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Overview of Systemic and Pulmonary Circulation01:15

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Thermodynamics of a Redox Reaction
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Updated: Jan 21, 2026

Micromanipulation of Circulating Tumor Cells for Downstream Molecular Analysis and Metastatic Potential Assessment
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Micromanipulation of Circulating Tumor Cells for Downstream Molecular Analysis and Metastatic Potential Assessment

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Circulating tumor cells exit circulation while maintaining multicellularity, augmenting metastatic potential.

Tyler A Allen1, Dana Asad2, Emmanuel Amu1

  • 1Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27607, USA.

Journal of Cell Science
|August 15, 2019
PubMed
Summary
This summary is machine-generated.

Tumor cells extravasate from circulation via angiopellosis, both individually and in clusters. Cluster extravasation enhances distant tumor formation, revealing a new model for cancer metastasis.

Keywords:
AngiopellosisCancer exodus hypothesisCirculating tumor cell clusterMetastasisTumor cell extravasation

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Area of Science:

  • Oncology
  • Cell Biology
  • Cancer Research

Background:

  • Metastasis is responsible for most cancer deaths, with tumor cell extravasation from circulation being a critical, poorly understood step.
  • It remains unclear if tumor cells extravasate individually or as multicellular clusters.

Purpose of the Study:

  • To elucidate the mechanism of tumor cell extravasation.
  • To determine if tumor cells extravasate as single cells or multicellular clusters.
  • To investigate the impact of cluster extravasation on distant tumor formation.

Main Methods:

  • Utilized in vivo zebrafish and mouse models to observe tumor cell extravasation.
  • Investigated the angiopellosis mechanism for tumor cell exit from circulation.
  • Analyzed genetic profiles of melanoma and cervical cancer cells during cluster extravasation.

Main Results:

  • Confirmed that circulating tumor cells utilize angiopellosis to extravasate.
  • Demonstrated that tumor cells extravasate as both individual cells and multicellular clusters.
  • Showed that clustered tumor cells exhibit enhanced distant tumor formation due to unique genetic profiles.

Conclusions:

  • Presented a novel model for tumor cell extravasation involving both individual and multicellular circulating tumor cells.
  • Highlighted the role of angiopellosis in tumor cell dissemination.
  • Emphasized the increased metastatic potential of tumor cell clusters exiting via angiopellosis.