通过激活PKC δ及其下游分子,PMA在Ph+ ALL中发挥抗白血病作用
Xu Wang1,2, Jinfeng Tan3, Jie Tang3
1Department of Laboratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Cancer cell international
|October 22, 2025
概括
在费城染色体阳性急性淋巴细胞白血病 (Ph+ ALL) 中,Phorbol 12-myristate 13-acetate (PMA) 通过激活蛋白激酶C delta (PKCδ) 显示出抗白血病作用. 这项研究突出了PMA.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 费城染色体阳性急性淋巴细胞白血病 (Ph+ ALL) 是一个高风险的亚型,预后不佳.
- 目前的治疗方法,如氨酸激酶抑制剂 (TKI),可以改善结果,但长期存活率仍然有限.
- 对于Ph+ALL,迫切需要新的治疗策略.
研究的目的:
- 为了研究Phorbol 12-myristate 13-acetate (PMA) 对Ph+ALL细胞的生物效应.
- 阐明PMA在Ph+ALL中的作用的潜在分子机制.
- 评估PMA对Ph+ALL的治疗潜力.
主要方法:
- 用PMA治疗Ph+ALL细胞系 (SUP-B15,BP190) 的方法.
- 评估细胞增殖,细胞亡,细胞周期分布和分化.
- 使用西部斑块,qRT-PCR和RNA测序对蛋白质和基因表达变化的分析.
- 在小鼠模型中的体内评估.
主要成果:
- PMA显著抑制了增殖,并促进了Ph+ ALL细胞的亡和分化.
- 普马的抗白血病作用与蛋白激酶C三角酶 (PKCδ) 的激活有关.
- 下游信号分子,包括p-ERK和p21,通过PKCδ激活被PMA调节.
结论:
- PMA对Ph+ ALL具有显著的抗白血病活性.
- 激活PKCδ及其下游途径调解PMA的治疗作用.
- PMA作为Ph+ALL的潜在治疗剂具有前景.
关键词:
急性淋巴细胞白血病 (Acute Lymphoblastic Leukemia) 是一种急性淋巴细胞白血病.在 PKC PKC 中,你会发现.在PMA中,PMA是PMA.费城染色体是什么意思 费城染色体是什么意思在p-ERKK.更多相关视频
相关概念视频
02:23Abnormal Proliferation
5.1K
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...
5.1K
01:19Interactions Between Signaling Pathways
7.2K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
7.2K
01:25cAMP-dependent Protein Kinase Pathways
8.3K
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
8.3K
01:07MAPK Signaling Cascades
7.9K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
7.9K
01:22PI3K/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
01:22Amplifying Signals via Enzymatic Cascade
17.2K
When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze...
17.2K