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The nuclear export protein exportin-1 in solid malignant tumours: From biology to clinical trials
Chuanxi Lai1,2, Lingna Xu1,2, Sheng Dai1,2
1Department of Colorectal Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
Background:
Exportin-1 (XPO1), a crucial protein regulating nuclear-cytoplasmic transport, is frequently overexpressed in various cancers, driving tumor progression and drug resistance. This makes XPO1 an attractive therapeutic target. Over the past few decades, the number of available nuclear export-selective inhibitors has been increasing. Only KPT-330 (selinexor) has been successfully used for treating haematological malignancies, and KPT-8602 (eltanexor) has been used for treating haematologic tumours in clinical trials. However, the use of nuclear export-selective inhibitors for the inhibition of XPO1 expression has yet to be thoroughly investigated in clinical studies and therapeutic outcomes for solid tumours.
Methods:
We collected numerous literatures to explain the efficacy of XPO1 Inhibitors in preclinical and clinical studies of a wide range of solid tumours.
Results:
In this review, we focus on the nuclear export function of XPO1 and results from clinical trials of its inhibitors in solid malignant tumours. We summarized the mechanism of action and therapeutic potential of XPO1 inhibitors, as well as adverse effects and response biomarkers.
Conclusion:
XPO1 inhibition has emerged as a promising therapeutic strategy in the fight against cancer, offering a novel approach to targeting tumorigenic processes and overcoming drug resistance. SINE compounds have demonstrated efficacy in a wide range of solid tumours, and ongoing research is focused on optimizing their use, identifying response biomarkers, and developing effective combination therapies.
Key Points:
Exportin-1 (XPO1) plays a critical role in mediating nucleocytoplasmic transport and cell cycle. XPO1 dysfunction promotes tumourigenesis and drug resistance within solid tumours. The therapeutic potential and ongoing researches on XPO1 inhibitors in the treatment of solid tumours. Additional researches are essential to address safety concerns and identify biomarkers for predicting patient response to XPO1 inhibitors.
Insights
Exportin-1 (XPO1) inhibitors show promise for treating solid tumors by blocking nuclear export. Further research is needed to optimize their use and identify patient response biomarkers.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Exportin-1 (XPO1) is overexpressed in various cancers, driving tumor progression and resistance.
- XPO1 regulates nuclear-cytoplasmic transport, making it a therapeutic target.
- Existing XPO1 inhibitors have shown success in hematological malignancies, but their use in solid tumors requires further investigation.
Purpose of the Study:
- To review the efficacy of XPO1 inhibitors in preclinical and clinical studies of solid tumors.
- To summarize the mechanism of action, therapeutic potential, and adverse effects of XPO1 inhibitors.
- To highlight ongoing research and the need for biomarkers in solid tumor treatment.
Main Methods:
- Comprehensive literature review of XPO1 inhibitors in solid tumors.
- Analysis of preclinical and clinical trial data.
- Summary of XPO1's role in cancer and inhibitor mechanisms.
Main Results:
- XPO1 inhibitors demonstrate therapeutic potential in a range of solid tumors.
- Clinical trials show varying responses and identified adverse effects.
- Mechanism of action involves inhibiting XPO1's nuclear export function.
Conclusions:
- XPO1 inhibition is a promising strategy for solid tumors, offering a novel approach to overcome drug resistance.
- SINE compounds show efficacy in solid tumors, with ongoing research focusing on optimization and combination therapies.
- Further research is essential to address safety concerns and identify predictive biomarkers for patient response.
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