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Related Experiment Videos

Inhibition of oxygen-induced retinopathy in RTP801-deficient mice.

Anat Brafman1, Igor Mett, Millicent Shafir

  • 1Quark Biotech, Inc., Fremont, California, USA.

Investigative Ophthalmology & Visual Science
|September 29, 2004
PubMed
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RTP801 deficiency significantly reduces retinopathy of prematurity (ROP) in mice. This suggests RTP801 plays a key role in the development of ROP, a major cause of blindness.

Area of Science:

  • Ophthalmology
  • Molecular Biology
  • Genetics

Background:

  • Ischemic proliferative retinopathy is a leading cause of blindness globally, characterized by retinal neovascularization and apoptosis.
  • RTP801 is a novel hypoxia-inducible gene upregulated in ischemic neuronal cells.
  • RTP801 overexpression promotes apoptosis and increases sensitivity to ischemic injury.

Purpose of the Study:

  • To investigate the role of RTP801 in the pathogenesis of retinopathy.
  • To examine the effects of RTP801 deficiency in a mouse model of retinopathy of prematurity (ROP).

Main Methods:

  • Utilized wild-type and RTP801-knockout mice in a retinopathy of prematurity (ROP) model.
  • Analyzed retinal neovascularization, VEGF expression, and apoptosis at specific postnatal days.

Related Experiment Videos

  • Employed fluorescein angiography for retinal examination.

    • Main Results:

    • RTP801 expression was induced in wild-type retinas under hypoxia.
    • RTP801-knockout mice showed significantly reduced retinal neovascularization in the ROP model.
    • A significant decrease in apoptotic cells was observed in the inner nuclear layer of knockout mice.

    Conclusions:

    • RTP801 plays a critical role in the development of retinopathy.
    • Absence of RTP801 significantly attenuates retinopathy progression in a mouse model.
    • Targeting RTP801 may offer a therapeutic strategy for retinopathy.