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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 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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A Fissionable Artificial Eukaryote-like Cell Model.

Wei Zong1, Shenghua Ma1, Xunan Zhang1

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Researchers created artificial cells with a vesicle-in-vesicle structure. This model successfully amplified DNA and divided it between daughter cells using fission, advancing artificial cell development.

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Area of Science:

  • Biotechnology and synthetic biology
  • Cellular engineering and biomimetics

Background:

  • Artificial cells are crucial for advancing biotechnology and medicine.
  • Developing functional, self-replicating artificial cell models remains a significant challenge.

Purpose of the Study:

  • To engineer a novel cell-sized vesicle-in-vesicle (VIV) structure capable of DNA manipulation and division.
  • To demonstrate the amplification and controlled partitioning of DNA within the VIV system.

Main Methods:

  • Construction of vesicle-in-vesicle (VIV) structures with an inner vesicle (IV) for DNA encapsulation.
  • Utilizing polymerase chain reaction (PCR) for DNA amplification within the IV.
  • Inducing osmotic stress to trigger VIV fission and DNA content division.

Main Results:

  • Successfully encapsulated and amplified DNA within the inner vesicle (IV) of the VIV structure using PCR.
  • Achieved controlled fission of VIVs into daughter VIVs, partitioning the amplified DNA into the daughter IVs.
  • Quantified a fission rate of approximately 20% via fluorescence microscopy.

Conclusions:

  • The developed VIV structure provides a functional model for artificial cell systems.
  • Demonstrated a method for DNA amplification and content division in an artificial cell model.
  • Represents a significant advancement towards creating sophisticated, fissionable artificial cell models for future applications.