» Articles » PMID: 15466396

Adhesion-mediated Squamous Cell Carcinoma Survival Through Ligand-independent Activation of Epidermal Growth Factor Receptor

Overview
Journal Am J Pathol
Publisher Elsevier
Specialty Pathology
Date 2004 Oct 7
PMID 15466396
Citations 48
Authors
Affiliations
Soon will be listed here.
Abstract

The survival and growth of squamous epithelial cells require signals generated by integrin-matrix interactions. After conversion to squamous cell carcinoma, the cells remain sensitive to detachment-induced anoikis, yet in tumor cell aggregates, which are matrix-deficient, these cells are capable of suprabasal survival and proliferation. Their survival is enhanced through a process we call synoikis, whereby junctional adhesions between neighboring cells generate specific downstream survival signals. Here we show that in squamous cell carcinoma cells, E-cadherin-mediated cell-cell contacts specifically induce activation of epidermal growth factor receptor (EGFR). EGFR activation in turn triggers the ERK/MAPK signaling module, leading to elevation of anti-apoptotic Bcl-2. After intercellular adhesion, formation of adherens junctions triggers the formation of E-cadherin-EGFR complexes, correlating with EGFR transactivation. Analysis of the process with a dominant-negative EGFR mutant indicated that activation of EGFR is ligand-independent. Our data implicate cell-cell adhesion-induced activation of EGFR as a cooperative mechanism that generates compensatory survival signaling, protecting malignant cells from detachment-induced death.

Citing Articles

Cell Adhesion Molecules as Modulators of the Epidermal Growth Factor Receptor.

Kozlova I, Sytnyk V Cells. 2024; 13(22).

PMID: 39594667 PMC: 11592701. DOI: 10.3390/cells13221919.


Entosis: the core mechanism and crosstalk with other cell death programs.

Kim S, Lee D, Kim S, Overholtzer M Exp Mol Med. 2024; 56(4):870-876.

PMID: 38565900 PMC: 11059358. DOI: 10.1038/s12276-024-01227-w.


Therapeutic targeting of anoikis resistance in cutaneous melanoma metastasis.

Neuendorf H, Simmons J, Boyle G Front Cell Dev Biol. 2023; 11:1183328.

PMID: 37181747 PMC: 10169659. DOI: 10.3389/fcell.2023.1183328.


Plasma membrane proteoglycans syndecan-2 and syndecan-4 engage with EGFR and RON kinase to sustain carcinoma cell cycle progression.

Beauvais D, Nelson S, Adams K, Stueven N, Jung O, Rapraeger A J Biol Chem. 2022; 298(6):102029.

PMID: 35569509 PMC: 9190016. DOI: 10.1016/j.jbc.2022.102029.


Targeting regulated cell death (RCD) with small-molecule compounds in triple-negative breast cancer: a revisited perspective from molecular mechanisms to targeted therapies.

Liao M, Qin R, Huang W, Zhu H, Peng F, Han B J Hematol Oncol. 2022; 15(1):44.

PMID: 35414025 PMC: 9006445. DOI: 10.1186/s13045-022-01260-0.


References
1.
Jost M, Huggett T, Kari C, Rodeck U . Matrix-independent survival of human keratinocytes through an EGF receptor/MAPK-kinase-dependent pathway. Mol Biol Cell. 2001; 12(5):1519-27. PMC: 34602. DOI: 10.1091/mbc.12.5.1519. View

2.
Reardon D, Contessa J, Mikkelsen R, Valerie K, Amir C, Dent P . Dominant negative EGFR-CD533 and inhibition of MAPK modify JNK1 activation and enhance radiation toxicity of human mammary carcinoma cells. Oncogene. 1999; 18(33):4756-66. DOI: 10.1038/sj.onc.1202849. View

3.
Damiano J, Hazlehurst L, Dalton W . Cell adhesion-mediated drug resistance (CAM-DR) protects the K562 chronic myelogenous leukemia cell line from apoptosis induced by BCR/ABL inhibition, cytotoxic drugs, and gamma-irradiation. Leukemia. 2001; 15(8):1232-9. DOI: 10.1038/sj.leu.2402179. View

4.
Frisch S, Screaton R . Anoikis mechanisms. Curr Opin Cell Biol. 2001; 13(5):555-62. DOI: 10.1016/s0955-0674(00)00251-9. View

5.
Ziober B, Silverman Jr S, Kramer R . Adhesive mechanisms regulating invasion and metastasis in oral cancer. Crit Rev Oral Biol Med. 2002; 12(6):499-510. DOI: 10.1177/10454411010120060401. View