针对野生类型的EGFR及其耐药突变体,使用erlotinib-aptamer结合剂
Yan Li1, Jian Song1, Ruixin Ge1
1Center for Cell Structure and Function, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, 250014, China.
European journal of medicinal chemistry
|June 24, 2025
概括
一种新型的溶酶体向化明体 (LYTAC) 有效降解表皮生长因子受体 (EGFR) 和其在非小细胞肺癌 (NSCLC) 中的耐药突变. 这种新方法克服了耐药性,显示了改善癌症治疗的前景.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药物开发 药物开发
背景情况:
- 表皮生长因子受体 (EGFR) 突变驱动非小细胞肺癌 (NSCLC).
- 对EGFR-氨酸激酶抑制剂 (EGFR-TKI) 获得的耐药性限制了晚期NSCLC的治疗疗效.
- 针对EGFR降解提供了一种克服抗性的策略.
研究的目的:
- 开发一种使用 lysosome-targeting chimera (LYTAC) 方法的全新EGFR降解剂.
- 评估LYTAC在降解野生类型和耐药EGFR突变的疗效.
- 评估LYTAC在EGFR驱动癌症中的治疗潜力.
主要方法:
- 埃洛提尼布 (EGFR 抑制剂) 与向 IGF2R 的 受体结合,形成一个 LYTAC.
- 产生和优化具有不同链接长度的EGFR降解剂.
- 在体外和体内评估EGFR降解和抗瘤活性.
主要成果:
- LYTAC LY-dE#5证明了野生型EGFR和临床相关突变的有效降解 (19del,L858R/T790M,19del/T790M/C797S,L858R/T790M/C797S).
- 与Osimertinib相比,LY-dE#5表现出更高的抗瘤活性.
- 在体外和体内观察到EGFR驱动的癌细胞生长的有效抑制.
结论:
- 开发出来的埃洛尼布-阿普塔默结合物 (LYTAC) 是一种有效的泛EGFR降解剂.
- 这种LYTAC方法成功地针对EGFR进行 lysosomal降解,克服TKI耐药性.
- 该LYTAC证明了用于治疗NSCLC和其他EGFR驱动的恶性瘤的翻译潜力.
更多相关视频
相关概念视频
Targeted Cancer Therapies
7.8K
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...
7.8K
Mitogens and the Cell Cycle
7.0K
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
7.0K
Combination Therapies and Personalized Medicine
5.1K
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...
5.1K
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
228
Endothelins (ETs) are potent vasoactive peptides critical in the human body's various physiological and pathological processes. One of the most promising therapeutic strategies for treating pulmonary arterial hypertension (PAH) involves counteracting the effects of these endothelins using a class of drugs known as endothelin receptor antagonists.
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme...
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme...
228
Treatment Resistant Cancers
3.4K
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...
3.4K
Transducer Mechanism: Enzyme-Linked Receptors
2.8K
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include:
2.8K


