Collagen-like Polypeptide Poly(Pro-Hyp-Gly) Conjugated with Gly-Arg-Gly-Asp-Ser and Pro-His-Ser-Arg-Asn Peptides Enhances Cell Adhesion, Migration, and Stratification

被引:17
|
作者
Shibasaki, Yoshiaki [1 ]
Hirohara, Shiho [1 ]
Terada, Kayo [1 ]
Ando, Tsuyoshi [1 ]
Tanihara, Masao [1 ]
机构
[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300192, Japan
关键词
collagen; GRGDS; PHSRN; synergistic site; stratification; CORNEAL EPITHELIAL-CELLS; FIBRONECTIN RECEPTOR; SYNERGY SITE; INTEGRINS; ALPHA-5-BETA-1; IDENTIFICATION; STABILITY; SEQUENCE; MOTILITY; DOMAINS;
D O I
10.1002/bip.21551
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Collagens are widely used in medical applications, including as a scaffold for tissue regeneration. However, animal-derived collagens have several drawbacks, such as low thermal stability, nonspecific cell adhesion, antigenicity, and contamination with pathogenic substances. To overcome these problems, we chemically synthesized the collagen-like polypeptide, poly(prolyl-hydroxyprolyl-glycyl) (poly(Pro-Hyp-Gly)), which forms a collagen-like triple-helical structure and shows biodegradability and biocompatibility. Here, we designed a novel scaffold where fibronectin-derived Gly-Arg-Gly-Asp-Ser (GRGDS) and Pro-His-Ser-Arg-Asn (PHSRN) peptides were simultaneously conjugated with poly(Pro-Hyp-Gly). We assessed cell adhesion and migration activities using NIH3T3 cells in the scaffold and stratification of immortalized rabbit corneal epithelial cells. Cell adhesion was enhanced in scaffolds with GRGDS, increased with increasing amounts of conjugated GRGDS, and was significantly higher than bovine type I atelocollagen but lower than bovine fibronectin. Interestingly, simultaneous conjugation of GRGDS and PHSRN synergistically enhanced cell migration. Scaffolds containing almost equal amounts of GRGDS and PHSRN showed significantly higher cell migration than bovine type I atelocollagen. Addition office GRGDS completely inhibited cell migration on the scaffold, whereas addition of free PHSRN partially inhibited cell migration. These results suggest that GRGDS plays a definitive role, and PHSRN plays an additional role, in cell migration. Conjugation of GRGDS resulted in the same level of stratification of rabbit corneal epithelial cells compared with bovine type I atelocollagen and bovine fibronectin. Because the simultaneous conjugation of GRGDS and PHSRN on poly(Pro-Hyp-Gly) enhances cell adhesion, migration, and stratification, it may be a useful scaffold for tissue regeneration. (C) 2010 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 96: 302-315, 2011.
引用
收藏
页码:302 / 315
页数:14
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