Related Experiment Video
Updated: Aug 8, 2026
11:22
Vibratome Sectioning Mouse Retina to Prepare Photoreceptor Cultures
Published on: December 22, 2014
Rod-cone interactions: developmental and clinical significance
S Mohand-Said1, D Hicks, T Léveillard
1Laboratoire de Physiopathologie Cellulaire et Moléculaire de la Rétine, EMI 99-8 INSERM Université Louis Pasteur, Clinique Médicale A, Hôpitaux Universitaires de Strasbourg, 1 Place de l'Hôpital 67091 Cedex, Strasbourg, France.
Progress in Retinal and Eye Research
|June 8, 2001
Summary
Rod photoreceptor loss triggers cone cell death in retinal degenerations. Understanding these interactions may lead to new treatments for blindness by preserving cone photoreceptors.
Area of Science:
- Ophthalmology
- Neuroscience
- Cell Biology
Background:
- Retinal degenerations are a group of blinding conditions with complex physiopathology.
- Current therapeutic strategies include gene therapy, pharmacology, and retinal transplantation.
- Secondary cone photoreceptor death following rod degeneration is a critical issue.
Purpose of the Study:
- To investigate the causal link between rod degeneration and secondary cone death.
- To explore the interactions between rod and cone photoreceptors in retinal degeneration.
- To identify potential therapeutic targets for preserving cone photoreceptor function.
Main Methods:
- In vivo and in vitro studies were conducted to examine photoreceptor interactions.
- Research focused on the paracrine signaling between rod and cone photoreceptors.
- Investigated the necessity of rod photoreceptors for cone survival.
Main Results:
- Evidence suggests paracrine interactions between rod and cone photoreceptors.
- Rod photoreceptors are essential for the continued survival of cone photoreceptors.
- Rod loss directly contributes to secondary cone death.
Conclusions:
- Rod-cone interactions play a crucial role in retinal degeneration.
- Rod replacement therapy and neuroprotection are promising approaches for treating blinding conditions.
- Further research into mediating factors could reveal novel therapeutic strategies for preserving vision.
Related Concept Videos
01:32The Retina
The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.
03:14Notch Signaling Pathway
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
01:30Assembly of Signaling Complexes
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
01:19Interactions Between Signaling Pathways
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
01:24Small GTPases - Ras and Rho
Ras and Rho are small monomeric GTPases that act downstream of receptor tyrosine kinase (RTK) and regulate various cellular processes. These GTPases switch between active and inactive states by binding to guanine nucleotides.
Three regulatory proteins control their activity:
Three regulatory proteins control their activity:
01:19Cadherins in Tissue Organization
The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
Cell Sorting During Development
Cell sorting plays an...