PMID- 35477657 OWN - NLM STAT- MEDLINE DCOM- 20220808 LR - 20230804 IS - 1525-0024 (Electronic) IS - 1525-0016 (Print) IS - 1525-0016 (Linking) VI - 30 IP - 8 DP - 2022 Aug 3 TI - Boosting the peripheral immune response in the skeletal muscles improved motor function in ALS transgenic mice. PG - 2760-2784 LID - S1525-0016(22)00248-9 [pii] LID - 10.1016/j.ymthe.2022.04.018 [doi] AB - Monocyte chemoattractant protein-1 (MCP1) is one of the most powerful pro-inflammatory chemokines. However, its signaling is pivotal in driving injured axon and muscle regeneration. We previously reported that MCP1 is more strongly upregulated in the nervous system of slow-progressing than fast-progressing SOD1(G93A) mice, the latter showing a poor immune response and eventual massive nerve and muscle degeneration. To assess the MCP1-mediated therapeutic role, we boosted the chemokine along the motor unit of the two SOD1(G93A) models through a single intramuscular injection of a scAAV9 vector engineered with the Mcp1 gene. We provided direct evidence underlying the pivotal role of the immune response in driving skeletal muscle regeneration and thus the speed of ALS progression. The comparative study performed in fast- and slow-progressing SOD1(G93A) mice spotlights the nature and temporal activation of the inflammatory response as limiting factors to preserve the periphery and interfere with the disease course. In addition, we recorded a novel pleiotropic role of MCP1 in promoting peripheral axon regeneration and modulating neuroinflammation, ultimately preventing neurodegeneration. Altogether, these observations highlight the immune response as a key determinant for disease variability and proffer a reasonable explanation for the failure of systemic immunomodulatory treatments, suggesting new potential strategies to hamper ALS progression. CI - Copyright (c) 2022 The Author(s). Published by Elsevier Inc. All rights reserved. FAU - Trolese, Maria Chiara AU - Trolese MC AD - Laboratory of Molecular Neurobiology, Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy. FAU - Scarpa, Carlotta AU - Scarpa C AD - Laboratory of Molecular Neurobiology, Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy. FAU - Melfi, Valentina AU - Melfi V AD - Laboratory of Molecular Neurobiology, Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy. FAU - Fabbrizio, Paola AU - Fabbrizio P AD - Laboratory of Molecular Neurobiology, Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy. FAU - Sironi, Francesca AU - Sironi F AD - Laboratory of Molecular Neurobiology, Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy. FAU - Rossi, Martina AU - Rossi M AD - Laboratory of Molecular Neurobiology, Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy. FAU - Bendotti, Caterina AU - Bendotti C AD - Laboratory of Molecular Neurobiology, Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy. Electronic address: caterina.bendotti@marionegri.it. FAU - Nardo, Giovanni AU - Nardo G AD - Laboratory of Molecular Neurobiology, Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy. Electronic address: giovanni.nardo@marionegri.it. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220427 PL - United States TA - Mol Ther JT - Molecular therapy : the journal of the American Society of Gene Therapy JID - 100890581 RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 1.15.1.1 (Superoxide Dismutase-1) SB - IM MH - *Amyotrophic Lateral Sclerosis/genetics/therapy MH - Animals MH - Axons MH - Disease Models, Animal MH - Immunity MH - Mice MH - Mice, Transgenic MH - Muscle, Skeletal MH - Nerve Regeneration MH - Superoxide Dismutase/genetics MH - Superoxide Dismutase-1/genetics PMC - PMC9372324 OTO - NOTNLM OT - amyotrophic lateral sclerosis OT - immune cells OT - motor neuron OT - mouse models OT - myogenesis OT - satellite cells OT - skeletal muscle COIS- Declaration of interests The authors declare no competing interests. EDAT- 2022/04/29 06:00 MHDA- 2022/08/09 06:00 PMCR- 2023/08/03 CRDT- 2022/04/28 05:22 PHST- 2021/10/19 00:00 [received] PHST- 2022/04/15 00:00 [revised] PHST- 2022/04/25 00:00 [accepted] PHST- 2022/04/29 06:00 [pubmed] PHST- 2022/08/09 06:00 [medline] PHST- 2022/04/28 05:22 [entrez] PHST- 2023/08/03 00:00 [pmc-release] AID - S1525-0016(22)00248-9 [pii] AID - 10.1016/j.ymthe.2022.04.018 [doi] PST - ppublish SO - Mol Ther. 2022 Aug 3;30(8):2760-2784. doi: 10.1016/j.ymthe.2022.04.018. Epub 2022 Apr 27.