Quantitative real-time PCR(qRT-PCR)has been widely used for gene expression analysis,and selection of reference genes is a key point to obtain accurate results.To find out optimal reference genes for qRT-PCR in Manila...Quantitative real-time PCR(qRT-PCR)has been widely used for gene expression analysis,and selection of reference genes is a key point to obtain accurate results.To find out optimal reference genes for qRT-PCR in Manila clam Ruditapes philippinarum in response to hypoxia,different tissues were used and compared to evaluate the stability of candidate reference genes under low oxygen stress(DO 0.5mgL^(−1) and DO 2.0mgL^(−1))and normal condition(DO 7.5mgL^(−1)).Seven candidate reference genes were selected to evaluate the stability of their expression levels.The reference genes were evaluated by Delta Ct,BestKeeper,NormFinder and geNorm,and then screened by RefFinder calculation.Under hypoxic stress of 0.5mgL^(−1),the most suitable reference gene for gill and hepatopancreas was RPL31,and the optimal reference genes for axe foot and adductor muscle were TUB and HIS,respectively.For hypoxic stress of 2.0mgL^(−1),the most stable reference gene for gill and hepatopancreas was RPL31,and the optimal reference genes for axe foot and adductor muscle were RPS23 and EF1A,respectively.At the normal condition,HIS and EF1A were identified as the optimal internal reference genes in gill and hepatopancreas respectively,and GFRP2 was the best internal reference gene for axe foot and adductor muscle.The present findings will provide important basis for the selection of reference genes for qRT-PCR analysis of gene expression level in bivalves under hypoxic stress,which might be helpful for the analysis of other molluscs too.展开更多
目的了解短链酰基辅酶A脱氢酶缺乏症(short-chain acyl-coenzyme A dehydrogenase deficiency,SCADD)在河北省石家庄市新生儿中的患病率和临床特征,以及酰基辅酶A脱氢酶(acylcoenzyme A dehydrogenase,ACADS)基因突变情况。方法2014年1...目的了解短链酰基辅酶A脱氢酶缺乏症(short-chain acyl-coenzyme A dehydrogenase deficiency,SCADD)在河北省石家庄市新生儿中的患病率和临床特征,以及酰基辅酶A脱氢酶(acylcoenzyme A dehydrogenase,ACADS)基因突变情况。方法2014年1月至2021年12月,河北省石家庄市共分娩185683例活产新生儿,行串联质谱筛查,检测丁酰基肉碱(butylcarnitine,C4)、C4/乙酰基肉碱(acetylcarnitine,C2)、C4/丙酰基肉碱(propionylcarnitine,C3)。筛查阳性患儿进一步行基因检测,Sanger测序进行验证。185683例活产新生儿中,纳入118502例出生胎龄信息准确完整的新生儿,分为早产儿组(5597例)、足月儿组(112369例)、过期产儿组(536例),比较3组间C4、C4/C2及C4/C3水平。统计学方法采用单因素方差分析、t检验和Pearson相关性分析。结果185683例新生儿中,确诊4例SCADD患儿,患病率为1/46421。基因检测到ACADS基因2例复合杂合突变、1例纯合突变及1例杂合突变;发现了4种突变位点,分别为:c.625 G>A、c.1031A>G、c.1157 G>A和c.1130 C>T,均为已知突变。4例患儿初筛C4水平为0.65~0.84μmol/L。随访4例确诊患儿的生长发育情况,未出现临床表现。早产儿、足月儿、过期产儿组的C4分别为(0.192±0.073)、(0.168±0.058)、(0.158±0.052)μmol/L(F=447.700,P<0.001);C4/C2分别为0.0115±0.0047、0.0106±0.0040、0.0104±0.0038(F=110.200,P<0.001);C4/C3分别为0.1175±0.0714、0.1161±0.0563、0.1180±0.0593(F=2.481,P=0.084)。早产儿C4、C4/C2水平均高于足月儿(P值均<0.001);过期产儿C4水平低于足月儿(P<0.001)。出生胎龄与C4水平、C4/C2值均呈负相关(r值分别为-0.119与-0.036,P值均<0.001)。结论串联质谱联合基因测序技术可及早确诊SCADD患儿。河北省石家庄市新生儿的SCADD患病率为1/46421;检测到4种ACADS基因已知突变位点。展开更多
基金supported by research grants from the Science and Technology Innovation Program of the Laoshan Laboratory(No.LSKJ202203803)the National Natural Science Foundation of China(No.32273107)+2 种基金supported by the Central Public-Interest Scientific Institution Basal Research Fund,Yellow Sea Fisheries Research Institute,CAFS(No.20603022022001)the project of Putian Science and Technology Department(No.2021NJJ002)the Shinan District Science and Technology Plan Project(No.2022-2-026-ZH).
文摘Quantitative real-time PCR(qRT-PCR)has been widely used for gene expression analysis,and selection of reference genes is a key point to obtain accurate results.To find out optimal reference genes for qRT-PCR in Manila clam Ruditapes philippinarum in response to hypoxia,different tissues were used and compared to evaluate the stability of candidate reference genes under low oxygen stress(DO 0.5mgL^(−1) and DO 2.0mgL^(−1))and normal condition(DO 7.5mgL^(−1)).Seven candidate reference genes were selected to evaluate the stability of their expression levels.The reference genes were evaluated by Delta Ct,BestKeeper,NormFinder and geNorm,and then screened by RefFinder calculation.Under hypoxic stress of 0.5mgL^(−1),the most suitable reference gene for gill and hepatopancreas was RPL31,and the optimal reference genes for axe foot and adductor muscle were TUB and HIS,respectively.For hypoxic stress of 2.0mgL^(−1),the most stable reference gene for gill and hepatopancreas was RPL31,and the optimal reference genes for axe foot and adductor muscle were RPS23 and EF1A,respectively.At the normal condition,HIS and EF1A were identified as the optimal internal reference genes in gill and hepatopancreas respectively,and GFRP2 was the best internal reference gene for axe foot and adductor muscle.The present findings will provide important basis for the selection of reference genes for qRT-PCR analysis of gene expression level in bivalves under hypoxic stress,which might be helpful for the analysis of other molluscs too.
文摘目的了解短链酰基辅酶A脱氢酶缺乏症(short-chain acyl-coenzyme A dehydrogenase deficiency,SCADD)在河北省石家庄市新生儿中的患病率和临床特征,以及酰基辅酶A脱氢酶(acylcoenzyme A dehydrogenase,ACADS)基因突变情况。方法2014年1月至2021年12月,河北省石家庄市共分娩185683例活产新生儿,行串联质谱筛查,检测丁酰基肉碱(butylcarnitine,C4)、C4/乙酰基肉碱(acetylcarnitine,C2)、C4/丙酰基肉碱(propionylcarnitine,C3)。筛查阳性患儿进一步行基因检测,Sanger测序进行验证。185683例活产新生儿中,纳入118502例出生胎龄信息准确完整的新生儿,分为早产儿组(5597例)、足月儿组(112369例)、过期产儿组(536例),比较3组间C4、C4/C2及C4/C3水平。统计学方法采用单因素方差分析、t检验和Pearson相关性分析。结果185683例新生儿中,确诊4例SCADD患儿,患病率为1/46421。基因检测到ACADS基因2例复合杂合突变、1例纯合突变及1例杂合突变;发现了4种突变位点,分别为:c.625 G>A、c.1031A>G、c.1157 G>A和c.1130 C>T,均为已知突变。4例患儿初筛C4水平为0.65~0.84μmol/L。随访4例确诊患儿的生长发育情况,未出现临床表现。早产儿、足月儿、过期产儿组的C4分别为(0.192±0.073)、(0.168±0.058)、(0.158±0.052)μmol/L(F=447.700,P<0.001);C4/C2分别为0.0115±0.0047、0.0106±0.0040、0.0104±0.0038(F=110.200,P<0.001);C4/C3分别为0.1175±0.0714、0.1161±0.0563、0.1180±0.0593(F=2.481,P=0.084)。早产儿C4、C4/C2水平均高于足月儿(P值均<0.001);过期产儿C4水平低于足月儿(P<0.001)。出生胎龄与C4水平、C4/C2值均呈负相关(r值分别为-0.119与-0.036,P值均<0.001)。结论串联质谱联合基因测序技术可及早确诊SCADD患儿。河北省石家庄市新生儿的SCADD患病率为1/46421;检测到4种ACADS基因已知突变位点。
