From owner-btk-mca@hgmp.mrc.ac.uk Mon Jun 11 21:37:05 2001 Return-Path: Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id F15CF17ACC for ; Mon, 11 Jun 2001 21:37:03 +0100 (BST) Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 166DF17B08 for ; Mon, 11 Jun 2001 21:36:52 +0100 (BST) Received: from niobium.hgmp.mrc.ac.uk (niobium [193.62.192.41]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id B80FF17B47 for ; Mon, 11 Jun 2001 21:36:35 +0100 (BST) Received: (from news@localhost) by niobium.hgmp.mrc.ac.uk (8.9.3+Sun/8.8.8) id VAA17254 for btk-mca-list@hgmp.mrc.ac.uk; Mon, 11 Jun 2001 21:31:39 +0100 (BST) X-Authentication-Warning: niobium.hgmp.mrc.ac.uk: news set sender to using -f From: hines@pharm.med.upenn.edu (John Hines) X-Newsgroups: bionet.metabolic-reg Subject: in search of an insulin receptor antagonist Date: Mon, 11 Jun 2001 16:29:52 -0400 Organization: University of Pennsylvania Lines: 13 Message-ID: To: btk-mca@hgmp.mrc.ac.uk Sender: owner-btk-mca@hgmp.mrc.ac.uk Precedence: bulk Is there such a thing? I've never heard of one, although I am, admittedly, very new to the area. I've been able to stimulate the MAP kinase pathway in a cell line by treating with insulin (1 uM). However, I'd feel more comfortable with the conclusion that there are functional insulin receptors present if I could block the signaling with an antagonist. Only I've never heard of one. Is there an antagonist for insulin receptors? I'd be grateful for any information/insights. (please reply to hines@pharm.med.upenn.edu) John .