Journal
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fcell.2021.623829
Keywords
ciliopathies; Alstromsyndrome (AS); ALMS1; primary cilium; TGF-beta/BMP signaling; ciliary length; ciliary morphology; hTERT RPE-1 cells
Categories
Funding
- Registro Espanol de los Sindromes de Wolfram, Bardet-Biedl y Alstrom (REWBA)
- European Union Rare Diseases Registry for Wolfram syndrome
- Alstrom Europe group
- (Asociacion Espanola del Sindrome de Alstrom)
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This study reveals that ALMS1 depletion affects ciliary morphology and TGF-beta/BMP signaling, shedding light on its role in primary cilia function and cellular signaling, potentially linking it to the pathology of Alstrom syndrome.
In this study, we aimed to evaluate the role of ALMS1 in the morphology of primary cilia and regulation of cellular signaling using a knockdown model of the hTERT-RPE1 cell line. ALMS1 depletion resulted in the formation of longer cilia, which often displayed altered morphology as evidenced by extensive twisting and bending of the axoneme. Transforming growth factor beta/bone morphogenetic protein (TGF-beta/BMP) signaling, which is regulated by primary cilia, was similarly affected by ALMS1 depletion as judged by reduced levels of TGF beta-1-mediated activation of SMAD2/3. These results provide novel information on the role of ALMS1 in the function of primary cilia and processing of cellular signaling, which when aberrantly regulated may underlie Alstrom syndrome.
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