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Polymeric Delivery of siRNA against Integrin‐β1 (CD29) to Reduce Attachment and Migration of Breast Cancer Cells
Author(s) -
Meenakshi Sundaram Daniel Nisakar,
Kucharski Cezary,
Parmar Manoj B.,
KC Remant Bahadur,
Uludağ Hasan
Publication year - 2017
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201600430
Subject(s) - integrin , small interfering rna , cancer research , breast cancer , cancer cell , fibronectin , cell migration , chemistry , gene silencing , microbiology and biotechnology , cell adhesion , cancer , extracellular matrix , cell , biology , medicine , transfection , biochemistry , gene
Cell surface integrins, which play important roles in the survival, proliferation, migration, and invasion of cancer cells, are a viable target for treatment of metastatic breast cancer. This line of therapy still remains challenging due to the lack of proper identification and validation of effective targets as well as the lack of suitable therapeutic agents for treatment. The focus is on one such molecular target for this purpose, namely integrin‐β1, and effective lowering of integrin‐β1 levels on a breast cancer model (MDA‐MB‐231 cells) is achieved by delivering a dicer‐substrate short interfering RNA (siRNA) targeting integrin‐β1 with lipid‐modified low molecular weight polyethylenimine polymers. Reduction of integrin‐β1 levels leads to reduced adhesion of MDA‐MB‐231 cells to extracellular matrix component fibronectin as well as to human bone marrow cells. A reduced migration of the breast cancer cells is also observed after integrin‐β1 silencing in “scratch” and “transwell” migration assays. These results highlight the importance of integrin‐β1 for the migration of metastatic breast cancer cells by effectively silencing this target with a practical dose of siRNA.