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Related Experiment Videos

UV light affects cell membrane and cytoplasmic targets

T Schwarz1

  • 1Department of Dermatology, University Münster, Germany. schwtho@uni-muenster.de

Journal of Photochemistry and Photobiology. B, Biology
|October 3, 1998
PubMed
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Ultraviolet light (UV) affects more than just DNA, impacting cellular structures like membranes and cytoplasm. New research shows UV directly activates surface receptors, influencing cytokine signaling and apoptosis.

Area of Science:

  • Molecular biology
  • Cellular biology
  • Photobiology

Background:

  • Traditionally, DNA was considered the primary cellular target for UVB and UVC radiation.
  • Emerging evidence suggests ultraviolet light (UV) also impacts cytoplasmic and membrane structures.
  • UV can directly affect cytoplasmic transcription factors, membrane-associated kinases, and membrane receptors.

Purpose of the Study:

  • To identify additional cellular targets of UV radiation.
  • To elucidate the mechanisms by which these targets transduce UV signals.
  • To enhance the understanding of the biological effects of UV.

Main Methods:

  • Review of recent experimental observations.
  • Analysis of UV-induced alterations in cellular signaling pathways.

Related Experiment Videos

  • Investigation of apoptosis induction via surface receptor activation.

    • Main Results:

    • UV radiation directly affects cytoplasmic and membrane cellular components.
    • UV can directly activate apoptosis-related surface receptors.
    • UV interference with cytokine signaling and induction of apoptosis were observed.

    Conclusions:

    • Cellular targets for UV extend beyond DNA to include cytoplasmic and membrane structures.
    • Direct activation of surface receptors by UV is a significant mechanism for signal transduction.
    • UV-induced apoptosis and altered cytokine signaling highlight novel biological effects of UV radiation.