Effects of Rho Kinase Inhibitors on Trabecular Meshwork Cells
Author Information
Author(s): Ramachandran C., Patil R.V., Combrink K., Sharif N.A., Srinivas S.P.
Primary Institution: School of Optometry, Indiana University
Hypothesis
The contraction of trabecular meshwork cells regulates aqueous humor outflow facility through actomyosin contraction.
Conclusion
ROCK inhibitors Y-39983 and Y-27632 reduce MYPT1 phosphorylation, leading to decreased actomyosin contraction and altered cell-matrix adhesion.
Supporting Evidence
- Y-39983 was found to be more potent than Y-27632 in inhibiting MYPT1 phosphorylation.
- Both ROCK inhibitors led to a significant decrease in actomyosin contraction.
- Dephosphorylation of MYPT1 at Thr853 was predominantly affected by ROCK inhibitors.
- Cell-matrix adhesion was weakened following treatment with ROCK inhibitors.
- Electrical cell-substrate resistance decreased significantly with ROCK inhibitor treatment.
Takeaway
This study shows that certain drugs can help eye cells relax, which might help lower eye pressure.
Methodology
The study used western blot analysis, collagen gel contraction assays, and electric cell-substrate impedance sensing to assess the effects of ROCK inhibitors on trabecular meshwork cells.
Participant Demographics
Immortalized human trabecular meshwork cells (GTM3) derived from a glaucomatous donor.
Statistical Information
Statistical Significance
p<0.05
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