切利尼布通过抑制蛋白质折叠反应来克服多发性骨髓瘤中的蛋白酶体抑制剂抵抗
Andrej Besse1, Marianne Kraus2, Tiberiu Totu3
1Laboratory of Experimental Oncology, Division Oncology and Hematology, HOCH Health Ostschweiz, Cantonal Hospital St. Gallen, St. Gallen, Switzerland; Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
Haematologica
|December 11, 2025
概括
切利尼布通过阻断IGF-1R/INSR信号传递来克服多发性骨髓瘤中的蛋白酶体抑制剂耐药性. 这种与卡菲尔佐米布的联合治疗增强了细胞死亡,需要进行临床研究.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 蛋白质酶抑制剂 (PI) 耐药性是多发性骨髓瘤 (MM) 治疗中的一个重大挑战.
- 为了生存,MM细胞严重依赖胰岛素和IGF-1信号通路 (IGF-1R/INSR).
- 了解耐药机制对于开发有效的MM疗法至关重要.
研究的目的:
- 确定新的治疗策略,以克服MM中的PI耐药性.
- 为了研究ALK抑制剂谢里替尼 (ceritinib) 在MM治疗中与卡菲尔佐米布 (carfilzomib) 结合的潜力.
- 阐明塞里蒂尼布在PI治疗下影响MM细胞存活的分子机制.
主要方法:
- 使用了体外和体外MM模型.
- 检测了来自患者的初级MM细胞.
- 评估了塞利尼布对IGF-1R/INSR信号传导和下游通路 (PI3K/AKT/mTORC1) 的影响.
- 评估了谢里替尼和卡菲尔佐米布的协同效应.
主要成果:
- 切利尼尼抑制IGF-1R/INSR活性和MM细胞下游信号传递.
- 与卡菲尔佐米布 (carfilzomib) 结合的塞里尼布在跨模型的PI抗性克服方面表现出协同效果.
- 切利尼布通过抑制热冲击蛋白 (HSP70,BiP) 抑制了适应性应激反应,这对蛋白质稳定至关重要.
- 这导致MM细胞中的蛋白质聚合增加,ER压力和亡.
结论:
- 用卡菲尔佐米布重新定位谢里替尼是克服MMPI耐药性的安全和翻译相关的策略.
- 组合疗法向MM细胞的IGF-1R/INSR介导的适应性应激反应.
- 需要对复发性/耐药性MM进行进一步的临床研究.
相关概念视频
Targeted Cancer Therapies
8.6K
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...
8.6K
Treatment Resistant Cancers
3.7K
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...
3.7K
mTOR Signaling and Cancer Progression
4.6K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
4.6K
PI3K/mTOR/AKT Signaling Pathway
5.3K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
5.3K
Combination Therapies and Personalized Medicine
5.8K
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...
5.8K
The Unfolded Protein Response
6.2K
The ER is the hub of protein synthesis in a cell. It has robust systems to quality control protein folding and also for degradation of terminally misfolded proteins. Under normal conditions, a small proportion of misfolded proteins that cannot be salvaged need to be transported to the cytoplasm by the ER-associated degradation or ERAD pathways. However, if the ERAD cannot handle the misfolded proteins, the cell activates the unfolded protein response or UPR to adjust the protein folding...
6.2K


