香烟烟雾诱导的上皮细胞转变为半机体:关于细胞机制和信号通路的洞察
Sarah Mohammed Alqithami1, Amrita Machwe1, David K Orren1
1Department of Toxicology and Cancer Biology, University of Kentucky College of Medicine, Lexington, KY 40536, USA.
Cells
|September 14, 2024
概括
香烟烟雾 (CS) 通过复杂的分子通路在肺细胞中触发了表皮细胞到介质酶细胞的过渡 (EMT). 然而,目前的研究依赖于二维文化,忽视了遗传因素,需要先进的研究.
科学领域:
- 肺细胞生物学 肺细胞生物学
- 分子毒理学 分子毒理学
- 癌症研究 癌症研究
背景情况:
- 暴露于香烟烟雾 (CS) 是呼吸道疾病的主要危险因素.
- 皮质到介质细胞转换 (EMT) 是一个关键的细胞过程,与疾病进展有关.
- 了解人类支气管上皮细胞 (HBEC) 中CS诱导的EMT对于开发治疗策略至关重要.
研究的目的:
- 审查HBEC中CS诱导的EMT的分子机制.
- 识别当前方法论中的研究差距和局限性.
- 为未来研究CS诱导的EMT提供基础.
主要方法:
- 在HBECs中调查CS诱导的EMT的研究的文献综述.
- 参与CS诱导EMT的信号通路的分析,包括WNT/β-catenin,TGF-β/SMAD,缺氧,氧化应激,PI3K/Akt和NF-κB.
- 批判性评估研究方法,重点关注细胞培养模型,并考虑遗传/表观遗传因素.
主要成果:
- 通过复杂的分子信号通路,CS在HBEC中诱导EMT.
- 目前的研究主要使用二维细胞培养,这可能会限制生物相关性.
- 在最近的研究中,CS诱导的EMT的遗传和表观遗传因素在很大程度上被忽视了.
结论:
- CS诱导的EMT是一个复杂的过程,涉及多个信号通路.
- 需要超越二维培养模型,更准确地模拟体内条件.
- 未来的研究应该包括遗传和表观遗传分析,以全面了解CS诱导的EMT.
相关概念视频
Metastasis
5.5K
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
5.5K
Interactions Between Signaling Pathways
6.2K
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...
6.2K
TGF - β Signaling Pathway
7.3K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.3K
MAPK Signaling Cascades
5.3K
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...
5.3K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.1K
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.1K
Mitogens and the Cell Cycle
6.4K
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...
6.4K


