PXD005751

PXD005751 is an original dataset announced via ProteomeXchange.

Title	Muscle stems cell LC-MS
Description	Abstract Hippo pathway downstream effectors Yap and Taz play key roles in cell proliferation and regeneration, regulating gene expression especially via interaction with Tead transcription factors. To investigate their role in skeletal muscle stem cells, we analysed Taz in vivo and ex vivo in comparison to Yap. Taz was expressed in activated satellite cells. siRNA knockdown or constitutive expression of wildtype or constitutively active TAZ mutants showed that TAZ promoted proliferation, a function that was shared with YAP. However, at later stages of myogenesis, TAZ also enhanced myogenic differentiation of myoblasts, whereas YAP inhibits such differentiation. Functionally, while muscle growth was mildly affected in Taz (gene symbol Wwtr1-/-) knockout mice, there were no overt effect on regeneration. However, conditional knockout of Yap in satellite cells of Pax7Cre-ERT2/+ : Yapflox/flox : Rosa26Lacz mice produced a marked regeneration deficit. To identify potential mechanisms, microarray analysis showed many common Taz/Yap targets, but Taz also regulates some genes independently of Yap, including myogenic genes such as Pax7, Myf5 and Myod1. Proteomic analysis of Yap/Taz revealed many common binding partners, but Taz also interacts with proteins distinct from Yap, that are mainly involved in myogenesis and aspects of cytoskeleton organization. Neither TAZ nor YAP bind members of the Wnt destruction complex but both extensively changed expression of Wnt and Wnt-cross talking genes with known roles in myogenesis. Finally, TAZ operates through Tead4 to enhance myogenic differentiation. In summary, Taz and Yap have overlapping functions in promoting myoblast proliferation but Taz then switches to promote myogenic differentiation.
HostingRepository	PRIDE
AnnounceDate	2017-06-13
AnnouncementXML	Submission_2017-06-13_08:05:00.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	David Matallanas
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	monohydroxylated residue
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2017-01-20 04:02:39	ID requested
⏵ 1	2017-06-13 08:05:02	announced

Sun C, De Mello V, Mohamed A, Ortuste Quiroga HP, Garcia-Munoz A, Al Bloshi A, Tremblay AM, von Kriegsheim A, Collie-Duguid E, Vargesson N, Matallanas D, Wackerhage H, Zammit PS, Common and Distinctive Functions of the Hippo Effectors Taz and Yap in Skeletal Muscle Stem Cell Function. Stem Cells, 35(8):1958-1972(2017) [pubmed]

curator keyword: Biological

submitter keyword: muscle, YAP, TAZ

David Matallanas
contact affiliation	Systems Biology Ireland, School of Medicine Conway Institute; Belfield; Dublin 4; Ireland.
contact email	david.gomez@ucd.ie
lab head
David Matallanas
contact affiliation	Systems Biology Ireland, University College Dublin
contact email	david.gomez@ucd.ie
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD005751
     1. Label: PRIDE project
     2. Name: Muscle stems cell LC-MS