Pilose antler polypeptide CNT14 promoted proliferation and migration of human oral mucosa fibroblast cells

doi:10.19439/j.sjos.2022.06.008

Abstract

Abstract: PURPOSE: To explore the effect of pilose antler polypeptides CNT14 on proliferation and migration of human oral mucosa fibroblast (hOMF) cells and the related molecular mechanism. METHODS: The biosafety of pilose antler polypeptides CNT14 on hOMF cells was verified by live-dead cell staining kit.CCK-8 assay was used to detect the effect of pilose antler polypeptides CNT14 on hOMF cell proliferation. The effect of pilose antler polypeptides CNT14 on hOMF cell migration was detected by scratch test. Western blot was used to detect the expression of α-SMA, TGF-β1, Smad2 and p-Smad2 proteins in hOMF cells stimulated by pilose antler polypeptides CNT14. The effect of Smad2 inhibitors on fibroblast activation induced by pilose antler polypeptides CNT14 was evaluated.The model of keratinized gingival defect was established in New Zealand white rabbits, and the regenerated gingival tissue was stained with H-E. The expression levels of α-SMA, TGF-β1, Smad2 and p-Smad2 proteins in the gingival tissues of regenerated New Zealand white rabbits were detected by immunohistochemistry, and the ability of pilose antler polypeptides CNT14 to promote regeneration of oral gingival tissues was verified. Statistical analysis was performed with SPSS 20.0 software package. RESULTS: The survival rate of hOMF cells was above 95% after treated with pilose antler polypeptides CNT14. After stimulation of hOMF cells with pilose antler polypeptides CNT14, the proliferation and migration rates of hOMF cells were increased compared with the control group (P<0.05). The expression of α-SMA, TGF-β1, Smad2 and p-Smad2 proteins in hOMF cells stimulated by pilose antler peptide CNT14 was increased, and the difference was statistically significant(P<0.05). The expression of α-SMA in fibroblasts induced by Smad2 inhibitor was decreased. In animal experiments, H-E staining showed that the inflammatory response of oral mucosal wounds of New Zealand white rabbits treated with CNT14 was less than that of the control group. Immunohistochemical staining results showed that the expressions of α-SMA, TGF-β1, Smad2 and p-Smad2 in the regenerated gingival tissues of New Zealand white rabbits treated with CNT14 were significantly increased compared with those in the control group on the 9th and 11th days within the gingival wounds(P<0.05). CONCLUSIONS: Pilose antler polypeptides CNT14 has good biosafety and can promote the proliferation and migration of human oral mucosa fibroblast cells, and the expression levels of α-SMA, TGF-β1, Smad2 and p-Smad2 were increased, promoting the regeneration of gingival tissues.

Key words: Pilose antler polypeptides, Human oral mucosa fibroblasts cells, Keratinized gingival, Regeneration, Rabbit

CLC Number:

R781.4

NA Fei, ZHOU Jian-zhong, HE Yong-wen, XIE Zhi-gang, WANG Quan, LI Zi-liang. Pilose antler polypeptide CNT14 promoted proliferation and migration of human oral mucosa fibroblast cells[J]. Shanghai Journal of Stomatology, 2022, 31(6): 607-614.

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