相关实验视频
Updated: May 31, 2025

09:52
Trans-Tympanic Drug Delivery for the Treatment of Ototoxicity
Published on: March 16, 2018
9.3K
柏柏鲁宾通过促进叶酸生物合成,保护免受西斯普拉丁诱导的耳毒性
Zhuang Miao1, Danyang Chang1, Xiaodong Du1
1Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China.
Frontiers in pharmacology
|January 24, 2025
概括
柏柏鲁 (BB) 通过减少氧化应激和亡来保护免受西斯普拉丁诱导的听力损伤. 这种化合物增强了叶酸生物合成,为耳毒性提供了潜在的治疗策略.
科学领域:
- 耳毒性研究研究
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 西斯是一种广泛使用的化疗剂,具有显著的耳毒性副作用.
- 耳毒性或听力损伤是西斯治疗的常见和剂量限制性毒性.
- 鉴定抗西斯胺诱导性听力损失的保护剂对于改善癌症治疗结果至关重要.
研究的目的:
- 为了研究柏柏鲁宾 (BB) 对西斯普拉丁诱导的耳毒性产生保护作用.
- 阐明BB的保护作用的基础分子机制.
- 在体外和体外模型中评估BB的疗效.
主要方法:
- HEI-OC1细胞活力测试 (CCK-8) 和体外耳扩展培养.
- 使用Annexin V-PI,Cleaved Caspase-3和TUNEL染色进行亡评估.
- 反应性氧物种 (ROS) 的测量 (DCFH-DA,MitoSOX,JC-1) 和基因表达分析 (RNA-Seq,qRT-PCR).
- 在体内研究包括对毛细胞计数的免疫光和小鼠的听觉脑干反应 (ABR) 测试.
主要成果:
- 在实验室中,BB显著提高了HEI-OC1细胞存活率,并保护了耳毛细胞.
- BB治疗降低了西斯普拉丁诱导的亡标志物和降低了细胞内ROS水平.
- 在体内,BB改善了小鼠的耳毛细胞存活率,并减轻了小鼠的听力损失.
- RNA-seq和qRT-PCR确定了BB对参与叶酸生物合成的基因的影响.
结论:
- 柏柏鲁 (BB) 显示出显著的保护作用,防止西斯产生的耳毒性.
- BB通过降低氧化应激,抑制亡,促进叶酸生物合成来起作用.
- 这些发现凸显了BB作为预防化疗引起的听力损失的潜在治疗剂.
相关概念视频
Drugs that Destabilize Microtubules
1.9K
Microtubules are dynamic structures and can be regulated by microtubule targeting agents (MTAs). Microtubule destabilizing drugs are a class of MTAs that destabilize and prevent microtubules' polymerization. Both natural and synthetic chemicals can be found under this class of drugs. Vincristine and vinblastine, two vinca alkaloids, and colchicine were among the first to be discovered. These drugs can affect cells in various ways, either by inducing a change in cell morphology, preventing...
1.9K
Long-patch Base Excision Repair
7.0K
Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:
7.0K
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
Base Excision Repair
22.0K
One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
The first step of...
22.0K
Treatment Resistant Cancers
3.2K
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...
3.2K
Electron Transport Chain: Complex I and II
10.7K
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...
10.7K

