Effect of interleukin-15 on effector and regulatory function of anti-CD3/anti-CD28-stimulated CD4(+) T cells
| Autor: | Po-Jen Cheng, Hsiao Ss, Syh-Jae Lin |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
CD4-Positive T-Lymphocytes
T cell T-Lymphocytes chemical and pharmacologic phenomena Biology Lymphocyte Activation Interleukin 21 Th2 Cells medicine Cytotoxic T cell Humans IL-2 receptor Antigen-presenting cell Cells Cultured Interleukin 3 Interleukin-15 Transplantation hemic and immune systems Hematology Th1 Cells Natural killer T cell Molecular biology Coculture Techniques medicine.anatomical_structure CD18 Antigens Interleukin 12 Cytokines |
| Zdroj: | Bone marrow transplantation. 37(9) |
| ISSN: | 0268-3369 |
| Popis: | Autologous transfer of anti-CD3/anti-CD28 (CD3/CD28)-activated CD4(+) T cells may benefit patients receiving autologous stem cell transplant with severe CD4 lymphopenia. Interleukin (IL)-15, an IL-2-like cytokine that promotes T cell survival may enhance immune reconstitution in conjunction with adoptive immunotherapy. We investigated the effect of IL-15 on effector and regulatory function of CD3/CD28-activated CD4(+) T cells. IL-15 upregulated CD45RO and CD25 whereas it down regulated CD62L expression of CD3/CD28-stimulated CD4(+) T cells. Both type 1 (IFN-gamma, tumor necrosis factor (TNF)-alpha) and type 2 (IL-5 and IL-10) production by CD3/CD28-activated CD4(+) T cells was further enhanced by IL-15. Co-culture experiments revealed that CD3/CD28-activated CD4(+) T cells down regulated proliferation of autologous peripheral blood lymphocytes (PBLs) and CD8(+) PBL subsets upon TCR ligation, a contact-dependent effect that was further enhanced by pretreatment with IL-15. Flow cytometric analysis of cell mixture with carboxyfluorescein diacetate succinimidyl ester and Annexin-V-PE staining revealed that CD3/CD28+IL-15-activated CD4(+) T cells showed increased apoptosis over CD4(+) T cells stimulated with CD3/CD28 alone. Taken together, pretreatment of CD3/CD28-activated CD4(+) T cells with IL-15 may increase regulatory function but may aggravate activation-induced apoptosis of CD3/CD28 CD4(+) T cells. |
| Databáze: | OpenAIRE |
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