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関連する概念動画

Nuclear Protein Sorting01:34

Nuclear Protein Sorting

4.6K
Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
4.6K
Nuclear Export of mRNA02:31

Nuclear Export of mRNA

7.7K
Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
7.7K
Methods of Nuclear Reprogramming01:24

Methods of Nuclear Reprogramming

1.8K
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
1.8K
Introduction to Nuclear Reprogramming01:14

Introduction to Nuclear Reprogramming

1.9K
Nuclear reprogramming is the process of switching gene expression of one cell type to that of another cell type, usually from a differentiated cell state to an undifferentiated cell state. Differentiation occurs during processes such as development and morphogenesis, tissue regeneration, and malignancy. Cells can also be artificially induced to reprogram their gene expression by techniques such as nuclear transfer, induced pluripotency, and cell fusion. Such techniques have many applications in...
1.9K
Nuclear Export01:42

Nuclear Export

3.6K
The nucleus restricts several proteins within and allows others to pass. The restricted proteins possess a nuclear retention sequence or NRS, anchoring them to the nuclear lamins and preventing their transport to the cytosol. The non-restricted proteins, after their synthesis, are transported to their site of action, such as the cytosol or other organelles, with the help of nuclear export signals or NES.
NES are of three types- the canonical 10-residue long leucine-rich signal and other...
3.6K
Regulation of Nuclear Protein Sorting01:45

Regulation of Nuclear Protein Sorting

2.4K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
2.4K

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Why Quantification Matters: Characterization of Phenotypes at the Drosophila Larval Neuromuscular Junction
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Why Quantification Matters: Characterization of Phenotypes at the Drosophila Larval Neuromuscular Junction

Published on: May 12, 2016

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核の形状はループエクストルーションプログラムによって形成されます.

Indumathi Patta1, Maryam Zand2, Lindsay Lee3

  • 1Department of Molecular Biology, University of California, San Diego, La Jolla, CA, USA.

Nature
|February 14, 2024
PubMed
まとめ
この要約は機械生成です。

科学者は ニュートロフィルの祖先における DNAループの流出を止めることで 多葉核の組み立てが生じることを発見しました この発見は,中性粒子の形状の形成を明らかにし,腫瘍における細胞移動のための核の形状の設計を示唆しています.

さらに関連する動画

Preparation of Tunable Extracellular Matrix Microenvironments to Evaluate Schwann Cell Phenotype Specification
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Preparation of Tunable Extracellular Matrix Microenvironments to Evaluate Schwann Cell Phenotype Specification

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A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton
05:47

A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton

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関連する実験動画

Last Updated: Jul 3, 2025

Why Quantification Matters: Characterization of Phenotypes at the Drosophila Larval Neuromuscular Junction
10:41

Why Quantification Matters: Characterization of Phenotypes at the Drosophila Larval Neuromuscular Junction

Published on: May 12, 2016

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Preparation of Tunable Extracellular Matrix Microenvironments to Evaluate Schwann Cell Phenotype Specification
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Preparation of Tunable Extracellular Matrix Microenvironments to Evaluate Schwann Cell Phenotype Specification

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A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton
05:47

A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton

Published on: July 29, 2018

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科学分野:

  • 細胞生物学
  • 遺伝学
  • 血液学

背景:

  • 中性粒子は,密度の高い組織を動かすために不可欠な,多葉 (ポリモルフォ核) の形状を示します.
  • これらの複雑な核構造の組み立てを制御する正確なメカニズムは ほとんど解明されていません

研究 の 目的:

  • 中性粒子の原始体におけるポリモルフォ核の形成におけるループ流出の役割を調査する.
  • 中性粒子の分化過程で染色体構造の変化の分子基礎を理解する.

主な方法:

  • 単核中性粒子の原始体におけるループエクストルーション因子 (NIPBL) の急性減少
  • 核形態,核体積,細胞サイクル状態,遺伝子発現の分析
  • Hi-Cを用いたクロマチン構造分析とトポロジカル・アソシエイトドメイン (TAD) 相互作用の評価.

主要な成果:

  • NIPBLを枯渇させると,中性粒子の分化を模倣して,ヒースホー,リング,およびハイパーセグメンテッドの核の形成が誘発された.
  • NIPBLの枯渇は,核の体積の減少,細胞サイクル停止,そして中性粒子の特定の遺伝子の活性化につながった.
  • クロマチンの改造には,メガループの濃縮とTAD相互作用の喪失が含まれ,分化中性粒子の構造に似ている.

結論:

  • NIPBLによるループ挤出は,中性粒子の祖先における系統特有の染色体構造のプログラミングに不可欠である.
  • このプロセスにより,中性粒子の移動に必要な葉核構造が形成されます.
  • 発見は核の形状の組み立てと癌の細胞移動の設計のための潜在的な戦略の洞察を提供します.