浙江大学生命科学学院生物物理研究所华跃进教授团队证实了耐辐射奇球菌RecJ(Deinococcus radiodurans RecJ,drRecJ)蛋白参与碱基切除修复途径的分子机制。相关研究成果论文“Participation of RecJ in the base excision repair pathwa...浙江大学生命科学学院生物物理研究所华跃进教授团队证实了耐辐射奇球菌RecJ(Deinococcus radiodurans RecJ,drRecJ)蛋白参与碱基切除修复途径的分子机制。相关研究成果论文“Participation of RecJ in the base excision repair pathway of Deinococcus radiodurans”(https://doi.org/10.1093/nar/gkaa714)发表在国际知名期刊《核酸研究》(Nucleic Acids Research)上。该研究围绕drRecJ蛋白如何参与碱基切除修复途径的问题展开,发现了5′—3′单链DNA核酸外切酶RecJ,同时,它也是一种非典型的无碱基位点裂解酶。展开更多
The major role of DNA polymerase β was thought to be limited in its involvement in short patch base excision repair by removing 5’-deoxyribose phosphate and base insertion. However, the recent researches indicate th...The major role of DNA polymerase β was thought to be limited in its involvement in short patch base excision repair by removing 5’-deoxyribose phosphate and base insertion. However, the recent researches indicate that polymerase β might take part in a wide spectrum of DNA metabolism reactions, including long patch base excision repair, DNA replication, recombination, meiosis and transleisional DNA synthesis. Because of its wide and important cellular function, an inappropriate intracellular polymerase β level might be associated with genomic instability. Down-regulation or mutation of polymerase β is mutagenic due to deficient in DNA repair, while overexpression of this error-prone β polymerase might perturb the normal function of other accurate polymerases and cause genomic instability as well.展开更多
无嘌呤/无嘧啶核酸内切酶/氧化还原因子1(apurinic/apyrim id inic endonuclease/redox-factor1,Ape/Ref-1)是一种在体内分布非常广泛的蛋白质,具有修复损伤的DNA,调节氧化还原反应,参与细胞信号转导等多种功能,在维持基因组的完整、调...无嘌呤/无嘧啶核酸内切酶/氧化还原因子1(apurinic/apyrim id inic endonuclease/redox-factor1,Ape/Ref-1)是一种在体内分布非常广泛的蛋白质,具有修复损伤的DNA,调节氧化还原反应,参与细胞信号转导等多种功能,在维持基因组的完整、调节基因表达、细胞保护等许多方面发挥重要作用。本文着重论述Ape/Ref-1的结构和生物学功能,及其在中枢神经系统肿瘤、损伤等疾病中的作用。展开更多
2023年4月24日,上海交通大学医学院附属上海儿童医学中心周斌兵课题组在Leukemia期刊上发表了最新研究成果Targeting DNA polymeraseβelicits synthetic lethality with mismatch repair deficiency in acute lymphoblastic leukemia(...2023年4月24日,上海交通大学医学院附属上海儿童医学中心周斌兵课题组在Leukemia期刊上发表了最新研究成果Targeting DNA polymeraseβelicits synthetic lethality with mismatch repair deficiency in acute lymphoblastic leukemia(靶向DNA聚合酶β在错配修复缺陷型急性淋巴细胞白血病中引起合成致死效应)。该研究聚焦DNA重要修复通路之碱基切除修复(base excision repair,BER),探究其在急性淋巴细胞白血病(acute lymphoblastic leukemia,ALL)细胞耐药存活中的作用,揭示了其在巯嘌呤引起的基因组损伤修复中所发挥的重要作用,并提出了POLB抑制剂联合巯嘌呤用于ALL治疗的潜在策略。该研究为进一步优化儿童ALL巯嘌呤临床精准用药方案奠定了理论基础。展开更多
文摘浙江大学生命科学学院生物物理研究所华跃进教授团队证实了耐辐射奇球菌RecJ(Deinococcus radiodurans RecJ,drRecJ)蛋白参与碱基切除修复途径的分子机制。相关研究成果论文“Participation of RecJ in the base excision repair pathway of Deinococcus radiodurans”(https://doi.org/10.1093/nar/gkaa714)发表在国际知名期刊《核酸研究》(Nucleic Acids Research)上。该研究围绕drRecJ蛋白如何参与碱基切除修复途径的问题展开,发现了5′—3′单链DNA核酸外切酶RecJ,同时,它也是一种非典型的无碱基位点裂解酶。
文摘The major role of DNA polymerase β was thought to be limited in its involvement in short patch base excision repair by removing 5’-deoxyribose phosphate and base insertion. However, the recent researches indicate that polymerase β might take part in a wide spectrum of DNA metabolism reactions, including long patch base excision repair, DNA replication, recombination, meiosis and transleisional DNA synthesis. Because of its wide and important cellular function, an inappropriate intracellular polymerase β level might be associated with genomic instability. Down-regulation or mutation of polymerase β is mutagenic due to deficient in DNA repair, while overexpression of this error-prone β polymerase might perturb the normal function of other accurate polymerases and cause genomic instability as well.
文摘无嘌呤/无嘧啶核酸内切酶/氧化还原因子1(apurinic/apyrim id inic endonuclease/redox-factor1,Ape/Ref-1)是一种在体内分布非常广泛的蛋白质,具有修复损伤的DNA,调节氧化还原反应,参与细胞信号转导等多种功能,在维持基因组的完整、调节基因表达、细胞保护等许多方面发挥重要作用。本文着重论述Ape/Ref-1的结构和生物学功能,及其在中枢神经系统肿瘤、损伤等疾病中的作用。
