由酶指导的线粒体内部聚合,用于增强抗癌治疗,而不会产生耐药性
Sangpil Kim1, Yeji Lee1, Min-Seok Seu1
1Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
概括
化学家们开发了一种新的方法,用于控制癌细胞中的细胞内聚合,使用铁酶介导的反应. 这种有针对性的方法提供药物并选择性地触发聚合,导致癌细胞死亡并克服耐药性.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 癌症生物学 癌症生物学
背景情况:
- 控制的细胞内聚合对于生物大分子相互作用至关重要,但在反应控制和目标外毒性方面面临挑战.
- 现有的方法缺乏特异性,导致对非癌细胞的潜在伤害.
研究的目的:
- 开发用于癌症治疗的选择性细胞内聚合策略.
- 为了利用铁酶酶活性在癌细胞内的向聚合.
- 在癌症治疗中增强药物输送和克服耐药性.
主要方法:
- 乙受保护的单体被设计成只有在铁酶裂变时才能聚合.
- 单体与多克索鲁比辛一起组装成小粒,用于细胞内输送.
- 该策略利用了化酶在癌细胞和线粒体向中的特定过度表达.
主要成果:
- 铁酶介导的聚合发生在癌细胞中选择性地,而不是仅在氧化应激下.
- 载有多克索鲁比的细胞促进了有效的细胞内药物和单体递送.
- 聚合破坏了癌细胞线粒体,诱导选择性细胞死亡并克服耐药性.
结论:
- 提奥酶介导的细胞内聚合为抗癌治疗提供了一种高度选择性的方法.
- 这种方法有效地向各种癌细胞,包括耐药类型.
- 线粒体向的聚合物克服了耐药性,即使在重复治疗.
相关概念视频
Targeted Cancer Therapies
7.5K
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...
7.5K
Treatment Resistant Cancers
3.3K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.3K
Electron Transport Chain: Complex I and II
12.8K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
12.8K
Combination Therapies and Personalized Medicine
4.9K
Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
4.9K
Adaptive Mechanisms in Cancer Cells
5.7K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.7K
Drugs that Stabilize Microtubules
2.0K
Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
2.0K


