相关实验视频

Updated: Sep 10, 2025

Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model

Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model

Published on: September 7, 2013

增强生物光保护的黑色素分子工程

Ruotong Deng¹, Wei Chen², Hanjie Zhu³

¹Key Laboratory of Radiopharmaceuticals of the Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China.

Nature communications

|August 23, 2025

概括

这项研究将黑色素设计为轻量级,生物相容的辐射保护材料. 新型无金属黑色素显著增强了辐射保护,改善了小鼠的生存率.

科学领域:

材料科学
生物医学工程
辐射物理

背景情况:

电离辐射的使用越来越多, 需要先进的辐射保护材料.
像和混凝土这样的传统材料有限制 (毒性,重量).
现有的无替代品 (含金属的纳米材料,聚合物) 在实现轻量化和生物相容性方面仍然面临挑战.

研究的目的:

使用黑色素的分子工程开发新的无金属辐射保护材料.
创建基于黑色素的材料, 增强结合, 物理屏蔽,
评估工程黑色素对辐射保护的体内功效.

主要方法:

通过分子工程提高黑色素的特性.
制造没有金属的黑色素材料.
对物理屏蔽和抗氧化特性进行评估.
在小鼠体内测试使用玛射线辐射的辐射保护效果.

主要成果:

开发出无金属的黑色素材料,并改进了对接和物理屏蔽.
机械制造的黑色素表现出有效的抗氧化特性.
在体内研究显示,在6GY全身照射后,小鼠的生存率从大约12%增加到100%.

结论:

没有金属的工程黑色素代表了一种有希望的轻量级和生物相容的辐射保护替代品.
这种方法为当前辐射保护材料的局限性提供了可行的解决方案.
进一步的开发可能会在医学和工业领域带来先进的应用.

更多相关视频

Methods to Inhibit Bacterial Pyomelanin Production and Determine the Corresponding Increase in Sensitivity to Oxidative Stress

Methods to Inhibit Bacterial Pyomelanin Production and Determine the Corresponding Increase in Sensitivity to Oxidative Stress

Published on: August 31, 2015

Quantification of Hypopigmentation Activity In Vitro

Quantification of Hypopigmentation Activity In Vitro

Published on: March 6, 2019

相关概念视频

Pigmentation

Pigmentation

The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...