In order to investigate the correlation between the expression of the apoptotic regulatory proteins (Fas, Bcl 2) in peripheral blood lymphocytes (PBLC) and the level of IFN γ and IL 4 in serum of the patients with...In order to investigate the correlation between the expression of the apoptotic regulatory proteins (Fas, Bcl 2) in peripheral blood lymphocytes (PBLC) and the level of IFN γ and IL 4 in serum of the patients with condyloma acuminata (CA) in the immune pathogenesis of CA, indirect immunofluorescence labeling method of flow cytometer and solid sandwich ELISA method were performed for detecting the expression of Fas, Bcl 2 in PBLC and the level of IFN γ and IL 4 in serum of 60 cases of CA. The results showed the expression level of Fas in PBLC of CA was significantly higher than in the normal control group, but the expression level of Bcl 2 was significantly lower (both P< 0.01). The level of IFN γ in serum of CA was significantly lower than in the normal control group ( P< 0.01), but IL 4 was significantly lower (both P< 0.01). The expression of Fas in PBLC had a negative correlation with the level of IFN γ in serum of patients with CA, but had a positive correlation with the level of IL 4; The expression of Bcl 2 had a positive correlation with the level of IFN γ, but had a negative correlation with the level of IL 4. All the correlation coefficients had significant differerce by t test ( P< 0.01). It was suggested abnormal apoptosis in PBLC, the suppressed secretion of the THl associated cytokines (eg: IFN γ) and the increased secretion of the TH2 asssociated cytokines (eg: IL 4) existed in the patients with CA and might play an important role in the immune pathogenesis of CA.展开更多
目的明确长片段非编码RNA(lncRNA)X失活特异性转录本(XIST)对人鼻咽癌细胞顺铂(DDP)耐药性的影响及可能的机制。方法通过荧光定量PCR检测人鼻咽癌顺铂耐药HNE1细胞株(HNE1/DDP)中XIST的表达特征。采用MTT试验观察XIST上调和下调对HNE1/...目的明确长片段非编码RNA(lncRNA)X失活特异性转录本(XIST)对人鼻咽癌细胞顺铂(DDP)耐药性的影响及可能的机制。方法通过荧光定量PCR检测人鼻咽癌顺铂耐药HNE1细胞株(HNE1/DDP)中XIST的表达特征。采用MTT试验观察XIST上调和下调对HNE1/DDP细胞DDP耐药性的影响,并通过EdU试验和流式细胞技术观察其对HNE1/DDP细胞增殖和凋亡的影响。采用蛋白质印迹法检测XIST上调和下调对促凋亡因子程序性细胞死亡4(PDCD4)和Fas配体(Fas-L)蛋白表达的影响。结果 XIST在HNE1/DDP细胞的表达量显著高于HNE1细胞(0.57±0.06 vs 0.1±0.02,P<0.05)。下调XIST的表达显著降低HNE1/DDP细胞对DDP的耐药性(P<0.05),而上调XIST增加对DDP的耐药性(P<0.05)。下调XIST的表达显著降低HNE1/DDP细胞增殖(6.17±1.93 vs 16.59 4.86, P<0.05)并诱导细胞凋亡[(18.04±4.72)%vs(4.22±1.65)%, P<0.05],而上调XIST增加细胞增殖(25.40±7.21 vs 13.16±3.95, P<0.05)并抑制细胞凋亡[(2.82±0.88)%vs(6.46±1.75)%, P<0.05]。下调XIST的表达显著增加HNE1/DDP细胞中PDCD4(4.10±0.42 vs 1.0±0.12, P<0.05和Fas-L(3.07 0.29 vs 1.0±0.14, P<0.05)蛋白的表达,而上调XIST降低PDCD4(0.36±0.11 vs 1.0±0.18, P<0.05)和Fas-L(0.17±0.09 vs 1.0±0.21, P<0.05)蛋白的表达。结论 XIST在HNE1/DDP细胞中表达升高,下调和上调XIST的表达可分别降低和增加HNE1/DDP细胞对DDP的耐药性,其机制可能与PDCD4和Fas-L蛋白表达改变相关。展开更多
文摘In order to investigate the correlation between the expression of the apoptotic regulatory proteins (Fas, Bcl 2) in peripheral blood lymphocytes (PBLC) and the level of IFN γ and IL 4 in serum of the patients with condyloma acuminata (CA) in the immune pathogenesis of CA, indirect immunofluorescence labeling method of flow cytometer and solid sandwich ELISA method were performed for detecting the expression of Fas, Bcl 2 in PBLC and the level of IFN γ and IL 4 in serum of 60 cases of CA. The results showed the expression level of Fas in PBLC of CA was significantly higher than in the normal control group, but the expression level of Bcl 2 was significantly lower (both P< 0.01). The level of IFN γ in serum of CA was significantly lower than in the normal control group ( P< 0.01), but IL 4 was significantly lower (both P< 0.01). The expression of Fas in PBLC had a negative correlation with the level of IFN γ in serum of patients with CA, but had a positive correlation with the level of IL 4; The expression of Bcl 2 had a positive correlation with the level of IFN γ, but had a negative correlation with the level of IL 4. All the correlation coefficients had significant differerce by t test ( P< 0.01). It was suggested abnormal apoptosis in PBLC, the suppressed secretion of the THl associated cytokines (eg: IFN γ) and the increased secretion of the TH2 asssociated cytokines (eg: IL 4) existed in the patients with CA and might play an important role in the immune pathogenesis of CA.
文摘目的明确长片段非编码RNA(lncRNA)X失活特异性转录本(XIST)对人鼻咽癌细胞顺铂(DDP)耐药性的影响及可能的机制。方法通过荧光定量PCR检测人鼻咽癌顺铂耐药HNE1细胞株(HNE1/DDP)中XIST的表达特征。采用MTT试验观察XIST上调和下调对HNE1/DDP细胞DDP耐药性的影响,并通过EdU试验和流式细胞技术观察其对HNE1/DDP细胞增殖和凋亡的影响。采用蛋白质印迹法检测XIST上调和下调对促凋亡因子程序性细胞死亡4(PDCD4)和Fas配体(Fas-L)蛋白表达的影响。结果 XIST在HNE1/DDP细胞的表达量显著高于HNE1细胞(0.57±0.06 vs 0.1±0.02,P<0.05)。下调XIST的表达显著降低HNE1/DDP细胞对DDP的耐药性(P<0.05),而上调XIST增加对DDP的耐药性(P<0.05)。下调XIST的表达显著降低HNE1/DDP细胞增殖(6.17±1.93 vs 16.59 4.86, P<0.05)并诱导细胞凋亡[(18.04±4.72)%vs(4.22±1.65)%, P<0.05],而上调XIST增加细胞增殖(25.40±7.21 vs 13.16±3.95, P<0.05)并抑制细胞凋亡[(2.82±0.88)%vs(6.46±1.75)%, P<0.05]。下调XIST的表达显著增加HNE1/DDP细胞中PDCD4(4.10±0.42 vs 1.0±0.12, P<0.05和Fas-L(3.07 0.29 vs 1.0±0.14, P<0.05)蛋白的表达,而上调XIST降低PDCD4(0.36±0.11 vs 1.0±0.18, P<0.05)和Fas-L(0.17±0.09 vs 1.0±0.21, P<0.05)蛋白的表达。结论 XIST在HNE1/DDP细胞中表达升高,下调和上调XIST的表达可分别降低和增加HNE1/DDP细胞对DDP的耐药性,其机制可能与PDCD4和Fas-L蛋白表达改变相关。