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Hatem Zayed
Type 1 diabetes (T1D) is a complex autoimmune disorder that results from the T cell-mediated destruction of the pancreatic β cells and is due to interactions between environmental and genetic factors. Although Arabs have one of the highest global incidence and prevalence rates of T1D, unfortunately, there is a dearth of information regarding the genetic epidemiology of T1D in the Arab world. Arabs share several HLA haplotypes with other ethnic groups, which confer either susceptibility or protection to T1D, but they have specific haplotypes that are distinctive from other ethnicities...
May 2016: Current Diabetes Reports
George Pentheroudakis, Georgia Raptou, Vassiliki Kotoula, Ralph M Wirtz, Eleni Vrettou, Vasilios Karavasilis, Georgia Gourgioti, Chryssa Gakou, Konstantinos N Syrigos, Evangelos Bournakis, Grigorios Rallis, Ioannis Varthalitis, Eleni Galani, Georgios Lazaridis, George Papaxoinis, Dimitrios Pectasides, Gerasimos Aravantinos, Thomas Makatsoris, Konstantine T Kalogeras, George Fountzilas
BACKGROUND: Although host immune response is an emerging prognostic factor for colorectal cancer, there is no consensus on the optimal methodology, surrogate markers or tissue for study. PATIENTS AND METHODS: Tumour blocks were prospectively collected from 344 patients with stage II/III colorectal cancer (CRC) treated with adjuvant chemotherapy. Whole section lymphocytic infiltration was studied along with mRNA expression of CD3Z, CD8, CD4, CXCL9, CXCL13, IGHM, FOXP3, SNAI2 and ESR1 by qRT-qPCR in tissue microarray (TMA) cores from the centre of tumour, invasive margin and adjacent normal mucosa...
2015: PloS One
Zouidi Ferjeni, D Bouzid, H Fourati, M Stayoussef, O Abida, T Kammoun, M Hachicha, C Penha-Gonçalves, H Masmoudi
Type 1 diabetes (T1D) is caused by an immune-mediated destruction of the insulin-producing β-cells. Several studies support the involvement of T cell activation molecules in the pathogenesis of T1D. In order to underline the role of the genes involved in this activation pathway, we investigated, using the Sequenom MassARRAY platform, 45 single-nucleotide polymorphisms (SNPs) belonging to TCR/CD3, CD28, ZAP70, and PTPN22 genes in 59 T1D Tunisian families. In the current study, we identified an association with rs706 (Z score=2...
January 2015: Immunology Letters
John K Wiencke, Paige M Bracci, George Hsuang, Shichun Zheng, Helen Hansen, Margaret R Wrensch, Terri Rice, Melissa Eliot, Karl T Kelsey
Quantitating the copy number of demethylated CpG promoter sites of the CD3Z gene can be used to estimate the numbers and proportions of T cells in human blood and tissue. Quantitative methylation specific PCR (qPCR) is useful for studying T cells but requires extensive calibration and is imprecise at low copy numbers. Here we compared the performance of a new digital PCR platform (droplet digital PCR or ddPCR) to qPCR using bisulfite converted DNA from 157 blood specimens obtained from ambulatory care controls and patients with primary glioma...
October 2014: Epigenetics: Official Journal of the DNA Methylation Society
Evripidis Lanitis, Mathilde Poussin, Alex W Klattenhoff, Degang Song, Raphael Sandaltzopoulos, Carl H June, Daniel J Powell
Adoptive immunotherapy using T lymphocytes genetically modified to express a chimeric antigen receptor (CAR-T) holds considerable promise for the treatment of cancer. However, CAR-based therapies may involve on-target toxicity against normal tissues expressing low amounts of the targeted tumor-associated antigen (TAA). To specify T cells for robust effector function that is selective for tumor but not normal tissue, we developed a trans-signaling CAR strategy, whereby T-cell activation signal 1 (CD3z) is physically dissociated from costimulatory signal 2 (CD28) in two CARs of differing antigen specificity: mesothelin and a-folate receptor (FRa)...
July 2013: Cancer Immunology Research
John K Wiencke, William P Accomando, Shichun Zheng, Joe Patoka, Xiaoqin Dou, Joanna J Phillips, George Hsuang, Brock C Christensen, E Andres Houseman, Devin C Koestler, Paige Bracci, Joseph L Wiemels, Margaret Wrensch, Heather H Nelson, Karl T Kelsey
Immune factors are thought to influence glioma risk and outcomes, but immune profiling studies to further our understanding of the immune response are limited by current immunodiagnostic methods. We developed a new assay to capture glioma immune biology based on quantitative methylation specific PCR (qMSP) of two T-cell genes (CD3Z: T-cells, and FOXP3: Tregs). Flow cytometry of T-cells correlated well with the CD3Z demethylation assay (r = 0.93; p < 2.2 × 10 (-16) ), demonstrating the validity of the assay...
December 1, 2012: Epigenetics: Official Journal of the DNA Methylation Society
Hao-jie Li, Zhen-bin Shen, Yi-hong Sun, Feng-lin Liu, Hong-shan Wang, Wei-dong Chen
OBJECTIVE: To investigate the association of the expressions of Th1 cytokines in gastric cancer tissue and the prognosis of patients with gastric cancer after radical resection. METHODS: Fifty-eight patients with gastric cancer treated at the Zhongshan Hospital of Fudan University were retrospectively analyzed. The expressions of Th1 cytokines mRNA were detected in tumor tissues by real-time polymerase chain reaction(RT-PCR) method in Th1 cells including TRAV10, IRF1, TBX21, CD3Z, GZMB, GATA3, and IFNG...
June 2012: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
Li-Ping Pan, Wei Zhang, Li Zhang, Xiao-Pan Wu, Xi-Lin Zhu, Bing-Yu Yan, Jing-Yun Li, Ai-Qiang Xu, Ying Liu, Hui Li
Vaccination against hepatitis B virus is an effective and routine practice that can prevent infection. However, vaccine-induced immunity to hepatitis B varies among individuals. CD4(+) T helper cells, which play an important role in both cellular and humoral immunity, are involved in the immune response elicited by vaccination. Polymorphisms in the genes involved in stimulating the activation and proliferation of CD4(+) T helper cells may influence the immune response to hepatitis B vaccination. In the first stage of the present study, a total of 111 single nucleotide polymorphisms (SNPs) in 17 genes were analyzed, using the iPLEX MassARRAY system, among 214 high responders and 107 low responders to hepatitis B vaccination...
2012: PloS One
R Li, W Yang, J Zhang, N Hirankarn, H-F Pan, C C Mok, T M Chan, R W S Wong, M Y Mok, K W Lee, S N Wong, A M H Leung, X-P Li, Y Avihingsanon, T L Lee, M H K Ho, P P W Lee, W H S Wong, C-M Wong, I O L Ng, J Yang, P H Li, Y Zhang, L Zhang, W Li, L Baum, P Kwan, P Rianthavorn, T Deekajorndej, K Suphapeetiporn, V Shotelersuk, M-M Garcia-Barceló, S S Cherny, P K-H Tam, P C Sham, C S Lau, N Shen, Y l Lau, D-Q Ye
OBJECTIVE: Systemic lupus erythematosus (SLE) is a prototypic autoimmune disease with complex genetic inheritance. CD247 (CD3Z, TCRZ) plays a vital role in antigen recognition and signal transduction in antigen-specific immune responses, and is known to be involved in SLE pathogenesis. Weak disease association was reported for genetic variants in this gene in Caucasian studies for SLE, Crohn's disease and systemic sclerosis, but its role as a genetic risk factor was never firmly established...
January 2012: Lupus
Grace P Yu, Kari C Nadeau, David R Berk, Geneviève de Saint Basile, Nathalie Lambert, Perrine Knapnougel, Joseph Roberts, Kristina Kavanau, Elizabeth Dunn, E Richard Stiehm, David B Lewis, Dale T Umetsu, Jennifer M Puck, Morton J Cowan
There are few reports of clinical presentation, genotype, and HCT outcomes for patients with T-B+NK+ SCID. Between 1981 and 2007, eight of 84 patients with SCID who received and/or were followed after HCT at UCSF had the T-B+NK+ phenotype. One additional patient with T-B+NK+ SCID was identified as the sibling of a patient treated at UCSF. Chart reviews were performed. Molecular analyses of IL7R, IL2RG, JAK3, and the genes encoding the CD3 T-cell receptor components δ (CD3D), ε (CD3E), and ζ (CD3Z) were carried out...
November 2011: Pediatric Transplantation
Michel Noutsias, Maria Rohde, Katrin Göldner, Andrea Block, Katja Blunert, Lara Hemaidan, Michael Hummel, Jan-Henrik Blohm, Dirk Lassner, Uwe Kühl, Heinz-Peter Schultheiss, Hans-Dieter Volk, Katja Kotsch
AIMS: To quantify and functionally characterize the intramyocardial T-cells in endomyocardial biopsies (EMBs) from patients presenting with acute myocarditis (AMC) and dilated cardiomyopathy (DCM). METHODS AND RESULTS: Expression of genes characterizing Th1 [interferon (IFN)γ, Tbet-1, Eomesodermin, interleukin (IL)-27], Th2 (IL-4, IL-5, GATA3), Th17 (IL-17), regulatory [regulatory T-cells (Treg); FoxP3, TGFβ, IL-10], anergic (GRAIL), and cytotoxic T-cells (CTLs: Perforin, Granulysin, Granzyme A), as well as of functional T-cell receptor Vbeta (TRBV) families were investigated in EMBs from AMC patients (n= 58) and DCM patients (n= 34) by pre-amplified real-time reverse transcription-polymerase chain reaction...
June 2011: European Journal of Heart Failure
Kristi Kerkel, Nicole Schupf, Kota Hatta, Deborah Pang, Martha Salas, Alexander Kratz, Mark Minden, Vundavalli Murty, Warren B Zigman, Richard P Mayeux, Edmund C Jenkins, Ali Torkamani, Nicholas J Schork, Wayne Silverman, B Anne Croy, Benjamin Tycko
The primary abnormality in Down syndrome (DS), trisomy 21, is well known; but how this chromosomal gain produces the complex DS phenotype, including immune system defects, is not well understood. We profiled DNA methylation in total peripheral blood leukocytes (PBL) and T-lymphocytes from adults with DS and normal controls and found gene-specific abnormalities of CpG methylation in DS, with many of the differentially methylated genes having known or predicted roles in lymphocyte development and function. Validation of the microarray data by bisulfite sequencing and methylation-sensitive Pyrosequencing (MS-Pyroseq) confirmed strong differences in methylation (p<0...
November 2010: PLoS Genetics
T Warchoł, P Piotrowski, M Lianeri, D Cieślak, M Wudarski, P Hrycaj, J K Lacki, P P Jagodziński
Recently, a family-based association analysis showed that the haplotype carrying a low expression of the variant CD3Z 844 T>A (rs1052231) polymorphism located in the 3'-untranslated region of CD3Z predisposes to systemic lupus erythematosus (SLE) incidence. We analyzed the prevalence of the CD3Z 844 T>A polymorphism in SLE patients (n = 152) and controls (n = 304) in Poland. We observed that women with the CD3Z AA and CD3Z AT genotypes exhibited a 1.845-fold increased risk of SLE [95% confidence intervals (95% CI) = 1...
July 2009: Tissue Antigens
Claire L Gorman, Andrew I Russell, Zhuoli Zhang, Deborah Cunninghame Graham, Andrew P Cope, Timothy J Vyse
TCRzeta (CD247) functions as an amplification module in the TCR signaling cascade and is essential for assembly and surface expression of the TCR/CD3 complex. The TCRzeta-chain is down-regulated in many chronic infectious and inflammatory diseases, including systemic lupus erythematosus (SLE). It is unclear whether reduced TCRzeta expression is a cause or a consequence of chronic inflammatory responses. We have addressed this question by adopting a combined genetic and functional approach. We analyzed TCRzeta protein expression using a FACS-based expression index and documented considerable, but longitudinally stable, variation in TCRzeta expression in healthy individuals...
January 15, 2008: Journal of Immunology: Official Journal of the American Association of Immunologists
H Miyagawa, M Yamai, D Sakaguchi, C Kiyohara, H Tsukamoto, Y Kimoto, T Nakamura, J-H Lee, C-Y Tsai, B-L Chiang, T Shimoda, M Harada, T Tahira, K Hayashi, T Horiuchi
OBJECTIVE: Identification of the genes responsible for systemic lupus erythematosus (SLE). METHODS: All the exons and putative promoter regions of 53 candidate genes (TNFRSF6/Fas, TNFSF6/FasL, Fli1, TNFSF10/TRAIL, TNFSF12/TWEAK, Bcl-2, PTEN, FADD, TRADD, CDKN1A, TNFRSF1A/TNFR1, TNFRSF4/OX40, TNFSF4/OX40L, TNFSF5/CD40L, TNFSF13B/BAFF, ICOS, CTLA4, CD28, FYN, G2A, CR2, PTPRC/CD45, CD22, CD19, Lyn, PDCD1, PTPN6, TGFB1, TGFB2, TGFB3, TGFBR1, TGFBR2, TGFBR3, CD3Z, DNASE1, APCS, MERTK, C3, C1QA, C1QB, C1QG, C2, MBL2, IGHM, IL-2, IL-4, IL-10, IFNG, TNFA, MAN2A1, TNFRSF11A/RANK, TNFRSF11B/OPG, TNFSF11/OPGL) were screened for single nucleotide polymorphisms (SNPs) and their association with SLE was assessed by case-control studies...
February 2008: Rheumatology
Nehad M Alajez, Saman Eghtesad, Olivera J Finn
We report here the design and construction of several gene vectors for expression in mammalian cells of membrane-bound and soluble human T cell receptors (TR). We designed a vector (TR-ALPHA-IRES-TR-BETA pEF4) that encodes high-level expression of the full-length TR on the surface of T cells. Furthermore, we engineered TR that does not require the presence of endogenous CD3 molecules for surface expression and thus expression is not limited to T cells. We also constructed a vector encoding a single-chain TR (scTR) as a fusion protein of V-ALPHA-V-BETA-C-BETA with CD3Z...
2006: Journal of Biomedicine & Biotechnology
Xuemei Xie, Hong He, Marco Colonna, Tsukasa Seya, Toshiyuki Takai, B Anne Croy
Activated natural killer (NK) cells proliferate in large numbers in murine mesometrial endometrium from Day 6 to Day 12 of gestation (term = 19 gestation days) to become the most abundant uterine lymphocytes. Early human decidua contains analogous CD56+/CD16- cells. Murine uterine (u)NK cells localize to decidua basalis and mesometrial lymphoid aggregate of pregnancy (MLAp). Decidua and MLAp are transient, pregnancy-associated tissues traversed by maternal arteries to the placentas. Uterine NK cells sensitize these arteries, facilitating their structural changes into high-volume conduits by Gestation Day 10 through release of interleukin (IL)-18, interferon (IFN)-gamma, vascular endothelial growth factor (VEGF), and other molecules...
September 2005: Biology of Reproduction
Ahalia M Ferreira, Barrett J Rollins, Douglas E Faunce, Aime L Burns, Xiaofeng Zhu, Luisa A Dipietro
The expression of chemokines has been suggested to involve an interdependent network, with the absence of a single chemokine affecting the expression of multiple other chemokines. Monocyte chemoattractant protein (MCP-1), a member of C-C chemokine superfamily, plays a critical role in the recruitment and activation of leukocytes during acute inflammation. To examine the effect of the loss of MCP-1 on expression of the chemokine network, we compared the mRNA expression profiles of MCP-1(-/-) and wild type mice during the acute inflammatory phase of excisional wounds...
April 21, 2005: Cytokine
A Matsuura, M Kinebuchi, Y Itoh, K Kasai, K Yamada, M C Yoshida, M Horie, K Kikuchi, N Sato
The structure and pattern of expression of the CD3zeta chain have apparently been conserved throughout mammalian evolution. The organization of the rat CD3zeta locus was determined by genomic cloning and nucleotide sequencing. Most of the rat CD3zeta coding region was similar to mouse and human CD3zeta sequences. Whereas the 3' region involving alternative splicing was relatively well conserved at the nucleotide level, the deduced amino acid sequences were different in rats, mice and humans due to the presence of deletion and insertion mutations...
1999: Cytogenetics and Cell Genetics
M R Amarante, H A Ansari, D W Maher, P D Pearce, T E Broad
No abstract text is available yet for this article.
May 1996: Mammalian Genome: Official Journal of the International Mammalian Genome Society
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