Large tumor suppressor kinase 1 (LATS1) is an enzyme that in humans is encoded by the LATS1gene.[5][6][7]
It has been associated with the Hippo signaling pathway, where it phosphorylates YAP and TAZ to inactivate their function.[8]
The protein encoded by this gene is a putative serine/threonine kinase that localizes to the mitotic apparatus and complexes with cell cycle controller CDC2 kinase in early mitosis. The protein is phosphorylated in a cell-cycle dependent manner, with late prophase phosphorylation remaining through metaphase. The N-terminal region of the protein binds CDC2 to form a complex showing reduced histone H1 kinase activity, indicating a role as a negative regulator of CDC2/cyclin A. In addition, the C-terminal kinase domain binds to its own N-terminal region, suggesting potential negative regulation through interference with complex formation via intramolecular binding. Biochemical and genetic data suggest a role as a tumor suppressor. This is supported by studies in knockout mice showing development of soft-tissue sarcomas, ovarian stromal cell tumors and a high sensitivity to carcinogenic treatments.[7]
Xu T, Wang W, Zhang S, et al. (1995). "Identifying tumor suppressors in genetic mosaics: the Drosophila lats gene encodes a putative protein kinase". Development. 121 (4): 1053–63. doi:10.1242/dev.121.4.1053. PMID7743921.
St John MA, Tao W, Fei X, et al. (1999). "Mice deficient of Lats1 develop soft-tissue sarcomas, ovarian tumours and pituitary dysfunction". Nat. Genet. 21 (2): 182–6. doi:10.1038/5965. PMID9988269. S2CID11882936.
Morisaki T, Hirota T, Iida S, et al. (2002). "WARTS tumor suppressor is phosphorylated by Cdc2/cyclin B at spindle poles during mitosis". FEBS Lett. 529 (2–3): 319–24. doi:10.1016/S0014-5793(02)03360-4. PMID12372621. S2CID45272429.
Brill LM, Salomon AR, Ficarro SB, et al. (2004). "Robust phosphoproteomic profiling of tyrosine phosphorylation sites from human T cells using immobilized metal affinity chromatography and tandem mass spectrometry". Anal. Chem. 76 (10): 2763–72. doi:10.1021/ac035352d. PMID15144186.
Yang X, Yu K, Hao Y, et al. (2004). "LATS1 tumour suppressor affects cytokinesis by inhibiting LIMK1". Nat. Cell Biol. 6 (7): 609–17. doi:10.1038/ncb1140. PMID15220930. S2CID20493738.
Chan EH, Nousiainen M, Chalamalasetty RB, et al. (2005). "The Ste20-like kinase Mst2 activates the human large tumor suppressor kinase Lats1". Oncogene. 24 (12): 2076–86. doi:10.1038/sj.onc.1208445. PMID15688006. S2CID27285160.
Takahashi Y, Miyoshi Y, Takahata C, et al. (2005). "Down-regulation of LATS1 and LATS2 mRNA expression by promoter hypermethylation and its association with biologically aggressive phenotype in human breast cancers". Clin. Cancer Res. 11 (4): 1380–5. doi:10.1158/1078-0432.CCR-04-1773. PMID15746036. S2CID23415582.
Kuninaka S, Nomura M, Hirota T, et al. (2005). "The tumor suppressor WARTS activates the Omi / HtrA2-dependent pathway of cell death". Oncogene. 24 (34): 5287–98. doi:10.1038/sj.onc.1208682. PMID16007220. S2CID25678521.