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http://purl.uniprot.org/citations/15297164http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/15297164http://www.w3.org/2000/01/rdf-schema#comment"

Objective

BAG-1 has anti-apoptotic actions and is known to bind BCL-2 and steroid receptors. High levels of BAG-1 have been implicated as a prognostic indicator in breast cancer. Whether this observation can be generalized to endometrial cancer remains unknown.

Methods

IRB permission was obtained for use of human discarded tissue. Immunohistochemical analyses were performed on: proliferative endometrium (PEM, 6), secretory endometrium (SEM, 28), "low-grade" neoplastic lesions (complex atypical hyperplasia and grade 1 endometrial adenocarcinomas) (19), and "high-grade" cancers (grade 2 and 3 endometrial adenocarcinomas) (13). The level of total BAG-1 and its isoforms was evaluated by Western blot in lysates from Ishikawa cells (grade 1), MFE 296 cells (grade 2), and SK-UT(2) cells (grade 3).

Results

The proportion of "high-grade" cancers with positive cytoplasmic staining for BAG-1 was higher than that of secretory endometrium (P = 0.006). Additionally, the proportion of specimens with positive staining for nuclear BAG-1 expression was significantly higher among high-grade carcinoma specimens compared to secretory specimens (P = 0.009). A high proportion (91%) of all specimens were positive for BCL-2, limiting the ability to subcategorize the other variables analyzed. There was no relationship between positive nuclear BAG-1 expression and either estrogen receptor (ER) or progesterone receptor (PR) expression. BAG-1 was expressed in the three cell lines evaluated and total BAG-1 level was not different among the different cell lines.

Conclusion

BAG-1 is expressed in the endometrium. High-grade cancers stain more frequently than secretory endometrium for both cytoplasmic and nuclear BAG-1 expression, perhaps indicating an association between expression of BAG-1 and prognosis."xsd:string
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http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/author"Moriyama T."xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/author"Duska L.R."xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/author"Littell R.D."xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/author"Lynch M.P."xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/author"Rueda B.R."xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/author"Oliva E."xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/author"Debernardo R."xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/date"2004"xsd:gYear
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/name"Gynecol Oncol"xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/pages"289-295"xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/title"BAG-1 expression in normal and neoplastic endometrium."xsd:string
http://purl.uniprot.org/citations/15297164http://purl.uniprot.org/core/volume"94"xsd:string
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