Abstract |
By secreting granulocyte-macrophage colony-stimulating factor ( GM-CSF), Lewis lung carcinoma tumors induce immune suppressive granulocyte-macrophage progenitor cells. Treating mice having established tumors and high levels of suppressor activity with vitamin D3 eliminated suppressor activity, increased anti- tumor immunity, induced an immune stimulatory cell population, and reduced tumor growth. When instead, the vitamin D3 treatment was initiated earlier, when implanted tumors first became detectable and when natural suppressor activity was less prominent, the treatment had no effect. Thus, vitamin D3 treatment can stimulate the immune competence of tumor bearers when treatment is targeted to coincide with a heightened presence of GM-CSF-induced suppressor cells.
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Authors | M R Young, Y Lozano, J Ihm, M A Wright, M M Prechel |
Journal | Cancer letters
(Cancer Lett)
Vol. 104
Issue 2
Pg. 153-61
(Jul 12 1996)
ISSN: 0304-3835 [Print] Ireland |
PMID | 8665483
(Publication Type: Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, U.S. Gov't, P.H.S.)
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Chemical References |
- Adjuvants, Immunologic
- Cholecalciferol
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Topics |
- Adjuvants, Immunologic
(pharmacology)
- Animals
- Carcinoma, Lewis Lung
(immunology, pathology)
- Cell Division
(drug effects)
- Cholecalciferol
(pharmacology)
- Hematopoietic Stem Cells
(physiology)
- Lymph Nodes
(pathology)
- Mice
- Mice, Inbred C57BL
- T-Lymphocytes, Regulatory
(physiology)
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