PMID- 25515203 OWN - NLM STAT- MEDLINE DCOM- 20151228 LR - 20220331 IS - 1616-5195 (Electronic) IS - 1616-5187 (Linking) VI - 15 IP - 4 DP - 2015 Apr TI - PEG-Poly(L-alanine) thermogel as a 3D scaffold of bone-marrow-derived mesenchymal stem cells. PG - 464-72 LID - 10.1002/mabi.201400426 [doi] AB - Bone-marrow-derived mesenchymal stem cells (BMSCs) were cultured in three-dimensional (3D) scaffolds formed by temperature-sensitive sol-to-gel transition of BMSC-suspended poly(ethylene glycol)-poly(L-alanine) (PEG-PA) aqueous solutions. A commercialized thermogelling 3D scaffold of Matrigel was used for the comparative study. The cells maintained their spherical shapes in the PEG-PA thermogel, whereas fibrous cell morphologies were observed in the Matrigel. Type II collagen and myogenic differentiation factor 1 were dominantly expressed in the PEG-PA thermogel. On the other hand, a significant extent of type III beta-tubulin was expressed in the Matrigel in addition to type II collagen and myogenic differentiation factor 1. After confirming the dominant chondrogenic differentiation of the BMSCs in the PEG-PA thermogel in in vitro study, in vivo study was performed for injectable tissue engineering application of the BMSCs/PEG-PA system. The cell-growing implant was formed in situ by subcutaneous injection of the BMSC-suspended PEG-PA aqueous solution to mice. In vivo study also proved the excellent expressions of chondrogenic biomarkers including collagen type II and sulfated glycosaminoglycan in the mouse model. This paper suggests that the PEG-PA thermogel is a very promising as a 3D culture matrix as well as an injectable tissue-engineering system for preferential chondrogenic differentiation of the BMSCs. CI - (c) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Park, Min Hee AU - Park MH AD - Department of Chemistry and Nano Science, Ewha Global Top 5 Research Program, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-750, Korea. FAU - Moon, Hyo Jung AU - Moon HJ FAU - Park, Jin Hye AU - Park JH FAU - Shinde, Usha Pramod AU - Shinde UP FAU - Ko, Du Young AU - Ko du Y FAU - Jeong, Byeongmoon AU - Jeong B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141216 PL - Germany TA - Macromol Biosci JT - Macromolecular bioscience JID - 101135941 RN - 0 (Drug Combinations) RN - 0 (Laminin) RN - 0 (Peptides) RN - 0 (Proteoglycans) RN - 119978-18-6 (matrigel) RN - 25191-17-7 (polyalanine) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 9007-34-5 (Collagen) SB - IM MH - Animals MH - Bone Marrow Cells/cytology MH - *Cell Differentiation MH - Cell Proliferation MH - Chondrogenesis MH - Collagen/chemistry MH - Drug Combinations MH - *In Vitro Techniques MH - Laminin/chemistry MH - Mesenchymal Stem Cells/*cytology MH - Mice MH - Peptides/chemistry MH - Polyethylene Glycols/chemistry MH - Proteoglycans/chemistry MH - *Tissue Engineering MH - Tissue Scaffolds OTO - NOTNLM OT - 3D culture OT - BMSC OT - hydrogel OT - sol-gel transition EDAT- 2014/12/18 06:00 MHDA- 2015/12/29 06:00 CRDT- 2014/12/18 06:00 PHST- 2014/09/23 00:00 [received] PHST- 2014/10/28 00:00 [revised] PHST- 2014/12/18 06:00 [entrez] PHST- 2014/12/18 06:00 [pubmed] PHST- 2015/12/29 06:00 [medline] AID - 10.1002/mabi.201400426 [doi] PST - ppublish SO - Macromol Biosci. 2015 Apr;15(4):464-72. doi: 10.1002/mabi.201400426. Epub 2014 Dec 16.