A rare case of plasma cell leukaemia and papillary serous cystadenacarcinoma of ovary in a 58-year-old female is reported.
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Influenza 5xM2e mRNA lipid nanoparticle vaccine confers broad immunity and significantly enhances the efficacy of inactivated split vaccination when coadministered.
J Immunol
January 2025
Center for Inflammation, Immunity and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, United States.
Current influenza vaccines are not effective in conferring protection against antigenic variants and pandemics. To improve cross-protection of influenza vaccination, we developed a 5xM2e messenger RNA (mRNA) vaccine encoding the tandem repeat conserved ectodomain (M2e) of ion channel protein M2 derived from human, swine, and avian influenza A viruses. The lipid nanoparticle (LNP)-encapsulated 5xM2e mRNA vaccine was immunogenic, eliciting high levels of M2e-specific IgG antibodies, IFN-γ+ T cells, T follicular helper cells, germinal center phenotypic B cells, and plasma cells.
View Article and Find Full Text PDFTeleost IgM+ plasma-like cells: beyond antibody secretion.
J Immunol
January 2025
Biotechnology Department, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Consejo Superior de Investigaciones Científicas, Madrid, Spain.
Upon antigen encounter, B cells start a differentiation process toward antibody-secreting cells (ASCs), initially plasmablasts, and eventually long-lived plasma cells. All these ASCs specialize in secreting important amounts of antibodies and usually lose other functionalities of naïve B cells. This differentiation process is scarcely characterized in teleost fish, in which B cells have been shown to share many functional and phenotypic characteristics of mammalian B1 innate subsets.
View Article and Find Full Text PDFMaternal supplementation with α-tocopherol inhibits the development of offspring food allergy, H1R signaling and ultimately anaphylaxis early in life.
J Immunol
February 2025
Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, United States.
Food allergy has had a rapid rise in prevalence, and thus it is important to identify approaches to limit the development of food allergy early in life. Because maternal dietary supplementation with α-tocopherol (α-T), an isoform of vitamin E, during pregnancy and nursing increases neonate plasma levels of α-T and can limit neonate development of other allergies, we hypothesized that α-T can limit development of food allergy. To assess this, male mice with mutations in their skin barrier genes (FT-/- mice) were mated with wild-type females that received a diet supplemented with α-tocopherol or a control diet.
View Article and Find Full Text PDFThe pentameric complex is not required for congenital CMV transmission in seronegative rhesus macaques.
Sci Transl Med
March 2025
Vaccine and Gene Therapy Institute, Oregon Health & Science University, Beaverton, OR 97006, USA.
Congenital cytomegalovirus (cCMV) is the leading infectious cause of neonatal neurological impairment worldwide, but the viral factors enabling vertical spread across the placenta remain undetermined. The pentameric complex (PC), composed of the subunits gH/gL/UL128/UL130/UL131A, has been demonstrated to be important for entry into nonfibroblast cells in vitro. These findings link the PC to broad cell tropism and virus dissemination in vivo, denoting all subunits as potential targets for intervention strategies and vaccine development.
View Article and Find Full Text PDFSplenic red pulp macrophages eliminate the liver-resistant from the blood circulation of mice.
Sci Adv
March 2025
Center for Infectious Biology, School of Basic Medical Sciences, Tsinghua University, Beijing 100084, China.
Invasive infections by encapsulated bacteria are the major cause of human morbidity and mortality. The liver resident macrophages, Kupffer cells, form the hepatic firewall to clear many encapsulated bacteria in the blood circulation but fail to control certain high-virulence capsule types. Here we report that the spleen is the backup immune organ to clear the liver-resistant serotypes of (pneumococcus), a leading human pathogen.
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