相关实验视频

Updated: Jan 15, 2026

In Situ Immunofluorescent Staining of Autophagy in Muscle Stem Cells

In Situ Immunofluorescent Staining of Autophagy in Muscle Stem Cells

Published on: June 12, 2017

在肌肉缩过程中,mtORC1信号与铁平衡之间的相互作用

Eunbin Jee¹, Walaa Ouf¹, Jonghan Kim¹

¹Department of Biomedical and Nutritional Sciences, University of Massachusetts Lowell, Lowell, MA, USA.

Free radical biology & medicine

|October 14, 2025

概括

拉巴胺素复合体1 (mTORC1) 的机械标影响骨肌肉的铁代谢和恒温. 失调的mTORC1和铁不平衡导致肌肉退化,这表明肌肉疾病的新治疗点.

科学领域:

肌肉生理学和细胞代谢
铁的稳态和线粒体功能.
肌肉疾病的分子机制

背景情况:

拉巴胺素复合体1 (mTORC1) 的机械标对骨肌肉恒温至关重要,调节生长,蛋白质降解和营养感应.
新兴证据将mtORC1与细胞铁代谢联系起来,这对肌肉能量生产和线粒体健康至关重要.
缺铁和过载都会损害骨肌肉功能,通过线粒体功能障碍,氧化应激和代谢途径激活导致退化.

研究的目的:

审查mTORC1在依赖铁的肌肉疾病中的作用,包括癌症缓冲症,肉症和杜申肌肉衰竭.
探索如何改变mTORC1活动影响主要蛋白质降解系统 (ubiquitin-proteasome,自,神经) 在铁不平衡的骨肌肉条件下.
要突出mTORC1信号传递和骨肌肉铁代谢之间的联系,重点关注铁运输,铁素和自细胞-溶酶体系统.

主要方法:

文献综述侧重于mTORC1信号传递和骨肌肉中的铁代谢之间的相互作用.
在铁失调条件下的肌肉缩背后的分子机制的分析.
检查mTORC1对肌肉组织中蛋白质降解途径和铁调节过程的影响.

主要成果:

改变的mTORC1活性会影响铁不平衡的骨肌肉中的蛋白质降解系统 (ubiquitin-proteasome,自,线).
mTORC1的信号传递与铁代谢密切相关,影响铁运输,铁代谢,以及肌肉中的自细胞-溶酶体系统.
mTORC1和铁代谢之间的交叉声提供了关于肌肉疾病的发病原理的见解,如卡切西亚,肉症和肌肉发育不良.

结论:

mTORC1与铁代谢之间的相互作用是骨肌肉平衡和疾病的关键因素.
了解这种交叉通话提供了对肌肉缩和退化有新的分子见解.
准mTORC1-铁代谢轴为肌肉疾病的潜在治疗策略提供了潜在的治疗策略,这种疾病的特征是铁平衡受损.

关键词:

自自是一种自的过程.卡切西亚卡切西亚卡切西亚杜申尼肌肉发育不良症是什么铁缺乏症铁缺乏症铁过载是因为铁过载.线粒细胞衰变 - - 线粒细胞衰变 (mitophagy) 是一种萨尔科佩尼亚是什么意思萨尔科佩尼亚乌比奎丁-蛋白酶体系统在 mTORC1 的情况下,mTORC1 是

更多相关视频

Author Spotlight: Exploring Orofacial Muscle Regeneration – Insights and Innovations

Author Spotlight: Exploring Orofacial Muscle Regeneration – Insights and Innovations

Published on: December 29, 2023

Intracellular Phosphoflow Cytometry of Acute Myeloid Leukemia Patient-Derived Xenotransplants

Intracellular Phosphoflow Cytometry of Acute Myeloid Leukemia Patient-Derived Xenotransplants

Published on: June 6, 2025

相关概念视频

mTOR Signaling and Cancer Progression

mTOR Signaling and Cancer Progression

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...

PI3K/mTOR/AKT Signaling Pathway

PI3K/mTOR/AKT Signaling Pathway

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...

Cells Coordinate Growth and Proliferation

Cells Coordinate Growth and Proliferation

Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...

Formation of Muscle Fibers from Myoblasts

Formation of Muscle Fibers from Myoblasts

De novo myogenesis, or the formation of muscle fibers, begins during the early embryonic stages. The skeletal muscle is formed from somites– blocks of embryonic cell layers. The somites are further divided into dermatomes, myotomes, sclerotomes, and syndetomes. Among these, the myotomes give rise to muscle fibers.
Muscle progenitor cells (MPCs) are formed from the myotomes. MPCs express genes that encode the transcription factors Pax3 and Pax7. Along with Pax 3/7, other transcription...

Cross-bridge Cycle

Cross-bridge Cycle

As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.

Interactions Between Signaling Pathways

Interactions Between Signaling Pathways

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...