| pubmed-article:19942609 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:19942609 | lifeskim:mentions | umls-concept:C0023823 | lld:lifeskim |
| pubmed-article:19942609 | lifeskim:mentions | umls-concept:C0004391 | lld:lifeskim |
| pubmed-article:19942609 | lifeskim:mentions | umls-concept:C0033385 | lld:lifeskim |
| pubmed-article:19942609 | lifeskim:mentions | umls-concept:C1548602 | lld:lifeskim |
| pubmed-article:19942609 | pubmed:issue | 3 | lld:pubmed |
| pubmed-article:19942609 | pubmed:dateCreated | 2010-3-5 | lld:pubmed |
| pubmed-article:19942609 | pubmed:abstractText | Epidemiological studies showed that high levels of oxidized low-density lipoproteins (oxLDLs) are associated with increased cancer risk. We examined the direct effect of physiologic concentrations oxLDL on cancer cells. OxLDLs were cytotoxic and activate both apoptosis and autophagy. OxLDLs have ligands for peroxisome proliferator-activated receptor gamma and upregulated proline oxidase (POX) through this nuclear receptor. We identified 7-ketocholesterol (7KC) as a main component responsible for the latter. To elucidate the role of POX in oxLDL-mediated cytotoxicity, we knocked down POX via small interfering RNA and found that this (i) further reduced viability of cancer cells treated with oxLDL; (ii) decreased oxLDL-associated reactive oxygen species generation; (iii) decreased autophagy measured via beclin-1 protein level and light-chain 3 protein (LC3)-I into LC3-II conversion. Using POX-expressing cell model, we established that single POX overexpression was sufficient to activate autophagy. Thus, it led to autophagosomes accumulation and increased conversion of LC3-I into LC3-II. Moreover, beclin-1 gene expression was directly dependent on POX catalytic activity, namely the generation of POX-dependent superoxide. We conclude that POX is critical in the cellular response to the noxious effects of oxLDL by activating protective autophagy. | lld:pubmed |
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| pubmed-article:19942609 | pubmed:language | eng | lld:pubmed |
| pubmed-article:19942609 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:19942609 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:19942609 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:19942609 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:19942609 | pubmed:month | Mar | lld:pubmed |
| pubmed-article:19942609 | pubmed:issn | 1460-2180 | lld:pubmed |
| pubmed-article:19942609 | pubmed:author | pubmed-author:TomP APA | lld:pubmed |
| pubmed-article:19942609 | pubmed:author | pubmed-author:PhangJames... | lld:pubmed |
| pubmed-article:19942609 | pubmed:author | pubmed-author:ZabirnykOlgaO | lld:pubmed |
| pubmed-article:19942609 | pubmed:author | pubmed-author:KhalilShadiS | lld:pubmed |
| pubmed-article:19942609 | pubmed:author | pubmed-author:SharmaAnitA | lld:pubmed |
| pubmed-article:19942609 | pubmed:issnType | Electronic | lld:pubmed |
| pubmed-article:19942609 | pubmed:volume | 31 | lld:pubmed |
| pubmed-article:19942609 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:19942609 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:19942609 | pubmed:pagination | 446-54 | lld:pubmed |
| pubmed-article:19942609 | pubmed:dateRevised | 2010-9-27 | lld:pubmed |
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