通过胆固醇耗尽来软化瘤基质,打破了增强抗瘤治疗的物理障碍
Zhangwen Peng1, Yunfei Yi1, Yichu Nie2
1School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, China.
概括
胆固醇耗尽通过破坏机械信号来软化瘤,改善纳米粒子药物输送和增强癌症治疗. 这种方法还抑制了瘤的进展,并重新极化了巨细胞.
科学领域:
- 在瘤学瘤学.
- 生物医学工程 生物医学工程
- 癌症生物学 癌症生物学
背景情况:
- 瘤细胞及其微环境表现出有助于癌症进展和治疗耐药性的机械性质.
- 已经证明,胆固醇消耗会使瘤细胞变硬,这可能会影响T细胞免疫疗法.
- 瘤细胞胆固醇在调节细胞外矩阵硬性和药物透中的作用仍然在很大程度上未被探索.
研究的目的:
- 研究是否从瘤细胞中消耗胆固醇可以重新教育硬瘤基质,从而克服药物透的物理障碍.
- 探索胆固醇耗尽对瘤细胞和细胞外基质之间的机械信号传递的影响.
- 评估胆固醇消耗在增强纳米粒子药物输送和光动力学疗法的有效性.
主要方法:
- 从瘤细胞中减少胆固醇.
- 评估瘤细胞和细胞外矩阵的机械性质.
- 脂质完整性和机械信号传导的分析.
- 对纳米粒子 (H/S@hNP) 透到瘤中的评估.
- 监测表皮细胞-介质细胞过渡和巨细胞两极分化 (M2到M1).
- 评估光动力学疗法的疗效.
主要成果:
- 胆固醇耗尽会破坏瘤细胞和细胞外基因之间的机械信号传递,通过破坏脂质.
- 这种干扰破坏了内物理屏障,允许纳米粒子 (H/S@hNP) 深入透.
- 胆固醇消耗抑制了表皮细胞-介质细胞过渡,并将与瘤相关的巨细胞从M2重聚到M1.
- 由于胆固醇耗尽而导致的软化瘤基质可以提高光动力学治疗的结果.
结论:
- 从瘤细胞中削减胆固醇使瘤基质变软,减少药物透的物理障碍.
- 这一策略显著提高了基于纳米粒子的药物输送和光动力学疗法的有效性.
- 胆固醇在维持瘤机械性质和进展方面发挥着关键作用,提供了一个新的治疗点.
更多相关视频
09:42Assessing Tumor Microenvironment of Metastasis Doorway-Mediated Vascular Permeability Associated with Cancer Cell Dissemination using Intravital Imaging and Fixed Tissue Analysis
Published on: June 26, 2019
8.8K
08:26MAME Models for 4D Live-cell Imaging of Tumor: Microenvironment Interactions that Impact Malignant Progression
Published on: February 17, 2012
14.6K
相关概念视频
The Tumor Microenvironment
6.6K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
6.6K
Tumor Immunotherapy
515
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.
515
Targeted Cancer Therapies
7.6K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.6K
