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Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis
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Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis

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Receptor interacting protein 3-induced RGC-5 cell necroptosis following oxygen glucose deprivation

Wei Ding1, Lei Shang2, Ju-Fang Huang3

  • 1Department of Anatomy and Neurobiology, Morphological Sciences Building, School of Basic Medical Sciences, Central South University, 172 Tongzi Po Road, Changsha, 410013, Hunan, China. ldd2007200@163.com.

BMC Neuroscience
|August 5, 2015
PubMed
Abstract

Insights

Receptor-interacting protein 3 (RIP3) mediates retinal ganglion cell necroptosis following oxygen-glucose deprivation (OGD). Knocking down RIP3 reduces OGD-induced cell death and oxidative stress, suggesting RIP3 as a therapeutic target.

Area of Science:

  • Cellular biology
  • Neuroscience
  • Pathology

Background:

  • Necroptosis, a regulated cell death, is implicated in various diseases.
  • Receptor-interacting protein 3 (RIP3) is a key mediator in necroptosis pathways.
  • RIP3 is upregulated in retinal ganglion cells (RGCs) following acute high intraocular pressure.

Purpose of the Study:

  • To investigate the role of RIP3 in oxygen-glucose deprivation (OGD)-induced necroptosis of RGC-5 cells.
  • To determine if RIP3 upregulation contributes to RGC-5 cell death under OGD conditions.

Main Methods:

  • RGC-5 cells were subjected to 8-hour OGD.
  • Necrosis was assessed using propidium iodide (PI) staining and flow cytometry.
  • RIP3 expression was analyzed via western blot.
  • The impact of RIP3 knockdown on OGD-induced necroptosis and oxidative stress (MDA levels) was evaluated.

Main Results:

  • OGD induced RGC-5 cell necrosis, confirmed by PI staining and necrostatin-1 treatment.
  • RIP3 expression was upregulated following OGD.
  • RIP3 knockdown significantly reduced OGD-induced RGC-5 necroptosis.
  • MDA levels, indicating oxidative stress, were lower in RIP3-knockdown cells post-OGD.

Conclusions:

  • RGC-5 cell necroptosis induced by OGD is mediated by RIP3.
  • RIP3 contributes to OGD-induced necroptosis through increased oxidative stress.

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