The ability to efficiently isolate antigen-specific B cells in high throughput will greatly accelerate the discovery of therapeutic monoclonal antibodies (mAbs) and catalyze rational vaccine development. Traditional mAb discovery is a costly and labor-intensive process, although recent advances in single-cell genomics using emulsion microfluidics allow simultaneous processing of thousands of individual cells. Here we present a streamlined method for isolation and analysis of large numbers of antigen-specific B cells, including next generation antigen barcoding and an integrated computational framework for B cell multi-omics. We demonstrate the power of this approach by recovering thousands of antigen-specific mAbs, including the efficient isolation of extremely rare precursors of VRC01-class and IOMA-class broadly neutralizing HIV mAbs.
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http://dx.doi.org/10.3389/fcimb.2022.962945 | DOI Listing |
PLoS Pathog
January 2025
Division of Microbiology and Immunology, Emory National Primate Research Center, Emory University, Atlanta, Georgia, United States of America.
The continued evolution of SARS-CoV-2 variants capable of subverting vaccine and infection-induced immunity suggests the advantage of a broadly protective vaccine against betacoronaviruses (β-CoVs). Recent studies have isolated monoclonal antibodies (mAbs) from SARS-CoV-2 recovered-vaccinated donors capable of neutralizing many variants of SARS-CoV-2 and other β-CoVs. Many of these mAbs target the conserved S2 stem region of the SARS-CoV-2 spike protein, rather than the receptor binding domain contained within S1 primarily targeted by current SARS-CoV-2 vaccines.
View Article and Find Full Text PDFMethods Protoc
January 2025
The Center for Forensic Science Research and Education, 206 Welsh Road, Horsham, PA 19440, USA.
This differential extraction protocol details the steps for isolating DNA from sample pads used in lateral flow immunochromatographic (LFI) tests, particularly for cases involving mixed biological samples such as semen and menstrual blood, or other evidence related to sexual assault. This procedure utilizes a differential extraction technique applied to sample pads from immunochromatographic tests, where the sample pads serve as the substrate. The method involves two sequential lysis steps to effectively separate non-sperm and sperm fractions, enabling the targeted isolation of distinct cell types for downstream DNA analysis.
View Article and Find Full Text PDFPediatr Rep
January 2025
Department of Public Health, Graduate School of Health Sciences, Kobe University, Kobe 654-0142, Japan.
Background/objectives: Aquatic exercise is attracting attention as a method of rehabilitation for children with cerebral palsy (CP). The purpose of this systematic review was to evaluate whether aquatic exercise for children with CP improves their walking ability and quality of life (QOL) and is enjoyable for them.
Methods: A literature search was conducted on 2 August 2024 using three databases: PubMed, Web of Science, and the Cochrane Central Register of Controlled Trials through Evidence-Based Medicine Reviews.
Biomol Concepts
January 2025
Division of Pharmacology, School of Medical and Life Sciences, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500 Selangor Darul Ehsan, Malaysia.
Seaweeds have been utilized as food, fodder, fertilizer, and medicine since ancient times; nevertheless, they have received only a little attention. In the current work, we extracted the sulfated polysaccharide from a marine source and investigated its anti-arthritic potential . The isolated and freeze-dried polysaccharide was tested for acute oral toxicity based on OECD 423.
View Article and Find Full Text PDFJ Stem Cells Regen Med
October 2024
Mansoura University, Faculty of Science, Zoology department, Mansoura, Dakahlia, Egypt.
In recent years, bone marrow derived mesenchymal stem cells (BM-derived MSCs) have emerged as a powerful cell-based therapy for various diseases, including male infertility. Demonstrating the efficiency of BM-derived MSCs transplantation by different routes of injection to home and repair testis of busulfan-induced azoospermic rats. In the present study, rat BM-derived MSC was isolated and characterized for mesenchymal &hematopoietic markers using flow-cytometry.
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