NUAK family SNF1-like kinase 1 also known as AMPK-related protein kinase 5 (ARK5) is an enzyme that in humans is encoded by the NUAK1gene.
Function
Acts as a regulator of cellular senescence and cellular ploidy by mediating phosphorylation of 'Ser-464' of LATS1, thereby controlling its stability. Controls cell adhesion by regulating activity of the myosin protein phosphatase 1 (PP1) complex.
Clinical significance
ARK5 is important in tumor malignancy and invasiveness.
Research findings
ARK5 is often overexpressed in multiple myeloma cell lines.
ARK5 promotes tumor cell survival under regulation by Akt.
ARK5 increases MT1-MMP production. (MT1-MMP activates MMP-2 and MMP-9 which are involved in tumor metastasis.)
↑Suzuki A, Kusakai G, Kishimoto A, Lu J, Ogura T, Esumi H (Sep 2003). "ARK5 suppresses the cell death induced by nutrient starvation and death receptors via inhibition of caspase 8 activation, but not by chemotherapeutic agents or UV irradiation". Oncogene. 22 (40): 6177–82. doi:10.1038/sj.onc.1206899. PMID13679856. S2CID20975883.
↑Deepak Perumal, etal. (2014). "Abstract 1324: Dual targeting of CDK4 and ARK5 using a novel kinase inhibitor ON123300 is effective in vitro and in vivo in Multiple Myeloma". Cancer Research. 74 (19_Supplement): 1324. doi:10.1158/1538-7445.AM2014-1324.
Kusakai G, Suzuki A, Ogura T, etal. (2005). "Strong association of ARK5 with tumor invasion and metastasis". J. Exp. Clin. Cancer Res. 23 (2): 263–8. PMID15354411.
Al-Hakim AK, Göransson O, Deak M, etal. (2006). "14-3-3 cooperates with LKB1 to regulate the activity and localization of QSK and SIK". J. Cell Sci. 118 (Pt 23): 5661–73. doi:10.1242/jcs.02670. PMID16306228. S2CID17404931.