2D Perovskite纳米片癌症治疗的药物递送平台

最新研究化学工程杂志重点是基于Pegypated WO2.9纳米片(WO3的替代版本)(NSS)(NSS)的复杂的二维(2D)光子药物传递技术。

学习:缺氧的氧化二氧化碳钙钛矿纳米片基于癌症疗法的光子纳米医学。Image Credit: Love Employee/Shutterstock.com

Photothermal Therapy and 2D Nanomaterials Perovskite

光热疗法(PTT)是一种非侵入性肿瘤治疗技术,该技术采用光热剂(PTA)(PTA)使用近红外(NIR)激光来创建局部热点,并已进行了广泛的研究,并已获得了相当大的焦点。

钙钛矿纳米片提供了几种吸引人的特征,包括2D纳米材料,包括表面积特征,机械柔韧性,强烈的轻度相互作用,最小的陷阱状态密度和更高欧洲杯足球竞彩的吸附功效。一些钙钛矿纳米片表现出高光致发光。

限制

但是,由于典型的NIR-I生物窗口(650–950 nm)的渗透组织深度受限,因此大多数由NIR-I介导的PTT仍然不足以有效治疗大或重度肿瘤,这导致了升高残余和复发率。

In comparison, the NIR-II (1000–1700 nm) bio-window had a higher maximum permitted exposure (MPR), decreased photon scattering, increased penetration depth, and reduced tissue background, allowing NIR-II PTT to significantly enhance tumor treatment efficiency. Unfortunately, in comparison to the PTA active in the NIR-I region, the advancement of NIR-II materials is still behind.

Materials Incorporated

The 欧洲杯足球竞彩materials used by the researchers for the experiment included Sodium tungstate monohydrate (Na2WO4⋅H2O), nitric acid (HNO3), chloroform (CHCl3) sodium borohydride (NaHB4), doxorubicin hydrochloride (DOX), calcein-AM, Propidium Iodide (PI),4',6-Diamidino-2-苯基(DAPI)和CCK-8。

在研究期间,还使用了磷酸盐缓冲盐水(PBS)(PH 7.4),细胞培养基,胎牛血清(FBS),青霉素 - 链霉菌素和胰蛋白酶-EDTA。

研究方法

透射电子显微镜,扫描电子显微镜和原子力显微镜用于研究。

首先,将200 mg的Na2WO4H2O散布在300 mL HNO3溶液中(5 m)。然后将组合混合物在室温(RT)下旋转三天以进行大量生产。3⋅H2O. Two rectangle porcelain crucibles with a volume of 5.0 cm × 2.0 cm × 1.5 cm were used. Firstly, 10 mg of WO3⋅H2o nss被放在其中一个,nabh4(5 mg) was placed in the other one. Two porcelain crucibles were then placed in a tubular furnace, and the porcelain crucibles containing WO3⋅H2O NSs were held on top of the other with a rotation angle of 20°.

为了使PEG涂层WO2.9 NSS,将WO2.9 NSS(10 mg)与25 mg DSPE-PEG溶解在30 mL CHCL3溶液中的CHCL3溶液中。超声处理30分钟后,使用真空旋转蒸发去除去CHCL3溶液。

将不同浓度的DOX溶于PBS溶液(pH 7.4,10 mm),并与[电子邮件保护]2.9NSS。DOX的最终浓度分别为0.2、0.4、0.6、0.8和1 mg ml -1。

在DMEM培养基中,将4个T1细胞,HUVEC细胞,NCM-460细胞和HeLa细胞孵育。将FBS(10%)和链霉素/青霉素(1%)补充剂施用给所有DMEM培养基,以生成细胞培养物。

结果和讨论

最新研究表明,WO3·H2O NS在120、267、326、684、810和960 cm处表现出典型的拉曼活性峰- 1。pegyated wo2.9NS([电子邮件保护]2.9NS) still retained good dispersity and stability in the PBS and medium even after 24 h incubation, indicating that the dispersity and stability are significantly bet.

当数量[电子邮件保护]2.9NSS为200 mg mL 1,是2.0 wcm产生的最大温度2NIR-I辐照仅为32.2°C。在808 nm和1064 nm辐照下,光热转化效率[电子邮件保护]2.9NSs is determined to be 18.7 percent and 36.2 percent, respectively. These findings imply[电子邮件保护]NSS具有很高的潜力,可以用作NIR-II窗口中肿瘤的PTT光热剂。

药物负载能力[电子邮件保护]然后使用UV -VIS吸收光谱检查NSS。dox的浓度加载到[电子邮件保护]在我们研究的参数中,DOX的浓度增加,最大药物负荷效率约为102%,这显着高于大多数基于纳米颗粒的输送平台,药物负载能力为10%–30%。

在所有情况下,将四个T1细胞共培养。这些小组中没有明显的细胞毒性,只是接受了NIR-II或[电子邮件保护]2.9治疗。因此,确认了无毒和生物相容性。

未来的趋势

Keeping in view the incredible findings, the WO2.9-based nanoplatform may open the way for a novel method to use more effective perovskite theragnostic nanomedicines for the cure of diverse solid cancers.

简而言之,事实证明,2D钙钛矿纳米片药物不仅具有生物相容性,而且对癌症治疗也非常有效,革新了此类材料的生物医学应用,并改善了人们的医疗保健治疗质量。欧洲杯足球竞彩

参考

Zhang,L.,Zhao,S.,Ouyang,J.,Deng,L。,&Liu,Y。N.(2021)。缺氧的氧化二氧化碳钙钛矿纳米片基于癌症疗法的光子纳米医学。化学工程杂志https://www.sciencedirect.com/science/article/pii/S1385894721048488

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Ibtisam Abbasi

写的

Ibtisam Abbasi

Ibtisam graduated from the Institute of Space Technology, Islamabad with a B.S. in Aerospace Engineering. During his academic career, he has worked on several research projects and has successfully managed several co-curricular events such as the International World Space Week and the International Conference on Aerospace Engineering. Having won an English prose competition during his undergraduate degree, Ibtisam has always been keenly interested in research, writing, and editing. Soon after his graduation, he joined AzoNetwork as a freelancer to sharpen his skills. Ibtisam loves to travel, especially visiting the countryside. He has always been a sports fan and loves to watch tennis, soccer, and cricket. Born in Pakistan, Ibtisam one day hopes to travel all over the world.

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