Results 61 to 70 of about 95,784 (161)

B7-CD28 co-stimulation modulates central tolerance via thymic clonal deletion and Treg generation through distinct mechanisms

open access: yesNature Communications, 2020
B7-CD28 co-stimulation is important for T cell activation and clonal expansion in the periphery. Here the authors show that, in mouse thymus, B7-CD28 differentially controls thymocyte clonal deletion and Treg induction, with distinct CD28 signaling ...
Masashi Watanabe   +3 more
doaj   +1 more source

Clones in blood and stratified epithelial cells, and their drivers

open access: yesProceedings of the Japan Academy. Series B, Physical and Biological Sciences
The term “clone” is commonly used in the medical and life sciences to denote a genetically identical population, at both the individual and cellular levels. The concept of clonal expansion is of fundamental importance in cancer research.
Shigeru CHIBA
doaj   +1 more source

Mitochondrial heteroplasmy improves risk prediction for myeloid neoplasms

open access: yesNature Communications
Clonal hematopoiesis of indeterminate potential is the primary pathogenic risk factor for myeloid neoplasms, while heteroplasmy (mutations in a subset of cellular mitochondrial DNA) is another marker of clonal expansion associated with hematological ...
Yun Soo Hong   +13 more
doaj   +1 more source

Integrative single-cell multi-omics of CD19-CARpos and CARneg T cells suggest drivers of immunotherapy response in B cell neoplasias

open access: yesCell Reports Medicine
Summary: The impact of phenotypic, clonal, and functional heterogeneity of chimeric antigen receptor (CAR)-T cells on clinical outcome remains understudied.
Mercedes Guerrero-Murillo   +20 more
doaj   +1 more source

Impact of CMV Infection on Natural Killer Cell Clonal Repertoire in CMV-Naïve Rhesus Macaques

open access: yesFrontiers in Immunology, 2019
Recent functional, gene expression, and epigenetic studies have suggested the presence of a subset of mature natural killer (NK) cells responsible for maintaining NK cell memory. The lack of endogenous clonal markers in NK cells impedes understanding the
Lauren L. Truitt   +15 more
doaj   +1 more source

Description of a possible clonal expansion of Plasmodium vivax in Manaus - Amazonas - Brazil

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 1999
Atypical P. vivax cases reported in Manaus municipality led us to detect a genetic isolate of P. vivax. Variable regions of SSUrRNA were examined from the initial time of infection and in the two recrudescences/relapses from a patient exhibiting ...
Maria das Graças Costa Alecrim   +7 more
doaj  

clonal expansion

open access: yes
Citation: 'clonal expansion' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.13014 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Epithelial Dynamics of Cystogenesis in Genetic Models of Autosomal Dominant Polycystic Kidney Disease

open access: yesCells
Autosomal dominant polycystic kidney disease (ADPKD), caused by mutations in PKD1 or PKD2, is characterized by progressive and exponential enlargement of renal and hepatic cysts.
Mengyan Sun   +5 more
doaj   +1 more source

Evolving copy number gains promote tumor expansion and bolster mutational diversification

open access: yesNature Communications
The timing and fitness effect of somatic copy number alterations (SCNA) in cancer evolution remains poorly understood. Here we present a framework to determine the timing of a clonal SCNA that encompasses multiple gains.
Zicheng Wang   +7 more
doaj   +1 more source

GNLY+CD8+ T cells bridge premature aging and persistent inflammation in people living with HIV

open access: yesEmerging Microbes and Infections
People living with HIV (PLWH) exhibit accelerated aging, characterized by systemic inflammation, termed “inflammaging.” While T-cell expansion is prevalent in PLWH, its connection to inflammaging remains unclear.
Hui-Fang Wang   +17 more
doaj   +1 more source

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