Tumor protein p53-inducible nuclear protein 1 mRNA 3' untranslated region (TP53INP1 mRNA 3'UTR)

The Tumor protein p53-inducible nuclear protein 1 (TP53INP1) mRNA 3' untranslated region (3'UTR) is a critical regulatory segment of the messenger RNA that controls the expression of the TP53INP1 protein. TP53INP1 is a stress-induced protein that functions as a dual regulator of transcription and autophagy, promoting cell cycle arrest and apoptosis in response to DNA damage and oxidative stress (UniProt, P53INP1_HUMAN). The 3'UTR is highly significant in oncology because it contains multiple conserved binding sites for microRNAs (miRNAs), most notably the oncogenic miR-155, which suppresses TP53INP1 expression to promote tumor cell survival and proliferation (PubMed, PMID: 19244112). In various malignancies, such as pancreatic and breast cancers, the downregulation of TP53INP1 via miRNA targeting of its 3'UTR is a hallmark of aggressive disease and chemoresistance. Therapeutic strategies targeting this region aim to restore TP53INP1 levels by using miRNA antagomirs or antisense oligonucleotides (ASOs) to block inhibitory interactions. Understanding the regulatory landscape of the TP53INP1 mRNA 3'UTR is essential for developing precision medicines that can reactivate tumor-suppressive pathways and modulate cellular stress responses.

Other names

TP53INP1 3'UTRSIP 3'UTRp53-inducible nuclear protein 1 mRNA 3'UTRTumor protein p53-inducible nuclear protein 1 3' untranslated regionTP53INP1 3-prime UTR

MicroRNA-mediated gene silencing through sequence-specific binding to the 3'UTR, leading to mRNA degradation or translational repression. Therapeutic intervention involves using antagomirs to block oncogenic miRNA binding or ASOs to modulate mRNA stability.