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Stieglitz F, Celik AA, von Kaisenberg C, Camps MA, Blasczyk R, Bade-Döding C. The microstructure in the placenta is influenced by the functional diversity of HLA-G allelic variants. Immunogenetics 2019; 71:455-463. [PMID: 31250049 PMCID: PMC6647172 DOI: 10.1007/s00251-019-01121-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/31/2019] [Indexed: 11/29/2022]
Abstract
The main expression sites of HLA-G are human extravillous trophoblast cells. The interaction of HLA-G with uterine NK cells promotes their maturation and differentiation into decidual NK (dNK) cells. dNK cells secrete chemokines, cytokines, and proangiogenic factors in favor of a vascular remodeling and an immune suppressive microenvironment of the decidua. HLA-G is the most polymorphic member of the oligomorphic non-classical HLA molecule family; yet, the impact of polymorphic differences is not comprehensively understood. sHLA-G levels in embryo culture medium correlate with successful pregnancy; however, it remains questionable if HLA-G allelic diversity impacts on the outcome of dNK cell development. We utilized synthetic sHLA-G*01:01, 01:03, and 01:04 molecules and transduced K652/mHLA-G*01:01, 01:03, and 01:04 cells to study the biological interaction between HLA-G alleles and primary NK cells of human term placenta. Despite its low frequency, HLA-G*01:04 and not the most prevalent allele HLA-G*01:01 appear to be strong catalysts of dNK cell proliferation. Concluding, this study illustrates novel insights into the impact and binding efficiency of the three most common variants of HLA-G on primary placental NK cells.
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Affiliation(s)
- F Stieglitz
- Hannover Medical School, Institute for Transfusion Medicine, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - A A Celik
- Hannover Medical School, Institute for Transfusion Medicine, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - C von Kaisenberg
- Department of Obstetrics and Gynecology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - M A Camps
- Imusyn GmbH & Co. KG, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - R Blasczyk
- Hannover Medical School, Institute for Transfusion Medicine, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Christina Bade-Döding
- Hannover Medical School, Institute for Transfusion Medicine, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
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Celik AA, Simper GS, Huyton T, Blasczyk R, Bade-Döding C. HLA-G mediated immune regulation is impaired by a single amino acid exchange in the alpha 2 domain. Hum Immunol 2018; 79:453-462. [DOI: 10.1016/j.humimm.2018.03.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/09/2018] [Accepted: 03/27/2018] [Indexed: 01/04/2023]
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Wagner B, da Silva Nardi F, Schramm S, Kraemer T, Celik AA, Dürig J, Horn PA, Dührsen U, Nückel H, Rebmann V. HLA-E allelic genotype correlates with HLA-E plasma levels and predicts early progression in chronic lymphocytic leukemia. Cancer 2017; 123:814-823. [PMID: 27859015 DOI: 10.1002/cncr.30427] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/05/2016] [Accepted: 10/03/2016] [Indexed: 01/31/2023]
Abstract
BACKGROUND Human leukocyte antigen-E (HLA-E) is a nonclassical major histocompatibility complex class I molecule that recently came into sharper focus as a putative marker of advanced tumor stages and disease progression. In solid tumors, increased HLA-E expression as well as elevated soluble HLA-E (sHLA-E) plasma levels are associated with a poor prognosis; however, a role for HLA-E in hematologic malignancies remains to be established. METHODS The authors analyzed HLA-E alleles and sHLA-E levels in a cohort of 110 individuals with chronic lymphocytic leukemia (CLL). RESULTS In patients with CLL, levels of sHLA-E increased with advanced disease stage (P = .01) and decreased after therapy (P = .01). Longitudinal follow-up revealed that both HLA-E*01:03 alleles and high levels of sHLA-E were significantly associated with a requirement for early treatment in patients with CLL (P = .027 and P = .023, respectively). In vitro, sHLA-E inhibited degranulation and interferon-γ production by natural killer (NK) cells when cocultivated with tumor cells. Moreover, sHLA-E loaded onto microspheres induced transforming growth factor-β release by NK cells. Multivariate analysis revealed that the presence of at least 1 HLA-E*01:03 allele was an independent predictor of a requirement for early treatment. CONCLUSIONS HLA-E alleles and sHLA-E levels may represent novel biomarkers for early disease progression in patients with CLL. Cancer 2017;123:814-23. © 2016 American Cancer Society.
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MESH Headings
- Aged
- Alleles
- Biomarkers, Tumor/blood
- Disease Progression
- Female
- Genotype
- Histocompatibility Antigens Class I/blood
- Histocompatibility Antigens Class I/genetics
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Leukocytes/pathology
- Male
- Middle Aged
- Prognosis
- HLA-E Antigens
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Affiliation(s)
- Bettina Wagner
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Fabiola da Silva Nardi
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
- Coordinaton for the Improvement of Higher Education Personnel (CAPES) Foundation, Ministry of Education of Brazil, Brasilia, Brazil
| | - Sabine Schramm
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Thomas Kraemer
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Alexander A Celik
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Jan Dürig
- Department of Hematology, University Hospital Essen, Essen, Germany
| | - Peter A Horn
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
| | - Ulrich Dührsen
- Department of Hematology, University Hospital Essen, Essen, Germany
| | - Holger Nückel
- Department of Hematology, University Hospital Essen, Essen, Germany
| | - Vera Rebmann
- Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany
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Kunze-Schumacher H, Beth L, Celik AA, Huyton T, Blasczyk R, Bade-Doeding C. OR11 HLA linked pharmacogenomics: Carbamazepine alteration of the HLA-A ∗ 31:01 peptide binding groove. Hum Immunol 2016. [DOI: 10.1016/j.humimm.2016.07.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Manandhar T, Kunze-Schumacher H, Huyton T, Celik AA, Blasczyk R, Bade-Doeding C. Understanding the obstacle of incompatibility at residue 156 within HLA-B*35 subtypes. Immunogenetics 2016; 68:247-60. [PMID: 26758079 PMCID: PMC4799800 DOI: 10.1007/s00251-015-0896-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 12/23/2015] [Indexed: 01/22/2023]
Abstract
Defining permissive and non-permissive mismatches for transplantation is a demanding challenge. Single mismatches at amino acid (AA) position 156 of human leucocyte antigen (HLA) class I have been described to alter the peptide motif, repertoire, or mode of peptide loading through differential interaction with the peptide-loading complex. Hence, a single mismatch can tip the balance and trigger an immunological reaction. HLA-B*35 subtypes have been described to evade the loading complex, 156 mismatch distinguishing B*35:01 and B*35:08 changes the binding groove sufficiently to alter the sequence features of the selected peptide repertoire. To understand the functional influences of residue 156 in B*35 variants, we analyzed the peptide binding profiles of HLA-B*35:01156Leu, B*35:08156Arg and B*35:62156Trp. The glycoprotein tapasin represents a target for immune evasions and functions within the multimeric peptide-loading complex to stabilize empty class I molecules and promote acquisition of high-affinity peptides. All three B*35 subtypes showed a tapasin-independent mode of peptide acquisition. HLA-B*35-restricted peptides of low- and high-binding affinities were recovered in the presence and absence of tapasin and subsequently sequenced utilizing mass spectrometry. The peptides derived from B*35 variants differ substantially in their features dependent on their mode of recruitment; all peptides were preferentially anchored by Pro at p2 and Tyr, Phe, Leu, or Lys at pΩ. However, the Trp at residue 156 altered the p2 motif to an Ala and restricted the pΩ to a Trp. Our results highlight the importance of understanding the impact of key micropolymorphism and how a single AA mismatch orchestrates the neighboring AAs.
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Affiliation(s)
- Trishna Manandhar
- Hannover Medical School, Institute for Transfusion Medicine, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Heike Kunze-Schumacher
- Hannover Medical School, Institute for Transfusion Medicine, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Trevor Huyton
- Hannover Medical School, Institute for Transfusion Medicine, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Alexander A Celik
- Hannover Medical School, Institute for Transfusion Medicine, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Rainer Blasczyk
- Hannover Medical School, Institute for Transfusion Medicine, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Christina Bade-Doeding
- Hannover Medical School, Institute for Transfusion Medicine, Feodor-Lynen-Str. 5, 30625, Hannover, Germany.
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Celik AA, Kraemer T, Huyton T, Blasczyk R, Bade-Döding C. The diversity of the HLA-E-restricted peptide repertoire explains the immunological impact of the Arg107Gly mismatch. Immunogenetics 2016; 68:29-41. [PMID: 26552660 PMCID: PMC4701785 DOI: 10.1007/s00251-015-0880-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 10/29/2015] [Indexed: 12/21/2022]
Abstract
Human leukocyte antigen (HLA)-E molecules are potent inhibitors of NK cell-mediated killing. Low in polymorphisms, two alleles are widely expressed among diverse populations: HLA-E*01:01 and HLA-E*01:03. Both alleles are distinguished by one SNP resulting in the substitution Arg107Gly. Both alleles present a limited set of peptides derived from class I leader sequences physiologically; however, HLA-E*01:01 presents non-canonical peptides in the absence of HLA class I molecules. To further assess the functional differences between both alleles, we analyzed the peptide repertoire of HLA-E*01:03 by applying soluble HLA technology followed by mass-spectrometric peptide sequencing. HLA-E*01:03 restricted peptides showed a length of 9-17 amino acids and differed in their biophysical properties, no overlap in the peptide repertoire of both allelic variants could be observed; however, both alleles shared marginal peptides from the same proteomic content. Artificial APCs expressing empty HLA-E*01:01 or E*01:03 molecules were generated and stabilized using cognate HLA class I-derived peptide ligands to analyze the impact of residue 107 within the HLA-E heavy chain on the NKG2/CD94 receptor engagement. Differences in peptide stabilization could be translated to the density and half-life time of peptide-HLA-E molecules on the cell surface that subsequently impacted NK cell inhibition as verified by cytotoxicity assays. Taken together, these data illustrate functional differences of HLA-E allelic variants induced by a single amino acid. Furthermore, the function of HLA-E in pathophysiologic situations when the HLA processing machinery is interrupted seems to be more emphasized than previously described, implying a crucial role for HLA-E in tumor or viral immune episodes.
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Affiliation(s)
- Alexander A Celik
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Thomas Kraemer
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Trevor Huyton
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Rainer Blasczyk
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany
| | - Christina Bade-Döding
- Institute for Transfusion Medicine, Hannover Medical School, Medical Park, Feodor-Lynen-Str. 5, 30625, Hannover, Germany.
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Celik AA, Kraemer T, Huyton T, Blasczyk R, Bade-Doeding C. The ARG107GLY mismatch impacts the CD94/NKG2A/2C balance: Implications for HLA-E matching? Hum Immunol 2015. [DOI: 10.1016/j.humimm.2015.07.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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