[Molecular Mechanism of Busulfan Inhibiting the Malignant Biological Characteristics of Multiple Myeloma Cells].

OBJECTIVE

To investigate the effect of Busulfan on the malignant biological characteristics of multiple myeloma cells and explore the molecular mechanism.

METHODS

Multiple myeloma RPMI8226 cells were treated with Busulfan at different concentrations. Cell proliferation activity was detected by MMT assay, and cell apoptosis was detected by flow cytometry with Annexin V/PI double staining. Real-time quantitative PCR was used to detect the mRNA expression of apoptotic regulatory molecules Bax、Bcl-2 and Wnt3a/β-catenin pathway, and Western blot was used to detect the expression changes of Bax, Bcl-2 and Wnt3a/β-catenin pathway protein.

RESULTS

Busulfan inhibited cell proliferation and induced apoptosis of myeloma RPMI8226 cells (P<0.05). After treatment with Busulfan at different concentrations for 48 h, the expression of anti-apoptotic protein Bcl-2 was decreased, the expression of pro-apoptotic protein Bax was up-regulated, and the activation of Wnt3a/β-catenin signaling pathway was inhibited to induce programmed death of RPMI8226 cells (P<0.05).

CONCLUSION

Busulfan can inhibit the malignant biological characteristics of myeloma RPMI 8226 cells, and its mechanism may be related to regulating the expression of Bcl-2 family proteins and inhibiting the activation of Wnt3a/β-catenin signaling pathway.