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Alantolactone inhibits T-cell lymphoma progression by suppressing CD47 expression via the PI3K/AKT and ERK signaling
Xiaodong Li1,2, Ningbo Pang3, Yingcong Chen1,2
1Precision Medicine Center, The Affiliated Lihuili Hospital of Ningbo University, 57 Xingning Road, Ningbo, 315000, China.
Abstract:
T-cell lymphoma (TCL) is a malignant tumor caused by abnormal proliferation of T cells, and its specific pathogenesis remains unclear. Currently, there is still a lack of highly effective therapeutic agents in clinic. As a semi-terpene lactone compound, Alantolactone (ATL) is mainly used to treat diseases such as asthma, and its role in TCL has not been revealed. Here we systematically demonstrated that ATL not only significantly inhibits proliferation, migration, and induces apoptosis in TCL cells in vitro, but also exhibits significant anti-tumor effects in TCL cell line xenograft models with no obvious drug toxicity. Notably, ATL markedly enhance the sensitivity of TCL cells to first-line chemotherapeutic agents such as decitabine. Mechanistically, multi-omics analysis confirmed that ATL restricts TCL progression by negatively regulating the PI3K/AKT and ERK signaling pathway. Additionally, our study also found that ATL-mediated suppression of these pathways leads to significant downregulation of CD47 expression through reducing transcriptional factor c-Myc levels, which in turn enhance the phagocytosis of TCL cells by macrophages. It underscores the potential application of ATL in the immunotherapy of TCL. In summary, our study elucidates that ATL exhibits significant anti-TCL effects both in vitro and in vivo, suggesting its potential as a novel clinical strategy for the treatment of TCL.
Insights
Alantolactone (ATL) inhibits T-cell lymphoma (TCL) growth and enhances chemotherapy sensitivity. This compound shows potential for TCL immunotherapy by promoting macrophage phagocytosis.
Area of Science:
- Oncology
- Immunology
- Pharmacology
Background:
- T-cell lymphoma (TCL) is a significant clinical challenge with unclear pathogenesis and limited effective treatments.
- Alantolactone (ATL), a semi-terpene lactone, has shown therapeutic potential in other conditions but its role in TCL is unexplored.
Purpose of the Study:
- To investigate the anti-cancer effects of Alantolactone (ATL) on T-cell lymphoma (TCL).
- To explore the underlying mechanisms of ATL's action in TCL, including its impact on signaling pathways and drug sensitivity.
Main Methods:
- In vitro studies on TCL cell proliferation, migration, and apoptosis.
- In vivo xenograft models to assess anti-tumor efficacy and toxicity.
- Multi-omics analysis to elucidate molecular mechanisms, including signaling pathway regulation and CD47 expression.
Main Results:
- ATL significantly inhibited TCL cell proliferation and migration while inducing apoptosis in vitro.
- ATL demonstrated significant anti-tumor effects in vivo with no obvious toxicity.
- ATL enhanced TCL cell sensitivity to decitabine and other chemotherapeutic agents.
- Mechanistically, ATL suppressed PI3K/AKT and ERK signaling, downregulating CD47 via c-Myc, thereby enhancing macrophage phagocytosis.
Conclusions:
- Alantolactone (ATL) exhibits potent anti-TCL activity both in vitro and in vivo.
- ATL holds promise as a novel therapeutic agent for T-cell lymphoma, potentially in combination therapies and immunotherapy.
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