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.[5][6][7]
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.[8]
Clinical significance
ARK5 is important in tumor malignancy and invasiveness.[9]
Research findings
ARK5 is often overexpressed in multiple myeloma cell lines.[10][11]
ARK5 promotes tumor cell survival under regulation by Akt.[9]
^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, et al. (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.
Suzuki A, Kusakai G, Kishimoto A, et al. (2004). "Regulation of caspase-6 and FLIP by the AMPK family member ARK5". Oncogene. 23 (42): 7067–75. doi:10.1038/sj.onc.1207963. PMID15273717. S2CID13635036.
Kusakai G, Suzuki A, Ogura T, et al. (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, et al. (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.