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5th Asia-Pacific Summit on Cancer Therapy

Brisbane, Australia

Juliana antonipillai

Juliana antonipillai

Victoria University, Australia

Title: Inhibition of LIM kinase inhibits cancer growth

Biography

Biography: Juliana antonipillai

Abstract

LIM kinase (LIMK) regulates actin cytoskeleton via inactivation of an actin depolymerising factor cofilin and involves in cell motility, invasion and migration. Metastasis is the major cause of death in cancer patient and the factors that regulate migration and invasion considered to be a good therapeutic target for metastatic disease. We investigated the consequences of LIMK inhibition on growth and metastasis of humans and mouse cell lines and tissues with number of LIMK inhibitors. LIMK activity was reduced in tumor cells by expression of dominant-negative LIMK1 by RNA interference or with a selective LIMK inhibitor. The extent of phosphorylation of the LIMK substrate, cofilin of proliferation and invasion in 2D and 3D culture and of tumor growth and metastasis in mice were tested. Inhibition of LIMK activity efficiently reduced the pro-invasive properties of tumor cells in vitro. Tumors expressing dominant-negative LIMK1 grew more slowly and were less metastatic in mice. Our findings with number of cell permeable LIMK specific inhibitors and SiRNA suggest that LIM kinase functions as a signaling node that controls actin dynamics. LIM kinase may therefore represent a targetable enzyme for cancer treatment.

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