156,392 results match your criteria cell cloning

Preparation of the peroxisome proliferator-activated receptor α polyclonal antibody: Its application in fatty liver hemorrhagic syndrome.

Int J Biol Macromol 2021 Apr 7. Epub 2021 Apr 7.

Jiangxi Provincial Key Laboratory for Animal Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, China. Electronic address:

Peroxisome proliferator-activated receptor α (PPARα) play a key role in the regulation of metabolic homeostasis, inflammation, cellular growth, and differentiation. To further explore the potential role of PPARα in the energy homeostasis of fatty liver hemorrhagic syndrome (FLHS), we reported the prokaryotic expression and purification of chicken PPARα subunit protein, and successfully prepared a polyclonal antibody against PPARα recombinant protein. The 987 bp PPARα subunit genes were cloned into the pEASY-T3 clone vector. Read More

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FABP5 enhances malignancies of lower-grade gliomas via canonical activation of NF-κB signaling.

J Cell Mol Med 2021 Apr 9. Epub 2021 Apr 9.

Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.

Low-grade gliomas (LGGs) are grade III gliomas based on the WHO classification with significant genetic heterogeneity and clinical properties. Traditional histological classification of gliomas has been challenged by the improvement of molecular stratification; however, the reproducibility and diagnostic accuracy of LGGs classification still remain poor. Herein, we identified fatty acid binding protein 5 (FABP5) as one of the most enriched genes in malignant LGGs and elevated FABP5 revealed severe outcomes in LGGs. Read More

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Development of p53 Knockout U87MG Cell Line for Unbiased Drug Delivery Testing System Using CRISPR-Cas9 and Transcriptomic Analysis.

J Biotechnol 2021 Apr 6. Epub 2021 Apr 6.

RIKEN Center for Integrative Medical Sciences, Japan. Electronic address:

Antibody-drug conjugates offers many advantages as a drug delivery platform that allows for highly specific targeting of cell types and genes. Ideally, testing the efficacy of these systems requires two cell types to be different only in the gene targeted by the drug, with the rest of the cellular machinery unchanged, in order to minimize other potential differences from obscuring the effects of the drug. In this study, we created multiple variants of U87MG cells with targeted mutation in the TP53 gene using the CRISPR-Cas9 system, and determined that their major transcriptional differences stem from the loss of p53 function. Read More

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increased drought resistance 1 Mutation Increases Drought Tolerance Of Upland Rice By Altering Physiological And Morphological Traits And Limiting ROS Levels.

Plant Cell Physiol 2021 Apr 9. Epub 2021 Apr 9.

College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China.

To discover new mutants conferring enhanced tolerance to drought stress, we screened a mutagenized upland rice (O. sativa) population (cv. IAPAR9) and identified a mutant, named idr1-1 (increased drought resistance 1-1), with obviously increased drought tolerance under upland field conditions. Read More

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Mutation Types of CYP71P1 Cause Different Phenotypes of Mosaic Spot Lesion and Premature Leaf Senescence in Rice.

Front Plant Sci 2021 23;12:641300. Epub 2021 Mar 23.

National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.

Lesion mimic mutants (LMMs) are ideal materials for studying programmed cell death and defense response in plants. Here we report investigations on two LMMs ( and ) from the indica rice cultivar JG30 treated by ethyl methyl sulfone. Both of the mutants showed similar mosaic spot lesions at seedling stage, but they displayed different phenotypes along with development of the plants. Read More

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Response to Comment on "Tumor-initiating cells establish an IL-33-TGF-β niche signaling loop to promote cancer progression".

Science 2021 Apr;372(6538)

Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, OR 97239, USA.

Kamphuis argue that macrophages accumulated in the proximity of tumor-initiating cells do not express the high-affinity immunoglobulin E receptor FcεRIα. Although we cannot exclude the possibility of nonspecific binding of anti-FcεRIα antibody (clone MAR-1), we provide evidence that macrophages in squamous cell carcinomas express FcεRIα and that IL-33 induces FcεRIα expression in bone marrow cell-derived macrophages. Read More

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HCV genome-wide analysis for development of efficient culture systems and unravelling of antiviral resistance in genotype 4.

Gut 2021 Apr 8. Epub 2021 Apr 8.

Copenhagen Hepatitis C Program (CO-HEP), Department of Infectious Diseases, Hvidovre Hospital and Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

Objective: HCV-genotype 4 infections are a major cause of liver diseases in the Middle East/Africa with certain subtypes associated with increased risk of direct-acting antiviral (DAA) treatment failures. We aimed at developing infectious genotype 4 cell culture systems to understand the evolutionary genetic landscapes of antiviral resistance, which can help preserve the future efficacy of DAA-based therapy.

Design: HCV recombinants were tested in liver-derived cells. Read More

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Functional characterization of CD4+ T-cell receptors cross-reactive for SARS-CoV-2 and endemic coronaviruses.

J Clin Invest 2021 Apr 8. Epub 2021 Apr 8.

The Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, United States of America.

Background: Recent studies have reported T cell immunity to the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in unexposed donors, possibly due to cross-recognition by T-cells specific for common cold coronaviruses (CCCs). True T-cell cross-reactivity, defined as the recognition by a single TCR of more than one distinct peptide-MHC ligand, has never been shown in the context of SARS-CoV-2.

Methods: We used the ViraFEST platform to identify T cell responses cross-reactive for the spike (S) glycoproteins of SARS-CoV-2 and CCCs at the T cell receptor (TCR) clonotype level in convalescent COVID-19 patients (CCPs) and SARS-CoV-2-unexposed donors. Read More

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Structural glycoprotein E2 of classical swine fever virus critically interacts with host protein Torsin-1A during the virus infectious cycle.

J Virol 2021 Apr 7. Epub 2021 Apr 7.

Plum Island Animal Disease Center, ARS, USDA, Greenport, NY 11944, USA.

The classical swine fever virus (CSFV) glycoprotein E2 is the major structural component of the virus particle. E2 is involved in several functions such as virus adsorption to the cell, the elicitation of protective immune responses, and virus virulence in swine. Using a yeast two-hybrid system, we previously identified the swine host protein Torsin-1A, an ATPase protein residing in the endoplasmic reticulum and inner nucleus membrane of the cell, as a specific binding partner for E2. Read More

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SPL36 Encodes a Receptor-like Protein Kinase that Regulates Programmed Cell Death and Defense Responses in Rice.

Rice (N Y) 2021 Apr 7;14(1):34. Epub 2021 Apr 7.

State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006, China.

Lesion mimic mutants spontaneously produce disease spots in the absence of biotic or abiotic stresses. Analyzing lesion mimic mutants' sheds light on the mechanisms underlying programmed cell death and defense-related responses in plants. Here, we isolated and characterized the rice (Oryza sativa) spotted leaf 36 (spl36) mutant, which was identified from an ethyl methanesulfonate-mutagenized japonica cultivar Yundao population. Read More

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Monoclonal gammopathy of renal significance: Early diagnosis is key.

Nefrologia 2021 Apr 3. Epub 2021 Apr 3.

Nephrology Department, Carlos Haya Regional University Hospital and University of Malaga, IBIMA, REDinREN (RD16/0009/0006), Malaga, Spain. Electronic address:

Monoclonal gammopathy of renal significance is a clinical-pathological entity grouping renal disorders secondary to the secretion of a monoclonal immunoglobulin synthesized by a B-cell-derived clone and/or plasma cells in a patient with no diagnostic criteria for multiple myeloma. This term applies to a concept recently introduced owing to the need to differentiate this entity from monoclonal gammopathy of undetermined significance, given the negative prognostic impact of its high morbidity and mortality resulting from both renal and systemic involvement, occasionally even progressing to advanced chronic kidney disease. The renal damage occurs via both direct pathogenic mechanisms, with the deposition of the monoclonal protein in different renal structures, as well as indirect mechanisms, acting as an autoantibody provoking dysregulation of the alternative complement pathway. Read More

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Relative abundance of pluripotency-associated candidate genes in immature oocytes and -produced buffalo embryos ().

Zygote 2021 Apr 5:1-9. Epub 2021 Apr 5.

Animal Biotechnology Centre, National Dairy Research Institute, Karnal132001, Haryana, India.

The present study was undertaken to analyze the relative abundance (RA) of pluripotency-associated genes (NANOG, OCT4, SOX2, c-MYC, and FOXD3) in different grades of immature oocytes and various stages of in vitro-produced buffalo embryos using RT-qPCR. Results showed that the RA of NANOG, OCT4, and FOXD3 transcripts was significantly higher (P < 0.05) in A grade oocytes compared with the other grades of oocytes. Read More

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Inhibition of lncRNA LINC00461/miR-216a/aquaporin 4 pathway suppresses cell proliferation, migration, invasion, and chemoresistance in glioma.

Open Life Sci 2020 27;15(1):532-543. Epub 2020 Jul 27.

Department of neurosurgery, The Affiliated Mindong Hospital of Fujian Medical University, No. 89 Heshan Road, Fuan 355000, Fujian, China.

Long noncoding RNA (lncRNA) LINC00461 (LINC00461) is reported to be related to glioma progression. However, the mechanism of LINC00461 in glioma remains unclear. Expression of LINC00461, miRNA (miR)-216a, and aquaporin 4 (AQP4) was detected using real-time quantitative PCR (RT-qPCR) and western blotting. Read More

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MiRNA-145 Induces Apoptosis in a Gallbladder Carcinoma Cell Line by Targeting DFF45.

Open Life Sci 2018 Jan 5;13:227-235. Epub 2018 Jul 5.

Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.

Bakcground: We measured expression of miRNA-145 in gallbladder carcinoma and its influence on propagation, invasion, and apoptosis of gallbladder carcinoma cells in vitro.

Methods: miRNA-145 expression was compared between normal gallbladder epithelial cells and GBS-SD (gallbladder series) cells using miRNA chip technology. Propagation, apoptosis, and invasion properties of each cell group were tested using MTT, a clone-formation assay, flow cytometry, Western blot, and Transwell assays. Read More

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January 2018

The long non-coding RNA SNHG4/microRNA-let-7e/KDM3A/p21 pathway is involved in the development of non-small cell lung cancer.

Mol Ther Oncolytics 2021 Mar 25;20:634-645. Epub 2020 Dec 25.

Department of Respiratory Medicine, Linyi People's Hospital, Linyi 276000, Shandong Province, P.R. China.

Non-small cell lung cancer (NSCLC) is a foremost cause of malignancy-associated mortality globally. Recent studies have emphasized long non-coding RNAs (lncRNAs) as important biomarkers with diagnostic and therapeutic potential in regard to NSCLC. This study aimed to elucidate the functional role of lncRNA small nucleolar RNA host gene 4 (SNHG4) in NSCLC. Read More

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The Role of miR-31-5p in the Development of Intervertebral Disc Degeneration and Its Therapeutic Potential.

Front Cell Dev Biol 2021 18;9:633974. Epub 2021 Mar 18.

Department of Orthopaedics, The Third Xiangya Hospital of Central South University, Changsha, China.

Intervertebral disc degeneration (IDD) refers to the abnormal response of cell-mediated progressive structural failure. In order to understand the molecular mechanism of the maintenance and destruction of the intervertebral disc, new IDD treatment methods are developed. Here, we first analyzed the key regulators of IDD through microRNAs microarrays. Read More

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Farfantepenaeus gene-encoded antimicrobial peptides: identification, molecular characterization and gene expression in response to fungal infections.

J Invertebr Pathol 2021 Apr 1:107586. Epub 2021 Apr 1.

Laboratory of Immunology Applied to Aquaculture, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil. Electronic address:

The aim of this study was to identify and characterize, at the molecular and transcriptional levels, sequences encoding the different members of the four families of shrimp antimicrobial peptides (AMPs) in species of the genus Farfantepenaeus. The identification of the AMP sequences was performed by in silico analysis as well as by molecular cloning and nucleotide sequencing. We identified all seven shrimp ALFs (ALF-A to ALF-G), both Type IIa and Type IIb crustins as well as two stylicins (STY1 and STY2) in Farfantepenaeus. Read More

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A scoping review of genetics and genomics research ethics policies and guidelines for Africa.

BMC Med Ethics 2021 Apr 2;22(1):39. Epub 2021 Apr 2.

College of Health Sciences, Makerere University, Kampala, Uganda.

Background: Genetics and genomics research (GGR) is increasingly being conducted around the world; yet, researchers and research oversight entities in many countries have struggled with ethical challenges. A range of ethics and regulatory issues need to be addressed through comprehensive policy frameworks that integrate with local environments. While important efforts have been made to enhance understanding and awareness of ethical dimensions of GGR in Africa, including through the H3Africa initiative, there remains a need for in-depth policy review, at a country-level, to inform and stimulate local policy development and revision on the continent. Read More

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Sesquiterpene Lactone Deoxyelephantopin Isolated from and Its Derivative DETD-35 Suppress BRAF Mutant Melanoma Lung Metastasis in Mice.

Int J Mol Sci 2021 Mar 22;22(6). Epub 2021 Mar 22.

Agricultural Biotechnology Research Center, Academia Sinica, No. 128, Sec. 2, Academia Road, Nankang, Taipei 115, Taiwan.

Melanoma is a highly metastatic disease with an increasing rate of incidence worldwide. It is treatment refractory and has poor clinical prognosis; therefore, the development of new therapeutic agents for metastatic melanoma are urgently required. In this study, we created a lung-seeking A375LM5 BRAF mutant melanoma cell clone and investigated the bioefficacy of a plant sesquiterpene lactone deoxyelephantopin (DET) and its novel semi-synthetic derivative, DETD-35, in suppressing metastatic A375LM5 melanoma growth in vitro and in a xenograft mouse model. Read More

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Daratumumab in the Treatment of Light-Chain (AL) Amyloidosis.

Cells 2021 Mar 4;10(3). Epub 2021 Mar 4.

Amyloidosis Research and Treatment Center, Foundation "Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Policlinico San Matteo", 27100 Pavia, Italy.

Systemic light-chain (AL) amyloidosis is caused by a small B cell, most commonly a plasma cell (PC), clone that produces toxic light chains (LC) that cause organ dysfunction and deposits in tissues. Due to the production of amyloidogenic, misfolded LC, AL PCs display peculiar biologic features. The small, indolent plasma cell clone is an ideal target for anti-CD38 immunotherapy. Read More

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The "Vesicular Intelligence" Strategy of Blood Cancers.

Genes (Basel) 2021 Mar 13;12(3). Epub 2021 Mar 13.

IRCCS Azienda Ospedaliero-Department of Experimental, Diagnostic and Specialty Medicine, School of Medicine, Institute of Hematology "Seràgnoli", University of Bologna, 40138 Bologna, Italy.

Blood cancers are a heterogeneous group of disorders including leukemia, multiple myeloma, and lymphoma. They may derive from the clonal evolution of the hemopoietic stem cell compartment or from the transformation of progenitors with immune potential. Extracellular vesicles (EVs) are membrane-bound nanovesicles which are released by cells into body fluids with a role in intercellular communication in physiology and pathology, including cancer. Read More

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Molecular Mechanism of Vitamin K2 Protection against Amyloid-β-Induced Cytotoxicity.

Biomolecules 2021 Mar 13;11(3). Epub 2021 Mar 13.

Department of Medicine, MacKay Medical College, New Taipei City 252, Taiwan.

The pathological role of vitamin K2 in Alzheimer's disease (AD) involves a definite link between impaired cognitive functions and decreased serum vitamin K levels. Vitamin K2 supplementation may have a protective effect on AD. However, the mechanism underlying vitamin K2 protection has not been elucidated. Read More

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Genetic, Genomics, and Responses to Stresses in Cyanobacteria: Biotechnological Implications.

Genes (Basel) 2021 Mar 29;12(4). Epub 2021 Mar 29.

Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France.

Cyanobacteria are widely-diverse, environmentally crucial photosynthetic prokaryotes of great interests for basic and applied science. Work to date has focused mostly on the three non-nitrogen fixing unicellular species PCC 6803, PCC 7942, and PCC 7002, which have been selected for their genetic and physiological interests summarized in this review. Extensive "omics" data sets have been generated, and genome-scale models (GSM) have been developed for the rational engineering of these cyanobacteria for biotechnological purposes. Read More

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Establishment of a Reverse Genetic System from a Bovine Derived Influenza D Virus Isolate.

Viruses 2021 Mar 18;13(3). Epub 2021 Mar 18.

Institute of Virology and Immunology, 3012 Bern, Switzerland.

The ruminant-associated influenza D virus (IDV) has a broad host tropism and was shown to have zoonotic potential. To identify and characterize molecular viral determinants influencing the host spectrum of IDV, a reverse genetic system is required. For this, we first performed 5' and 3' rapid amplification of cDNA ends (RACE) of all seven genomic segments, followed by assessment of the 5' and 3' NCR activity prior to constructing the viral genomic segments of a contemporary Swiss bovine IDV isolate (D/CN286) into the bidirectional pHW2000 vector. Read More

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Extranuclear Inheritance of Mitochondrial Genome and Epigenetic Reprogrammability of Chromosomal Telomeres in Somatic Cell Cloning of Mammals.

Int J Mol Sci 2021 Mar 18;22(6). Epub 2021 Mar 18.

Department of Reproductive Biotechnology and Cryoconservation, National Research Institute of Animal Production, 32-083 Kraków, Poland.

The effectiveness of somatic cell nuclear transfer (SCNT) in mammals seems to be still characterized by the disappointingly low rates of cloned embryos, fetuses, and progeny generated. These rates are measured in relation to the numbers of nuclear-transferred oocytes and can vary depending on the technique applied to the reconstruction of enucleated oocytes. The SCNT efficiency is also largely affected by the capability of donor nuclei to be epigenetically reprogrammed in a cytoplasm of reconstructed oocytes. Read More

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Molecular Basis of AmpC β-Lactamase Induction by Avibactam in : PBP Occupancy, Live Cell Binding Dynamics and Impact on Resistant Clinical Isolates Harboring PDC-X Variants.

Int J Mol Sci 2021 Mar 17;22(6). Epub 2021 Mar 17.

Servicio de Microbiología and Unidad de Investigación, Hospital Son Espases, Instituto de Investigación Sanitaria Illes Balears (IdISBa), 07120 Palma de Mallorca, Spain.

Avibactam belongs to the new class of diazabicyclooctane β-lactamase inhibitors. Its inhibitory spectrum includes class A, C and D enzymes, including AmpC. Nonetheless, recent reports have revealed strain-dependent avibactam AmpC induction. Read More

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MDM2 Amplified Sarcomas: A Literature Review.

Raf Sciot

Diagnostics (Basel) 2021 Mar 11;11(3). Epub 2021 Mar 11.

Department of Pathology, University Hospital, University of Leuven, 3000 Leuven, Belgium.

Murine Double Minute Clone 2, located at 12q15, is an oncogene that codes for an oncoprotein of which the association with p53 was discovered 30 years ago. The most important function of MDM2 is to control p53 activity; it is in fact the best documented negative regulator of p53. Mutations of the tumor suppressor gene p53 represent the most frequent genetic change in human cancers. Read More

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LyGo: A Platform for Rapid Screening of Lytic Polysaccharide Monooxygenase Production.

ACS Synth Biol 2021 Apr 2. Epub 2021 Apr 2.

The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kongens Lyngby, 2800, Denmark.

Environmentally friendly sources of energy and chemicals are essential constituents of a sustainable society. An important step toward this goal is the utilization of biomass to supply building blocks for future biorefineries. Lytic polysaccharide monooxygenases (LPMOs) are enzymes that play a critical role in breaking the chemical bonds in the most abundant polymers found in recalcitrant biomass, such as cellulose and chitin. Read More

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Frequency of Gluten-Reactive T Cells in Active Celiac Lesions Estimated by Direct Cell Cloning.

Front Immunol 2021 16;12:646163. Epub 2021 Mar 16.

K.G. Jebsen Coeliac Disease Research Centre, Department of Immunology, University of Oslo, Oslo, Norway.

Chronic inflammation of the small intestine in celiac disease is driven by activation of CD4+ T cells that recognize gluten peptides presented by disease-associated HLA-DQ molecules. We have performed direct cell cloning of duodenal biopsies from five untreated and one refractory celiac disease patients, and three non-celiac disease control subjects in order to assess, in an unbiased fashion, the frequency of gluten-reactive T cells in the disease-affected tissue as well as the antigen fine specificity of the responding T cells. From the biopsies of active disease lesions of five patients, 19 T-cell clones were found to be gluten-reactive out of total 1,379 clones tested. Read More

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Skewing of the B cell receptor repertoire in myalgic encephalomyelitis/chronic fatigue syndrome.

Brain Behav Immun 2021 Mar 29. Epub 2021 Mar 29.

Department of Immunology, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), 4-1-1 Ogawahigashi, Kodaira, Tokyo 187-8502, Japan; Multiple Sclerosis Center, National Center Hospital, NCNP, Tokyo, Japan. Electronic address:

Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a debilitating condition characterized by fatigue and post-exertional malaise, accompanied by various signs of neurological and autonomic dysfunction. ME/CFS is often triggered by an infectious episode and associated with an aberrant immune system. Here we report that ME/CFS is a disorder characterized by skewed B cell receptor gene usage. Read More

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