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001     294828
005     20241206182834.0
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100 1 _ |a Rashidipour, Marzieh
|b 0
245 _ _ |a Antimicrobial activity and cytotoxic and epigenetic effects of tannic acid-loaded chitosan nanoparticles.
260 _ _ |a [London]
|c 2024
|b Macmillan Publishers Limited, part of Springer Nature
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520 _ _ |a Tannic acid (TA) is a potent antitumor agent, but its low bioavailability and absorption limit its use. In this study, it was loaded into chitosan-based nanoparticles (Chi-NPs) to overcome these limitations and to improve its antimicrobial and anticancer activities. TA-loaded Chi-NPs (Chi-TA-NPs) were synthesized using the ionic gelation method and physicochemically characterized by FE-SEM, FTIR, XRD, PDI, DLS, and zeta potential analysis. Additionally, the antimicrobial activity of Chi-TA-NPs against two G+ bacterial strains, two G- bacterial strains, and a fungal strain (Candida albicans) was investigated using the microbroth dilution method. MTT assay was used to examine the cytotoxic effects of Chi-TA-NPs on HepG2 cells. The expression of DNA methyltransferase 1 (DNMT1), DNMT3A, and DNMT3B was examined in HepG2 cells using RT-qPCR. The amount of 5-methylcytosine in the HepG2 cell-derived genomic DNA was measured using ELISA. FE-SEM micrographs showed the loading of TA into the chitosan-based formulation. The peaks detected in the XRD and FTIR analyses confirmed the formation of the Chi-TA-NPs. The PDI value (0.247 ± 0.03), size (567.0 ± 25.84 nm), and zeta potential (17.0 ± 5.86 mV) confirmed the relative stability of Chi-TA-NPs. A constant release profile in line with the Korsmeyer-Peppas model was detected for Chi-TA-NPs, such that approximately 44% of TA was released after 300 min. In addition, Chi-TA-NPs exhibited effective antimicrobial activity against the studied microbial strains, as manifested by MIC values ranging from 250 to 1000 µg/mL. Chi-TA-NPs induced cytotoxicity in liver tumor cell line, with an IC50 value of 500 µg/mL. Furthermore, Chi-TA-NPs considerably decreased the expression of DNMT1 (2.52-fold; p = 0.01), DNMT3A (2.96-fold; p = 0.004), and DNMT3B (2.94-fold; p < 0.0001). However, 5-methylcytosine levels in HepG2 cells were unaffected by Chi-TA-NPs treatment (p = 0.62). Finally, the antimicrobial, cytotoxic, and epigenetic effects of Chi-TA-NPs were more pronounced than those of free TA and the unloaded Chi-NPs. In conclusion, Chi-TA-NPs exhibit promising potential for reducing microbial growth and promoting cytotoxicity in liver cancer cells.
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650 _ 7 |a Antimicrobial effects
|2 Other
650 _ 7 |a Chitosan nanoparticles
|2 Other
650 _ 7 |a Cytotoxicity
|2 Other
650 _ 7 |a DNA methylation
|2 Other
650 _ 7 |a Tannic acid
|2 Other
650 _ 7 |a Chitosan
|0 9012-76-4
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650 _ 7 |a Tannins
|2 NLM Chemicals
650 _ 7 |a Anti-Infective Agents
|2 NLM Chemicals
650 _ 7 |a Antineoplastic Agents
|2 NLM Chemicals
650 _ 7 |a tannic acid
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650 _ 7 |a Polyphenols
|2 NLM Chemicals
650 _ 2 |a Chitosan: chemistry
|2 MeSH
650 _ 2 |a Chitosan: pharmacology
|2 MeSH
650 _ 2 |a Humans
|2 MeSH
650 _ 2 |a Tannins: chemistry
|2 MeSH
650 _ 2 |a Tannins: pharmacology
|2 MeSH
650 _ 2 |a Nanoparticles: chemistry
|2 MeSH
650 _ 2 |a Hep G2 Cells
|2 MeSH
650 _ 2 |a Anti-Infective Agents: pharmacology
|2 MeSH
650 _ 2 |a Anti-Infective Agents: chemistry
|2 MeSH
650 _ 2 |a Epigenesis, Genetic: drug effects
|2 MeSH
650 _ 2 |a Candida albicans: drug effects
|2 MeSH
650 _ 2 |a Microbial Sensitivity Tests
|2 MeSH
650 _ 2 |a Antineoplastic Agents: pharmacology
|2 MeSH
650 _ 2 |a Antineoplastic Agents: chemistry
|2 MeSH
650 _ 2 |a Polyphenols
|2 MeSH
700 1 _ |a Abbaszadeh, Saber
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700 1 _ |a Birjandi, Mehdi
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700 1 _ |a Pajouhi, Naser
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700 1 _ |a Ahmadi Somaghian, Shahram
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700 1 _ |a Moradi Sarabi, Mostafa
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700 1 _ |a Babaeenezhad, Esmaeel
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