All-trans retinoic acid decreases susceptibility of a gastric cancer cell line to lymphokine-activated killer cytotoxicity

T. Y. Chao, S. Y. Jiang, R. Y. Shyu, M. Y. Yeh, T. M. Chu

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

All-trans retinoic acid (RA) was previously shown to regulate the growth of gastric cancer cells derived from the cell line SC-M1. This study was designed to investigate the effect of RA on the sensitivity of SC-M1 cells to lymphokine-activated killer (LAK) activity. RA at the concentration range of 0.001-10 μM was shown to induce SC-M1 cells to exhibit resistance to LAK activity in a dose-dependent manner. A kinetics study indicated that a significantly increased resistance was detected after 2 days of co-culturing SC-M1 cells with RA and reached a maximum after 6 days of culture. Similar results were obtained from two other cancer cell lines: promyelocytic leukaemia HL-60 and hepatic cancer Hep 3B. A binding assay demonstrated that the binding efficacy between target SC-M1 cells and effector LAK cells was not altered by RA. Flow cytometric analyses revealed that RA exhibited no effect on the expression of cell surface molecules, including HLA class I and class II antigens, intercellular adhesion molecule-1 and -2, and lymphocyte function antigen-3. Cell cycle analysis revealed that culture of SC-M1 cells with RA resulted in an increase in G0/G1 phase and a decrease in S phase, accompanied by a decrease in cyclin A and cyclin B1 mRNA as determined by Northern blot analysis. Additionally, RA was shown to enhance the expression of retinoic acid receptor α (RARα) in SC-M1 cells, and to have no effect on the expression of RARβ or RARγ. Taken together, these results indicate that RA can significantly increase gastric cancer cells SC-M1 to resist LAK cytotoxicity by means of a cytostatic effect through a mechanism relating to cell cycle regulation. The prevailing ideas, such as a decrease in effector to target cell binding, a reduced MHC class I antigen expression or an altered RARβ expression, are not involved.

Original languageEnglish
Pages (from-to)1284-1290
Number of pages7
JournalBritish Journal of Cancer
Volume75
Issue number9
Publication statusPublished - 1997
Externally publishedYes

Fingerprint

Lymphokines
Tretinoin
Stomach Neoplasms
Cell Line
Retinoic Acid Receptors
Lymphokine-Activated Killer Cells
Cell Cycle
Cyclin B1
Cyclin A
Cell Cycle Resting Phase
Histocompatibility Antigens Class I
Histocompatibility Antigens Class II
G1 Phase
Cytostatic Agents
Intercellular Adhesion Molecule-1
Liver Neoplasms
S Phase
Northern Blotting
Leukemia
Lymphocytes

Keywords

  • All-trans retinoic acid
  • Gastric cancer cell line
  • Lymphokine-activated killer cells

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

All-trans retinoic acid decreases susceptibility of a gastric cancer cell line to lymphokine-activated killer cytotoxicity. / Chao, T. Y.; Jiang, S. Y.; Shyu, R. Y.; Yeh, M. Y.; Chu, T. M.

In: British Journal of Cancer, Vol. 75, No. 9, 1997, p. 1284-1290.

Research output: Contribution to journalArticle

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abstract = "All-trans retinoic acid (RA) was previously shown to regulate the growth of gastric cancer cells derived from the cell line SC-M1. This study was designed to investigate the effect of RA on the sensitivity of SC-M1 cells to lymphokine-activated killer (LAK) activity. RA at the concentration range of 0.001-10 μM was shown to induce SC-M1 cells to exhibit resistance to LAK activity in a dose-dependent manner. A kinetics study indicated that a significantly increased resistance was detected after 2 days of co-culturing SC-M1 cells with RA and reached a maximum after 6 days of culture. Similar results were obtained from two other cancer cell lines: promyelocytic leukaemia HL-60 and hepatic cancer Hep 3B. A binding assay demonstrated that the binding efficacy between target SC-M1 cells and effector LAK cells was not altered by RA. Flow cytometric analyses revealed that RA exhibited no effect on the expression of cell surface molecules, including HLA class I and class II antigens, intercellular adhesion molecule-1 and -2, and lymphocyte function antigen-3. Cell cycle analysis revealed that culture of SC-M1 cells with RA resulted in an increase in G0/G1 phase and a decrease in S phase, accompanied by a decrease in cyclin A and cyclin B1 mRNA as determined by Northern blot analysis. Additionally, RA was shown to enhance the expression of retinoic acid receptor α (RARα) in SC-M1 cells, and to have no effect on the expression of RARβ or RARγ. Taken together, these results indicate that RA can significantly increase gastric cancer cells SC-M1 to resist LAK cytotoxicity by means of a cytostatic effect through a mechanism relating to cell cycle regulation. The prevailing ideas, such as a decrease in effector to target cell binding, a reduced MHC class I antigen expression or an altered RARβ expression, are not involved.",
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