目的:探究miR-335-5p/ADCY3失衡对获得性再生障碍性贫血(AA)患者淋巴细胞功能的影响。方法:采集AA患者外周血标本50例,其中重型再生障碍性贫血(SAA)38例,非重型再生障碍性贫血(NSAA)12例,同时采集健康志愿者(HC)外周血标本22例。标本分...目的:探究miR-335-5p/ADCY3失衡对获得性再生障碍性贫血(AA)患者淋巴细胞功能的影响。方法:采集AA患者外周血标本50例,其中重型再生障碍性贫血(SAA)38例,非重型再生障碍性贫血(NSAA)12例,同时采集健康志愿者(HC)外周血标本22例。标本分离单个核细胞(PBMNC)后,用RT-PCR检测miR-335-5p及ADCY3 mRNA的表达量。用RNAimax转染试剂,将阴性对照miR-335-5p及miR-335-5p mimic分别转染至AA患者的PBMNC,流式细胞术检测CD4^+T和CD8^+T细胞增殖、活化及分泌细胞因子的能力。应用双荧光素酶报告基因系统验证miR-335-5p与靶基因的靶向关系。结果:同HC来源的PBMNC(HC-PBMNC)相比,SAA和NSAA来源的PBMNC中miR-335-5p的表达量均明显降低(0.08±0.01 vs 0.74±0.10,P<0.01^**;0.17±0.02 vs 0.74±0.10,P<0.01^**)。而且,SAA来源的PBMNC中miR-335-5p的表达量显著低于NSAA(P<0.01^**)。与对照组相比,体外上调miR-335-5p的表达,AA来源的PBMNC(AA-PBMNC)中,CD4+T和CD8+T细胞增殖能力均明显降低(P<0.05^*和P<0.05^*)。而且上调miR-335-5p的表达可显著抑制AA-PBMNC中CD4^+和CD8^+T细胞的活化(P<0.01^**和P<0.01^**)。此外,上调AA-PBMNC中,miR-335-5p的表达还可明显降低CD4^+TNFα^+T细胞、CD8^+IFNγ^+T细胞和CD8^+TNFα^+T细胞的比例(P<0.01、P<0.05和P<0.05)。靶基因筛查显示,ADCY3在AA-PBMNC中的表达量明显高于HC-PBMNC(1.70±0.15 vs 0.76±0.12,P<0.001)。而且,miR-335-5p可显著抑制ADCY33′UTR野生型质粒的荧光素酶活性(P<0.05)。结论:MiR-335-5p在AA-PBMNC中显著低表达,且与疾病严重程度相关。体外上调AA-PBMNC中miR-335-5p的表达量可纠正患者免疫异常状态。这些改变可能与靶基因ADCY3的抑制增强有关。展开更多
To explore the pharmacogenomic markers that affect the platinum-based chemotherapy response in non-small-cell lung carcinoma(NSCLC),we performed a two-cohort of genome-wide association studies(GWAS),including 34 for W...To explore the pharmacogenomic markers that affect the platinum-based chemotherapy response in non-small-cell lung carcinoma(NSCLC),we performed a two-cohort of genome-wide association studies(GWAS),including 34 for WES-based and 433 for microarray-based analyses,as well as two independent validation cohorts.After integrating the results of two studies,the genetic variations related to the platinum-based chemotherapy response were further determined by fine-mapping in 838 samples,and their potential functional impact were investigated by eQTL analysis and in vitro cell experiments.We found that a total of 68 variations were significant at P<1×10^(-3)in cohort 1 discovery stage,of which 3 SNPs were verified in 262 independent samples.A total of541 SNPs were significant at P<1×10^(-4)in cohort 2 discovery stage,of which 8 SNPs were verified in 347 independent samples.Comparing the validated SNPs in two GWAS,ADCY1 gene was verified in both independent studies.The results of fine-mapping showed that the G allele carriers of ADCY1rs2280496 and C allele carriers of rs189178649 were more likely to be resistant to platinum-based chemotherapy.In conclusion,our study found that rs2280496 and rs189178649 in ADCY1 gene were associated the sensitivity of platinum-based chemotherapy in NSCLC patients.展开更多
Background: The in vivo concentration of bicarbonate(HCO3-), one of the essential sperm capacitating effectors,varies greatly in the different environments sperm go through from cauda epididymis to the fertilisation s...Background: The in vivo concentration of bicarbonate(HCO3-), one of the essential sperm capacitating effectors,varies greatly in the different environments sperm go through from cauda epididymis to the fertilisation site. On the contrary, porcine in vitro sperm capacitation and fertilisation media usually contains a standard concentration of25 mmol/L, and one of the main problems presented is the unacceptable high incidence of polyspermy. This work hypothesised that by modifying the HCO3-concentration of the medium, the output of in vitro sperm capacitation and fertilisation could be increased.Results: Once exposed to the capacitation medium, the intracellular pH(pHi) of spermatozoa increased immediately even at low concentrations of HCO3-, but only extracellular concentrations of and above 15 mmol/L increased the substrates protein kinase A phosphorylation(pPKAs). Although with a significant delay, 15 mmol/L of HCO3-stimulated sperm linear motility and increased other late events in capacitation such as tyrosine phosphorylation(Tyr-P) to levels similar to those obtained with 25 mmol/L. This information allowed the establishment of a new in vitro fertilisation(IVF)system based on the optimization of HCO3-concentration to 15 mmol/L, which led to a 25.3% increment of the viable zygotes(8.6% in the standard system vs. 33.9%).Conclusions: Optimising HCO3-concentrations allows for establishing an IVF method that significantly reduced porcine polyspermy and increased the production of viable zygotes. A concentration of 15 mmol/L of HCO3-in the medium is sufficient to trigger the in vitro sperm capacitation and increase the fertilisation efficiency in porcine.展开更多
文摘目的:探究miR-335-5p/ADCY3失衡对获得性再生障碍性贫血(AA)患者淋巴细胞功能的影响。方法:采集AA患者外周血标本50例,其中重型再生障碍性贫血(SAA)38例,非重型再生障碍性贫血(NSAA)12例,同时采集健康志愿者(HC)外周血标本22例。标本分离单个核细胞(PBMNC)后,用RT-PCR检测miR-335-5p及ADCY3 mRNA的表达量。用RNAimax转染试剂,将阴性对照miR-335-5p及miR-335-5p mimic分别转染至AA患者的PBMNC,流式细胞术检测CD4^+T和CD8^+T细胞增殖、活化及分泌细胞因子的能力。应用双荧光素酶报告基因系统验证miR-335-5p与靶基因的靶向关系。结果:同HC来源的PBMNC(HC-PBMNC)相比,SAA和NSAA来源的PBMNC中miR-335-5p的表达量均明显降低(0.08±0.01 vs 0.74±0.10,P<0.01^**;0.17±0.02 vs 0.74±0.10,P<0.01^**)。而且,SAA来源的PBMNC中miR-335-5p的表达量显著低于NSAA(P<0.01^**)。与对照组相比,体外上调miR-335-5p的表达,AA来源的PBMNC(AA-PBMNC)中,CD4+T和CD8+T细胞增殖能力均明显降低(P<0.05^*和P<0.05^*)。而且上调miR-335-5p的表达可显著抑制AA-PBMNC中CD4^+和CD8^+T细胞的活化(P<0.01^**和P<0.01^**)。此外,上调AA-PBMNC中,miR-335-5p的表达还可明显降低CD4^+TNFα^+T细胞、CD8^+IFNγ^+T细胞和CD8^+TNFα^+T细胞的比例(P<0.01、P<0.05和P<0.05)。靶基因筛查显示,ADCY3在AA-PBMNC中的表达量明显高于HC-PBMNC(1.70±0.15 vs 0.76±0.12,P<0.001)。而且,miR-335-5p可显著抑制ADCY33′UTR野生型质粒的荧光素酶活性(P<0.05)。结论:MiR-335-5p在AA-PBMNC中显著低表达,且与疾病严重程度相关。体外上调AA-PBMNC中miR-335-5p的表达量可纠正患者免疫异常状态。这些改变可能与靶基因ADCY3的抑制增强有关。
基金supported by the National Key Research and Development Programs(2016YFC1306900 and 2017ZX09304014,China)National Natural Science Foundation of China(81573508,81874327,81773823,81803640 and 82073943,China)+3 种基金Fundamental Research Funds for the Central Universities of Central South University(2018zzts251,China)The StrategyOriented Special Project of Central South University in China(ZLXD2017003)Youth Science Foundation of Xiangya Hospital,Central South University(2017Q02,China)Hunan Cancer Hospital Climb Plan(YF2020011,China)。
文摘To explore the pharmacogenomic markers that affect the platinum-based chemotherapy response in non-small-cell lung carcinoma(NSCLC),we performed a two-cohort of genome-wide association studies(GWAS),including 34 for WES-based and 433 for microarray-based analyses,as well as two independent validation cohorts.After integrating the results of two studies,the genetic variations related to the platinum-based chemotherapy response were further determined by fine-mapping in 838 samples,and their potential functional impact were investigated by eQTL analysis and in vitro cell experiments.We found that a total of 68 variations were significant at P<1×10^(-3)in cohort 1 discovery stage,of which 3 SNPs were verified in 262 independent samples.A total of541 SNPs were significant at P<1×10^(-4)in cohort 2 discovery stage,of which 8 SNPs were verified in 347 independent samples.Comparing the validated SNPs in two GWAS,ADCY1 gene was verified in both independent studies.The results of fine-mapping showed that the G allele carriers of ADCY1rs2280496 and C allele carriers of rs189178649 were more likely to be resistant to platinum-based chemotherapy.In conclusion,our study found that rs2280496 and rs189178649 in ADCY1 gene were associated the sensitivity of platinum-based chemotherapy in NSCLC patients.
基金supported by the Spanish Ministry of Economy and Competitiveness(MINECO)the European Regional Development Fund(FEDER),Grants AGL2012–40180-C03–01-02 and AGL2015–66341-R)+2 种基金Fundación Séneca(20040/GERM/16)by a grant R01-HD-038082(to P.E.V.)from the National Institutes of Health(NIH)USA
文摘Background: The in vivo concentration of bicarbonate(HCO3-), one of the essential sperm capacitating effectors,varies greatly in the different environments sperm go through from cauda epididymis to the fertilisation site. On the contrary, porcine in vitro sperm capacitation and fertilisation media usually contains a standard concentration of25 mmol/L, and one of the main problems presented is the unacceptable high incidence of polyspermy. This work hypothesised that by modifying the HCO3-concentration of the medium, the output of in vitro sperm capacitation and fertilisation could be increased.Results: Once exposed to the capacitation medium, the intracellular pH(pHi) of spermatozoa increased immediately even at low concentrations of HCO3-, but only extracellular concentrations of and above 15 mmol/L increased the substrates protein kinase A phosphorylation(pPKAs). Although with a significant delay, 15 mmol/L of HCO3-stimulated sperm linear motility and increased other late events in capacitation such as tyrosine phosphorylation(Tyr-P) to levels similar to those obtained with 25 mmol/L. This information allowed the establishment of a new in vitro fertilisation(IVF)system based on the optimization of HCO3-concentration to 15 mmol/L, which led to a 25.3% increment of the viable zygotes(8.6% in the standard system vs. 33.9%).Conclusions: Optimising HCO3-concentrations allows for establishing an IVF method that significantly reduced porcine polyspermy and increased the production of viable zygotes. A concentration of 15 mmol/L of HCO3-in the medium is sufficient to trigger the in vitro sperm capacitation and increase the fertilisation efficiency in porcine.
