Self-assembling peptide hydrogel scaffolds support stem cell-based hair follicle regeneration

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• 作者：Xiaoxiao Wang ; PhD^a ; ^b ; ¹ ; Jinmei Wang ; PhD^b ; ¹ ; Ling Guo ; MD^b ; Xusheng Wang ; PhD^a ; ^b ; Haiyan Chen ; MS^a ; ^b ; ^c ; Xiumei Wang ; PhD^d ; Jianjun Liu ; PhD^e ; Edward E. Tredget ; MD^f ; Yaojiong Wu ; MD ; PhD^b ; ^c ; ^{wu.yaojiong@sz.tsinghua.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Peptide hydrogel ; RADA16 ; PRG ; Hair follicle neogenesis ; Skin derived precursors
• 刊名：Nanomedicine: Nanotechnology, Biology and Medicine
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：12
• 期：7
• 页码：2115-2125
• 全文大小：2849 K

文摘

Recent studies show that designer peptide nanofibers can mimic properties of extracellular matrix molecules, promising great potential as scaffold materials for tissue engineering. However, their ability in supporting organogenesis has not been studied. Here we examined the effect of self-assembling peptide hydrogels in supporting skin derived precursors (SKPs) in hair follicle neogenesis. We found that hydrogels formed by RADA16, PRG which contains RGD, and particularly the combination of RADA16 and PRG (RADA-PRG) enhanced SKP proliferation. Notably, the RADA-PRG hydrogel, which exhibited advantages of RADA16 in adequate nanofiber formation and PRG in providing the integrin binding sequence, exhibited superior effects in enhancing SKP survival, expression of hair induction signature genes such as Akp2 and Bmp6, and more importantly de novo hair genesis in mice. Thus our results suggest that RADA-PRG may serve as a novel scaffold material for stem cell transplantation and tissue engineering.