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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Antimicrobial Activity and Cytotoxicity to Tumor Cells of Nitric Oxide Donor and Silver Nanoparticles Containing PVA/PEG Films for Topical Applications

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Rolim, Wallace R. [1, 2] ; Pieretti, Joana C. [1, 2] ; Reno, Debora L. S. [1] ; Lima, Bruna A. [3] ; Nascimento, Monica H. M. [1, 2] ; Ambrosio, Felipe N. [4] ; Lombello, Christiane B. [2, 4] ; Brocchi, Marcelo [3] ; de Souza, Ana Carolina S. [1] ; Seabra, Amedea B. [1, 2]
Total Authors: 10
[1] Fed Univ ABC UFABC, Ctr Nat & Human Sci CCNH, BR-09210580 Santo Andre, SP - Brazil
[2] Fed Univ ABC UFABC, Nanomed Res Unit NANOMED, BR-09210580 Santo Andre, SP - Brazil
[3] Univ Estadual Campinas, Inst Biol, Dept Genet Evolut Microbiol & Immunol, UNICAMP, Trop Dis Lab, BR-13083862 Campinas, SP - Brazil
[4] Fed Univ ABC UFABC, Ctr Engn Modeling & Appl Social Sci, BR-09210580 Santo Andre, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: ACS APPLIED MATERIALS & INTERFACES; v. 11, n. 6, p. 6589-6604, FEB 13 2019.
Web of Science Citations: 5

Because of their antibacterial activity, silver nanoparticles (AgNPs) have been explored in biomedical applications. Similarly, nitric oxide (NO) is an important endogenous free radical with an antimicrobial effect and toxicity toward cancer cells that plays pivotal roles in several processes. In this work, biogenic AgNPs were prepared using green tea extract and the principles of green chemistry, and the NO donor S-nitrosoglutathione (GSNO) was prepared by the nitrosation of glutathione. To enhance the potentialities of GSNO and AgNPs in biomedical applications, the NO donor and metallic nanoparticles were individually or simultaneously incorporated into polymeric solid films of poly(vinyl alcohol) (PVA) and poly(ethylene glycol) (PEG). The resulting solid nanocomposites were characterized by several techniques, and the diffusion profiles of GSNO and AgNPs were investigated. The results demonstrated the formation of homogeneous PVA/PEG solid films containing GSNO and nanoscale AgNPs that are distributed in the polymeric matrix. PVA/PEG films containing AgNPs demonstrated a potent antibacterial effect against Gram-positive and Gram-negative bacterial strains. GSNO-containing PVA/PEG films demonstrated toxicity toward human cervical carcinoma and human prostate cancer cell lines. Interestingly, the incorporation of AgNPs in PVA/PEG/GSNO films had a superior effect on the decrease of cell viability of both cancer cell lines, compared with cells treated with films containing GSNO or AgNPs individually. To our best knowledge, this is the first report to describe the preparation of PVA/PEG solid films containing GSNO and/or biogenically synthesized AgNPs. These polymeric films might find important biomedical applications as a solid material with antimicrobial and antitumorigenic properties. (AU)

FAPESP's process: 18/02832-7 - Hybrid magnetic and antibacterial nanoparticles: synthesis, characterization and applications
Grantee:Joana Claudio Pieretti
Support type: Scholarships in Brazil - Master
FAPESP's process: 16/10347-6 - S-nitrosothiol containing nanoparticles: Synthesis, characterization, cytotoxicity and applications
Grantee:Amedea Barozzi Seabra
Support type: Regular Research Grants