Follicular dendritic cell sarcoma (FDCS) is a rare malignant neoplasm that can clinically mimic a number of other tumors. FDCS can follow either an indolent or aggressive course. The prognosis tends to be worse for patients with large or high-grade tumors and/or an intra-abdominal tumor site. For optimal management, complete surgical excision is recommended. Radiation therapy and/or chemotherapy may be considered for incompletely resected tumors and for tumors with poor prognostic features, but the exact role of adjuvant therapy is unknown. We report a case of cervical FDCS in a 39-year-old black man, and we review the presentation and management of this disorder, with emphasis on the differential diagnosis.
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http://dx.doi.org/10.1177/014556131008900702 | DOI Listing |
Ann Rheum Dis
January 2025
Department of Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, Erlangen, Germany. Electronic address:
Objectives: CD19-targeting chimeric antigen receptor (CAR) T-cell therapy can induce long-term drug-free remission in patients with autoimmune diseases (AIDs). The efficacy of CD19-CAR T-cell therapy is presumably based on deep tissue depletion of B cells; however, such effect has not been proven in humans in vivo.
Methods: Sequential ultrasound-guided inguinal lymph node biopsies were performed at baseline and after CD19-CAR T-cell therapy in patients with AIDs.
Unlabelled: Dendritic cells (DCs) are key regulators of adaptive immunity, guiding T helper (Th) cell differentiation through antigen presentation, co-stimulation, and cytokine production. However, in steady-state conditions, certain DC subsets, such as Langerhans cells (LCs), induce T follicular helper (Tfh) cells and B cell responses without inflammatory stimuli. Using multiple mouse models and systems, we investigated the mechanisms underlying steady-state LC-induced adaptive immune responses.
View Article and Find Full Text PDFCancer Lett
January 2025
. Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China. Electronic address:
Tertiary lymphoid structures (TLSs) are ectopic immune cell clusters formed in nonlymphoid tissues affected by persistent inflammation, such as in cancer and prolonged infections. They have features of the structure and function of secondary lymphoid organs, featuring central CD20+ B cells, surrounded by CD3+ T cells, CD21+ follicular dendritic cells, and CD68+ macrophages, with a complex vascular system. TLS formation is governed by lymphotoxin-α1β2, TNF, and chemokines like CCL19, CCL21, and CXCL13, differing from secondary lymphoid organ development in developing later in life at sites of chronic inflammation.
View Article and Find Full Text PDFBiomolecules
January 2025
Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA.
Endosomal toll-like receptors (TLRs) TLR7, TLR8, and TLR9 play an important role in systemic lupus erythematosus (SLE) pathogenesis. The proteolytic processing of these receptors in the endolysosome is required for signaling in response to DNA and single-stranded RNA, respectively. Targeting this proteolytic processing may represent a novel strategy to inhibit TLR-mediated pathogenesis.
View Article and Find Full Text PDFVaccines (Basel)
January 2025
Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, School of Medicine, University of California Irvine, Irvine, CA 92697, USA.
Background: Nucleoside-modified mRNA encapsulated in lipid nanoparticles (LNPs) have emerged as a promising vaccine strategy, especially for COVID-19. While the LNPs protect mRNA from degradation and efficiently deliver the mRNA to antigen-presenting cells, the effect of lipid composition on the immunogenicity and protective efficacy of mRNA/LNP vaccines is not well characterized. Studies on using the mRNA/LNP platform for vaccines have largely focused on the nucleic acid cargo with less attention paid to the LNP vehicle.
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