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Valpha14 NKT cell-mediated anti-tumor responses and their clinical application

Ken-Ichiro Seino1, Shin-Ichiro Fujii, Michishige Harada

  • 1Laboratory for Immune Regulation, RIKEN Research Center for Allergy and Immunology, Suehiro-cho 1-7-22, Tsurumi, 230-0045 Yokohama, Kanagawa, Japan.

Springer Seminars in Immunopathology
|January 15, 2005
PubMed

Insights

Valpha14 Natural Killer T (NKT) cells are crucial for anti-tumor immunity. Alpha-galactosylceramide (alpha-GalCer) activates these cells, showing promise for cancer immunotherapy, with clinical trials underway.

Area of Science:

  • Immunology
  • Oncology
  • Immunotherapy

Background:

  • Valpha14 Natural Killer T (NKT) cells play a significant role in anti-tumor immune responses.
  • Activation of Valpha14 NKT cells influences dendritic cells (DCs), NK cells, CD4 Th1 cells, and CD8 cytotoxic T cells.
  • This activation enhances the NKT cell-mediated cellular cascade against tumors.

Purpose of the Study:

  • To review the Valpha14 NKT cell-mediated anti-tumor response in mice.
  • To discuss the clinical applications of alpha-galactosylceramide (alpha-GalCer)-pulsed DC therapy.

Main Methods:

  • Review of existing literature on Valpha14 NKT cells and anti-tumor immunity.
  • Analysis of the mechanism of alpha-GalCer in stimulating NKT cells.
  • Discussion of clinical trial data and potential therapeutic strategies.

Main Results:

  • Valpha14 NKT cells are integral to innate and acquired immune responses against tumors.
  • Alpha-galactosylceramide (alpha-GalCer) is a potent activator of both mouse and human NKT cells.
  • Clinical trials investigating alpha-GalCer are ongoing globally.

Conclusions:

  • Valpha14 NKT cells represent a promising target for cancer immunotherapy.
  • Alpha-galactosylceramide-pulsed DC therapy holds potential for clinical application in cancer treatment.

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