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Related Concept Videos

Nervous Tissue: Myelin01:25

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The myelin sheath is a multilayered lipid and protein covering that insulates the axon of a neuron, enhancing the speed of nerve impulse conduction. Axons without this sheath are referred to as unmyelinated. Two types of neuroglia, Schwann cells in the peripheral nervous system (PNS) and oligodendrocytes in the central nervous system (CNS) are responsible for producing myelin sheaths.
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The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
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Related Experiment Video

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Author Spotlight: Genetically Engineered Mouse Models and Pathological Characterization of Neurofibromatosis Type 1 Associated Tumors
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Malignant Peripheral Nerve Sheath Tumors.

Adam D Durbin1,2,3, Dong Hyuk Ki4,5, Shuning He4,5

  • 1Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA. adam.durbin@childrens.harvard.edu.

Advances in Experimental Medicine and Biology
|May 12, 2016
PubMed
Summary
This summary is machine-generated.

Malignant peripheral nerve sheath tumors (MPNST) are rare but increasing. Zebrafish models offer a promising avenue for discovering new targeted therapies to improve treatment for this devastating disease.

Keywords:
AktEGFRMPNSTMalignant peripheral nerve sheath tumorNF1PI3KRASTumor modelingZebrafishmTORp16INK4Ap53

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Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Malignant peripheral nerve sheath tumors (MPNST) are rare but increasing, particularly in patients with neurofibromatosis type 1 (NF1).
  • Current MPNST treatments are limited, lacking targeted therapies and showing poor efficacy with conventional methods.
  • Understanding the molecular pathogenesis of MPNST is crucial for developing effective treatments.

Purpose of the Study:

  • To review the current understanding of MPNST molecular pathogenesis.
  • To highlight the utility of zebrafish models in MPNST research.
  • To explore the potential of novel therapeutic strategies and drug screening in zebrafish.

Main Methods:

  • Review of existing literature on MPNST.
  • Analysis of genetic and signaling pathways implicated in MPNST development (p53, RB1, PI3K-Akt-mTOR, RAS-ERK, Wnt).
  • Discussion of the application of genome editing technologies (CRISPR-cas9) in zebrafish models.

Main Results:

  • Dysregulation of key signaling pathways (p53, RB1, PI3K-Akt-mTOR, RAS-ERK, Wnt) identified in MPNST tumorigenesis.
  • Preclinical data suggest combination therapies (mTOR/ERK inhibitors with chemotherapy) may be beneficial.
  • Zebrafish models, enhanced by CRISPR-cas9, facilitate accurate MPNST modeling.

Conclusions:

  • Zebrafish models are valuable for high-throughput screening of targeted therapeutics for MPNST.
  • Advancements in genome editing accelerate MPNST research and therapeutic development.
  • Targeted therapies and drug repurposing in zebrafish hold promise for future clinical trials in MPNST patients.