Dataset Information

Quantification of Peptide 2 (RLLWENGNL) concentration in the mouse plasma

ABSTRACT: Diabetes mellitus (DM) causes the change in the components of the plasma, which may induce tissue and organ injuries, including the heart and kidney. In the diabetic model db/db mice, intravenous injection of purified dipeptidyl peptidase III (DPPIII) attenuated the heart and kidney damages provoked by DM without alteration in blood glucose level. This led us to hypothesize that there might be peptide(s) that are involved in the progression of the DM-mediated damages and are cleaved by DPPIII. To explore the peptides, the whole peptidomics analysis (shotgun peptidomics) was conducted using tandem mass spectrometry, in which peptides derived from the plasma of PBS-infused C57BL/6 mice, PBS-infused db/db mice, and DPPIII-treated db/db mice were compared. The raw mass spectrometry data were deposited to the ProteomeXchange with the dataset identifier PXD025440. Together with the mass spectrometry analysis and other experiments, we identified a peptide named Peptide 2 (AA sequence: RLLWENGNL) as a substrate of DPPIII. Peptide 2 is a part of C3f (53% identical), and C3f can act as an anaphylatoxin like C3a. To quantify the amount in plasma derived from the plasma of PBS-infused C57BL/6 mice, PBS-infused db/db mice, and DPPIII-treated db/db mice, selected reaction monitoring (SRM) assay was performed. All of the chromatograms and quantified data obtained by SRM from the three mouse groups were shown in the Analyst formated and PDF files.

INSTRUMENT(S): Q TRAP

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Blood Plasma

SUBMITTER: Akio Shimizu

LAB HEAD: Hisakazu Ogita

PROVIDER: PXD025469 | Pride | 2022-02-17

REPOSITORIES: Pride

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Publications

Cardio- and reno-protective effects of dipeptidyl peptidase III in diabetic mice.

Komeno Masahiro M Pang Xiaoling X Shimizu Akio A Molla Md Rasel MR Yasuda-Yamahara Mako M Kume Shinji S Rahman Nor Idayu A NIA Soh Joanne Ern Chi JEC Nguyen Le Kim Chi LKC Ahmat Amin Mohammad Khusni B MKB Kokami Nao N Sato Akira A Asano Yoshihiro Y Maegawa Hiroshi H Ogita Hisakazu H

The Journal of biological chemistry 20210101

Diabetes mellitus (DM) causes injury to tissues and organs, including to the heart and kidney, resulting in increased morbidity and mortality. Thus, novel potential therapeutics are continuously required to minimize DM-related organ damage. We have previously shown that dipeptidyl peptidase III (DPPIII) has beneficial roles in a hypertensive mouse model, but it is unknown whether DPPIII has any effects on DM. In this study, we found that intravenous administration of recombinant DPPIII in diabet ...[more]

PMID: 33971198

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Dataset Information

Quantification of Peptide 2 (RLLWENGNL) concentration in the mouse plasma

Publications

Cardio- and reno-protective effects of dipeptidyl peptidase III in diabetic mice.

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