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2004 NOV 3 - (NewsRx.com & NewsRx.net) -- B-RAF is a therapeutic target in melanoma.
According to a study from England, "B-RAF is a serine/threonine-specific protein kinase that is mutated in approximately 70% of human melanomas. However, the role of this signalling molecule in cancer is unclear. Here, we show that ERK is constitutively activated in melanoma cells expressing oncogenic B-RAF and that this activity is required for proliferation."
"B-RAF depletion by siRNA blocks ERK activity," reported M. Karasarides and colleagues, "whereas A-RAF and C-RAF depletion do not affect ERK signalling. B-RAF depletion inhibits DNA synthesis and induces apoptosis in three melanoma cell lines and we show that the RAF inhibitor BAY43-9006 also blocks ERK activity, inhibits DNA synthesis and induces cell death in these cells."
"BAY43-9006 targets B-RAF signalling in vivo and induces a substantial growth delay in melanoma tumor xenografts," investigators said.
"Our data demonstrate that oncogenic ...
Source: HighBeam Research, B-RAF is therapeutic target in melanoma.