Publication Date:
1987-12-11
Description:
Vasoactive intestinal peptide (VIP) is a neuropeptide with broad tissue distribution. Although its precise function is unknown, it is thought to exert its effect, at least in part, by interacting with cell surface receptors. Nuclear receptors for VIP have now been identified by specific binding of 125I-labeled VIP to nuclei of a human colonic adenocarcinoma cell line (HT29) and by cross-linking of 125I-labeled VIP to its receptor on intact nuclei. In contrast, 125I-labeled transferrin shows only background binding to nuclei but significant binding to intact cells. Purity of the isolated nuclei was further substantiated by electron microscopy. The apparent molecular sizes of the VIP--cross-linked nuclear and cell surface receptors are similar but not identical.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Omary, M B -- Kagnoff, M F -- DK07202/DK/NIDDK NIH HHS/ -- DK35108/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1987 Dec 11;238(4833):1578-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, San Diego, La Jolla 92093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2825352" target="_blank"〉PubMed〈/a〉
Keywords:
Adenocarcinoma/*metabolism/ultrastructure
;
Cell Line
;
Cell Nucleus/*metabolism/ultrastructure
;
Colonic Neoplasms/*metabolism/ultrastructure
;
Humans
;
Kinetics
;
Microscopy, Electron
;
Receptors, Gastrointestinal Hormone/*metabolism
;
Receptors, Vasoactive Intestinal Peptide
;
Vasoactive Intestinal Peptide/*metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
