Myocardin-related transcription factor and serum response factor regulate cilium turnover by both transcriptional and local mechanisms.
cell biology
functional aspects of cell biology
organizational aspects of cell biology
Journal
iScience
ISSN: 2589-0042
Titre abrégé: iScience
Pays: United States
ID NLM: 101724038
Informations de publication
Date de publication:
23 Jul 2021
23 Jul 2021
Historique:
received:
12
07
2020
revised:
02
11
2020
accepted:
15
06
2021
entrez:
19
7
2021
pubmed:
20
7
2021
medline:
20
7
2021
Statut:
epublish
Résumé
Turnover of the primary cilium (PC) is critical for proliferation and tissue homeostasis. Each key component of the PC resorption machinery, the HEF1/Aurora kinase A (AurA)/HDAC6 pathway harbors cis-elements potentially targeted by the transcriptional co-activator myocardin-related transcription factor (MRTF) and/or its partner serum response factor (SRF). Thus we investigated if MRTF and/or SRF regulate PC turnover. Here we show that (1) both MRTF and SRF are indispensable for serum-induced PC resorption, and (2) they act via both transcriptional and local mechanisms. Intriguingly, MRTF and SRF are present in the basal body and/or the PC, and serum facilitates ciliary MRTF recruitment. MRTF promotes the stability and ciliary accumulation of AurA and facilitates SRF phosphorylation. Ciliary SRF interacts with AurA and HDAC6. MRTF also inhibits ciliogenesis. It interacts with and is required for the correct localization of the ciliogenesis modulator CEP290. Thus, MRTF and SRF are critical regulators of PC assembly and/or disassembly, acting both as transcription factors and as PC constituents.
Identifiants
pubmed: 34278253
doi: 10.1016/j.isci.2021.102739
pii: S2589-0042(21)00707-0
pmc: PMC8261663
doi:
Types de publication
Journal Article
Langues
eng
Pagination
102739Informations de copyright
© 2021 The Authors.
Déclaration de conflit d'intérêts
The authors declare no competing interest.
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