向DNA2克服了多发性骨髓瘤中的代谢重编程
Natthakan Thongon1, Feiyang Ma2, Natalia Baran1
1Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Nature communications
|February 8, 2024
概括
多发性骨髓瘤细胞通过重新连接新陈代谢来抵抗DNA损伤疗法. 准线粒体修复蛋白DNA2会削弱这种抵抗力,揭示了这些癌细胞的新疗法脆弱性.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 代谢工程是代谢工程.
背景情况:
- 抗DNA损伤是成功治疗多发性骨髓瘤 (MM) 的DNA损伤疗法的重要障碍.
- 干白素增强剂结合因子2 (ILF2),一种DNA损伤调节剂,在大多数耐火性疾病的MM患者中过度表达.
- 针对ILF2的反感性寡核酸 (ASO) 疗法正在为MM治疗进行研究.
研究的目的:
- 阐明多发性骨髓瘤细胞对破坏DNA的疗法,特别是ILF2 ASO产生抗性的机制.
- 确定参与MM细胞适应和在DNA损伤压力下生存的关键分子参与者.
主要方法:
- 利用CRISPR/Cas9查来识别ILF2 ASO治疗期间MM细胞存活所必需的基因.
- 研究了MM细胞对DNA损伤的反应中的代谢重新连接.
- 评估了线粒体DNA修复蛋白DNA2在抵消DNA损伤中的作用.
主要成果:
- 多重骨髓瘤细胞表现出适应性代谢重新连接,以保持能量平衡并促进DNA损伤后的生存.
- 线粒体DNA修复蛋白DNA2的功能丧失显著损害了MM细胞克服ILF2 ASO诱导的DNA损伤的能力.
- DNA2被确定为对抗MM细胞中氧化DNA损伤的必需物.
结论:
- 毫米细胞利用代谢适应来幸存DNA损伤的侮辱.
- 线粒体DNA修复蛋白DNA2对于MM细胞抵抗DNA损伤至关重要.
- 向DNA2代表了一个潜在的治疗策略,利用MM细胞的代谢脆弱性.
相关概念视频
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
Abnormal Proliferation
4.5K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.5K
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
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


