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Golgi apparatus partitioning during cell division.

Catherine Rabouille1, Eija Jokitalo

  • 1UMC Utrecht, Department of Cell Biology, AZU rm G02.525, Heidelberglaan 100 3584CX Utrecht, The Netherlands. C.Rabouille@lab.azu.nl

Molecular Membrane Biology
|July 10, 2003
PubMed
Summary

The Golgi apparatus fragments during cell division, with new models suggesting it either partitions as stable clusters or reabsorbs into the endoplasmic reticulum. Understanding Golgi segregation mechanisms is key to cell biology.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • The Golgi apparatus is a crucial organelle involved in protein modification and transport.
  • Its behavior during mitosis, particularly its segregation into daughter cells, has been a subject of debate.

Purpose of the Study:

  • To critically review existing models of Golgi apparatus segregation during mitosis.
  • To summarize current knowledge on the molecular mechanisms of Golgi disassembly and reassembly.
  • To explore how studying other organisms can advance understanding of Golgi dynamics.

Main Methods:

  • Review of classical biochemical and morphological studies.
  • Analysis of data from live cell imaging, electron microscopy, and tagged Golgi resident enzymes (GFP, HRP).

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Main Results:

  • Classical models proposed passive, stochastic partitioning of fragmented Golgi vesicles.
  • Recent studies indicate stable mitotic Golgi clusters partition dependently on the microtubule spindle.
  • An alternative model suggests Golgi reabsorption into the endoplasmic reticulum during mitosis.

Conclusions:

  • Two main models for Golgi apparatus mitotic segregation exist: stable cluster partitioning and ER reabsorption.
  • Molecular mechanisms of Golgi dynamics during cell division require further elucidation.
  • Comparative studies across different organisms may reveal novel insights into Golgi segregation.