Author, as appears in the article.: Just-Borras, Laia; Hurtado, Erica; Cilleros-Mane, Victor; Biondi, Olivier; Charbonnier, Frederic; Tomas, Marta; Garcia, Neus; Lanuza, Maria A; Tomas, Josep
Department: Ciències Mèdiques Bàsiques
URV's Author/s: Cilleros Mañé, Víctor / Garcia Sancho, Maria de les Neus / Hurtado Caballero, Erica / Just Borràs, Laia / Lanuza Escolano, María Angel / Tomás Ferré, José Maria / Tomas Marginet, Marta
Keywords: Trkb; Superoxide dismutase-1; Spinal cord; Snare proteins; Snap-25; Skeletal muscle; Signal transduction; Receptors, nerve growth factor; Protein serine-threonine kinases; Pkc; Pka; Nmj; Neuromuscular junction; Nerve growth factors; Muscles; Munc18-1; Motor neurons; Models, biological; Mice, transgenic; Male; Disease models, animal; Catalytic domain; Brain-derived neurotrophic factor; Bdnf; Animals; Amyotrophic lateral sclerosis; Als
Abstract: Amyotrophic lateral sclerosis (ALS) is a chronic neurodegenerative disease characterized by progressive motor weakness. It is accepted that it is caused by motoneuron degeneration leading to a decrease in muscle stimulation. However, ALS is being redefined as a distal axonopathy, in that neuromuscular junction dysfunction precedes and may even influence motoneuron loss. In this synapse, several metabotropic receptor-mediated signaling pathways converge on effector kinases that phosphorylate targets that are crucial for synaptic stability and neurotransmission quality. We have previously shown that, in physiological conditions, nerve-induced muscle contraction regulates the brain-derived neurotrophic factor/tropomyosin-related kinase B (BDNF/TrkB) signaling to retrogradely modulate presynaptic protein kinases PKC and PKA, which are directly involved in the modulation of acetylcholine release. In ALS patients, the alteration of this signaling may significantly contribute to a motor impairment. Here, we investigate whether BDNF/TrkB signaling, the downstream PKC (cPKCβI, cPKCα, and nPKCε isoforms), and PKA (regulatory and catalytic subunits) and some SNARE/SM exocytotic machinery proteins (Munc18-1 and SNAP-25) are altered in the skeletal muscle of pre- and symptomatic SOD1-G93A mice. We found that this pathway is strongly affected in symptomatic ALS mice muscles including an unbalance between (I) BDNF and TrkB isoforms, (II) PKC isoforms and PKA subunits, and (III) Munc18-1 and SNAP-25 phosphorylation ratios. Changes in TrkB.T1 and cPKCβI are precociously observed in presymptomatic mice. Altogether, several of these molecular alterations can be partly associated with the known fast-to-slow motor unit transition during the disease process but others can be related with the initial disease pathogenesis.
Thematic Areas: Saúde coletiva; Química; Odontología; Nutrição; Neurosciences; Neuroscience (miscellaneous); Neurology; Medicina veterinaria; Medicina iii; Medicina ii; Medicina i; Materiais; Interdisciplinar; Farmacia; Ensino; Engenharias iv; Engenharias ii; Ciências biológicas iii; Ciências biológicas ii; Ciências biológicas i; Ciências ambientais; Cellular and molecular neuroscience; Biotecnología; Biodiversidade; Administração pública e de empresas, ciências contábeis e turismo
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 08937648
Author's mail: laia.just@urv.cat; marta.tomas@urv.cat; erica.hurtado@urv.cat; victor.cilleros@alumni.urv.cat; josepmaria.tomas@urv.cat; laia.just@urv.cat; mariaangel.lanuza@urv.cat
Last page: 6872
Record's date: 2024-10-12
Journal volume: 56
Paper version: info:eu-repo/semantics/submittedVersion
Link to the original source: https://link.springer.com/article/10.1007%2Fs12035-019-1550-1
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Paper original source: Molecular Neurobiology. 56 (10): 6856-6872
APA: Just-Borras, Laia; Hurtado, Erica; Cilleros-Mane, Victor; Biondi, Olivier; Charbonnier, Frederic; Tomas, Marta; Garcia, Neus; Lanuza, Maria A; Tomas, (2019). Overview of Impaired BDNF Signaling, Their Coupled Downstream Serine-Threonine Kinases and SNARE/SM Complex in the Neuromuscular Junction of the Amyotrophic Lateral Sclerosis Model SOD1-G93A Mice. Molecular Neurobiology, 56(10), 6856-6872. DOI: 10.1007/s12035-019-1550-1
Article's DOI: 10.1007/s12035-019-1550-1
Entity: Universitat Rovira i Virgili
Journal publication year: 2019
First page: 6856
Publication Type: Journal Publications
Repositori URV