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Related Concept Videos

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Mouse Models of Cancer Study

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Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
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Related Experiment Video

Updated: May 5, 2026

Intracarotid Cancer Cell Injection to Produce Mouse Models of Brain Metastasis
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Current preclinical models of brain metastasis.

Zacharie Drouin1,2,3, Flavie Lévesque1,2,3, Korina Mouzakitis1,2,3

  • 1Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3201 Rue Jean-Mignault, Sherbrooke, QC, J1E 4K8, Canada.

Clinical & Experimental Metastasis
|December 18, 2024
PubMed
Summary

Brain metastases (BMs) are common in cancer patients. This review explores preclinical models to study BMs and overcome drug delivery challenges, aiding new therapeutic development.

Keywords:
Blood–brain barrierBrain metastasisColonizationInvasionPreclinical model

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Area of Science:

  • Oncology
  • Neuroscience
  • Translational Medicine

Background:

  • Brain metastases (BMs) are the most common brain tumors in adults, affecting up to 20% of cancer patients.
  • The blood-brain barrier limits drug efficacy, posing a significant challenge for treating BMs.
  • Tumor heterogeneity and the brain microenvironment complicate clinical management.

Purpose of the Study:

  • To review existing preclinical models for studying brain metastasis.
  • To outline the advantages and limitations of various in vivo, in vitro, and ex vivo models.
  • To support the development of novel therapeutic strategies for BMs.

Main Methods:

  • Comprehensive literature review of preclinical models for brain metastasis research.
  • Analysis of in vivo (animal), in vitro (cell culture), and ex vivo (tissue explant) models.
  • Evaluation of model suitability for investigating drug delivery and therapeutic efficacy.

Main Results:

  • Various preclinical models exist, each with unique strengths and weaknesses for studying BMs.
  • Models differ in their ability to recapitulate the complexities of human brain metastasis.
  • No single model perfectly replicates the human condition, necessitating careful selection.

Conclusions:

  • Appropriate preclinical models are crucial for advancing brain metastasis research.
  • Understanding model limitations is key to interpreting results and developing effective treatments.
  • Further development of sophisticated models is needed to improve patient outcomes for BMs.