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Published on: May 15, 2019
Caspase-8: Friend or Foe in Bortezomib/Lenalidomide-Based Therapy for Myeloma
1Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
Abstract:
Antiproliferation and proapoptosis are two major molecular mechanisms of action of drugs used for the treatment of multiple myeloma. Proteasome inhibitors, such as bortezomib (PS-341), and immunomodulatory drugs (IMiDs), such as lenalidomide, are the two drug types approved for the treatment of myeloma. Bortezomib and lenalidomide activate caspase-8 and promote the apoptosis of myeloma cells. However, caspase-8 inhibition potentiated the antiproliferative effect of lenalidomide and bortezomib in myeloma cells, suggesting that caspase-8 could regulate proliferation and apoptosis in the opposite pathway. In this mini-review, I summarized recent advances in determining the molecular mechanisms of caspase-8 in bortezomib-lenalidomide-based therapy for myeloma and explored the possible functions of caspase-8 in the proliferation and apoptosis of myeloma cells. Furthermore, future directions of caspase-8-based therapy for myeloma have been discussed.
Insights
Caspase-8 plays a dual role in multiple myeloma treatment. While it promotes apoptosis, inhibiting it enhances the antiproliferative effects of bortezomib and lenalidomide.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Multiple myeloma is treated with drugs targeting proliferation and apoptosis.
- Bortezomib (proteasome inhibitor) and lenalidomide (immunomodulatory drug) are key therapies.
- These drugs activate caspase-8, inducing myeloma cell apoptosis.
Purpose of the Study:
- To review molecular mechanisms of caspase-8 in bortezomib-lenalidomide therapy for multiple myeloma.
- To explore caspase-8's roles in myeloma cell proliferation and apoptosis.
- To discuss future directions for caspase-8-based multiple myeloma treatment.
Main Methods:
- Literature review of recent advances.
- Analysis of molecular mechanisms.
- Exploration of caspase-8 functions in myeloma cells.
Main Results:
- Bortezomib and lenalidomide activate caspase-8, promoting myeloma cell apoptosis.
- Caspase-8 inhibition potentiated the antiproliferative effects of these drugs.
- This suggests caspase-8 regulates proliferation and apoptosis via opposing pathways.
Conclusions:
- Caspase-8 has a complex role in multiple myeloma therapy.
- Targeting caspase-8 may offer novel therapeutic strategies.
- Further research is needed to elucidate caspase-8's full potential in myeloma treatment.
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