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Related Concept Videos

T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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...
Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
Receptor Downregulation in MVBs01:15

Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that  lead to cell proliferation, migration, and differentiation. Overexpression of EGFR  stimulates cells to proliferate. Excessive  EGFR activation may...
Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:

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Related Experiment Video

Updated: Jun 7, 2026

Study of Dendritic Cell Development by Short Hairpin RNA-Mediated Gene Knockdown in a Hematopoietic Stem and Progenitor Cell Line In vitro
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Study of Dendritic Cell Development by Short Hairpin RNA-Mediated Gene Knockdown in a Hematopoietic Stem and Progenitor Cell Line In vitro

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Mechanisms regulating dendritic cell specification and development.

Stephanie S Watowich1, Yong-Jun Liu

  • 1Department of Immunology and Center for Cancer Immunology Research, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA. swatowic@mdanderson.org

Immunological Reviews
|October 26, 2010
PubMed
Summary
This summary is machine-generated.

Understanding dendritic cell (DC) development is key to immunity. This review explores how cytokines and transcription factors guide DC lineage diversification from hematopoietic stem cells.

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Development and Functional Characterization of Murine Tolerogenic Dendritic Cells
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Last Updated: Jun 7, 2026

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Area of Science:

  • Immunology
  • Developmental Biology
  • Hematopoiesis

Background:

  • Dendritic cells (DCs) are crucial for linking innate and adaptive immunity.
  • Understanding DC lineage diversification is essential for natural immunity and clinical applications.
  • DCs develop from hematopoietic stem cells via progenitor subsets.

Purpose of the Study:

  • To review recent findings on dendritic cell (DC) developmental pathways.
  • To elucidate the molecular mechanisms guiding DC diversification.
  • To highlight the roles of cytokines and transcription factors in DC development.

Main Methods:

  • Review of recent scientific literature on DC development.
  • Analysis of signaling pathways involving FMS-like tyrosine kinase 3 ligand (Flt3L) and Flt3.
  • Examination of the roles of granulocyte-macrophage colony-stimulating factor (GM-CSF) and type I interferons (IFNs).
  • Investigation of key transcription factors like IRF8, E2-2, and Batf3.

Main Results:

  • Flt3L and Flt3 signaling are critical for DC development from hematopoietic stem cells.
  • GM-CSF and type I IFNs significantly influence DC development in vivo.
  • Lineage-restricted transcription factors (IRF8, E2-2, Batf3) direct DC fate.
  • Molecular interplay between cytokines and transcription factors shapes DC diversification.

Conclusions:

  • Recent insights advance our understanding of the complex DC developmental hierarchy.
  • Elucidating DC development pathways offers potential for immune system regulation.
  • Further research into molecular mechanisms will refine strategies for DC-based therapies.