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A novel peptide RIFV suppresses human adipocyte differentiation through the inhibition of C/EBP-β expression

Authors
  • Zhang, Wen1, 2
  • Shen, Dan1
  • Li, Yun1
  • Zhong, Hong1
  • Wang, Xing1
  • Cui, Xian-wei1
  • Shi, Chun-Mei1
  • Ji, Chen-Bo1
  • Guo, Xi-Rong3
  • Chen, Ling1
  • 1 Women’s Hospital of Nanjing Medical University, Nanjing, 210029, China , Nanjing (China)
  • 2 Affiliated to Nantong University, Nantong, China , Nantong (China)
  • 3 Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China , Shanghai (China)
Type
Published Article
Journal
Nutrition & Metabolism
Publisher
Springer (Biomed Central Ltd.)
Publication Date
Dec 23, 2019
Volume
16
Issue
1
Identifiers
DOI: 10.1186/s12986-019-0414-z
Source
Springer Nature
Keywords
License
Green

Abstract

BackgroundObesity is a global epidemic disease that increases the risk of metabolic syndrome. However, therapeutic drugs for obesity are still scarce. In recent years, peptides have been identified as new biological regulators. RIFV (R-I-F-V-P-I-K-G-R-P-A-P), a novel active peptide from our peptide database.MethodsWe performed oil red O staining and triglyceride measurement to analyze the influence of RIFV on white preadipocytes differentiation. Then the effects of RIFV on cell proliferation, apoptosis and cell cycle were determined by using CCK-8 assay and flow cytometry. The mRNA and protein levels of adipogenesis-related genes were respectively detected by qRT-PCR and western blot. Rescue experiment was conducted to confirm whether RIFV could regulate adipocytes differentiation via targeting C/EBP-β. Finally, the luciferase reporter gene assay was performed to verify the regulation of RIFV on C/EBP-β gene.ResultsRIFV was revealed to inhibit the differentiation of human white adipocytes without affecting their proliferation. Additionally, RIFV could also suppress the differentiation of mouse primary white preadipocytes isolated from inguinal fat tissues. Furthermore, RIFV may have an inhibitory effect on adipogenesis by inhibiting the regulation of the adipogenic gene C/EBP-β.ConclusionsOur results indicated that RIFV may be a novel essential regulator of adipocyte differentiation and represents a therapeutic strategy for obesity and related complications.

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