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1. 南京医科大学附属肿瘤医院,江苏省肿瘤医院,江苏省肿瘤防治研究所放疗科,江苏 南京 210009
2. 南京医科大学第四临床医学院,江苏 南京 210000
[ "章平川(ORCID: 0009-0005-3185-5612),硕士。" ]
尹丽(ORCID: 0009-0004-2669-4087),博士,副教授。
收稿:2022-11-04,
修回:2023-03-04,
纸质出版:2023-05-30
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章平川, 杜鸣宇, 姚成云, 等. 环状RNA hsa_circ_0012779在鼻咽癌中的表达及其对细胞生物学行为影响的机制研究[J]. 中国癌症杂志, 2023,33(5):445-451.
Pingchuan ZHANG, Mingyu DU, Chengyun YAO, et al. Mechanism of circular RNA hsa_circ_0012779 expression in nasopharyngeal carcinoma and its influence on cell biological behavior[J]. China Oncology, 2023, 33(5): 445-451.
章平川, 杜鸣宇, 姚成云, 等. 环状RNA hsa_circ_0012779在鼻咽癌中的表达及其对细胞生物学行为影响的机制研究[J]. 中国癌症杂志, 2023,33(5):445-451. DOI: 10.19401/j.cnki.1007-3639.2023.05.004.
Pingchuan ZHANG, Mingyu DU, Chengyun YAO, et al. Mechanism of circular RNA hsa_circ_0012779 expression in nasopharyngeal carcinoma and its influence on cell biological behavior[J]. China Oncology, 2023, 33(5): 445-451. DOI: 10.19401/j.cnki.1007-3639.2023.05.004.
背景与目的:
环状RNA(circular RNA,circRNA)在多种肿瘤的发展过程中发挥重要的调节作用。然而,circRNA在鼻咽癌中的异常表达和生物学功能仍不清楚。本研究旨在探讨hsa_circ_0012779对鼻咽癌细胞生物学行为的影响及其分子机制。
方法:
通过实时荧光定量聚合酶链反应(real-time fluorescence quantitative polymerase chain reaction,RTFQ-PCR)检测正常人鼻咽上皮细胞NP69及鼻咽癌细胞系CNE2、5-8F、HNE1、SUNE1中hsa_circ_0012779的表达。采用细胞计数试剂盒-8(cell counting kit-8,CCK-8)实验和transwell侵袭实验检测hsa_circ_0012779对鼻咽癌细胞增殖和侵袭能力的影响。采用蛋白质印迹法(Western blot)检测hsa_circ_0012779对ELAV样蛋白1(ELAV like protein 1,ELAVL1)表达的影响,通过RNA下拉实验验证hsa_circ_0012779与ELAVL1的直接结合。
结果:
hsa_circ_0012779在鼻咽癌组织和细胞中高表达,敲减hsa_circ_0012779能抑制鼻咽癌细胞增殖和侵袭,hsa_circ_0012779与RNA结合蛋白ELAVL1结合促进其表达并且共定位于细胞质中。同时,敲减hsa_circ_0012779对鼻咽癌细胞的影响能被ELAVL1过表达逆转。
结论:
hsa_circ_0012779促进ELAVL1的表达,进而促进鼻咽癌细胞增殖和侵袭,影响鼻咽癌的发生、发展。
Background and purpose:
Circular RNA (circRNA) plays an important regulatory role in the development of a variety of tumors. However
the abnormal expression and biological function of circRNA in nasopharyngeal carcinoma remain unclear. This study aimed to explore the effect of hsa_circ_0012779 on the biological behavior of nasopharyngeal carcinoma cells and its molecular mechanism.
Methods:
The expression of hsa_circ_0012779 in human immortalized nasopharyngeal epithelial cell line NP69 and nasopharyngeal carcinoma cell lines CNE2
5-8F
HNE1 and SUNE1 was detected by real-time fluorescence quantitative polymerase chain reaction (RTFQ-PCR). Cell counting kit-8 (CCK-8) assay and transwell invasion assay were used to detect the effect of hsa_circ_0012779 on the proliferation and invasion ability of nasopharyngeal carcinoma cells. The protein level of ELAV like pr
otein 1 (ELAVL1) in NPC cells with hsa_circ_0012779 knockdown was detected by Western blot. The binding of hsa_circ_0012779 and ELAVL1 was verified by RNA pull-down assay.
Results:
hsa_circ_0012779 was highly expressed in nasopharyngeal carcinoma tissues and cells. Knockdown hsa_circ_0012779 could inhibit the proliferation and invasion of nasopharyngeal carcinoma cells. hsa_circ_0012779 bound to RNA-binding protein ELAVL1 to promote its expression and colocalization in cytoplasm. In the meanwhile
the effect of knockdown hsa_circ_0012779 on nasopharyngeal carcinoma cells could be reversed by the overexpression of ELAVL1.
Conclusion:
hsa_circ_0012779 promote the expression of ELAVL1 and thus promote the proliferation and invasion of nasopharyngeal carcinoma
and influence the occurrence and development of nasopharyngeal carcinoma.
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