ArticleMolecular and cellular neurosciences2011
p75(NTR) expression and nuclear localization of p75(NTR) intracellular domain in spiral ganglion Schwann cells following deafness correlate with cell proliferation.
Article in Molecular and cellular neurosciences, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed, 44 citations in OpenAlex.
- Subtype-Specific Vulnerability of Spiral Ganglion Neurons in Sensorineural Hearing Loss Across the Lifespan.Brain sciences · 2026Review
- Spiral ganglion neuron degeneration in aminoglycoside-deafened rats involves innate and adaptive immune responses not requiring complement.Frontiers in molecular neuroscience · 2024Article
- Candidate Key Proteins in Tinnitus: A Bioinformatic Study of Synaptic Transmission in Spiral Ganglion Neurons.Cellular and molecular neurobiology · 2023Article
- Reduction of sporadic and neurofibromatosis type 2-associated vestibular schwannoma growth in vitro and in vivo after treatment with the c-Jun N-terminal kinase inhibitor AS602801.Journal of neurosurgery · 2023Article
- Anti-inflammatory Therapy Protects Spiral Ganglion Neurons After Aminoglycoside Antibiotic-Induced Hair Cell Loss.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023Article
- Closing the Gap between the Auditory Nerve and Cochlear Implant Electrodes: Which Neurotrophin Cocktail Performs Best for Axonal Outgrowth and Is Electrical Stimulation Beneficial?International journal of molecular sciences · 2023Article
- Shikonin Attenuates Cochlear Spiral Ganglion Neuron Degeneration by Activating Nrf2-ARE Signaling Pathway.Frontiers in molecular neuroscience · 2022Article
- The biological underpinnings of radiation therapy for vestibular schwannomas: Review of the literature.Laryngoscope investigative otolaryngology · 2021Review
- Estradiol Replacement at the Critical Period Protects Hippocampal Neural Stem Cells to Improve Cognition in APP/PS1 Mice.Frontiers in aging neuroscience · 2020Article
- Nerve growth factor activates autophagy in Schwann cells to enhance myelin debris clearance and to expedite nerve regeneration.Theranostics · 2020Article
- Spatiotemporal Differences in Gene Expression Between Motor and Sensory Autografts and Their Effect on Femoral Nerve Regeneration in the Rat.Frontiers in cellular neuroscience · 2019Article
- proBDNF inhibits the proliferation and migration of OLN‑93 oligodendrocytes.Molecular medicine reports · 2018Article
- Nf2 Mutation in Schwann Cells Delays Functional Neural Recovery Following Injury.Neuroscience · 2018Article
- Direct Reprogramming of Spiral Ganglion Non-neuronal Cells into Neurons: Toward Ameliorating Sensorineural Hearing Loss by Gene Therapy.Frontiers in cell and developmental biology · 2018Article
- Photopolymerized Microfeatures Guide Adult Spiral Ganglion and Dorsal Root Ganglion Neurite Growth.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2018Article
- Organ of Corti explants direct tonotopically graded morphology of spiral ganglion neurons in vitro.The Journal of comparative neurology · 2016Article
- A small molecule induces integrin β4 nuclear translocation and apoptosis selectively in cancer cells with high expression of integrin β4.Oncotarget · 2016Article
- Schwannomas provide insight into the role of p75(NTR) and merlin in Schwann cells following nerve injury and during regeneration.Neural regeneration research · 2016Article
- Merlin status regulates p75(NTR) expression and apoptotic signaling in Schwann cells following nerve injury.Neurobiology of disease · 2015Article
- Characterization of a unique cell population marked by transgene expression in the adult cochlea of nestin-CreER(T2)/tdTomato-reporter mice.The Journal of comparative neurology · 2015Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
Spiral ganglion Schwann cells (SGSCs) myelinate spiral ganglion neurons (SGNs) and represent a potential source of neurotrophic support for SGNs. Deafening due to loss of hair cells results in gradual degeneration and death of SGNs. Successful efforts to maintain or regenerate a functional auditory nerve may depend on a healthy population of SGSCs, yet the responses of SGSCs to neural injury remain largely unknown. Here we investigate the role of p75(NTR) in SGSC responses to gradual denervation. Following deafening, SGSCs in the osseous spiral lamina (OSL) and, subsequently, in Rosenthal's canal (RC) expressed elevated p75(NTR) compared to hearing controls. p75(NTR)-positive cells co-labeled with S100 and RIP antibodies (Schwann cell markers), but not with anti-neurofilament. The pattern of p75(NTR) expression mirrored the pattern of neural degeneration, beginning in the OSL of the cochlea base and later extending into the apex. SGSCs expressed sortilin, a p75(NTR) co-receptor for pro-neurotrophins. Both pro-nerve growth factor (pro-NGF) and pro-brain derived neurotrophic factor (proBDNF) induced apoptosis in cultured SGSCs. Deafened animals exhibited significantly higher levels of SGSC proliferation (as measured by BrdU uptake) compared to hearing animals while total Schwann cell density remained stable, suggesting a tight regulation of SGSC proliferation and cell death. SGSCs undergoing cell division lose p75(NTR) expression from the cell surface and demonstrate nuclear localization of the intracellular domain (ICD), raising the possibility that p75(NTR) cleavage and ICD nuclear localization regulate SGSC proliferation. These results suggest that p75(NTR) contributes to SGSC responses to deafening and neural degeneration.
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