Regulatory effect of thalidomide on the expression of costimulatory molecules in patients with multiple myeloma / 南方医科大学学报
Journal of Southern Medical University
; (12): 2470-2476, 2009.
Article
在 Zh
| WPRIM
| ID: wpr-325088
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the expression of B7 co-stimulatory molecules in human multiple myeloma (MM) and the immunoregulatory effects of thalidomide on B7.1 co-stimulator.</p><p><b>METHODS</b>The immunoregulatory effects of thalidomide on the expression of B7-1 in human MM cell line was examined by detecting the changes in the expression of B7 co-stimulator on the cells using flow cytometry following the drug treatment.</p><p><b>RESULTS</b>The expression of B7.1 co-stimulator was lowly expressed in human MM cell line and MM patients, with a positivity rate of 0.8 and (2.19-/+2.13) for B7.1 and a rate of 26.4 and (30.28-/+28.11) for B7.2, respectively. Compared with the control group, the thalidomide-treated cells showed significantly increased percentage of CD-80 positive cells in a dose-dependent manner (but not at 0.1 microg/ml) (P<0.01), with the highest percentage reaching (17.7-/+1.53)% at thalidomide concentration of 5 microg/ml.</p><p><b>CONCLUSION</b>MM cells express low or undetectable levels of B7.1. Thalidomide can up-regulate the expression of B7-1 molecules on myeloma cells, which is probably one of the therapeutic mechanisms of thalidomide.</p>
全文:
1
索引:
WPRIM
主要主题:
Pathology
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Thalidomide
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Gene Expression Regulation, Neoplastic
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Up-Regulation
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B7-1 Antigen
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Cell Line, Tumor
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Therapeutic Uses
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Drug Therapy
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Allergy and Immunology
/
Metabolism
限制:
Adult
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Aged
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Aged80
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Female
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Humans
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Male
语言:
Zh
期刊:
Journal of Southern Medical University
年:
2009
类型:
Article