PMID- 34157688 OWN - NLM STAT- MEDLINE DCOM- 20220225 LR - 20220225 IS - 1748-605X (Electronic) IS - 1748-6041 (Linking) VI - 16 IP - 5 DP - 2021 Jul 6 TI - Effects of bovine cancellous bone powder/poly amino acid composites on cellular behaviors and osteogenic performances. LID - 10.1088/1748-605X/ac0d94 [doi] AB - Xenogeneic bone has good biological activity, but eliminating immunogenicity, while retaining osteogenic abilities, is a challenge. By combining xenogeneic bone with poly amino acid (PAA) that has an amide bond structure, a new type of composite conforming to bionics and low immunogenicity may be obtained. In this study, according to the principles of component bionics, three composites of delipidized cancellous bone powder (DCBP) and PAA were designed and obtained by anin situpolycondensation method, an extrusion molding (EM) method, and a solution-blend method. The three composites were all macroscopically uniform, non-cytotoxic, and demonstrated low immunogenicity by effective removal of residual antigens during preparation. Compared with PAA, mouse bone marrow mesenchymal stem cells (BMSCs) on the surfaces of three composites showed different cellular morphologies. The effects of different preparation methods and cellular morphology on cellular differentiation were confirmed by alkaline phosphatase activity, calcium nodule formation and the expression levels of osteogenic differentiation-related genes (bone morphogenetic protein 2, runt-related transcription factor 2, osteopontin and osteocalcin). Among these composites, DCBP/PAA EM showed best cell proliferation and osteogenic differentiationin vitro, and possessed greater bone formation than PAA in a rabbit femoral condyle study. This study may provide a new method for preparing bioactive bone repair materials with low immunogenicity and superior ability to stimulate differentiation of BMSCsin vitroand osteogenesisin vivo. DCBP/PAA EM might be a promising bone repair material for bone defect treatment. CI - (c) 2021 IOP Publishing Ltd. FAU - Luo, Lin AU - Luo L AD - College of Physics, Sichuan University, Chengdu, People's Republic of China. FAU - Li, Pengcheng AU - Li P AD - College of Physics, Sichuan University, Chengdu, People's Republic of China. FAU - Ren, Haohao AU - Ren H AD - College of Physics, Sichuan University, Chengdu, People's Republic of China. FAU - Ding, Zhengwen AU - Ding Z AD - College of Physics, Sichuan University, Chengdu, People's Republic of China. FAU - Yan, Yonggang AU - Yan Y AUID- ORCID: 0000-0002-9534-1013 AD - College of Physics, Sichuan University, Chengdu, People's Republic of China. FAU - Li, Shuyang AU - Li S AD - Sichuan Provincial Laboratory of Orthopaedic Engineering, The Affiliated Hospital of Southwest Medical University, Luzhou, People's Republic of China. FAU - Yin, Jie AU - Yin J AD - School of Automation and Information Engineering, Sichuan University of Science and Engineering, Zigong, People's Republic of China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210706 PL - England TA - Biomed Mater JT - Biomedical materials (Bristol, England) JID - 101285195 RN - 0 (Amino Acids) RN - 0 (Bone Substitutes) SB - IM MH - *Amino Acids/chemistry/pharmacology MH - Animals MH - Bone Regeneration/drug effects MH - *Bone Substitutes/chemistry/pharmacology MH - Cancellous Bone/*chemistry MH - Cattle MH - Cell Differentiation/drug effects MH - Female MH - Mesenchymal Stem Cells/*drug effects MH - Mice MH - Osteogenesis/*drug effects MH - Rabbits OTO - NOTNLM OT - bone regeneration OT - bovine cancellous bone OT - cellular and cytoskeletal morphology OT - cellular differentiation OT - low immunogenicity EDAT- 2021/06/23 06:00 MHDA- 2022/02/26 06:00 CRDT- 2021/06/22 20:25 PHST- 2021/02/05 00:00 [received] PHST- 2021/06/22 00:00 [accepted] PHST- 2021/06/23 06:00 [pubmed] PHST- 2022/02/26 06:00 [medline] PHST- 2021/06/22 20:25 [entrez] AID - 10.1088/1748-605X/ac0d94 [doi] PST - epublish SO - Biomed Mater. 2021 Jul 6;16(5). doi: 10.1088/1748-605X/ac0d94.