Deep Sequencing Analysis Reveals Distinctive Non-Coding RNAs When Comparing Tumor Multidrug-Resistant Cells and Extracellular Vesicles with Drug-Sensitive Counterparts

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Sousa, D (Author) Other; Matthiesen, R (Author) Other; Lima, RT (Author) Other; Helena Vasconcelos, MH (Author) FFUP

Journal

Title: Cancers

Vol. 12

Final page: 200

ISSN: 2072-6694

Publisher: MDPI

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 7 Citations

Other information

Authenticus ID: P-00R-QM8

DOI: 10.3390/cancers12010200

Abstract (EN): Multidrug resistance (MDR) is one of the main limitations of cancer treatment. The overexpression of drug-efflux pumps, such as P-glycoprotein (P-gp), is a major cause of MDR. Importantly, different studies have shown that extracellular vesicles (EVs) participate in the communication between MDR cells and drug-sensitive counterparts, promoting dissemination of the MDR phenotype. In the present work, we aimed to identify RNA species present in MDR cells and in EVs released by those cells, which may be associated with the MDR phenotype. The RNA content from two pairs (leukemia and lung cancer) of MDR (P-gp overexpressing) cells and their drug-sensitive counterparts, as well as from their EVs, was analyzed by deep sequencing. Our results showed distinctive transcripts for MDR cells and their EVs, when compared with their drug-sensitive counterparts. Remarkably, two pseudogenes (a novel pseudogene and RNA 5.8S ribosomal pseudogene 2) were found to be increased in EVs released by MDR cells in both leukemia and lung cancer models. Moreover, six miRs (miR-204-5p, miR-139-5p, miR-29c-5p, miR-551b-3p, miR-29b-2-5p, and miR-204-3p) exhibited altered levels in lung cancer MDR cells and their EVs. This study provides insights into the contribution of EVs to MDR.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 22