Related Experiment Videos
Melittin inhibits the invasion of MCF-7 cells by downregulating CD147 and MMP-9 expression
Jianjun Wang1, Fengyu Li1, Jiang Tan1
1Laboratory of Molecular and Cellular Physiology, School of Life Science, Northeast Normal University, Changchun, Jilin 130024, P.R. China.
Abstract:
Tumor invasion and metastasis are the critical steps in determining the aggressive phenotype of human cancers. Melittin, a major component of bee venom, has been reported to induce apoptosis in several cancer cells. However, the mechanisms of melittin involvement in cancer invasion and metastasis remain unclear. Our previous study indicated that melittin inhibits cyclophilin A (CypA), a ubiquitously distributed peptidylprolyl cis-trans isomerase, in macrophage cells. In the present study, the Transwell assay results showed that melittin may downregulate the invasion level of MCF-7 cells in a dose-dependent manner. Additionally, it was also found, using flow cytometry and reverse transcription-polymerase chain reaction, that melittin decreased the expression of cluster of differentiation (CD)147 and matrix metallopeptidase-9 (MMP-9), whereas CypA upregulated the expression of CD147 and MMP-9. Overall, the present study indicated that melittin decreased the invasion level of MCF-7 cells by downregulating CD147 and MMP-9 by inhibiting CypA expression. The results of the present study provide an evidence for melittin in anticancer therapy and mechanisms.
Insights
Melittin, from bee venom, reduces cancer cell invasion by inhibiting cyclophilin A (CypA). This mechanism involves downregulating cluster of differentiation (CD)147 and matrix metallopeptidase-9 (MMP-9) expression, offering potential for anticancer therapy.
Area of Science:
- Oncology
- Pharmacology
- Biochemistry
Background:
- Tumor invasion and metastasis are key factors in aggressive cancers.
- Melittin, a bee venom component, induces apoptosis in cancer cells.
- The precise mechanisms of melittin's action on cancer invasion and metastasis are not fully understood.
Purpose of the Study:
- To investigate the effect of melittin on cancer cell invasion.
- To elucidate the molecular mechanisms underlying melittin's anti-invasion activity.
- To explore the role of cyclophilin A (CypA) in melittin's effects on cancer cells.
Main Methods:
- Transwell invasion assays were used to assess cell invasion.
- Flow cytometry and reverse transcription-polymerase chain reaction (RT-PCR) were employed to analyze gene expression.
- The study focused on MCF-7 breast cancer cells.
Main Results:
- Melittin significantly downregulated the invasion of MCF-7 cells in a dose-dependent manner.
- Melittin decreased the expression of cluster of differentiation (CD)147 and matrix metallopeptidase-9 (MMP-9).
- Cyclophilin A (CypA) was found to upregulate CD147 and MMP-9 expression, and melittin inhibited CypA.
Conclusions:
- Melittin inhibits cancer cell invasion by downregulating CD147 and MMP-9 through the inhibition of CypA.
- These findings provide evidence for melittin's potential as an anticancer therapeutic agent.
- The study clarifies the molecular mechanisms of melittin's anti-metastatic effects.