| pubmed-article:11134066 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:11134066 | lifeskim:mentions | umls-concept:C0205145 | lld:lifeskim |
| pubmed-article:11134066 | lifeskim:mentions | umls-concept:C0031308 | lld:lifeskim |
| pubmed-article:11134066 | lifeskim:mentions | umls-concept:C0070798 | lld:lifeskim |
| pubmed-article:11134066 | lifeskim:mentions | umls-concept:C0392747 | lld:lifeskim |
| pubmed-article:11134066 | lifeskim:mentions | umls-concept:C0443172 | lld:lifeskim |
| pubmed-article:11134066 | lifeskim:mentions | umls-concept:C0392752 | lld:lifeskim |
| pubmed-article:11134066 | lifeskim:mentions | umls-concept:C0205184 | lld:lifeskim |
| pubmed-article:11134066 | pubmed:issue | 7 | lld:pubmed |
| pubmed-article:11134066 | pubmed:dateCreated | 2001-1-25 | lld:pubmed |
| pubmed-article:11134066 | pubmed:abstractText | Phagocytosis requires localized and transient remodeling of actin filaments. Phosphoinositide signaling is believed to play an important role in cytoskeletal organization, but it is unclear whether lipids, which can diffuse along the membrane, can mediate the focal actin assembly required for phagocytosis. We used imaging of fluorescent chimeras of pleckstrin homology and C1 domains in live macrophages to monitor the distribution of phosphatidylinositol-4,5-bisphosphate (4,5-PIP(2)) and diacylglycerol, respectively, during phagocytosis. Our results reveal a sequence of exquisitely localized, coordinated steps in phospholipid metabolism: a focal, rapid accumulation of 4,5-PIP(2) accompanied by recruitment of type Ialpha phosphatidylinositol phosphate kinase to the phagosomal cup, followed by disappearance of the phosphoinositide as the phagosome seals. Loss of 4,5-PIP(2) correlated with mobilization of phospholipase Cgamma (PLCgamma) and with the localized formation of diacylglycerol. The presence of 4, 5-PIP(2) and active PLCgamma at the phagosome was shown to be essential for effective particle ingestion. The temporal sequence of phosphoinositide metabolism suggests that accumulation of 4,5-PIP(2) is involved in the initial recruitment of actin to the phagocytic cup, while its degradation contributes to the subsequent cytoskeletal remodeling. | lld:pubmed |
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| pubmed-article:11134066 | pubmed:language | eng | lld:pubmed |
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| pubmed-article:11134066 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:11134066 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:11134066 | pubmed:month | Dec | lld:pubmed |
| pubmed-article:11134066 | pubmed:issn | 0021-9525 | lld:pubmed |
| pubmed-article:11134066 | pubmed:author | pubmed-author:MeyerTT | lld:pubmed |
| pubmed-article:11134066 | pubmed:author | pubmed-author:GrinsteinSS | lld:pubmed |
| pubmed-article:11134066 | pubmed:author | pubmed-author:AndersonRR | lld:pubmed |
| pubmed-article:11134066 | pubmed:author | pubmed-author:WellsAA | lld:pubmed |
| pubmed-article:11134066 | pubmed:author | pubmed-author:BotelhoR JRJ | lld:pubmed |
| pubmed-article:11134066 | pubmed:author | pubmed-author:YorkJ DJD | lld:pubmed |
| pubmed-article:11134066 | pubmed:author | pubmed-author:TeruelMM | lld:pubmed |
| pubmed-article:11134066 | pubmed:author | pubmed-author:DierckmanRR | lld:pubmed |
| pubmed-article:11134066 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:11134066 | pubmed:day | 25 | lld:pubmed |
| pubmed-article:11134066 | pubmed:volume | 151 | lld:pubmed |
| pubmed-article:11134066 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:11134066 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:11134066 | pubmed:pagination | 1353-68 | lld:pubmed |
