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Related Experiment Video

Updated: Jan 25, 2026

Rapid Encapsulation of Reconstituted Cytoskeleton Inside Giant Unilamellar Vesicles
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DNA Length-dependent Division of a Giant Vesicle-based Model Protocell.

Muneyuki Matsuo1,2, Yumi Kan3, Kensuke Kurihara2,4

  • 1Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo, 153-8902, Japan.

Scientific Reports
|May 8, 2019
PubMed
Summary

The length of encapsulated DNA influences vesicle division in a model protocell. This suggests DNA length may have been crucial for the self-reproduction of early protocells.

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Area of Science:

  • Biochemistry
  • Origin of Life Research
  • Synthetic Biology

Background:

  • Deoxyribonucleic acid (DNA) carries genetic information essential for life.
  • The physical and chemical properties of DNA can influence cellular structures.
  • Understanding protocell division is key to understanding the origin of life.

Purpose of the Study:

  • To investigate the impact of encapsulated DNA length on vesicle division.
  • To explore the role of DNA-lipophilic catalyst interactions in protocell dynamics.
  • To model the self-reproduction mechanisms of early protocells.

Main Methods:

  • Construction of a polyethylene glycol-grafted giant vesicle system.
  • Incorporation of DNA, lipophilic catalysts, and Polymerase Chain Reaction (PCR) components.
  • Observation and analysis of vesicle growth and division in relation to DNA length.

Main Results:

  • Vesicle division was found to be dependent on the length of the encapsulated DNA.
  • Self-assembly of an internal supramolecular catalyst was observed.
  • A direct causal link between DNA length and vesicle self-reproduction capacity was suggested.

Conclusions:

  • DNA length is a critical factor in the division of these model protocells.
  • Supramolecular catalyst self-assembly may mediate the relationship between DNA and reproduction.
  • These findings offer insights into the functional role of nucleic acids in prebiotic protocell division.