PDGF-BB protects mitochondria from rotenone in T98G cells

Area of Science:

• Neuroscience
• Cell Biology
• Toxicology

Background:

• Rotenone is a well-studied neurotoxin inducing oxidative stress and affecting cellular energy production.
• Neurotrophic factors like BDNF and GDNF are known for neuronal protection, but astrocytic protective roles are less explored.
• Astrocytes play crucial roles in maintaining the central nervous system environment and protecting neurons.

Purpose of the Study:

• To investigate the neuroprotective potential of platelet-derived growth factor-BB (PDGF-BB) against rotenone-induced toxicity in an astrocyte model.
• To evaluate the impact of PDGF-BB on cell viability, morphology, mitochondrial function, and oxidative stress in T98G human glioblastoma cells exposed to rotenone.

Main Methods:

• T98G human glioblastoma cells were pretreated with PDGF-BB.
• Cells were subsequently exposed to rotenone to induce toxicity.
• Cell viability, nuclear morphology, mitochondrial membrane potential, reactive oxygen species (ROS) production, and cellular morphology were assessed.

Main Results:

• PDGF-BB pretreatment significantly increased cell viability and preserved nuclear morphology following rotenone exposure.
• PDGF-BB maintained mitochondrial membrane potential and reduced ROS production to near-control levels.
• PDGF-BB mitigated rotenone-induced cellular morphological changes.

Conclusions:

• PDGF-BB exhibits significant neuroprotective effects against rotenone-induced oxidative damage in astrocytes.
• PDGF-BB protects mitochondrial function and cellular integrity in astrocytes under toxic conditions.
• PDGF-BB represents a potential therapeutic strategy for mitigating astrocyte damage in neurodegenerative conditions involving oxidative stress.