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Arosa FA, Esgalhado AJ, Reste-Ferreira D, Cardoso EM. Open MHC Class I Conformers: A Look through the Looking Glass. Int J Mol Sci 2021; 22:ijms22189738. [PMID: 34575902 PMCID: PMC8470049 DOI: 10.3390/ijms22189738] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/04/2021] [Accepted: 09/08/2021] [Indexed: 12/16/2022] Open
Abstract
Studies carried out during the last few decades have consistently shown that cell surface MHC class I (MHC-I) molecules are endowed with functions unrelated with antigen presentation. These include cis–trans-interactions with inhibitory and activating KIR and LILR, and cis-interactions with receptors for hormones, growth factors, cytokines, and neurotransmitters. The mounting body of evidence indicates that these non-immunological MHC-I functions impact clinical and biomedical settings, including autoimmune responses, tumor escape, transplantation, and neuronal development. Notably, most of these functions appear to rely on the presence in hematopoietic and non-hematopoietic cells of heavy chains not associated with β2m and the peptide at the plasma membrane; these are known as open MHC-I conformers. Nowadays, open conformers are viewed as functional cis-trans structures capable of establishing physical associations with themselves, with other surface receptors, and being shed into the extracellular milieu. We review past and recent developments, strengthening the view that open conformers are multifunctional structures capable of fine-tuning cell signaling, growth, differentiation, and cell communication.
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Affiliation(s)
- Fernando A Arosa
- Health Sciences Research Center (CICS-UBI), University of Beira Interior, 6200-506 Covilhã, Portugal
- Faculty of Health Sciences, University of Beira Interior, 6200-506 Covilhã, Portugal
| | - André J Esgalhado
- Health Sciences Research Center (CICS-UBI), University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Débora Reste-Ferreira
- Health Sciences Research Center (CICS-UBI), University of Beira Interior, 6200-506 Covilhã, Portugal
| | - Elsa M Cardoso
- Health Sciences Research Center (CICS-UBI), University of Beira Interior, 6200-506 Covilhã, Portugal
- Faculty of Health Sciences, University of Beira Interior, 6200-506 Covilhã, Portugal
- Health School, Guarda Polytechnic Institute, 6300-749 Guarda, Portugal
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Luangtrakool P, Vejbaesya S, Luangtrakool K, Ngamhawornwong S, Apisawes K, Kalayanarooj S, Macareo LR, Fernandez S, Jarman RG, Collins RWM, Cox ST, Srikiatkhachorn A, Rothman AL, Stephens HAF. Major Histocompatibility Complex Class I Chain-Related A and B (MICA and MICB) Gene, Allele, and Haplotype Associations With Dengue Infections in Ethnic Thais. J Infect Dis 2020; 222:840-846. [PMID: 32737971 DOI: 10.1093/infdis/jiaa134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 07/30/2020] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Major histocompatibility complex class I chain-related (MIC) A and B (MICA and MICB) are polymorphic stress molecules recognized by natural killer cells. This study was performed to analyze MIC gene profiles in hospitalized Thai children with acute dengue illness. METHODS MIC allele profiles were determined in a discovery cohort of patients with dengue fever or dengue hemorrhagic fever (DHF) (n = 166) and controls (n = 149). A replication cohort of patients with dengue (n = 222) was used to confirm specific MICB associations with disease. RESULTS MICA*045 and MICB*004 associated with susceptibility to DHF in secondary dengue virus (DENV) infections (odds ratio [OR], 3.22; [95% confidence interval (CI), 1.18-8.84] and 1.99 [1.07-2.13], respectively), and MICB*002 with protection from DHF in secondary DENV infections (OR, 0.41; 95% CI, .21-.68). The protective effect of MICB*002 against secondary DHF was confirmed in the replication cohort (OR, 0.43; 95% CI, .22-.82) and was stronger when MICB*002 is present in individuals also carrying HLA-B*18, B*40, and B*44 alleles which form the B44 supertype of functionally related alleles (0.29, 95% CI, .14-.60). CONCLUSIONS Given that MICB*002 is a low expresser of soluble proteins, these data indicate that surface expression of MICB*002 with B44 supertype alleles on DENV-infected cells confer a protective advantage in controlling DENV infection using natural killer cells.
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Affiliation(s)
- Panpimon Luangtrakool
- Department of Transfusion Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sasijit Vejbaesya
- Department of Transfusion Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Komon Luangtrakool
- Department of Transfusion Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Somporn Ngamhawornwong
- Department of Transfusion Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kusuma Apisawes
- Department of Transfusion Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | | | - Louis R Macareo
- Department of Virology, Armed Forces Research Institute of Medical Science, Bangkok, Thailand
| | - Stefan Fernandez
- Department of Virology, Armed Forces Research Institute of Medical Science, Bangkok, Thailand
| | - Richard G Jarman
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | | | - Steven T Cox
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom
| | - Anon Srikiatkhachorn
- Institute for Immunology and Informatics and Department of Cell and Molecular Biology, University of Rhode Island, Providence, Rhode Island, USA.,Faculty of Medicine, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Alan L Rothman
- Institute for Immunology and Informatics and Department of Cell and Molecular Biology, University of Rhode Island, Providence, Rhode Island, USA
| | - Henry A F Stephens
- Department of Transfusion Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.,UCL Department of Renal Medicine and Anthony Nolan Laboratories, Royal Free NHS Foundation Trust, Royal Free Hospital, London, United Kingdom
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Han W, Zhang X, Jia Z, He J, Chao H, Yang J, Xiao R, Lu X. [Study of NK cells dysfunction in multiple myeloma patients]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2015; 36:922-5. [PMID: 26632464 PMCID: PMC7342427 DOI: 10.3760/cma.j.issn.0253-2727.2015.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To explore the mechanism of NK cell dysfunction in patients with multiple myeloma (MM). METHODS The expression of inhibitory receptors (CD158a and CD158b) and activating receptors NKG2D and NCRs (NKp30, NKp44 and NKp46) on CD3-CD56+NK cell of 13 MM patients and 30 healthy controls were analyzed by flow cytometry. The concentration of soluble NKG2D ligands (MICA, MICB, ULBP1, ULBP2 and ULBP3) in serum was detected by enzyme- linked immunosorbent assay (ELISA), and the cytotoxicity of NK cell against MM cell line by flow cytometry. RESULTS There are no significant differences of percentage and absolute number of NK cells, and the expression level of CD158a and CD158b between MM patients and healthy individuals (P>0.05). No NKp44 expression was detected on fresh isolated NK cells from both groups. There is no difference in inhibitor receptors expression between MM patients and healthy individuals but the expression of NKG2D, NKp30 and NKp46 on NK cells were higher in MM patients as compared with that in healthy individuals. The concentration of soluble NKG2D ligands in serum was higher in MM patients as compared with that in healthy individuals (P<0.05). Cultured healthy individual's NK cells with MM patient's serum could significantly decrease its cytotoxicity against MM cell line U266 cells [(38.5 ± 6.5) % vs (25.4 ± 5.9)%, P=0.044]. CONCLUSION The higher level of soluble NKG2D ligands in serum may be the mechanism of NK cell dysfunction in MM patient.
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Affiliation(s)
- Wenmin Han
- Department of Hematology, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
| | - Xiuwen Zhang
- Department of Hematology, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
| | - Zhuxia Jia
- Department of Hematology, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
| | - Jinyuan He
- Department of Hematology, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
| | - Hongying Chao
- Department of Hematology, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
| | - Jianhe Yang
- Department of Hematology, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
| | - Rong Xiao
- Department of Hematology, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
| | - Xuzhang Lu
- Department of Hematology, Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
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