PMID- 23860800 OWN - NLM STAT- MEDLINE DCOM- 20151217 LR - 20211021 IS - 1993-0402 (Electronic) IS - 1672-0415 (Linking) VI - 21 IP - 3 DP - 2015 Mar TI - Glucan HBP-A increase type II collagen expression of chondrocytes in vitro and tissue engineered cartilage in vivo. PG - 196-203 LID - 10.1007/s11655-013-1511-x [doi] AB - OBJECTIVE: Although chondroprotective activities have been documented for polysaccharides, the potential target of different polysaccharide may differ. The study was aimed to explore the effect of glucan HBP-A in chondrocyte monolayer culture and chondrocytes-alginate hydrogel constructs in vivo, especially on the expression of type II collagen. METHODS: Chondrocytes isolated from rabbit articular cartilage were cultured and verified by immunocytochemical staining of type II collagen. Chondrocyte viability was assessed after being treated with HBP-A in different concentrations. Morphological status of chondrocytes-alginate hydrogel constructs in vitro was observed by scanning electron microscope (SEM). The constructs were treated with HBP-A and then injected to nude mice subcutaneously. Six weeks after transplantation, the specimens were observed through transmission electron microscopy (TEM). The mRNA expressions of disintegrin and metalloproteinase with thrombospondin motifs 5 (ADAMTs-5), aggrecan and type II collagen in both monolayer culture and constructs were determined by real time polymerase chain reaction (PCR). The expression of type II collagen and matrix metalloproteinases-3 (MMP-3) in chondrocyte monolayer culture was also tested through Western blot and enzyme linked immunosorbent assay (ELISA), respectively. RESULTS: MMP-3 secretion and ADAMTs-5 mRNA expression in vitro were inhibited by HBP-A at 0.3 mg/mL concentration. In morphological study, there were significant appearance of collagen in those constructs treated by HBP-A. Accordingly, in both chondrocyte monolayer culture and chondrocytes-alginate hydrogel constructs, the expression of type II collagen was increased significantly in HBP-A group when compared with control group (P<0.001). CONCLUSIONS: The study documented that the potential pharmacological target of glucan HBP-A in chondrocytes monolayer culture and tissue engineered cartilage in vivo may be concerned with the inhibition of catabolic enzymes MMP-3, ADAMTs-5, and increasing of type II collagen expression. FAU - Cao, Yue-long AU - Cao YL AD - Research Institute of Orthopaedics, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China, ningtcm@126.com. FAU - Liu, Ting AU - Liu T FAU - Pang, Jian AU - Pang J FAU - Gao, Ning-yang AU - Gao NY FAU - Zhan, Hong-sheng AU - Zhan HS FAU - Shi, Yin-yu AU - Shi YY FAU - Wang, Xiang AU - Wang X FAU - Wang, Shun-chun AU - Wang SC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130716 PL - China TA - Chin J Integr Med JT - Chinese journal of integrative medicine JID - 101181180 RN - 0 (Aggrecans) RN - 0 (Alginates) RN - 0 (Collagen Type II) RN - 0 (Glucans) RN - 0 (Hexuronic Acids) RN - 0 (RNA, Messenger) RN - 25852-47-5 (Hydrogel, Polyethylene Glycol Dimethacrylate) RN - 8A5D83Q4RW (Glucuronic Acid) RN - EC 3.4.24.- (ADAM Proteins) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - ADAM Proteins/genetics/metabolism MH - Aggrecans/genetics/metabolism MH - Alginates/pharmacology MH - Animals MH - Cartilage, Articular/drug effects/*physiology MH - Cell Proliferation/drug effects MH - Cell Shape/drug effects MH - Cell Survival/drug effects MH - Chondrocytes/cytology/drug effects/*metabolism/ultrastructure MH - Collagen Type II/genetics/*metabolism MH - Female MH - Glucans/*pharmacology MH - Glucuronic Acid/pharmacology MH - Hexuronic Acids/pharmacology MH - Hydrogel, Polyethylene Glycol Dimethacrylate/pharmacology MH - Immunohistochemistry MH - Matrix Metalloproteinase 3/metabolism MH - Mice, Nude MH - RNA, Messenger/genetics/metabolism MH - Rabbits MH - Tissue Engineering/*methods EDAT- 2013/07/19 06:00 MHDA- 2015/12/19 06:00 CRDT- 2013/07/18 06:00 PHST- 2011/05/10 00:00 [received] PHST- 2013/07/18 06:00 [entrez] PHST- 2013/07/19 06:00 [pubmed] PHST- 2015/12/19 06:00 [medline] AID - 10.1007/s11655-013-1511-x [doi] PST - ppublish SO - Chin J Integr Med. 2015 Mar;21(3):196-203. doi: 10.1007/s11655-013-1511-x. Epub 2013 Jul 16.