Linked Life Data

19686387

Source:http://linkedlifedata.com/resource/pubmed/id/19686387

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2009-9-23
pubmed:abstractText
The histogenesis of retinoblastoma tumors remains controversial, with the cell-of-origin variably proposed to be an uncommitted retinal progenitor cell, a bipotent committed cell, or a cell committed to a specific lineage. Here, we examine the expression of two members of the orthodenticle family implicated in photoreceptor and bipolar cell differentiation, cone-rod homeobox, CRX, and orthodenticle homeobox 2, OTX2, in normal human retina, retinoblastoma cell lines and retinoblastoma tumors. We show that CRX and OTX2 have distinct expression profiles in the developing human retina, with CRX first expressed in proliferating cells and cells committed to the bipolar lineage, and OTX2 first appearing in the photoreceptor lineage. In the mature retina, CRX levels are highest in photoreceptor cells whereas OTX2 is preferentially found in bipolar cells and in the retinal pigmented epithelium. Both CRX and OTX2 are widely expressed in retinoblastoma cell lines and in retinoblastoma tumors, although CRX is more abundant than OTX2 in the differentiated elements of retinoblastoma tumors such as large rosettes, Flexner-Wintersteiner rosettes and fleurettes. Widespread expression of CRX and OTX2 in retinoblastoma tumors and cell lines suggests a close link between the cell-of-origin of retinoblastoma tumors and cells expressing CRX and OTX2.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1471-4159
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
111
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
250-63
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Differential CRX and OTX2 expression in human retina and retinoblastoma.
pubmed:affiliation
Department of Oncology, University of Alberta, Edmonton, Alberta, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't