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Zebrafish Guanylate Cyclase Type 3 Signaling in Cone Photoreceptors
- Source :
- PLoS ONE, PLoS ONE, Vol 8, Iss 8, p e69656 (2013)
- Publication Year :
- 2013
- Publisher :
- Public Library of Science (PLoS), 2013.
-
Abstract
- The zebrafish guanylate cyclase type 3 (zGC3) is specifically expressed in cone cells. A specifc antibody directed against zGC3 revealed expression at the protein level at 3.5 dpf in outer and inner retinal layers, which increased in intensity between 3.5 and 7 dpf. This expression pattern differed from sections of the adult retina showing strong immunostaining in outer segments of double cones and short single cones, less intense immunoreactivity in long single cones, but no staining in the inner retina. Although transcription and protein expression levels of zGC3 are similar to that of the cyclase regulator guanylate cyclase-activating protein 3 (zGCAP3), we surprisingly found that zGCAP3 is present in a 28-fold molar excess over zGC3 in zebrafish retinae. Further, zGCAP3 was an efficient regulator of guanylate cyclases activity in native zebrafish retinal membrane preparations. Therefore, we investigated the physiological function of zGCAP3 by two different behavioral assays. Using the morpholino antisense technique, we knocked down expression of zGCAP3 and recorded the optokinetic and optomotor responses of morphants, control morphants, and wild type fish at 5-6 dpf. No significant differences in behavioral responses among wild type, morphants and control morphants were found, indicating that a loss of zGCAP3 has no consequences in primary visual processing in the larval retina despite its prominent expression pattern. Its physiological function is therefore compensated by other zGCAP isoforms.
- Subjects :
- Anatomy and Physiology
genetic structures
Morpholino
Visual System
lcsh:Medicine
Biochemistry
chemistry.chemical_compound
Molecular Cell Biology
Signaling in Cellular Processes
Protein Isoforms
lcsh:Science
Zebrafish
Multidisciplinary
biology
Animal Models
Signaling Cascades
Sensory Systems
Enzymes
medicine.anatomical_structure
Retinal Cone Photoreceptor Cells
Research Article
Signal Transduction
animal structures
Cyclase
Enzyme Regulation
Model Organisms
Ocular System
medicine
Animals
Calcium Signaling
Biology
Retina
lcsh:R
Wild type
Proteins
Retinal
Zebrafish Proteins
biology.organism_classification
Molecular biology
Guanylate Cyclase-Activating Proteins
Transmembrane Proteins
chemistry
Guanylate Cyclase
Calcium Signaling Cascade
lcsh:Q
sense organs
Immunostaining
Neuroscience
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....82c5fd45fe0bd6d141c15b498df7aaaf