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https://www.readbyqxmd.com/read/28449453/cardiac-regeneration-using-hla-matched-induced-pluripotent-stem-cells-no-monkey-business-but-still-a-long-and-winding-road-ahead
#1
EDITORIAL
Daniel Sinnecker
No abstract text is available yet for this article.
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449409/real-time-central-assessment-of-kidney-transplant-indication-biopsies-by-microarrays-the-intercomex-study
#2
Philip F Halloran, Jeff Reeve, Enver Akalin, Olivier Aubert, Georg A Bohmig, Daniel Brennan, Jonathan Bromberg, Gunilla Einecke, Farsad Eskandary, Clement Gosset, Jean-Paul Duong Van Huyen, Gaurav Gupta, Carmen Lefaucheur, Andrew Malone, Roslyn B Mannon, Daniel Seron, Joana Sellares, Matthew Weir, Alexandre Loupy
We performed a prospective trial to assess the feasibility of real-time central molecular assessment of kidney transplant biopsies from 10 North American and European centers. Biopsies taken one day to 34 years post-transplant were stabilized in RNAlater, couriered overnight at ambient temperature to the central laboratory, and processed (29 hour workflow) using microarrays to assess T cell-mediated and antibody-mediated rejection (TCMR, ABMR). Of 538 biopsies submitted, 519 (96%) were sufficient for microarray analysis (average length 3mm)...
April 27, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28449350/scandiatransplant-acceptable-mismatch-program-stamp-a-bridge-to-transplanting-highly-immunized-patients
#3
P Koefoed-Nielsen, I Weinreich, M Bengtsson, J Lauronen, C Naper, M Gäbel, S S Sørensen, L Wennberg, A V Reisaeter, B K Møller
BACKGROUND: Highly immunized patients are a challenge for organ transplantation programs. One way of increasing the likelihood of transplantation in this group of patients is to expand the possible donations by defining acceptable HLA mismatches. In the Scandiatransplant Acceptable Mismatch Program (STAMP), a de-centralized approach has been implemented in 2009. AIMS: The program has been improved during the years from utilizing HLA-A, -B, -DR matching only to include typing of all deceased donors for HLA-A, -B, -C, -DRB1 and -DQB1...
April 27, 2017: HLA
https://www.readbyqxmd.com/read/28449344/endoscopic-features-and-genetic-background-of-inflammatory-bowel-disease-complicated-with-takayasu-arteritis
#4
Shintaro Akiyama, Toshimitsu Fujii, Katsuyoshi Matsuoka, Ebana Yusuke, Mariko Negi, Kento Takenaka, Masakazu Nagahori, Kazuo Ohtsuka, Mitsuaki Isobe, Mamoru Watanabe
BACKGROUND AND AIM: Takayasu arteritis (TA) is occasionally complicated with inflammatory bowel disease (IBD). This study assessed the endoscopic and genetic features of IBD complicated with TA (IBD-TA). METHODS: This study retrospectively reviewed the clinical charts of 142 TA patients (14 men and 128 women; median age 48.5 years [range, 18-97 years]). Human lymphocyte antigen (HLA) types and a single-nucleotide polymorphism rs6871626 in the IL12B gene were assessed in 101 and 81 patients with TA, respectively...
May 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28448672/correlation-between-the-inflammatory-marker-hla-dr-and-signs-and-symptoms-in-moderate-to-severe-dry-eye-disease
#5
Françoise Brignole-Baudouin, Luisa Riancho, Dahlia Ismail, Maëva Deniaud, Mourad Amrane, Christophe Baudouin
Purpose: To investigate correlations of the inflammatory HLA-DR marker with clinical signs and symptoms commonly used to assess dry eye disease (DED) severity. Methods: Baseline data were collected from three clinical studies conducted on moderate to severe DED patients. Characteristics of DED were analyzed and correlations were performed in 311 patients. Data were analyzed after treatment with 1 mg/mL cyclosporine (CsA) and vehicle. We quantified HLA-DR by flow cytometry in impression cytology specimens...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28448663/prame-as-a-potential-target-for-immunotherapy-in-metastatic-uveal-melanoma
#6
Gülçin Gezgin, Sietse J Luk, Jinfeng Cao, Mehmet Dogrusöz, Dirk M van der Steen, Renate S Hagedoorn, Daniëlle Krijgsman, Pieter A van der Velden, Matthew G Field, Gregorius P M Luyten, Karoly Szuhai, J William Harbour, Ekaterina S Jordanova, Mirjam H M Heemskerk, Martine J Jager
Importance: Uveal melanoma (UM) is an intraocular primary malignant neoplasm that often gives rise to metastatic disease for which there are no effective therapies. A substantial proportion of UMs express the cancer-testis antigen PRAME (preferentially expressed antigen in melanoma), which can potentially be targeted by adoptive T-cell therapy. Objective: To determine whether there may be a rationale for PRAME-directed T-cell therapy for metastatic UM. Design, Setting, and Participants: An experimental study using a retrospective cohort of 64 patients with UM (median follow-up, 62 months) was conducted from January 8, 2015, to November 20, 2016, at the Leiden University Medical Center...
April 27, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28448627/engineering-chimeric-human-and-mouse-major-histocompatibility-complex-mhc-class-i-tetramers-for-the-production-of-t-cell-receptor-tcr-mimic-antibodies
#7
Demin Li, Carol Bentley, Jenna Yates, Maryam Salimi, Jenny Greig, Sarah Wiblin, Tasneem Hassanali, Alison H Banham
Therapeutic monoclonal antibodies targeting cell surface or secreted antigens are among the most effective classes of novel immunotherapies. However, the majority of human proteins and established cancer biomarkers are intracellular. Peptides derived from these intracellular proteins are presented on the cell surface by major histocompatibility complex class I (MHC-I) and can be targeted by a novel class of T-cell receptor mimic (TCRm) antibodies that recognise similar epitopes to T-cell receptors. Humoural immune responses to MHC-I tetramers rarely generate TCRm antibodies and many antibodies recognise the α3 domain of MHC-I and β2 microglobulin (β2m) that are not directly involved in presenting the target peptide...
2017: PloS One
https://www.readbyqxmd.com/read/28448594/novel-in-natural-infection-subdominant-hiv-1-cd8-t-cell-epitopes-revealed-in-human-recipients-of-conserved-region-t-cell-vaccines
#8
Nicola Borthwick, Zhansong Lin, Tomohiro Akahoshi, Anuska Llano, Sandra Silva-Arrieta, Tina Ahmed, Lucy Dorrell, Christian Brander, Hayato Murakoshi, Masafumi Takiguchi, Tomáš Hanke
BACKGROUND: Fine definition of targeted CD8+ T-cell epitopes and their human leucocyte antigen (HLA) class I restriction informs iterative improvements of HIV-1 T-cell vaccine designs and may predict early vaccine success or failure. Here, lymphocytes from volunteers, who had received candidate HIVconsv vaccines expressing conserved sub-protein regions of HIV-1, were used to define the optimum-length target epitopes and their HLA restriction. In HIV-1-positive patients, CD8+ T-cell responses predominantly recognize immunodominant, but hypervariable and therefore less protective epitopes...
2017: PloS One
https://www.readbyqxmd.com/read/28447925/luminex-solid-phase-crossmatch-for-de-novo-donor-specific-antibodies-in-living-donor-related-transplants
#9
Sonia Mehrotra, Raj Kumar Sharma, Mahabaleshwar Mayya, Amit Gupta, Narayan Prasad, Anupma Kaul, Dharmendra Singh Bhadauria
OBJECTIVES: There are no reports of de novo donor-specific antibody monitoring by a low-cost solid-phase crossmatch assay using donor lysate after renal transplant. MATERIALS AND METHODS: We prospectively evaluated 121 complement-dependant cytotoxicity crossmatch-negative living-donor kidney transplant recipients for development of de novo donor-specific antibodies (class I and II HLA) by solid-phase crossmatch Luminex assay after transplant. RESULTS: Of 121 recipients in our study group, 26 (21...
April 27, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28446810/pathogenesis-of-ankylosing-spondylitis-recent-advances-and-future-directions
#10
REVIEW
Vidya Ranganathan, Eric Gracey, Matthew A Brown, Robert D Inman, Nigil Haroon
Over the past 5 years, advances in high-throughput techniques and studies involving large cohorts of patients have led to considerable advances in the identification of novel genetic associations and immune pathways involved in ankylosing spondylitis (AS). These discoveries include genes encoding cytokine receptors, transcription factors, signalling molecules and transport proteins. Although progress has been made in understanding the functions and potential pathogenic roles of some of these molecules, much work remains to be done to comprehend their complex interactions and therapeutic potential in AS...
April 27, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28446674/broadening-cd4-and-cd8-t-cell-responses-against-hepatitis-c-virus-by-vaccination-with-ns3-overlapping-peptide-panels-in-cross-priming-liposomes
#11
Jonathan Filskov, Marianne Mikkelsen, Paul R Hansen, Jan P Christensen, Allan R Thomsen, Peter Andersen, Jens Bukh, Else Marie Agger
Despite the introduction of effective drugs to treat patients with chronic hepatitis C virus (HCV) infection, a vaccine would be the only means to substantially reduce the worldwide disease burden. An incomplete understanding of how HCV interacts with its human host and evades immune surveillance has hampered vaccine development. It is generally accepted that in infected individuals, a narrow repertoire of exhausted T cells is a hallmark of persistent infection, whereas broad vigorous CD4(+) and CD8(+) T cell responses are associated with control of acute hepatitis C...
April 26, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28446615/proliferation-of-pd-1-cd8-t-cells-in-peripheral-blood-after-pd-1-targeted-therapy-in-lung-cancer-patients
#12
Alice O Kamphorst, Rathi N Pillai, Shu Yang, Tahseen H Nasti, Rama S Akondy, Andreas Wieland, Gabriel L Sica, Ke Yu, Lydia Koenig, Nikita T Patel, Madhusmita Behera, Hong Wu, Megan McCausland, Zhengjia Chen, Chao Zhang, Fadlo R Khuri, Taofeek K Owonikoko, Rafi Ahmed, Suresh S Ramalingam
Exhausted T cells in chronic infections and cancer have sustained expression of the inhibitory receptor programmed cell death 1 (PD-1). Therapies that block the PD-1 pathway have shown promising clinical results in a significant number of advanced-stage cancer patients. Nonetheless, a better understanding of the immunological responses induced by PD-1 blockade in cancer patients is lacking. Identification of predictive biomarkers is a priority in the field, but whether peripheral blood analysis can provide biomarkers to monitor or predict patients' responses to treatment remains to be resolved...
April 26, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28446606/the-beh%C3%A3-et-s-disease-associated-variant-of-the-aminopeptidase-erap1-shapes-a-low-affinity-hla-b-51-peptidome-by-differential-subpeptidome-processing
#13
Pablo Guasp, Eilon Barnea, M Francisca González-Escribano, Anaïs Jiménez-Reinoso, José R Regueiro, Arie Admon, José A López de Castro
A low activity variant of endoplasmic reticulum aminopeptidase 1 (ERAP1), Hap10, is associated with the autoinflammatory Behcet s disease (BD) in epistasis with HLA-B*51, which is the main risk factor for this disorder. The role of Hap10 in BD pathogenesis is unknown. We sought to define the effects of Hap10 on the HLA-B*51 peptidome and to distinguish these effects from those due to HLA-B*51 polymorphisms unrelated to disease. The peptidome of the BD-associated HLA-B*51:08 subtype expressed in a Hap10-positive cell line was isolated, characterized by mass spectrometry, and compared with the HLA-B*51:01 peptidome from cells expressing more active ERAP1 allotypes...
April 26, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28446305/-establishment-of-mouse-model-of-h-2-haploidentical-hematopoietic-stem-cell-transplantation-from-double-donors
#14
Xiao-Na Wang, Yu-Meng Liang, Lei Deng, Lu Wang, Yi Wang, Ya-Jing Huang, Tie-Qiang Liu, Hong-Li Zuo, Kai-Xun Hu, Jian-Hui Qiao, Qi-Yun Sun, Mei Guo, Hui-Sheng Ai, Chang-Lin Yu
OBJECTIVE: To establish a new mouse model of H-2 haploidentical stem cell transplantation from double donors (DHSCT) and compare with conventional haploidentical hematopoietic stem cell transplantation (HSCT) so as to alleviate transplant-related complications. METHODS: The recipients CB6F1 of conventional HSCT group were pretreated by 8 Gy total body irradiation(TBI), and received 3×10(7) donor (male C57) spleen mononuclear cells (spMNC) mobilized by G-CSF within 2 hours after TBI...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28446286/-salvage-trerapy-for-patients-with-relapsed-and-refractory-lymphoma-by-allogeneic-hematopoietic-stem-cell-transplantation
#15
Yue Yin, Zhi-Xiang Qiu, Yuan Li, Wei-Lin Xu, Yu-Hua Sun, Wei Liu, Wen-Sheng Wang, Mang-Ju Wang, Li-Hong Wang, Yu-Jun Dong, Jin-Ping Ou, Xi-Nan Cen, Han-Yun Ren
OBJECTIVE: To assess the safety and efficacy of allogeneic hematopoietic stem cell transplantation (allo-HSCT) in treating patients with relapsed and refractory lymphoma. METHODS: Thirty-one consecutive patients with relapsed or refractory lymphoma received allo-HSCT. Used conditioning regimens included conditioning based on BEAM regimen(12 cases), conditioning based on modified Bu/Cy regimen(11 cases), conditioning based on Cy/TBI regemen(6 cases) and conditioning of Bu/Cy regimen(1 case)...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28446226/xenotransplantation-of-interferon-gamma-pretreated-clumps-of-a-human-mesenchymal-stem-cell-extracellular-matrix-complex-induces-mouse-calvarial-bone-regeneration
#16
Kei Takeshita, Souta Motoike, Mikihito Kajiya, Nao Komatsu, Manabu Takewaki, Kazuhisa Ouhara, Tomoyuki Iwata, Katsuhiro Takeda, Noriyoshi Mizuno, Tsuyoshi Fujita, Hidemi Kurihara
BACKGROUND: Three-dimensional cultured clumps of a mesenchymal stem cell (MSC)/extracellular matrix (ECM) complex (C-MSC) consists of cells and self-produced ECM. C-MSC can regulate the cellular function in vitro and induce successful bone regeneration using ECM as a cell scaffold. Potentiating the immunomodulatory capacity of C-MSCs, which can ameliorate the allo-specific immune response, may be helpful in developing beneficial "off-the-shelf" cell therapy for tissue regeneration. It is well reported that interferon (IFN)-γ stimulates the immunosuppressive properties of MSC via upregulation of the immunomodulatory enzyme IDO...
April 26, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28445638/antigenic-gm3-lactone-mimetic-molecule-integrated-mannosylated-glycopeptide-nanofibers-for-the-activation-and-maturation-of-dendritic-cells
#17
Gokhan Gunay, Melis Sardan Ekiz, Xhenti Ferhati, Barbara Richichi, Cristina Nativi, Ayse Begum Tekinay, Mustafa O Guler
The ability of dendritic cells to coordinate innate and adaptive immune responses makes them essential targets for vaccination strategies. Presentation of specific antigens by dendritic cells is required for the activation of the immune system against many pathogens, and nanoscale materials can be functionalized for active targeting of dendritic cells. In this work, we integrated an immunogenic, carbohydrate melanoma-associated antigen-mimetic GM3-lactone molecule into mannosylated peptide amphiphile nanofibers to target dendritic cells through DC-SIGN receptor...
April 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28445619/mtor-inhibitors-and-risk-for-chronic-antibody-mediated-rejection-after-kidney-transplantation-where-are-we-now
#18
REVIEW
Philippe Grimbert, Olivier Thaunat
Antibody-mediated rejection (AMR) usually starts with generation of donor-specific anti-HLA antibodies (DSA), arising from a B-cell response to antigen recognition. In vitro and preclinical data demonstrate that mammalian target of rapamycin (mTOR) inhibition attenuates the mTOR-mediated intracellular signaling pathway involved in AMR-related kidney damage. The limited available data from immunological studies in kidney transplant patients, however, have not shown such effects in vivo. In terms of clinical immunosuppression, the overriding influence on rates of de novo DSA (dnDSA) or AMR - regardless of the type of regimen - is patient adherence...
April 26, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28444735/from-genetic-single-candidate-gene-studies-to-complex-genomics-of-gvhd
#19
REVIEW
Katarzyna Bogunia-Kubik, Piotr Łacina
Graft-versus-host disease (GvHD) is a serious complication affecting the recipients of allogeneic haematopoietic stem cells. In this present review we attempt to summarize the current knowledge on the effect of the donor and recipient genotypes on GvHD, starting from human leucocyte antigen (HLA) matching for an optimal donor selection, typing of non-classical HLA and minor histocompatibility antigens through the polymorphic variations in genes coding for non-HLA proteins contributing to the development of GvHD and response to treatment...
April 26, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28444425/pharmacogenetic-markers-to-predict-the-clinical-response-to-methotrexate-in-south-indian-tamil-patients-with-psoriasis
#20
S Indhumathi, Medha Rajappa, Laxmisha Chandrashekar, P H Ananthanarayanan, D M Thappa, V S Negi
INTRODUCTION: Despite the advent of several new systemic therapies, methotrexate remains the gold standard for the treatment of moderate to severe psoriasis. However, there exists a significant heterogeneity in individual response to methotrexate. There are no consistently reliable markers to predict methotrexate treatment response till date. OBJECTIVES: We aimed to demonstrate the association of certain genetic variants in the HLA (HLA-A2, HLA-B17, and HLA-Cw6) and the non-HLA genes including T-helper (Th)-1, Th-2, Th-17 cytokine genes (IFN-γ, IL-2, IL-4, IL-10, IL-12B, and IL-23R), and T-regulatory gene (FOXP3) with the methotrexate treatment response in South Indian Tamil patients with psoriasis...
April 25, 2017: European Journal of Clinical Pharmacology
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