Results 31 to 40 of about 18,035 (205)

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

Somatic CpG hypermutation is associated with mismatch repair deficiency in cancer

Molecular Systems Biology
Somatic hypermutation in cancer has gained momentum with the increased use of tumour mutation burden as a biomarker for immune checkpoint inhibitors.
Aidan Flynn, Sebastian M Waszak, Joachim Weischenfeldt   +2 more
doaj   +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

Using cell‐free RNA to identify B‐ and T‐cell clonality for diagnosis and monitoring of B‐ and T‐cell neoplasms

FEBS Open Bio, EarlyView.
Using peripheral blood for determining B‐cell or T‐cell clonality is more reliable when we use cell‐free RNA (cfRNA) because cells release blood significantly more RNA than DNA. Next‐generation sequencing (NGS) of cfRNA allows us to evaluate fragment cfRNA and evaluate clonality reliably without the need for prior determination of the specific dominant
Adam Albitar, Sally Agersborg, Ahmed Charifa, Pooja Phull, Noa Biran, David Vesole, Harsh Parmar, Andrew Pecora, Andrew Ip, Andre Goy, David Siegel, Maher Albitar   +11 more
wiley   +1 more source

Multiple myeloma shows no intra-disease clustering of immunoglobulin heavy chain genes

Haematologica, 2012
Background Characterization of the immunoglobulin gene repertoire has improved our understanding of the immunopathogenesis of lymphoid tumors. Early B-lymphocyte precursors of multiple myeloma are known to exist and might be susceptible to antigenic ...
Simone Ferrero, Daniela Capello, Mirija Svaldi, Michela Boi, Daniela Gatti, Daniela Drandi, Davide Rossi, Sara Barbiero, Barbara Mantoan, Elisabetta Mantella, Manuela Zanni, Paola Ghione, Alessandra Larocca, Roberto Passera, Francesco Bertoni, Valter Gattei, Francesco Forconi, Luca Laurenti, Giovanni Del Poeta, Roberto Marasca, Sergio Cortelazzo, Gianluca Gaidano, Antonio Palumbo, Mario Boccadoro, Marco Ladetto   +24 more
doaj   +1 more source

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

Aging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

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).
Kolotova T. , Makarenko V., Sorokoumova L., Davidenko M.   +3 more
doaj   +3 more sources

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

Optimization of B Cell Responses in Human Immune System Mice Through Organoid Based Screening

Advanced Science, EarlyView.
Human immune system (HIS) mice show limited B cell responses to immunization. Using HIS mouse spleen organoids, this study identifies cytokine combinations and innate immune signals that drive human B cell expansion, differentiation, and class‐switch. Applying these signals in vivo through temporal separation enables antigen‐specific IgG responses and ...
Haiqiao Sun, He Li, Xu Zhu, Zijian Zhang, Deshan Ren, Shuai Ding, Yan Li   +6 more
wiley   +1 more source