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Published on: February 20, 2018
Glioma and Neurokinin-1 Receptor Antagonists: A New Therapeutic Approach
Miguel Muñoz1, Rafael Coveñas2
1Virgen del Rocío University Hospital, Research Laboratory on Neuropeptides (IBIS), Seville, Spain.
Background:
In adults, the most lethal and frequent primary brain tumor is glioblastoma. Despite multimodal aggressive therapies, the median survival time after diagnosis is around 15 months. In part, this is due to the blood-brain barrier that restricts common treatments (e.g., chemotherapy). Unfortunately, glioma recurs in 90% of patients. New therapeutic strategies against glioma are urgently required. Substance P (SP), through the neurokinin (NK)-1 receptor, controls cancer cell proliferation by activating c-myc, mitogenactivated protein kinases, activator protein 1 and extracellular signal-regulated kinases 1 and 2. Glioma cells overexpress NK-1 receptors when compared with normal cells. The NK-1 receptor/SP system regulates the proliferation/migration of glioma cells and stimulates angiogenesis, triggering inflammation which contributes to glioma progression. In glioma cells, SP favors glycogen breakdown, essential for glycolysis. By contrast, in glioma, NK-1 receptor antagonists block the proliferation of tumor cells and the breakdown of glycogen and also promote the death (apoptosis) of these cells. These antagonists also inhibit angiogenesis and exert antimetastatic and anti-inflammatory actions.
Objective:
This review updates the involvement of the NK-1 receptor/SP system in the development of glioma and the potential clinical application of NK-1 receptor antagonists as antiglioma agents.
Conclusion:
The NK-1 receptor plays a crucial role in glioma and NK-1 receptor antagonists could be used as anti-glioma drugs.
Insights
New research highlights the critical role of the neurokinin (NK)-1 receptor/Substance P (SP) system in glioblastoma development. NK-1 receptor antagonists show promise as novel anti-glioma drugs, offering potential new treatments.
Area of Science:
- Neuro-oncology
- Molecular Biology
- Pharmacology
Background:
- Glioblastoma is a lethal primary brain tumor with poor prognosis despite aggressive therapies.
- The blood-brain barrier limits conventional chemotherapy efficacy, leading to high recurrence rates.
- The neurokinin (NK)-1 receptor/Substance P (SP) system is implicated in glioma progression, with glioma cells overexpressing NK-1 receptors.
Purpose of the Study:
- To review the involvement of the NK-1 receptor/SP system in glioma development.
- To explore the potential of NK-1 receptor antagonists as therapeutic agents against glioma.
Main Methods:
- Literature review focusing on the molecular mechanisms of NK-1 receptor signaling in glioma.
- Analysis of studies investigating the effects of NK-1 receptor antagonists on glioma cell behavior.
Main Results:
- The NK-1 receptor/SP system promotes glioma cell proliferation, migration, angiogenesis, and inflammation.
- SP facilitates glycogen breakdown for glycolysis in glioma cells.
- NK-1 receptor antagonists inhibit glioma cell proliferation, glycogenolysis, and angiogenesis, while promoting apoptosis.
Conclusions:
- The NK-1 receptor plays a significant role in glioma pathogenesis.
- NK-1 receptor antagonists represent a promising therapeutic strategy for combating glioma.
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