keyword
MENU ▼
Read by QxMD icon Read
search

Chimerism

keyword
https://www.readbyqxmd.com/read/28226268/recent-progress-in-diatom-genomics-and-epigenomics
#1
REVIEW
Leila Tirichine, Achal Rastogi, Chris Bowler
Diatoms are one of the most diverse and successful groups of phytoplankton at the base of the food chain, sustaining life in the ocean and performing vital biogeochemical functions. The last fifteen years have witnessed the comprehensive analysis of several diatom genomes, revealing that they bear traces of their endosymbiotic origins from algal and heterotrophic ancestors, as well as significant gene transfer from bacteria. Their chimeric genomes are further regulated by a range of chromatin-based processes that are characteristic of both plant and animal genomes...
February 19, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28225797/use-of-bovine-recombinant-prion-protein-and-real-time-quaking-induced-conversion-to-detect-cattle-transmissible-mink-encephalopathy-prions-and-discriminate-classical-and-atypical-l-and-h-type-bovine-spongiform-encephalopathy
#2
Soyoun Hwang, Justin J Greenlee, Eric M Nicholson
Prions are amyloid-forming proteins that cause transmissible spongiform encephalopathies through a process involving conversion from the normal cellular prion protein to the pathogenic misfolded conformation (PrPSc). This conversion has been used for in vitro assays including serial protein misfolding amplification and real-time quaking induced conversion (RT-QuIC). RT-QuIC can be used for the detection of prions in a variety of biological tissues from humans and animals. Extensive work has been done to demonstrate that RT-QuIC is a rapid, specific, and highly sensitive prion detection assay...
2017: PloS One
https://www.readbyqxmd.com/read/28225754/targeting-a-car-to-the-trac-locus-with-crispr-cas9-enhances-tumour-rejection
#3
Justin Eyquem, Jorge Mansilla-Soto, Theodoros Giavridis, Sjoukje J C van der Stegen, Mohamad Hamieh, Kristen M Cunanan, Ashlesha Odak, Mithat Gönen, Michel Sadelain
Chimeric antigen receptors (CARs) are synthetic receptors that redirect and reprogram T cells to mediate tumour rejection. The most successful CARs used to date are those targeting CD19 (ref. 2), which offer the prospect of complete remission in patients with chemorefractory or relapsed B-cell malignancies. CARs are typically transduced into the T cells of a patient using γ-retroviral vectors or other randomly integrating vectors, which may result in clonal expansion, oncogenic transformation, variegated transgene expression and transcriptional silencing...
February 22, 2017: Nature
https://www.readbyqxmd.com/read/28224649/sex-chromosomal-abnormalities-associated-with-equine-infertility-validation-of-a-simple-molecular-screening-tool-in-the-purebred-spanish-horse
#4
G Anaya, A Molina, M Valera, M Moreno-Millán, P Azor, P Peral-García, S Demyda-Peyrás
Chromosomal abnormalities in the sex chromosome pair (ECAX and ECAY) are widely associated with reproductive problems in horses. However, a large proportion of these abnormalities remains undiagnosed due to the lack of an affordable diagnostic tool that allows for avoiding karyotyping tests. Hereby, we developed an STR (single-tandem-repeat)-based molecular method to determine the presence of the main sex chromosomal abnormalities in horses in a fast, cheap and reliable way. The frequency of five ECAX-linked (LEX026, LEX003, TKY38, TKY270 and UCDEQ502) and two ECAY-linked (EcaYH12 and SRY) markers was characterized in 261 Purebred Spanish Horses to determine the efficiency of the methodology developed to be used as a chromosomal diagnostic tool...
February 22, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28223987/dendritic-cell-targeting-effectively-boosts-t-cell-responses-elicited-by-an-hiv-multiepitope-dna-vaccine
#5
Juliana de Souza Apostólico, Victória Alves Santos Lunardelli, Marcio Massao Yamamoto, Higo Fernando Santos Souza, Edecio Cunha-Neto, Silvia Beatriz Boscardin, Daniela Santoro Rosa
Despite several efforts in the last decades, an efficacious HIV-1 vaccine is still not available. Different approaches have been evaluated, such as recombinant proteins, viral vectors, DNA vaccines, and, most recently, dendritic cell (DC) targeting. This strategy is based on DC features that place them as central for induction of immunity. Targeting is accomplished by the use of chimeric monoclonal antibodies directed to DC surface receptors fused to the antigen of interest. In this work, we targeted eight promiscuous HIV-derived CD4(+) T cell epitopes (HIVBr8) to the DEC205(+) DCs by fusing the multiepitope immunogen to the heavy chain of αDEC205 (αDECHIVBr8), in the presence of the TLR3 agonist poly (I:C)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28223717/scale-up-and-pharmacokinetic-study-of-a-novel-mutated-chimeric-tissue-plasminogen-activator-mt-pa-in-rats
#6
Mozhgan Raigani, Mohammad-Reza Rouini, Ali-Akbar Golabchifar, Esmat Mirabzadeh, Behrouz Vaziri, Farzaneh Barkhordari, Fatemeh Davami, Fereidoun Mahboudi
Because of high mortality caused by cardiovascular diseases, various fibrinolytic agents with diverse pharmacokinetic and pharmacodynamic properties have been developed. A novel mutated chimeric tissue plasminogen activator (mt-PA) was developed by the removal of first three domains of t-PA, insertion of GHRP sequence and mutation towards resistance to plasminogen activator inhibitor-1 (PAI-1). Mt-PA protein was expressed in Expi293F cells. The expression level of mt-PA was found to be 5000 IU/mL. Following purification, the pharmacokinetic properties of mt-PA were evaluated in three doses in rats...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223456/a-natural-chimeric-pseudomonas-bacteriocin-with-novel-pore-forming-activity-parasitizes-the-ferrichrome-transporter
#7
Maarten G K Ghequire, Lieselore Kemland, Ernesto Anoz-Carbonell, Susan K Buchanan, René De Mot
Modular bacteriocins represent a major group of secreted protein toxins with a narrow spectrum of activity, involved in interference competition between Gram-negative bacteria. These antibacterial proteins include a domain for binding to the target cell and a toxin module at the carboxy terminus. Self-inhibition of producers is provided by coexpression of linked immunity genes that transiently inhibit the toxin's activity through formation of bacteriocin-immunity complexes or by insertion in the inner membrane, depending on the type of toxin module...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28223167/intracavitary-t4-immunotherapy-of-malignant-mesothelioma-using-pan-erbb-re-targeted-car-t-cells
#8
Astero Klampatsa, Daniela Y Achkova, David M Davies, Ana C Parente-Pereira, Natalie Woodman, James Rosekilly, Georgina Osborne, Thivyan Thayaparan, Andrea Bille, Michael Sheaf, James F Spicer, Juliet King, John Maher
Malignant mesothelioma remains an incurable cancer. We demonstrated that mesotheliomas expressed EGFR (79.2%), ErbB4 (49.0%) and HER2 (6.3%), but lacked ErbB3. At least one ErbB family member was expressed in 88% of tumors. To exploit ErbB dysregulation in this disease, patient T-cells were engineered by retroviral transduction to express a panErbB-targeted chimeric antigen receptor (CAR), co-expressed with a chimeric cytokine receptor that allows interleukin (IL)-4 mediated CAR T-cell proliferation. This combination is referred to as T4 immunotherapy...
February 18, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28222796/new-development-in-car-t-cell-therapy
#9
REVIEW
Zhenguang Wang, Zhiqiang Wu, Yang Liu, Weidong Han
Chimeric antigen receptor (CAR)-engineered T cells (CAR-T cells) have yielded unprecedented efficacy in B cell malignancies, most remarkably in anti-CD19 CAR-T cells for B cell acute lymphoblastic leukemia (B-ALL) with up to a 90% complete remission rate. However, tumor antigen escape has emerged as a main challenge for the long-term disease control of this promising immunotherapy in B cell malignancies. In addition, this success has encountered significant hurdles in translation to solid tumors, and the safety of the on-target/off-tumor recognition of normal tissues is one of the main reasons...
February 21, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28220479/a-phase-1-2-trial-of-ublituximab-a-novel-anti-cd20-monoclonal-antibody-in-patients-with-b-cell-non-hodgkin-lymphoma-or-chronic-lymphocytic-leukaemia-previously-exposed-to-rituximab
#10
Ahmed Sawas, Charles M Farber, Marshall T Schreeder, Mazen Y Khalil, Daruka Mahadevan, Changchun Deng, Jennifer E Amengual, Petros G Nikolinakos, Jill M Kolesar, John G Kuhn, Peter Sportelli, Hari P Miskin, Owen A O'Connor
This phase 1/2 study evaluated the safety, pharmacokinetic behavior and anti-tumour activity of ublituximab, a unique type I, chimeric, glycoengineered anti-CD20 monoclonal antibody, in rituximab-relapsed or -refractory patients with B-cell non-Hodgkin lymphoma (B-NHL) or chronic lymphocytic leukaemia (CLL). Induction therapy (doses of 450-1200 mg) consisted of 4 weekly infusions in cycle 1 for NHL and 3 weekly infusions in cycles 1 and 2 for CLL. Patients received ublituximab maintenance monthly during cycles 3-5, then once every 3 months for up to 2 years...
February 21, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28220142/absence-of-an-n-linked-glycosylation-motif-in-the-glycoprotein-of-the-live-attenuated-argentine-hemorrhagic-fever-vaccine-candid-1-results-in-its-improper-processing-and-reduced-surface-expression
#11
John T Manning, Alexey V Seregin, Nadezhda E Yun, Takaaki Koma, Cheng Huang, José Barral, Juan C de la Torre, Slobodan Paessler
Junin virus (JUNV), a highly pathogenic New World arenavirus, is the causative agent of Argentine hemorrhagic fever (AHF). The live-attenuated Candid #1 (Can) strain currently serves as a vaccine for at-risk populations. We have previously shown that the Can glycoprotein (GPC) gene is the primary gene responsible for attenuation in a guinea pig model of AHF. However, the mechanisms through which the GPC contributes to the attenuation of the Can strain remain unknown. A more complete understanding of the mechanisms underlying the attenuation and immunogenicity of the Can strain will potentially allow for the rational design of additional safe and novel vaccines...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28220114/roles-of-the-polymerase-associated-protein-genes-in-newcastle-disease-virus-virulence
#12
Xiao-Hui Yu, Jin-Long Cheng, Jia Xue, Ji-Hui Jin, Yang Song, Jing Zhao, Guo-Zhong Zhang
The virulence of Newcastle disease virus varies greatly and is determined by multiple genetic factors. In this study, we systematically evaluated the roles of the polymerase-associated (NP, P and L) protein genes in genotype VII NDV virulence after confirming the envelope-associated (F and HN) proteins contributed greatly to NDV virulence. The results revealed that the polymerase-associated protein genes individually had certain effect on virulence, while transfer of these three genes in combination significantly affected the chimeric virus virulence, especially when the L gene was involved...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28219834/incidence-and-outcomes-of-central-nervous-system-hemophagocytic-lymphohistiocytosis-relapse-after-reduced-intensity-conditioning-hematopoietic-stem-cell-transplant
#13
Dana T Lounder, Pooja Khandelwal, Sharat Chandra, Michael B Jordan, Ashish R Kumar, Michael Grimley, Stella M Davies, Jack J Bleesing, Rebecca A Marsh
Hemophagocytic Lymphohistiocytosis (HLH) is an immune regulatory disorder that commonly presents with CNS involvement. The only cure for genetic HLH is hematopoietic stem cell transplantation (HSCT), typically treated with reduced intensity conditioning (RIC) regimens. We sought to estimate the incidence of CNS relapse after RIC HSCT, determine risk factors, and evaluate outcomes. We performed a retrospective chart review of 94 consecutive children and young adults with primary HLH who received RIC HSCT. CNS relapse within 1 year after transplant was diagnosed by review of clinical symptoms, cerebral spinal fluid (CSF), and radiologic findings...
February 17, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28218619/muscular-dystrophy-meets-protein-biochemistry-the-mother-of-invention
#14
Steven D Funk, Jeffrey H Miner
Muscular dystrophies result from a defect in the linkage between the muscle fiber cytoskeleton and the basement membrane (BM). Congenital muscular dystrophy type MDC1A is caused by mutations in laminin α2 that either reduce its expression or impair its ability to polymerize within the muscle fiber BM. Defects in this BM lead to muscle fiber damage from the force of contraction. In this issue of the JCI, McKee and colleagues use a laminin polymerization-competent, designer chimeric BM protein in vivo to restore function of a polymerization-defective laminin, leading to normalized muscle structure and strength in a mouse model of MDC1A...
February 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28218617/chimeric-protein-repair-of-laminin-polymerization-ameliorates-muscular-dystrophy-phenotype
#15
Karen K McKee, Stephanie C Crosson, Sarina Meinen, Judith R Reinhard, Markus A Rüegg, Peter D Yurchenco
Mutations in laminin α2-subunit (Lmα2, encoded by LAMA2) are linked to approximately 30% of congenital muscular dystrophy cases. Mice with a homozygous mutation in Lama2 (dy2J mice) express a nonpolymerizing form of laminin-211 (Lm211) and are a model for ambulatory-type Lmα2-deficient muscular dystrophy. Here, we developed transgenic dy2J mice with muscle-specific expression of αLNNd, a laminin/nidogen chimeric protein that provides a missing polymerization domain. Muscle-specific expression of αLNNd in dy2J mice resulted in strong amelioration of the dystrophic phenotype, manifested by the prevention of fibrosis and restoration of forelimb grip strength...
February 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28218274/trapping-of-ivermectin-by-a-pentameric-ligand-gated-ion-channel-upon-open-to-closed-isomerization
#16
Nurit Degani-Katzav, Moshe Klein, Moran Har-Even, Revital Gortler, Ruthi Tobi, Yoav Paas
Ivermectin (IVM) is a broad-spectrum anthelmintic drug used to treat human parasitic diseases like river blindness and lymphatic filariasis. By activating invertebrate pentameric glutamate-gated chloride channels (GluCl receptors; GluClRs), IVM induces sustained chloride influx and long-lasting membrane hyperpolarization that inhibit neural excitation in nematodes. Although IVM activates the C. elegans heteromeric GluClα/β receptor, it cannot activate a homomeric receptor composed of the C. elegans GluClβ subunits...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28217006/mutagenesis-and-tilling-to-dissect-gene-function-in-plants
#17
Zerihun Tadele
Mutagenesis can be random or targeted and occur by nature or artificially by humans. However, the bulk of mutagenesis employed in plants are random and caused by physical agents such as x-ray and gamma-ray or chemicals such as ethyl-methane sulfonate (EMS). Researchers are interested in first identifying these mutations and/or polymorphisms in the genome followed by investigating their effects in the plant function as well as their application in crop improvement. The high-throughput technique called TILLING (Targeting Induced Local Lesion IN Genomes) has been already established and become popular for identifying candidate mutant individuals harboring mutations in the gene of interest...
December 2016: Current Genomics
https://www.readbyqxmd.com/read/28216262/efis-lecture-understanding-the-ctla-4-checkpoint-in-the-maintenance-of-immune-homeostasis
#18
REVIEW
Lucy S K Walker
The past 20 years have heralded fascinating developments in the field of CTLA-4 biology. The CTLA-4 protein is a critical negative regulator of T cell immunity and its absence provokes severe lymphoproliferative disease. In a surprising twist, the generation of mixed bone marrow chimeric mice revealed that CTLA-4 predominantly functions in a cell-extrinsic manner, suggesting that CTLA-4 expressed on one cell can modify the behaviour of another cell. This was followed by the demonstration that CTLA-4 is highly expressed in regulatory T cells and can contribute to their suppressive activity...
February 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28215040/who-should-receive-a-transplant-for-acute-lymphoblastic-leukaemia
#19
REVIEW
Rishi Dhawan, David I Marks
Allogeneic haematopoietic cell transplantation continues to be an important curative therapy for acute lymphoblastic leukaemia (ALL). Traditionally accepted indications for allografting adult ALL patients need reevaluation in light of outcomes with paediatric-like intensive regimens. Minimal residual disease status and oncogenetics can be used for restratification of standard risk patients. A greater body of data on haematopoietic cell transplantation (HCT) outcomes from haploidentical and cord blood donor sources has been generated in recent years...
February 18, 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/28214023/using-aequorin-probes-to-measure-ca-2-in-intracellular-organelles
#20
REVIEW
María Teresa Alonso, Macarena Rodríguez-Prados, Paloma Navas-Navarro, Jonathan Rojo-Ruiz, Javier García-Sancho
Aequorins are excellent tools for measuring intra-organellar Ca(2+) and assessing its role in physiological and pathological functions. Here we review targeting strategies to express aequorins in various organelles. We address critical topics such as probe affinity tuning as well as normalization and calibration of the signal. We also focus on bioluminescent Ca(2+) imaging in nucleus or mitochondria of living cells. Finally, recent advances with a new chimeric GFP-aequorin protein (GAP), which can be used either as luminescent or fluorescent Ca(2+) probe, are presented...
January 16, 2017: Cell Calcium
keyword
keyword
4443
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"