| pubmed-article:15851691 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C0043047 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C0596901 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C0178539 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C0017725 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C0333056 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C2699153 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C1269955 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C1704970 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C0085319 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C1709059 | lld:lifeskim |
| pubmed-article:15851691 | lifeskim:mentions | umls-concept:C0392752 | lld:lifeskim |
| pubmed-article:15851691 | pubmed:issue | 18 | lld:pubmed |
| pubmed-article:15851691 | pubmed:dateCreated | 2005-5-4 | lld:pubmed |
| pubmed-article:15851691 | pubmed:abstractText | Dynamic membrane protrusions such as lamellipodia and filopodia are driven by actin polymerization and often hijacked by intracellular microbes to enter host cells. The overall rate of membrane protrusion depends on the actin polymerization rate and the increase of localized cell volume. Although the signaling pathways involving actin polymerization are well characterized, the molecular mechanisms regulating local cell volume associated with membrane protrusion are unclear. Cryptosporidium parvum, an intracellular parasite, depends on host-cell membrane protrusion to accomplish cell entry and form the parasitophorous vacuole. Here, we report that C. parvum infection of cholangiocytes recruits host-cell SGLT1, a Na+/glucose cotransporter, and aquaporin 1 (AQP1), a water channel, to the attachment site. SGLT1-dependent glucose uptake occurs at the attachment site. Concordantly, the region of attachment displays localized water influx that is inhibited by either suppression of AQP1 by means of AQP1-small interfering RNA (siRNA) or inhibition of SGLT1 by a specific pharmacologic inhibitor, phlorizin. Inhibition of SGLT1 does not affect actin accumulation but decreases the membrane protrusion at the attachment site. Moreover, functional inhibition of host-cell AQP1 and SGLT1 hampers C. parvum invasion of cholangiocytes. Thus, glucose-driven, AQP-mediated localized water influx is involved in the membrane protrusion during C. parvum cellular invasion, phenomena that may also be relevant to the mechanisms of cell membrane protrusion in general. | lld:pubmed |
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| pubmed-article:15851691 | pubmed:language | eng | lld:pubmed |
| pubmed-article:15851691 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:15851691 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:15851691 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:15851691 | pubmed:month | May | lld:pubmed |
| pubmed-article:15851691 | pubmed:issn | 0027-8424 | lld:pubmed |
| pubmed-article:15851691 | pubmed:author | pubmed-author:LaRussoNichol... | lld:pubmed |
| pubmed-article:15851691 | pubmed:author | pubmed-author:ChenXian-Ming... | lld:pubmed |
| pubmed-article:15851691 | pubmed:author | pubmed-author:SplinterPatri... | lld:pubmed |
| pubmed-article:15851691 | pubmed:author | pubmed-author:NelsonJeremy... | lld:pubmed |
| pubmed-article:15851691 | pubmed:author | pubmed-author:HuangBing QBQ | lld:pubmed |
| pubmed-article:15851691 | pubmed:author | pubmed-author:O'HaraSteven... | lld:pubmed |
| pubmed-article:15851691 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:15851691 | pubmed:day | 3 | lld:pubmed |
| pubmed-article:15851691 | pubmed:volume | 102 | lld:pubmed |
| pubmed-article:15851691 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:15851691 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:15851691 | pubmed:pagination | 6338-43 | lld:pubmed |
| pubmed-article:15851691 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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