可见光增强了黄素在体外快速破坏和细胞死亡的作用
1Morphogenyx Inc, PO Box 717, East Northport, NY, 11731, USA. jadepasquale@morphogenyx.com.
概括
黄素与可见光相结合,通过破坏细胞骨,细胞核和线粒体,迅速破坏细胞. 这种实时观察到的光激活细胞死亡,为新的光动力学疗法提供了潜力.
科学领域:
- 细胞生物学 细胞生物学
- 摄影化学的使用.
- 药理学 药理学是指药理学的学科.
背景情况:
- 黄素是从长黄 (Curcuma longa) 衍生出来的,它表现出多种不同的药理活性.
- 已知黄素在光激活后具有细胞毒性.
研究的目的:
- 为了评估黄素与可见光相结合对细胞组件的影响.
- 为了评估黄素诱导的细胞破坏的实时进展.
主要方法:
- 时间间隔差异干扰对比 (DIC) 显微镜.
- 相对光显微镜. 相对光显微镜.
- 使用RTG-2细胞和黄素,持续暴露于可见光.
主要成果:
- 观察到快速而剧烈的细胞破坏.
- 显著改变F-actin和微管细胞骨架,包括碎片化和损失.
- 原子核显示有颗粒状核质,凝聚的DNA和收缩.
- 线粒体碎片化并消失;血膜的完整性受到损害.
- 效果依赖于光线,未照明的区域不受影响.
结论:
- 黄素和可见光诱导快速,不可逆转的细胞破坏.
- 可以实时监控结构性解体.
- 建议在光动力学治疗中使用黄素的新方法,同时进行光学评估.
相关概念视频
Necrosis
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
Mutations
Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Energy Transfer in Chemical Reactions
Chemical reactions require sufficient energy to cause the matter to collide with enough precision and force that old chemical bonds can be broken and new ones formed. In general, kinetic energy is the form of energy powering any type of matter in motion. Imagine a person building a brick wall. The energy it takes to lift and place one brick on top of another is the kinetic energy—the energy matter possesses because of its motion. Once the wall is in place, it stores potential energy. Potential...
Variables Affecting Phosphorescence and Fluorescence
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...


