5'-AMP-activated protein kinase catalytic subunit alpha mRNA 3'-untranslated region (AMPKα mRNA 3'-UTR)

The 3'-untranslated region (3'-UTR) of the AMPKα mRNA is a critical regulatory segment that controls the expression of the catalytic alpha subunit of AMP-activated protein kinase (AMPK). AMPK serves as a master regulator of cellular energy homeostasis, activating catabolic pathways to generate ATP while inhibiting anabolic processes during energy stress (Hardie et al., 2012, Genes & Development). The 3'-UTR contains specific binding sites for microRNAs, such as miR-33 and miR-451, which post-transcriptionally repress AMPK expression by inducing mRNA degradation or inhibiting translation (Davalos et al., 2011, Nature; Godlewski et al., 2010, Cancer Research). In metabolic diseases like obesity and type 2 diabetes, the overexpression of certain microRNAs can lead to pathologically low levels of AMPK, exacerbating insulin resistance and lipid accumulation. Consequently, the AMPKα mRNA 3'-UTR is an emerging therapeutic target for RNA-based interventions, including antisense oligonucleotides and microRNA modulators, designed to restore AMPK activity. Beyond metabolism, this regulatory region is also studied in oncology, where AMPK acts as a metabolic tumor suppressor that can be silenced by microRNAs in the tumor microenvironment.

Other names

PRKAA1 mRNA 3'-UTRPRKAA2 mRNA 3'-UTR3'-untranslated region of AMPK alphaAMP-activated protein kinase alpha subunit mRNA 3'-UTRAMPK alpha 3'-UTR

Modulation of AMPK protein expression through the regulation of mRNA stability or translation efficiency, often by blocking or mimicking microRNA binding to the 3'-UTR to either increase or decrease AMPK levels.