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Metastasis02:30

Metastasis

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Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
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[When a metastasis hides another].

Fanchon Noël1, Joëlle Desreux2, Irène Scagnol1

  • 1Service d'Anatomie pathologique, CHU Liège, Belgique.

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|August 10, 2023
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Summary
This summary is machine-generated.

Breast cancer, a leading cause of death in women, exhibits significant intra-tumour heterogeneity. Analyzing its temporal and spatial variations could reveal new therapeutic targets.

Keywords:
CancerMetastasisTemporal and spatial heterogeneityTumor micro-environment

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Area of Science:

  • Oncology
  • Genomics
  • Cancer Biology

Background:

  • Breast cancer remains a significant global health challenge, particularly for women.
  • Tumour diversity is a key factor in treatment resistance and patient outcomes.
  • Understanding tumour complexity is crucial for advancing cancer therapy.

Observation:

  • Breast cancers display considerable heterogeneity at morphological, immunohistochemical, and genomic levels.
  • Intra-tumour heterogeneity manifests across time (temporal) and space (spatial).
  • This heterogeneity is shaped by intrinsic factors like genetics and epigenetics, and extrinsic influences including host response, treatments, and the tumour microenvironment.

Findings:

  • Multiple interacting factors contribute to the development and evolution of breast cancer heterogeneity.
  • Spatial and temporal heterogeneity are critical characteristics of malignant tumours.
  • The complex interplay of genetic, epigenetic, and environmental factors drives tumour diversity.

Implications:

  • Detailed analysis of these interactions can illuminate the mechanisms underlying tumour progression.
  • Identifying the drivers of heterogeneity may lead to the discovery of novel therapeutic targets.
  • Targeting intra-tumour heterogeneity could improve treatment efficacy and overcome resistance in breast cancer patients.