Abstract:Objective: To investigate the expressions and clinical significances of cyclic RNA ciRS-7 and epidermal growth factor receptor (EGFR) in endometrial cancer. Methods: 62 patients tissus with endometrial cancer who underwent surgical treatment in Handan First Hospital from July 2011 to May 2013 were studied, meanwhile, 60 normal endometrial tissues of hysteromyoma patients undergoing hysterectomy were collected as control group, real-time fluorescence quantitative polymerase chain reaction (qRT-PCR) was used to detected the expression levels of ciRS-7 and EGFR in all specimens, the correlation between the expressions of ciRS-7 and EGFR, and their relationships with clinicopathological characteristics and prognosis. Results: The expression levels of ciRS-7 and EGFR in the study group were significantly higher than those in the control group (P<0.05); the expression of ciRS-7 was not correlated with age and menopause (P>0.05), but with histological differentiation, pathological stage, myometrial invasion, and lymph node metastasis (P<0.05); the expression of EGFR was not related to age (P>0.05), but related to menopause, histological differentiation, pathological stage, myometrial invasion, and lymph node metastasis (P<0.05); the correlation analysis showed that there was a positive correlation between ciRS-7 and EGFR expression in endometrial cancer tissues (r = 0.875, P<0.001); the median survival time of patients with high expression of ciRS-7 was lower than that of patients with low expression (P<0.05), and the median survival time of patients with high expression of EGFR was lower than that of patients with low expression (P<0.05). Conclusion: The expressions of ciRS-7 and EGFR are high in endometrial cancer, they were positively correlated, and correlated with histological differentiation, pathological stage, myometrial invasion, lymph node metastasis, and prognosis, it is speculated that both of them can be used as potential biomarkers for prognostic evaluation of endometrial cancer.
[1] Gibson W J, Hoivik E A, Halle M K, et al. The genomic landscape and evolution of endometrial carcinoma progression and abdominopelvic metastasis:[J]. Nature Genetics, 2016, 48(8):848~855. [2] Talhouk A, Hoang L N, Mcconechy M K, et al. Molecular classification of endometrial carcinoma on diagnostic specimens is highly concordant with final hysterectomy: earlier prognostic information to guide treatment[J]. Gynecologic Oncology, 2016, 143(1):46~53. [3] 杨曦,马珂,吴成.子宫内膜癌的流行病学及高危因素[J].实用妇产科杂志,2015,31(7):485~488. [4] 林晓静.环状RNA在妇科肿瘤中的研究进展[J].现代妇产科进展,2017,26(7):556~557. [5] 孟德祺.EGFR、HER-2、PDGFR-α、PR、ER在子宫内膜癌中的表达及其与肌层浸润的相关性[J].现代医学,2016,28(11):1536~1540. [6] Ding K, Yuan Y, Chong Q Y, et al. Autocrine prolactin stimulates endometrial carcinoma growth and metastasis and reduces sensitivity to chemotherapy[J]. Endocrinology, 2017, 158(6):1595~1611. [7] Zheng X B, Zhang M, Xu M Q. Detection and characterization of ciRS-7: a potential promoter of the development of cancer[J]. Neoplasma, 2017, 64(3):321~328. [8] Pan H, Tao L, Jiang Y, et al. Overexpression of Circular RNA ciRS‐7 Abrogates the Tumor Suppressive Effect of miR‐7 on Gastric Cancer via PTEN/PI3K/AKT Signaling Pathway[J]. Journal of Cellular Biochemistry, 2018, 119(1):440~446. [9] Li R, Ke S, Meng F, et al. CiRS-7 promotes growth and metastasis of esophageal squamous cell carcinoma via regulation of miR-7/HOXB13[J]. Cell Death & Disease, 2018, 9(8):838~851. [10] 时沛.胃腺癌组织中HIF-1α和EGFR蛋白的表达与预后的关系[J].中国肿瘤生物治疗杂志,2016,23(1):89~94. [11] Su C, Han Y, Zhang H, et al. CiRS‐7 targeting miR‐7 modulates the progression of non‐small cell lung cancer in a manner dependent on NF‐κB signalling[J]. Journal of Cellular & Molecular Medicine, 2018, 22(6):3097~3107. [12] 孙连碧,李广海,曹东华.miR-7靶向调节EGFR基因对卵巢癌SKOV3细胞增殖和侵袭的影响[J].解剖科学进展,2017,31(4):360~362.