LKB1 Inhibitors

Common LKB1 Inhibitors include, but are not limited to AICAR CAS 2627-69-2, 1,1-Dimethylbiguanide, Hydrochloride CAS 1115-70-4, U-0126 CAS 109511-58-2, Rapamycin CAS 53123-88-9 and 2-Deoxy-D-glucose CAS 154-17-6.

Liver kinase B1 (LKB1), also known as serine/threonine kinase 11 (STK11), is an evolutionarily conserved protein kinase that acts as a central regulator of cell metabolism, growth, polarity, and survival. LKB1 is a master kinase that phosphorylates and activates a family of 14 related protein kinases, known as AMP-activated protein kinase (AMPK) family members. Once activated, these kinases regulate various cellular processes, including energy metabolism, cell cycle progression, and autophagy. The function of LKB1 is tightly regulated by its interaction with other proteins, including STRAD (a pseudokinase) and MO25 (a scaffold protein). Together, they form a heterotrimeric complex that is necessary for the full activation and function of LKB1. Given its central role in orchestrating cellular responses to energy stress and nutrient availability, LKB1 acts as a metabolic sensor, ensuring that cellular activities are attuned to the available energy resources.

Inhibitors of LKB1 are molecules specifically designed to target and disrupt the activity or function of the LKB1 kinase. These inhibitors can bind to the active or allosteric sites of LKB1, preventing its interaction with substrates or other regulatory proteins. Alternatively, some inhibitors might interfere with the formation of the LKB1-STRAD-MO25 complex, thus preventing the activation of LKB1. The development and study of LKB1 inhibitors provide a deeper understanding of the intricate network of signaling pathways governed by this kinase.