Reversible induction of mitophagy by an optogenetic bimodular system.

Abstract:

:Autophagy-mediated degradation of mitochondria (mitophagy) is a key process in cellular quality control. Although mitophagy impairment is involved in several patho-physiological conditions, valuable methods to induce mitophagy with low toxicity in vivo are still lacking. Herein, we describe a new optogenetic tool to stimulate mitophagy, based on light-dependent recruitment of pro-autophagy protein AMBRA1 to mitochondrial surface. Upon illumination, AMBRA1-RFP-sspB is efficiently relocated from the cytosol to mitochondria, where it reversibly mediates mito-aggresome formation and reduction of mitochondrial mass. Finally, as a proof of concept of the biomedical relevance of this method, we induced mitophagy in an in vitro model of neurotoxicity, fully preventing cell death, as well as in human T lymphocytes and in zebrafish in vivo. Given the unique features of this tool, we think it may turn out to be very useful for a wide range of both therapeutic and research applications.

journal_name

Nat Commun

journal_title

Nature communications

authors

D'Acunzo P,Strappazzon F,Caruana I,Meneghetti G,Di Rita A,Simula L,Weber G,Del Bufalo F,Dalla Valle L,Campello S,Locatelli F,Cecconi F

doi

10.1038/s41467-019-09487-1

subject

Has Abstract

pub_date

2019-04-04 00:00:00

pages

1533

issue

1

issn

2041-1723

pii

10.1038/s41467-019-09487-1

journal_volume

10

pub_type

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