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Updated: May 26, 2025
Induction and Validation of Cellular Senescence in Primary Human Cells
Published on: June 20, 2018
Cellular senescence and glaucoma
Liang Guo1, Na Wang2, Jing Chen1
1The Affiliated Eye Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China.
Abstract:
Cellular senescence, a characteristic feature of the aging process, is induced by diverse stressors. In recent years, glaucoma has emerged as a blinding ocular disease intricately linked to cellular senescence. The principal pathways implicated are oxidative stress, mitochondrial dysfunction, DNA damage, autophagy impairment, and the secretion of various senescence- associated secretory phenotype factors. Research on glaucoma-associated cellular senescence predominantly centers around the increased resistance of the aqueous humor outflow pathway, which is attributed to the senescence of the trabecular meshwork and Schlemm's canal. Additionally, it focuses on the mechanisms underlying retinal ganglion cell senescence in glaucoma and the corresponding intervention measures. Given that cell senescence represents an irreversible phase preceding cell death, an in-depth investigation into its mechanisms in the pathogenesis and progression of glaucoma, particularly by specifically blocking the signal transduction of cell senescence, holds the potential to decrease the outflow resistance of aqueous humor. This, in turn, could provide a novel avenue for safeguarding the optic nerve in glaucoma.
Insights
Cellular senescence contributes to glaucoma by affecting eye structures and retinal cells. Targeting senescence pathways may offer new treatments for this blinding disease.
Area of Science:
- Ophthalmology
- Cell Biology
- Aging Research
Background:
- Cellular senescence is a key aging process triggered by stressors.
- Glaucoma, a leading cause of blindness, is increasingly linked to cellular senescence.
- Key pathways involved include oxidative stress, mitochondrial dysfunction, and DNA damage.
Purpose of the Study:
- To investigate the role of cellular senescence in glaucoma pathogenesis and progression.
- To explore the mechanisms of senescence in the trabecular meshwork, Schlemm's canal, and retinal ganglion cells.
- To identify potential therapeutic strategies by targeting senescence pathways.
Main Methods:
- Review of literature on cellular senescence and glaucoma.
- Analysis of pathways implicated in ocular senescence, including oxidative stress and autophagy.
- Examination of senescence in the aqueous humor outflow pathway and retinal ganglion cells.
Main Results:
- Senescence of trabecular meshwork and Schlemm's canal cells increases aqueous humor outflow resistance.
- Retinal ganglion cell senescence contributes to vision loss in glaucoma.
- Senescence-associated secretory phenotype factors play a role in disease progression.
Conclusions:
- Cellular senescence is a critical factor in glaucoma development and progression.
- Blocking senescence signal transduction may reduce outflow resistance and protect the optic nerve.
- Targeting cellular senescence presents a novel therapeutic approach for glaucoma treatment.
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