1
|
Bora M, Singha S, Madan T, Deka G, Hazarika SG, Baruah S. HLA-G isoforms, HLA-C allotype and their expressions differ between early abortus and placenta in relation to spontaneous abortions. Placenta 2024; 149:44-53. [PMID: 38492472 DOI: 10.1016/j.placenta.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/28/2024] [Accepted: 02/21/2024] [Indexed: 03/18/2024]
Abstract
INTRODUCTION Spontaneous abortion (SAB) affects approximately 10% of clinically recognized pregnancies. Fetal trophobalst invasion and remodeling of maternal spiral arteries is reported to be dependent on crosstalk between HLA-C/HLA-G expressed on extra villous trophoblast (EVTs)and Killer cell Immunoglobin like receptors (KIRs) of decidual NK (dNK). Immune dysfunction in decidua contributes to early miscarriage. METHODOLOGY The study used mother neonate paired cord blood and term placenta samples (n = 46), elective abortus (n = 17,gestational age = 10-12 weeks of pregnancy) and SAB abortus (n = 24, gestational age = 12-15 weeks of pregnancy) for HLA-G, KIR2D and HLA-C. In addition, term placenta was collected from women with history of spontaneous pregnancy loss (n = 24) and women with history of live birth (n = 32). SSP-PCR was used for genotyping, RT-PCR for gene expression, copy number variation (CNVs) and HLA-C allotyping and ELISA for protein expression studies. RESULTS Membrane bound HLA-G4 isoform proportion was higher 39.28%, p = 0.02) in term placenta. SAB abortus had higher proportion of HLA-G3 (50%),while elective abortus exhibited higher proportion of soluble isoforms (HLA-G5, = 5.9, HLA-G6 = 5.9%, HLA-G7 = 11.8%). Higher inhibitory KIR2DL1 content and copy numbers with lower HLA-C2 in SAB contrasted with higher copy numbers of KIR2DS1(p = 0.001), KIR2DS1+/2DL1+- HLA-C2 combined genotype in healthy placenta. Elevated KIR2D protein levels (p = 0.001), and concurrently, HLA-C levels were upregulated in healthy placenta. CONCLUSION Our data supports lower cognate receptor ligand KIR2DS1+/2DL1+ HLA-C2 together with predominance of HLA-G3 isoform in SAB as confounding factors in spontaneous pregnancy loss. HLA-G isoforms and expression differed between first trimester abortus and term placenta suggesting temporal modulation and marks novelty of the study.
Collapse
Affiliation(s)
- Mayuri Bora
- Department of Molecular Biology and Biotechnology Tezpur University, Napaam, Sonitpur, Assam, 784028, India.
| | - Sushmita Singha
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, 784028, Assam, India.
| | - Taruna Madan
- National Institute for Research in Reproductive and Child Health, Department of Innate Immunity, Mumbai, 400012, India.
| | - Gitanjali Deka
- Tezpur Medical College and Hospital, Bihaguri, Tezpur, 784010, Assam, India.
| | | | - Shashi Baruah
- Department of Molecular Biology and Biotechnology Tezpur University, Napaam, Sonitpur, Assam, 784028, India.
| |
Collapse
|
2
|
Choi EJ, Baek IC, Park S, Kim HJ, Kim TG. Development of cost-effective and fast KIR genotyping by multiplex PCR-SSP. HLA 2024; 103:e15191. [PMID: 37688498 DOI: 10.1111/tan.15191] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 07/24/2023] [Accepted: 08/01/2023] [Indexed: 09/11/2023]
Abstract
Killer-cell immunoglobulin-like receptors (KIR) control natural killer (NK) cell functions by recognizing HLA molecules and modulating the activity of NK cells. The KIR gene cluster contains polymorphic and highly homologous genes. Diversity of the KIR region is achieved through differences in gene content, allelic polymorphism, and gene copy number, which result in unrelated individuals having different KIR genotypes and individualized immune responses that are relevant to multiple aspects of human health and disease. Therefore, KIR genotyping is increasingly used in epidemiological studies. Here, we developed multiplex polymerase chain reaction with sequence-specific primers (PCR-SSP) to compensate for the shortcomings of the conventional PCR-SSP method, which is most commonly used for KIR analysis. Multiplex PCR-SSP method involves six multiplex reactions that detect 16 KIR genes and distinguish variant types of some KIR genes by adding two reactions. The assay was evaluated in a blind survey using a panel of 40 reference DNA standards from the UCLA KIR Exchange Program. The results are 100% concordant with the genotype determined using Luminex-based reverse sequence-specific oligonucleotide typing systems. Additionally, we investigated the currently known 16 KIR genes and their common variants in 120 unrelated Korean individuals. The results were consistent with the KIR genotype previously reported by Hwang et al. This multiplex PCR-SSP is an efficient method for analyzing KIR genotypes in both small- and large-scale studies with minimal labor, reagents, and DNA. Furthermore, by providing a better definition of KIR polymorphisms it can contribute to developments in immunogenetics.
Collapse
Affiliation(s)
- Eun-Jeong Choi
- Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In-Cheol Baek
- Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Silvia Park
- Department of Internal Medicine, Catholic Blood and Marrow Transplantation Center, Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hee-Je Kim
- Department of Internal Medicine, Catholic Blood and Marrow Transplantation Center, Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Tai-Gyu Kim
- Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| |
Collapse
|
3
|
Tordai A, Bors A, Kiss KP, Balassa K, Andrikovics H, Batai A, Szilvasi A, Rajczy K, Inotai D, Torbagyi E, Lengyel L, Barta A, Remenyi P, Masszi T. Donor KIR2DS1 reduces the risk of transplant related mortality in HLA-C2 positive young recipients with hematological malignancies treated by myeloablative conditioning. PLoS One 2019; 14:e0218945. [PMID: 31237928 PMCID: PMC6592561 DOI: 10.1371/journal.pone.0218945] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 06/12/2019] [Indexed: 01/12/2023] Open
Abstract
Background Recognition of HLA-C2 group alleles on recipient cells by activating killer immunoglobulin like receptors, KIR2DS1 on donor natural killer cells may lead to increased graft-versus-leukemia effect or immunomodulation in patients treated by allogeneic hematopoietic stem cell transplantation (allo-HSCT) influencing disease free and overall survival (OS). Objective In the present study, 314 consecutive, allo-HSCT recipient and donor pairs were included with retrospective donor KIR-genotyping and clinical parameters analyzes. Results After a median follow-up of 23.6 months, recipients with HLA-C2 group allele (rC2) showed improved (p = 0.046) OS if transplanted with KIR2DS1 positive donors (d2DS1) compared to those without one or both of this genetic attribute. Within the myeloablative conditioning (MAC) subgroup (n = 227), rC2 homozygous+d2DS1 patients (n = 14) showed a 5 years OS of 93% followed by rC2 heterozygous+d2DS1 patients (n = 48, 65%) compared to rC2 and/or d2DS1 negatives (47%, p = 0.018). Multivariate analyses indicated rC2+d2DS1 positivity as an independent predictor of OS (HR:0.47, 0.26–0.86, p = 0.014) besides donor type, presence of CMV-reactivation or chemoresistant disease. Among MAC-treated patients, the combined rC2+d2DS1 presence was associated with a markedly decreased cumulative incidence of transplant related mortality (p = 0.0045). Conclusion The combination of rC2+d2DS1 may be a favorable genetic constellation in allo-HSCT with MAC potentially reducing transplant related mortality.
Collapse
Affiliation(s)
- Attila Tordai
- Laboratory of Molecular Diagnostics, Hungarian National Blood Transfusion Service, Budapest, Hungary
- Department of Pathophysiology, Semmelweis University, Budapest, Hungary
- * E-mail:
| | - Andras Bors
- Laboratory of Molecular Diagnostics, South-Pest Central Hospital–National Institute of Haematology and Infectology, Budapest, Hungary
| | - Katalin Piroska Kiss
- Laboratory of Molecular Diagnostics, Hungarian National Blood Transfusion Service, Budapest, Hungary
| | - Katalin Balassa
- Laboratory of Molecular Diagnostics, Hungarian National Blood Transfusion Service, Budapest, Hungary
| | - Hajnalka Andrikovics
- Laboratory of Molecular Diagnostics, Hungarian National Blood Transfusion Service, Budapest, Hungary
- Laboratory of Molecular Diagnostics, South-Pest Central Hospital–National Institute of Haematology and Infectology, Budapest, Hungary
| | - Arpad Batai
- Department of Haematology and Stem Cell Transplantation, South-Pest Central Hospital–National Institute of Haematology and Infectology, Budapest, Hungary
| | - Aniko Szilvasi
- Transplantation Immunogenetics Laboratory, Hungarian National Blood Transfusion Service, Budapest, Hungary
| | - Katalin Rajczy
- Hungarian Stem Cell Donor Registry, Hungarian National Blood Transfusion Service, Budapest, Hungary
| | - Dora Inotai
- Transplantation Immunogenetics Laboratory, Hungarian National Blood Transfusion Service, Budapest, Hungary
| | - Eva Torbagyi
- Department of Haematology and Stem Cell Transplantation, South-Pest Central Hospital–National Institute of Haematology and Infectology, Budapest, Hungary
| | - Lilla Lengyel
- Department of Haematology and Stem Cell Transplantation, South-Pest Central Hospital–National Institute of Haematology and Infectology, Budapest, Hungary
| | - Aniko Barta
- Department of Haematology and Stem Cell Transplantation, South-Pest Central Hospital–National Institute of Haematology and Infectology, Budapest, Hungary
| | - Peter Remenyi
- Department of Haematology and Stem Cell Transplantation, South-Pest Central Hospital–National Institute of Haematology and Infectology, Budapest, Hungary
| | - Tamas Masszi
- Department of Haematology and Stem Cell Transplantation, South-Pest Central Hospital–National Institute of Haematology and Infectology, Budapest, Hungary
- 3 Department of Internal Medicine, Semmelweis University, Budapest, Hungary
| |
Collapse
|
4
|
Inhibitory natural killer cell receptor KIR3DL1 with its ligand Bw4 constraints HIV-1 disease among South Indians. AIDS 2018; 32:2679-2688. [PMID: 30289808 DOI: 10.1097/qad.0000000000002028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To investigate the role of genotypic and phenotypic characteristics of killer cell immunoglobulin-like receptors (KIRs) and their human leukocyte antigen (HLA) class-1 ligands in HIV-1 disease progression. STUDY DESIGN AND METHODS This is a nested case-control study including 347 HIV seropositive (HIV-1+) individuals from South India constituting 45 long-term nonprogressors (LTNPs) and 302 disease progressors. KIR genotyping was performed by multiplex sequence-specific primer-directed PCR (SSP-PCR). Phenotypic expressions of KIR3DL1/S1 was studied using multiparametric flow cytometry assay. HLA-Bw4 and Bw6 epitopes were determined by ARMS-PCR. HLA-Bw4I80, HLA-Bw4T80, HLA-C1, HLA-C2, and HLA-Aw4 were genotyped using SSP-PCR. Serum levels of IFN-γ was quantified using ELISA method. RESULTS Overall, 37 different KIR genotypes were observed and the distribution of genotypes with AB-AB (OR = 2.2, P = 0.033) constellations showed significant increase among LTNPs. The frequencies of 3DL1-2DL3-2DL5 (OR = 2.2, Pc = 0.031), 3DL1-Bw4/Aw4 (OR = 2.49, Pc = 0.019), homozygous Bw4 (OR = 2.422, Pc = 0.011) were observed higher in LTNPs and 2DS1-2DS2-2DS3 (OR = 0.475, Pc = 0.03), homozygous Bw6 (OR = 0.413, Pc = 0.011) were higher in the disease progressors. Flow cytometry assay showed the increased expression and maintenance of 3DL1/S1+NK cells in LTNPs (P = 0.0001). Further the expansion of 3DS1+NK cells was higher than 3DL1+NK cells in the heterozygous 3DL1/S1 LTNPs (P = 0.001). CONCLUSION The inhibitory receptor 3DL1 with Bw4 and its A-haplotype defining KIR genes (2DL3/L5) confers protection against HIV-1 disease progression. An increased expression and maintenance of 3DL1/S1+ natural killer cells may contribute to the efficient activation of the natural killer cells and subsequent long-term nonprogression (LTNPn) to the disease.
Collapse
|
5
|
Kalyanaraman N, Thayumanavan L, Jayalakshmi M. KIR : HLA association with clinical manifestations of HBV infection in Madurai, south India. J Genet 2016; 95:13-9. [PMID: 27019428 DOI: 10.1007/s12041-015-0594-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The antiviral action of natural killer (NK) cells is regulated by a wide repertoire of germ-line encoded membrane receptors which recognize the expression of certain self-molecules on target cells. Among the receptors, killer cell immunoglobulinlike receptor (KIR) which recognizes the expression of human leukocyte antigen (HLA) class I has a predominant role in regulating the effector functions of NK cells, particularly in viral infections.We studied a total of 128 hepatitis B virus (HBV) patients (15 acute, 43 asymptomatic, 27 chronic and 43 with other liver diseases) while attending the Department of Medical Gastroenterology, Government Rajaji Hospital, Madurai, India, and 128 ethnic matched control to find the association between the KIR : HLA genes and differential manifestations of HBV. KIR and its ligand HLA polymorphism were identified by DNAPCR methods. The activatory receptor KIR-2DS1 was significantly elevated in various disease categories, namely asymptomatic, chronic and other HBV, except acute HBV infection. Whereas, KIR 2DS3 in acute and chronic patients and KIR 2DS5 and 3DS1 in asymptomatic individuals. Among various KIR-HLA combinations, homozygous 2DS2:C1 and individuals with 3DSI:BW4 (OR = 3.23, CI = 1.55-6.7, Pc = 0.02) are associated with HBV asymptomatism, while most of the two domain inhibitory receptors with their ligands showed significant risk in other liver diseases. Further, KIR3DL1 : HLA Bw4Iso80 (OR = 3.89, 95% CI = 1.58-9.55, Pc = 0.004) is related with higher risk for asymptomatic infection when compared with chronic HBV. Thus, the select KIR : HLA alleles and combinations seem to direct the NK cell activities and immune response in different directions resulting in varied symptoms and manifestations in the subgroups of HBV-infected patients studied.
Collapse
Affiliation(s)
- Narayanan Kalyanaraman
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021,
| | | | | |
Collapse
|
6
|
Petriv OI, Heyries KA, VanInsberghe M, Walker D, Hansen CL. Methods for multiplex template sampling in digital PCR assays. PLoS One 2014; 9:e98341. [PMID: 24854517 PMCID: PMC4031183 DOI: 10.1371/journal.pone.0098341] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 05/01/2014] [Indexed: 11/19/2022] Open
Abstract
The efficient use of digital PCR (dPCR) for precision copy number analysis requires high concentrations of target molecules that may be difficult or impossible to obtain from clinical samples. To solve this problem we present a strategy, called Multiplex Template Sampling (MTS), that effectively increases template concentrations by detecting multiple regions of fragmented target molecules. Three alternative assay approaches are presented for implementing MTS analysis of chromosome 21, providing a 10-fold concentration enhancement while preserving assay precision.
Collapse
Affiliation(s)
- Oleh I. Petriv
- Centre for High-Throughput Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kevin A. Heyries
- Centre for High-Throughput Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Michael VanInsberghe
- Centre for High-Throughput Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - David Walker
- Centre for High-Throughput Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Carl L. Hansen
- Centre for High-Throughput Biology, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada
- * E-mail:
| |
Collapse
|
7
|
Schellekens J, Gagne K, Marsh SGE. Natural killer cells and killer-cell immunoglobulin-like receptor polymorphisms: their role in hematopoietic stem cell transplantation. Methods Mol Biol 2014; 1109:139-58. [PMID: 24473783 DOI: 10.1007/978-1-4614-9437-9_9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Natural killer (NK) cells are important effector cells in the early control of infected, malignant, and "nonself" cells. Various receptor families are involved in enabling NK cells to detect and efficiently eliminate these target cells. The killer-cell immunoglobulin-like receptor (KIR) family is a set of receptors that are very polymorphic with regard to gene content, expression level, and expression pattern. KIRs are responsible for the induction of a NK cell alloreactive response through their interaction with HLA class I molecules. The role of NK cells in hematopoietic stem cell transplantation (HSCT) has been studied for many years, and induction of antileukemic responses by donor NK cells has been reported. Conflicting data still exist on the exact circumstances in which the KIR repertoire affects and influences clinical outcome after HSCT. More large-scale studies are needed on well-defined cohorts to unravel the mechanism of action of the NK cell-mediated alloresponse in an HSCT setting.
Collapse
|
8
|
Killer cell immunoglobulin like receptor gene association with tuberculosis. Hum Immunol 2012; 74:85-92. [PMID: 23073291 DOI: 10.1016/j.humimm.2012.10.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 09/04/2012] [Accepted: 10/03/2012] [Indexed: 12/22/2022]
Abstract
NK cells are vital components of innate immune system and are the first cells which come into picture mediating resistance against intracellular pathogens. NK cell cytotoxicity is modulated by a wide variety of cell surface receptors that recognize and respond towards infected cells. Activation of NK cells are controlled by both inhibitory and activating receptors, encoded by KIR genes and bind to HLA ligands. Not much is known about KIR genes and their influence on the pathogenesis with M. tuberculosis infection. Our study aimed at detecting the presence of 14 KIR genes, their distribution and their association with tuberculosis. Total 77 different genotype combinations were observed which belonged to B-haplotype. Fifteen genotypes were similar to those reported in other world populations while remaining 62 were unique to this study group. Inhibitory genes KIR3DL1, KIR2DL3 and activating genes KIR2DS1, KIR2DS5 conferred susceptibility towards TB either individually or in haplotype combinations. The complimentary MHC ligands need to be tested for the functional relevance of the associated genes.
Collapse
|