• 蘭州大學(xué)第一附屬醫(yī)院普外科(蘭州730000);

目的  研究胃正常組織、不典型增生組織和癌組織中Ki67和PTEN蛋白的表達(dá)情況,探討其與胃組織癌變的關(guān)系及作為早期癌變生物學(xué)標(biāo)志的可能性。
方法  應(yīng)用免疫組織化學(xué)SP法對(duì)22例胃正常組織、80例不典型增生組織及60例胃癌組織中Ki67和PTEN蛋白的表達(dá)情況進(jìn)行檢測(cè)。
結(jié)果  在胃正常組織、不典型增生組織及胃癌組織中PTEN蛋白的表達(dá)陽性率呈遞減趨勢(shì),Ki67蛋白則呈遞增趨勢(shì); 等級(jí)相關(guān)分析結(jié)果顯示PTEN和Ki67表達(dá)陽性率與胃黏膜組織從正常至不典型增生再至癌變這一過程均相關(guān)(r分別為-0.461和0.301,P<0.01)。PTEN的表達(dá)與胃癌的Lauren分型、分化程度、浸潤(rùn)深度無關(guān),與淋巴結(jié)轉(zhuǎn)移有關(guān)。Ki67的表達(dá)與胃癌的Lauren分型、淋巴結(jié)轉(zhuǎn)移有關(guān),與浸潤(rùn)深度、分化程度無關(guān)。PTEN和Ki67蛋白的表達(dá)在胃癌組織中呈負(fù)相關(guān)(r=-0.316,P<0.05)。
結(jié)論  Ki67和PTEN蛋白的表達(dá)異常與胃癌的癌變過程相關(guān),兩者有可能成為胃組織早期癌變的分子標(biāo)記物。

引用本文: 陳昊,李玉民,何明彥,李汛,周文策,孟文勃,張磊. 胃不典型增生和癌組織中Ki67和PTEN蛋白的表達(dá)及意義. 中國(guó)普外基礎(chǔ)與臨床雜志, 2007, 14(3): 304-307. doi: 復(fù)制

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10. Gottschalk AR, Basila D, Wong M, et al. p27Kip1 is required for PTEN-induced G1 growth arrest [J]. Cancer Res, 2001; 61(5)∶2105.
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  1. 1. Hlobilkova A, Guldberg P, Thullberg M, et al. Cell cycle arrest by the PTEN tumor suppressor is target cell specific and may require protein phosphatase activity [J]. Exp Cell Res, 2000; 256(2)∶571.
  2. 2. 江明, 王紅陽. PTEN/MMAC1/TEP1基因——一種新的腫瘤抑制基因和蛋白酪氨酸磷酸酶的研究進(jìn)展 [J]. 國(guó)外醫(yī)學(xué)·腫瘤學(xué)分冊(cè), 1998; 25(2)∶70.
  3. 3. Oki E, Kakeji Y, Tokunage E, et al. Impact of PTEN/AKT/PI3K signal pathway on the chemotherapy for gastric cancer [J]. Journal of Clinical Oncology, 2006; 24(18)∶187S.
  4. 4. Xu M, Jin YL, Fu J, et al. The abnormal expression of retinoic acid receptor-beta, p53 and Ki67 protein in normal, premalignant and malignant esophageal tissues [J]. World J Gastroenterol, 2002; 8(2)∶200.
  5. 5. 王舒寶, 王俊. 胃癌復(fù)發(fā)與轉(zhuǎn)移的有關(guān)問題及綜合治療 [J]. 中國(guó)普外基礎(chǔ)與臨床雜志, 2006; 13(1)∶9.
  6. 6. Ito K, Sasano H, Yabuki N, et al. Immunohistochemical study of Ki-67 and DNA topoisomerase Ⅱ in human endometrium [J]. Mod Pathol, 1997; 10(4)∶289.
  7. 7. Sulis ML, Parsons R. PTEN: from pathology to biology [J]. Trends Cell Biol, 2003; 13(9)∶478.
  8. 8. 陳道達(dá), 陳劍英. 早期胃癌診斷中的問題及可行對(duì)策 [J]. 中國(guó)普外基礎(chǔ)與臨床雜志, 2006; 13(1)∶7.
  9. 9. Tamura M, Gu J, Tran H, et al. PTEN gene and integrin signaling in cancer [J]. J Natl Cancer Inst, 1999; 91(21)∶1820.
  10. 10. Gottschalk AR, Basila D, Wong M, et al. p27Kip1 is required for PTEN-induced G1 growth arrest [J]. Cancer Res, 2001; 61(5)∶2105.
  11. 11. Deng H, Wu RL, Zhou HY, et al. Significance of Survivin and PTEN expression in full lymph node-examined gastric cancer [J]. World Journal of Gastroenterology, 2006; 12(7)∶1013.
  12. 12. Im SA, Lee KE, Nam E, et al. Potential prognostic significance of p185(HER2) overexpression with loss of PTEN expression in gastric carcinomas [J]. Tumori, 2005; 91(6)∶513.