相关实验视频

Updated: May 15, 2025

Rapid Analysis of Circadian Phenotypes in Arabidopsis Protoplasts Transfected with a Luminescent Clock Reporter

Rapid Analysis of Circadian Phenotypes in Arabidopsis Protoplasts Transfected with a Luminescent Clock Reporter

Published on: September 17, 2016

黑色素减轻Cd诱导的增长抑制和RNA m6A高甲基化,通过触发MMR介导的DNA损伤反应

Zihan Tang¹, Hetong Wang¹, Xianpeng Wang¹

¹Liaoning Key Laboratory of Urban Integrated Pest Management and Ecological Security, College of Life Science and Bioengineering, Shenyang University, Shenyang 110044, China.

Plants (Basel, Switzerland)

|May 14, 2025

概括

黑色素 (MT) 减轻了 (Cd) 毒性和 Arabidopsis的生长抑制. 它还调节RNA N6-甲基氨酸 (m⁶A) 甲基化,特别是在不匹配修复 (MMR) 缺乏的植物中,为植物修复提供了洞察力.

科学领域:

植物科学植物科学
分子生物学分子生物学
环境科学环境科学

背景情况:

(Cd) 毒性严重影响植物生长,涉及RNA甲基化的机制尚不清楚.
众所周知,黑素 (MT) 可减轻重金属毒性,但它对Cd诱导的增长抑制和RNAm6A甲基化的特定影响需要阐明.
不匹配修复 (MMR) 缺陷加剧了Cd压力,这表明DNA修复和植物对重金属的反应之间存在联系.

研究的目的:

调查黑素 (MT) 在缓解Cd诱导的Arabidopsis thaliana生长抑制中的作用.
阐明MT如何影响Cd压力下的RNA N6-甲基氨酸 (m⁶A) 甲基化动态.
探索MT,Cd压力和不匹配修复 (MMR) 途径在调节植物生长和基因表达中的相互作用.

主要方法:

阿拉比多普西斯 (Arabidopsis thaliana) 在接受梅拉 (Melatonin,MT) 治疗和不接受治疗时都受到 (Cd) 压力.
量化了增长抑制,并测量了RNA m6A水平.
对m⁶的"写","擦"和"读"基因进行基因表达分析,包括那些参与MMR (例如msh2,msh6) 的基因.

主要成果:

MT显著缓解了Cd诱导的生长抑制,并显著减少了MMR缺乏突变 (msh2, msh6).
Cd压力诱导了m⁶A过甲基化,在MMR缺乏的苗木中进一步升高;MT降低了m⁶A水平.
MT调节了m⁶A调节基因的表达,并且在Cd和Copper (Cu) 压力下促进了MMR基因表达,尽管整体抑制.

结论:

黑色素 (MT) 有效地减轻 (Cd) 毒性和相关的 Arabidopsis 的增长抑制,部分是通过调节RNA m6A甲基化.
这项研究强调了MT,Cd压力,RNA m⁶A修饰和DNA不匹配修复 (MMR) 途径之间的关键相互作用.
这些发现为MT的修复作用提供了新的分子洞察力,并建议在 (Cd) 植物修复中潜在的应用.

关键词:

阿拉比多普西斯 (Arabidopsis) 是一种植物.Cd 毒理学有毒性修复DNA的修复DNA的修复在RNA m6A甲基化过程中.细胞循环中的细胞循环.

更多相关视频

Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters

Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters

Published on: September 27, 2012

In Vitro Bioluminescence Assay to Characterize Circadian Rhythm in Mammary Epithelial Cells

In Vitro Bioluminescence Assay to Characterize Circadian Rhythm in Mammary Epithelial Cells

Published on: September 28, 2017

相关概念视频

Circadian Rhythms and Gene Regulation

Circadian Rhythms and Gene Regulation

The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...

Management of Insomnia

Management of Insomnia

The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...

Transcription Attenuation in Prokaryotes

Transcription Attenuation in Prokaryotes

Transcriptional attenuation occurs when RNA transcription is prematurely terminated due to the formation of a terminator mRNA hairpin structure. Bacteria use these hairpins to regulate the transcription process and control the synthesis of several amino acids including histidine, lysine, threonine, and phenylalanine. Transcription attenuation takes place in the non-coding regions of mRNA.
There are several different mechanisms used to attenuate transcription. In ribosome mediated...

Master Transcription Regulators

Master Transcription Regulators

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...

Sedatives and Hypnotics Drugs: Miscellaneous Agents

Sedatives and Hypnotics Drugs: Miscellaneous Agents

Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...

Abnormal Proliferation

Abnormal Proliferation

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...