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killer cell immunoglobulin

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https://www.readbyqxmd.com/read/28529313/impact-of-killer-immunoglobulin-like-receptor-and-human-leukocyte-antigen-genotypes-on-the-efficacy-of-immunotherapy-in-acute-myeloid-leukemia
#1
E Bernson, A Hallner, F E Sander, O Wilsson, O Werlenius, A Rydström, R Kiffin, M Brune, R Foà, J Aurelius, A Martner, K Hellstrand, F B Thorén
Interactions between killer-immunoglobulin-like receptors (KIRs) and their HLA class I ligands are instrumental in natural killer (NK) cell regulation and protect normal tissue from NK cell attack. Human KIR haplotypes comprise genes encoding mainly inhibitory receptors (KIR A) or activating and inhibitory receptors (KIR B). A substantial fraction of humans lack ligands for inhibitory KIRs (iKIRs), i.e. a 'missing ligand' genotype. KIR B/x and missing ligand genotypes may thus give rise to potentially autoreactive, unlicensed NK cells...
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28528709/association-between-the-killer-cell-immunoglobulin-like-receptor-a-haplotype-and-childhood-acute-lymphoblastic-leukemia
#2
Awad E Osman, Abdullah Aljuryan, Hanan Al-Harthi, Mai Almeshari
Killer immunoglobulin-like receptors (KIRs) have the ability to regulate Natural killer (NK) cell function through inhibition/activation mechanisms. Healthy human cells express HLA class I ligands on their surface, which are recognized by NK cells to avoid spontaneous cell destruction. The associations of KIRs and/or HLA class 1 ligands in leukemic patients have been studied in some populations, with some of these studies demonstrating an association of specific types with leukemia. KIRs and their corresponding HLA class 1 ligands were investigated in Saudi patients with ALL and AML and compared to healthy controls...
May 18, 2017: Human Immunology
https://www.readbyqxmd.com/read/28523429/kir-lilrb-and-their-ligands-genes-as-potential-biomarkers-in-recurrent-implantation-failure
#3
REVIEW
Izabela Nowak, Karolina Wilczyńska, Jacek R Wilczyński, Andrzej Malinowski, Paweł Radwan, Michał Radwan, Piotr Kuśnierczyk
Reproductive failure in humans is a very important social and economic problem, because nowadays women decide to conceive later in life and delay motherhood. Unfortunately, with increasing age they have less chance for natural fertilization and maintenance of pregnancy. Many of them need assisted reproductive technology. Approximately 10% of women after in vitro fertilization-embryo transfers experience recurrent implantation failure (RIF). Multiple factors may contribute to RIF, including oocyte and sperm quality, parental chromosomal anomalies, genetic or metabolic abnormalities of the embryo, poor uterine receptivity, immunological disturbances in the implantation site, and some gynecologic pathologies such as endometriosis, uterine fibroids, hydrosalpinx and endometrial polyps...
May 18, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28520526/kir3dl1-hl-a-b-subtypes-govern-acute-myelogenous-leukemia-relapse-after-hematopoietic-cell-transplantation
#4
Jeanette E Boudreau, Fabio Giglio, Ted A Gooley, Philip A Stevenson, Jean-Benoît Le Luduec, Brian C Shaffer, Raja Rajalingam, Lihua Hou, Carolyn Katovich Hurley, Harriet Noreen, Elaine F Reed, Neng Yu, Cynthia Vierra-Green, Michael Haagenson, Mari Malkki, Effie W Petersdorf, Stephen Spellman, Katharine C Hsu
Purpose Disease relapse remains a major challenge to successful outcomes in patients who undergo allogeneic hematopoietic cell transplantation (HCT). Donor natural killer (NK) cell alloreactivity in HCT can control leukemic relapse, but capturing alloreactivity in HLA-matched HCT has been elusive. HLA expression on leukemia cells-upregulated in the post-HCT environment-signals for NK cell inhibition via inhibitory killer immunoglobulin-like (KIR) receptors and interrupts their antitumor activity. We hypothesized that varied strengths of inhibition among subtypes of the ubiquitous KIR3DL1 and its cognate ligand, HLA-B, would titrate NK reactivity against acute myelogenous leukemia (AML)...
May 18, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28515320/recognition-of-nectin-2-by-the-natural-killer-cell-receptor-tigit
#5
Felix A Deuss, Benjamin S Gully, Jamie Rossjohn, Richard Berry
T cell immunoglobulin and ITIM domain (TIGIT) is an inhibitory receptor expressed on the surface of natural killer (NK) cells. TIGIT recognizes nectin and nectin-like adhesion molecules and thus plays a critical role in the innate immune response to malignant transformation. While the TIGIT nectin-like protein-5 (necl-5) interaction is well understood, how TIGIT engages nectin-2, a receptor that is broadly over-expressed in breast and ovarian cancer, remains unknown. Here, we show that TIGIT bound to the immunoglobulin domain of nectin-2 that is most distal from the membrane with an affinity of 6 μM, which was moderately lower than the affinity observed for the TIGIT-necl-5 interaction (3...
May 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28504566/influence-of-lactobacillus-reuteri-l26-biocenol%C3%A2-on-immune-response-against-porcine-circovirus-type-2-infection-in-germ-free-mice
#6
V Karaffová, T Csank, D Mudroňová, J Király, V Revajová, S Gancarčíková, R Nemcová, J Pistl, Š Vilček, M Levkut
Probiotic bacteria are frequently used for prevention of bacterial infections of the gastrointestinal tract, but there are only limited studies on their efficacy against viral gut infections in animals. The aim of this study was to investigate the effect of probiotic Lactobacillus reuteri L26 Biocenol(TM) on the innate and adaptive immune responses in germ-free Balb/c mice, experimentally infected by porcine circovirus type 2 (PCV2), which confers immunosuppressive effect. A total of 30 six-week-old female mice were divided into 3 groups and animals in experimental group LPCV (n=10) were inoculated with L...
May 15, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28501365/why-natural-killer-cells-are-not-enough-a-further-understanding-of-killer-immunoglobulin-like-receptor-and-human-leukocyte-antigen
#7
REVIEW
Diana Alecsandru, Juan A García-Velasco
The immune system's role in recurrent reproductive failure is a controversial issue in assisted reproduction. Most studies into immune system implication in reproduction have focused on finding markers of peripheral blood and less on the uterine environment. Peripheral blood natural killer cells have become an "immune study core" for women with recurrent miscarriage or recurrent implantation failure, based on the mistaken notion that they cause reproductive failure by killing or "rejecting" the embryo. Maternal-fetal tolerance begins at the uterine level, so successful adaptation to the fetus occurs after a complicated process...
May 10, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28484170/chronic-myeloid-leukemia-and-nk-cell-immunity
#8
Hiroshi Ureshino, Takero Shindo, Hidenori Tanaka, Shinaya Kimura
BCR-ABL1 tyrosine kinase inhibitors (TKIs) have dramatically improved the long-term outcomes of patients with chronic myelogenous leukemia (CML). Notably, approximately half of patients with a sustained deep molecular response experienced treatment free remission (TFR) even after discontinuation of TKI. Although antitumor immunity by natural killer (NK) cells might contribute to the effects of TKI and TFR in CML, the details of their actions have not as yet been elucidated. Recently, several reports have raised the possibility that the killer immunoglobulin-like receptor (KIR), a highly polymorphic NK cell receptor, may play important roles, because polymorphic patterns of KIR were shown to be associated with the intensity of clinical responses and outcomes in TKI-treated CML patients...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28481352/partial-break-in-tolerance-of-nkg2a-lir-1-single-kir-nk-cells-early-in-the-course-of-hla-matched-kir-mismatched-hematopoietic-cell-transplantation
#9
S Rathmann, C Keck, C Kreutz, N Weit, M Müller, J Timmer, S Glatzel, M Follo, M Malkovsky, M Werner, R Handgretinger, J Finke, P Fisch
Natural killer (NK) cell subpopulations from 8 HLA-matched but killer cell immunoglobulin-like receptor (KIR)/HLA-ligand-mismatched patient-donor pairs were analyzed in the course of allogeneic hematopoietic stem cell transplantation (HCT). The patients' post-transplantation NKG2A(-)/LIR-1(-) NK cells, which expressed only inhibitory KIRs for which the patient had no HLA class I ligands, showed higher cytotoxic capacity than the NKG2A(-)/LIR-1(-) NK cells lacking any inhibitory KIRs that remained tolerant throughout the course of HCT...
May 8, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28466469/recipient-donor-kir-ligand-matching-prevents-cmv-reactivation-post-haploidentical-t-cell-replete-transplantation
#10
Xiang-Yu Zhao, Xue-Yi Luo, Xing-Xing Yu, Xiao-Su Zhao, Ting-Ting Han, Ying-Jun Chang, Ming-Rui Huo, Lan-Ping Xu, Xiao-Hui Zhang, Kai-Yan Liu, Dan Li, Zheng-Fan Jiang, Xiao-Jun Huang
Licensed natural killer (NK) cells have been demonstrated to have anti-cytomegalovirus (CMV) activity. We prospectively analysed the human leucocyte antigen typing of donor-recipient pairs and the killer cell immunoglobulin-like receptor (KIR) typing of donors for 180 leukaemia patients to assess the predictive roles of licensed NK cells on CMV reactivation post-T-cell-replete haploidentical stem cell transplantation. Multivariate analysis showed that donor-recipient KIR ligand graft-versus-host or host-versus-graft direction mismatch was associated with increased refractory CMV infection (Hazard ratio = 2·556, 95% confidence interval, 1·377-4·744, P = 0·003) post-transplantation...
May 3, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28460032/association-of-retinal-architecture-intrathecal-immunity-and-clinical-course-in-multiple-sclerosis
#11
Benjamin Knier, Gildas Leppenetier, Carmen Wetzlmair, Lilian Aly, Muna-Miriam Hoshi, Verena Pernpeintner, Viola Biberacher, Achim Berthele, Mark Mühlau, Claus Zimmer, Bernhard Hemmer, Thomas Korn
Importance: Biomarkers to estimate long-term outcomes in patients with multiple sclerosis (MS) and to assign patients to individual treatment regimens are urgently needed. Objective: To assess whether retinal layer volumes are correlated with immune cell subsets and immunoglobulin indices in the cerebrospinal fluid and whether retinal layer volumes alone or in combination with intrathecal variables are associated with worsening of disease in patients with relapsing-remitting MS...
May 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28445138/killer-cell-immunoglobulin-like-receptor-2dl4-is-expressed-in-and-suppresses-the-cell-growth-of-langerhans-cell-histiocytosis
#12
Yusuke Takei, Chiyuki Ueshima, Tatsuki R Kataoka, Masahiro Hirata, Akihiko Sugimoto, Mariyo Rokutan-Kurata, Koki Moriyoshi, Kazuo Ono, Ichiro Murakami, Sanju Iwamoto, Hironori Haga
Killer cell immunoglobulin-like receptor (KIR) 2DL4 (CD158d) is a receptor for human leukocyte antigen-G. The function of KIR2DL4 has been reported in human natural killer cell lymphoma and mastocytosis, but not in Langerhans cell histiocytosis (LCH). Herein, we examined the expression and function of KIR2DL4 in LCHs. In pathological specimens, 27 of 36 LCH cases (75.0%) were immunohistochemically positive for KIR2DL4. Its expression was independent of age, gender, location, multi- or single-system, and the status of BRAFV600E immunostaining...
April 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28440449/preoperative-tim%C3%A2-3-expression-on-peripheral-nk-cells-is-correlated-with-pathologic-tnm-staging-in-colorectal-cancer
#13
Yang Wang, Jintang Sun, Wenjuan Gao, Bingfeng Song, Qianqian Shao, Lei Zhao, Yun Zhang, Qingjie Wang, Yun Zhang, Xun Qu
Previous research has indicated that T cell immunoglobulin and mucin domain 3 (Tim-3) serves an important regulatory role in lymphocytes and in several cancers. However, the association between Tim‑3 expression on various lymphocyte subsets and human colorectal cancer (CRC) has not been elucidated. The present study aimed to characterize Tim‑3 expression on peripheral lymphocytes, including cluster of differentiation CD3+CD56‑ T cells, CD3‑CD56+ natural killer (NK) cells and CD3+CD56+ natural killer T (NKT) cells, in patients with CRC...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28428937/intravenous-immunoglobulin-g-in-women-with-reproductive-failure-the-korean-society-for-reproductive-immunology-practice-guidelines
#14
REVIEW
Nayoung Sung, Ae Ra Han, Chan Woo Park, Dong Wook Park, Joon Cheol Park, Na Young Kim, Kyung Sil Lim, Ji Eun Shin, Chang Woo Joo, Seung Eun Lee, Jae Won Kim, Sung Ki Lee
The task force of the Korean Society for Reproductive Immunology recommends intravenous immunoglobulin G treatment in women with reproductive failure, including recurrent pregnancy loss and/or repeated implantation failure, who show cellular immune factors such as abnormal natural killer cell levels, natural killer cell cytotoxicity, and/or type 1 T helper immunity.
March 2017: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28415754/gene-modified-nk-92mi-cells-expressing-a-chimeric-cd16-bb-%C3%AE-or-cd64-bb-%C3%AE-receptor-exhibit-enhanced-cancer-killing-ability-in-combination-with-therapeutic-antibody
#15
Ying Chen, Fengtao You, Licui Jiang, Jialu Li, Xuejun Zhu, Yangyi Bao, Xiang Sun, Xiaowen Tang, Huimin Meng, Gangli An, Bozhen Zhang, Lin Yang
Natural killer (NK) cells play a pivotal role in monoclonal antibody-mediated immunotherapy through the antibody-dependent cell-mediated cytotoxicity (ADCC) mechanism. NK-92MI is an interleukin-2 (IL-2)-independent cell line, which was derived from NK-92 cells with superior cytotoxicity toward a wide range of tumor cells in vitro and in vivo. Nonetheless, the Fc-receptor (CD16) that usually mediates ADCC is absent in NK-92 and NK-92MI cells. To apply NK-92MI cell-based immunotherapy to cancer treatment, we designed and generated two chimeric receptors in NK-92MI cells that can bind the Fc portion of human immunoglobulins...
March 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412292/hla-bw4-80-t-and-multiple-hla-bw4-copies-combined-with-kir3dl1-associate-with-spontaneous-clearance-of-hcv-infection-in-people-who-inject-drugs
#16
Christine Thöns, Tina Senff, Theresa J Hydes, Angela R Manser, Falko M Heinemann, Andreas Heinold, Martin Heilmann, Arthur Y Kim, Markus Uhrberg, Norbert Scherbaum, Georg M Lauer, Salim I Khakoo, Jörg Timm
BACKGROUND AND AIMS: NK cell function is regulated by inhibitory and activating receptors including killer-cell immunoglobulin-like receptors (KIRs). Here, we analyzed the impact of different KIR/KIR-ligand genotypes on the outcome of HCV infection in people who inject drugs (PWID). KIR/KIR-ligand genotypes associated with spontaneous clearance of HCV infection were identified in a cohort of PWID from Germany (n=266) and further validated in a second anti-HCV positive cohort of PWID recruited in North America (n=342)...
April 12, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28386256/host-immune-responses-in-hiv-1-infection-the-emerging-pathogenic-role-of-siglecs-and-their-clinical-correlates
#17
REVIEW
Joanna Mikulak, Clara Di Vito, Elisa Zaghi, Domenico Mavilio
A better understanding of the mechanisms employed by HIV-1 to escape immune responses still represents one of the major tasks required for the development of novel therapeutic approaches targeting a disease still lacking a definitive cure. Host innate immune responses against HIV-1 are key in the early phases of the infection as they could prevent the development and the establishment of two hallmarks of the infection: chronic inflammation and viral reservoirs. Sialic acid-binding immunoglobulin-like lectins (Siglecs) belong to a family of transmembrane proteins able to dampen host immune responses and set appropriate immune activation thresholds upon ligation with their natural ligands, the sialylated carbohydrates...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28357111/typing-of-killer-cell-immunoglobulin-like-receptors-and-their-cognate-human-leukocyte-antigen-class-i-ligands-predicts-survival-of-chinese-han-patients-with-metastatic-non-small-cell-lung-cancer
#18
Hui Yu, Fang Liu, Benoit Sansas, Bin Kang, Xavier Preville, Xianghua Wu, Jianhua Chang, Romain Micol, Jialei Wang, Xia Meng
Non-small-cell lung cancer (NSCLC) may establish an immunosuppressive tumor microenvironment that is conducive to tumor growth. Natural killer (NK) cells play a pivotal role in immunological surveillance. Activation of NK cells partially depends on the interactions between killer-cell immunoglobulin-like receptors (KIRs) and human leukocyte antigen (HLA) class I ligands. We herein investigated the association of KIRs and HLA ligands with survival in metastatic NSCLC (mNSCLC) patients treated with chemotherapy in a Chinese Han population...
February 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28356208/paraclinical-findings-in-iranian-veterans-exposed-to-sulfur-mustard-gas-a-literature-review
#19
Seyed Mansour Razavi, Masoud Saghafinia, Payman Salamati
OBJECTIVE: Sulfur mustard (SM) causes various systemic disturbances in human beings. This study aimed to assess paraclinical changes caused by exposure to SM gas in Iranian veterans during the war between Iraq and Iran. METHODS: A literature review was carried out in international and national medical databases including ISI, Medline, Scopus, Iranmedex and Irandoc. Both Farsi and English literature were searched. RESULTS: Search of the literature yielded 422 medical articles related to SM poisoning...
April 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28352266/canonical-and-cross-reactive-binding-of-nk-cell-inhibitory-receptors-to-hla-c-allotypes-is-dictated-by-peptides-bound-to-hla-c
#20
Malcolm J W Sim, Stacy A Malaker, Ayesha Khan, Janet M Stowell, Jeffrey Shabanowitz, Mary E Peterson, Sumati Rajagopalan, Donald F Hunt, Daniel M Altmann, Eric O Long, Rosemary J Boyton
BACKGROUND: Human natural killer (NK) cell activity is regulated by a family of killer cell immunoglobulin-like receptors (KIRs) that bind human leukocyte antigen (HLA) class I. Combinations of KIR and HLA genotypes are associated with disease, including susceptibility to viral infection and disorders of pregnancy. KIR2DL1 binds HLA-C alleles of group C2 (Lys(80)). KIR2DL2 and KIR2DL3 bind HLA-C alleles of group C1 (Asn(80)). However, this model cannot explain HLA-C allelic effects in disease or the impact of HLA-bound peptides...
2017: Frontiers in Immunology
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