Inferences of Individual Drug Response-Related Long Non-coding RNAs Based on Integrating Multi-omics Data in Breast Cancer7.032Mol Ther Nucleic Acids . 2020 Jun 5;20:128-139. doi: 10.1016/j.omtn.2020.01.038. Epub 2020 Feb 15.
Abstract
Differences in individual drug responses are obstacles in breast cancer (BRCA) treatment, so predicting responses would help to plan treatment strategies. The accumulation of cancer molecular profiling and drug response data provide opportunities and challenges to identify novel molecular signatures and mechanisms of tumor responsiveness to drugs in BRCA. This study evaluated drug responses with a multi-omics integrated system that depended on long non-coding RNAs (lncRNAs). We identified drug response-related lncRNAs (DRlncs) by combining expression data of lncRNA, microRNA, messenger RNA, methylation levels, somatic mutations, and the survival data of cancer patients treated with drugs. We constructed an integrated and computational multi-omics approach to identify DRlncs for diverse chemotherapeutic drugs in BRCA. Some DRlncs were identified with Adriamycin, Cytoxan, Tamoxifen, and all samples for BRCA patients. These DRlncs showed specific features regarding both expression and computational accuracies. The DRlnc-gene co-expression networks were constructed and analyzed. Key DRlncs, such as HOXA-AS2 (Ensembl: ENSG00000253552), in the drug Adriamycin were characterized. The experimental analysis also suggested that HOXA-AS2 (Ensembl: ENSG00000253552) was a key DRlnc in Adriamycin drug resistance in BRCA patients. Some DRlncs were associated with survival and some specific functions. A possible mechanism of DRlnc HOXA-AS2 (Ensembl: ENSG00000253552) in the Adriamycin drug response for BRCA resistance was inferred. In summary, this study provides a framework for lncRNA-based evaluation of clinical drug responses in BRCA. Understanding the underlying molecular mechanisms of drug responses will facilitate improved responses to chemotherapy and outcomes of BRCA treatment.
Keywords: breast cancer; drug response; long non-coding RNAs; multi-omics integration; prognosis.
本文整合了TCGA lncRNA、miRNA、mRNA表达,DNA甲基化,体细胞突变,生存信息,药物反应信息的多维组学数据。基于实验证实的lncRNA互作关系,通过生物信息学计算方法在乳腺癌中识别了与化疗药物反应相关的DRlncs。并且通过共表达网络,功能富集等生物信息学方法刻画了DRlncs。利用公共数据,并结合实验分析。优势在于多维组学数据的整合和分析,对TCGA临床信息的独特挖掘有效识别了乳腺癌中关键的DRlncs,为临床治疗提供了指导意义。
转自生信人