Melanin-intercalated layered double hydroxide LDH/MNP as a stable photothermal agent

IF 4.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY BMC Chemistry Pub Date : 2024-10-12 DOI:10.1186/s13065-024-01312-1
Xue Li, Yixuan Wang, Xinkai Geng, Jinghua Sun, Yulong Liu, Anjie Dong, Ruiping Zhang
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Abstract

Melanin nanoparticles (MNPs) are a type of electronegative compound that can be used as photothermal agent for cancer treatment. Nevertheless, the agglomeration of MNP, which is one of the limitations in practice, contributes to the instability of MNP. Pristine layered double hydroxide (LDH), as a kind of positive inorganic material when there exist no other cargo between its layers, can accommodate electronegative molecules between its layers to endow them with stable properties. Hence, in this study, electronegative MNP was intercalated into LDH lamellas via ion-exchange method to obtain the stable original photothermal agent LDH/MNP, solving the tough problem of MNP’s agglomeration. The surface morphology, X-ray diffraction and fourier transform infrared spectra affirmed the successful intercalation of MNP between LDH lamellas. The Z-average particle sizes of LDH/MNP on day 0, 7 and 14 were measured as 221.8 nm, 227.6 nm and 230.5 nm without obvious fluctuation, while the particle sizes of MNP went through dramatic enlargement from 105.8 nm (day 0) to 856.1 nm (day 7), indicating the better stability of LDH/MNP than MNP. The typical polymer dispersity index (PDI) values on day 0, 7 and 14 verified the better stability of LDH/MNP, too. Photothermal properties of LDH/MNP were assessed and the results ensured the representative photothermal properties of LDH/MNP. The fine cytocompatibility of LDH/MNP was verified via cytotoxicity test. Results confirmed that the agglomeration of MNP disappeared after its intercalation into LDH and LDH/MNP possessed fine stability as well as typical photothermal property. The intercalation of MNP into LDH gave the photothermal agent MNP a promising way for its better stability and long-term availability in photothermal treatment.

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作为稳定光热剂的黑色素夹层双氢氧化物 LDH/MNP
黑色素纳米粒子(MNPs)是一种电负性化合物,可用作治疗癌症的光热剂。然而,在实际应用中,MNP 的团聚是其局限性之一,它导致了 MNP 的不稳定性。原始的层状双氢氧化物(LDH)作为一种正性无机材料,当其层与层之间不存在其他物质时,可以在层与层之间容纳电负性分子,使其具有稳定的特性。因此,本研究通过离子交换法将电负性的 MNP 插层到 LDH 薄膜中,得到了稳定的光热原剂 LDH/MNP,解决了 MNP 团聚的难题。表面形貌、X 射线衍射和傅立叶变换红外光谱证实了 MNP 在 LDH 片层间的成功插层。第 0 天、第 7 天和第 14 天,LDH/MNP 的 Z 平均粒径分别为 221.8 nm、227.6 nm 和 230.5 nm,无明显波动,而 MNP 的粒径则从 105.8 nm(第 0 天)急剧扩大到 856.1 nm(第 7 天),表明 LDH/MNP 比 MNP 具有更好的稳定性。第 0 天、第 7 天和第 14 天的典型聚合物分散指数(PDI)值也验证了 LDH/MNP 更好的稳定性。对 LDH/MNP 的光热特性进行了评估,结果确保了 LDH/MNP 具有代表性的光热特性。通过细胞毒性测试验证了 LDH/MNP 的良好细胞相容性。结果证实,MNP插层到 LDH 中后,团聚现象消失,LDH/MNP 具有良好的稳定性和典型的光热特性。将 MNP 插层到 LDH 中使光热剂 MNP 在光热治疗中具有更好的稳定性和长期可用性。
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来源期刊
BMC Chemistry
BMC Chemistry Chemistry-General Chemistry
CiteScore
5.30
自引率
2.20%
发文量
92
审稿时长
27 weeks
期刊介绍: BMC Chemistry, formerly known as Chemistry Central Journal, is now part of the BMC series journals family. Chemistry Central Journal has served the chemistry community as a trusted open access resource for more than 10 years – and we are delighted to announce the next step on its journey. In January 2019 the journal has been renamed BMC Chemistry and now strengthens the BMC series footprint in the physical sciences by publishing quality articles and by pushing the boundaries of open chemistry.
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