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Targeted barcoding of variable antibody domains and individual transcriptomes of the human B-cell repertoire using Link-Seq.
PNAS Nexus
January 2025
Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
Here, we present Link-Seq, a highly efficient droplet microfluidic method for combined sequencing of antibody-encoding genes and the transcriptome of individual B cells at large scale. The method is based on 3' barcoding of the transcriptome and subsequent single-molecule PCR in droplets, which freely shift the barcode along specific gene regions, such as the antibody heavy- and light-chain genes. Using the immune repertoire of COVID-19 patients and healthy donors as a model system, we obtain up to 91.
View Article and Find Full Text PDFHumoral and cellular response to SARS-CoV-2 mRNA vaccine in paediatric heart transplant recipients.
Heliyon
January 2025
Pediatric Infectious Diseases Unit, Department of Pediatrics, Gregorio Marañón University Hospital, Madrid, Spain.
Objective: The aim of this prospective cohort study is to analyse the humoral and cellular vaccine responses in paediatric heart transplant recipients (HTR, n = 12), and compare it with the response in healthy controls (HC, n = 14). All participants were 5-18 years old and vaccinated with mRNA vaccine against SARS-CoV-2 between December 2021 and May 2022.
Methods: The humoral response was measured by quantifying antibody titers against SARS-CoV-2 spike protein (anti-S).
Theoretical and practical considerations for validating antigen-specific B cell ImmunoSpot assays.
J Immunol Methods
January 2025
Research & Development Department, Cellular Technology Limited, Shaker Heights, OH 44122, USA. Electronic address:
Owing to their ability to reliably detect even very rare antigen-specific B cells in cellular isolates such as peripheral blood mononuclear cells (PBMC), and doing so robustly in a high throughput-compatible manner, B cell ELISPOT/FluoroSpot (collectively "B cell ImmunoSpot") tests have become increasingly attractive for immune monitoring in regulated settings. Presently, there are no guidelines for the qualification and validation of B cell ImmunoSpot assay results. Here, we propose such guidelines, building on the experience acquired from T cell ImmunoSpot testing in an environment adhering to the requirements of regulatory bodies yet taking the unique features of B cell assays into account.
View Article and Find Full Text PDFThe Evaluation of the Efficacy of a Novel Subunit Vaccine in the Prevention of -Caused Diarrhoea in Neonatal Calves.
Animals (Basel)
January 2025
Clinique Vétérinaire des Mazets, 15400 Riom es Montagnes, France.
()-caused calf diarrhoea (scours) is widespread and leads to calf mortality in cattle industries worldwide. A recent discovery of a glycopeptide epitope on the parasite recognized by a monoclonal antibody has led to the development of a new vaccine. It was designed for cows to pass on passive immunity to their neonatal calves.
View Article and Find Full Text PDFBackground: Antibody-drug conjugate (ADC) is an anticancer drug that links toxins to specifically targeted antibodies via linkers, offering the advantages of high target specificity and high cytotoxicity. However, complexity of its structural composition poses a greater difficulty for drug design studies.
Objectives: Pharmacokinetic/pharmacodynamic (PK/PD) based consideration of ADCs has increasingly become a hot research topic for optimal drug design in recent years, providing possible ideas for obtaining ADCs with desirable properties.
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