ArticleEMBO molecular medicine2024
Targeting PI3K/Akt/mTOR signaling in rodent models of PMP22 gene-dosage diseases.
Article in EMBO molecular medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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Who cites it
8 citing papers in PubMed, 8 citations in OpenAlex.
- Myelination and Remyelination in Peripheral Nerve Injury: Mechanisms, Regulation, and Therapeutic Perspectives.MedComm · 2026Review
- Recent Advances in Genetically Engineered Mouse Models of Melanoma: Insights into Tumor Initiation and Oncogenic Signaling Pathways.International journal of stem cells · 2026Review
- Article
- Advances in PMP22 sequence variant-associated hereditary neuropathy with liability to pressure palsies: from gene dosage effects to mechanism-informed variant interpretation.Frontiers in neurology · 2026Review
- Engineered nerve guide conduit enhances peripheral nerve regeneration by modulating the microenvironment through macrophage-triggered cascade reactions.Bioactive materials · 2025Article
- Article
- PMP22 duplication dysregulates lipid homeostasis and plasma membrane organization in developing human Schwann cells.Brain : a journal of neurology · 2024Article
- Immortalized Schwann cell lines as useful tools for pathogenesis-based therapeutic approaches to diabetic peripheral neuropathy.Frontiers in endocrinology · 2024Review
Corrections and comments
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Authors and funding
13 authors at 5 institutions in 2 countries.
Funding
Abstract
Haplo-insufficiency of the gene encoding the myelin protein PMP22 leads to focal myelin overgrowth in the peripheral nervous system and hereditary neuropathy with liability to pressure palsies (HNPP). Conversely, duplication of PMP22 causes Charcot-Marie-Tooth disease type 1A (CMT1A), characterized by hypomyelination of medium to large caliber axons. The molecular mechanisms of abnormal myelin growth regulation by PMP22 have remained obscure. Here, we show in rodent models of HNPP and CMT1A that the PI3K/Akt/mTOR-pathway inhibiting phosphatase PTEN is correlated in abundance with PMP22 in peripheral nerves, without evidence for direct protein interactions. Indeed, treating DRG neuron/Schwann cell co-cultures from HNPP mice with PI3K/Akt/mTOR pathway inhibitors reduced focal hypermyelination. When we treated HNPP mice in vivo with the mTOR inhibitor Rapamycin, motor functions were improved, compound muscle amplitudes were increased and pathological tomacula in sciatic nerves were reduced. In contrast, we found Schwann cell dedifferentiation in CMT1A uncoupled from PI3K/Akt/mTOR, leaving partial PTEN ablation insufficient for disease amelioration. For HNPP, the development of PI3K/Akt/mTOR pathway inhibitors may be considered as the first treatment option for pressure palsies.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.