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TCR transgenic clone selection guided by immune receptor analysis and single-cell RNA expression of polyclonal responders.
Elife
December 2024
Laboratory of Immunoregulation and Mucosal Immunology, VIB Center for Inflammation Research, Ghent, Belgium.
Since the precursor frequency of naive T cells is extremely low, investigating the early steps of antigen-specific T cell activation is challenging. To overcome this detection problem, adoptive transfer of a cohort of T cells purified from T cell receptor (TCR) transgenic donors has been extensively used but is not readily available for emerging pathogens. Constructing TCR transgenic mice from T cell hybridomas is a labor-intensive and sometimes erratic process, since the best clones are selected based on antigen-induced CD69 upregulation or IL-2 production in vitro, and TCR chains are polymerase chain reaction (PCR)-cloned into expression vectors.
View Article and Find Full Text PDFComputational design of multi-epitope vaccine against Hepatitis C Virus infection using immunoinformatics techniques.
PLoS One
January 2025
Neuroscience Center, King Fahad Specialist Hospital Dammam, Dammam, Saudi Arabia.
Hepatitis C Virus (HCV) is a blood borne pathogen that affects around 200 million individuals worldwide. Immunizations against the Hepatitis C Virus are intended to enhance T-cell responses and have been identified as a crucial component of successful antiviral therapy. Nevertheless, attempts to mediate clinically relevant anti-HCV activity in people have mainly failed, despite the vaccines present satisfactory progress.
View Article and Find Full Text PDFSterol-Targeted Laboratory Evolution Allows the Isolation of Thermotolerant and Respiratory-Competent Clones of the Industrial Yeast Saccharomyces cerevisiae.
Microb Biotechnol
January 2025
Department of Biotechnology, Instituto de Agroquímica y Tecnología de los Alimentos, Consejo Superior de Investigaciones Científicas, Paterna, Valencia, Spain.
Sterol composition plays a crucial role in determining the ability of yeast cells to withstand high temperatures, an essential trait in biotechnology. Using a targeted evolution strategy involving fluconazole (FCNZ), an inhibitor of the sterol biosynthesis pathway, and the immunosuppressant FK506, we aimed to enhance thermotolerance in an industrial baker's yeast population by modifying their sterol composition. This approach yielded six isolates capable of proliferating in liquid YPD with μ values ranging from 0.
View Article and Find Full Text PDFHeterologous and High Production of Ergothioneine in by Using Genes from Anaerobic Bacteria.
Metabolites
January 2025
School of Biotechnology, Key Laboratory of Carbohydrate Chemistry, Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China.
Purpose: This study aimed to utilize genetically engineered for the production of ergothioneine (EGT). Given the value of EGT and the application of in enzyme preparation production, we cloned the key enzymes (EanA and EanB) from . Through gene alignment, new ergothioneine synthase genes (EanAN and EanBN) were identified and then expressed in to construct strains.
View Article and Find Full Text PDFInter- and intra-varietal clonal differences influence the aroma compound profiles of wines analyzed by GC-MS and GC-IMS.
Food Chem X
January 2025
College of Enology, Northwest A & F University, No. 22 Xinong Road, Yangling 712100, China.
To investigate the impact of genetic factors on wine aroma, wines made from 22 clones of five grape varieties ( L.) were used to analyze the volatile compounds by headspace solid phase microextraction gas chromatography mass spectrometer (HS-SPME-GC-MS) and headspace gas chromatography-ion mobility spectrometry (HS-GC-IMS). Results showed that 52 and 49 aroma compounds were identified from 22 clones of wines by two technologies, respectively.
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