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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...
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
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...
Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:
Molecular Factors Affecting Cell Division01:27

Molecular Factors Affecting Cell Division

Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
Several proteins function as internal regulators to ensure each cell cycle stage is completed faithfully before proceeding to the next. Regulator molecules may act directly or influence the activity or production of other...

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Related Experiment Video

Updated: Jun 19, 2026

Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses
10:13

Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses

Published on: May 6, 2019

Regulating functional cell fates in CD8 T cells.

Protul A Shrikant1, Rajesh Rao, Qingsheng Li

  • 1Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA. protul.shrikant@roswellpark.org

Immunologic Research
|October 28, 2009
PubMed
Summary
This summary is machine-generated.

Understanding CD8(+) T cell subsets is key for effective cancer immunity. Research identifies factors regulating these cells to improve adoptive cell transfer and immunization strategies for tumor treatment.

Related Experiment Videos

Last Updated: Jun 19, 2026

Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses
10:13

Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses

Published on: May 6, 2019

Area of Science:

  • Immunology
  • Cancer Research
  • Cellular Biology

Background:

  • CD8(+) T cells are crucial for long-lasting immunity against infections and cancer.
  • The optimal CD8(+) T cell functional type (effector or memory) for tumor immunity remains unclear.
  • Identifying factors that regulate CD8(+) T cell differentiation is essential for cancer therapy.

Purpose of the Study:

  • To investigate the extrinsic factors influencing CD8(+) T cell differentiation into specific effector and memory phenotypes.
  • To determine the tumor efficacy of diverse CD8(+) T cell functional types.
  • To leverage this knowledge for developing novel cancer treatment strategies.

Main Methods:

  • Studying antigen strength, co-stimulatory molecules, cytokines, and small molecule modifiers.
  • Analyzing intrinsic programs regulating CD8(+) T cell fate.
  • Testing distinct CD8(+) T cell types in murine tumor models.

Main Results:

  • Identified key extrinsic factors that regulate CD8(+) T cell differentiation.
  • Demonstrated the differential efficacy of various CD8(+) T cell subsets in tumor models.
  • Provided insights into generating antigen-specific CD8(+) T cell immunity.

Conclusions:

  • Understanding CD8(+) T cell regulation is vital for enhancing anti-tumor immunity.
  • Findings support the development of improved adoptive cell transfer and immunization strategies.
  • This research paves the way for more effective cancer immunotherapies.