In vitro effect of retinol and 13-cis retinoic acid on cytotoxicity of human monocytes

Satoru Moriguchi, Masatoshi Kohge, Yasuo Kishino, Ronald R Watson

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Human monocytes (HM) obtained from healthy nonsmoking donors were rendered tumoricidal activity following 24 hr-incubation in vitro with retinol (RL) or 13-cis retinoic acid(13cRA). HM treated with medium only did not kill tumor cells. Maximum tumoricidal activity of HM, as measured by lysis of 125I-iododeoxyuridine labeled C83-2C human melanoma cells, was obtained after incubation with 10-8M of RL or 10-6M of 13cRA for 24 hr. Tumoricidal activity rendered by incubation in vitro with RL or 13cRA cell to half of maximum activity following further incubation in vitro with medium only for 24 hr. Pretreatment of HM with 10-8M of RL for 0 to 24 hr did not interfere the activation of macrophage activating factor (MAF) against HM and did induce the enhancement of tumoricidal activity of HM rather than that of MAF only. We conclude that RL and 13cRA could induce HM to become tumoricidal. This may help to explain greater cancer prevention of vitamin A and its derivatives.

Original languageEnglish (US)
Pages (from-to)255-264
Number of pages10
JournalNutrition Research
Volume8
Issue number3
DOIs
StatePublished - 1988

Fingerprint

Isotretinoin
Vitamin A
Monocytes
Macrophage-Activating Factors
Human Activities
Idoxuridine
In Vitro Techniques
Melanoma
Neoplasms

Keywords

  • 13-cis retinoic acid
  • cytotoxicity
  • monocytes
  • retinol

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics

Cite this

In vitro effect of retinol and 13-cis retinoic acid on cytotoxicity of human monocytes. / Moriguchi, Satoru; Kohge, Masatoshi; Kishino, Yasuo; Watson, Ronald R.

In: Nutrition Research, Vol. 8, No. 3, 1988, p. 255-264.

Research output: Contribution to journalArticle

Moriguchi, Satoru ; Kohge, Masatoshi ; Kishino, Yasuo ; Watson, Ronald R. / In vitro effect of retinol and 13-cis retinoic acid on cytotoxicity of human monocytes. In: Nutrition Research. 1988 ; Vol. 8, No. 3. pp. 255-264.
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N2 - Human monocytes (HM) obtained from healthy nonsmoking donors were rendered tumoricidal activity following 24 hr-incubation in vitro with retinol (RL) or 13-cis retinoic acid(13cRA). HM treated with medium only did not kill tumor cells. Maximum tumoricidal activity of HM, as measured by lysis of 125I-iododeoxyuridine labeled C83-2C human melanoma cells, was obtained after incubation with 10-8M of RL or 10-6M of 13cRA for 24 hr. Tumoricidal activity rendered by incubation in vitro with RL or 13cRA cell to half of maximum activity following further incubation in vitro with medium only for 24 hr. Pretreatment of HM with 10-8M of RL for 0 to 24 hr did not interfere the activation of macrophage activating factor (MAF) against HM and did induce the enhancement of tumoricidal activity of HM rather than that of MAF only. We conclude that RL and 13cRA could induce HM to become tumoricidal. This may help to explain greater cancer prevention of vitamin A and its derivatives.

AB - Human monocytes (HM) obtained from healthy nonsmoking donors were rendered tumoricidal activity following 24 hr-incubation in vitro with retinol (RL) or 13-cis retinoic acid(13cRA). HM treated with medium only did not kill tumor cells. Maximum tumoricidal activity of HM, as measured by lysis of 125I-iododeoxyuridine labeled C83-2C human melanoma cells, was obtained after incubation with 10-8M of RL or 10-6M of 13cRA for 24 hr. Tumoricidal activity rendered by incubation in vitro with RL or 13cRA cell to half of maximum activity following further incubation in vitro with medium only for 24 hr. Pretreatment of HM with 10-8M of RL for 0 to 24 hr did not interfere the activation of macrophage activating factor (MAF) against HM and did induce the enhancement of tumoricidal activity of HM rather than that of MAF only. We conclude that RL and 13cRA could induce HM to become tumoricidal. This may help to explain greater cancer prevention of vitamin A and its derivatives.

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