相关实验视频
Updated: Jun 4, 2025

10:19
Derivation of Mouse Trophoblast Stem Cells from Blastocysts
Published on: June 8, 2010
18.1K
MAP3K4信号调节了 HDAC6 和 TRAF4 的共同表达和稳定在热囊细胞干细胞中的作用
Hannah A Nelson1, Nathan A Mullins1, Amy N Abell1
1Department of Biological Sciences, University of Memphis, Memphis, Tennessee, USA.
The Journal of biological chemistry
|December 22, 2024
概括
线素激活蛋白质激酶激酶4 (MAP3K4) 失活会影响胎盘生长. 这项研究揭示了对胎盘发育和胎儿生长至关重要的MAP3K4,TRAF4和HDAC6联合调节机制.
科学领域:
- 生殖生物学和发育科学.
- 分子和细胞生物学分子和细胞生物学
- 遗传学和表观遗传学
背景情况:
- 线素激活蛋白激酶激酶4 (MAP3K4) 对于胎儿和胎盘生长至关重要.
- MAP3K4的失活会导致胎盘缺陷和胎儿生长受限,因为它会破坏关键信号通路并改变基因素脱乙酶6 (HDAC6) 的活性.
- 瘤坏死因子受体相关因子4 (TRAF4) 在胎盘发育中的作用及其与MAP3K4的相互作用尚未得到充分了解.
研究的目的:
- 研究TRAF4在胎盘发育中的作用及其与MAP3K4.4的关联.
- 阐明在热原体干细胞中由MAP3K4和HDAC6共同调节TRAF4的分子机制.
- 在胎盘迷宫发育过程中检查MAP3K4,TRAF4和HDAC6之间的相互作用.
主要方法:
- 对小鼠胎盘单细胞RNA-Seq数据的分析,以评估基因联合表达模式.
- 实验性操纵MAP3K4活动和HDAC6表达在托罗夫细胞干细胞 (TS) 中.
- 在不同的实验条件下进行蛋白质复合体形成测定和TRAF4表达的评估.
主要成果:
- 在早期的胎盘前代体中,TRAF4与MAP3K4共同表达,在分化的热囊细胞中与HDAC6共同表达.
- 在MAP3K4-无活性的细胞中和在抑制MAP3K4-依赖性通路时,TRAF4的表达被上调.
- HDAC6与TRAF4直接相互作用,促进TRAF4的表达,独立于其脱乙酶活性.
结论:
- MAP3K4和HDAC6协同调节 trofhoblast干细胞中的TRAF4表达.
- 在胎盘迷宫分化过程中,TRAF4联合表达的动态切换从MAP3K4到HDAC6发生.
- 这些发现揭示了涉及MAP3K4,TRAF4和HDAC6的新型调节机制,这对胎盘发育至关重要.
相关概念视频
Regulation of Angiogenesis and Blood Supply
2.5K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.5K
TGF - β Signaling Pathway
7.2K
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...
7.2K
PI3K/mTOR/AKT Signaling Pathway
3.4K
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...
3.4K
Master Transcription Regulators
6.9K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
6.9K
Hedgehog Signaling Pathway
7.3K
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
7.3K
mTOR Signaling and Cancer Progression
3.7K
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...
3.7K

