Okadaic Acid: A Tool to Study the Hippo Pathway

Mammalian Ste20-like kinases 1 and 2 (MST1 and MST2) are activated in NIH3T3 cells exposed to okadaic acid. The Hippo pathway is a newly emerging signaling that functions as a tumor suppressor. MST1 and MST2 work as core kinases of the Hippo pathway and their activities depend on the autophosphoryla...

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Main Authors: Yutaka Hata, Sainawaer Maimaiti, Shikshya Timalsina
Format: Article
Language:English
Published: MDPI AG 2013-03-01
Series:Marine Drugs
Subjects:
Online Access:http://www.mdpi.com/1660-3397/11/3/896
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author Yutaka Hata
Sainawaer Maimaiti
Shikshya Timalsina
author_facet Yutaka Hata
Sainawaer Maimaiti
Shikshya Timalsina
author_sort Yutaka Hata
collection DOAJ
description Mammalian Ste20-like kinases 1 and 2 (MST1 and MST2) are activated in NIH3T3 cells exposed to okadaic acid. The Hippo pathway is a newly emerging signaling that functions as a tumor suppressor. MST1 and MST2 work as core kinases of the Hippo pathway and their activities depend on the autophosphorylation, which is negatively regulated by protein phosphatase 2A (PP2A). Okadaic acid has been frequently used to enhance the phosphorylation of MST1 and MST2 and to trigger the activation of the Hippo pathway. However other components of the Hippo pathway could also be targets of okadaic acid. In this review we first briefly summarize the molecular architecture of the Hippo pathway for the reference of researchers outside the field. We explain how MST kinases are regulated by PP2A and how okadaic acid activates MST2. Thereafter we discuss which components of the Hippo pathway are candidate substrates of protein phosphatases and which points we need to consider in the usage of okadaic acid to study the Hippo pathway.
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spelling doaj.art-f910307adeed4d60b292de93b3df35452022-12-22T04:23:46ZengMDPI AGMarine Drugs1660-33972013-03-0111389690210.3390/md11030896Okadaic Acid: A Tool to Study the Hippo PathwayYutaka HataSainawaer MaimaitiShikshya TimalsinaMammalian Ste20-like kinases 1 and 2 (MST1 and MST2) are activated in NIH3T3 cells exposed to okadaic acid. The Hippo pathway is a newly emerging signaling that functions as a tumor suppressor. MST1 and MST2 work as core kinases of the Hippo pathway and their activities depend on the autophosphorylation, which is negatively regulated by protein phosphatase 2A (PP2A). Okadaic acid has been frequently used to enhance the phosphorylation of MST1 and MST2 and to trigger the activation of the Hippo pathway. However other components of the Hippo pathway could also be targets of okadaic acid. In this review we first briefly summarize the molecular architecture of the Hippo pathway for the reference of researchers outside the field. We explain how MST kinases are regulated by PP2A and how okadaic acid activates MST2. Thereafter we discuss which components of the Hippo pathway are candidate substrates of protein phosphatases and which points we need to consider in the usage of okadaic acid to study the Hippo pathway.http://www.mdpi.com/1660-3397/11/3/896Hippo pathwaykinaseokadaic acidphosphatase
spellingShingle Yutaka Hata
Sainawaer Maimaiti
Shikshya Timalsina
Okadaic Acid: A Tool to Study the Hippo Pathway
Marine Drugs
Hippo pathway
kinase
okadaic acid
phosphatase
title Okadaic Acid: A Tool to Study the Hippo Pathway
title_full Okadaic Acid: A Tool to Study the Hippo Pathway
title_fullStr Okadaic Acid: A Tool to Study the Hippo Pathway
title_full_unstemmed Okadaic Acid: A Tool to Study the Hippo Pathway
title_short Okadaic Acid: A Tool to Study the Hippo Pathway
title_sort okadaic acid a tool to study the hippo pathway
topic Hippo pathway
kinase
okadaic acid
phosphatase
url http://www.mdpi.com/1660-3397/11/3/896
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