The inhibitory effect of type V transforming growth factor-β receptor antagonist on the proliferation of keloid fibroblasts by suppressing insulin-like growth factor-binding protein 3-interleukin-6 signaling

Hyperplasia of fibroblasts is critical in keloid pathogenesis. Insulin-like growth factor-binding protein 3 (IGFBP3) is an important factor in the regulation of cell growth and type V transforming growth factor-β receptor (TβR-V) is a specific receptor of IGFBP3. However, the role of IGFBP3 in keloid development has not been reported. This study aimed to investigate the role of IGFBP3 in keloid pathogenesis and evaluate the effects of TβR-V antagonist on keloid fibroblasts (KFs) activities. IGFBP3 expression in keloids and its impact on KF proliferation were examined. The effects of TβR-V antagonist on KF cell proliferation, migration, and invasion were also investigated. Differentially expressed genes (DEGs) between TβR-V antagonist treated and nontreated KFs were identified through RNA-sequencing (RNA-seq), followed by Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and protein–protein interaction (PPI) network analyses. IGFBP3 was overexpressed in keloids and could promote KF proliferation. TβR-V antagonist suppressed KFs proliferation, migration, and invasion. GO and KEGG analyses showed that the downregulated DEGs revealed by RNA-seq were significantly enriched in terms related to cell proliferation. Interleukin-6 (IL-6) was identified as the only gene interacting with IGFBP3 in the PPI network and was associated with nine hub genes. In vitro assay confirmed the suppression of IL-6 by TβR-V antagonist in KFs. Our study demonstrated that TβR-V antagonist could inhibit keloid growth likely through suppressing IGFBP3-IL-6 signaling activation. These findings suggest that targeting TβR-V could be a potential therapeutic strategy for keloid treatment.

• Publication year

  2024

• Venue

  Zhōnghuá Pífūkē Yīxué Zázhì

• Publication date

  2024-09-24

• Fields of study

  Not labeled

• Identifiers
  DOI 10.4103/ds.ds-d-24-00052
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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