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Related Experiment Videos

Human natural killer cell function and receptors.

L Moretta1, C Bottino, C Cantoni

  • 1Istituto Giannina Gaslini, Genova, Italy. lorenzomoretta@ospedale-gaslini.ge.it

Current Opinion in Pharmacology
|November 17, 2001
PubMed
Summary
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Natural killer (NK) cell research has advanced, revealing molecular mechanisms of NK cell function and cytotoxicity. Studies elucidated the roles of activating receptors, MHC class I interactions, and viral evasion strategies.

Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • Significant progress has been made in understanding natural killer (NK) cell molecular regulation.
  • Discoveries include receptors for major histocompatibility complex (MHC) class I and activating receptors for natural cytotoxicity.

Purpose of the Study:

  • To detail the evolution of MHC-specific inhibitory receptors through comparative analysis.
  • To define the roles of activating natural cytotoxicity receptors like NKG2D and coreceptors in tumor lysis.
  • To elucidate the mechanism of 2B4 coreceptor dysfunction in X-linked lymphoproliferative disease and Epstein-Barr virus control.

Main Methods:

  • Comparative analysis across species to define receptor evolution.
  • Detailed functional studies on NKG2D and coreceptors in tumor cell lysis.

Related Experiment Videos

  • Mechanistic investigations into the 2B4 coreceptor's role in viral control.

    • Main Results:

    • Evolutionary pathways of MHC-specific inhibitory receptors elucidated.
    • Detailed roles of NKG2D and coreceptors in tumor lysis defined.
    • Mechanism of 2B4 coreceptor-mediated susceptibility to Epstein-Barr virus infection clarified.
    • Expression and function of NK cell inhibitory receptors in myeloid cells identified.
    • Viral strategies, such as cytomegalovirus, to evade NK cell attack revealed.

    Conclusions:

    • NK cell function is regulated by a complex interplay of inhibitory and activating receptors.
    • Dysregulation of these receptors has implications for diseases like X-linked lymphoproliferative disease and cancer.
    • Pathogens have evolved mechanisms to subvert NK cell immunity.