Cited by 37Glioma Diagnosis and TreatmentCancer Cells and MetastasisBrain Metastases and Treatment

Molecular determinants of medulloblastoma metastasis and leptomeningeal dissemination

Open access
Li, Min, Deng, Yuhao, Zhang, Wangming·2021·Molecular Cancer Research

Abstract

Abstract Medulloblastoma is the most common malignant brain cancer in pediatrics consisting of four molecular subgroups, namely wingless (WNT), sonic hedgehog (SHH), Group 3, and Group 4. One of the biggest challenges in the clinical management of this disease is the leptomeningeal dissemination (LMD) of tumor cells with high morbidity and mortality. Many molecular regulators to date have been identified to participate in medulloblastoma metastasis. In the SHH subgroup, the co-upregulation of CXCR4 and PDGFR, as well as the activation of c-MET, show significant promigratory effects on medulloblastoma cells. Amplification or overexpression of genes on the long arm of chromosome 17, such as LASP1 and WIP1, facilitates tumor invasion in both Group 3 and Group 4 medulloblastomas. PRUNE1, NOTCH1, and MYC interactor JPO2 are more specific genetic drivers of metastatic Group 3 tumors. The RAS/MAPK and PI3K/AKT pathways are two crucial signal transduction pathways that may work as the convergent downstream mechanism of various metastatic drivers. Extracellular signals and cellular components in the tumor microenvironment also play a vital role in promoting the spread and colonization of medulloblastoma cells. For instance, the stromal granule cells and astrocytes support tumor growth and dissemination by secreting PlGF and CCL2, respectively. Importantly, the genetic divergence has been determined between the matched primary and metastatic medulloblastoma samples. However, the difficulty of obtaining metastatic medulloblastoma tissue hinders more profound studies of LMD. Therefore, identifying and analyzing the subclone with the metastatic propensity in the primary tumor is essential for future investigation.

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Registry

Crossref · 10.1158/1541-7786.mcr-20-1026

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90 of 90 references verified0 citation errors · 0 not checkable

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Authors
Li, M., Deng, Y., & Zhang, W.
Affiliations
  • Zhujiang Hospital (CN)
  • Department of Pediatrics Neurosurgery, Neurosurgery Center, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Corresponding author
Zhang, Wangming
Venue
Molecular Cancer Research
Published
2021-02-19
Volume
19
Issue
5
Pages
743-752
ISSN
  • 1541-7786 (ISSN-L)
  • 1557-3125
OpenAlex
W3131954798
Cited by
37
References
90
Citations by year
2026: 2 · 2025: 9 · 2024: 10 · 2023: 9 · 2022: 6
FWCI
0.92
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Molecular Cancer Research (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
none (none)
Topics
  • Health Sciences › Medicine › Genetics › Glioma Diagnosis and Treatment
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Brain Metastases and Treatment
Keywords
medulloblastoma, leptomeningeal dissemination, metastasis, molecular subtypes, sonic hedgehog subgroup, Group 3 medulloblastoma, Group 4 medulloblastoma, WNT subgroup, CXCR4, PDGFR, c-Met, chromosome 17q, LASP1, Wip1, Notch1, c-Myc, RAS/MAPK pathway, PI3K/Akt signaling, tumor microenvironment, granule cells, astrocytes, placental growth factor, MCP-1, tumor subclones, pediatric brain tumors
MeSH terms
Humans, Medulloblastoma, Neoplasm Metastasis, Meningeal Carcinomatosis

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