Synthesis of Silica Based Nanoparticles Against the Proliferation of Human Prostate Cancer

(E-pub Ahead of Print)

Author(s): Irem M. Durmus, Ilyas Deveci, Serdar Karakurt*

Journal Name: Anti-Cancer Agents in Medicinal Chemistry
(Formerly Current Medicinal Chemistry - Anti-Cancer Agents)

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Background: Prostate cancer(PCa) has the second-highest morbidity and mortality rates in men. Possessing facile surface chemistry and unique optical properties make silica nanoparticles(SiO2-NPs) promising cancer therapy materials.

Objective: This study aimed to investigate the effects of SiO2-NPs and their derivatives, including SiNP-NH2, SiNP-Cl, and SiNP-SH against PCa and clarify their molecular mechanism on cell death, gene, and protein expressions.

Methods: Following the synthesis and derivation of SiO2-NPs, their characterization was carried out using TEM, DLS, BET, and FT-IR. Cytotoxic properties of the compounds were investigated against different human cancerous cells, including HUH-7, A549, DLD-1, HeLa, NCI-H295R, and PC-3, as well as human healthy epithelium cell line PNT1A.

Results: SiNP-NH2, SiNP-Cl, and SiNP-SH dose-dependently inhibited the proliferation of PC-3 cells with an IC50 value as 55.46 µg/mL, 55.09 µg/mL and 72.89 µg/mL, respectively.SiNP-SH significantly(p<0.0001) inhibited metastasis and invasion of PC-3 cells(20.4% and 46.7%, respectively), and significantly(p<0.0001) increased early apoptosis(32.3%) when compared with non-treated cells. Protein and mRNA expressions of BcL-2, Bax, caspase-3, caspase-9, caspase-12, p53, Smad-4, Kras, and Nf-ĸB were also altered following the treatment of SiO2-NPs and its derivatives.

Conclusion: Our results demonstrated that –SH functioned SiO2-NPs can prevent the proliferation of human PCa by increasing apoptosis by upregulating gene and protein expression of p53(TP53) as well as caspase-3, caspase-9, and caspase-12 in the apoptotic pathway. Besides, the increased level of Smad-4 has also implicated the decreased cell proliferation. Hence, low sized SiNP-SH nanoparticles might be a suitable candidate for the treatment of human PCa.

Keywords: Silica nanoparticles, cytotoxicity, prostate cancer, metastasis, apoptosis, gene/protein expression.

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Article Details

Published on: 07 February, 2021
(E-pub Ahead of Print)
DOI: 10.2174/1871520621666210208105521
Price: $95

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