Kaempferol nanoparticles achieve strong and selective inhibition of ovarian cancer cell viability

• Published in: International journal of nanomedicine Vol. 7; no. default; pp. 3951 - 3959
• Main Authors: Luo, Haitao, Jiang, Bingbing, Li, Bingyun, Li, Zhaoliang, Jiang, Bing-Hua, Chen, Yi Charlie
• Format: Journal Article
• Language: English
• Published: New Zealand Taylor & Francis Ltd 01.01.2012; Dove Press; Dove Medical Press
• Subjects: Antineoplastic Agents - chemistry; Antineoplastic Agents - pharmacology; Bioavailability; Cell Line; Cell Line, Tumor; Cell Survival - drug effects; Chemistry, Pharmaceutical; Female; Humans; kaempferol; Kaempferols - chemistry; Kaempferols - pharmacology; Lactic Acid - chemistry; Lactic Acid - pharmacology; nanochemoprevention; Nanoparticles; Nanoparticles - chemistry; natural compound; Original Research; Ovarian cancer; Ovarian Neoplasms - drug therapy; Ovarian Neoplasms - pathology; Ovary - cytology; Ovary - drug effects; Particle Size; Polyethylene Glycols - chemistry; Polyethylene Glycols - pharmacology; Polyglycolic Acid - chemistry; Polyglycolic Acid - pharmacology; Propylene Glycols - chemistry; Propylene Glycols - pharmacology; viability; nanoparticles; kaempferol; nanochemoprevention; ovarian cancer; natural compound; viability
• ISSN: 1178-2013; 1176-9114; 1178-2013
• DOI: 10.2147/IJN.S33670

Ovarian cancer is one of the leading causes of cancer death for women throughout the Western world. Kaempferol, a natural flavonoid, has shown promise in the chemoprevention of ovarian cancer. A common concern about using dietary supplements for chemoprevention is their bioavailability. Nanoparticles have shown promise in increasing the bioavailability of some chemicals. Here we developed five different types of nanoparticles incorporating kaempferol and tested their efficacy in the inhibition of viability of cancerous and normal ovarian cells. We found that positively charged nanoparticle formulations did not lead to a significant reduction in cancer cell viability, whereas nonionic polymeric nanoparticles resulted in enhanced reduction of cancer cell viability. Among the nonionic polymeric nanoparticles, poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) nanoparticles incorporating kaempferol led to significant reduction in cell viability of both cancerous and normal cells. Poly(DL-lactic acid-co-glycolic acid) (PLGA) nanoparticles incorporating kaempferol resulted in enhanced reduction of cancer cell viability together with no significant reduction in cell viability of normal cells compared with kaempferol alone. Therefore, both PEO-PPO-PEO and PLGA nanoparticle formulations were effective in reducing cancer cell viability, while PLGA nanoparticles incorporating kaempferol had selective toxicity against cancer cells and normal cells. A PLGA nanoparticle formulation could be advantageous in the prevention and treatment of ovarian cancers. On the other hand, PEO-PPO-PEO nanoparticles incorporating kaempferol were more effective inhibitors of cancer cells, but they also significantly reduced the viability of normal cells. PEO-PPO-PEO nanoparticles incorporating kaempferol may be suitable as a cancer-targeting strategy, which could limit the effects of the nanoparticles on normal cells while retaining their potency against cancer cells. We have identified two nanoparticle formulations incorporating kaempferol that may lead to breakthroughs in cancer treatment. Both PEO-PPO-PEO and PLGA nanoparticle formulations had superior effects compared with kaempferol alone in reducing cancer cell viability.