Cited by 174Cancer Cells and MetastasisCellular Mechanics and InteractionsMathematical Biology Tumor Growth

Leading malignant cells initiate collective epithelial cell invasion in a three-dimensional heterotypic tumor spheroid model

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Carey, Shawn P., Starchenko, Alina, McGregor, Alexandra L., Reinhart-King, Cynthia A.·2013·Clinical & Experimental Metastasis

Abstract

Solid tumors consist of genetically and phenotypically diverse subpopulations of cancer cells with unique capacities for growth, differentiation, and invasion. While the molecular and microenvironmental bases for heterogeneity are increasingly appreciated, the outcomes of such intratumor heterogeneity, particularly in the context of tumor invasion and metastasis, remain poorly understood. To study heterotypic cell-cell interactions and elucidate the biological consequences of intratumor heterogeneity, we developed a tissue-engineered multicellular spheroid (MCS) co-culture model that recapitulates the cellular diversity and fully three-dimensional cell-cell and cell-matrix interactions that characterize human carcinomas. We found that "invasion-competent" malignant cells induced the collective invasion of otherwise "invasion-incompetent" epithelial cells, and that these two cell types consistently exhibited distinct leader and follower roles during invasion. Analysis of extracellular matrix (ECM) microarchitecture revealed that malignant cell invasion was accompanied by extensive ECM remodeling including matrix alignment and proteolytic track-making. Inhibition of cell contractility- and proteolysis-mediated matrix reorganization prevented leader-follower behavior and malignant cell-induced epithelial cell invasion. These results indicate that heterogeneous subpopulations within a tumor may possess specialized roles during tumor progression and suggest that complex interactions among the various subpopulations of cancer cells within a tumor may regulate critical aspects of tumor biology and affect clinical outcome.

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  • Alignment directs tumor invasion in hydrogels containing anisotropic structures generated by mechanical strain or by adding collagen-free tracks.

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Authors
Carey, S. P., Starchenko, A., McGregor, A. L., & Reinhart-King, C. A.
Affiliations
Cornell University (US)
Venue
Clinical & Experimental Metastasis
Published
2013-01-18
Volume
30
Issue
5
Pages
615-630
ISSN
  • 0262-0898 (ISSN-L)
  • 1573-7276
OpenAlex
W2143947514
Cited by
174
References
81
Citations by year
2026: 12 · 2025: 10 · 2024: 13 · 2023: 16 · 2022: 12 · 2021: 12 · 2020: 12 · 2019: 18 · 2018: 15 · 2017: 16 · 2016: 18 · 2015: 8 · 2014: 7 · 2013: 5
FWCI
6.79
Type
journal article
Language
en
Open access
Locations
  • Clinical & Experimental Metastasis (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Science Foundation
  • Barbara Ann Karmanos Cancer Institute
  • National Cancer Institute (U54CA143876)
  • Division of Civil, Mechanical and Manufacturing Innovation
Topics
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
  • Physical Sciences › Mathematics › Modeling and Simulation › Mathematical Biology Tumor Growth
Keywords
intratumoral heterogeneity, collective cell invasion, leader-follower behavior, cancer cells, epithelial cells, tumor spheroids, extracellular matrix remodeling, proteolysis, cell contractility, cell-matrix interactions, tumor progression, metastasis
MeSH terms
Epithelial Cells, Extracellular Matrix, Female, Humans, Models, Biological, Neoplasm Invasiveness, Spheroids, Cellular, Cell Line, Tumor, Tumor Microenvironment

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