Catalog # |
Size |
Price |
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027-52 | 200ug | $226 |
Glu-Lys-Lys-Glu-Gly-His-Phe-Ser-Ala-Leu-Pro-Ser-Leu-Pro-Val-Gly-Ser-His-Ala-Lys-Val-Ser-Ser-Pro-Gln-Pro-Arg
|
2871 | |
|
Up to 6 months in lyophilized form at 0-5ºC. For best results, rehydrate just before use. Aliquot before freezing to avoid repeated freeze-thaw cycles. |
| Each vial contains 200 μg of NET peptide. |
Abstract: We recently established a new plasma peptidomic technique and comprehensively identified a large number of low-molecular weight and low-abundance native peptides using a single drop of human plasma. To discover a novel polypeptide that potently modulates the cardiovascular system, we performed a bioinformatics analysis of the large-scale identification results, sequentially synthesized the selected peptide sequences, tested their biological activities, and identified a 30-amino-acid proatherogenic peptide, GIP_HUMAN[22-51], as a potent proatherosclerotic peptide hormone. GIP_HUMAN[22-51] has a common precursor with the glucose-dependent insulinotropic polypeptide (GIP) and is located immediately N-terminal to GIP. Chronic infusion of GIP_HUMAN[22-51] into ApoE-/- mice accelerated the development of aortic atherosclerotic lesions, which were inhibited by co-infusions with an anti-GIP_HUMAN[22-51] antibody. GIP_HUMAN[22-51] increased the serum concentrations of many inflammatory and proatherogenic proteins, whereas neutralising antibodies reduced their levels. GIP_HUMAN[22-51] induced IκB-α degradation and nuclear translocation of NF-κB in human vascular endothelial cells and macrophages. Immunoreactive GIP_HUMAN[22-51] was detected in human tissues but there was no colocalization with the GIP. The plasma GIP_HUMAN[22-51] concentration in healthy humans determined using a stable-isotope tagged peptide was approximately 0.6 nM. This study discovered a novel endogenous proatherogenic peptide by using a human plasma native peptidomic resource.
Masaki T, Kodera Y, Terasaki M, Fujimoto K, Hirano T, Shichiri M. GIP_HUMAN[22–51] is a new proatherogenic peptide identified by native plasma peptidomics. Sci Rep. 2021;11(1):14470.
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