Gao B, Feng Y, Chen X, Zhang J. A new PLA-Tween composited drug-carrying C60-Fe
3O
4 multifunctional ultrasound contrast agent based on three kinds of lesions.
RSC Adv 2021;
11:31015-31029. [PMID:
35498950 PMCID:
PMC9041307 DOI:
10.1039/d1ra04936d]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 08/29/2021] [Indexed: 11/21/2022] Open
Abstract
A PLA-Tween composited drug-carrying C60-Fe3O4 microbubble was designed and prepared. Using Fe3O4 as a targeting factor and C60 as a drug carrier, warfarin (WF), netimixin (NET) and doxorubicin (DOX) respectively were loaded on a C60-Fe3O4 complex through π-π conjugate effect, and C60-Fe3O4-WF, C60-Fe3O4-NET and C60-Fe3O4-DOX targeted drug-loading complexes were obtained. The three drug-loading complexes were respectively combined into PLA and Tween membrane material, PLA-Tween composited C60-Fe3O4-DOX microbubbles, PLA-Tween composited C60-Fe3O4-NET microbubbles and PLA-Tween composited C60-Fe3O4-WF microbubbles were obtained, respectively. The average particle size of PLA-Tween composited drug-carrying C60-Fe3O4 microbubbles was 446.4 nm, the microbubble size was uniform, and the Zeta potential was -40.5 mV which showed a good stability. The loading rates of DOX, NET and WF in PLA-Tween composited drug-carrying C60-Fe3O4 microbubbles were 5.58%, 8.15% and 3.37%, respectively. PLA-Tween composited C60-Fe3O4-DOX microbubbles could inhibit the breast cancer MDA-MB-231 cells and normal mouse fibroblast 3T3 cells, the inhibition rates were respectively 53.4% and 18.6%, which significantly reduced the toxicity of free DOX drug on the normal cells (62.2%). PLA-Tween composited C60-Fe3O4-NET microbubbles had a inhibitory effect on the growth of Staphylococcus aureus and Escherichia coli, and the inhibitory effect on Escherichia coli was better. PLA-Tween composited C60-Fe3O4-WF microbubbles could inhibit the formation of thrombus, and PT, TT and APTT were significantly prolonged. PLA-Tween composited C60-Fe3O4 microbubbles had a developing effect on the kidney, bladder and abdominal aorta of rabbit. Under the action of external magnetic field, the ultrasonic imaging effect of composite microbubbles was significantly enhanced.
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