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胰腺癌组织中PSAT1表达及其介导的细胞增殖侵袭作用机制研究 被引量:5
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作者 聂钊 李岚 +7 位作者 杨兰群 崔德军 钱利 叶丽敏 杨倩 张德林 褚明亮 曾宪春 《中国肿瘤临床》 CAS CSCD 北大核心 2018年第23期1187-1193,共7页
目的:探讨胰腺癌磷酸丝氨酸转氨酶1(phosphoserine aminotransferase 1,PSAT1)表达及其介导的增殖、侵袭作用机制。方法:采用免疫组织化学染色检测2013年7月至2017年7月98例胰腺癌组织和癌旁组织PSAT1表达,分析PSAT1表达与胰腺癌临床资... 目的:探讨胰腺癌磷酸丝氨酸转氨酶1(phosphoserine aminotransferase 1,PSAT1)表达及其介导的增殖、侵袭作用机制。方法:采用免疫组织化学染色检测2013年7月至2017年7月98例胰腺癌组织和癌旁组织PSAT1表达,分析PSAT1表达与胰腺癌临床资料、总体生存率、无病生存率的关系。分别向胰腺癌细胞BxPC-3、SW1990转染PSAT1-siRNA,研究敲低PSAT1表达对细胞增殖、迁移和侵袭的影响,Western blot检测敲低PSAT1对胰腺癌细胞PI3K/Akt/mTOR通路相关蛋白表达的影响。结果:PSAT1在胰腺癌组织中阳性表达率为69.4%(68/98),明显高于癌旁组织的阳性表达率5.0%(5/98),两者比较差异具有统计学意义(χ2=86.638,P<0.001)。PSAT1表达阳性率与淋巴结转移、TNM分期有关(P<0.05);PSAT1高表达的胰腺癌患者总生存期和无病生存期明显低于PSAT1低表达患者(P<0.05)。Cox多因素结果显示,PSAT1表达是影响胰腺癌总体生存率和无病生存率的危险因素(均P<0.05)。在胰腺癌BxPC-3和SW1990细胞中,与NC-siRNA组比较,PSAT1-siRNA组细胞增殖能力、迁移能力和细胞侵袭能力明显减弱,差异具有统计学意义(P<0.05)。同时PSAT1-siRNA组p-Akt、p-mTOR蛋白表达明显低于NC-siRNA组,差异具有统计学意义(P<0.05)。结论:PSAT1在胰腺癌组织和细胞中呈高表达,PSAT1可能通过调节PI3K/Akt/mTOR通路参与胰腺癌细胞的增殖和侵袭。 展开更多
关键词 胰腺癌 磷酸丝氨酸转氨酶1 糖酵解 增殖 侵袭 PI3K/Akt/mTOR信号通路
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A case of rapid growing colonic NK/T cell lymphoma complicated by Crohn's disease 被引量:2
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作者 Shumei Zheng Hui Xu +3 位作者 Qin Ouyang Linyun Xue Yong Zhang dejun cui 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2013年第1期119-123,共5页
A 37-year-old man developed abdominal pain and bloody diarrhea 11 months before admission. The colonoscopy revealed multifocal ulcers in the colon. Histology showed active chronic inflammation. Although anti-tuberculo... A 37-year-old man developed abdominal pain and bloody diarrhea 11 months before admission. The colonoscopy revealed multifocal ulcers in the colon. Histology showed active chronic inflammation. Although anti-tuberculosis medication was effective, his symptoms repeated 2 months later. The subsequent colonoscopy revealed more extensive irregular ulcers than before, and he was clinically suspected with intestinal malignant lymphoma. He underwent subtotal colectomy and was histologically suggested Crohn's disease, then 5-aminosalicylic and a combination of prednisone and azathioprine were administered in succession postoperatively, but they achieved minimal relief of symptoms for a period of 7 months. The third colonoscopy showed a large irregular ulcer in the ileocolon stomas, and primary colonic NK/T cell lymphoma was diagnosed through histological and immunophenotypic studies. Malignant lymphoma should be taken into consideration when clinically diagnosed Crohn's disease was refractory to medication or when its clinical course became aggressive. 展开更多
关键词 INK/T-cell lymphoma INTESTINES Crohn's disease herpesvirus 4 human
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