Prosurvival long noncoding RNA PINCR regulates a subset of p53 targets in human colorectal cancer cells by binding to Matrin 3
نویسندگان
چکیده
Thousands of long noncoding RNAs (lncRNAs) have been discovered, yet the function of the vast majority remains unclear. Here, we show that a p53-regulated lncRNA which we named PINCR (p53-induced noncoding RNA), is induced ~100-fold after DNA damage and exerts a prosurvival function in human colorectal cancer cells (CRC) in vitro and tumor growth in vivo. Targeted deletion of PINCR in CRC cells significantly impaired G1 arrest and induced hypersensitivity to chemotherapeutic drugs. PINCR regulates the induction of a subset of p53 targets involved in G1 arrest and apoptosis, including BTG2, RRM2B and GPX1. Using a novel RNA pulldown approach that utilized endogenous S1-tagged PINCR, we show that PINCR associates with the enhancer region of these genes by binding to RNA-binding protein Matrin 3 that, in turn, associates with p53. Our findings uncover a critical prosurvival function of a p53/PINCR/Matrin 3 axis in response to DNA damage in CRC cells.
منابع مشابه
Study of Long Noncoding RNA FER1L4 and RB1, as Its Competing Endogenous RNA Network Target Gene, in Breast Cancer
Introduction: Breast cancer is the second most common cause of cancer-related death among females, which requires an exploration for markers to propose a more specific categorization of this cancer. Long noncoding RNAs (lncRNAs), the main subset of noncoding transcripts, are involved in tumorigenic processes. In this study, we investigated the expression of the fer-1–like family member 4 (FER...
متن کاملLinkage between Large intergenic non-coding RNA regulator of reprogramming and Stemness State in Samples with Helicobacter pylori Infection of Gastric Cancer Cells
Background: Long noncoding RNAs (lncRNAs), as non-protein coding transcripts, play key roles in tumor progression and stemness state in many malignancies, as their aberrant expression has been found in gastric cancer (GC) as one of the most common cancer worldwide. LINC-ROR (large intergenic noncoding RNA regulator of reprogramming) identified as an involved lncRNA in human malignancies, howeve...
متن کاملEffect of citric acid on p53 and p21 genes expression of the human colorectal Adenocarcinoma cell line
Background & Aim: Despite the advances in treatment of colorectal adenocarcinoma patients continue to have low survival. Citric acid is considered as a physiological inhibitor of enzymes involved in glycolysis pathway to remove cancer cells. The p53 and p21 gene products are involved in cell removal due to their pro-apoptotic properties. In this study, the effect of citric acid on p53 and p21 g...
متن کاملLong Non-coding RNA ZEB1-AS1 Promotes Tumorigenesis and Metastasis in Colorectal Cancer
Emerging evidence implicates that a large fraction of human genome was transcribed but the transcripts known as long non coding RNA are not translated into proteins. They are contributing in different cellular processes, including cellular proliferation and apoptosis. LncRNAs were found to play critical roles in many diseases and act as key regulators in malignancies. In this study, we investig...
متن کاملP-60: Nano-Particle TiO2 Enhances Apoptosis in Testicular Tissue; Evidence for p53, bcl2, cyp19 Genes Expression
Background: Nano-particle Titanium Dioxide (TiO2) is a noncombustible, odorless powder that is widely used in different fields of industries. Previous reports showed that chronic exposure to TiO2 adversely impacts the testicular tissue and down-regulates the antioxidant capacity and down-regulates the endocrine status of the testicles. Present study was designed in order to identify the role of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 6 شماره
صفحات -
تاریخ انتشار 2017