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相关概念视频

Binary Fission01:20

Binary Fission

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Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
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Binary Fission01:26

Binary Fission

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Binary fission is the primary mode of asexual reproduction in prokaryotes, such as bacteria. It results in the production of two genetically identical daughter cells. This highly efficient process ensures the rapid propagation of bacterial populations under favorable conditions and involves coordinated cellular and molecular events.DNA Replication and SeparationThe process begins with the replication of the bacterial chromosome. The circular DNA molecule unwinds at a specific origin of...
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Eukaryotic Evolution01:24

Eukaryotic Evolution

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The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
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Methods of Nuclear Reprogramming01:24

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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...
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Prokaryotic Cells01:51

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Prokaryotes are small unicellular organisms that include the domains—Archaea and Bacteria. Bacteria include many common organisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize proteins....
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Prokaryotes are small unicellular organisms that include the domains — Archaea and Bacteria. Bacteria include many common microorganisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
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Author Spotlight: Exploring Cytoskeletal Dynamics to Unveil Novel Antibiotics Through Innovative Cell-Based Assays
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一个可分裂的人造真核细胞模型

Wei Zong1, Shenghua Ma1, Xunan Zhang1

  • 1State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , 92 West Da-Zhi Street, Harbin 150001, China.

Journal of the American Chemical Society
|July 6, 2017
PubMed
概括
此摘要是机器生成的。

研究人员制造出具有囊内囊结构的人工细胞. 这种模型成功地放大了DNA,并通过裂变将其分成子细胞,从而推进了人造细胞的发展.

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科学领域:

  • 生物技术和合成生物学
  • 细胞工程和仿生学

背景情况:

  • 人工细胞对于生物技术和医学的发展至关重要.
  • 开发功能性,自我复制的人工细胞模型仍然是一个重大挑战.

研究的目的:

  • 设计一种能够操纵和分裂DNA的新型细胞大小的囊中囊 (VIV) 结构.
  • 为了证明VIV系统中的DNA的放大和受控分区.

主要方法:

  • 用于DNA封装的内部囊泡 (IV) 构建囊泡中的 (VIV) 结构.
  • 使用聚合酶链反应 (PCR) 进行IV内DNA放大.
  • 诱导透应激引发VIV裂变和DNA内容的分裂.

主要成果:

  • 在VIV结构的内囊 (IV) 中使用PCR成功封装和放大DNA.
  • 实现了对VIVs的受控裂变为子VIVs,将增强的DNA分割为子IVs.
  • 通过光显微镜量化了大约20%的裂变速率.

结论:

  • 开发的VIV结构为人工细胞系统提供了一个功能模型.
  • 在人工细胞模型中展示了DNA放大和内容分化的方法.
  • 代表了为未来应用创造复杂,可裂变的人造细胞模型的重大进展.