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- W4367060785 abstract "Abstract Several homeoprotein transcription factors transfer between cells and regulate gene expression, protein translation, and chromatin organization in recipient cells. ENGRAILED‐1 is one such homeoprotein expressed in spinal V1 interneurons that synapse on α‐motoneurons. Neutralizing extracellular ENGRAILED‐1 by expressing a secreted single‐chain antibody blocks its capture by spinal motoneurons resulting in α‐motoneuron loss and limb weakness. A similar but stronger phenotype is observed in the Engrailed‐1 heterozygote mouse, confirming that ENGRAILED‐1 exerts a paracrine neurotrophic activity on spinal cord α‐motoneurons. Intrathecal injection of ENGRAILED‐1 leads to its specific internalization by spinal motoneurons and has long‐lasting protective effects against neurodegeneration and weakness. Midbrain dopaminergic neurons express Engrailed‐1 and, similarly to spinal cord α‐motoneurons, degenerate in the heterozygote. We identify genes expressed in spinal cord motoneurons whose expression changes in mouse Engrailed‐1 heterozygote midbrain neurons. Among these, p62/SQSTM1 shows increased expression during aging in spinal cord motoneurons in the Engrailed‐1 heterozygote and upon extracellular ENGRAILED‐1 neutralization. We conclude that ENGRAILED‐1 might regulate motoneuron aging and has non‐cell‐autonomous neurotrophic activity." @default.
- W4367060785 created "2023-04-27" @default.
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- W4367060785 date "2023-07-06" @default.
- W4367060785 modified "2023-10-14" @default.
- W4367060785 title "<scp>ENGRAILED</scp>‐1 transcription factor has a paracrine neurotrophic activity on adult spinal α‐motoneurons" @default.
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- W4367060785 doi "https://doi.org/10.15252/embr.202256525" @default.
- W4367060785 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37534581" @default.
- W4367060785 hasPublicationYear "2023" @default.
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