HLA-DQ5

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HLA-DQ5
DQ Illustration.PNG
Illustration of HLA-DQ with gliadin peptide in the binding pocket.
Polymer type MHC Class II, DQ cell surface antigen
Cis-haplotypeHaplotype
isoformsubtype DQA1 DQB1
DQ α1.1β5.1 DQ5.1 *0101 *0501
DQ α1.2β5.2DQ5.2 *0102 *0502
DQ α1.4β5.3 DQ5.3 *0104 *0503

HLA-DQ5 (DQ5) is a human leukocyte antigen serotype subgroup within HLA-DQ(DQ) serotypes. The serotype is determined by the antibody recognition of β5.x subset of DQ β-chains. The β-chain of DQ is encoded by HLA-DQB1 locus and DQ5 are encoded by the HLA-DQB1*05 allele group. This group currently contains 4 common alleles, DQB1*0501, *0502, *0503, and *0504. HLA-DQ5 and HLA-DQB1*05 are almost synonymous in meaning. DQ5 β-chains combine with α-chains, encoded by genetically linked HLA-DQA1 alleles, to form the cis-haplotype isoforms. These isoforms, are all HLA-DQ1 encoded by the DQA1*01 allele group.

Contents

Serology

DQ5, DQ1, and DQ6 recognition
of some DQB1* alleles [1]
DQB1*DQ5DQ1DQ6Sample
allele % % %size (N)
*0501 692025536
*0502 482415919
*0503 582241327
*0504 5917248
Red indicates the level of 'false' reaction in non-DQ5 serotypes

The efficiency of DQ1 recognition relative to DQ5 and DQ6 is listed above. Since DQ1 recognizes alpha, the DQ5 and DQ6 recognition are to beta chain. Meaning that DQ1 is corecognized with DQ5 and DQ6. Efficient recognition of a genotyped allele approaches 100%. Compared to DQ2 serotyping of DQB1*0201 positive individuals (98%), the efficiency of DQ5 recognition is relatively low and error prone.

While DQ5 recognizes DQB1*05 alleles more efficiently than DQ1, the serotyping is rather poor method of typing for transplantation or disease association prediction or study.

Disease associations

By serotype

DQ5 is negatively associated with (protective against) idiopathic nephrotic syndrome in Polish children, [2] and adrenocortical failure (Addison's disease). [3]

A study on the relationship between HLA-DR, DQ antigen, and intracranial aneurysm in the Han nationality show DQ5 more likely, [4] AIDP type of Guillain Barré syndrome, [5] and irritable bowel disease [6] but not crohn's disease in the same (Jewish) population. Other studies show DQ5 is associated with extra-intestinal manifestations of Crohn's. [7]

DQ5 is shown to be associated with increased risk of gastric mucosal atrophy in Helicobacter pylori infected subjects. [8]

DQ5 appears to be associated with analgesic intolerance. [9]

By haplotype

MuSK antibody-positive myasthenia gravis HLA-DR14-DQ5, [10] probably DRB1*1402 : DQA1*0104 : DQB1*0503 (DR14-DQ5). DR1-DQ5 is associated with sensitivity to acid anhydrides. [11]

Related Research Articles

<span class="mw-page-title-main">Human leukocyte antigen</span> Genes on human chromosome 6

The human leukocyte antigen (HLA) system or complex is a complex of genes on chromosome 6 in humans which encode cell-surface proteins responsible for regulation of the immune system. The HLA system is also known as the human version of the major histocompatibility complex (MHC) found in many animals.

<span class="mw-page-title-main">HLA-DR</span> Subclass of HLA-D antigens that consist of alpha and beta chains

HLA-DR is an MHC class II cell surface receptor encoded by the human leukocyte antigen complex on chromosome 6 region 6p21.31. The complex of HLA-DR and peptide, generally between 9 and 30 amino acids in length, constitutes a ligand for the T-cell receptor (TCR). HLA were originally defined as cell surface antigens that mediate graft-versus-host disease. Identification of these antigens has led to greater success and longevity in organ transplant.

<span class="mw-page-title-main">HLA-DQ</span> Cell surface receptor protein found on antigen-presenting cells.

HLA-DQ (DQ) is a cell surface receptor protein found on antigen-presenting cells. It is an αβ heterodimer of type MHC class II. The α and β chains are encoded by two loci, HLA-DQA1 and HLA-DQB1, that are adjacent to each other on chromosome band 6p21.3. Both α-chain and β-chain vary greatly. A person often produces two α-chain and two β-chain variants and thus 4 isoforms of DQ. The DQ loci are in close genetic linkage to HLA-DR, and less closely linked to HLA-DP, HLA-A, HLA-B and HLA-C.

<span class="mw-page-title-main">HLA-DQ8</span>

HLA-DQ8 (DQ8) is a human leukocyte antigen serotype within the HLA-DQ (DQ) serotype group. DQ8 is a split antigen of the DQ3 broad antigen. DQ8 is determined by the antibody recognition of β8 and this generally detects the gene product of DQB1*0302.

<span class="mw-page-title-main">HLA-DQ2</span>

HLA-DQ2 (DQ2) is a serotype group within HLA-DQ (DQ) serotyping system. The serotype is determined by the antibody recognition of β2 subset of DQ β-chains. The β-chain of DQ is encoded by HLA-DQB1 locus and DQ2 are encoded by the HLA-DQB1*02 allele group. This group currently contains two common alleles, DQB1*0201 and DQB1*0202. HLA-DQ2 and HLA-DQB1*02 are almost synonymous in meaning. DQ2 β-chains combine with α-chains, encoded by genetically linked HLA-DQA1 alleles, to form the cis-haplotype isoforms. These isoforms, nicknamed DQ2.2 and DQ2.5, are also encoded by the DQA1*0201 and DQA1*0501 genes, respectively.

<span class="mw-page-title-main">HLA-DQ4</span>

HLA-DQ4 (DQ4) is a serotype subgroup within HLA-DQ(DQ) serotypes. The serotype is determined by the antibody recognition of β4 subset of DQ β-chains. The β-chain of DQ is encoded by HLA-DQB1 locus and DQ4 are encoded by the HLA-DQB1*04 allele group. This group currently contains 2 common alleles, DQB1*0401 and DQB1*0402. HLA-DQ4 and HLA-DQB1*04 are almost synonymous in meaning. DQ4 β-chains combine with α-chains, encoded by genetically linked HLA-DQA1 alleles, to form the cis-haplotype isoforms. These isoforms, nicknamed DQ4.3 and DQ4.4, are also encoded by the DQA1*0303 and DQA1*0401 genes, respectively.

<span class="mw-page-title-main">HLA-DQ6</span>

HLA-DQ6 (DQ6) is a human leukocyte antigen serotype within HLA-DQ (DQ) serotype group. The serotype is determined by the antibody recognition of β6 subset of DQ β-chains. The β-chain of DQ isoforms are encoded by HLA-DQB1 locus and DQ6 are encoded by the HLA-DQB1*06 allele group. This group currently contains many common alleles, DQB1*0602 is the most common. HLA-DQ6 and DQB1*06 are almost synonymous in meaning. DQ6 β-chains combine with α-chains, encoded by genetically linked HLA-DQA1 alleles, to form the cis-haplotype isoforms. For DQ6, however, cis-isoform pairing only occurs with DQ1 α-chains. There are many haplotypes of DQ6.

<span class="mw-page-title-main">HLA-DQ9</span>

HLA-DQ9 (DQ9) is a human leukocyte antigen serotype within the HLA-DQ (DQ) serotype group. DQ9 is a split antigen of the DQ3 broad antigen. DQ9 is determined by the antibody recognition of β9 and this generally detects the gene product of DQB1*0303.

<span class="mw-page-title-main">HLA-DQ7</span>

HLA-DQ7 (DQ7) is an HLA-DQ serotype that recognizes the common HLA DQB1*0301 and the less common HLA DQB1*0304 gene products. DQ7 is a form of 'split antigen' of the broad antigen group DQ3 which also contains DQ8 and DQ9.

<span class="mw-page-title-main">HLA-DQ1</span> Serotype that covers a broad range of HLA-DQ haplotypes.

HLA-DQ1 is a serotype that covers a broad range of HLA-DQ haplotypes. Historically it was identified as a DR-like alpha chain called DC1; later, it was among 3 types DQw1, DQw2 and DQw3. Of these three serotyping specificities only DQw1 recognized DQ alpha chain. The serotype is positive in individuals who bear the DQA1*01 alleles. The most frequently found within this group are: DQA1*0101, *0102, *0103, and *0104. In the illustration on the right, DQ1 serotyping antibodies recognizes the DQ α (magenta), where antibodies to DQA1* gene products bind variable regions close to the peptide binding pocket.

<span class="mw-page-title-main">HLA-DR52</span>

HLA-DR52 is an HLA-DR serotype that recognizes gene products of HLA-DRB3 locus. Three allele groups can produce 35 isoforms.

<span class="mw-page-title-main">HLA-DR17</span>

HLA-DR17 (DR17) is an HLA-DR serotype that recognizes the DRB1*0301 and *0304 gene products. DR17 is found at high frequency in Western Europe. DR17 is part of the broader antigen group HLA-DR3 and is very similar to the group HLA-DR18.

<span class="mw-page-title-main">HLA-DR16</span>

HLA-DR16(DR16) is a HLA-DR serotype that recognizes the DRB1*1601, *1602 and *1604 gene products. DR16 is found in the Mediterranean at modest frequencies. DR16 is part of the older HLA-DR2 serotype group which also contains the similar HLA-DR15 antigens.

<span class="mw-page-title-main">HLA-DR15</span>

HLA-DR15 (DR15) is a HLA-DR serotype that recognizes the DRB1*1501 to *1505 and *1507 gene products. DR15 is found at high levels from Ireland to Central Asia. DR15 is part of the older HLA-DR2 serotype group which also contains the similar HLA-DR16 antigens.

<span class="mw-page-title-main">HLA-DR13</span>

HLA-DR13(DR13) is a HLA-DR serotype that recognizes the DRB1*1301 to *13082, *1310 and some other *13 gene products. DR13 serotype is a split antigen of the older HLA-DR6 serotype group which also contains the similar HLA-DR14 antigens.

<span class="mw-page-title-main">HLA-DR14</span>

HLA-DR14(DR14) is a HLA-DR serotype that recognizes the DRB1*1401 to *1408, *1410 to *1418, and other *14 gene products. DR14 serotype is a split antigen of the older HLA-DR6 serotype group which also contains the similar HLA-DR13 antigens.

<span class="mw-page-title-main">HLA-DR3</span>

HLA-DR3 is composed of the HLA-DR17 and HLA-DR18 split 'antigens' serotypes. DR3 is a component gene-allele of the AH8.1 haplotype in Northern and Western Europeans. Genes between B8 and DR3 on this haplotype are frequently associated with autoimmune disease. Type 1 diabetes mellitus is associated with HLA-DR3 or HLA-DR4. Nearly half the US population has either DR3 or DR4, yet only a small percentage of these individuals will develop type 1 diabetes.

<span class="mw-page-title-main">HLA-A3</span>

HLA-A3 (A3) is a human leukocyte antigen serotype within HLA-A serotype group. The serotype is determined by the antibody recognition of α3 subset of HLA-A α-chains. For A3, the alpha, "A", chain are encoded by the HLA-A*03 allele group and the β-chain are encoded by B2M locus. This group currently is dominated by A*03:01. A3 and A*03 are almost synonymous in meaning. A3 is more common in Europe, it is part of the longest known multigene haplotype, A3~B7~DR15~DQ6.

<span class="mw-page-title-main">Major histocompatibility complex, class II, DQ alpha 1</span> Protein-coding gene in the species Homo sapiens

Major histocompatibility complex, class II, DQ alpha 1, also known as HLA-DQA1, is a human gene present on short arm of chromosome 6 (6p21.3) and also denotes the genetic locus which contains this gene. The protein encoded by this gene is one of two proteins that are required to form the DQ heterodimer, a cell surface receptor essential to the function of the immune system.

HLA B7-DR15-DQ6 is a multigene haplotype that covers a majority of the human major histocompatibility complex on chromosome 6. A multigene haplotype is set of inherited alleles covering several genes, or gene-alleles, common multigene haplotypes are generally the result of descent by common ancestry. Chromosomal recombination fragments multigene haplotypes as the distance to that ancestor increases in number of generations.

References

  1. derived from IMGT/HLA
  2. Krasowska-Kwiecień A, Sancewicz-Pach K, Moczulska A (2006). "Idiopathic nephrotic syndrome in Polish children - its variants and associations with HLA". Pediatr. Nephrol. 21 (12): 1837–46. doi:10.1007/s00467-006-0271-7. PMID   16967287. S2CID   23739129.
  3. Myhre AG, Undlien DE, Løvås K, et al. (2002). "Autoimmune adrenocortical failure in Norway autoantibodies and human leukocyte antigen class II associations related to clinical features". J. Clin. Endocrinol. Metab. 87 (2): 618–23. doi: 10.1210/jc.87.2.618 . PMID   11836294.
  4. Wang JF, Zhang D, Zhao JZ, Jia BX, Bi RM (2006). "A study on the relationship between HLA-DR, DQ antigen, and intracranial aneurysm in the Han nationality". Surgical Neurology. 66 Suppl 1: S25–8, discussion S28–9. doi:10.1016/j.surneu.2006.06.048. PMID   16904993.
  5. Guo L, Wang W, Li C, Liu R, Wang G (2002). "[The association between HLA typing and different subtypes of Guillain Barré syndrome]". Zhonghua Nei Ke Za Zhi (in Chinese). 41 (6): 381–3. PMID   12137599.
  6. Trachtenberg EA, Yang H, Hayes E, et al. (2000). "HLA class II haplotype associations with inflammatory bowel disease in Jewish (Ashkenazi) and non-Jewish caucasian populations". Hum. Immunol. 61 (3): 326–33. doi:10.1016/S0198-8859(99)00134-2. PMC   4524574 . PMID   10689124.
  7. Hesresbach D, Alizadeh M, Bretagne JF, et al. (1996). "Investigation of the association of major histocompatibility complex genes, including HLA class I, class II and TAP genes, with clinical forms of Crohn's disease". Eur. J. Immunogenet. 23 (2): 141–51. doi:10.1111/j.1744-313X.1996.tb00275.x. PMID   8732477. S2CID   32885468.
  8. Beales IL, Davey NJ, Pusey CD, Lechler RI, Calam J (1995). "Long-term sequelae of Helicobacter pylori gastritis". Lancet. 346 (8971): 381–2. doi:10.1016/s0140-6736(95)92263-6. PMID   7623555.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  9. Kalyoncu AF, Karakaya G, Yilmaz E, Balci B, Karaduman A, Yasavul U (2003). "Analgesic intolerance with or without bronchial asthma: is there a marker?". Journal of Investigational Allergology and Clinical Immunology. 13 (3): 162–9. PMID   14635465.
  10. Niks EH, Kuks JB, Roep BO, et al. (2006). "Strong association of MuSK antibody-positive myasthenia gravis and HLA-DR14-DQ5". Neurology. 66 (11): 1772–4. doi:10.1212/01.wnl.0000218159.79769.5c. PMID   16769963. S2CID   41206495.
  11. Jones MG, Nielsen J, Welch J, et al. (2004). "Association of HLA-DQ5 and HLA-DR1 with sensitization to organic acid anhydrides". Clin. Exp. Allergy. 34 (5): 812–6. doi:10.1111/j.1365-2222.2004.1956.x. PMID   15144476. S2CID   7864063.