Journal
INTERNATIONAL JOURNAL OF NANOMEDICINE
Volume 14, Issue -, Pages 1177-1191Publisher
DOVE MEDICAL PRESS LTD
DOI: 10.2147/IJN.S184792
Keywords
hydroxyapatite; nanoparticles; melanoma cells; fibroblasts; viability; apoptosis; tumor; suppression
Funding
- National Key Research and Development Program of China [2017YFB0702600, 2017YFB0702603]
- National Natural Science Foundation of China [81801852]
- 111 Project of China [B16033]
Ask authors/readers for more resources
Background: Treatment for melanoma is a challenging clinical problem, and some new strategies are worth exploring. Purpose: The objective of this study was to investigate the in vitro and in vivo anti-melanoma effects of hydroxyapatite nanoparticles (HANPs) and discuss the involved material factors. Materials and methods: Five types of HANPs, ie, HA-A, HA-B, HA-C, HA-D, and HA-E, were prepared by wet chemical method combining with polymer template and appropriate post-treatments. The in vitro effects of the as-prepared five HANPs on inhibiting the viability of A375 melanoma cells and inducing the apoptosis of the cells were evaluated by Cell Counting Kit-8 analysis, cell nucleus morphology observation, flow cytometer, and PCR analysis. The in vivo anti-melanoma effects of HANPs were studied in the tumor model of nude mice. Results: The five HANPs had different physicochemical properties, including morphology, size, specific surface area (SSA), crystallinity, and so on. By the in vitro cell study, it was found that the material factors played important roles in the anti-melanoma effect of HANPs. Among the as-prepared five HANPs, HA-A with granular shape, smaller size, higher SSA, and lower crystallinity exhibited best effect on inhibiting the viability of A375 cells. At the concentration of 200 mu g/mL, HA-A resulted in the lowest cell viability (34.90%) at day 3. All the HANPs could induce the apoptosis of A375 cells, and the relatively higher apoptosis rates of the cells were found in HA-A (20.10%) and HA-B (19.41%) at day 3. However, all the HANPs showed no inhibitory effect on the viability of the normal human epidermal fibroblasts. The preliminary in vivo evaluation showed that both HA-A and HA-C could delay the formation and growth speed of melanoma tissue significantly. Likely, HA-A exhibited better effect on inhibiting the growth of melanoma tissue than HA-C. The inhibition rate of HA-A for tumor tissue growth reached 49.1% at day 23. Conclusion: The current study confirmed the anti-melanoma effect of HANPs and provided a new idea for the clinical treatment of melanoma.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available