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OFD1蛋白是选择性自噬中的一个新角色:纤毛/自噬谜题的又一块拼图。

The OFD1 protein is a novel player in selective autophagy: another tile to the cilia/autophagy puzzle.

作者信息

Morleo Manuela, Franco Brunella

机构信息

Telethon Institute of Genetics and Medicine (TIGEM), Via Campi Flegrei, 34, 80078, Pozzuoli, Naples, Italy.

Medical Genetics, Department of Translational Medical Sciences, University of Naples Federico II, Via S Pansini 5, 80131, Naples, Italy.

出版信息

Cell Stress. 2021 Feb 17;5(3):33-36. doi: 10.15698/cst2021.03.244.


DOI:10.15698/cst2021.03.244
PMID:33681704
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7921851/
Abstract

The autophagy-lysosomal pathway is one of the main degradative routes which cells use to balance sources of energy. A number of proteins orchestrate the formation of autophagosomes, membranous organelles instrumental in autophagy. Selective autophagy, involving the recognition and removal of specific targets, is mediated by autophagy receptors, which recognize cargos and the autophagosomal membrane protein LC3 for lysosomal degradation. Recently, bidirectional crosstalk has emerged between autophagy and primary cilia, microtubule-based sensory organelles extending from cells and anchored by the basal body, derived from the mother centriole of the centrosome. The molecular mechanisms underlying the direct role of autophagic proteins in cilia biology and, conversely, the impact of this organelle in autophagy remains elusive. Recently, we uncovered the molecular mechanism by which the centrosomal/basal body protein OFD1 controls the LC3-mediated autophagic cascade. In particular, we demonstrated that OFD1 acts as a selective autophagy receptor by regulating the turnover of unc-51-like kinase (ULK1) complex, which plays a crucial role in the initiation steps of autophagosome biogenesis. Moreover, we showed that patients with a genetic condition caused by mutations in and associated with cilia dysfunction, display excessive autophagy and we demonstrated that autophagy inhibition significantly ameliorates the renal cystic phenotype in a conditional mouse model recapitulating the features of the disease (Morleo et al. 2020, EMBO J, doi: 10.15252/embj.2020105120). We speculate that abnormal autophagy may underlie some of the clinical manifestations observed in the disorders ascribed to cilia dysfunction.

摘要

自噬-溶酶体途径是细胞用于平衡能量来源的主要降解途径之一。许多蛋白质共同协调自噬体的形成,自噬体是自噬过程中起重要作用的膜性细胞器。选择性自噬涉及特定靶标的识别和清除,由自噬受体介导,自噬受体识别货物和自噬体膜蛋白LC3以便进行溶酶体降解。最近,自噬与初级纤毛之间出现了双向串扰,初级纤毛是从细胞伸出并由源自中心体母中心粒的基体锚定的基于微管的感觉细胞器。自噬蛋白在纤毛生物学中的直接作用以及相反地,该细胞器在自噬中的影响的分子机制仍然难以捉摸。最近,我们发现了中心体/基体蛋白OFD1控制LC3介导的自噬级联反应的分子机制。特别是,我们证明OFD1通过调节unc-51样激酶(ULK1)复合物的周转而作为选择性自噬受体,ULK1复合物在自噬体生物发生的起始步骤中起关键作用。此外,我们表明,由与纤毛功能障碍相关的突变引起的遗传病患者表现出过度自噬,并且我们证明在重现该疾病特征的条件性小鼠模型中,自噬抑制可显著改善肾囊肿表型(Morleo等人,2020年,《欧洲分子生物学组织杂志》,doi:10.15252/embj.2020105120)。我们推测异常自噬可能是归因于纤毛功能障碍的疾病中观察到的一些临床表现的基础。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9cbf/7921851/ed179b99d5b2/ces-05-033-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9cbf/7921851/ed179b99d5b2/ces-05-033-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9cbf/7921851/ed179b99d5b2/ces-05-033-g001.jpg

相似文献

[1]
The OFD1 protein is a novel player in selective autophagy: another tile to the cilia/autophagy puzzle.

Cell Stress. 2021-2-17

[2]
Regulation of autophagosome biogenesis by OFD1-mediated selective autophagy.

EMBO J. 2021-2-15

[3]
Autophagy promotes primary ciliogenesis by removing OFD1 from centriolar satellites.

Nature. 2013-10-2

[4]
Self-eating to remove cilia roadblock.

Autophagy. 2013-12-12

[5]
The role of OFD1 in selective autophagy.

Mol Cell Oncol. 2021-3-31

[6]
Myosin VI regulates ciliogenesis by promoting the turnover of the centrosomal/satellite protein OFD1.

EMBO Rep. 2022-2-3

[7]
The centrosomal/basal body protein OFD1 is required for microtubule organization and cell cycle progression.

Tissue Cell. 2020-4-21

[8]
The molecular basis of oral-facial-digital syndrome, type 1.

Am J Med Genet C Semin Med Genet. 2009-11-15

[9]
The TBC1D31/praja2 complex controls primary ciliogenesis through PKA-directed OFD1 ubiquitylation.

EMBO J. 2021-5-17

[10]
Crosstalk between cilia and autophagy: implication for human diseases.

Autophagy. 2023-1

引用本文的文献

[1]
Conservation of OFD1 Protein Motifs: Implications for Discovery of Novel Interactors and the OFD1 Function.

Int J Mol Sci. 2025-1-29

[2]
The function of the ATG8 in the cilia and cortical microtubule maintenance of Euplotes amieti.

Protoplasma. 2024-11

[3]
IK is essentially involved in ciliogenesis as an upstream regulator of oral-facial-digital syndrome ciliopathy gene, ofd1.

Cell Biosci. 2023-10-28

[4]
Quantitative phosphoproteomic analysis reveals unique cAMP signaling pools emanating from AC2 and AC6 in human airway smooth muscle cells.

Front Physiol. 2023-2-28

[5]
Autistic Behavior as Novel Clinical Finding in OFD1 Syndrome.

Genes (Basel). 2023-1-27

[6]
Primary Cilia Influence Progenitor Function during Cortical Development.

Cells. 2022-9-16

[7]
Crosstalk between cilia and autophagy: implication for human diseases.

Autophagy. 2023-1

[8]
OFD1: One gene, several disorders.

Am J Med Genet C Semin Med Genet. 2022-3

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