The binding of LARP6 and DNAAF6 in biomolecular condensates influences ciliogenesis of multiciliated cells.

Autor:	Earwood R; Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, USA., Ninomiya H; Department of Cell Biology, Nagoya City University, Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan., Wang H; Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, USA., Shimada IS; Department of Cell Biology, Nagoya City University, Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan., Stroud M; Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, USA., Perez D; Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, USA., Uuganbayar U; Department of Cell Biology, Nagoya City University, Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan., Yamada C; Department of Cell Biology, Nagoya City University, Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan., Akiyama-Miyoshi T; Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan., Stefanovic B; Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, USA. Electronic address: branko.stefanovic@med.fsu.edu., Kato Y; Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, USA; Department of Cell Biology, Nagoya City University, Graduate School of Medical Sciences, Mizuho-ku, Nagoya, Japan. Electronic address: kato.41@med.nagoya-cu.ac.jp.
Jazyk:	angličtina
Zdroj:	The Journal of biological chemistry [J Biol Chem] 2024 Jun; Vol. 300 (6), pp. 107373. Date of Electronic Publication: 2024 May 16.
DOI:	10.1016/j.jbc.2024.107373
Abstrakt:	Motile cilia on the cell surface produce fluid flows in the body and abnormalities in motile cilia cause primary ciliary dyskinesia. Dynein axonemal assembly factor 6 (DNAAF6), a causative gene of primary ciliary dyskinesia, was isolated as an interacting protein with La ribonucleoprotein 6 (LARP6) that regulates ciliogenesis in multiciliated cells (MCCs). In MCCs of Xenopus embryos, LARP6 and DNAAF6 were colocalized in biomolecular condensates termed dynein axonemal particles and synergized to control ciliogenesis. Moreover, tubulin alpha 1c-like mRNA encoding α-tubulin protein, that is a major component of ciliary axoneme, was identified as a target mRNA regulated by binding LARP6. While DNAAF6 was necessary for high α-tubulin protein expression near the apical side of Xenopus MCCs during ciliogenesis, its mutant, which abolishes binding with LARP6, was unable to restore the expression of α-tubulin protein near the apical side of MCCs in Xenopus DNAAF6 morphant. These results indicated that the binding of LARP6 and DNAAF6 in dynein axonemal particles regulates highly expressed α-tubulin protein near the apical side of Xenopus MCCs during ciliogenesis. Competing Interests: Conflict of interests The authors declare that they have no conflicts of interest with the contents of this article. (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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