A gut-secretedpeptidesuppresses arousability from sleep The CCHa1 peptide, also known as CCHamide-1, is a signaling molecule with a significant role in regulating sleep and arousal. Primarily produced by enteroendocrine cells in the gut, this neuropeptide acts as a crucial link between digestive processes and the central nervous system. Research indicates that CCHa1 functions by suppressing arousability from sleep, influencing how readily an organism wakes upEnergetic Demands Regulate Sleep-Wake Rhythm Circuit .... This peptide signals to specific dopamine neurons in the brain, modulating their activity and thereby affecting behavioral responsesContributes to regulation of sleep latency (the time required to fall asleep), amount of sleep and depth of sleep (arousability) (PubMed:30246807, PubMed: .... Understanding the mechanisms and implications of CCHa1 peptide is vital for comprehending the intricate interplay between gut physiology and sleep-wake states.
CCHa1 is synthesized and secreted by enteroendocrine cells, specialized cells found within the lining of the gastrointestinal tract. Its presence has been detected in extracts from both adult and larval midguts, underscoring its importance across different life stagesGene ResultCCHa1-R CCHamide-1 receptor [ (fruit fly)]. Beyond the gut, CCHa1 also plays a role in intercellular communication within neuronal networks. Studies have identified it in anterior dorsal neurons, suggesting a broader involvement in neural signaling beyond its gut-brain axis function. The expression of CCHa1 is also associated with the circadian clock network, potentially influencing sleep latency—the time it takes to fall asleep.
The primary known function of the CCHa1 peptide is its ability to inhibit sleep arousal.作者：J TAN·2022—The prepropeptide encoded by.CCHa1 cDNA contains 182 amino acid residues (CG14358) with a signal peptide at the N- terminus. The deduced active peptide ... This effect is mediated through its interaction with specific neuronal populations in the brain.A gut-secreted peptide suppresses arousability from sleep CCHa1 signals to a small group of dopaminergic neurons, altering their firing patterns. Dopamine is a neurotransmitter known to be involved in various functions, including arousal, motivation, and rewardGene ResultCCHa1-R CCHamide-1 receptor [ (fruit fly)]. By modulating the activity of these dopaminergic neurons, CCHa1 effectively gates an organism's behavioral responsiveness to stimuli, making it less prone to wakingFlyBase Gene Report: Dmel\CCHa1. This mechanism is particularly relevant in the context of a high-protein diet, where increased protein intake appears to stimulate the release of CCHa1 from gut cells, leading to a reduction in arousability作者：J Tan·2024·被引用次数：6—This research aimed to quantify and localize the expression of CCHamides along with their receptors and gain insight on their physiological function in the ....
The CCHa1 peptide is a prime example of a brain-gut peptide, highlighting the bidirectional communication between the digestive system and the central nervous system. Its production in the gut and subsequent signaling to the brain demonstrates how physiological states in one system can directly impact functions in another. The enteroendocrine cells that produce CCHa1 respond to various cues, including nutrient availability, with a high-protein diet being a notable trigger. This peptide then travels or signals to the brain, influencing sleep regulation. This intricate connection suggests that dietary components can exert profound effects on sleep architecture and arousal thresholds through hormonal pathways originating in the gut.
CCHa1 is part of a broader family of CCHamide peptides, including CCHa2, which also play roles in neuroendocrine signaling. While CCHa1 is associated with suppressing arousal, CCHa2 has been identified as an orexigenic peptide in *Drosophila*, suggesting appetite-stimulating propertiesUntangling the Mystery of Sleep to Reveal an Unexpected .... The receptor for CCHa1, known as CCHa1-R, is a G protein-coupled receptor involved in neuropeptide signaling pathwaysCCHa1 peptide | 信号肽. Further research is ongoing to fully characterize the physiological functions of CCHa1 and its receptor, particularly in understanding the precise neural circuits involved and the range of behaviors influenced by this gut-derived neuropeptide. Investigating CCHa1's role in other physiological processes and across different species continues to be an active area of scientific inquiryDocking analysis of CCHa1 mature peptide and its ....
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