Abstract:
:The mammalian Hippo pathway comprises mammalian Ste20-like kinases (MST1/2) and large tumor suppressor kinases (LATS1/2). LATS1/2, which are activated by MST1/2, phosphorylate a transcriptional co-activator, yes-associated protein (YAP), and induce the recruitment of YAP by 14-3-3 to cytoplasm, so that the TEAD-dependent gene transcriptions are turned off. Although the core components of the Hippo pathway are well conserved in metazoans, it has been discussed that Caenorhabditis elegans lacks YAP ortholog, we found that F13E6.4 gene encodes a protein that shows sequence similarities to YAP in the N-terminal TEAD-binding domain and in the WW domain. We designated this gene as yap-1. YAP-1 is widely expressed in various cells such as epithelial cells, muscles, hypodermal cells, gonadal sheath cells, spermatheca, and hypodermal cells. YAP-1 is distributed in cytoplasm and nuclei. wts-1 (LATS ortholog) and ftt-2 (14-3-3 ortholog) knockdowns cause nuclear accumulation of YAP-1, supporting that the subcellular localization of YAP-1 is regulated in a similar way as that of YAP. Heat shock also causes the nuclear accumulation of YAP-1 but after heat shock, YAP-1 translocates to cytoplasm. Knockdowns of DAF-21 (HSP90 ortholog) and HSF-1block the nuclear export of YAP-1 during this recovery. YAP-1 overexpression is beneficial for thermotolerance, whereas YAP-1 hyperactivity induced by wts-1 and ftt-2 knockdowns is deleterious on thermal response and yap-1 deficiency promotes health aging. In short, YAP-1 partially shares basal characters with mammalian YAP and plays a role in thermal stress response and healthy aging.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Iwasa H,Maimaiti S,Kuroyanagi H,Kawano S,Inami K,Timalsina S,Ikeda M,Nakagawa K,Hata Ydoi
10.1016/j.yexcr.2013.01.020subject
Has Abstractpub_date
2013-04-15 00:00:00pages
931-45issue
7eissn
0014-4827issn
1090-2422pii
S0014-4827(13)00038-4journal_volume
319pub_type
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