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The Tumor Microenvironment02:17

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Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
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Related Experiment Video

Updated: Apr 30, 2026

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[Tumor microenvironment and therapeutic resistance process].

Lucia Borriello1, Yves A DeClerck1

  • 1Département de pédiatrie, de biochimie et biologie moléculaire  - Keck school of medicine, university of Southern California, États-Unis - Children's hospital Los Angeles, 4650 Sunset Boulevard CA 90027 Los Angeles, California, États-Unis.

Medecine Sciences : M/S
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Summary

The tumor microenvironment (TME) significantly impacts cancer progression and drug resistance by fostering interactions between cancer cells and surrounding stromal cells. Targeting these TME interactions shows promise for novel cancer therapies.

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Area of Science:

  • Oncology
  • Cancer Biology
  • Cellular Interactions

Context:

  • Cancer progression is influenced by the tumor microenvironment (TME), not solely genetic factors.
  • The TME comprises the extracellular matrix (ECM) and stromal cells that interact with tumor cells.
  • These interactions promote cancer cell survival and therapeutic resistance.

Purpose:

  • To elucidate the role of the tumor microenvironment in cancer progression and drug resistance.
  • To highlight the mechanisms of tumor cell-stroma interactions, including contact-dependent and independent pathways.
  • To underscore the bone marrow's unique role in drug resistance and metastasis.

Summary:

  • Tumor cells interact with the ECM and stromal cells via direct contact, soluble factors, and microvesicles.
  • The bone marrow acts as a sanctuary for tumor cells, promoting resistance and contributing to the pre-metastatic niche.
  • Understanding TME-mediated resistance is crucial for developing new therapeutic strategies.

Impact:

  • Clinical trials are investigating therapies that disrupt tumor cell-stroma interactions.
  • Targeting the TME represents a promising new frontier in cancer treatment.
  • This research opens avenues for overcoming drug resistance in various cancers.