基于二代测序的分析鉴定出在顺铂耐药食管癌细胞中失调的微小RNA和信号通路。

NGS-based profiling identifies miRNAs and pathways dysregulated in cisplatin-resistant esophageal cancer cells.

作者信息

Pandey Prerna, Suyal Geetika, Pasbola Kiran, Sharma Rinu

机构信息

University School of Biotechnology, Guru Gobind Singh Indraprastha University, Dwarka, Delhi, India.

Zonal Technology Management & Business Planning and Development Unit (ZTM & BPD Unit), Indian Council of Agricultural Research- Indian Agricultural Research Institute (ICAR-IARI), Pusa, New Delhi, India.

出版信息

Funct Integr Genomics. 2023 Mar 30;23(2):111. doi: 10.1007/s10142-023-01041-z.

Abstract

Esophageal cancer (EC) incidence remains to be on a global rise supported by an unchanged recurrence and 5-year survival rate owing to the development of chemoresistance. Resistance to cisplatin, one of the majorly used chemotherapeutic drugs in EC, is a major nuisance. This study sheds light on miRNA dysregulation and its inverse relation with dysregulated mRNAs to guide pathways into the manifestation of cisplatin resistance in EC. A cisplatin-resistant version of an EC cell line was established and comparative profiling by NGS with the parental cell line was employed to identify dysregulation in miRNA and mRNA levels. Protein-protein interaction network analysis was done using Cytoscape, followed by Funrich pathway analysis. Furthermore, selective significant miRNAs were validated using qRT-PCR. miRNA-mRNA integrated analysis was carried out using the Ingenuity Pathway Analysis (IPA) tool. Expression of various established resistance markers supported the successful establishment of cisplatin-resistant cell line. Whole-cell small RNA sequencing and transcriptome sequencing identified 261 miRNAs and 1892 genes to be significantly differentially expressed (DE), respectively. Pathway analysis indicated enrichment of EMT signaling, supported by NOTCH, mTOR, TNF receptor, and PI3K-mediated AKT signaling pathways, in chemoresistant cells. Validation by qRT-PCR confirmed upregulation of miR-10a-5p, miR-618, miR-99a-5p, and miR-935 and downregulation of miR-335-3p, miR-205-5p, miR-944, miR-130a-3p, and miR-429 in resistant cells. Pathway analysis that followed IPA analysis indicated that the dysregulation of these miRNAs and their target genes may be instrumental in the development and regulation of chemoresistance via p53 signaling, xenobiotic metabolism, and NRF2-mediated oxidative stress. This study concludes the interplay between miRNA and mRNA as an important aspect and occurrence in guiding the regulation, acquisition, and maintenance of chemoresistance in esophageal cancer in vitro.

摘要

由于化疗耐药性的发展,食管癌(EC)的发病率在全球范围内持续上升,而复发率和5年生存率却没有变化。对顺铂耐药是EC治疗中的一个主要问题,顺铂是EC治疗中主要使用的化疗药物之一。本研究揭示了miRNA失调及其与失调mRNA的反比关系,以指导EC中顺铂耐药表现的相关途径。建立了一种EC细胞系的顺铂耐药版本,并通过NGS与亲本细胞系进行比较分析,以鉴定miRNA和mRNA水平的失调。使用Cytoscape进行蛋白质-蛋白质相互作用网络分析,随后进行Funrich通路分析。此外,使用qRT-PCR验证了选择性显著miRNA。使用Ingenuity Pathway Analysis(IPA)工具进行miRNA-mRNA综合分析。各种已确立的耐药标志物的表达支持了顺铂耐药细胞系的成功建立。全细胞小RNA测序和转录组测序分别鉴定出261个miRNA和1892个基因有显著差异表达(DE)。通路分析表明,在化疗耐药细胞中,EMT信号通路富集,NOTCH、mTOR、TNF受体和PI3K介导的AKT信号通路也有富集。qRT-PCR验证证实,耐药细胞中miR-10a-5p、miR-618、miR-99a-5p和miR-935上调,miR-335-3p、miR-205-5p、miR-944、miR-130a-3p和miR-429下调。IPA分析后的通路分析表明,这些miRNA及其靶基因的失调可能通过p53信号通路、外源性物质代谢和NRF2介导的氧化应激在化疗耐药的发生和调节中发挥作用。本研究得出结论,miRNA和mRNA之间的相互作用是体外食管癌化疗耐药调节、获得和维持的一个重要方面及现象。

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