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Related Concept Videos

Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
Primary Lymphoid Organs01:16

Primary Lymphoid Organs

Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
The Intrinsic Apoptotic Pathway01:31

The Intrinsic Apoptotic Pathway

Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...

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Related Experiment Video

Updated: May 15, 2026

VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma
15:07

VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma

Published on: December 28, 2015

Origin and pathogenesis of B cell lymphomas.

Marc Seifert1, René Scholtysik, Ralf Küppers

  • 1Institute of Cell Biology (Cancer Research), Medical School, University of Duisburg-Essen, Essen, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|January 9, 2013
PubMed
Summary

Errors in immunoglobulin gene remodeling during normal B cell development can lead to B cell lymphomas. These cancers arise from genetic errors, viral infections, and microenvironment signals, often originating in germinal center B cells.

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Last Updated: May 15, 2026

VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma
15:07

VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma

Published on: December 28, 2015

Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma
10:52

Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma

Published on: March 30, 2018

Flow Cytometric Characterization of Murine B Cell Development
08:25

Flow Cytometric Characterization of Murine B Cell Development

Published on: January 22, 2021

Area of Science:

  • Immunology
  • Oncology
  • Molecular Biology

Background:

  • B cell development involves immunoglobulin (Ig) gene remodeling through V(D)J recombination, somatic hypermutation, and class switching.
  • Errors in these critical processes contribute to the pathogenesis of B cell lymphomas.
  • B cell malignancies are characterized by Ig locus translocations, proto-oncogene activation, tumor suppressor gene inactivation, and viral infections like Epstein-Barr virus.

Purpose of the Study:

  • To elucidate the molecular mechanisms and contributing factors in the development of B cell lymphomas.
  • To understand the role of antigen receptor expression and microenvironmental signals in B cell malignancies.
  • To identify the cell of origin for many B cell malignancies.

Main Methods:

  • Review of existing literature on B cell development, immunoglobulin gene rearrangement, and lymphomagenesis.
  • Analysis of genetic alterations, including translocations and mutations, in B cell lymphomas.
  • Investigation of the role of viral infections and cellular microenvironment in disease progression.

Main Results:

  • V(D)J recombination errors, somatic hypermutation, and class switching are implicated in B cell lymphoma development.
  • Proto-oncogene translocations at Ig loci are common in B cell malignancies.
  • Chronic antigenic stimulation and microenvironmental support are crucial for lymphoma survival and proliferation.
  • Many B cell lymphomas originate from germinal center B cells due to their high proliferation and mutagenic activity.

Conclusions:

  • Aberrant immunoglobulin gene remodeling and associated genetic events are central to B cell lymphoma pathogenesis.
  • Viral infections and microenvironmental interactions significantly influence lymphoma development and progression.
  • Germinal center B cells are a likely origin for many B cell malignancies owing to their inherent biological characteristics.