用等位基因组特异性引物扩增技术确认HLA-B新等位基因B*15:129

目的 对人类白细胞抗原(human leukocyte antigen,HLA)新等位基因HLA-B*15:129的第2～4外显子序列进行分析.方法 采用商用抽提试剂盒抽提标本DNA,应用等位基因组特异性引物PCR方法扩增先证者标本HLA-B基因第2～4外显子,PCR产物经酶切纯化后直接进行HLA-B基因第2～4外显子双向测序分析.结果 先证者标本存在2个HLA-B等位基因,1个等位基因为B*07:02,另1个经Blast验证为新的等位基因,新的等位基因序列已递交GenBank(EF473219),经世界卫生组织HLA命名委员会正式命名为HLA-B*15:129.HLA-B*15:129第2～4外显子序列与最接近的B*15:01:01:01相比,第3外显子存在3个碱基的不同,即第362位G→A、363位G→T、369位C→T改变,导致第97位氨基酸Arg→Asn.结论 发现1例新的HLA-B等位基因,被世界卫生组织HLA基因命名委员会正式命名为HLA-B*15:129.

Abstract：

Objective To analyze the sequence of the exons 2-4 of human leukocyte antigen (HLA) novel allele HLA-B*15:129.Methods DNA of the proband was extracted from whole blood by commercial DNA extraction kit. The amplification for HLA-B exons 2-4 was performed separately by polymerase chain reaction (PCR) with allele group specific primers. The PCR products were digested with enzymes and then directly sequenced for exons 2-4 of HLA-B locus in both directions.Results Sequencing results showed the HLA-B alleles of the proband included B*07:02 and a novel allele. The sequence of the novel allele has been submitted to GenBank (accession no. EF473219) and the allele has been officially named B*15:129 by the WHO Nomenclature Committee. Comparing with the HLA-B*15:01:01:01, the sequence of exons 2-4 of HLA-B*15:129 showed three nucleotide difference in exon 3 at positions 362 and 363 from GG to AT and positions 369 from C to T, which resulted in an amino acid change from Arg to Asn at codon 97.Conclusion A novel HLA-B allele was identified and has been officially named B15:129 by the WHO Nomenclature Committee.     

人类白细胞抗原新等位基因B*54:09的序列分析

目的 鉴定1名中国人白细胞抗原(human leukocyte antigen,HLA)新等位基因.方法 应用基于Luminex平台的聚合酶链反应-序列特异性寡核苷酸探针(polymerase chain reaction-sequence specific oligonucleotide probes,PCR-SSOP)方法对先证者进行HLA基因分型、PCR产物测序和基因克隆DNA测序,通过软件分析该基因序列并与同源性最高的HLA等位基因比较序列差异.结果 PCR-SSOP基因分型显示先证者HLA-B位点反应格局异常,疑为HLA新等位基因.基因克隆后测序结果显示,其中1个等位基因为B*59:01,另一个等位基因序列与所有已知HLA等位基因不同,与同源性最高的HLA-B* 54:06基因序列相比,在第3外显子有6个核苷酸不同(nt486G→C、nt527A→T、nt538T→C、nt539G→T、nt559 C→A和nt560 T→C),导致了3个氨基酸改变,152位氨基酸由Glu→Val,156位氨基酸Trp→Leu和163位氨基酸Leu→Thr.结论 该等位基因为HLA新等位基因,被世界卫生组织HLA因子命名委员会正式命名为HLA-B* 54:09.     

HLA-DRB1*1218新等位基因克隆测序鉴定及内含子序列分析

Objective To identify a novel human leukocyte antigen (HLA) allele by cloning and sequence-based typing in Chinese population, and analyzing the sequence of the introns 1 and 2. Methods The routine HLA-A, -B, -DRB1 low resolution genotyping for stem cell donor from Guangdong province was performed with polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP). An unknown HLA-DRB1 allele was initially detected by HLA typing. Genomic DNA of the proband was amplified by using HLA-DRB1 locus group-specific primer, the amplified product was cloned, sequenced, and compared to the closest DRB1 * 120201 allele and the closest intron sequence of the DRB1 * 030101 allele. Results The sequencing results showed that a normal DRB1 * 080302 and a novel DRB1 * 1218 variant allele were identified. The sequence of the novel allele has been submitted to GenBank (FJ481086). The novel allele had 1 nucleotide substitution of the closest matching allele HLA-DRB1 * 120201 at nt262(G →C) in exon 2, resulting in an amino acid change from GIu(GAG)→Gln (CAG) at codon 59. The intron 2 sequence is identical between the novel HLA-DRB1 * 1218 and DRB1 * 030101, but there are 12 nucleotides substitution in intron 1. Conclusion A novel HLA allele was confirmed by cloning and sequence-based typing in Chinese. It was officially designated as HLA-DRB1 * 1218 by WHO Nomenclature Committee.     

HLA-DRB1*1218新等位基因克隆测序鉴定及内含子序列分析

Objective To identify a novel human leukocyte antigen (HLA) allele by cloning and sequence-based typing in Chinese population, and analyzing the sequence of the introns 1 and 2. Methods The routine HLA-A, -B, -DRB1 low resolution genotyping for stem cell donor from Guangdong province was performed with polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP). An unknown HLA-DRB1 allele was initially detected by HLA typing. Genomic DNA of the proband was amplified by using HLA-DRB1 locus group-specific primer, the amplified product was cloned, sequenced, and compared to the closest DRB1 * 120201 allele and the closest intron sequence of the DRB1 * 030101 allele. Results The sequencing results showed that a normal DRB1 * 080302 and a novel DRB1 * 1218 variant allele were identified. The sequence of the novel allele has been submitted to GenBank (FJ481086). The novel allele had 1 nucleotide substitution of the closest matching allele HLA-DRB1 * 120201 at nt262(G →C) in exon 2, resulting in an amino acid change from GIu(GAG)→Gln (CAG) at codon 59. The intron 2 sequence is identical between the novel HLA-DRB1 * 1218 and DRB1 * 030101, but there are 12 nucleotides substitution in intron 1. Conclusion A novel HLA allele was confirmed by cloning and sequence-based typing in Chinese. It was officially designated as HLA-DRB1 * 1218 by WHO Nomenclature Committee.     

HLA-DRB1*1218新等位基因克隆测序鉴定及内含子序列分析

Objective To identify a novel human leukocyte antigen (HLA) allele by cloning and sequence-based typing in Chinese population, and analyzing the sequence of the introns 1 and 2. Methods The routine HLA-A, -B, -DRB1 low resolution genotyping for stem cell donor from Guangdong province was performed with polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP). An unknown HLA-DRB1 allele was initially detected by HLA typing. Genomic DNA of the proband was amplified by using HLA-DRB1 locus group-specific primer, the amplified product was cloned, sequenced, and compared to the closest DRB1 * 120201 allele and the closest intron sequence of the DRB1 * 030101 allele. Results The sequencing results showed that a normal DRB1 * 080302 and a novel DRB1 * 1218 variant allele were identified. The sequence of the novel allele has been submitted to GenBank (FJ481086). The novel allele had 1 nucleotide substitution of the closest matching allele HLA-DRB1 * 120201 at nt262(G →C) in exon 2, resulting in an amino acid change from GIu(GAG)→Gln (CAG) at codon 59. The intron 2 sequence is identical between the novel HLA-DRB1 * 1218 and DRB1 * 030101, but there are 12 nucleotides substitution in intron 1. Conclusion A novel HLA allele was confirmed by cloning and sequence-based typing in Chinese. It was officially designated as HLA-DRB1 * 1218 by WHO Nomenclature Committee.     

HLA-DRB1*1218新等位基因克隆测序鉴定及内含子序列分析

Objective To identify a novel human leukocyte antigen (HLA) allele by cloning and sequence-based typing in Chinese population, and analyzing the sequence of the introns 1 and 2. Methods The routine HLA-A, -B, -DRB1 low resolution genotyping for stem cell donor from Guangdong province was performed with polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP). An unknown HLA-DRB1 allele was initially detected by HLA typing. Genomic DNA of the proband was amplified by using HLA-DRB1 locus group-specific primer, the amplified product was cloned, sequenced, and compared to the closest DRB1 * 120201 allele and the closest intron sequence of the DRB1 * 030101 allele. Results The sequencing results showed that a normal DRB1 * 080302 and a novel DRB1 * 1218 variant allele were identified. The sequence of the novel allele has been submitted to GenBank (FJ481086). The novel allele had 1 nucleotide substitution of the closest matching allele HLA-DRB1 * 120201 at nt262(G →C) in exon 2, resulting in an amino acid change from GIu(GAG)→Gln (CAG) at codon 59. The intron 2 sequence is identical between the novel HLA-DRB1 * 1218 and DRB1 * 030101, but there are 12 nucleotides substitution in intron 1. Conclusion A novel HLA allele was confirmed by cloning and sequence-based typing in Chinese. It was officially designated as HLA-DRB1 * 1218 by WHO Nomenclature Committee.     

HLA-DRB1*1218新等位基因克隆测序鉴定及内含子序列分析

Objective To identify a novel human leukocyte antigen (HLA) allele by cloning and sequence-based typing in Chinese population, and analyzing the sequence of the introns 1 and 2. Methods The routine HLA-A, -B, -DRB1 low resolution genotyping for stem cell donor from Guangdong province was performed with polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP). An unknown HLA-DRB1 allele was initially detected by HLA typing. Genomic DNA of the proband was amplified by using HLA-DRB1 locus group-specific primer, the amplified product was cloned, sequenced, and compared to the closest DRB1 * 120201 allele and the closest intron sequence of the DRB1 * 030101 allele. Results The sequencing results showed that a normal DRB1 * 080302 and a novel DRB1 * 1218 variant allele were identified. The sequence of the novel allele has been submitted to GenBank (FJ481086). The novel allele had 1 nucleotide substitution of the closest matching allele HLA-DRB1 * 120201 at nt262(G →C) in exon 2, resulting in an amino acid change from GIu(GAG)→Gln (CAG) at codon 59. The intron 2 sequence is identical between the novel HLA-DRB1 * 1218 and DRB1 * 030101, but there are 12 nucleotides substitution in intron 1. Conclusion A novel HLA allele was confirmed by cloning and sequence-based typing in Chinese. It was officially designated as HLA-DRB1 * 1218 by WHO Nomenclature Committee.     

HLA-DRB1*1218新等位基因克隆测序鉴定及内含子序列分析

Objective To identify a novel human leukocyte antigen (HLA) allele by cloning and sequence-based typing in Chinese population, and analyzing the sequence of the introns 1 and 2. Methods The routine HLA-A, -B, -DRB1 low resolution genotyping for stem cell donor from Guangdong province was performed with polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP). An unknown HLA-DRB1 allele was initially detected by HLA typing. Genomic DNA of the proband was amplified by using HLA-DRB1 locus group-specific primer, the amplified product was cloned, sequenced, and compared to the closest DRB1 * 120201 allele and the closest intron sequence of the DRB1 * 030101 allele. Results The sequencing results showed that a normal DRB1 * 080302 and a novel DRB1 * 1218 variant allele were identified. The sequence of the novel allele has been submitted to GenBank (FJ481086). The novel allele had 1 nucleotide substitution of the closest matching allele HLA-DRB1 * 120201 at nt262(G →C) in exon 2, resulting in an amino acid change from GIu(GAG)→Gln (CAG) at codon 59. The intron 2 sequence is identical between the novel HLA-DRB1 * 1218 and DRB1 * 030101, but there are 12 nucleotides substitution in intron 1. Conclusion A novel HLA allele was confirmed by cloning and sequence-based typing in Chinese. It was officially designated as HLA-DRB1 * 1218 by WHO Nomenclature Committee.     

HLA-DRB1*1218新等位基因克隆测序鉴定及内含子序列分析

Objective To identify a novel human leukocyte antigen (HLA) allele by cloning and sequence-based typing in Chinese population, and analyzing the sequence of the introns 1 and 2. Methods The routine HLA-A, -B, -DRB1 low resolution genotyping for stem cell donor from Guangdong province was performed with polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP). An unknown HLA-DRB1 allele was initially detected by HLA typing. Genomic DNA of the proband was amplified by using HLA-DRB1 locus group-specific primer, the amplified product was cloned, sequenced, and compared to the closest DRB1 * 120201 allele and the closest intron sequence of the DRB1 * 030101 allele. Results The sequencing results showed that a normal DRB1 * 080302 and a novel DRB1 * 1218 variant allele were identified. The sequence of the novel allele has been submitted to GenBank (FJ481086). The novel allele had 1 nucleotide substitution of the closest matching allele HLA-DRB1 * 120201 at nt262(G →C) in exon 2, resulting in an amino acid change from GIu(GAG)→Gln (CAG) at codon 59. The intron 2 sequence is identical between the novel HLA-DRB1 * 1218 and DRB1 * 030101, but there are 12 nucleotides substitution in intron 1. Conclusion A novel HLA allele was confirmed by cloning and sequence-based typing in Chinese. It was officially designated as HLA-DRB1 * 1218 by WHO Nomenclature Committee.     

HLA-DRB1*1218新等位基因克隆测序鉴定及内含子序列分析

Objective To identify a novel human leukocyte antigen (HLA) allele by cloning and sequence-based typing in Chinese population, and analyzing the sequence of the introns 1 and 2. Methods The routine HLA-A, -B, -DRB1 low resolution genotyping for stem cell donor from Guangdong province was performed with polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP). An unknown HLA-DRB1 allele was initially detected by HLA typing. Genomic DNA of the proband was amplified by using HLA-DRB1 locus group-specific primer, the amplified product was cloned, sequenced, and compared to the closest DRB1 * 120201 allele and the closest intron sequence of the DRB1 * 030101 allele. Results The sequencing results showed that a normal DRB1 * 080302 and a novel DRB1 * 1218 variant allele were identified. The sequence of the novel allele has been submitted to GenBank (FJ481086). The novel allele had 1 nucleotide substitution of the closest matching allele HLA-DRB1 * 120201 at nt262(G →C) in exon 2, resulting in an amino acid change from GIu(GAG)→Gln (CAG) at codon 59. The intron 2 sequence is identical between the novel HLA-DRB1 * 1218 and DRB1 * 030101, but there are 12 nucleotides substitution in intron 1. Conclusion A novel HLA allele was confirmed by cloning and sequence-based typing in Chinese. It was officially designated as HLA-DRB1 * 1218 by WHO Nomenclature Committee.     

Identification of a novel HLA-B allele, HLA-B*3713, in a Chinese individual

A novel human leukocyte antigen (HLA) class I allele, HLA-B*3713, has been identified in a Chinese individual. The HLA-B*3713 allele differs from the closest matching allele B*370101 by one nucleotide substitutions in exon 3 at nt 527(T-->A), resulting in an amino acid change from Val (GTG) to Glu (GAG) at codon 152.     

DNA序列分析鉴定HLA新等位基因B*4446

目的鉴定中国人群的HLA新等位基因。方法使用PCR-序列特异性引物及PCR-序列特异性寡核苷酸探针技术进行HLA分型。发现1个与HLA-B*44相关的未知基因,使用DNA序列分析技术鉴定并分析该基因与同源性最高的B*4409基因序列的差异。结果新基因第3外显子区域序列与所有已知的HLA-B等位基因序列均不相同,与同源性最高的HLA-B*4409基因序列相比有3个碱基发生替代。第538位碱基由G→C,第539位碱基A→T以及第540位碱基C→G,使编码产物180位氨基酸由天冬氨酸变成亮氨酸。结论发现一个新的HLA-B等位基因,于2005年9月由WHOHLA因子命名委员会正式命名为HLA-B*4446。     

A new HLA-B*51 variant, B*5158, identified by sequence-based typing in a Korean individual

A novel human leukocyte antigen (HLA)-B*51 allele, officially named HLA-B*5158, was identified in the cord blood from Korean. HLA-B*5158 allele shows single nucleotide difference from B*510101 in exon 2 at nucleotide position 214 (C/T), resulting in an amino acid substitution, Trp48Arg.     

Characterization of a new HLA-B allele, HLA-B*5312, and re-evaluation of the published sequences of the untranslated regions of HLA-B*35 and HLA-B*53

We report a novel human leukocyte antigen (HLA)-B allele, HLA-B*5312. Compared with HLA-B*530101, there is one silent substitution at nucleotide 438 and two non-synonymous substitutions at nucleotides 431 and 440, causing a change of the amino acid sequence (Asn-->Ser at codon 77 and Ile-->Thr at codon 80, respectively) within the Bw4 epitope. In contrast to the published sequences (IMGT/HLA Database, version 2.16.0, January 2007), we found that HLA-B*530101 had a C instead of a T at nucleotide -221, whereas HLA-B*350101 had a C instead of an A at nucleotide 2992. According to our sequencing results, HLA-B*5312 resembles HLA-B*350101 regarding its sequence of the untranslated regions. HLA-B*5312 may have been the result of a double crossing over event during which HLA-B*350101 adopted a Bw4 motif.     

HLA-B新等位基因B*9536和B*4612的测序分析和确认

目的 研究人类白细胞抗原(human leukocyte antigen,HLA)新等位基因HLA_B*9536和B*4612的分子机制.方法 采用Invitrogen抽提试剂盒抽提标本DNA,利用单链特异性引物PCR方法扩增样本HLA-B基因第2～4外显子,对PCR产物直接进行HLA-B基因第2、3、4外显子双向测序分析.结果 先证者标本存在2个HLA-B等位基因,经HLA Blast验证均为新的等位基因,新的等位基因序列已递交GenBank(EU081878和EU081879),经世界卫生组织HLA命名委员会正式命名为HLA-B*9536和HLA-B*4612.HLA-B*9536第2～4外显子序列与最接近的B*1505相比,在第3外显子存在一个碱基的不同,即第544位G→A改变,导致第158位氨基酸Ala→Thr;HLA-B*4612第2～4外显子序列与最接近的B*4601相比,在第3外显子存在一个碱基的不同,即第363位G→C,导致第97位氨基酸Arg→Ser.结论 在同一标本中发现两个新的HLA-B等位基因,并被世界卫生组织HLA命名委员会正式命名.     

新等位基因HLA-B*9526的确认和序列分析

目的 鉴定中国人群中人类白细胞抗原(human leukocyte antigen,HLA)新等位基因HLA-B*9526,并进行核苷酸序列分析.方法 使用序列特异性寡核苷酸PCR技术进行HLA基因分型,发现1个反应格局异常的等位基因,应用分子克隆和DNA双向测序技术测定新等位基因的核苷酸序列,并与已知等位基因进行序列比对分析.结果 检出反应格局异常的DNA样本,经过克隆测序得到两个等位基因,分型结果一个为B*5403,另一个的核苷酸序列与已知的HLA等位基因均不同,该基因序列与同源性最高的HLA-B*1507基因序列相比在第3外显子区域中425位碱基发生A→G突变,导致142位编码氨基酸由酪氨酸变成半胱氨酸.结论 一个新的HLA-B等位基因被确认,并被世界卫生组织HLA因子命名委员会正式命名为HLA-B*9526.     

Identification of three novel HLA class I alleles: HLA-B*3928, HLA-B*400104 and HLA-B*4437

Three new human leukocyte antigen (HLA) class I alleles have been identified in the Tissue Typing Laboratory in Sydney, Australia. Sequence analysis of exon 2 and exon 3 of the HLA-B gene revealed the novel polymorphism. A silent substitution of C to T at nucleotide position 369 has been identified for the HLA-B*400104 allele when compared to the closest matched allele, HLA-B*400101. The HLA-B*3928 allele was identified with a nucleotide substitution of G to C at position 362 when compared to the closest matched allele, HLA-B*390101, resulting in an amino acid substitution of Arginine to Threonine. A nucleotide substitution of C to G at position 572 resulting in the amino acid change Serine to Tryptophan was identified in the new allele HLA-B*4437, when compared to the closest matched allele HLA-B*440301. Both amino acid substitutions implicate a different specificity and affinity of antigen binding for the alleles HLA-B*3928 and HLA-B*4437.     

HLA新等位基因B*5618的序列分析

目的识别确认中国汉族人群中的HLA新等位基因。方法采用聚合酶链反应-序列特异性寡核苷酸探针(polymerase chain reaction-sequence specific oligonucleotide probes,PCR-SSOP)方法、聚合酶链反应-序列特异性引物(PCR-sequence specific primer,PCR-SSP)方法以及基因测序分型(sequence-based typing,SBT)技术,发现1个与HLA-B*5610等位基因相近的未知等位基因。以基因特异性引物单独扩增B*56基因并对第2、3、4外显子进行双向测序,序列经BLAST验证并分析该基因与B*5610基因的核苷酸序列差异。结果该基因为新的等位基因,其序列已被GenBank接受(编号为EF016753)。新等位基因与最接近的B*5610相比,在第3外显子上有4个核苷酸的不同,即第379位C→G(密码子127CTG→GTG,氨基酸127Leu→Val);第412位A→G(密码子138AAC→GAC,氨基酸138Asn→Asp);第419位T→C、第420位A→C(密码子140TTA→TCC,氨基酸140Leu→Ser)。结论该等位基因为新的HLA-B等位基因,2006年9月已被世界卫生组织HLA因子命名委员会正式命名为HLA-B*5618。     

序列分析及确认HLA新等位基因B*55:46

背景：近几年来,随着中华骨髓库的建立和人类白细胞抗原分型技术的不断发展和提高,中国人类白细胞抗原新等位基因不断被发现。 目的：探索中国人的人类白细胞抗原新等位基因。 方法：应用PCR-序列特异性寡核苷酸探针基因分型技术,对1名27岁男性汉族造血干细胞志愿捐献者进行HLA基因分型,并应用基于测序的方法分析该基因序列及与最相近等位基因序列的差异。 结果与结论：PCR-序列特异性寡核苷酸探针结果显示该样本HLA-B基因座反应格局出现异常提示;基因测序结果表明其B基因座第3外显子序列与所有已知HLA-B等位基因序列均不一致,在所检测的第2、3外显子中,与序列最相近的等位基因B*55:02:01的差异只是在第3外显子发生了nt 412 A→G一个核苷酸替代,导致第138位密码子由AAC→GAC,相应的编码的天冬酰胺改变为天冬氨酸。将其序列提交国际基因数据库及IMGT/HLA 数据库,证实该HLA等位基因为国际上首次发现,被世界卫生组织织人类白细胞抗原因子命名委员会正式命名为HLA-B*55:46 (HM989018)。     

人类白细胞抗原新等位基因B*07:110的序列分析及确认

背景：近几年来,随着中华骨髓库的建立和人类白细胞抗原分型技术的不断发展和提高,中国人类白细胞抗原新等位基因不断被发现。 目的：采用序列分析确认1例中国人的人类白细胞抗原新等位基因。 方法：应用聚合酶链式反应-序列特异性寡核苷酸探针基因分型技术进行样本的人类白细胞抗原基因分型,并应用基于测序的方法分析该基因序列及与最相近等位基因序列的差异。 结果与结论：聚合酶链式反应-序列特异性寡核苷酸探针结果显示,该样本人类白细胞抗原B基因座反应格局出现异常;基因测序结果表明,其B基因座第2外显子序列与所有已知人类白细胞抗原B等位基因序列均不一致,在所检测的第2、3外显子中,与序列同源性最高的等位基因B*07:01:02的差异是在第2外显子发生了nt 226和nt 228两个A->G核苷酸取代,导致第76位密码子由ATA->GTG,相应的导致氨基酸由异亮氨酸(I)改变为缬氨酸(V)。将其序列提交国际基因数据库(GenBank)及IMGT/HLA数据库,证实该新人类白细胞抗原等位基因为国际上首次发现,被世界卫生组织织人类白细胞抗原因子命名委员会正式命名为人类白细胞抗原B*07:110 (HM989017)。中国组织工程研究杂志出版内容重点：干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程全文链接：