Clonal origins of human endometrial cancer
El-Minia Medical Bulletin. 2003; 14 (2): 179-193
en Inglés
| IMEMR
| ID: emr-62084
ABSTRACT
The aim of this study was to analyze the X inactivation in DNA extracted from microdissected endometrial carcinoma by Hpa II restriction and PCR of the androgen receptor exon I CAG polymorphism. The results revealed that monoclonality was confirmed in 105/133 samples of carcinoma cells from 31/32 informative endometrial cancers. Clonality was identical in seven cases. Unexpectedly, four of twelve cancers with two or more monoclonal samples available were mosaic [polyclonal] in respect of X chromosome inactivation between morphologically homogeneous tumor cell samples. It was concluded that concordant clonality supports a common clonal origin of high grade and low grade endometrial cancers, but frequent mosaic X inactivation in endometrial cancer cannot be explained by non-tumor cell contamination. These carcinomas are probably multiclonal. Possible mechanisms include simultaneous transformation of cell groups straddling X chromosome inactivation, or recruitment of bystander stem cells by DNA transfer from necrotic or apoptotic tumor cells
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Índice:
IMEMR (Mediterraneo Oriental)
Asunto principal:
Cromosoma X
/
Reacción en Cadena de la Polimerasa
/
Clonación Molecular
Límite:
Femenino
/
Humanos
Idioma:
Inglés
Revista:
El-Minia Med. Bull.
Año:
2003
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