.
  • Mack M; Department of Population Health and Reproduction, Veterinary Genetics Laboratory, School of Veterinary Medicine, University of California, Davis, California.
  • Walker NJ; Department of Pathology, Microbiology and Immunology, Veterinary Institute for Regenerative Cures, School of Veterinary Medicine, University of California, Davis, California.
  • Borjesson DL; Department of Pathology, Microbiology and Immunology, Veterinary Institute for Regenerative Cures, School of Veterinary Medicine, University of California, Davis, California.
Vet Ophthalmol ; 23(1): 160-170, 2020 Jan.
Article en En | MEDLINE | ID: mdl-31441218
Equine recurrent uveitis (ERU) is an immune-mediated disease causing repeated or persistent inflammatory episodes which can lead to blindness. Currently, there is no cure for horses with this disease. Mesenchymal stem cells (MSCs) are effective at reducing immune cell activation in vitro in many species, making them a potential therapeutic option for ERU. The objectives of this study were to define the lymphocyte phenotype of horses with ERU and to determine how MSCs alter T-cell phenotype in vitro. Whole blood was taken from 7 horses with ERU and 10 healthy horses and peripheral blood mononuclear cells were isolated. The markers CD21, CD3, CD4, and CD8 were used to identify lymphocyte subsets while CD25, CD62L, Foxp3, IFNγ, and IL10 were used to identify T-cell phenotype. Adipose-derived MSCs were expanded, irradiated (to control proliferation), and incubated with CD4+ T-cells from healthy horses, after which lymphocytes were collected and analyzed via flow cytometry. The percentages of T-cells and B-cells in horses with ERU were similar to normal horses. However, CD4+ T-cells from horses with ERU expressed higher amounts of IFNγ indicating a pro-inflammatory Th1 phenotype. When co-incubated with MSCs, activated CD4+ T-cells reduced expression of CD25, CD62L, Foxp3, and IFNγ. MSCs had a lesser ability to decrease activation when cell-cell contact or prostaglandin signaling was blocked. MSCs continue to show promise as a treatment for ERU as they decreased the CD4+ T-cell activation phenotype through a combination of cell-cell contact and prostaglandin signaling.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Uveítis / Linfocitos T CD4-Positivos / Células Madre Mesenquimatosas / Enfermedades de los Caballos Límite: Animals Idioma: En Revista: Vet Ophthalmol Asunto de la revista: MEDICINA VETERINARIA / OFTALMOLOGIA Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Uveítis / Linfocitos T CD4-Positivos / Células Madre Mesenquimatosas / Enfermedades de los Caballos Límite: Animals Idioma: En Revista: Vet Ophthalmol Asunto de la revista: MEDICINA VETERINARIA / OFTALMOLOGIA Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido