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Cell division and enlargement are processes that require precise control. The control ensures that cell division cannot proceed unless the cell has grown to a specific size. A spherical, dividing cell requires an approximately 1.6X increase in its surface area to double its volume. The secretory pathway also has a significant role in cell membrane enlargement. Secretory vesicles that bud off from the Golgi apparatus and later fuse with the plasma membrane during exocytosis are a major source of...
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The plasma membrane is an essential cellular structure responsible for maintaining cellular integrity and regulating the selective transport of molecules. While bacteria and archaea share the fundamental function of plasma membranes, their structural and molecular differences reflect adaptations to distinct ecological and physiological challenges.Bacterial Plasma MembranesBacterial plasma membranes are predominantly composed of phospholipids with fatty acid chains ester-linked to a glycerol...
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Proteins and neurotransmitters in secretory vesicles can be released from a cell upon vesicle docking, priming, and fusion with the plasma membrane. Vesicles are docked and primed in preparation for the quick exocytosis of their contents in response to a stimulus. The fusion process is mainly carried out by a SNAP Receptor or SNARE complex, consisting of synaptobrevin, syntaxin-1, and SNAP-25.
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In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
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Author Spotlight: Exploring Plasma Membrane Repair Mechanisms with Innovative Thermoplasmonic Puncturing
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Plasma membrane repair.

Norma W Andrews1, Matthias Corrotte1

  • 1Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA.

Current Biology : CB
|April 25, 2018
PubMed
Summary
This summary is machine-generated.

Individual eukaryotic cells can rapidly repair their plasma membrane after injury, preventing cell death. This cell repair process involves sequential, localized remodeling steps, similar to tissue healing.

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Area of Science:

  • Cell biology
  • Biophysics

Background:

  • Tissue wound repair involves complex cellular pathways and recruitment.
  • Plasma membrane repair is a critical single-cell process following injury.
  • Understanding cell membrane repair is crucial for cellular homeostasis.

Purpose of the Study:

  • To investigate the mechanisms of plasma membrane repair in eukaryotic cells.
  • To compare and contrast plasma membrane repair with tissue wound healing.
  • To highlight the importance of studying single-cell repair processes.

Main Methods:

  • Observational studies of cellular injury and repair.
  • Analysis of intracellular and intercellular signaling pathways involved in membrane repair.
  • Microscopic examination of localized remodeling steps during repair.

Main Results:

  • Eukaryotic cells can rapidly repair compromised plasma membranes.
  • Plasma membrane repair restores internal cellular homeostasis and prevents cell death.
  • The repair process involves sequential, localized remodeling, mirroring tissue healing.

Conclusions:

  • Plasma membrane repair is a fundamental cellular survival mechanism.
  • The study of cell membrane repair offers insights comparable to tissue healing research.
  • Further investigation into this process is warranted given its significance.