| pubmed-article:11152677 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:11152677 | lifeskim:mentions | umls-concept:C0208355 | lld:lifeskim |
| pubmed-article:11152677 | lifeskim:mentions | umls-concept:C0140057 | lld:lifeskim |
| pubmed-article:11152677 | lifeskim:mentions | umls-concept:C0013081 | lld:lifeskim |
| pubmed-article:11152677 | lifeskim:mentions | umls-concept:C1314939 | lld:lifeskim |
| pubmed-article:11152677 | pubmed:issue | 15 | lld:pubmed |
| pubmed-article:11152677 | pubmed:dateCreated | 2001-4-11 | lld:pubmed |
| pubmed-article:11152677 | pubmed:abstractText | This study investigated the mechanism of agonist-induced opioid receptor down-regulation. Incubation of HEK 293 cells expressing FLAG-tagged delta and mu receptors with agonists caused a time-dependent decrease in opioid receptor levels assayed by immunoblotting. Pulse-chase experiments using [(35)S]methionine metabolic labeling indicated that the turnover rate of delta receptors was accelerated 5-fold following agonist stimulation. Inactivation of functional G(i) and G(o) proteins by pertussis toxin-attenuated down-regulation of the mu opioid receptor, while down-regulation of the delta opioid receptor was unaffected. Pretreatment of cells with inhibitors of lysosomal proteases, calpain, and caspases had little effect on mu and delta opioid receptor down-regulation. In marked contrast, pretreatment with proteasome inhibitors attenuated agonist-induced mu and delta receptor down-regulation. In addition, incubation of cells with proteasome inhibitors in the absence of agonists increased steady-state mu and delta opioid receptor levels. Immunoprecipitation of mu and delta opioid receptors followed by immunoblotting with ubiquitin antibodies suggested that preincubation with proteasome inhibitors promoted accumulation of polyubiquitinated receptors. These data provide evidence that the ubiquitin/proteasome pathway plays a role in agonist-induced down-regulation and basal turnover of opioid receptors. | lld:pubmed |
| pubmed-article:11152677 | pubmed:grant | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11152677 | pubmed:language | eng | lld:pubmed |
| pubmed-article:11152677 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11152677 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:11152677 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11152677 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:11152677 | pubmed:month | Apr | lld:pubmed |
| pubmed-article:11152677 | pubmed:issn | 0021-9258 | lld:pubmed |
| pubmed-article:11152677 | pubmed:author | pubmed-author:HowellsR DRD | lld:pubmed |
| pubmed-article:11152677 | pubmed:author | pubmed-author:ChinenNN | lld:pubmed |
| pubmed-article:11152677 | pubmed:author | pubmed-author:ChaturvediKK | lld:pubmed |
| pubmed-article:11152677 | pubmed:author | pubmed-author:BandariPP | lld:pubmed |
| pubmed-article:11152677 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:11152677 | pubmed:day | 13 | lld:pubmed |
| pubmed-article:11152677 | pubmed:volume | 276 | lld:pubmed |
| pubmed-article:11152677 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:11152677 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:11152677 | pubmed:pagination | 12345-55 | lld:pubmed |
| pubmed-article:11152677 | pubmed:dateRevised | 2007-11-14 | lld:pubmed |
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| pubmed-article:11152677 | pubmed:year | 2001 | lld:pubmed |
| pubmed-article:11152677 | pubmed:articleTitle | Proteasome involvement in agonist-induced down-regulation of mu and delta opioid receptors. | lld:pubmed |
| pubmed-article:11152677 | pubmed:affiliation | Department of Biochemistry, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark, New Jersey 07103, USA. | lld:pubmed |
| pubmed-article:11152677 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:11152677 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
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