Lysosomes Dysfunction Causes Mitophagy Impairment in PBMCs of Sporadic ALS Patients.

Autor: Bordoni M; Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy., Pansarasa O; Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy., Scarian E; Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy.; Department of Brain and Behavioral Sciences, University of Pavia, 27100 Pavia, Italy., Cristofani R; Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Dipartimento di Eccellenza 2018-2022, Università Degli Studi di Milano, 20133 Milano, Italy., Leone R; Casa di Cura Ars Medica S.p.a, 00191 Rome, Italy., Fantini V; Laboratory of Neurobiology and Neurogenetic, Golgi-Cenci Foundation, 20081 Abbiategrasso, Italy., Garofalo M; Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy., Diamanti L; Neuroncology Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy., Bernuzzi S; Immunohematological and Transfusional Service and Centre of Transplantation Immunology, IRCCS 'San Matteo Foundation', 27100 Pavia, Italy., Gagliardi S; Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy., Carelli S; Department of Biomedical and Clinical Sciences 'L. Sacco', University of Milan, 20157 Milan, Italy.; Pediatric Clinical Research Centre Fondazione 'Romeo ed Enrica Invernizzi', University of Milano, 20157 Milan, Italy., Poletti A; Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Dipartimento di Eccellenza 2018-2022, Università Degli Studi di Milano, 20133 Milano, Italy., Cereda C; Genomic and Post-Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy.
Jazyk: angličtina
Zdroj: Cells [Cells] 2022 Apr 09; Vol. 11 (8). Date of Electronic Publication: 2022 Apr 09.
DOI: 10.3390/cells11081272
Abstrakt: Mitochondria alterations are present in tissues derived from patients and animal models, but no data are available for peripheral blood mononuclear cells (PBMCs) of ALS patients. This work aims to investigate mitophagy in PBMCs of sporadic (sALS) patients and how this pathway can be tuned by using small molecules. We found the presence of morphologically atypical mitochondria by TEM and morphological abnormalities by MitoTracker™. We found a decreased number of healthy mitochondria in sALS PBMCs and an impairment of mitophagy with western blot and immunofluorescence. After rapamycin treatment, we found a higher increase in the LC3 marker in sALS PBMCs, while after NH4Cl treatment, we found a lower increase in the LC3 marker. Finally, mTOR-independent autophagy induction with trehalose resulted in a significant decrease in the lysosomes level sALS PBMCs. Our data suggest that the presence of morphologically altered mitochondria and an inefficient turnover of damaged mitochondria in PBMCs of sALS patients rely on the impairment of the mitophagy pathway. We also found that the induction of the mTOR-independent autophagy pathway leads to a decrease in lysosomes level, suggesting a more sensitivity of sALS PBMCs to trehalose. Such evidence suggests that trehalose could represent an effective treatment for ALS patients.
Databáze: MEDLINE
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