向PFKFB3,以增强ER+乳腺癌中CDK4/6抑制剂的反应
Research square
|February 23, 2026
概括
循环素依赖性激酶4和6 (CDK4/6) 抑制剂在ER阳性乳腺癌中增加糖解. 将CDK4/6抑制剂与PFKFB3抑制相结合,通过破坏代谢适应来增强抗瘤效应.
科学领域:
- 在瘤学瘤学.
- 代谢途径 代谢途径
- 癌细胞生物学 癌细胞生物学
背景情况:
- 雌激素受体阳性 (ER+) 乳腺癌的治疗通常使用循环林依赖性激酶4和6 (CDK4/6) 抑制剂.
- 对抑制CDK4/6的代谢适应性尚未完全理解.
- 雌激素信号调节ER+乳腺癌的细胞循环和新陈代谢,通过果酸酶-1 (PFK1) 和6-果酸-2-激酶/果糖-2,6-双酸酶3 (PFKFB3) 影响糖溶性流.
研究的目的:
- 为了研究CDK4/6抑制如何影响ER+乳腺癌中的葡萄糖代谢.
- 探索PFKFB3在抑制CDK4/6期间调解代谢适应的作用.
- 评估将PFKFB3抑制与CDK4/6抑制剂相结合的治疗潜力.
主要方法:
- 在ER+乳腺癌细胞系中进行细胞外流量分析,非向代谢学和13C-葡萄糖稳定同位素追踪.
- 在动物模型中使用13C-葡萄糖进行体内代谢追踪.
- 在体外和患者衍生异种移植 (PDX) 模型中评估药理学PFKFB3抑制与CDK4/6抑制剂的结合.
主要成果:
- 抑制CDK4/6增加了糖溶性流量,由高糖解和早期糖溶性中间体的积累表明.
- 抑制PFKFB3阻止了由CDK4/6抑制剂引起的糖溶性流量的增加.
- 尽管葡萄糖溶解增加,但葡萄糖纳入核酸和脂质减少,这表明细胞循环停止期间抑制了代谢.
- 在PDX模型中,联合PFKFB3和CDK4/6抑制显著增强了抗瘤疗效.
结论:
- 在ER+乳腺癌中,CDK4/6抑制会通过增加糖解而限制下游利用来改变葡萄糖代谢.
- 这种新陈代谢的重新连接在细胞循环停止期间产生了依赖于调节的糖分控制来控制恒常状态.
- 与CDK4/6抑制剂一起向PFKFB3可以破坏这种适应状态,增强抗瘤效果并提供潜在的治疗策略.
相关概念视频
Inhibition of Cdk Activity
6.1K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
6.1K
Targeted Cancer Therapies
9.0K
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...
9.0K
Mitogens and the Cell Cycle
8.2K
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...
8.2K
M-Cdk Drives Transition Into Mitosis
6.7K
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
6.7K
Combination Therapies and Personalized Medicine
6.2K
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...
6.2K
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
30
Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...
30


