DSIP

Specification

Sleep physiology and pathways

DSIP is a synthetic nonapeptide studied in models of sleep and waking rhythm. The name records its historical place beside delta EEG activity and slow wave sleep. Preclinical and cell-based work uses the peptide to characterise neuroendocrine and central pathways that accompany the shift from waking into rest. Assay designs often centre on GABAergic and monoaminergic systems. DSIP is a defined ligand, so responses in hypothalamic and brainstem models can be read on the same scale. Labs buy DSIP as the nonapeptide at 10 mg per vial.

Reconstitution and handling

In the lab the lyophilisate is reconstituted with a suitable sterile solvent. The solvent is added slowly along the vessel wall, and the preparation is mixed gently until the powder has fully dissolved. The solution is used promptly, because peptides in solution respond more readily to their surroundings. Until then the reagent is kept away from direct light. Volume and final concentration are set by the lab in its own protocol.

In vitro research

In vitro, DSIP supports work on circadian regulation, stress axes and sleep markers in neuronal and neuroendocrine cell lines. EEG-related readouts and transcriptome assays use the peptide as a reference substance with a fixed sequence. Binding and signalling studies at the relevant receptor targets give concentration-response curves from reproducible dilution series. Nine amino acids make a compact nonapeptide that moves cleanly into defined solutions and fits parallel runs in multiwell plates.

Quality and analytics

Each batch of DSIP is checked by HPLC, and the content is ≥99 %. An identity check confirms the nonapeptide sequence. Results are recorded per batch. That analytical profile is a steady basis for comparing measurement series and for repeating in vitro experiments in sleep and neuroendocrine research. The primary publication on amino acid analysis, sequence and synthesis of DSIP anchors the molecular classification of the substance in the specialist literature.

Available amounts per vial: 5 mg, 10 mg. Box of 10 vials.