FANCD2 is involved in DNA damage repair and maintenance of chromosome stability.The purpose of this study was to investigate the expression of FANCD2 in sporadic breast cancer tissues and its association with clinicop...FANCD2 is involved in DNA damage repair and maintenance of chromosome stability.The purpose of this study was to investigate the expression of FANCD2 in sporadic breast cancer tissues and its association with clinicopathological features.A total of 162 Chinese women with invasive breast carcinoma who had no family history in first-degree relatives and 12 normal breast tissues were examined.The expression of FANCD2 was detected by immunohistochemical staining based on a tissue microarray technique.SAS system was used to analyze the data.Twenty-one out of the 162 invasive breast cancers(13%) were negative for FANCD2.The mean percentage of FANCD2 positive cells was significantly lower in breast cancers than in controls(P0.05).It was suggested that FANCD2 may play a critical role in breast carcinogenesis.It may become a valuable and independent marker for identifying women with sporadic breast cancer and evaluating the prognosis.展开更多
目的:探讨RAR-β2基因(retinoic ac id receptorβ2 gene)启动子在散发性乳腺癌患者血浆中异常甲基化状况。方法:用甲基化特异PCR(MSP)法和实时荧光定量PCR法对62例散发性乳腺癌患者血浆和15例良性乳腺增生患者血浆中的RAR-β2基因启动...目的:探讨RAR-β2基因(retinoic ac id receptorβ2 gene)启动子在散发性乳腺癌患者血浆中异常甲基化状况。方法:用甲基化特异PCR(MSP)法和实时荧光定量PCR法对62例散发性乳腺癌患者血浆和15例良性乳腺增生患者血浆中的RAR-β2基因启动子异常甲基化状况进行检测。结果:散发性乳腺癌患者血清中37%(28/62)发生了RAR-β2基因启动子甲基化,良性乳腺增生患者中均未检测到RAR-β2基因的甲基化。RAR-β2基因启动子甲基化状态与淋巴结转移和临床分期有相关性(P<0.05)。结论:乳腺癌患者外周血浆中RAR-β2基因启动子异常甲基化是散发性乳腺癌发生的早期事件,有望成为乳腺癌早期诊断的指标。展开更多
文摘FANCD2 is involved in DNA damage repair and maintenance of chromosome stability.The purpose of this study was to investigate the expression of FANCD2 in sporadic breast cancer tissues and its association with clinicopathological features.A total of 162 Chinese women with invasive breast carcinoma who had no family history in first-degree relatives and 12 normal breast tissues were examined.The expression of FANCD2 was detected by immunohistochemical staining based on a tissue microarray technique.SAS system was used to analyze the data.Twenty-one out of the 162 invasive breast cancers(13%) were negative for FANCD2.The mean percentage of FANCD2 positive cells was significantly lower in breast cancers than in controls(P0.05).It was suggested that FANCD2 may play a critical role in breast carcinogenesis.It may become a valuable and independent marker for identifying women with sporadic breast cancer and evaluating the prognosis.
文摘目的:探讨RAR-β2基因(retinoic ac id receptorβ2 gene)启动子在散发性乳腺癌患者血浆中异常甲基化状况。方法:用甲基化特异PCR(MSP)法和实时荧光定量PCR法对62例散发性乳腺癌患者血浆和15例良性乳腺增生患者血浆中的RAR-β2基因启动子异常甲基化状况进行检测。结果:散发性乳腺癌患者血清中37%(28/62)发生了RAR-β2基因启动子甲基化,良性乳腺增生患者中均未检测到RAR-β2基因的甲基化。RAR-β2基因启动子甲基化状态与淋巴结转移和临床分期有相关性(P<0.05)。结论:乳腺癌患者外周血浆中RAR-β2基因启动子异常甲基化是散发性乳腺癌发生的早期事件,有望成为乳腺癌早期诊断的指标。
