Abstract

Activation of opioid receptors have been implicated in the modulation of cell proliferation and the E2F family of transcription factors may play a role in opioid inhibition of DNA synthesis. Gel shift assays and Western blotting of nuclear extracts from NG108-15 cells revealed increased E2F1 DNA binding activity and higher levels of E2F1 following activation of δ-opioid receptors. It is suggested that DADLE-induced regulation of E2F DNA binding activity involves ERKs.

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