We studied the effect of the mitochondrial calcium-dependent pore (MPT pore) inhibitor alisporivir (5 mg/kg per day for 4 weeks) on the parameters of calcium ion transport and the intensity of mitophagy in mitochondria of the heart and skeletal muscles of dystrophin-deficient C57BL/10ScSn-mdx mice. Alisporivir increased the rate of calcium uptake by skeletal muscle mitochondria of mdx mice, which was accompanied by changes in the level of the MCU and MCUb subunits of the calcium uniporter. At the same time, the intensity of calcium uniport in the heart mitochondria did not change. Alisporivir was found to reduce the expression of Pink1 and Parkin genes regulating the intensity of mitophagy in skeletal muscles of mdx mice, but did not affect the expression of these genes in the heart. This effect of alisporivir was accompanied by fragmentation and a decrease in the mean size of organelles. Possible mitochondrion-related mechanisms of the protective effect of alisporivir on the skeletal muscle and heart cells are discussed.
Similar content being viewed by others
References
Belosludtsev KN, Belosludtseva NV, Mironova GD, Dubinin MV. Mitochondrial Сa2+ transport: mechanisms, molecular structures, and role in cellsю Biochemistry (Moscow). 2019;84(6):593-607. https://doi.org/10.1134/S0006297919060026
Dubinin MV, Starinets VS, Talanov EY, Mikheeva IB, Belosludtseva N.V, Belosludtsev K.N. Alisporivir improves mitochondrial function in skeletal muscle of mdx mice but suppresses mitochondrial dynamics and biogenesis. Int. J. Mol. Sci. 2021;22(18):9780. https://doi.org/10.3390/ijms22189780
Dubinin MV, Starinets VS, Talanov EY, Mikheeva IB, Belosludtseva NV, Serov DA, Tenkov KS, Belosludtseva EV, Belosludtsev KN. Effect of the non-immunosuppressive MPT pore inhibitor alisporivir on the functioning of heart mitochondria in dystrophin-deficient mdx mice. Biomedicines. 2021;9(9):1232. https://doi.org/10.3390/biomedicines9091232
Dubinin MV, Talanov EY, Tenkov KS, Starinets VS, Belosludtseva NV, Belosludtsev KN. The effect of deflazacort treatment on the functioning of skeletal muscle mitochondria in duchenne muscular dystrophy. Int. J. Mol. Sci. 2020;21(22):8763. https://doi.org/10.3390/ijms21228763
Dubinin MV, Talanov EY, Tenkov KS, Starinets VS, Mikheeva IB, Sharapov MG, Belosludtsev KN. Duchenne muscular dystrophy is associated with the inhibition of calcium uniport in mitochondria and an increased sensitivity of the organelles to the calcium-induced permeability transitio. Biochim. Biophys. Acta Mol. Basis Dis. 2020;1866(5):165674. https://doi.org/10.1016/j.bbadis.2020.165674
Giorgi C, Marchi S, Pinton P. The machineries, regulation and cellular functions of mitochondrial calcium. Nat. Rev. Mol. Cell Biol. 2018;19(11):713-730. https://doi.org/10.1038/s41580-018-0052-8
Ignatieva E, Smolina N, Kostareva A, Dmitrieva R. Skeletal muscle mitochondria dysfunction in genetic neuromuscular disorders with cardiac phenotype. Int. J. Mol. Sci. 2021;22(14):7349. https://doi.org/10.3390/ijms22147349
Lutz AK, Exner N, Fett ME, Schlehe JS, Kloos K, Lämmermann K, Brunner B, Kurz-Drexler A, Vogel F, Reichert AS, Bouman L, Vogt-Weisenhorn D, Wurst W, Tatzelt J, Haass C, Winklhofer KF. Loss of parkin or PINK1 function increases Drp1-dependent mitochondrial fragmentation. J. Biol. Chem. 2009;284(34):22 938-22 951. https://doi.org/10.1074/jbc.M109.035774
Reid AL, Alexander MS. The interplay of mitophagy and inflammation in Duchenne muscular dystrophy. Life (Basel). 2021;11(7):648. https://doi.org/10.3390/life11070648
Reutenauer J, Dorchies OM, Patthey-Vuadens O, Vuagniaux G, Ruegg UT. Investigation of Debio 025, a cyclophilin inhibitor, in the dystrophic mdx mouse, a model for Duchenne muscular dystrophy. Br. J. Pharmacol. 2008;155(4):574-584. https://doi.org/10.1038/bjp.2008.285
Schiavone M, Zulian A, Menazza S, Petronilli V, Argenton F, Merlini L, Sabatelli P, Bernardi P. Alisporivir rescues defective mitochondrial respiration in Duchenne muscular dystrophy. Pharmacol. Res. 2017;125(Pt B):122-131. https://doi.org/10.1016/j.phrs.2017.09.001
Wissing ER, Millay DP, Vuagniaux G, Molkentin JD. Debio-025 is more effective than prednisone in reducing muscular pathology in mdx mice. Neuromuscul. Disord. 2010;20(11):753-760. https://doi.org/10.1016/j.nmd.2010.06.016
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 172, No. 12, pp. 691-697, December, 2021
Rights and permissions
About this article
Cite this article
Dubinin, M.V., Starinets, V.S., Mikheeva, I.B. et al. Effect of Alisporivir on Calcium Ion Transport and Mitophagy in Skeletal Muscle and Heart Mitochondria in Dystrophin-Deficient Mice. Bull Exp Biol Med 172, 695–700 (2022). https://doi.org/10.1007/s10517-022-05459-6
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10517-022-05459-6