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Follistatin Mitigates Myofibroblast Differentiation and Collagen Synthesis of Fibroblasts from Scar Tissue around Injured Flexor Tendons

 Young-Mi Kang  ;  Su-Keon Lee  ;  Yong-Min Chun  ;  Yun-Rak Choi  ;  Seong-Hwan Moon  ;  Hwan-Mo Lee  ;  Ho-Jung Kang 
 YONSEI MEDICAL JOURNAL, Vol.61(1) : 85-93, 2020 
Journal Title
Issue Date
Follistatin ; fibrosis ; gene therapy ; tendon adhesion ; tendon injuries
PURPOSE: The aim of this study was to investigate the effect of FST gene on the inhibition of fibrosis in fibroblastic cells from scar tissue around repaired zone II flexor tendons. MATERIALS AND METHODS: Immunohistochemistry was conducted on fibroblast cells transfected with adenovirus-LacZ (Ad-LacZ) as a marker gene (control), or with adenovirus-FST (Ad-FST) as a therapeutic gene. Fibroblast cultures without adenoviral exposure served as controls. RESULTS: Fibroblastic cells transfected with Ad-FST demonstrated significant decrease in collagen type I, MMP-1, MMP2, and α-SMA mRNA expressions compared to those transfected with Ad-LacZ. In addition, fibroblastic cells transfected with Ad-FST exhibited significant decrease in MMP-1, TIMP-1, fibronectin, PAI-1, TRPV4, α-SMA, desmin, and PAX7 protein expressions. CONCLUSION: Based on these findings, we conclude that FST may be a novel therapeutic strategy for preventing scar adhesions around repaired tendons by inhibiting fibroblasts from differentiating into myofibroblasts, in addition to producing type I collagen and regulating extracellular matrix turnover via the downregulation of MMP-1 and TIMP-1. FST may also decrease contracture of the scar by inhibiting Ca2+-dependent cell contraction.
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1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Young Mi(강영미) ORCID logo https://orcid.org/0000-0002-7686-6316
Kang, Ho Jung(강호정) ORCID logo https://orcid.org/0000-0003-0273-1264
Moon, Seong Hwan(문성환)
Lee, Hwan Mo(이환모) ORCID logo https://orcid.org/0000-0002-5405-3832
Chun, Yong Min(천용민) ORCID logo https://orcid.org/0000-0002-8147-6136
Choi, Yun Rak(최윤락)
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