Results 41 to 50 of about 20,554 (213)

CD27(-) B-cells produce class switched and somatically hyper-mutated antibodies during chronic HIV-1 infection. [PDF]

PLoS ONE, 2009
Class switch recombination and somatic hypermutation occur in mature B-cells in response to antigen stimulation. These processes are crucial for the generation of functional antibodies.
Alberto Cagigi, Likun Du, Linh Vu Phuong Dang, Sven Grutzmeier, Ann Atlas, Francesca Chiodi, Qiang Pan-Hammarström, Anna Nilsson   +7 more
doaj   +1 more source

Decoding Spatial Heterogeneity and Multi‐Omics Regulation with Hierarchical Graph Learning

Advanced Science, EarlyView.
ABSTRACT Recent advances in spatial multi‐omics technologies have enabled the simultaneous profiling of multiple molecular layers within the same tissue slice, providing unprecedented opportunities to investigate tissue spatial organization. However, most existing computational methods identify spatial domains in a purely data‐driven manner, rarely ...
Jiazhou Chen, Jiahui Xie, Yi Liao, Junyu Li, Longqi Liu, Xin Gao, Hongmin Cai   +6 more
wiley   +1 more source

Variable Domain N-Linked Glycans Acquired During Antigen-Specific Immune Responses Can Contribute to Immunoglobulin G Antibody Stability

Frontiers in Immunology, 2018
Immunoglobulin G (IgG) can contain N-linked glycans in the variable domains, the so-called Fab glycans, in addition to the Fc glycans in the CH2 domains.
Fleur S. van de Bovenkamp, Fleur S. van de Bovenkamp, Ninotska I. L. Derksen, Ninotska I. L. Derksen, Mariëlle J. van Breemen, Steven W. de Taeye, Steven W. de Taeye, Steven W. de Taeye, Pleuni Ooijevaar-de Heer, Pleuni Ooijevaar-de Heer, Rogier W. Sanders, Rogier W. Sanders, Theo Rispens, Theo Rispens   +13 more
doaj   +1 more source

REV7 is required for processing AID initiated DNA lesions in activated B cells

Nature Communications, 2020
REV7 has emerged as a critical regulator of DNA double-strand breaks repair. Here, the authors show that REV7 is crucial for both antibody class switch recombination and somatic hypermutation in activated B cells, in addition to their survival upon AID ...
Dingpeng Yang, Ying Sun, Jingjing Chen, Ying Zhang, Shuangshuang Fan, Min Huang, Xia Xie, Yanni Cai, Yafang Shang, Tuantuan Gui, Liming Sun, Jiazhi Hu, Junchao Dong, Leng-Siew Yeap, Xiaoming Wang, Wei Xiao, Fei-Long Meng   +16 more
doaj   +1 more source

Chicken MBD4 Regulates Immunoglobulin Diversification by Somatic Hypermutation

Frontiers in Immunology, 2019
Immunoglobulin (Ig) diversification occurs via somatic hypermutation (SHM) and class switch recombination (CSR), and is initiated by activation-induced deaminase (AID), which converts cytosine to uracil.
Ryan Costello, Jose F. Cantillo, Amy L. Kenter   +2 more
doaj   +1 more source

Genome-wide somatic hypermutation [PDF]

Proceedings of the National Academy of Sciences, 2004
DNA mutagenesis is generally considered harmful. Yet activated B cells normally mutate the Ig loci. Because this somatic hypermutation is potentially dangerous, it has been hypothesized that mutations do not occur throughout the genome but instead are actively targeted to the Ig loci.
Clifford L, Wang, Ryan A, Harper, Matthias, Wabl   +2 more
openaire   +2 more sources

Engineering Human Donor Derived Germinal Center‐Like Organoids (GCLOs) for Studying Immune Response to Vaccination

Advanced Science, EarlyView.
We bioengineered a new approach methodology of generating Germinal Center Organoids that self‐organize from human blood‐derived immune cells. These immune organoids reproduce key features of humoral immunity, IgG production, and plasmablast emergence.
Bhumi Suthar, Carlos Gomez, Giancarlo Asencio, Suresh Pallikkuth, Ashutosh Agarwal   +4 more
wiley   +1 more source

Cumulative Antigen Suppression Reduces Clonal Plasma Cell Evolution in Gaucher Disease

American Journal of Hematology, EarlyView.
ABSTRACT Chronic antigenic stimulation is implicated in the pathogenesis of monoclonal gammopathy and multiple myeloma, yet longitudinal human evidence linking sustained antigen exposure to modifiable clonal plasma cell evolution remains limited. Gaucher disease (GD), caused by biallelic GBA1 pathogenic variants, is characterized by accumulation of ...
Noor Ul Ain, Noffar Bar, Lilu Guo, Katherine Klinger, Punita Gupta, Atta Ur Rahman, Ruhua Yang, Yanhong Deng, Natalia Neparidze, Shiny Nair, Pramod K. Mistry   +10 more
wiley   +1 more source

An antigen-driven B-cell response within the salivary glands of patients with Sjögren’s syndrome [PDF]

, 2002
Infection with a bacterium or virus induces the production of antibodies, specialised protein molecules that bind to and eliminate the microorganism.
Berek, C., Stott, D.I.
core  

AID/APOBEC–dependent somatic hypermutation and DNA rearrangements of immunoglobulin and non-immunoglobulin genes [PDF]

Annals of Mechnikov's Institute, 2019
Editing Ig genes by activation induced deaminase (AID) initiates the antibody diversification process in B lymphocytes.In mammalian B cells, this process includes somatic hypermutation (SHM) and class switch recombination (CSR).The activity of AID is ...
T Kolotova, V Makarenko, L Sorokoumova, M Davidenko   +3 more
doaj   +2 more sources