Medicinal herbs Fructus corni and Semen cuscutae suppress allograft rejection via distinct immune mechanisms
Autor: | Chuan Zou, Xusheng Liu, Feifei Qiu, Zhenhua Dai, Huazhen Liu, Yu-Qun Zeng, Zi-Ren Su, Yong-Zhuo Liang, Xiao-Wei Jin, Chun-Lin Liang |
---|---|
Rok vydání: | 2016 |
Předmět: |
Graft Rejection
0301 basic medicine medicine.medical_treatment T cells Semen Traditional Chinese medicine 030230 surgery Real-Time Polymerase Chain Reaction T-Lymphocytes Regulatory Mice 03 medical and health sciences Cornus 0302 clinical medicine Immune system herbs and transplantation Immunity Gene expression Animals Humans Transplantation Homologous Medicine Immune response Medicine Chinese Traditional Immunosuppression Therapy Mice Inbred BALB C immunosuppression business.industry Graft Survival Research Paper: Immunology FOXP3 Drug Synergism Forkhead Transcription Factors Immunosuppression Dendritic Cells Skin Transplantation Allografts Interleukin-12 Mice Inbred C57BL 030104 developmental biology Oncology Immunology Immunology and Microbiology Section Drug Therapy Combination business Immunosuppressive Agents Intracellular Drugs Chinese Herbal |
Zdroj: | Oncotarget |
ISSN: | 1949-2553 |
Popis: | Achieving long-term allograft survival without continuous global immunosuppression is highly desirable because constant immunosuppression causes severe side effects. Traditional Chinese medicine (TCM) has been utilized to treat numerous diseases for centuries. To seek novel immunosuppressive agents, we investigated several Chinese herbal formulas that have been shown to be effective in treating autoimmune diseases. C57BL/6 mice were transplanted with a skin graft from Balb/C donors and treated orally with the TCM. IL-12-expressing dendritic cells and CD4+FoxP3+ Tregs were quantified by flow cytometer while intragraft IL-12 gene expression was measured by real-time PCR. Here we identified a unique TCM, San Si formula, which contains three herbs: Fructus corni (FC), Fructus ligustri lucidi (FLL) and Semen cuscutae (SC). We found that either SC or FC, but not FLL, significantly prolonged skin allograft survival while SC plus FC or San Si formula further delayed allograft rejection compared to SC or FC alone. SC and FC, which did not contain cyclosporine and rapamycin, reduced graft-infiltrating T cells and suppressed their proliferation. Importantly, it was SC, but not FC, that induced CD4+FoxP3+ Tregs in recipients. Tregs induced by SC were also more potent in suppression. In contrast, FC repressed both intracellular IL-12 expression by intragraft DCs and IFNγ expression by graft-infiltrating T cells. Moreover, FC inhibited intragraft IL-12 gene expression. Depleting Tregs and providing exogenous IL-12 completely reversed allograft survival induced by SC plus FC. Thus, SC and FC synergistically suppress allograft rejection via distinct mechanisms. |
Databáze: | OpenAIRE |
Externí odkaz: |