Biomaterial Database

Identification and characterisation of peptides from a boarfish (Capros aper) protein hydrolysate displaying in vitro dipeptidyl peptidase-IV (DPP-IV) inhibitory and insulinotropic activity. 2020

Pádraigín A Harnedy-Rothwell, and Chris M McLaughlin, and Martina B O'Keeffe, and Aurélien V Le Gouic, and Philip J Allsopp, and Emeir M McSorley, and Shaun Sharkey, and Jason Whooley, and Brian McGovern, and Finbarr P M O'Harte, and Richard J FitzGerald

Department of Biological Sciences, University of Limerick, Limerick, Ireland.

Twenty-two novel dipeptidyl peptidase-IV (DPP-IV) inhibitory peptides (with IC50 values <200 µM) and fifteen novel insulinotropic peptides were identified in a boarfish protein hydrolysate generated at semi-pilot scale using Alcalase 2.4L and Flavourzyme 500L. This was achieved by bioassay-driven semi-preparative reverse phase-high performance liquid chromatography fractionation, liquid chromatography-mass spectrometry and confirmatory studies with synthetic peptides. The most potent DPP-IV inhibitory peptide (IPVDM) had a DPP-IV half maximal inhibitory concentration (IC50) value of 21.72 ± 1.08 µM in a conventional in vitro and 44.26 ± 0.65 µM in an in situ cell-based (Caco-2) DPP-IV inhibition assay. Furthermore, this peptide stimulated potent insulin secretory activity (1.6-fold increase compared to control) from pancreatic BRIN-BD11 cells grown in culture. The tripeptide IPV exhibited potent DPP-IV inhibitory activity (IC50: 5.61 ± 0.20 µM) comparable to that reported for the known DPP-IV inhibitor IPI (IC50: 3.20 µM). Boarfish proteins contain peptide sequences with potential to play a role in glycaemic management in vivo.

UI	MeSH Term	Description	Entries
D007004	Hypoglycemic Agents	Substances which lower blood glucose levels.	Antidiabetic,Antidiabetic Agent,Antidiabetic Drug,Antidiabetics,Antihyperglycemic,Antihyperglycemic Agent,Hypoglycemic,Hypoglycemic Agent,Hypoglycemic Drug,Antidiabetic Agents,Antidiabetic Drugs,Antihyperglycemic Agents,Antihyperglycemics,Hypoglycemic Drugs,Hypoglycemic Effect,Hypoglycemic Effects,Hypoglycemics,Agent, Antidiabetic,Agent, Antihyperglycemic,Agent, Hypoglycemic,Agents, Antidiabetic,Agents, Antihyperglycemic,Agents, Hypoglycemic,Drug, Antidiabetic,Drug, Hypoglycemic,Drugs, Antidiabetic,Drugs, Hypoglycemic,Effect, Hypoglycemic,Effects, Hypoglycemic
D011492	Protein Hydrolysates	A complex mixture of OLIGOPEPTIDES, PEPTIDES, and free AMINO ACIDS that are produced by partial or extensive hydrolysis.	Protein Hydrolysate,Hydrolysate, Protein,Hydrolysates, Protein
D005399	Fishes	A group of cold-blooded, aquatic vertebrates having gills, fins, a cartilaginous or bony endoskeleton, and elongated bodies covered with scales.
D000595	Amino Acid Sequence	The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.	Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D054873	Dipeptidyl-Peptidase IV Inhibitors	Compounds that suppress the degradation of INCRETINS by blocking the action of DIPEPTIDYL-PEPTIDASE IV. This helps to correct the defective INSULIN and GLUCAGON secretion characteristic of TYPE 2 DIABETES MELLITUS by stimulating insulin secretion and suppressing glucagon release.	DPP-4 Inhibitor,DPP-4 Inhibitors,DPP-IV Inhibitor,DPP-IV Inhibitors,DPP4 Inhibitor,DPP4 Inhibitors,Dipeptidyl Peptidase 4 Inhibitor,Dipeptidyl-Peptidase 4 Inhibitor,Dipeptidyl-Peptidase IV Inhibitor,Gliptin,Gliptins,Dipeptidyl-Peptidase 4 Inhibitors,DPP 4 Inhibitor,DPP 4 Inhibitors,DPP IV Inhibitor,DPP IV Inhibitors,Dipeptidyl Peptidase 4 Inhibitors,Dipeptidyl Peptidase IV Inhibitor,Dipeptidyl Peptidase IV Inhibitors,Inhibitor, DPP-4,Inhibitor, DPP-IV,Inhibitor, DPP4,Inhibitor, Dipeptidyl-Peptidase 4,Inhibitor, Dipeptidyl-Peptidase IV
D029941	Fish Proteins	Proteins obtained from species of fish (FISHES).	Fish Protein,Protein, Fish,Proteins, Fish