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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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The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
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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.
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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...
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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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Flow Cytometry-based Assay for the Monitoring of NK Cell Functions
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NKT Cell Responses to B Cell Lymphoma.

Junxin Li1, Wenji Sun1, Priyanka B Subrahmanyam1

  • 1Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.

Medical Sciences (Basel, Switzerland)
|June 24, 2014
PubMed
Summary

Natural killer T (NKT) cells show promise in fighting B cell lymphoma. While impaired in advanced disease, activating NKT cells with agonists like α-galactosylceramide (α-GalCer) reduced lymphoma pathology in mice.

Keywords:
CD1dNKT cellsmantle cell lymphomamouse models of lymphomaα-galactosylceramide

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Area of Science:

  • Immunology
  • Hematology
  • Oncology

Background:

  • Natural killer T (NKT) cells are crucial for tumor immune surveillance.
  • NKT cells are often reduced and impaired in lymphoma patients.
  • Hematologic malignancies can express CD1d, a molecule recognized by NKT cells.

Purpose of the Study:

  • To investigate NKT cell responses to B cell lymphoma.
  • To explore the therapeutic potential of NKT cell agonists in lymphoma.

Main Methods:

  • Stimulation of mouse and human NKT cell lines with B cell lymphoma lines.
  • Ex vivo examination of NKT cell populations in spontaneous B cell lymphoma mouse models.
  • Treatment of mantle cell lymphoma mouse models with α-galactosylceramide (α-GalCer).

Main Results:

  • NKT cell lines produced cytokines upon stimulation by lymphoma cells.
  • NKT cell responses were enhanced in early stages of lymphoma but impaired in advanced stages with organ enlargement.
  • α-GalCer treatment significantly reduced mantle cell lymphoma pathology in mice.
  • NKT cells from α-GalCer treated mice produced IFN-γ upon restimulation.

Conclusions:

  • NKT cells play a significant role in the immune response against B cell lymphoma.
  • Targeting NKT cells with agonists like α-GalCer may be a viable therapeutic strategy for mantle cell lymphoma.