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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Novel Processed Form of Syndecan-1 Shed from SCC-9 Cells Plays a Role in Cell Migration

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Aragao, Annelize Z. B. [1] ; Belloni, Marilia [1] ; Simabuco, Fernando M. [1] ; Zanetti, Mariana R. [1] ; Yokoo, Sami [1] ; Domingues, Romenia R. [1] ; Kawahara, Rebeca [1] ; Pauletti, Bianca A. [1] ; Goncalves, Anderson [1] ; Agostini, Michelle [2] ; Graner, Edgard [2] ; Coletta, Ricardo D. [2] ; Fox, Jay W. [3] ; Paes Leme, Adriana F. [1]
Total Authors: 14
Affiliation:
[1] Brazilian Biosci Natl Lab CNPEM, Mass Spectrometry Lab, Campinas, SP - Brazil
[2] Univ Estadual Campinas, Piracicaba Sch Dent, Piracicaba - Brazil
[3] Univ Virginia, Sch Med, Charlottesville, VA 22908 - USA
Total Affiliations: 3
Document type: Journal article
Source: PLoS One; v. 7, n. 8 AUG 15 2012.
Web of Science Citations: 25
Abstract

The extracellular milieu is comprised in part by products of cellular secretion and cell surface shedding. The presence of such molecules of the sheddome and secretome in the context of the extracellular milieu may have important clinical implications. In cancer they have been hypothesized to play a role in tumor growth and metastasis. The objective of this study was to evaluate whether the sheddome/secretome from two cell lines could be correlated with their potential for tumor development. Two epithelial cell lines, HaCaT and SCC-9, were chosen based on their differing abilities to form tumors in animal models of tumorigenesis. These cell lines when stimulated with phorbol-ester (PMA) showed different characteristics as assessed by cell migration, adhesion and higher gelatinase activity. Proteomic analysis of the media from these treated cells identified interesting, functionally relevant differences in their sheddome/secretome. Among the shed proteins, soluble syndecan-1 was found only in media from stimulated tumorigenic cells (SCC-9) and its fragments were observed in higher amount in the stimulated tumorigenic cells than stimulated non-tumorigenic cells (HaCaT). The increase in soluble syndecan-1 was associated with a decrease in membrane-bound syndecan-1 of SCC-9 cells after PMA stimuli. To support a functional role for soluble syndecan-1 fragments we demonstrated that the synthetic syndecan-1 peptide was able to induce cell migration in both cell lines. Taken together, these results suggested that PMA stimulation alters the sheddome/secretome of the tumorigenic cell line SCC-9 and one such component, the syndecan-1 peptide identified in this study, was revealed to promote migration in these epithelial cell lines. (AU)

FAPESP's process: 09/18301-1 - Study of the regulation of recombinant ADAM-17 by determining phosphorylation sites of the cytoplasmic domain and its ligands in normal and cancer cells.
Grantee:Annelize Zambon Barbosa Aragão
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 10/09642-7 - Analysis of proteins and peptides in oral squamous cell carcinoma using an experimental model for the development of tumors in animals.
Grantee:Mariana Rodrigues Zanetti
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 10/19278-0 - Study of regulation of ADAMs in oral cancer
Grantee:Adriana Franco Paes Leme
Support type: Research Grants - Young Investigators Grants