一婴儿期发病的慢性家族性良性天疱疮家系ATP2C1基因突变研究

目的 对一慢性家族性良性天疱疮家系进行测序,寻找ATP2C1基因外显子上的突变点,丰富关于ATP2C1基因突变的信息。方法 提取一慢性家族性良性天疱疮家系中先证者及包括其父母、舅舅在内的家族中6名其他成员的外周血DNA进行测序,与人类基因组ATP2C1序列相比较找出突变点,另外测50例正常人血的ATP2C1基因,除外单核苷酸多态性。结果 家系中先证者、其舅舅及其母亲在ATP2C1的第9外显子上存在一杂合性的剪切突变,第699位缺失腺嘌呤（A）,导致其下游第12位的氨基酸序列出现终止密码TGA。反向测序亦证实该突变。该家系中先证者父亲、其他3名成员及50例正常人均未见该突变。结论 本研究慢性家族性良性天疱疮家系中先证者及其母亲及舅舅ATP2C1的第9外显子上存在一杂合性的剪切突变,突变来自于母系并向下遗传。     

家族性良性天疱疮ATP2C1基因突变研究

目的 探讨家族性良性天疱疮5个散发病例的ATP2C1基因突变.方法 5例来自门诊的散发病例,采集外周血,提取基因组DNA,采用PCR和DNA直接测序的方法,检测5个散发家族性良性天疱疮患者的ATP2C1基因突变,在100例正常人对照中予以验证.结果在5例具有典型临床表现,经皮肤病理和免疫病理确诊的散发家族性良性天疱疮患者,检测到5个未曾报道的ATP2C1基因突变位点,包括1个缺失突变(2025delG),3个错义突变(L269R,C348R,A651D),和1个无义突变(Q259x).100例正常人对照中均未检测到上述突变.结论 发现家族性良性天疱疮新的ATP2C1基因突变位点.     

家族性良性天疱疮ATP2C1基因突变研究

目的 探讨家族性良性天疱疮5个散发病例的ATP2C1基因突变.方法 5例来自门诊的散发病例,采集外周血,提取基因组DNA,采用PCR和DNA直接测序的方法,检测5个散发家族性良性天疱疮患者的ATP2C1基因突变,在100例正常人对照中予以验证.结果在5例具有典型临床表现,经皮肤病理和免疫病理确诊的散发家族性良性天疱疮患者,检测到5个未曾报道的ATP2C1基因突变位点,包括1个缺失突变(2025delG),3个错义突变(L269R,C348R,A651D),和1个无义突变(Q259x).100例正常人对照中均未检测到上述突变.结论 发现家族性良性天疱疮新的ATP2C1基因突变位点.     

家族性良性天疱疮ATP2C1基因突变研究

目的 探讨家族性良性天疱疮5个散发病例的ATP2C1基因突变。方法 5例来自门诊的散发病例,采集外周血,提取基因组DNA,采用PCR和DNA直接测序的方法,检测5个散发家族性良性天疱疮患者的ATP2C1基因突变,在100例正常人对照中予以验证。结果 在5例具有典型临床表现,经皮肤病理和免疫病理确诊的散发家族性良性天疱疮患者,检测到5个未曾报道的ATP2C1基因突变位点,包括1个缺失突变（2025delG）,3个错义突变（L269R,C348R,A651D）,和1个无义突变（Q259X）。100例正常人对照中均未检测到上述突变。结论 发现家族性良性天疱疮新的ATP2C1基因突变位点。     

一个家族性良性天疱疮致病基因的新突变位点

目的 对一个中国人家族性良性天疱疮（HHD）家系进行ATP2C1基因突变检测。方法 调查一个HHD家系3代9人,其中2例具有HHD的临床表现。收集该家系所有成员的外周血,提取基因组DNA,采用PCR扩增ATP2C1基因的27个外显子,用直接测序法进行DNA测序分析。同时设立100例无亲缘关系的正常人作为对照。 结果 在该家系的2例患者中均检测到1个尚未报道过的ATP2C1基因错义突变位点（M 661 R）。在该家系健康个体及无亲缘关系的正常对照均未发现相同突变。结论 在该HHD家系中发现ATP2C1基因一个新的特异性突变位点（M 661 R）。     

一家族性良性天疱疮家系致病基因的研究

目的 为了解家族性良性天疱疮家系的基因突变方式，以及基因型与临床表型之间的关系。方法 获得临床确诊患者及其家族成员外周血白细胞基因组DNA，设计针对ATP2C1基因的一系列PCR引物，运用单链构象多态性(SSCP)原理筛查此家族性良性天疱疮家系基因突变，用DNA直接测序明确具体的突变位置和方式，分析基因突变的病理意义。结果 此家系存在ATP2C1基因突变，第2068-2076位“TGTAGCCAT”突变成“AGATGGAACA”，造成开放阅读框架移位，出现提前终止密码子，使其编码的蛋白质丢失了一个ATP结合位点和3个钙离子结合位点，丧失了他原有的功能而致病；此家系患者基因型与临床表型无明确关系。结论 ATP2C1基因第21外显子突变是引起本家系家族性良性天疱疮的原因。     

家族性慢性良性天疱疮ATP2C1基因突变分析

目的探讨家族性慢性良性天疱疮(Hailey-Hailey disease,HHD)患者ATP2C1基因的突变情况。方法应用外周血DNA抽提、PCR和DNA直接测序等方法对中国非同族的2个HHD家系和2例散发患者的ATP2C1基因的27个外显子进行突变检测,并利用Pubmed和中国学术文献网络出版总库检索最近12年来国内外有关HHD患者ATP2C1基因突变分析的文献,统计分析结果。结果入组者发现1例剪切突变118-2A→G,1例错义突变K866T,1例无义突变S212X和1例缺失移码突变356fs2X。综述文献发现ATP2C1基因突变主要集中于3个功能区,此外还发现22外显子是亚洲人种HHD的高风险位点。结论这4例的突变方式目前国内外尚未见报道,可影响转录和翻译的结果,是造成相应家系和散发患者临床病变的特异突变。     

大疱及疱疹性皮肤病

20121985慢性家族性良性天疱疮两家系ATP2C1基因突变分析/许庆强(西安交大二附院皮肤科),程纯忠,霍佳…∥中国皮肤性病学杂志.-2012,26(6).-475～476,485对2例家族性良性天疱疮(HHD)家系ATP2C1基因中可能存在的突变进行鉴别。收集2个HHD家系和100份无亲缘关系正常人外周血标本,采用聚合酶链反应扩增ATP2C1基因的全部外显子并测序,结果和Genbank中相应序列进行比对。结果:家系1中所有患     

家族性良性天疱疮基因突变研究

目的 探讨家族性良性天疱疮17个先证者的ATP2C1基因突变。方法 采用PCR和DNA直接测序的方法，检测17个家族性良性天疱疮先证者的ATP2C1基因外显子区。结果 在9个先证者中检测到8个不同的ATP2C1基因突变位点，包括3个缺失突变（nt1464-1487／1462-1485del，1523delAT和2375delTTGT），3个剪接位点突变（360-2A→G，1415-2A→T和2243＋2T→C）及2个错义突变（P307L和D648Y）。120例正常人对照中均未检测到上述几种突变。结论 此8个ATP2C1基因突变是该病新的特异突变。     

慢性家族性良性天疱疮五家系ATP2C1基因突变分析

目的：检测中国汉族慢性家族性良性天疱疮5家系ATP2C1基因突变情况。方法：提取5家系中12例患者、13名表型正常及100名正常对照外周血基因组DNA，经PCR扩增后进行DNA测序，并使用Chromas软件解析。结果：家系1中3例患者存在ATP2C1基因第18号外显子c.1738A>G（p.I580V）突变，家系2 中2例患者存在ATP2C1基因第25号外显子c.2416C>T(p.R806*)突变，家系3中3例患者存在ATP2C1基因第15号外显子c.1250G>A（p.R417K）突变，家系4和家系5 中ATP2C1基因未发现突变。上述家系内表型正常个体及100名正常对照中均未检测到相应突变。结论：ATP2C1基因突变可能在3例汉族HHD家系内发挥致病作用。     

Detection and comparison of two types of ATP2C1 gene mutations in Chinese patients with Hailey–Hailey disease

The gene ATP2C1 is identified as the defective gene in Hailey–Hailey disease (HHD). The nonsense and missense are two common types of mutations and have ,respectively, been detected in many HHD patients. The aims of our study were to identify the pathogenic ATP2C1 abnormality in Chinese HHD patients, and to compare nonsense and missense mutations in vivo to provide further understanding of the molecular and the physiological basis of HHD. The nucleotide sequencing of the ATP2C1 gene was performed in HHD patients, unaffected family members and 100 unrelated individuals. Meanwhile, we detected and analyzed the clinical manifestations, the expression of ATP2C1 mRNA and hSPCA1 protein in the two types of mutations. Three heterozygous mutations were identified, including a previously reported nonsense mutation (R799X), two novel missense mutations (D644G) and (R417K). The results of comparisons between two types of mutations showed that the common clinical features, the similarly low-level expressions of ATP2C1 mRNA and hSPCA1 protein, but the ATP2C1 mRNA expression of nonsense mutation was lower than missense mutation and even less than half the level of normal people. Our findings expand the known spectrum of ATP2C1 mutations in HHD. We supported the haploinsufficiency theory as prevalent mechanism in both types of mutations, and believed that the differences of ATP2C1 mRNA expressions in peripheral blood may relate with the type of mutation and reflect the state of illness of patients.     

毛囊角化病一家系及三例散发患者ATP2A2基因突变研究

目的：对毛囊角化病（Darier's disease, DD）一家系及三例散发患者进行ATP2A2基因的突变分析。方法：收集先证者及其家系成员、散发病例的临床资料和外周血,采用PCR技术扩增ATP2A2基因所有编码区及侧翼序列,用Sanger法测序检测潜在的突变,选取与患者无亲缘关系的100例健康人作为对照,同时对已报道的ATP2A2基因突变进行文献回顾。结果：家系中三例患者均检测出ATP2A2基因第5号外显子c.380 G>A(p.G127D)新发错义突变;散发患者S1检测出第13号外显子C.1676G>A(p.R559Q)错义突变,散发患者S2检测出第14号外显子c. 2001C>T(p.D667D)同义突变,散发患者S3未检测出突变。结论：本研究中共发现三个突变,其中c.380G>A(p.G127D)在中国人群中首次报道,拓展了ATP2A2的基因突变谱。     

Mutation analysis of the ATP2C1 gene in Taiwanese patients with Hailey-Hailey disease

BackgroundHailey-Hailey disease (HHD) is an autosomal dominant disorder with recurrent pruritic vesicles and erosions, and scaly erythematous plaques, particularly involving intertriginous areas such as the neck, axillae, groins and perineum. Histopathology shows intraepidermal vesiculation with acantholysis in the suprabasal layer. It is caused by heterozygous mutations in the ATP2C1 gene, which encodes for the human secretory pathway Ca²⁺/Mn²⁺ ATPase 1. In this study, we analyze the mutations of the ATP2C1 gene in 26 Taiwanese patients with HHD.MethodsIn total, 21 familial cases from seven families and 5 sporadic cases (including 7 previously reported) were retrieved from the medical records. The diagnosis of HHD was made based on the characteristic clinical features and histopathological evidence. All 27 exons and flanking intron boundaries were amplified by polymerase chain reaction and the products were analyzed by direct sequencing.ResultsWe identified three nonsense mutations (R39X, R468X, R783X), two splice-site mutations (483 + 2t→a, 832G→A), four deletion mutations (nt884-904del, 1459delCTCA, 1874delA, 1975delA) and one missense mutation (A730T). Two unrelated families with nonsense mutation R783X had the comorbidity of chronic schizophrenia since the third decade.ConclusionsWe report two novel mutations (832G→A and 1874delA) of ATP2C1 involved in HHD. The nonsense mutation R783X might represent a mutational “hotspot” in the ATP2C1 gene. The present study demonstrates that a spectrum of ATP2C1 gene mutations is present in Taiwanese HHD patients.     

Two novel mutations of the ATP2C1 gene in Chinese patients with Hailey–Hailey disease

Hailey–Hailey disease (HHD; OMIM 169600) is an autosomal dominant blistering disease. Pathogenic mutations in ATP2C1 encoding the human secretory pathway Ca²⁺/Mn²⁺-ATPase protein 1 (hSPCA1) have been identified since 2000. The aim of this study was to report a Chinese pedigree and a sporadic case of HHD and to explore the genetic mutations. The Chinese pedigree and the sporadic case of typical HHD were subjected to mutation detection of ATP2C1. The 27 coding exons and their flanking sequences were amplified and sequenced. The heterozygous C to T transition at nucleotide 2753 in exon 26 and G to T transition at nucleotide 2090 in exon 21 of the ATP2C1 gene were identified in a pedigree and a sporadic case of HHD, respectively. The C2753T transition resulted in a novel nonsense mutation of glutamine codon (CAG) to a stop codon (TAG) at amino acid residue 865 (Q865X) and the G2090T transition resulted in a novel missense mutation of glycine condon (GGA) to Valine (GUA) at amino acid residue 645 (G645V) in hSPCA1. This study should be useful for genetic counseling and prenatal diagnosis for affected families and in expanding the repertoire of ATP2C1 mutations underlying HHD. This work was supported by grant from the Natural Science Foundation of China (30471564).     

哈萨克族毛囊角化病一家系ATP2A2基因突变研究

目的 探讨哈萨克族毛囊角化病一家系患者ATP2A2基因突变.方法 收集哈萨克族毛囊角化病49人家系的临床资料,采集44名家系成员和100例无亲缘关系健康人外周血,提取基因组DNA.采用PCR和DNA测序对该家系进行ATP2A2基因突变检测.结果 该家系毛囊角化病遗传方式属于常染色体显性遗传.家系中11例患者在ATP2A2基因12号外显子的剪切位点发生杂合突变(1288-1G→A),即第1288-1位碱基由G突变为A,而家系中33例正常成员及100例健康对照均未发现该突变.结论 该家系毛囊角化病发病可能是由ATP2A2基因12号外显子的剪切位点发生杂合突变(1288-1G→A)所致.     

Novel mutation in ATP2C1 gene in a Japanese patient with Hailey-Hailey disease

Hailey-Hailey disease (HHD) is an autosomal dominant disorder with recurrent eruption of vesicles and bullae involving predominantly the neck, groin and axillary regions. Histopathology shows suprabasal cleavage in epidermal cells. Recent studies have revealed that HHD is caused by mutations in the ATP2C1 gene encoding a novel Ca(2+) pump. We analyzed mutations of the ATP2C1 gene in 2 Japanese patients with HHD. The diagnosis of HHD was made based on the characteristic clinical features and histopathological evidence. All 27 exons and flanking intron boundaries were amplified by polymerase chain reaction and products analyzed by sequencing. As a result, we identified a novel missense mutation (A1087G) in exon 13 of the ATP2C1 gene in a patient. This mutation led the amino acid change from Thrto Ala in the phosphorylation protein domain. Another patient showed no mutation of the gene. These results demonstrate that a spectrum of ATP2C1 gene mutations is present in Japanese HHD patients.