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Conformational Antibodies to Proteolipid Protein-1 and Its Peripheral Isoform DM20 in Patients With CNS Autoimmune Demyelinating Disorders.
Neurol Neuroimmunol Neuroinflamm
March 2025
Neuroimmunology Laboratory and Neuroimmunology Research Section, IRCCS Mondino Foundation, Pavia, Italy.
Background And Objectives: Antibodies to proteolipid protein-1 (PLP1-IgG), a major central myelin protein also expressed in the peripheral nervous system (PNS) as the isoform DM20, have been previously identified mostly in patients with multiple sclerosis (MS), with unclear clinical implications. However, most studies relied on nonconformational immunoassays and included few patients with non-MS CNS autoimmune demyelinating disorders (ADDs). We aimed to investigate conformational PLP1-IgG in the whole ADD spectrum.
View Article and Find Full Text PDFAnti-immune complex antibodies are elicited during repeated immunization with HIV Env immunogens.
Sci Immunol
January 2025
Department of Integrative, Structural and Computational Biology, Scripps Research, La Jolla, CA, USA.
Vaccination strategies against HIV-1 aim to elicit broadly neutralizing antibodies (bnAbs) using prime-boost regimens with HIV envelope (Env) immunogens. Epitope mapping has shown that early antibody responses are directed to easily accessible nonneutralizing epitopes on Env instead of bnAb epitopes. Autologously neutralizing antibody responses appear upon boosting, once immunodominant epitopes are saturated.
View Article and Find Full Text PDFStrong Association of Autoantibodies Targeting Deamidated Extracellular Epitopes of Insulinoma Antigen-2 (IA-2) with Clinical Onset of Type 1 Diabetes.
Diabetes
January 2025
Barbara Davis Center for Diabetes, University of Colorado, Aurora, CO, USA.
Increasing evidence shows that pathogenic T cells in type 1 diabetes (T1D) that may have evaded negative selection recognize post-translational modified (PTM) epitopes of self-antigens. We have investigated the profiles of autoantibodies specifically targeting the deamidated epitopes of insulinoma antigen-2 extracellular domain (IA-2ec) to explore their relationship with T1D development. We compared the characteristics of autoantibodies targeting the IA-2ec Q>E epitopes (PTM IA-2ecA) as well as those targeting the IA-2ec unmodified epitopes (IA-2ecA) in participants across different stages of T1D development and in individuals with other types of diabetes and other kinds of autoimmunity.
View Article and Find Full Text PDFA Lambda-evo (λ) phage platform for Zika virus E protein display.
Appl Microbiol Biotechnol
January 2025
Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional No, 2508, C.P. 07360, Mexico City, Mexico.
One of the most significant bacteriophage technologies is phage display, in which heterologous peptides are exhibited on the virion surface. This work describes the display of λ decorative protein D linked to the E protein domain III of Zika virus (D-ZE), to the GFP protein (D-GFP), or to different domain III epitopes of the E protein (D-TD), exhibited on the surface of an in vitro evolved lambda phage (λ). This phage harbors a gene D deletion and was subjected to directed evolution using Escherichia coli W3110/pD-ZE as background.
View Article and Find Full Text PDFDevelopment of a broad-spectrum epitope-based vaccine against Streptococcus pneumoniae.
PLoS One
January 2025
Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh.
Streptococcus pneumoniae (SPN) is a significant pathogen causing pneumonia and meningitis, particularly in vulnerable populations like children and the elderly. Available pneumonia vaccines have limitations since they only cover particular serotypes and have high production costs. The emergence of antibiotic-resistant SPN strains further underscores the need for a new, cost-effective, broad-spectrum vaccine.
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