Study on the biological activity and molecular mechanism of IFNalpha on human myeloma cell line Sko-007 / 中华血液学杂志
Chinese Journal of Hematology
; (12): 517-519, 2002.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-261391
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the biological activity and molecular mechanism of interferon alpha (IFNalpha) on human myeloma cell line Sko-007.</p><p><b>METHODS</b>The effect of IFNalpha on the growth of Sko-007 cells was measured by MTT assay. Cells cycle distribution and the expression of two IL-6 receptor chains (IL-6R and gp130) on Sko-007 cell surface in the absence or presence of IFNalpha were monitored by FACS analysis. The activation state of protein kinase ERK, which is involved in Ras/MAPK signal transduction pathway mediating cell survival and proliferation, and the expression of anti-apoptotic Bcl-2 family proteins-Bcl-2, Bcl-x(L) and Mcl-1 in Sko-007 cells with or without IFNalpha were determined by immunoblot assay.</p><p><b>RESULT</b>IFNalpha arrested Sko-007 cell cycle progression. After stimulation with IFNalpha, an obvious increase in G(0)/G(1) phase (41.1%-->84.1%) and decrease in S phase (57.1%-->13.3%) of Sko-007 cell cycle distribution can be observed. Moreover, the proliferation of Sko-007 cells was dramatically inhibited in the presence of IFNalpha, with a maximal inhibitory rate up to 88%. In addition, the expression of gp130 on cell surface, the activation of protein kinase ERK and the expression of Bcl-2 and Bcl-x(L) were all down-regualted in IFNalpha-stimulated Sko-007 cells.</p><p><b>CONCLUSION</b>The inhibitory effect of IFNalpha on the proliferation of Sko-007 cells was mediated by gp130 down-regulation, degradation of Bcl-2 family anti-apoptotic proteins and inhibition of ERK activation.</p>
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Pathology
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Pharmacology
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Membrane Glycoproteins
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Tumor Cells, Cultured
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Immunoblotting
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Antigens, CD
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Down-Regulation
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Cell Cycle
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Cell Division
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Resting Phase, Cell Cycle
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Hematology
Year:
2002
Document type:
Article