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Chitosan-PEI passivated carbon dots for plasmid DNA and miRNA-153 delivery in cancer cells. | LitMetric

AI Article Synopsis

  • The study focuses on the development and potential use of carbon dots made from biopolymers like chitosan and PEI for biomedical applications, specifically for gene delivery in cancer therapy.
  • These carbon dots demonstrated effective transfection of plasmid DNA and miRNA in cancer cell lines A549 and MDA-MB-231, indicating their ability to facilitate gene transfer while minimizing cytotoxicity.
  • The results suggest that a specific combination of carbon dots, particularly CP25-CDs, may serve as a promising new tool for delivering nucleic acids in cancer treatment.

Article Abstract

These days carbon dots have been developed for multiple biomedical applications. In the current study, the transfection potential of synthesized carbon dots from single biopolymers such as chitosan, PEI-2kDa, and PEI-25kDa (S-CDs, PEI2-CDs, and PEI25-CDs) and by combining two biopolymers (CP2-CDs and CP25-CDs) through a bottom-up approach have been investigated. The characterization studies revealed successful synthesis of fluorescent, positively charged carbon dots <20 nm in size. Synthesized carbon dots formed a stable complex with plasmid DNA (EGFP-N1) and miRNA-153 that protected DNA/miRNA from serum-induced degradation. cytotoxicity analysis revealed minimal cytotoxicity in cancer cell lines (A549 and MDA-MB-231). transfection of EGFP-N1 plasmid DNA with PEI2-CDs, PEI25-CDs and CP25-CDs demonstrated that these CDs could strongly transfect A549 and MDA-MB-231 cells. The highest EGFP-N1 plasmid transfection efficiency was observed with PEI2-CDs at a weight ratio of 32:1. PEI25-CDs polyplex showed maximum transfection at a weight ratio of 8:1 in A549 at a weight ratio of 16:1 in MDA-MB-231 cells. CP25-CDs exhibited the highest transfection at a weight ratio of 16:1 in both cell lines. The transfection of target miRNA, i.e., miR-153 in A549 and MDA-MB-231 cells with PEI2-CDs, PEI25-CDs, and CP25-CDs suggested successful transfer of miR-153 into cells which induced significant cell death in both cell lines. Importantly, S-CDs and CP2-CDs could be tolerated by cells up to 200 μg/mL concentration, while PEI2-CDs, PEI25-CDs, and CP25-CDs showed non-cytotoxic behavior at low concentrations (25 μg/mL). Together, these results suggest that a combination of carbon dots synthesized from chitosan and PEI (CP25-CDs) could be a novel vector for transfection nucleic acids that can be utilized in cancer therapy.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10682126PMC
http://dx.doi.org/10.1016/j.heliyon.2023.e21824DOI Listing

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