Linked Life Data

17922027

Source:http://linkedlifedata.com/resource/pubmed/id/17922027

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
2008-3-27
pubmed:abstractText
ATP-dependent SWI/SNF chromatin remodeling complexes regulate cell-cycle and play critical roles in a variety of differentiation pathways. The core subunit SNF5/INI1 is a tumor suppressor that is inactivated in a highly aggressive childhood cancer of unknown cellular origin, termed malignant rhabdoid tumor (MRT). The highly undifferentiated phenotype of this tumor suggests that the loss-of-function of hSNF5/INI1 impairs specific differentiation programs of the MRT parental cell. Based on the hypothesis that these programs might be reinitialized upon hSNF5/INI1 re-expression in MRTs, we show that some MRT cell lines can differentiate toward the adipogenic lineage. We further show that the knock down of the SNF5/INI1 subunit abrogates adipocyte differentiation of murine 3T3-L1 preadipocytes and of human mesenchymal stem cells. Finally, we provide evidence that hSNF5/INI1 cooperates with C/EBPbeta and PPARgamma2 transcriptional regulators to activate the expression of adipocyte-specific genes. These data indicate that not only the ATPase subunit of the SWI/SNF complex, but also SNF5/INI1 is required for adipocyte differentiation. They further show that MRT cell lines harbor an adipogenic differentiation potential and that the tumor suppressor role of the SNF5/INI1 subunit may rely on its ability to regulate the balance between cell proliferation and differentiation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1476-5594
pubmed:author
pubmed:issnType
Electronic
pubmed:day
27
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2035-44
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
The requirement for SNF5/INI1 in adipocyte differentiation highlights new features of malignant rhabdoid tumors.
pubmed:affiliation
Institut Curie, Research Section, Paris, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't