Antitumor Compounds from Dioscorea nipponica Makino subsp. rosthornii in A549 Cells

Overview

This study identified key antitumor compounds from Dioscorea nipponica Makino subsp. rosthornii that inhibit proliferation, migration, and invasion of A549 lung cancer cells. Spectrum-effect relationship analysis highlighted protodioscin, diosgenin, and gracillin as active constituents, which modulate expression of metastasis-related proteins.

Background

Lung cancer remains a leading cause of cancer mortality worldwide, with tumor cell proliferation and metastasis driving disease progression. Traditional Chinese medicine offers promising sources of anticancer agents with multifaceted mechanisms and low toxicity. Dioscorea species contain steroidal saponins known for antitumor effects, but the specific active compounds in D. nipponica Makino subsp. rosthornii and their mechanisms require elucidation. Spectrum-effect relationship analysis enables correlation of chemical fingerprints with bioactivity to identify active constituents efficiently.

Data Highlights

Key Findings

• UPLC-QTOF-MS identified 23 distinct chemical constituents in 12 batches of D. nipponica Makino subsp. rosthornii.
• Extracts significantly inhibited proliferation, migration, and invasion of A549 lung cancer cells in vitro.
• Spectrum-effect relationship analysis correlated chromatographic peaks with antitumor activity, pinpointing protodioscin, diosgenin, and gracillin as active compounds.
• These steroidal saponins reduced expression of pro-metastatic proteins N-cadherin and MMP2, while increasing E-cadherin expression.
• The dual regulatory mechanism suggests inhibition of malignant phenotypes via modulation of epithelial-mesenchymal transition markers.

Clinical Implications

The identification of protodioscin, diosgenin, and gracillin as active antitumor agents supports the potential use of D. nipponica Makino subsp. rosthornii extracts in lung cancer therapy. Their ability to inhibit key processes in tumor progression and metastasis highlights their promise as complementary agents targeting epithelial-mesenchymal transition pathways. Further clinical studies are warranted to validate efficacy and safety in patients.

Conclusion

This study elucidated the chemical basis and mechanisms underlying the antitumor effects of D. nipponica Makino subsp. rosthornii, providing scientific evidence for its potential application in cancer treatment. The identified steroidal saponins represent promising candidates for development as anticancer agents.

References

1. Authors/Source/Year -- Evaluation and Mechanistic Investigation of Antitumor Compounds from Dioscorea nipponica Makino subsp. rosthornii