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Updated: Jan 25, 2026

Anticancer Efficacy of Photodynamic Therapy with Lung Cancer-Targeted Nanoparticles
Published on: December 1, 2016
YAP inhibition by gloriosine unlocks autophagic cell death as an anticancer strategy in lung malignancies
Biswajit Dey1, Bharat Goel2, Essha Chatterjee1
1Department of Biological Sciences, National Institute of Pharmaceutical Education and Research, Balanagar, 500037, Hyderabad, India; Department of Biotechnology and Bioinformatics, Sambalpur University, Jyoti Vihar, Burla, Sambalpur, 768019, Odisha, India.
Abstract:
Historically, lung cancer has been considered the leading cause of cancer-related death worldwide. Though some of the chemotherapeutic agents show promising outcomes in the ongoing battle against cancer, the overall survival rate for advanced-stage disease remains poor due to drug resistance, toxicity, and limited efficacy. Therefore, new chemotherapeutic agents are required to enhance efficacy, reduce side effects, and combat drug resistance. In the present study, we isolated a compound, gloriosine, and investigated its anticancer potential against different cancer cells, with a special focus on A549 lung adenocarcinoma cells. Treatment with gloriosine resulted in a significant reduction in cell viability in a dose- and time-dependent manner and reduced tumor size in the tumor xenograft model. Interestingly, gloriosine exhibited minimal cytotoxicity on normal cells, indicating its selective activity on cancer cells. Mechanistically, gloriosine induced G2/M cell cycle arrest in A549 cells within an hour of treatment and was found to affect the Hippo signaling pathway, leading to the retention and phosphorylation of the Yes-associated protein (YAP) in the cytoplasm, thereby inhibiting the activation of downstream target genes. This, in turn, led to the suppression of the AKT/mTOR pathway and the activation of autophagy-dependent cell death. These findings suggest that gloriosine could be a promising candidate for the development of new lung cancer therapies.
Insights
Gloriosine shows promise as a new lung cancer therapy, selectively reducing cancer cell viability and tumor size while sparing normal cells. It works by arresting the cell cycle and impacting key signaling pathways.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Lung cancer remains a leading cause of cancer death globally.
- Current therapies face challenges with drug resistance, toxicity, and limited efficacy.
- Novel chemotherapeutic agents are needed to improve treatment outcomes.
Purpose of the Study:
- To investigate the anticancer potential of the isolated compound, gloriosine.
- To evaluate gloriosine's efficacy and mechanism of action against A549 lung adenocarcinoma cells.
- To assess gloriosine's safety profile on normal cells.
Main Methods:
- In vitro cell viability assays on various cancer cell lines, including A549.
- In vivo tumor xenograft studies to assess tumor size reduction.
- Cell cycle analysis and Western blotting to elucidate molecular mechanisms, focusing on the Hippo and AKT/mTOR pathways.
Main Results:
- Gloriosine significantly reduced cancer cell viability and tumor size in a dose- and time-dependent manner.
- Gloriosine demonstrated selective cytotoxicity, with minimal impact on normal cells.
- Mechanistically, gloriosine induced G2/M cell cycle arrest, inhibited the Hippo-YAP pathway, suppressed AKT/mTOR signaling, and activated autophagy-dependent cell death.
Conclusions:
- Gloriosine exhibits potent and selective anticancer activity against lung adenocarcinoma.
- The compound's mechanism involves cell cycle arrest and modulation of critical signaling pathways.
- Gloriosine represents a promising candidate for developing novel lung cancer therapeutics.
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