Photothermal effects of folate-conjugated Au nanorods on HepG2 cells

Photothermal effects of folate-conjugated Au nanorods on HepG2 cells
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叶酸共轭金纳米棒对 HepG2 细胞的光热效应

DOI:
10.1007/s00253-012-3935-1
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发表时间:
2012-03
影响因子:
5
通讯作者:
Liu, Mei
Liu, Mei
中科院分区:
工程技术2区
文献类型:
--
作者:
Jin, Hua;Yang, Peihui;Cai, Jiye;Wang, Jinhui;Liu, Mei

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光热肿瘤治疗作为一种具有前瞻性的局部肿瘤治疗方法,正受到越来越多的关注。本文将金纳米棒与叶酸(folate/ aunr)偶联,利用MTT法、流式细胞术研究其对肝癌细胞系(HepG2)的光热效应,并利用原子力显微镜(AFM)在亚细胞水平上观察其对细胞形态、细胞骨架、细胞表面粘附和硬度的影响。结果表明,近红外激光诱导的叶酸/ aunr热疗可以破坏细胞膜的完整性和稳态,从而导致细胞骨架解聚和细胞内Ca2+的内流。因此,叶酸/ aunr可以作为叶酸受体肿瘤光热治疗的有效和有前途的纳米材料。
Photothermal cancer therapy, as a prospective approach for local cancer treatment, is attracting increasing interests. In this paper, gold nanorods were conjugated with folate (folate/AuNRs), and their photothermal effects on hepatocellular carcinoma cell line (HepG2) using MTT assay, flow cytometry, as well as on the cellular morphology, cytoskeleton, cell surface adhesion, and stiffness detected at subcellular level by an atomic force microscope (AFM) were investigated. The results indicated that near-infrared laser-induced hyperthermia of folate/AuNRs could break the cell membrane integrity and homeostasis and then lead to the depolymerization of cytoskeleton and influx of intracellular Ca2+. Thus, folate/AuNRs can be as effective and promising nanomaterials for photothermal therapy of folate receptor bearing tumor.
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