Cutamesine – (165377-43-5)

Cutamesine, also known as SA4503, is a synthetic sigma receptor agonist with high selectivity for the sigma-1 receptor (σ1R), a chaperone protein primarily located in the endoplasmic reticulum of cells within the central nervous system. Cutamesine’s interaction with the sigma-1 receptor is crucial for modulating calcium release and apoptosis, and it influences various physiological processes, including the activation of dopamine-releasing neurons and the suppression of the MAPK/ERK pathway.

In the realm of memory and cognitive function, cutamesine demonstrates anti-amnesic properties, potentially mitigating amnesia induced by REM sleep deprivation and scopolamine. It enhances memory function by increasing the number of active dopaminergic neurons in the frontal cortex and reducing stress-related cell death through the suppression of the MAPK pathway. Additionally, cutamesine’s role in depression is being investigated, as sigma-1 receptor agonists like SA4503 exhibit antidepressant-like effects in non-human trials, linked to increased dopamine levels in the frontal cortex.

Cutamesine also shows promise in cardiac health, as it mitigates cardiac hypertrophy by restoring ATP production and mitochondrial size in cardiomyocytes affected by angiotensin II-induced hypertrophy. Furthermore, it may benefit auditory health by positively correlating with the presence of hippocampal brain-derived neurotrophic factor (BDNF), which is associated with the preservation of auditory nerves, although it does not prevent age-related hearing loss.

In the context of retinal health, cutamesine has been shown to protect against light-induced photoreceptor cell death. Studies indicate that it reduces cell death rates, suppresses the decrease in sigma-1 receptor expression, and mitigates mitochondrial damage and caspase 3/7 activity in vitro. In vivo, it prevents light-induced retinal dysfunction and thinning of the outer nuclear layer in mice, suggesting its potential as a therapeutic agent for retinal diseases mediated by photoreceptor degeneration.

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Sources:

https://en.wikipedia.org/wiki/Cutamesine
https://pubchem.ncbi.nlm.nih.gov/compound/9907323
https://www.medchemexpress.com/sa4503.html
https://www.medkoo.com/products/44412
https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/cutamesine
https://pubmed.ncbi.nlm.nih.gov/25616094/