探索环状RNA-微小RNA-信使核糖核酸相互作用在宫颈癌进展中的作用:对人乳头瘤病毒状态及潜在治疗方法的见解

Exploring the role of circRNA-miRNA-mRNA interactions in cervical cancer progression: insights into HPV status and potential therapeutic approaches.

作者信息

Sindhu K J, Nalini Venkatesan, Sandhya Sundaram, Karunagaran Devarajan

机构信息

Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai-600036, Tamil Nadu, India.

Department of Pathology, Sri Ramachandra Institute of Higher Education and Research, Chennai-600116, Tamil Nadu, India.

出版信息

J Appl Genet. 2025 Jun 18. doi: 10.1007/s13353-025-00982-4.

Abstract

Human papillomavirus (HPV) is the primary etiological factor in cervical cancer. Circular RNAs (circRNAs) contribute significantly to tumor progression, functioning as microRNA (miRNA) sponges and interacting with RNA-binding proteins (RBPs). While circRNA-miRNA-mRNA regulatory networks have been studied in cervical cancer, the lack of intermediate neoplastic samples has limited the understanding of circRNA-driven progression from HPV-positive (HPV ) or HPV-negative (HPV ) normal cervical epithelium (NCE) to cervical squamous cell carcinoma (CSCC). This study addressed that gap by identifying differentially expressed (DE) circRNAs across four comparisons: high-grade squamous intraepithelial lesions (HSIL) vs. HPV  NCE, HSIL vs. HPV NCE, CSCC vs. HPV NCE, and CSCC vs. HPV  NCE, using the limma R package. Commonly dysregulated circRNAs across comparisons were identified, revealing potential contributors to cancer progression regardless of HPV status. Of the 12 DE circRNAs identified, 11 had miRNA partners predicted via circAtlas, implicated in various oncogenic pathways. A protein-protein interaction (PPI) network of 30 hub genes was generated using STRING analysis. Among these, USP39, PQBP1, ANAPC5, STUB1, and UBE2D2 were significantly associated with overall survival in cervical cancer. Validation using qRT-PCR confirmed a competing endogenous RNA (ceRNA) network involving hsa-KIF4A_0022, hsa-miR-29b-2-5p, and UBE2D2 in cervical cancer of South Asian Indian origin. The study utilized CMAP2 and CTDBASE, identifying foretinib, TPCA-1, and dequalinium as promising drugs targeting key hub genes. Although limitations include a small sample size and ethnic heterogeneity in in vitro validation, this study advances our understanding of circRNA mechanisms in cervical cancer and identifies novel biomarkers and therapeutic targets.

摘要

人乳头瘤病毒(HPV)是宫颈癌的主要病因。环状RNA(circRNA)在肿瘤进展中发挥重要作用,可作为微小RNA(miRNA)海绵并与RNA结合蛋白(RBP)相互作用。虽然在宫颈癌中已经研究了circRNA-miRNA-mRNA调控网络,但缺乏中间肿瘤样本限制了我们对circRNA驱动的从HPV阳性(HPV+)或HPV阴性(HPV-)正常宫颈上皮(NCE)进展为宫颈鳞状细胞癌(CSCC)过程的理解。本研究通过使用limma R包,在四个比较组中鉴定差异表达(DE)的circRNA,即高级别鳞状上皮内病变(HSIL)与HPV+ NCE、HSIL与HPV- NCE、CSCC与HPV+ NCE以及CSCC与HPV- NCE,填补了这一空白。确定了各比较组中常见的失调circRNA,揭示了无论HPV状态如何,其对癌症进展的潜在作用。在鉴定出的12个DE circRNA中,有11个通过circAtlas预测有miRNA伴侣,涉及各种致癌途径。使用STRING分析生成了一个由30个枢纽基因组成的蛋白质-蛋白质相互作用(PPI)网络。其中,USP39、PQBP1、ANAPC5、STUB1和UBE2D2与宫颈癌的总生存期显著相关。使用qRT-PCR进行验证,证实了在南亚印度裔宫颈癌中存在一个涉及hsa-KIF4A_0022、hsa-miR-29b-2-5p和UBE2D2的竞争性内源RNA(ceRNA)网络。该研究利用CMAP2和CTDBASE,确定foretinib、TPCA-1和地喹氯铵是靶向关键枢纽基因的有前景的药物。尽管局限性包括体外验证中的样本量小和种族异质性,但本研究推进了我们对宫颈癌中circRNA机制的理解,并确定了新的生物标志物和治疗靶点。

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