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Related Concept Videos

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Related Experiment Video

Updated: May 29, 2026

Modeling Paracrine Noncanonical Wnt Signaling In Vitro
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Walnut-Derived Extracellular Vesicles Orchestrate a Pre-Regenerative Niche via c-Myc Mediated Metabolic

Junyang Gao1, Genzhong Xu2, Nianci Huo1

  • 1Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.

Glia
|May 28, 2026
PubMed
Summary

Walnut-derived extracellular vesicles (WEVs) promote peripheral nerve repair by creating a regenerative microenvironment. These nanotherapeutics enhance Schwann cell metabolism and function, improving nerve regeneration outcomes.

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Last Updated: May 29, 2026

Modeling Paracrine Noncanonical Wnt Signaling In Vitro
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Transfer of Mammary Gland-forming Ability Between Mammary Basal Epithelial Cells and Mammary Luminal Cells via Extracellular Vesicles/Exosomes
09:59

Transfer of Mammary Gland-forming Ability Between Mammary Basal Epithelial Cells and Mammary Luminal Cells via Extracellular Vesicles/Exosomes

Published on: June 3, 2017

Area of Science:

  • Neuroscience
  • Regenerative Medicine
  • Nanotherapeutics

Background:

  • Peripheral nerve injury (PNI) presents significant regenerative challenges due to microenvironmental disruptions affecting Schwann cell (SC) homeostasis.
  • Traditional ethnomedicine suggests walnuts (Juglans regia) possess neurotrophic properties, historically linked to their brain-like appearance.

Purpose of the Study:

  • To investigate walnut-derived extracellular vesicles (WEVs) as a nanotherapeutic approach for peripheral nerve repair.
  • To elucidate the mechanisms by which WEVs influence the post-injury microenvironment and SC function.

Main Methods:

  • Isolation and characterization of WEVs from walnuts.
  • Evaluation of WEV internalization by SCs in vitro.
  • Assessment of SC metabolic shifts, including aerobic glycolysis and lactate export.
  • Analysis of mitochondrial dynamics and mitophagy in SCs.
  • In vivo studies using a rat sciatic nerve compression model to evaluate nerve regeneration, functional recovery, and muscle atrophy.

Main Results:

  • WEVs are internalized by SCs and establish a "pre-regenerative niche" by modulating SC metabolism.
  • WEVs induce a c-Myc-mediated transcriptional program, promoting aerobic glycolysis and lactate shuttle.
  • WEVs limit stress-induced mitophagy, preserving mitochondrial integrity.
  • In vivo, WEVs improved remyelination, motor and sensory function, and reduced muscle atrophy in a rat sciatic nerve injury model.

Conclusions:

  • WEVs offer a mechanistic basis for the traditional neuroprotective value of walnuts.
  • WEVs represent a promising nanotherapeutic candidate for promoting peripheral nerve regeneration by optimizing glial metabolic plasticity.
  • Targeting the glial metabolic microenvironment is a viable strategy for enhancing nerve repair outcomes.