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Expression of membrane-associated lymphotoxin/tumor necrosis factor-beta on human lymphokine-activated killer cells

Y Abe1, M Miyake, A Horiuchi

  • 1Second Department of Surgery, Ehime University School of Medicine.

Japanese Journal of Cancer Research : Gann
|January 1, 1991
PubMed

Insights

Researchers detected a lymphotoxin (LT)-related molecule on human lymphokine-activated killer (LAK) cells. This molecule appeared after 9 hours of culture and had an estimated molecular weight of 31 kD or 62 kD.

Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Lymphokine-activated killer (LAK) cells are crucial in cellular immunity.
  • The role of membrane-associated molecules on LAK cells is an area of ongoing research.

Purpose of the Study:

  • To investigate the presence and characteristics of lymphotoxin (LT)-related molecules on human LAK cells.

Main Methods:

  • Flow cytometry was used to detect LT antigenicity on LAK cells.
  • Kinetic analysis tracked the appearance of LT antigenicity over time.
  • Autoradiography was employed to estimate the molecular weight of the membrane-associated LT.

Main Results:

  • A membrane-associated LT-related molecule was identified on human LAK cells.
  • LT antigenicity emerged at 9 hours post-culture initiation and persisted.
  • The molecular weight of membrane LT was estimated at 31 kD and/or 62 kD.

Conclusions:

  • Human LAK cells express a membrane-associated LT-related molecule.
  • The kinetics and molecular weight provide insights into the nature of this molecule on LAK cells.

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