Mn 2+ -负电荷聚乙二醇树突状分子g2 -色氨酸:新型纳米磁共振显像剂

A. Keshavarz, Soodeh Hajbabaei, Jafar Sojoodi, Mostafa Saffari, M. Afshar, Fatemeh Monnavari, Esmaeil Mohammadi Pargoo, R. Rasouli, Hadi Hejazinia, A. Assadi, Leila Badrzadeh, S. Abbasnezhad, S. S. Shandiz, M. Saffari, Masood Bamedi, M. Ardestani
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引用次数: 3

摘要

由于基于Gd (III)的MRI区分操作员在肾功能受损患者中的有害症状的新宣言,有一个可靠的考虑新兴的替代区分专家MRI。一种以聚乙二醇和柑橘提取物为核心的聚合物作为外壳,用于双模块成像。聚合物融合后,ALGD-Trp C偶联,Mn2+在树状聚合物上堆积。采用原子力显微镜(AFM)放大镜对聚焦双成像操作者的差异化升级MRI进行评价。在世界各地,增长是导致死亡的原因之一。早期确定肿瘤是一种体面的解决方案。获得一种具有高特异性、敏感性和靶向癌细胞能力的高效、非突发性造影剂是至关重要的。在不同的恶性肿瘤鉴别策略中,磁共振成像是一个重要的技术,但其缺点是分辨率低。在本研究中,色氨酸被附加在阴离子直接球形树突状物上,其中心是聚乙二醇,周围是柑橘提取物束。利用色氨酸增强人乳腺恶性肿瘤细胞的细胞内摄取和聚集,最终分化成排列整齐的树突状分子中的操作符(Mn2+)。用FT-IR、FTIR、Zeta浆料、uv光谱等技术对造影剂进行了表征。ICP-AES测定细胞内Mn2+离子的摄取情况。对乳腺肿瘤MCF-7细胞株进行了细胞毒性研究和细胞传递机制评价。然后,利用MR成像体外评估不同分组新差异专科对T1和T2的影响。结果显示,Mn2+ -阴离子直球状树突状分子g2 -色氨酸对比剂没有表现出任何显著的毒性(癌症和普通细胞),结果表明,与Magnevist作为标准CA相比,新的专注于纳米分化专家适合肿瘤细胞中的积累和固体t1强标记。这种新型复杂性专家可以作为早期识别肿瘤的良好CA申请人。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mn 2+ - Negatively Charged Pegylated Dendrimer G2-Tryptophan: Novel Nano Magnetic Resonance Imaging Agent
Due to the new proclamation of the harmful symptoms of Gd (III) based MRI differentiate operators in the patients with harmed renal capacities, there is a solid consideration on emerging substitute differentiate specialists for MRI. A polymer with core of PEG and citrus extract as a shell was created for double modular imaging. After amalgamation of the polymer, ALGD-Trp C onjugate and after that Mn2+ stacked on the dendrimer. Differentiate upgraded MRI of the focused on double imaging operator was assessed by AFM magnifying lens. Growth is one of driving reason for death in everywhere throughout the world. Early determination of tumor known as a decent solution. Achieving a capable and non-obtrusive contrast agent with high specificity, sensitivity and capacity to target cancer cells are essential. Among of different malignancies distinguishing strategies, Magnetic Resonance Imaging is an important technique, however its burdens including low resolution, In this study, Tryptophan was appended on the Anionic direct globular dendrimer with polyethylene glycol center and citrus extract bunches around it. Tryptophan was utilized to enhance intra-cell take-up and gathering in human bosom malignancy cells lastly differentiate operator (Mn2+) stacked in orchestrated dendrimers. The contrast agent was characterized with different techniques such as FT-IR, FTIR, Zeta sizer, UV-spectroscopy. ICP-AES was used to assess the intra-cell take-up of Mn2+ iones. Cytotoxicity studies and evaluation of cell passing mechanism were performed in bosom tumor MCF-7 cell line. Then, impact of various grouping of new difference specialist on T1 and T2 assessed in-vitro utilizing MR imaging. In light of the outcomes exhibited that Mn2+ - Anionic straight globular dendrimer G2-Tryptophancontrastagentdid not demonstrate any significant toxicity (cancer and ordinary cells), The outcomes demonstrated the new focused on nano differentiate specialist fitting accumulation in the tumor cells and solid T1intense flag on compared to Magnevist as a standard CA. This novel complexity specialist can be presented as a decent CA applicant in early identification of tumor.
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