相关实验视频

Updated: Jun 5, 2025

Manganese Oxide Nanoparticle Synthesis by Thermal Decomposition of ManganeseII Acetylacetonate

Manganese Oxide Nanoparticle Synthesis by Thermal Decomposition of ManganeseII Acetylacetonate

Published on: June 18, 2020

定制尺寸的硫化纳米球作为高效的T1MRI对比剂,用于增强瘤治疗学

Yufang Gong¹, Kai Guo², Siyu Cai²

¹Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150081, Heilongjiang, China.

Biomaterials research

|December 12, 2024

概括

较小的硫化纳米粒子 (MnS@PAA) 显示增强的MRI对比度和瘤吸收用于癌症治疗. 它们的尺寸影响MRI有效性和治疗协同作用,100纳米颗粒显示出最佳性能.

科学领域:

纳米技术纳米技术
材料科学材料科学材料科学
生物医学工程生物医学工程

背景情况:

磁共振成像 (MRI) 对比剂对于瘤检测至关重要.
开发有效和向的癌症治疗方法仍然是一个重大挑战.
硫化纳米颗粒 (MnS@PAA) 提供了作为催眠剂的潜力.

研究的目的:

为了研究纳米粒子大小对MRI有效性的影响.
为了评估MnS@PAA纳米颗粒的大小依赖的瘤吸收和治疗疗效.
探索化学动力学和气体疗法的协同效应,通过 MnS@PAA.

主要方法:

通过调整乙烯基醇 (EG) 与二乙烯基醇 (DEG) 的比率来合成不同尺寸的MnS@PAA纳米粒子.
纳米粒子尺寸分布的表征,T1放松率和pH响应行为的表征.
在体外和体内评估瘤积累,MRI对比度增强和治疗效果.

主要成果:

纳米粒子尺寸显著影响T1放松率和MRI性能;较大的尺寸导致T1率下降.
瘤吸收效率取决于大小,100 nm MnS@PAA (MS100) 显示出优越的积累.
MS100在酸性瘤环境中通过Mn2+和H2S释放显示了增强的MRI对比度和诱导的协同性铁和H2O2升高.

结论:

纳米粒子大小是优化MRI对比度和瘤向的关键因素.
MnS@PAA纳米颗粒,特别是MS100,显示出作为癌症治疗的双重作用治疗剂的希望.
尺寸调节的Mn2+和H2S的释放使强大的协同化学动力学和气体治疗成为可能.

更多相关视频

Synthesis of 68Ga Core-doped Iron Oxide Nanoparticles for Dual Positron Emission Tomography /T1Magnetic Resonance Imaging

Synthesis of 68Ga Core-doped Iron Oxide Nanoparticles for Dual Positron Emission Tomography /T1Magnetic Resonance Imaging

Published on: November 20, 2018

MR Molecular Imaging of Prostate Cancer with a Small Molecular CLT1 Peptide Targeted Contrast Agent

MR Molecular Imaging of Prostate Cancer with a Small Molecular CLT1 Peptide Targeted Contrast Agent

Published on: September 3, 2013

相关概念视频

Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...