Sleeppeptide 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 up. This peptide signals to specific dopamine neurons in the brain, modulating their activity and thereby affecting behavioral responses.作者：C Simmons·2025·被引用次数：2—CCHa1 interacts with the anterior dorsal neuron and the pigment-dispersing factors in the brainto regulate sleep cycles [36] and stabilize circadian behavioral ... 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 stages. Beyond the gut, CCHa1 also plays a role in intercellular communication within neuronal networks作者：AR Poe·2024·被引用次数：4—OurCCHa1 peptidedata suggest that Dh44 neurons may undergo changes in CCHa1-R expression or subcellular localization between the L2 and L3 .... Studies have identified it in anterior dorsal neurons, suggesting a broader involvement in neural signaling beyond its gut-brain axis functionAN 115: Determination of Trifluoroacetic Acid (TFA) in Peptides. 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 arousalNeuropeptide CCHamide-1 (abbreviated as CCHa1) is a recently discovered peptide that is present in many arthropods and is the ligand of the CCHa1R, a member of .... This effect is mediated through its interaction with specific neuronal populations in the brain. CCHa1 signals to a small group of dopaminergic neurons, altering their firing patterns.Docking analysis of CCHa1 mature peptide and its ... Dopamine is a neurotransmitter known to be involved in various functions, including arousal, motivation, and reward.A gut-secreted peptide controls arousability through ... By modulating the activity of these dopaminergic neurons, CCHa1 effectively gates an organism's behavioral responsiveness to stimuli, making it less prone to waking. 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.
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作者：AR Poe·2024·被引用次数：4—OurCCHa1 peptidedata suggest that Dh44 neurons may undergo changes in CCHa1-R expression or subcellular localization between the L2 and L3 .... This peptide then travels or signals to the brain, influencing sleep regulationCCHamide-2 Is an Orexigenic Brain-Gut Peptide in Drosophila. This intricate connection suggests that dietary components can exert profound effects on sleep architecture and arousal thresholds through hormonal pathways originating in the gut作者：AR Poe·2024·被引用次数：4—OurCCHa1 peptidedata suggest that Dh44 neurons may undergo changes in CCHa1-R expression or subcellular localization between the L2 and L3 ....
CCHa1 is part of a broader family of CCHamide peptides, including CCHa2, which also play roles in neuroendocrine signalingAdipocyte-Derived CCHamide-1, Eiger, Growth-Blocking .... While CCHa1 is associated with suppressing arousal, CCHa2 has been identified as an orexigenic peptide in *Drosophila*, suggesting appetite-stimulating properties. The receptor for CCHa1, known as CCHa1-R, is a G protein-coupled receptor involved in neuropeptide signaling pathways. 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 inquiry.FlyBase Gene Report: Dmel\CCHa1-R
Join the newsletter to receive news, updates, new products and freebies in your inbox.