How Retinal Secretions Affect Retinal Pigment Epithelium Function
Author Information
Author(s): Sun Ru, Peng Shaomin, Chen Xiang, Zhang Heping, Rizzolo Lawrence J.
Primary Institution: Yale University
Hypothesis
E14 retinal conditioned medium maintains the differentiated state of E14 RPE that was placed in primary cell culture, and advances the differentiation of cultured E7 RPE.
Conclusion
Retinal secretions promote differentiation of immature RPE and help maintain the properties of more mature RPE.
Supporting Evidence
- More than 86% of the genes expressed in vivo were expressed in basal culture conditions.
- E14 retinal conditioned medium affected 15% of the transcriptome in E7 cultures.
- Immunoblotting suggested additional mechanisms whereby retinal secretions regulated protein expression and localization.
Takeaway
This study shows that substances from the retina can help immature retinal cells grow up better and keep mature cells healthy.
Methodology
Chick RPE from embryonic day 7 (E7) and E14 were cultured on filters, and RNA was isolated to probe the chick genome on microarrays.
Limitations
The study may not fully replicate in vivo conditions due to the artificial culture environment.
Participant Demographics
Chick embryos (White Leghorn) at embryonic days 7 and 14.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
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