keyword
MENU ▼
Read by QxMD icon Read
search

Neoepitope

keyword
https://www.readbyqxmd.com/read/28698575/dual-non-contiguous-peptide-occupancy-of-hla-class-i-evoke-antiviral-human-cd8-t-cell-response-and-form-neo-epitopes-with-self-antigens
#1
Ziwei Xiao, Zhiyong Ye, Vikeramjeet Singh Tadwal, Meixin Shen, Ee Chee Ren
Host CD8 T cell response to viral infections involves recognition of 8-10-mer peptides presented by MHC-I molecules. However, proteasomes generate predominantly 2-7-mer peptides, but the role of these peptides is largely unknown. Here, we show that single short peptides of <8-mer from Latent Membrane Protein 2 (LMP2) of Epstein Barr Virus (EBV) can bind HLA-A*11:01 and stimulate CD8(+) cells. Surprisingly, two peptide fragments between 4-7-mer derived from LMP2(340-349) were able to complement each other, forming combination epitopes that can stimulate specific CD8(+) T cell responses...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28689920/relationship-between-weight-loss-in-obese-knee-osteoarthritis-patients-and-serum-biomarkers-of-cartilage-breakdown-secondary-analyses-of-a-randomised-trial
#2
E M Bartels, Y Henrotin, H Bliddal, P Centonze, M Henriksen
OBJECTIVE: To explore effects of weight loss and maintenance on serum cartilage biomarkers denaturation neoepitope for Collagen2 (Coll2-1) and Fibulin3 fragment (Fib3-2), as well as correlations between Coll2-1 and Fib3-2 and symptomatic improvement, in a knee osteoarthritis (KOA) population. DESIGN: 192 obese KOA patients followed a 16 week weight loss intervention and 52 weeks weight maintenance (ClinicalTrials.gov identifier: NCT00655941). Assessments were at 0, 8, 16 and 68 weeks...
July 6, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28642243/anti-inflammatory-and-anti-osteoarthritis-effects-of-tectorigenin
#3
Cheng-Long Wang, De Li, Chuan-Dong Wang, Fei Xiao, Jun-Feng Zhu, Chao Shen, Bin Zuo, Yi-Min Cui, Hui Wang, Yuan Gao, Guo-Li Hu, Xiao-Ling Zhang, Xiao-Dong Chen
Osteoarthritis (OA) is a common and dynamic joint disease, including the articular cartilage, underlying bones, and synovium. In particular, OA is considered as the degeneration of the cartilage. Tectorigenin (Tec) can affect many biological processes. However, its effect on articular chondrocytes remains unclear. This study aimed to assess the role of Tec in articular cartilage. In vitro, Tec inhibited the expression levels of type X collagen, cyclooxigenase-2, matrix metalloproteinase (MMP)-3, and MMP-13 gene but enhanced those of Runx1, type II collagen, and aggrecan in the presence of IL-1β...
June 22, 2017: Biology Open
https://www.readbyqxmd.com/read/28637898/activation-of-complement-by-pigment-epithelium-derived-factor-in-rheumatoid-arthritis
#4
Leonie M Vogt, Simone Talens, Ewa Kwasniewicz, Carsten Scavenius, André Struglics, Jan J Enghild, Tore Saxne, Anna M Blom
The aim of this study was to identify molecules that trigger complement activation in rheumatic joints. C4d, the final cleavage product of C4 activation, is found in the diseased joint and can bind covalently to complement-activating molecules. By using a highly specific Ab against a cleavage neoepitope in C4d, several molecules that were specifically bound to C4d were identified from pooled synovial fluid (SF) from four rheumatoid arthritis (RA) patients. One of these molecules, pigment epithelium-derived factor (PEDF), is a broadly expressed multifunctional member of the serine proteinase inhibitor family...
June 21, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28629465/natural-igm-antibodies-that-bind-neoepitopes-exposed-as-a-result-of-spinal-cord-injury-drive-secondary-injury-by-activating-complement
#5
Aarti Narang, Fei Qiao, Carl Atkinson, Hong Zhu, Xiaofeng Yang, Liudmila Kulik, V Michael Holers, Stephen Tomlinson
BACKGROUND: Natural IgM antibodies (Abs) function as innate immune sensors of injury via recognition of neoepitopes expressed on damaged cells, although how this recognition systems function following spinal cord injury (SCI) exposes various neoepitopes and their precise nature remains largely unknown. Here, we investigated the role of two natural IgM monoclonal Abs (mAbs), B4 and C2, that recognize post-ischemic neoepitopes following ischemia and reperfusion in other tissues. METHODS: Identification of post-SCI expressed neoepitopes was examined using previously characterized monoclonal Abs (B4 and C2 mAbs)...
June 19, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28610663/eculizumab-c5-complexes-express-a-c5a-neoepitope-in-vivo-consequences-for-interpretation-of-patient-complement-analyses
#6
Per H Nilsson, Anub Mathew Thomas, Grethe Bergseth, Alice Gustavsen, Elena B Volokhina, Lambertus P van den Heuvel, Andreas Barratt-Due, Tom E Mollnes
The complement system has obtained renewed clinical focus due to increasing number of patients treated with eculizumab, a monoclonal antibody inhibiting cleavage of C5 into C5a and C5b. The FDA approved indications are paroxysmal nocturnal haemoglobinuria and atypical haemolytic uremic syndrome, but many other diseases are candidates for complement inhibition. It has been postulated that eculizumab does not inhibit C5a formation in vivo, in contrast to what would be expected since it blocks C5 cleavage. We recently revealed that this finding was due to a false positive reaction in a C5a assay...
June 10, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28601068/prevalence-of-autoantibodies-against-3-dg-glycated-h2a-protein-in-type-2-diabetes
#7
J M Ashraf, S M S Abdullah, S Ahmad, S Fatma, M H Baig, J Iqbal, A M Madkhali, A B A Jerah
Advanced glycation end-products (AGEs) have been found to be critically involved in initiation or progression of diabetes secondary complications (nephropathy, retinopathy, neuropathy, and angiopathy). Various hyper-glycating carbonyl compounds such as 3-deoxyglucosone (3-DG) are produced in pathophysiological conditions that form AGEs in high quantity both in vivo and in vitro. In the first stage of this study, we glycated histone H2A protein by 3-DG, and the results showed the formation of various intermediates and AGEs as well as structural changes in the protein...
May 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28572258/immunotherapy-for-breast-cancer-what-are-we-missing
#8
EDITORIAL
Robert H Vonderheide, Susan M Domchek, Amy S Clark
The recent demonstration of modest single-agent activity of programmed death-ligand 1 (PD-L1) and programmed death receptor-1 (PD-1) antibodies in patients with breast cancer has generated hope that breast cancer can be made amenable to immunotherapy. Depending on the subtype of breast cancer, it is now clear in both primary and metastatic disease that the extent of tumor-infiltrating T cells is not only prognostic for survival but predictive of response to nonimmune, standard therapies. Despite these findings, immune cytolytic activity in spontaneous breast tumors, the burden of nonsynonymous tumor mutations, and the predicted load of neoepitopes-factors linked to response to checkpoint blockade in other malignancies-are all relatively modest in breast cancer compared with melanoma or lung cancer...
June 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28536262/in-silico-and-cell-based-analyses-reveal-strong-divergence-between-prediction-and-observation-of-t-cell-recognized-tumor-antigen-t-cell-epitopes
#9
Julien Schmidt, Philippe Guillaume, Danijel Dojcinovic, Julia Karbach, George Coukos, Immanuel Luescher
Tumor exomes provide comprehensive information on mutated, overexpressed genes and aberrant splicing, which can be exploited for personalized cancer immunotherapy. Of particular interest are mutated tumor antigen T-cell epitopes, because neoepitope-specific T cells often are tumoricidal. However, identifying tumor-specific T-cell epitopes is a major challenge. A widely used strategy relies on initial prediction of human leukocyte antigen-binding peptides by in silico algorithms, but the predictive power of this approach is unclear...
July 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28533942/hla-a24-ligandome-analysis-of-colon-and-lung-cancer-cells-identifies-a-novel-cancer-testis-antigen-and-a-neoantigen-that-elicits-specific-and-strong-ctl-responses
#10
Vitaly Kochin, Takayuki Kanaseki, Serina Tokita, Sho Miyamoto, Yosuke Shionoya, Yasuhiro Kikuchi, Daichi Morooka, Yoshihiko Hirohashi, Tomohide Tsukahara, Kazue Watanabe, Shingo Toji, Yasuo Kokai, Noriyuki Sato, Toshihiko Torigoe
This study focused on HLA-A24 and comprehensively analyzed the ligandome of colon and lung cancer cells without the use of MHC-binding in silico prediction algorithms. Affinity purification using the antibody specific to HLA-A24 followed by LC-MS/MS sequencing was used to detect peptides, which harbored the known characteristics of HLA-A24 peptides in terms of length and anchor motifs. Ligandome analysis demonstrated the natural presentation of two different types of novel tumor-associated antigens. The ligandome contained a peptide derived from SUV39H2, a gene found to be expressed in a variety of cancers but not in normal tissues (except for the testis)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28526919/antibodies-to-post-translationally-modified-insulin-as-a-novel-biomarker-for-prediction-of-type-1-diabetes-in-children
#11
Rocky Strollo, Chiara Vinci, Nicola Napoli, Paolo Pozzilli, Johnny Ludvigsson, Ahuva Nissim
AIMS/HYPOTHESIS: We have shown that autoimmunity to insulin in type 1 diabetes may result from neoepitopes induced by oxidative post-translational modifications (oxPTM). Antibodies specific to oxPTM-insulin (oxPTM-INS-Ab) are present in most newly diagnosed individuals with type 1 diabetes and are more common than autoantibodies to native insulin. In this study, we investigated whether oxPTM-INS-Ab are present before clinical onset of type 1 diabetes, and evaluated the ability of oxPTM-INS-Ab to identify children progressing to type 1 diabetes...
August 2017: Diabetologia
https://www.readbyqxmd.com/read/28511649/il-10-ameliorates-tnf-%C3%AE-induced-meniscus-degeneration-in-mature-meniscal-tissue-in-vitro
#12
P Behrendt, K Häfelein, A Preusse-Prange, A Bayer, A Seekamp, B Kurz
BACKGROUND: Joint inflammation causes meniscus degeneration and can exacerbate post-traumatic meniscus injuries by extracellular matrix degradation, cellular de-differentiation and cell death. The aim of this study was to examine whether anti-inflammatory interleukin-10 exerts protective effects in an in vitro model of TNF-α-induced meniscus degeneration. METHODS: Meniscus tissue was harvested from the knees of adult cows. After 24 h of equilibrium explants were simultaneously treated with bovine TNF-α and IL-10...
May 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28473443/relationship-of-autoantibodies-to-mda-ldl-and-apob-immune-complexes-to-sex-ethnicity-subclinical-atherosclerosis-and-cardiovascular-events
#13
COMPARATIVE STUDY
Anand Prasad, Paul Clopton, Colby Ayers, Amit Khera, James A de Lemos, Joseph L Witztum, Sotirios Tsimikas
OBJECTIVE: Modifications of lipid constituents within atherosclerotic lesions generate neoepitopes that activate innate and adaptive immune responses. We aimed to define the prevalence, distribution, and relationship of autoantibody titers of oxidized lipoproteins to subclinical atherosclerosis and major adverse cardiovascular events (MACE) in different ethnic groups. APPROACH AND RESULTS: IgG and IgM autoantibodies to malondialdehyde-modified low-density lipoprotein (MDA-LDL) and apolipoprotein B-100-immune complexes were measured in 3509 individuals (1814 blacks, 1031 whites, 589 Hispanics, and 85 no race identifier) from the Dallas Heart Study with median 10...
June 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28473207/quantification-of-cartilage-oligomeric-matrix-protein-comp-and-a-comp-neoepitope-in-synovial-fluid-of-patients-with-different-joint-disorders-by-novel-automated-assays
#14
P Lorenzo, A Aspberg, T Saxne, P Önnerfjord
OBJECTIVE: To develop automated immunoassays for the quantification of Cartilage Oligomeric Matrix Protein (COMP) and a COMP neoepitope in synovial fluid and to investigate their diagnostic potential in different joint conditions. METHODS: Two sandwich immunoassays were developed for the quantification of COMP and a COMP neoepitope, using an automated analyser (IDS-iSYS, Immunodiagnostic Systems, Boldon, UK). Assay performance was evaluated in terms of sensitivity, recovery, linearity, and intra- and inter-assay precision...
May 2, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28431875/proteins-oxidation-and-autoantibodies-reactivity-against-hydrogen-peroxide-and-malondialdehyde-oxidized-thyroid-antigens-in-patients-plasmas-with-graves-disease-and-hashimoto-thyroiditis
#15
Malek Mseddi, Riadh Ben Mansour, Bochra Gargouri, Fatma Mnif, Samir El Ghawi, Boutheina Hammami, Abdelmonem Ghorbel, Mohamed Abid, Saloua Lassoued
The aim of this study was to evaluate proteins oxidation in plasmas of two autoimmune thyroid diseases (AITD): Graves' disease (GD) and Hashimoto Thyroiditis (HT), and to determine whether oxidative modification of thyroid antigens (T.Ag) enhanced the reactivity of autoantibodies in plasmas of AITD patients compared with the reactivity towards native T.Ag. Carbonyl and thiol groups and MDA-protein adducts were assessed spectrophotometric methods in plasmas of 74 AITD patients and 65 healthy controls. The reactivities immunoglobulin (Ig)G autoantibodies towards malondialdéhyde (MDA)-modified T...
June 25, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28380609/age-related-effects-on-markers-of-inflammation-and-cartilage-metabolism-in-response-to-an-intra-articular-lipopolysaccharide-challenge-in-horses
#16
M K Kahn, J A Coverdale, J L Leatherwood, C E Arnold, R A Dabareiner, A N Bradbery, A A Millican, T H Welsh
Eighteen Quarter Horses were used in a randomized complete design for a 28-d experiment to evaluate age-related effects on inflammation and cartilage turnover after induction of a single inflammatory insult using lipopolysaccharide (LPS). Horses were grouped by age as yearlings (3 males and 3 females), 2 to 3 yr olds (2/3 yr old; 2 males and 4 females), and skeletally mature 5 to 8 yr olds (mature; 2 males and 4 females). On d 0, all horses were individually housed and fed diets that met or exceeded requirements...
February 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28349070/diabetes-is-associated-with-increased-autoreactivity-of-mannan-binding-lectin
#17
Esben Axelgaard, Jakob Appel Østergaard, Steffen Thiel, Troels Krarup Hansen
Mannan-binding lectin (MBL) has been reported to be involved in the pathophysiology of diabetic nephropathy. MBL is a pattern-recognition molecule of the innate immune system that initiates the lectin pathway of the complement system upon recognition of evolutionary conserved pathogen-associated molecular patterns or to altered self-tissue. Our group have previously shown direct effects of MBL on diabetes-induced kidney damage, and we hypothesized that MBL may cause autoactivation of the complement system via binding to neoepitopes induced by hyperglycemia...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28303769/neoepitopes-as-cancer-immunotherapy-targets-key-challenges-and-opportunities
#18
REVIEW
Cory A Brennick, Mariam M George, William L Corwin, Pramod K Srivastava, Hakimeh Ebrahimi-Nik
Over the last half century, it has become well established that cancers can elicit a host immune response that can target them with high specificity. Only within the last decade, with the advances in high-throughput gene sequencing and bioinformatics approaches, are we now on the forefront of harnessing the host's immune system to treat cancer. Recently, some strides have been taken toward understanding effective tumor-specific MHC I restricted epitopes or neoepitopes. However, many fundamental questions still remain to be addressed before this therapy can live up to its full clinical potential...
March 2017: Immunotherapy
https://www.readbyqxmd.com/read/28280852/tantigen-a-comprehensive-database-of-tumor-t-cell-antigens
#19
Lars Rønn Olsen, Songsak Tongchusak, Honghuang Lin, Ellis L Reinherz, Vladimir Brusic, Guang Lan Zhang
Tumor T cell antigens are both diagnostically and therapeutically valuable molecules. A large number of new peptides are examined as potential tumor epitopes each year, yet there is no infrastructure for storing and accessing the results of these experiments. We have retroactively cataloged more than 1000 tumor peptides from 368 different proteins, and implemented a web-accessible infrastructure for storing and accessing these experimental results. All peptides in TANTIGEN are labeled as one of the four categories: (1) peptides measured in vitro to bind the HLA, but not reported to elicit either in vivo or in vitro T cell response, (2) peptides found to bind the HLA and to elicit an in vitro T cell response, (3) peptides shown to elicit in vivo tumor rejection, and (4) peptides processed and naturally presented as defined by physical detection...
March 9, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28257957/the-cancer-immunity-cycle-as-rational-design-for-synthetic-cancer-drugs-novel-dc-vaccines-and-car-t-cells
#20
REVIEW
Mohanraj Ramachandran, Anna Dimberg, Magnus Essand
Cell therapy is an advanced form of cancer immunotherapy that has had remarkable clinical progress in the past decade in the search for cure of cancer. Most success has been achieved for chimeric antigen receptor (CAR) T-cells where CAR T-cells targeting CD19 show very high complete response rates for patients with refractory acute B-cell acute lymphoblastic leukemia (ALL) and are close to approval for this indication. CD19 CAR T-cells are also effective against B-cell chronic lymphoblastic leukemia (CLL) and B-cell lymphomas...
February 28, 2017: Seminars in Cancer Biology
keyword
keyword
93304
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"