Linked Life Data

10383126

Source:http://linkedlifedata.com/resource/pubmed/id/10383126

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
1999-7-19
pubmed:abstractText
MYC gene overexpression was identified recently as a downstream step at the end of the Wnt/APC/beta-catenin pathway dysregulation observed in colorectal cancer (T-C. He et al., Science (Washington DC), 281: 1509-1512, 1998). It thus appears that an excess of c-myc protein is a primary cause of numerous cancers. In breast cancer, MYC has been studied mostly at the DNA level because of the poor quality of available antibodies against the protein product. The renewed interest in MYC calls for a sensitive and accurate method for analyzing MYC overexpression in breast tumors. We have developed a real-time quantitative reverse transcription-PCR assay based on TaqMan fluorescence methodology to quantify the MYC mRNA copy number. We validated the method on a large series of breast tumors. MYC gene overexpression was observed in 29 of 134 (22%) breast tumor RNAs, ranging from 3.2 to 19 times the level in normal breast tissues. These data imply that dysregulated MYC gene expression is potentially involved in the pathogenesis of breast cancer, especially by favoring local cell proliferation. We also found that MYC gene overexpression was rarely due to an increased MYC gene copy number in breast cancer. This new, simple, rapid, and semiautomated method will be useful for screening cancer patients for MYC overexpression and will prove a powerful tool in large, randomized, prospective, cooperative group trials and in the MYC-based therapy project.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0008-5472
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
59
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2759-65
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Quantitation of MYC gene expression in sporadic breast tumors with a real-time reverse transcription-PCR assay.
pubmed:affiliation
Laboratoire de Génétique Moléculaire, Faculté des Sciences Pharmaceutiques et Biologiques de Paris, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't