Mouse models of CNS embryonal tumors
Hiroyuki Momota1, Eric C Holland
1Neurosurgery Division, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan. momota-nsu@umin.ac.jp
Abstract:
Central nervous system (CNS) embryonal tumors are devastating cancers in children, consisting of medulloblastomas, CNS primitive neuroectodermal tumors, and atypical teratoid/rhabdoid tumors. One of the reasons that CNS embryonal tumors remain difficult to treat is their rarity, which makes conducting clinical trials for these tumors difficult. Recent advances of molecular biology have led us to identify molecular and genetic causality of brain tumors. Based on the genetic alterations found in humans, multiple models of human CNS embryonal tumors have been generated in genetically engineered mice. These mouse models are valuable tools for understanding brain tumor biology and discovering novel therapeutic targets and drugs. In this article, we review molecular and cytogenetic characteristics of human CNS embryonal tumors and corresponding mouse models that have been developed. These findings indicate that common genetic abnormalities are seen in variants of human CNS embryonal tumors, and multiple histological variants of these tumors can be generated from a single set of genetic abnormalities in mice. These data provide insight into the biology and classification of CNS embryonal tumors.
Insights
Mouse models are crucial for studying rare pediatric central nervous system (CNS) embryonal tumors. These models help understand tumor biology and identify new treatments for these devastating childhood cancers.
Area of Science:
- Pediatric oncology
- Neuro-oncology
- Cancer biology
Background:
- Central nervous system (CNS) embryonal tumors are rare and aggressive childhood cancers.
- Their rarity complicates clinical trials and treatment development.
- Advances in molecular biology have identified key genetic alterations in these tumors.
Purpose of the Study:
- To review the molecular and cytogenetic characteristics of human CNS embryonal tumors.
- To discuss corresponding genetically engineered mouse models.
- To highlight the utility of these models in understanding tumor biology and therapeutic development.
Main Methods:
- Review of scientific literature on CNS embryonal tumors and mouse models.
- Analysis of molecular and cytogenetic data from human tumors.
- Comparison of human tumor genetics with features of developed mouse models.
Main Results:
- Common genetic abnormalities are observed across different variants of human CNS embryonal tumors.
- Genetically engineered mouse models can recapitulate multiple histological variants from single genetic alterations.
- Mouse models provide valuable platforms for studying tumor biology and identifying therapeutic targets.
Conclusions:
- Genetically engineered mouse models are essential tools for advancing the study of CNS embryonal tumors.
- These models offer insights into the complex biology and classification of these pediatric brain cancers.
- Further development and utilization of mouse models are critical for discovering novel therapeutic strategies.
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