Skip to main content

Molecular Mechanisms of Chemosensitisation of Human Breast Carcinoma and Melanoma Cell Lines by Silencing of Integrins

Project type
Znanstveno-istraživački projekti
Research Projects
Croatian Science Foundation
Start date
Sep 1st 2014
End date
Aug 31st 2018
Total cost
1000000 HRK
More information

The recognition of molecular mechanisms involved in drug resistance may improve basic knowledge of signalling pathways involved in resistance to anticancer drugs and also improve outcomes in patients with drug-resistant cancers that have poor prognosis, such as triple negative breast cancer (TNBC) and metastatic melanoma. Integrins are cell surface molecules that mediate sensitivity to anticancer drugs, migration and invasion, and therefore represent a suitable target for therapy. This proposal investigates the molecular mechanism behind knockdown of integrins alpha v beta 3, alpha v beta 5, alpha v beta 6, alpha 3 beta 1, alpha 4 beta 1 and alpha 5 beta 1 using integrin subunit specific siRNAs (beta 3, beta 5, beta 6, alpha v, alpha 3, alpha 4 or alpha 5) and the ability of such a treatment to sensitise TNBC and melanoma cell lines to anticancer drugs paclitaxel, vincristine and cisplatin. Our next goal is to identify how specific integrin knockdown influences cell migration and invasion. The focal adhesions (FA) are sites of attachment between cells and extracellular matrix which may mediate differential cell responses by variation of FA protein composition. Therefore, the FA protein composition will be investigated before and upon integrin silencing using proteomics methodology. We will monitor formation and temporal evolution of FA in living cells during spreading or migration using reflection interference contrast microscopy (RICM). On the basis of these data, several signalling pathways will be proposed and their involvement in sensitivity to anticancer drugs, migration and invasion will be experimentally verified. Our data will contribute to the knowledge on integrin signalling pathways, structure and function of focal adhesions. The understanding of integrin pathways involved in sensitivity to anticancer drugs, migration and invasion processes may provide novel insights into biology of these cancer cells and identify new target molecules in TNBC or melanoma.

This site uses cookies.. Some of these cookies are essential, while others help us improve your experience by providing insights into how the site is being used. For more detailed information on the cookies we use, please check our Privacy Policy.

Customise settings
  • Necessary cookies enable core functionality. The website cannot function properly without these cookies, and can only be disabled by changing your browser preferences.