West China Journal of Stomatology ›› 2021, Vol. 39 ›› Issue (2): 164-169.doi: 10.7518/hxkq.2021.02.006

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Expression of cyclophilin A in oral squamous cell carcinoma and its effect on cell proliferation and invasion

Xia Xiaoyang1(), Fang Fei1, Liu Yan1, Che Chao1, Ke Jinjuan1, Jiang Shengjun2()   

  1. 1.Dept. of Stomatology, Hubei Integrated Traditional Chinese and Western Medicine Hospital, Wuhan 430015, China
    2.Dept. of Stomatology, Wuhan University People, s Hospital, Wuhan 430060, China
  • Received:2020-04-23 Revised:2021-01-17 Online:2021-04-01 Published:2021-04-09
  • Contact: Jiang Shengjun E-mail:2967939793@qq.com;252956991@qq.com
  • Supported by:
    Central University Basic Research Business Test Project(2042018kf0145)

Abstract: Objective

To investigate the expression of cyclophilin A (CyPA) in oral squamous cell carcinoma (OSCC) and explore the effect of downregulating the expression of CyPA gene on the proliferation and invasion of SCC-25 cells.

Methods

A total of 77 cases of patients with OSCC were selected. The expression levels of CyPA proteins in OSCC and adjacent normal tissues were evaluated. SCC-25 cells were cultured and divided into the CyPA interference sequence group, negative control group, and blank group. The expression levels of CyPA mRNA and protein in cells were detected by using real-time fluorescent quantitative polymerase chain reaction and Western blot, respectively. Cell proliferation was detected by using methyl thiazolyl tetrazolium and plate colony formation assays. Cell invasion was detected by using Transwell assay.

Results

The positive expression rate of CyPA protein in OSCC tissues was 76.62%, which was higher than that in adjacent tissues (P<0.05). The positive expression rate of CyPA protein in TNM stage T3+T4, clinical stage Ⅲ+Ⅳ, moderately or poorly differentiated lymph node metastasis was increased (P<0.05). Compared with the negative control and blank groups, the CyPA interference sequence group had decreased relative expression levels of CyPA mRNA and protein (P<0.05); optical density va-lues of cells at 24, 48, 72, and 96 h (P<0.05); and number of cell colonies and invasive cells (P<0.05).

Conclusion

The CyPA protein is highly expressed in OSCC tissues, and the downregulation of CyPA gene expression in SCC-25 cells can reduce cell proliferation and inhibit cell invasion.

Key words: oral squamous cell carcinoma, cyclophilin A, cell proliferation, invasiveness

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