PCDH10基因在前列腺癌組織中的甲基化測定及臨床意義
發(fā)布時間:2019-01-11 19:58
【摘要】:目的 目前在臨床中對前列腺癌的早期診斷缺少特異性較高的生物學(xué)指標(biāo)。我們通過檢測前列腺癌組織、良性前列腺增生組織以及前列腺癌細(xì)胞株中基因PCDH10的甲基化情況,并隨后對樣本所對應(yīng)前列腺癌患者的臨床資料如患者的前列腺特異性抗原(PSA)、Gleason評分、臨床分期以及患者的年齡等進行收集,研究基因PCDH10的甲基化程度是否與上述臨床數(shù)據(jù)具有一定的相關(guān)性。從而為研究前列腺癌的發(fā)病原因以及找到一種早期而有效的前列腺癌的生物診斷指標(biāo)奠定理論基礎(chǔ)和提供實驗依據(jù)。 方法 1、收集2012年9月-2013年5月在遼寧醫(yī)學(xué)院附屬第一醫(yī)院及北京大學(xué)第一醫(yī)院泌尿外科住院并行腹腔鏡前列腺癌根治術(shù)或經(jīng)尿道前列腺電切術(shù)的患者的術(shù)后標(biāo)本,編號后保存于-80℃冰箱中。 2、選取Du145、PC3、Lncap共3株前列腺癌細(xì)胞系,1株人類正常前列腺細(xì)胞系按常規(guī)進行培養(yǎng)。 3、對所收集的前列腺癌以及前列腺增生組織進行DNA提取。 4、對所提取的DNA進行亞硫酸鹽修飾。 5、對目標(biāo)亞硫酸鹽修飾后的DNA分別行PCR擴增。 6、整理分析PCDH10基因甲基化與患者的前列腺特異性抗原(PSA)、Gleason評分、臨床分期以及患者的年齡等臨床資料間統(tǒng)計學(xué)意義。 結(jié)果 1、3株前列腺癌細(xì)胞系中有2株檢出PCDH10基因甲基化;40例前列腺癌樣本中24例檢出PCDH10基因甲基化,比率為60.0%,,13例前列腺增生組織中未檢出PCDH10基因甲基化。 2、PCDH10基因出現(xiàn)甲基化與未出現(xiàn)甲基化的患者相比,二者在年齡、前列腺特異性抗原(PSA)和臨床分期等指標(biāo)的差異無統(tǒng)計學(xué)意義(P>0.05),但我們發(fā)現(xiàn)Gleason評分8~10分組的前列腺癌樣本的甲基化率明顯高于Gleason評分4~7分組所對應(yīng)的前列腺癌樣本的甲基化率。兩組在Gleason評分的差異存在統(tǒng)計學(xué)意義(P<0.05)。 結(jié)論 1、PCDH10基因在前列腺癌細(xì)胞株中的甲基化率為67.7%,PCDH10基因在前列腺癌組織樣本中的甲基化率為60%,提示PCDH10基因在前列腺癌中處于較高的甲基化率。 2、與PCDH10在前列腺癌中的甲基化情況不同,在13例前列腺增生組織中未檢出PCDH10基因甲基化。兩組間差異明顯具有統(tǒng)計學(xué)意義 3、Gleason評分8~10組的前列腺癌樣本的甲基化率明顯高于Gleason評分4~7分組所對應(yīng)的前列腺癌樣本的甲基化率,我們由此可以作出以下推斷:病理分期越高,尤其是Gleason評分越高,PCDH10基因的CpG島更易發(fā)生甲基化,其甲基化率也就越高。因此推測PCDH10基因的甲基化可能在前列腺癌的發(fā)生發(fā)展過程中起到了潛在甚至關(guān)鍵性的作用。
[Abstract]:Objective to evaluate the lack of specificity in early diagnosis of prostate cancer. We measured the methylation of gene PCDH10 in prostate cancer tissues, benign prostate hyperplasia tissues and prostate cancer cell lines. And then collected the clinical data of prostate cancer patients, such as prostate specific antigen (PSA), Gleason score, clinical stage and age of the patients. To investigate whether the degree of methylation of gene PCDH10 is correlated with the above clinical data. Thus, the theoretical basis and experimental basis are provided for the study of the pathogenesis of prostate cancer and the finding of an early and effective biomarker for prostate cancer. Methods 1. The postoperative specimens were collected from patients hospitalized in urology department of the first affiliated Hospital of Liaoning Medical College and the first Hospital of Peking University from September 2012 to May 2013 with laparoscopic radical prostatectomy or transurethral resection of prostate. Number and store in-80 鈩
本文編號:2407404
[Abstract]:Objective to evaluate the lack of specificity in early diagnosis of prostate cancer. We measured the methylation of gene PCDH10 in prostate cancer tissues, benign prostate hyperplasia tissues and prostate cancer cell lines. And then collected the clinical data of prostate cancer patients, such as prostate specific antigen (PSA), Gleason score, clinical stage and age of the patients. To investigate whether the degree of methylation of gene PCDH10 is correlated with the above clinical data. Thus, the theoretical basis and experimental basis are provided for the study of the pathogenesis of prostate cancer and the finding of an early and effective biomarker for prostate cancer. Methods 1. The postoperative specimens were collected from patients hospitalized in urology department of the first affiliated Hospital of Liaoning Medical College and the first Hospital of Peking University from September 2012 to May 2013 with laparoscopic radical prostatectomy or transurethral resection of prostate. Number and store in-80 鈩
本文編號:2407404
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