ArticleScientific reports2022
Involvement of neuronal and muscular Trk-fused gene (TFG) defects in the development of neurodegenerative diseases.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 7 citations in OpenAlex.
- Base editing rescues a hereditary motor neuron disease in mouse and patient-derived iPSC organoid models.Molecular therapy. Advances · 2026Article
- Trk-fused gene plays a critical role in diet-induced adipose tissue expansion and is also involved in thyroid hormone action.PNAS nexus · 2024Article
- Pluripotent Stem Cells as a Preclinical Cellular Model for Studying Hereditary Spastic Paraplegias.International journal of molecular sciences · 2024Review
- Fibril structures of TFG protein mutants validate the identification of TFG as a disease-related amyloid protein by the IMPAcT method.PNAS nexus · 2023Article
- A novel TFG variant of uncertain significance in amyotrophic lateral sclerosis: A case report and review of literature.Annals of medicine and surgery (2012) · 2022Article
- TFG regulates secretory and endosomal sorting pathways in neurons to promote their activity and maintenance.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
12 authors at 6 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Trk-fused gene (TFG) mutations have been identified in patients with several neurodegenerative diseases. In this study, we attempted to clarify the effects of TFG deletions in motor neurons and in muscle fibers, using tissue-specific TFG knockout (vMNTFG KO and MUSTFG KO) mice. vMNTFG KO, generated by crossing TFG floxed with VAChT-Cre, showed deterioration of motor function and muscle atrophy especially in slow-twitch soleus muscle, in line with the predominant Cre expression in slow-twitch fatigue-resistant (S) and fast-twitch fatigue-resistant (FR) motor neurons. Consistently, denervation of the neuromuscular junction (NMJ) was apparent in the soleus, but not in the extensor digitorum longus, muscle. Muscle TFG expressions were significantly downregulated in vMNTFG KO, presumably due to decreased muscle IGF-1 concentrations. However, interestingly, MUSTFG KO mice showed no apparent impairment of muscle movements, though a denervation marker, AChRγ, was elevated and Agrin-induced AChR clustering in C2C12 myotubes was inhibited. Our results clarify that loss of motor neuron TFG is sufficient for the occurrence of NMJ degeneration and muscle atrophy, though lack of muscle TFG may exert an additional effect. Reduced muscle TFG, also observed in aged mice, might be involved in age-related NMJ degeneration, and this issue merits further study.
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