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| Author(s): |
Emerson de Souza Santos
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI) |
| Defense date: | 2011-10-19 |
| Examining board members: |
Ruy Gastaldoni Jaeger;
Edgard Graner;
Anselmo Sigari Moriscot
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| Advisor: | Ruy Gastaldoni Jaeger |
| Abstract | |
Human breast cancer constitutes a worldwide health care problem. During cancer progression, tumor cells are engaged in an interplay with their microenvironment. Studies have shown that peptides derived from laminin are involved in tumor progression. Among them, C16 (KAFDITYVRLKF), derived from laminin gamma-1 chain, is a cell-adhesive peptide that increases cell migration, invasion, metastasis and angiogenesis. This prompted us to analyze whether C16 would regulate gene expression in human breast cancer cells (MDA-MB-231). Cells were treated with C16 or scrambled peptide control (FKLRVYTIDFAK) for 24 hours and gene expression was analyzed by microarray. Eighty genes were regulated by C16, including genes associated with cancer. Among them, FGFR3, GPNMB and SPOCK1 expression was increased by C16, as confirmed by qPCR. C16 also increased MDA-MB-231 cell invasion. However, no effect on cell proliferation and apoptosis was observed. Concluding, our data suggest that C16 regulates gene expression and enhances invasion of metastatic MDA-MB-231 breast cancer cells. (AU) | |