Related Experiment Video

Updated: May 8, 2026

Identifying, Diagnosing, and Grading Malignant Peripheral Nerve Sheath Tumors in Genetically Engineered Mouse Models
08:57

Identifying, Diagnosing, and Grading Malignant Peripheral Nerve Sheath Tumors in Genetically Engineered Mouse Models

Published on: May 17, 2024

Neuropilin-2 contributes to tumorigenicity in a mouse model of Hedgehog pathway medulloblastoma

Melanie G Hayden Gephart1, YouRong Sophie Su, Samuel Bandara

  • 1Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA, mghayden@gmail.com.

Journal of Neuro-Oncology
|September 13, 2013
PubMed

Insights

Neuropilin-2 (Nrp2) is crucial for medulloblastoma (MB) cell proliferation. Targeting Nrp2 in MB may offer a new therapeutic strategy to improve patient survival rates.

Area of Science:

  • Oncology
  • Molecular Biology
  • Neuro-oncology

Background:

  • The Hedgehog (Hh) signaling pathway is implicated in medulloblastoma (MB), the most common childhood brain tumor.
  • Current treatments for MB have significant toxicity, necessitating novel targeted therapies.
  • Neuropilin (Nrp) transmembrane proteins are essential for Hh signal transduction.

Purpose of the Study:

  • To investigate the role of Neuropilin (Nrp) proteins in medulloblastoma (MB) cells.
  • To determine if Nrp2 could be a potential therapeutic target for MB.

Main Methods:

  • Utilized cultured medulloblastoma cells (Med1-MB) derived from Ptch (+/-) ;LacZ mice.
  • Assessed the dependence of Med1-MB proliferation on Nrp1 and Nrp2.
  • Investigated the effect of Nrp2 knockdown on tumor formation and mouse survival post-implantation.
  • Evaluated the impact of Nrp2 knockdown on tumor vascularization.

Main Results:

  • Med1-MB cells exhibited constitutive Hh target gene transcription and formed tumors rapidly in mice.
  • Medulloblastoma cell proliferation in vitro was dependent on Nrp2, with Nrp1 having minimal effect.
  • Nrp2 knockdown significantly increased mouse survival and did not directly affect tumor vascularization.

Conclusions:

  • Neuropilin-2 (Nrp2) plays a critical role in medulloblastoma cell proliferation.
  • Nrp2 is a promising target for developing new adjuvant therapies for medulloblastoma patients.

More Related Videos

Isolation, Enrichment, and Maintenance of Medulloblastoma Stem Cells06:32

Isolation, Enrichment, and Maintenance of Medulloblastoma Stem Cells

Published on: September 1, 2010

Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells09:37

Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells

Published on: August 25, 2021

Related Concept Videos

Hedgehog Signaling Pathway02:33

Hedgehog Signaling Pathway

The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
Hedgehog Signaling Pathway02:33

Hedgehog Signaling Pathway

The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...