title: Rapamycin modulates the maturation of rat bone marrow-derived dendritic cells.
abstract: The purpose of the study was to observe the effect of rapamycin (RAPA) on the differentiation and maturation of rat bone marrow-derived dendritic cells (BMDCs) in vitro. BMDCs from Wistar rats were cultured with granulocyte-macrophage colony-stimulating factor plus interleukin-4 in the presence or absence of RAPA (20 ng/mL), and stimulated with lipopolysaccharide (LPS) for 24 h before cells and supernatants were collected. Surface phenotype of BMDCs was flow-cytometrically detected to determine the expression of maturation markers, MHC class II and CD86. Supernatants were analyzed for the production of IL-12 and IFN-gamma cytokines by using ELISA. BMDCs were co-cultured with T cells from Lewis rats and mixed lymphocyte reaction was assessed by MTT method. The morphology of BMDCs stimulated with LPS remained immature after RAPA pretreatment. RAPA significantly decreased the CD86 expression, impaired the IL-12 and IFN-gamma production of BMDCs stimulated with LPS, and inhibited the proliferation of allogeneic T cells. In conclusion, RAPA can inhibit the maturation of BMDCs stimulated with LPS in terms of the morphology, surface phenotype, cytokine production, and ability of BMDCs to stimulate the proliferation of allogeneic T cells in vitro.
authors.affiliation: Institute of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. yingjunding@hotmail.com
authors.forename: Yingjun
authors.initials: Y
authors.lastname: Ding
authors.forename: Xiang
authors.initials: X
authors.lastname: Cheng
authors.forename: Tingting
authors.initials: T
authors.lastname: Tang
authors.forename: Rui
authors.initials: R
authors.lastname: Yao
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.forename: Jiangjiao
authors.initials: J
authors.lastname: Xie
authors.forename: Xian
authors.initials: X
authors.lastname: Yu
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Liao
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells / Q000166:cytology*; D002454:Cell Differentiation / Q000187:drug effects* / Q000502:physiology; D002478:Cells, Cultured; D003713:Dendritic Cells / Q000166:cytology*; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D015847:Interleukin-4 / Q000494:pharmacology; D008070:Lipopolysaccharides / Q000494:pharmacology; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D020123:Sirolimus / Q000494:pharmacology*
chemical_list: D008070:Lipopolysaccharides; D015847:Interleukin-4; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D020123:Sirolimus