Effects Of TMSB10 On Radiosensitivity And The Underlying Mechanism In Cervical Cancer Cells

Purpose: Presently,surgery and chemoradiotherapy are the two major methods of treating early and late-stage cervical cancer respectively.Radioresistance is the leading reason of Failure of radiotherapy in cervical cancer.Nevertheless,a clear understanding of radiosensitivity in cervical cancer is lacking.Thymosin beta10,a small bioactive peptide,plays various roles in multiple tumors.However,the effect of TMSB10 on the radiosensitivity of cervical cancer has not been conducted.In order to present a novel idea for the efficacy of radiotherapy in cervical cancer,the study was set out to investigate the effects of TMSB10 on cervical cancer cells growth,migration,invasion and radiosensitivity.Methods:1、 GEPIA database was used to analyze the TMSB10 expression levels in cervical cancer tissue.2、 Through CCK8 and clonogenic assay,we assessed the influence of TMSB10 on cervical cancer cells proliferation under the TMSB10-low-expression or high-expression condition.3、 To assess the effect of TMSB10 expression level on cell migration and invasion,we conducted transwell assay.4、 The impact of TMSB10 on the radiosensitivity was reflected by clone-forming assay in cervical cancer cells.5、 Clonogenic assay was used to assess whether AKT inhibitor could reverse the impact of TMSB10 on the radiosensitivity of cervical cancer cells.6、 ENCODE database was used to explore the transcription factors of TMSB10 in cervical cancer cells.The expression of TMSB10 in cervical cancer cells after C646(an effective and selective inhibitor of ep300)treatment was analyzed by western blot and quantitative real-time PCR.7、 Clone-forming assay was performed to evaluate the regulation of C646 on the radiosensitivity of TMSB10 over-expression cervical cancer cells.Results1、 GEPIA analysis showed that compared with normal tissue,the m RNA level of TMSB10 was higher in most tumor tissues.Likewise,TMSB10 expression level was elevated in cervical cancer tissue.2、 In cervical cancer cells,TMSB10 facilitated cell growth.3、 TMSB10 promoted cervical cancer cells migration and invasion.4、 Overexpression of TMSB10 decreased the radiosensitivity of cervical cancer cells.5、 AKT inhibitor could reverse the effect of TMSB10 on the radiosensitivity of cervical cancer cells.6、 C646 reduced the m RNA and protein levels of TMSB10 in cervical cancer cells.7、 C646 increased the radiosensitivity of TMSB10 over-expression cervical cancer cells.Conclusions1、 In vitro,TMSB10 stimulates migration and invasion of cervical cancer cells and is a key molecule to regulate the radiosensitivity of cervical cancer cells.2、 TMSB10 influences the radiosensitivity of cervical cancer cells via AKT pathway.3、 C646,an EP300 inhibitor,can reverse the effect of TMSB10 on the radiosensitivity of cervical cancer cells.In general,EP300/TMSB10/AKT pathway participates in regulation of radiosensitivity in cervical cancer cells.Our study offers a novel promising target for treatment of cervical cancer.