ArticleMedical oncology (Northwood, London, England)2021
Identification of the role of mono-ADP-ribosylation in colorectal cancer by integrated transcriptome analysis.
Article in Medical oncology (Northwood, London, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Our previous study clarified the carcinogenic properties of arginine-specific mono-ADP-ribosyltransferase 1 (ART1), which results in a critical post-translational modification that changes the structure and function of proteins and is widely involved in important processes. This study provides, for the first time, a comprehensive transcriptomic analysis of colorectal cancer cells with ART1 silencing by Illumina RNA-Seq and related verification experiments. Lentiviral infection was used to construct a CT-26 cell line with stable knockdown of the ART1 gene, and a whole transcriptome sequencing technique was performed to identify differentially expressed genes (DEGs). GO and KEGG classification/enrichment analyses and verification experiments were performed to determine the role of ART1 in the progression of colorectal cancer. A total of 5552 DEGs, GO functions and KEGG pathways with the highest enrichment, various SNPs, and diverse splicing patterns were identified. Importantly, knockdown of ART1 affected the splicing of certain key genes related to tumor cell growth and downregulated the expression of the key gene PTBP1 for alternative splicing. The overall attenuation of the endoplasmic reticulum unfolded protein response (UPR) signaling pathway caused by the inhibition of mono-ADP-ribosylation of GRP78 could disrupt UPR signaling, leading to the occurrence of apoptosis to impede tumorigenesis. ART1, which is clustered in organelles, may promote the development of colorectal cancer by participating in a variety of new mechanisms, including endoplasmic reticulum stress regulation and alternative splicing, and may be a good clinical drug target for targeted therapy of CRC.
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