In recent years,the histone methyltransferase SET domain containing 2(SETD2)has garnered significant attention for its involvement in carcinogenesis.Herein we aim to summarize the research advances regarding SETD2 in ...In recent years,the histone methyltransferase SET domain containing 2(SETD2)has garnered significant attention for its involvement in carcinogenesis.Herein we aim to summarize the research advances regarding SETD2 in tumors,elucidate the role in global epigenetic regulation,highlight potential therapeutic regimens for patients with SETD2 deficiency,and outline future research directions.展开更多
BACKGROUND The SETD1B gene is instrumental in human intelligence and nerve development.Mutations in the SETD1B gene have been linked in recent studies to neurodevelopmental disorders,seizures,and language delay.CASE S...BACKGROUND The SETD1B gene is instrumental in human intelligence and nerve development.Mutations in the SETD1B gene have been linked in recent studies to neurodevelopmental disorders,seizures,and language delay.CASE SUMMARY This study aimed to analyze the clinical manifestations and treatment of three patients suffering from mental retardation,epilepsy,and language delay resulting from a new mutation in the SETD1B gene.Three individuals with these symptoms were selected,and their clinical symptoms,gene test results,and treatment were analyzed.This article discusses the impact of the SETD1B gene mutation on patients and outlines the treatment approach.Among the three patients(two females and one male,aged 8,4,and 1,respectively),all exhibited psychomotor retardation,attention deficit,and hyperactivity disorder,and two had epilepsy.Antiepileptic treatment with sodium tripolyvalproate halted the seizures in the affected child,although mental development remained somewhat delayed.Whole exome sequencing revealed new mutations in the SETD1B gene for all patients,specifically with c.5473C>T(p.Arg1825trp),c.4120C>T(p.Gln1374*,593),c.14_15insC(p.His5Hisfs*33).CONCLUSION Possessing the SETD1B gene mutation may cause mental retardation accompanied by seizures and language delay.Although the exact mechanism is not fully understood,interventions such as drug therapy,rehabilitation training,and family support can assist patients in managing their symptoms and enhancing their quality of life.Furthermore,genetic testing supplies healthcare providers with more precise diagnostic and therapeutic guidance,informs families about genetic disease risks,and contributes to understanding disease pathogenesis and drug research and development.展开更多
目的分析甲基转移酶SETD2表达改变对人鼻咽癌(NPC)细胞中蛋白表达谱的影响并富集差异信号通路。方法提取SETD2基因敲除细胞株CNE1SETD2-KO和野生型细胞CNE1WT的总蛋白,利用Tandem Mass Tag(TMT)标记蛋白质定量技术和串联质谱分析技术筛...目的分析甲基转移酶SETD2表达改变对人鼻咽癌(NPC)细胞中蛋白表达谱的影响并富集差异信号通路。方法提取SETD2基因敲除细胞株CNE1SETD2-KO和野生型细胞CNE1WT的总蛋白,利用Tandem Mass Tag(TMT)标记蛋白质定量技术和串联质谱分析技术筛选出差异表达蛋白质,应用GO数据库对差异表达蛋白质进行注释和富集,应用KEGG数据库进行差异蛋白质涉及信号通路富集。结果以表达倍数(FC)≥1.2倍且P<0.05为筛选标准,SETD2基因敲除的CNE1细胞鉴别出2049个差异表达蛋白质,其中904个表达上调,1145个表达下调。GO功能注释结果表明,SETD2敲除后在生物过程(细胞过程及调节,细胞运动、代谢过程及细胞组分的生物合成)、分子功能(催化活性及分子结合、转录因子活性)和细胞组分(胞膜、细胞器、大分子复合物)等具有特征性。KEGG信号富集结果表明SETD2敲除主要影响与肿瘤关系密切的信号有MAPK、PI3K-Akt、Ras、Rap1、mTOR、Hippo、HIF-1、Wnt、AMPK、FoxO、ErbB、p53、JAK-STAT等。结论SETD2敲除后显著改变了NPC细胞中蛋白质表达特征并影响多条与肿瘤关系密切的信号通路,研究结果为NPC的发病机制和治疗标靶筛选提供了参考。展开更多
目的构建并鉴定SETD4基因敲除小鼠,为研究SETD4的生物学功能提供动物模型。方法将引进的SETD4flox/+小鼠与EIIa-Cre小鼠进行杂交繁殖,得到基因型为SETD4+/-.EIIa-Cre的小鼠;再与C57BL/6小鼠杂交去除Cre酶,获得杂合子SETD4+/-小鼠;该小...目的构建并鉴定SETD4基因敲除小鼠,为研究SETD4的生物学功能提供动物模型。方法将引进的SETD4flox/+小鼠与EIIa-Cre小鼠进行杂交繁殖,得到基因型为SETD4+/-.EIIa-Cre的小鼠;再与C57BL/6小鼠杂交去除Cre酶,获得杂合子SETD4+/-小鼠;该小鼠自交获得纯合子SETD4-/-小鼠。通过PCR法鉴定子代小鼠的基因型;RT-PCR、荧光定量PCR方法鉴定纯合子的SETD4基因敲除小鼠SETD4m RNA表达情况;HE染色观察小鼠肝、肺组织的形态学变化。结果 PCR结果表明子代小鼠的基因型符合SETD4-/-;纯合子基因敲除小鼠SETD4 m RNA水平显著低于野生型小鼠;SETD4基因敲除小鼠肝、肺组织的形态学特征与野生型小鼠相比无明显差异。结论本研究基于Cre/loxp系统,成功构建并鉴定了SETD4基因敲除小鼠。展开更多
目的通过昆虫杆状病毒表达系统表达SETD4(SET domain-containing 4)蛋白,并纯化SETD4蛋白,为深入探讨SETD4的功能奠定基础。方法提取小鼠正常肝组织的RNA,通过RT-PCR扩增SETD4基因,并克隆至p Fast Bac-HTB构建重组载体,再转座获得重组杆...目的通过昆虫杆状病毒表达系统表达SETD4(SET domain-containing 4)蛋白,并纯化SETD4蛋白,为深入探讨SETD4的功能奠定基础。方法提取小鼠正常肝组织的RNA,通过RT-PCR扩增SETD4基因,并克隆至p Fast Bac-HTB构建重组载体,再转座获得重组杆粒;通过脂质体介导将重组杆粒转染SF9细胞产生重组病毒,扩增病毒感染细胞并获得重组蛋白;利用Ni2+亲和柱来纯化蛋白,并通过Western Blot及考马斯亮蓝染色鉴定SETD4蛋白。结果经双酶切鉴定及测序证实SETD4基因插入了供体质粒;经PCR鉴定证实SETD4基因插入了穿梭载体;经考马斯亮蓝染色证实纯化得到重组蛋白,用His-Tag抗体和SETD4特异性抗体在50 k D处可检测到目的条带。结论成功利用昆虫杆状病毒表达系统够表达了SETD4,并纯化了SETD4。展开更多
SETD2是哺乳动物中唯一的组蛋白H3K36的特异性三甲基转移酶,它的编码基因位于第三号染色体的3p21.31区域。SETD2蛋白是一个230 k D、含有SET结构域的蛋白,最早是由人造血干细胞分离的,也被认为是与亨廷顿病的发病机制相关。它是生物转...SETD2是哺乳动物中唯一的组蛋白H3K36的特异性三甲基转移酶,它的编码基因位于第三号染色体的3p21.31区域。SETD2蛋白是一个230 k D、含有SET结构域的蛋白,最早是由人造血干细胞分离的,也被认为是与亨廷顿病的发病机制相关。它是生物转录延伸过程中的重要组成部分,能够与RNA聚合酶Ⅱ的最大亚基Rbp1结合,参与基因的转录延伸。SETD2还能通过编码区的去乙酰化抑制转录起始的频率以保证基因转录的高保真度,从而预防肿瘤的发生;同时SETD2也能激活转录因子p53及下游凋亡靶基因发挥抑癌作用。SETD2在DNA修复方面也具有重要作用,它是人错配基因修复和人同源基因修复过程中不可缺少的重要部分。已经有研究表明在多种肿瘤中SETD2均发生了突变,包括肾透明细胞癌、小儿晚期神经胶质瘤、急性T淋巴细胞白血病等,对某些特定肿瘤的分期和预后也有显著影响。本文将介绍SETD2在人体内的多种功能,并对其在肿瘤发生发展中的作用机制进行综述。展开更多
基金This work was supported by the National Natural Science Foundation of China(Grant Nos.82073105 and 32370833)the State Key Laboratory of Systems Medicine for Cancer(Grant No.KF2412).
文摘In recent years,the histone methyltransferase SET domain containing 2(SETD2)has garnered significant attention for its involvement in carcinogenesis.Herein we aim to summarize the research advances regarding SETD2 in tumors,elucidate the role in global epigenetic regulation,highlight potential therapeutic regimens for patients with SETD2 deficiency,and outline future research directions.
基金Key Health Science and Technology Development Project of Nanjing City,Jiangsu Province,No.ZKX19038.
文摘BACKGROUND The SETD1B gene is instrumental in human intelligence and nerve development.Mutations in the SETD1B gene have been linked in recent studies to neurodevelopmental disorders,seizures,and language delay.CASE SUMMARY This study aimed to analyze the clinical manifestations and treatment of three patients suffering from mental retardation,epilepsy,and language delay resulting from a new mutation in the SETD1B gene.Three individuals with these symptoms were selected,and their clinical symptoms,gene test results,and treatment were analyzed.This article discusses the impact of the SETD1B gene mutation on patients and outlines the treatment approach.Among the three patients(two females and one male,aged 8,4,and 1,respectively),all exhibited psychomotor retardation,attention deficit,and hyperactivity disorder,and two had epilepsy.Antiepileptic treatment with sodium tripolyvalproate halted the seizures in the affected child,although mental development remained somewhat delayed.Whole exome sequencing revealed new mutations in the SETD1B gene for all patients,specifically with c.5473C>T(p.Arg1825trp),c.4120C>T(p.Gln1374*,593),c.14_15insC(p.His5Hisfs*33).CONCLUSION Possessing the SETD1B gene mutation may cause mental retardation accompanied by seizures and language delay.Although the exact mechanism is not fully understood,interventions such as drug therapy,rehabilitation training,and family support can assist patients in managing their symptoms and enhancing their quality of life.Furthermore,genetic testing supplies healthcare providers with more precise diagnostic and therapeutic guidance,informs families about genetic disease risks,and contributes to understanding disease pathogenesis and drug research and development.
文摘目的分析甲基转移酶SETD2表达改变对人鼻咽癌(NPC)细胞中蛋白表达谱的影响并富集差异信号通路。方法提取SETD2基因敲除细胞株CNE1SETD2-KO和野生型细胞CNE1WT的总蛋白,利用Tandem Mass Tag(TMT)标记蛋白质定量技术和串联质谱分析技术筛选出差异表达蛋白质,应用GO数据库对差异表达蛋白质进行注释和富集,应用KEGG数据库进行差异蛋白质涉及信号通路富集。结果以表达倍数(FC)≥1.2倍且P<0.05为筛选标准,SETD2基因敲除的CNE1细胞鉴别出2049个差异表达蛋白质,其中904个表达上调,1145个表达下调。GO功能注释结果表明,SETD2敲除后在生物过程(细胞过程及调节,细胞运动、代谢过程及细胞组分的生物合成)、分子功能(催化活性及分子结合、转录因子活性)和细胞组分(胞膜、细胞器、大分子复合物)等具有特征性。KEGG信号富集结果表明SETD2敲除主要影响与肿瘤关系密切的信号有MAPK、PI3K-Akt、Ras、Rap1、mTOR、Hippo、HIF-1、Wnt、AMPK、FoxO、ErbB、p53、JAK-STAT等。结论SETD2敲除后显著改变了NPC细胞中蛋白质表达特征并影响多条与肿瘤关系密切的信号通路,研究结果为NPC的发病机制和治疗标靶筛选提供了参考。
文摘目的构建并鉴定SETD4基因敲除小鼠,为研究SETD4的生物学功能提供动物模型。方法将引进的SETD4flox/+小鼠与EIIa-Cre小鼠进行杂交繁殖,得到基因型为SETD4+/-.EIIa-Cre的小鼠;再与C57BL/6小鼠杂交去除Cre酶,获得杂合子SETD4+/-小鼠;该小鼠自交获得纯合子SETD4-/-小鼠。通过PCR法鉴定子代小鼠的基因型;RT-PCR、荧光定量PCR方法鉴定纯合子的SETD4基因敲除小鼠SETD4m RNA表达情况;HE染色观察小鼠肝、肺组织的形态学变化。结果 PCR结果表明子代小鼠的基因型符合SETD4-/-;纯合子基因敲除小鼠SETD4 m RNA水平显著低于野生型小鼠;SETD4基因敲除小鼠肝、肺组织的形态学特征与野生型小鼠相比无明显差异。结论本研究基于Cre/loxp系统,成功构建并鉴定了SETD4基因敲除小鼠。
文摘目的通过昆虫杆状病毒表达系统表达SETD4(SET domain-containing 4)蛋白,并纯化SETD4蛋白,为深入探讨SETD4的功能奠定基础。方法提取小鼠正常肝组织的RNA,通过RT-PCR扩增SETD4基因,并克隆至p Fast Bac-HTB构建重组载体,再转座获得重组杆粒;通过脂质体介导将重组杆粒转染SF9细胞产生重组病毒,扩增病毒感染细胞并获得重组蛋白;利用Ni2+亲和柱来纯化蛋白,并通过Western Blot及考马斯亮蓝染色鉴定SETD4蛋白。结果经双酶切鉴定及测序证实SETD4基因插入了供体质粒;经PCR鉴定证实SETD4基因插入了穿梭载体;经考马斯亮蓝染色证实纯化得到重组蛋白,用His-Tag抗体和SETD4特异性抗体在50 k D处可检测到目的条带。结论成功利用昆虫杆状病毒表达系统够表达了SETD4,并纯化了SETD4。
文摘SETD2是哺乳动物中唯一的组蛋白H3K36的特异性三甲基转移酶,它的编码基因位于第三号染色体的3p21.31区域。SETD2蛋白是一个230 k D、含有SET结构域的蛋白,最早是由人造血干细胞分离的,也被认为是与亨廷顿病的发病机制相关。它是生物转录延伸过程中的重要组成部分,能够与RNA聚合酶Ⅱ的最大亚基Rbp1结合,参与基因的转录延伸。SETD2还能通过编码区的去乙酰化抑制转录起始的频率以保证基因转录的高保真度,从而预防肿瘤的发生;同时SETD2也能激活转录因子p53及下游凋亡靶基因发挥抑癌作用。SETD2在DNA修复方面也具有重要作用,它是人错配基因修复和人同源基因修复过程中不可缺少的重要部分。已经有研究表明在多种肿瘤中SETD2均发生了突变,包括肾透明细胞癌、小儿晚期神经胶质瘤、急性T淋巴细胞白血病等,对某些特定肿瘤的分期和预后也有显著影响。本文将介绍SETD2在人体内的多种功能,并对其在肿瘤发生发展中的作用机制进行综述。
