Rapamycin is a macrolide compound obtained from Streptomyces hygroscopicus that acts by selectively blocking the transcriptional activation of cytokines thereby inhibiting cytokine production.
CAT No: Z10-101-156
CAS No:53123-88-9
Synonyms/Alias:Sirolimus; Rapamune; 53123-88-9; AY 22 989; I 2190A
Rapamycin is a macrolide compound originally isolated from Streptomyces hygroscopicus, recognized for its potent inhibitory effect on the mechanistic target of rapamycin (mTOR) pathway. As a highly specific mTOR inhibitor, rapamycin has become an indispensable tool in molecular and cellular biology for dissecting signaling pathways involved in cell growth, proliferation, autophagy, and metabolism. Its unique biochemical profile and specificity make it a critical reagent for researchers investigating fundamental cellular processes, signal transduction mechanisms, and the regulation of metabolic pathways. The compound's versatility and well-characterized mode of action have established it as a standard in studies requiring precise modulation of mTOR activity, supporting a broad range of experimental approaches in both basic and applied biosciences.
Signal transduction research: Rapamycin is extensively employed to interrogate the mTOR signaling cascade, a central regulator of cell growth and metabolism. By selectively inhibiting mTOR complex 1 (mTORC1), the compound enables researchers to delineate downstream effects on protein synthesis, ribosomal biogenesis, and nutrient sensing. Its use facilitates the dissection of complex cellular responses to growth factors, energy status, and stress, providing mechanistic insights into how cells coordinate environmental signals with metabolic and proliferative outputs.
Autophagy studies: The ability of rapamycin to induce autophagy through mTORC1 inhibition has made it a gold standard for probing autophagic flux in diverse model systems. Researchers utilize it to trigger autophagosome formation, monitor the degradation of cellular components, and investigate the interplay between autophagy and cellular homeostasis. Such studies are essential for understanding the maintenance of proteostasis, organelle turnover, and the cellular response to nutrient deprivation, oxidative stress, or toxic insults.
Metabolic pathway analysis: Rapamycin is a key reagent in metabolic research, where it is used to explore the regulation of glucose and lipid metabolism by mTOR signaling. Its application allows for the elucidation of how mTORC1 influences insulin signaling, mitochondrial function, and metabolic reprogramming under various physiological and experimental conditions. By modulating mTOR activity, investigators can assess the impact on cellular energy balance, biosynthetic pathways, and metabolic adaptation.
Cell cycle and proliferation assays: The compound's inhibitory effect on mTORC1 provides a means to study cell cycle progression and proliferation in a controlled manner. Researchers employ rapamycin to arrest cells at specific phases, analyze checkpoint controls, and investigate the molecular determinants of growth arrest versus proliferation. Its use is critical in experiments designed to parse out the contributions of mTOR signaling to cell cycle regulation, differentiation, and tissue development.
Drug discovery and screening: Rapamycin serves as a reference compound in high-throughput screening platforms aimed at identifying novel mTOR modulators or compounds with similar bioactivity profiles. Its well-defined mechanism of action and robust biological effects make it an ideal positive control for assay validation, benchmarking, and comparative studies. This application supports the development of new chemical entities targeting the mTOR pathway, facilitating structure-activity relationship studies and the optimization of potential research tools.
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