脂质体纳米封闭使I型光动力转换能够用于协同性癌症光热-免疫疗法
Minglu Zhang1,2,3, Shanshan Liang2,4, Meng Wang2,4
1Qingdao Central Hospital, NHC Key Laboratory of Cardiopulmonary Rehabilitation and Functional Recovery, Industry-Academia-Research Collaborative and Innovation Center For Intelligent Rehabilitation Drug R&D of Shandong Province, Qingdao Key Laboratory of Precision Drug Research for Chronic Disease Rehabilitation, School of Health and Life Sciences, University of Health and Rehabilitation Sciences, Qingdao, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 15, 2026
概括
这项研究介绍了一种新型纳米平台,可以将II型转换为I型光动力学疗法 (PDT),用于缺氧瘤. 这种方法增强了基因的产生,改善了瘤治疗和抑制转移.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 摄影化学的使用.
背景情况:
- 缺氧瘤很难用传统疗法治疗.
- 第二种类型的光动力学治疗 (PDT) 在低氧环境中有效性有限.
- 现有的策略集中在通过分子工程阻止II型途径.
研究的目的:
- 开发一个纳米平台,将II型转换为I型PDT.
- 为了提高缺氧瘤的治疗结果.
- 调查脂质体封闭在调节PDT途径中的作用.
主要方法:
- 制造一个多功能纳米平台 (RhM-R837@Lip) 整合脂质体封闭.
- 使用具有捐赠者-π-接受者 (D-π-A) 结构的基于半氨酸的光敏感剂.
- 研究电子/转移路径和激素生成 (O2•−,•OH).
- 评估光热转换效率和免疫反应刺激.
主要成果:
- 通过抑制单片氧和促进其他基因物种,通过抑制单片氧和促进其他基因物种,实现了从II型到I型PDT的高效转换.
- 由于脂质体纳米封闭,证明了高光热转换效率 (56.1%).
- RhM-R837@Lip纳米平台有效抑制了瘤转移,并刺激了全身免疫反应.
结论:
- 脂质体纳米封闭和D-π-A结构促进了激素切换行为,有利于I型PDT.
- 开发的纳米平台提供了一种多功能策略,以克服缺氧瘤微环境.
- 这种方法改善了PDT和光催化性能,从而提高了瘤的根除.
相关概念视频
02:08Gene Conversion
10.7K
Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
10.7K
02:08Gene Conversion
3.1K
3.1K
01:27Tumor Immunotherapy
2.0K
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
2.0K
01:36Conversion of Units
37.3K
Sometimes, there is a need to convert from one unit to another one. For instance, reading a cookbook in which quantities are expressed in units of liters or ounces may require conversion of quantities to cups. Or, when looking up directions on how to get to a location, we may be interested to know how many miles we are going to walk. In this case, we would have to convert units of feet or meters to miles.
The first step in the unit conversion is to list the given units and the units required...
The first step in the unit conversion is to list the given units and the units required...
37.3K
03:23Types of Radioactivity
19.9K
The most common types of radioactivity are α decay, β decay, γ decay, neutron emission, and electron capture.
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
19.9K
02:48Conversion of Alcohols to Alkyl Halides
8.5K
This lesson delves into the conversion of alcohols to corresponding alkyl halides and the mechanism of action for different reagents. Typically, the hydroxyl group is first protonated to convert it to a stable leaving group. Consequently, based on the starting alcohol, the mechanism undergoes either of the nucleophilic substitution routes, SN1 or SN2. Tertiary alkyl halides are made using the two-step SN1 mechanism that occurs via a carbocation intermediate, which is stabilized by...
8.5K