The chemokine receptor 7 regulates cell adhesion and migration via beta1 integrin in metastatic squamous cell carcinoma of the head and neck.
Migration and adhesion of tumor cells are essential prerequisites for the formation of metastases in malignant diseases. Chemokine receptor 7 (CCR7) has been shown to regulate integrin which can then facilitate adhesion of cancer cells to and/or migration through the extracellular matrix (ECM). In order to identify the connection between CCR7 and beta1 integrin, and the influence on cell adhesion and migration in metastatic squamous cell carcinoma of the head and neck (SCCHN). We use adhesion assays, migration assay, immunofluorescence staining, western blotting, and immunohistochemical analysis to find whether beta1 integrin can be activated by CCL19 (CCR7's ligand) and its role in SCCHN. The experiments were performed in the metastatic SCCHN cell line PCI-37B after pre-incubation of the cells with CCL19 and beta1 integrin inhibitors RGD-peptide. Our results demonstrate that CCR7 favours PCI-37B cell adhesion and migration, and induces reorganization of the actin cytoskeleton and up-expression of beta1 integrin protein. beta1 integrin inhibitor RGD-peptide can block all these effects. Taken together, our data indicate that CCR7 regulate cell adhesion and migration via beta1 integrin in metastatic SCCHN, and these results can provide a basis for new strategies in preventing metastases of SCCHN.
Li
Peng
P
Department of Oromaxillofacial-Head and Neck Surgery, School of Stomatology, China Medical University, Shenyang, Liaoning 110002, P.R. China.
Zhao
Zhen-Jin
ZJ
Liu
Fa-Yu
FY
Sun
Li-Yan
LY
Ding
Xue
X
Zhang
Wen-Zhong
WZ
Shang
De-Hao
DH
Sun
Chang-Fu
CF
D015153:Blotting, Western; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D002448:Cell Adhesion / Q000502:physiology; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000502:physiology; D005455:Fluorescent Antibody Technique; D006258:Head and Neck Neoplasms / Q000378:metabolism* / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D019012:Integrin beta1 / Q000378:metabolism*; D009361:Neoplasm Invasiveness / Q000473:pathology; D054400:Receptors, CCR7 / Q000378:metabolism*
C515370:CCR7 protein, human; D019012:Integrin beta1; D054400:Receptors, CCR7