Objective： To explore the in vitro effects of curcumin on the proliferation and apoptosis of the human renal cell carcinoma cell line ACHN, and to investigate its mechanisms of action. Methods： The human renal cell ...Objective： To explore the in vitro effects of curcumin on the proliferation and apoptosis of the human renal cell carcinoma cell line ACHN, and to investigate its mechanisms of action. Methods： The human renal cell carcinoma cell line ACHN was treated with different concentrations of curcumin for 24 h. The MTT assay was used to evaluate the cytotoxic effects of curcumin and flow cytometry was utilized to observe and detect the apoptosis of ACHN cells induced by curcumin. The expression levels of Bcl-2, Bax and NF-κBP65 mRNA were evaluated by Reverse Transcription-Polymerase Chain Reaction （RT-PCR）, while the expression of Bcl- 2, Bax, NF-κBP65 and IκB proteins was evaluated by Western blot. Results： The concentrations of curcumin used significantly inhibited the proliferation of ACHN human renal cell carcinoma cells in vitro in a dose and time-dependent manner （Ftime=5.55, P 〈 0.05; Fdose=110.05, P 〈 0.05）. Obvious apoptosis of cells treated with different concentrations of curcumin could be observed by FCM. Compared with the control group, the apoptosis rates of curcumin-treated cells were markedly increased （F=96.35, P 〈 0.05）. Lower dose of curcumin significantly induced the apoptosis of ACHN cells. With intervention of different concentrations of curcumin （0, 10, 20 and 40 μmol/L） for 24 h, the expression levels of Bcl-2 and NF-κBP65 mRNA in ACHN cells were decreased while the expression level of Bax mRNA was increased （P 〈 0.05）, and Bcl-2, and NF-κBP65 protein decreased, while Bax and IκB protein increased compared with those in the untreated group. Conclusion： Curcumin inhibited proliferation and increased apoptosis of the human renal cell carcinoma cell line ACHN. These curcumin effects appear to involve up-regulating IκB, down-regulating NF-κB, and regulating the expression of the apoptosis genes Bcl-2/Bax.展开更多
目的:探讨血管内大B细胞淋巴瘤(intravascular large B-cell lymphoma,IVLBCL)及其碰撞瘤的临床病理特征、诊断及鉴别诊断。方法:收集徐州医科大学附属医院病理科(3例)、山东大学齐鲁医院病理科(1例)、西安交通大学第一附属医院病理科(1...目的:探讨血管内大B细胞淋巴瘤(intravascular large B-cell lymphoma,IVLBCL)及其碰撞瘤的临床病理特征、诊断及鉴别诊断。方法:收集徐州医科大学附属医院病理科(3例)、山东大学齐鲁医院病理科(1例)、西安交通大学第一附属医院病理科(1例)诊断的5例IVLBCL,其中2例为碰撞瘤,1例合并肝硬化,分析总结其形态及免疫表型特点,并复习相关文献。结果:5例患者年龄53~73岁(中位年龄65岁),男女比3∶2。肿瘤分别位于双下肢、右侧小脑半球、左肾、双侧鼻腔及肝脏,其中例2和例3分别因脑膜肿瘤、肾癌手术而偶然发现于脑膜瘤、透明细胞性肾细胞癌组织中,为碰撞瘤;例5发生于肝硬化基础上。形态上异型淋巴细胞均位于小血管和毛细血管腔内,细胞体积大、胞质少、核染色深,可见明显核仁及核分裂象。免疫组织化学瘤细胞均表达CD20、PAX5,2例CD5阳性;1例为生发中心B细胞(GCB)表型,4例为非GCB表型;C-MYC均阳性表达(阳性率10%~40%),4例PD-L1阳性(阳性率60%~90%);Ki-67阳性指数70%~90%;广谱细胞角蛋白(CKpan)、CD3、末端脱氧核苷酸转移酶(TDT)、CD34均阴性。例2脑膜瘤细胞孕激素受体(PR)、上皮细胞膜抗原(EMA)、波形蛋白阳性,CKpan、PD-L1阴性;例3肾透明细胞癌细胞CKpan、PAX8、EMA、波形蛋白、碳酸酐酶Ⅸ(CAⅨ)、CD10均阳性,PD-L1阴性。5例原位杂交检测EB病毒编码的RNA均阴性,荧光原位杂交检测C-MYC基因均未见断裂。3例患者随访1~13个月,均死亡。结论:IVLBCL临床表现非特异,侵袭性高、预后差,该肿瘤的碰撞瘤极其罕见,病理医师应提高对其认识,行充分的鉴别诊断避免误诊及漏诊。展开更多
Background:We previously showed that the expression of follistatin-like protein 1(FSTL1)was significantly down-regulated in metastatic clear-cell renal cell carcinoma(ccRCC).In this study,we aimed to characterize the ...Background:We previously showed that the expression of follistatin-like protein 1(FSTL1)was significantly down-regulated in metastatic clear-cell renal cell carcinoma(ccRCC).In this study,we aimed to characterize the role of FSTL1 in the development of ccRCC.Methods:The effects of FSTL1 on cell activity and cell cycle were investigated in ccRCC cell lines with altered FSTL1 expression.Gene expression microarray assays were performed to identify the major signaling pathways affected by FSTL1 knockdown.The expression of FSTL1 in ccRCC and its effect on postoperative prognosis were estimated in a cohort with 89 patients.Results:FSTL1 knockdown promoted anchorage-independent growth,migration,invasion,and cell cycle of ccRCC cell lines,whereas FSTL1 overexpression attenuated cell migration.FSTL1 knockdown up-regulated nuclear factor-κB(NF-κB)and hypoxia-inducible factor(HIF)signaling pathways,increased epithelial-to-mesenchymal transition,up-regulated interleukin-6 expression,and promoted tumor necrosis factor-α-induced degradation of NF-κB inhibitor(IκBα)in ccRCC cell lines.FSTL1 immunostaining was selectively positive in epithelial cytoplasm in the loop of Henle,and positive rate of FSTL1 was significantly lower in ccRCC tissues than in adjacent renal tissues(P<0.001).The mul-tivariate Cox regression analysis showed that the intratumoral FSTL1 expression conferred a favorable independent prognosis with a hazard ratio of 0.325(95%confidence interval 0.118-0.894).HIF-2αexpression was negatively cor-related with FSTL1 expression in ccRCC specimens(r=−0.229,P=0.044).Intratumoral expression of HIF-2α,rather than HIF-1α,significantly predicted an unfavorable prognosis in ccRCC(log-rank,P=0.038).Conclusions:FSTL1 plays a tumor suppression role possibly via repressing the NF-κB and HIF-2αsignaling pathways.To increase FSTL1 expression might be a candidate therapeutic strategy for metastatic ccRCC.展开更多
基金supported by State Administration of Traditional Chinese Medicine of Shanxi Province (2005027)
文摘Objective： To explore the in vitro effects of curcumin on the proliferation and apoptosis of the human renal cell carcinoma cell line ACHN, and to investigate its mechanisms of action. Methods： The human renal cell carcinoma cell line ACHN was treated with different concentrations of curcumin for 24 h. The MTT assay was used to evaluate the cytotoxic effects of curcumin and flow cytometry was utilized to observe and detect the apoptosis of ACHN cells induced by curcumin. The expression levels of Bcl-2, Bax and NF-κBP65 mRNA were evaluated by Reverse Transcription-Polymerase Chain Reaction （RT-PCR）, while the expression of Bcl- 2, Bax, NF-κBP65 and IκB proteins was evaluated by Western blot. Results： The concentrations of curcumin used significantly inhibited the proliferation of ACHN human renal cell carcinoma cells in vitro in a dose and time-dependent manner （Ftime=5.55, P 〈 0.05; Fdose=110.05, P 〈 0.05）. Obvious apoptosis of cells treated with different concentrations of curcumin could be observed by FCM. Compared with the control group, the apoptosis rates of curcumin-treated cells were markedly increased （F=96.35, P 〈 0.05）. Lower dose of curcumin significantly induced the apoptosis of ACHN cells. With intervention of different concentrations of curcumin （0, 10, 20 and 40 μmol/L） for 24 h, the expression levels of Bcl-2 and NF-κBP65 mRNA in ACHN cells were decreased while the expression level of Bax mRNA was increased （P 〈 0.05）, and Bcl-2, and NF-κBP65 protein decreased, while Bax and IκB protein increased compared with those in the untreated group. Conclusion： Curcumin inhibited proliferation and increased apoptosis of the human renal cell carcinoma cell line ACHN. These curcumin effects appear to involve up-regulating IκB, down-regulating NF-κB, and regulating the expression of the apoptosis genes Bcl-2/Bax.
文摘目的:探讨血管内大B细胞淋巴瘤(intravascular large B-cell lymphoma,IVLBCL)及其碰撞瘤的临床病理特征、诊断及鉴别诊断。方法:收集徐州医科大学附属医院病理科(3例)、山东大学齐鲁医院病理科(1例)、西安交通大学第一附属医院病理科(1例)诊断的5例IVLBCL,其中2例为碰撞瘤,1例合并肝硬化,分析总结其形态及免疫表型特点,并复习相关文献。结果:5例患者年龄53~73岁(中位年龄65岁),男女比3∶2。肿瘤分别位于双下肢、右侧小脑半球、左肾、双侧鼻腔及肝脏,其中例2和例3分别因脑膜肿瘤、肾癌手术而偶然发现于脑膜瘤、透明细胞性肾细胞癌组织中,为碰撞瘤;例5发生于肝硬化基础上。形态上异型淋巴细胞均位于小血管和毛细血管腔内,细胞体积大、胞质少、核染色深,可见明显核仁及核分裂象。免疫组织化学瘤细胞均表达CD20、PAX5,2例CD5阳性;1例为生发中心B细胞(GCB)表型,4例为非GCB表型;C-MYC均阳性表达(阳性率10%~40%),4例PD-L1阳性(阳性率60%~90%);Ki-67阳性指数70%~90%;广谱细胞角蛋白(CKpan)、CD3、末端脱氧核苷酸转移酶(TDT)、CD34均阴性。例2脑膜瘤细胞孕激素受体(PR)、上皮细胞膜抗原(EMA)、波形蛋白阳性,CKpan、PD-L1阴性;例3肾透明细胞癌细胞CKpan、PAX8、EMA、波形蛋白、碳酸酐酶Ⅸ(CAⅨ)、CD10均阳性,PD-L1阴性。5例原位杂交检测EB病毒编码的RNA均阴性,荧光原位杂交检测C-MYC基因均未见断裂。3例患者随访1~13个月,均死亡。结论:IVLBCL临床表现非特异,侵袭性高、预后差,该肿瘤的碰撞瘤极其罕见,病理医师应提高对其认识,行充分的鉴别诊断避免误诊及漏诊。
基金supported by the National Key Basic Research Program(973 program)(2015CB554000 to GC)the National Natural Science Foundation of China(81520108021 and 91529305 to G.C.,81672518 and 81101928 to X.T.)the Three-year Action Plan on Public Health,Phase IV,Shanghai,China(15GWZK0801 to GC).
文摘Background:We previously showed that the expression of follistatin-like protein 1(FSTL1)was significantly down-regulated in metastatic clear-cell renal cell carcinoma(ccRCC).In this study,we aimed to characterize the role of FSTL1 in the development of ccRCC.Methods:The effects of FSTL1 on cell activity and cell cycle were investigated in ccRCC cell lines with altered FSTL1 expression.Gene expression microarray assays were performed to identify the major signaling pathways affected by FSTL1 knockdown.The expression of FSTL1 in ccRCC and its effect on postoperative prognosis were estimated in a cohort with 89 patients.Results:FSTL1 knockdown promoted anchorage-independent growth,migration,invasion,and cell cycle of ccRCC cell lines,whereas FSTL1 overexpression attenuated cell migration.FSTL1 knockdown up-regulated nuclear factor-κB(NF-κB)and hypoxia-inducible factor(HIF)signaling pathways,increased epithelial-to-mesenchymal transition,up-regulated interleukin-6 expression,and promoted tumor necrosis factor-α-induced degradation of NF-κB inhibitor(IκBα)in ccRCC cell lines.FSTL1 immunostaining was selectively positive in epithelial cytoplasm in the loop of Henle,and positive rate of FSTL1 was significantly lower in ccRCC tissues than in adjacent renal tissues(P<0.001).The mul-tivariate Cox regression analysis showed that the intratumoral FSTL1 expression conferred a favorable independent prognosis with a hazard ratio of 0.325(95%confidence interval 0.118-0.894).HIF-2αexpression was negatively cor-related with FSTL1 expression in ccRCC specimens(r=−0.229,P=0.044).Intratumoral expression of HIF-2α,rather than HIF-1α,significantly predicted an unfavorable prognosis in ccRCC(log-rank,P=0.038).Conclusions:FSTL1 plays a tumor suppression role possibly via repressing the NF-κB and HIF-2αsignaling pathways.To increase FSTL1 expression might be a candidate therapeutic strategy for metastatic ccRCC.
