Evaluation of PD-1 And TIM-3 Expression Levels of CD8+ T Cells in Renal Transplant Patients

Authors : Burcu Çerçi Alkaç, Mustafa Soyöz, Melek Pehlivan, Tülay Kılıçaslan Ayna, Erhan Tatar, Mehmet Tanrısev, Hatice İlayhan Karahan Çöven, İbrahim Pirim

Pages : 151-157

Doi:10.17343/sdutfd.1391007

View : 62 | Download : 70

Publication Date : 2024-06-29

Article Type : Research

Abstract :Objective: After kidney transplantation, CD8+ T cells can infiltrate the kidney and cause necrosis, tubulitis, and even transplant rejection. For this reason, control of the T cell response is very important, and T cell immunoglobulin and mucin domain 3 (TIM-3) and programmed death 1 (PD-1) molecules play a role in regulating the T cell response. It is thought that the levels of TIM-3 and PD-1 expressions may be guiding in determining the clinical course after transplantation. This study aimed to determine the relationship between the mRNA levels of PD-1 and TIM-3 genes in peripheral blood samples taken from kidney transplant patients and the clinical conditions of the patients. Material and Method: 60 peripheral blood samples were collected from 30 kidney transplant patients, both pre-transplantation (pre-tx) and post-transplantation (post-tx). CD8+ T cells were separated from other lymphocytes by magnetic cell separation system (MACS) and their purity was determined by flow cytometry. Then, RNA was isolated and after cDNA conversion, the expressions of PD-1 and TIM-3 genes were determined by real-time polymerase chain reaction. Results: While it was determined that the TIM-3 gene expression level increased in patients with acute tubular necrosis, antibody-mediated rejection and cell-mediated rejection findings (p<0.001), no correlation was found between PD-1 expression levels and the clinical findings of the patients. Conclusion: It is thought that comparing TIM-3 mRNA levels before and after kidney transplantation may be a useful tool in evaluating the clinical status of patients.
Keywords : PD-1, TIM-3, Bağışıklık kontrol noktası düzenleyicileri, Böbrek nakli