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Updated: Aug 19, 2026
In Ovo Electroporation in Embryonic Chick Retina
Published on: February 5, 2012
BMPR-II expression and OP-1 effects in developing chicken retinal explants
N G Carri1, H Bengtsson, M F Charette
1Department of Neuroscience, Uppsala University, Sweden.
Abstract:
Low-stringency PCR was used to isolate the chicken homologue of the human bone morphogenetic protein receptor type II (BMPR-II). In situ hybridization localized mRNA expression for this serine/threonine kinase receptor. It was weakly expressed in the vitreal side of the neural retina at E6. In the E7 chicken, fairly strong labelling was found in cells of the internal part of the neural retina. At E9, strong labelling was found in the region of the retinal ganglion cells. Explants of E6 retina exposed to osteogenic protein-1 (OP-1/BMP-7), exhibited dense retinal fibre outgrowth. This suggests that BMPR-II may form a signalling receptor complex important for retinal development. OP-1 and related ligands may serve functions supplementary to those of neurotrophins.
Insights
Researchers identified the chicken bone morphogenetic protein receptor type II (BMPR-II) and found its expression in the developing retina. This receptor may play a key role in retinal development and function.
Area of Science:
- Molecular Biology
- Developmental Biology
- Ophthalmology
Background:
- Bone morphogenetic protein receptor type II (BMPR-II) is crucial in various biological processes.
- Understanding BMPR-II's role in ocular development is essential for regenerative medicine.
Purpose of the Study:
- To isolate and characterize the chicken homologue of human BMPR-II.
- To investigate the expression patterns of BMPR-II during chicken retinal development.
- To explore the functional role of BMPR-II in retinal development.
Main Methods:
- Low-stringency PCR was employed to isolate the chicken BMPR-II gene.
- In situ hybridization was utilized to determine mRNA expression localization.
- Retinal explant cultures were treated with osteogenic protein-1 (OP-1/BMP-7) to assess functional effects.
Main Results:
- Chicken BMPR-II mRNA was detected in the developing retina, with expression increasing from E6 to E9.
- Strongest labeling was observed in retinal ganglion cells at embryonic day 9 (E9).
- Exposure to OP-1/BMP-7 induced significant retinal fiber outgrowth in explants.
Conclusions:
- BMPR-II is expressed in the developing chicken retina, particularly in regions associated with retinal ganglion cells.
- BMPR-II likely forms a critical signaling complex involved in retinal development.
- OP-1 and related ligands may have supplementary roles to neurotrophins in retinal development.
