Eighty-four castrated boars including Laiwu Black （LW） （weight 30-90 kg, n = 6） and Lulai Black （LL） （weight 40-100 kg, n = 6） were used to study the developmental changes of collagen type Ⅲ alpha 1 （Col3al...Eighty-four castrated boars including Laiwu Black （LW） （weight 30-90 kg, n = 6） and Lulai Black （LL） （weight 40-100 kg, n = 6） were used to study the developmental changes of collagen type Ⅲ alpha 1 （Col3al） mRNA expression in the muscle and their association with intramuscular collagen （IMC）. The muscle total RNA was extracted to determine the abundance of Col3al mRNA using relative quantitative RT-PCR with β-actin mRNA as the internal standard. The results indicated that the developmental patterns of muscle Col3al mRNA in LW and LL pigs were similar. The abundance of Col3al mRNA increased with body weight, but decreased a little at 70 kg and 80 kg phases for LW and LL, respectively. On the whole, the expression level of Col3al mRNA in muscle of LW was higher than that of LL （P 〈 0.05）. Correlation analysis showed that the expression of Col3al mRNA in muscle was positively correlated with total and insoluble IMC, but was negatively correlated with IMC solubility for LW pigs （P 〈 0.01） and LL pigs （P 〈 0.05）, respectively. These results suggest that the muscle Col3al gene expression is affected by body weight and genotype and has important effect on IMC content and characteristics.展开更多
目的:本研究旨在观察转基因扩张型心肌病小鼠心肌组织Acta1、Col3a1基因及蛋白表达变化,探究真武汤防治扩张型心肌病的分子生物学机制。方法:将cT nT R141W基因转入C57BL/6J小鼠,建立了心肌组织特异表达cT nT R141W基因的转基因小鼠模型...目的:本研究旨在观察转基因扩张型心肌病小鼠心肌组织Acta1、Col3a1基因及蛋白表达变化,探究真武汤防治扩张型心肌病的分子生物学机制。方法:将cT nT R141W基因转入C57BL/6J小鼠,建立了心肌组织特异表达cT nT R141W基因的转基因小鼠模型,以C57BL/6J小鼠15只作为空白对照组,模型组小鼠60只,随机分为模型对照组、西药组、中药高剂量组及中药中剂量组,中药组以真武汤高中剂量对模型小鼠治疗4周,卡托普利为阳性对照药物。4周后采用qRT-PCR法检测各组心肌组织Acta1、Col3a1相对表达量; Western Blot法检测各组心肌组织Acta1、Col3a1蛋白表达。结果:与空白对照组比较模型对照组Acta1、Col3a1基因及蛋白表达显著升高(P <0. 01),与模型对照组比较西药组及中药高中剂量组Acta1、Col3a1基因及蛋白表达均显著下降(P <0. 01)。结论:DCM的发病机制与心肌组织中Acta1与Col3a1mRNA及蛋白表达升高有关,真武汤通过下调心肌组织中Acta1与Col3a1 mRNA及蛋白表达,抑制心肌细胞肥大及纤维化过程,起到防治DCM的作用。展开更多
目的分析一个Alport综合征家庭的临床特征及遗传学病因。方法选取2019年12月于南通大学附属医院耳鼻咽喉科门诊就诊的一个AS耳聋家庭(NT103),该家庭家系成员包括父母姐妹4例,其中姐姐为AS患者(Ⅱ-1),其余人临床表现均无异常。对Alport...目的分析一个Alport综合征家庭的临床特征及遗传学病因。方法选取2019年12月于南通大学附属医院耳鼻咽喉科门诊就诊的一个AS耳聋家庭(NT103),该家庭家系成员包括父母姐妹4例,其中姐姐为AS患者(Ⅱ-1),其余人临床表现均无异常。对Alport综合征家庭进行详尽临床资料的收集和评估;采用基于家庭为单位,结合定向捕获技术二代测序的策略分析测序结果;对可疑致病基因的变异位点进行家庭内Sanger测序验证,依据美国医学遗传学与基因组学学会(American College of Medical Genetics and Genomics,ACMG)指南确定变异致病性。结果该Alport综合征家庭的先证者表现为持续性血尿伴感音神经性聋但无眼部异常。定向捕获及Sanger测序显示,患者(Ⅱ-1)携带COL4A3复合杂合错义突变,c.4793T>G,p.L1598R/c.4981C>T,p.R1661C分别来自父母双亲,且在家系其他成员中共分离。根据ACMG指南,该Alport综合征家庭先证者携带的COL4A3基因复合杂合突变位点,判定为疑似致病变异。结论本研究丰富了COL4A3临床表型谱及基因突变谱。此外,对于疑似Alport综合征的患者,提倡常规开展基因检测以实现Alport综合征患者的早期个体化精准诊治。展开更多
Thoracic aortic dissection(TAD)without familial clustering or syndromic features is known as sporadic TAD(STAD).So far,the genetic basis of STAD remains unknown.Whole exome sequencing was performed in 223 STAD patient...Thoracic aortic dissection(TAD)without familial clustering or syndromic features is known as sporadic TAD(STAD).So far,the genetic basis of STAD remains unknown.Whole exome sequencing was performed in 223 STAD patients and 414 healthy controls from the Chinese Han population(N=637).After population structure and genetic relationship and ancestry analyses,we used the optimal sequence kernel association test to identify the candidate genes or variants of STAD.We found that COL3A1 was significantly relevant to STAD(P=7.35×10^(−6))after 10000 times permutation test(P=2.49×10^(−3)).Moreover,another independent cohort,including 423 cases and 734 non-STAD subjects(N=1157),replicated our results(P=0.021).Further bioinformatics analysis showed that COL3A1 was highly expressed in dissected aortic tissues,and its expression was related to the extracellular matrix(ECM)pathway.Our study identified a profile of known heritable TAD genes in the Chinese STAD population and found that COL3A1 could increase the risk of STAD through the ECM pathway.We wanted to expand the knowledge of the genetic basis and pathology of STAD,which may further help in providing better genetic counseling to the patients.展开更多
基金This work was supported by the National Animal Breed Resource Preserve Project (No.200014) the Key Project of Shandong Science and Technology Development (No. 20059913) the Sciences Innovation Foundation of Shandong Agricultural University.
文摘Eighty-four castrated boars including Laiwu Black （LW） （weight 30-90 kg, n = 6） and Lulai Black （LL） （weight 40-100 kg, n = 6） were used to study the developmental changes of collagen type Ⅲ alpha 1 （Col3al） mRNA expression in the muscle and their association with intramuscular collagen （IMC）. The muscle total RNA was extracted to determine the abundance of Col3al mRNA using relative quantitative RT-PCR with β-actin mRNA as the internal standard. The results indicated that the developmental patterns of muscle Col3al mRNA in LW and LL pigs were similar. The abundance of Col3al mRNA increased with body weight, but decreased a little at 70 kg and 80 kg phases for LW and LL, respectively. On the whole, the expression level of Col3al mRNA in muscle of LW was higher than that of LL （P 〈 0.05）. Correlation analysis showed that the expression of Col3al mRNA in muscle was positively correlated with total and insoluble IMC, but was negatively correlated with IMC solubility for LW pigs （P 〈 0.01） and LL pigs （P 〈 0.05）, respectively. These results suggest that the muscle Col3al gene expression is affected by body weight and genotype and has important effect on IMC content and characteristics.
文摘目的:本研究旨在观察转基因扩张型心肌病小鼠心肌组织Acta1、Col3a1基因及蛋白表达变化,探究真武汤防治扩张型心肌病的分子生物学机制。方法:将cT nT R141W基因转入C57BL/6J小鼠,建立了心肌组织特异表达cT nT R141W基因的转基因小鼠模型,以C57BL/6J小鼠15只作为空白对照组,模型组小鼠60只,随机分为模型对照组、西药组、中药高剂量组及中药中剂量组,中药组以真武汤高中剂量对模型小鼠治疗4周,卡托普利为阳性对照药物。4周后采用qRT-PCR法检测各组心肌组织Acta1、Col3a1相对表达量; Western Blot法检测各组心肌组织Acta1、Col3a1蛋白表达。结果:与空白对照组比较模型对照组Acta1、Col3a1基因及蛋白表达显著升高(P <0. 01),与模型对照组比较西药组及中药高中剂量组Acta1、Col3a1基因及蛋白表达均显著下降(P <0. 01)。结论:DCM的发病机制与心肌组织中Acta1与Col3a1mRNA及蛋白表达升高有关,真武汤通过下调心肌组织中Acta1与Col3a1 mRNA及蛋白表达,抑制心肌细胞肥大及纤维化过程,起到防治DCM的作用。
文摘目的分析一个Alport综合征家庭的临床特征及遗传学病因。方法选取2019年12月于南通大学附属医院耳鼻咽喉科门诊就诊的一个AS耳聋家庭(NT103),该家庭家系成员包括父母姐妹4例,其中姐姐为AS患者(Ⅱ-1),其余人临床表现均无异常。对Alport综合征家庭进行详尽临床资料的收集和评估;采用基于家庭为单位,结合定向捕获技术二代测序的策略分析测序结果;对可疑致病基因的变异位点进行家庭内Sanger测序验证,依据美国医学遗传学与基因组学学会(American College of Medical Genetics and Genomics,ACMG)指南确定变异致病性。结果该Alport综合征家庭的先证者表现为持续性血尿伴感音神经性聋但无眼部异常。定向捕获及Sanger测序显示,患者(Ⅱ-1)携带COL4A3复合杂合错义突变,c.4793T>G,p.L1598R/c.4981C>T,p.R1661C分别来自父母双亲,且在家系其他成员中共分离。根据ACMG指南,该Alport综合征家庭先证者携带的COL4A3基因复合杂合突变位点,判定为疑似致病变异。结论本研究丰富了COL4A3临床表型谱及基因突变谱。此外,对于疑似Alport综合征的患者,提倡常规开展基因检测以实现Alport综合征患者的早期个体化精准诊治。
基金This work was supported by the National Natural Science Foundation of China(Nos.91839302,91439203,and 81700413)the National Key R&D Program of China(No.2017YFC0909400)the Municipal Science and Technology Major Project(No.2017SHZDZX01).
文摘Thoracic aortic dissection(TAD)without familial clustering or syndromic features is known as sporadic TAD(STAD).So far,the genetic basis of STAD remains unknown.Whole exome sequencing was performed in 223 STAD patients and 414 healthy controls from the Chinese Han population(N=637).After population structure and genetic relationship and ancestry analyses,we used the optimal sequence kernel association test to identify the candidate genes or variants of STAD.We found that COL3A1 was significantly relevant to STAD(P=7.35×10^(−6))after 10000 times permutation test(P=2.49×10^(−3)).Moreover,another independent cohort,including 423 cases and 734 non-STAD subjects(N=1157),replicated our results(P=0.021).Further bioinformatics analysis showed that COL3A1 was highly expressed in dissected aortic tissues,and its expression was related to the extracellular matrix(ECM)pathway.Our study identified a profile of known heritable TAD genes in the Chinese STAD population and found that COL3A1 could increase the risk of STAD through the ECM pathway.We wanted to expand the knowledge of the genetic basis and pathology of STAD,which may further help in providing better genetic counseling to the patients.
