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Related Concept Videos

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...

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Related Experiment Video

Updated: Jun 3, 2026

Preparation and Use of HIV-1 Infected Primary CD4+ T-Cells as Target Cells in Natural Killer Cell Cytotoxic Assays
12:07

Preparation and Use of HIV-1 Infected Primary CD4+ T-Cells as Target Cells in Natural Killer Cell Cytotoxic Assays

Published on: March 14, 2011

HIV-1-Specific Cytotoxic T-Cell Assays.

J H Cox1

  • 1Henry M. Jackson Foundation, Rockville, MD.

Methods in Molecular Medicine
|March 8, 2011
PubMed
Summary
This summary is machine-generated.

Cytotoxic T-cells (CTL) are crucial for controlling viral infections like HIV-1. Strong CTL responses are observed in individuals who naturally control HIV-1 infection, indicating their protective role.

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Last Updated: Jun 3, 2026

Preparation and Use of HIV-1 Infected Primary CD4+ T-Cells as Target Cells in Natural Killer Cell Cytotoxic Assays
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Published on: March 14, 2011

Cell-based Flow Cytometry Assay to Measure Cytotoxic Activity
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The Use of Fluorescent Target Arrays for Assessment of T Cell Responses In vivo
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Area of Science:

  • Immunology
  • Virology
  • Infectious Diseases

Background:

  • Cytotoxic T-cells (CTL) are vital for adaptive immunity against viral infections.
  • CTL eliminate virus-infected cells through lysis.
  • Evidence suggests CTL play a significant role in host defense against Human Immunodeficiency Virus type 1 (HIV-1).

Purpose of the Study:

  • To investigate the role of CTL in protective immunity against HIV-1.
  • To understand the significance of CTL activity in different HIV-1 infection contexts.

Main Methods:

  • Review of existing evidence on CTL activity in viral infections.
  • Analysis of studies reporting CTL responses in HIV-1 infection.

Main Results:

  • CTL are early responders in immune responses, eliminating infected cells.
  • Strong CTL activity is associated with controlled HIV-1 infection.
  • Elevated CTL responses are observed in non-progressors, exposed uninfected sex workers, and HIV-1-exposed infants.

Conclusions:

  • CTL are a key component of the immune system's defense against HIV-1.
  • The presence of strong CTL activity correlates with better control of HIV-1 infection.
  • Further research into CTL mechanisms could inform HIV-1 therapeutic strategies.