目的探討p16基因純和缺失和突變與胃癌發生的關系。方法采用PCR、多重PCR、PCRSSCP和DNA測序技術分析50例胃癌組織中p16基因的表達情況,其中早期胃癌7例,進展期胃癌43例。結果p16基因總的點突變頻率為8.00%(4/50),早期胃癌為14.29%(1/7),進展期胃癌為6.98%(3/43),兩者比較差異無顯著性意義(P>0.05); p16基因突變與腫瘤的大小、位置、分化程度和有無淋巴結轉移無關(P>0.05)。 p16基因總的純和缺失頻率為16.00%(8/50),早期胃癌為0(0/7),進展期胃癌為18.60%(8/43),兩者比較差異有顯著性意義(P<0.05); p16 基因缺失頻率與腫瘤分化程度和有無淋巴結轉移有關(P<0.05)。結論p16基因點突變是胃癌發生的早期事件,對胃癌早期診斷有一定幫助; p16基因純和缺失是胃癌的晚期事件,可能與胃癌的轉移和復發有關。
引用本文:
孫海軍,吳波,李愛東,林樂岷,宋純,薛東波,許評,宋春芳. 不同時期胃癌中p16基因缺失和突變的研究. 中國普外基礎與臨床雜志, 2002, 9(6): 415-417. doi:
復制
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Gunther T,SchneiderStock R, Pross M, et al. Alterations of the p16/MTS1tumor suppressor gene in gastric cancer [J]. Pathol Res pract, 1998; 194(12)∶809.
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Sakata K,Tamura G,Maesawa C, et al. Loss of heterozygosity on the short arm of chromosome 9 without p16 gene mutation in gastric carcinomas [J]. Jpn J cancer Res,1995; 86(4)∶333.
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Lee YY, Kang SH, Seo JY,et al. Alterations of p16 INK4A and p15 INK4B genes in gastric carcinomas [J]. Cancer, 1997; 80(10)∶1889.
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劉君綜述,蒲永東,宋少柏審校. 胃癌中p16基因研究概況 [J]. 中國普外基礎與臨床雜志,1999; 6(3)∶190.
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劉君綜述,李寧,宋少柏審校. 胃癌的分子生物學研究進展 [J]. 中國普外基礎與臨床雜志,2000; 7(3)∶197.
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- 1. Parkin DM, Pisani P, Ferlay J. Estimates of the worldwide incidence of eighteen major cancers in 1985 [J]. Int J Cancer,1993; 54(4)∶594.
- 2. Wright PA,Williams GT. Molecular biology and gastric carcinoma [J]. Gut,1993; 34(2)∶145.
- 3. 劉君,李寧,蒲永東,等. 抑癌基因p16在人胃癌中的表達及其臨床意義 [J]. 中國普外基礎與臨床雜志,1998; 5(5)∶285.
- 4. Sambrook J, Fritsch EF, Maniatis T. Molecular cloning [M]. 2nd ed. New York: Cold Spring Harbor Laboratory Press,1989∶327-328.
- 5. Wu MS,Shun CT, Sheu JC, et al. Overexpression of mutation p53 and cerbB2 proteins and mutations of the p15 and p16 genes in human gastric carcinoma: with respect to histological subtypes and stages [J]. J Gastroenterol Hepatol,1998; 13(3)∶305.
- 6. Gunther T,SchneiderStock R, Pross M, et al. Alterations of the p16/MTS1tumor suppressor gene in gastric cancer [J]. Pathol Res pract, 1998; 194(12)∶809.
- 7. Sakata K,Tamura G,Maesawa C, et al. Loss of heterozygosity on the short arm of chromosome 9 without p16 gene mutation in gastric carcinomas [J]. Jpn J cancer Res,1995; 86(4)∶333.
- 8. Lee YY, Kang SH, Seo JY,et al. Alterations of p16 INK4A and p15 INK4B genes in gastric carcinomas [J]. Cancer, 1997; 80(10)∶1889.
- 9. 劉君綜述,蒲永東,宋少柏審校. 胃癌中p16基因研究概況 [J]. 中國普外基礎與臨床雜志,1999; 6(3)∶190.
- 10. 劉君綜述,李寧,宋少柏審校. 胃癌的分子生物學研究進展 [J]. 中國普外基礎與臨床雜志,2000; 7(3)∶197.