6533b825fe1ef96bd128202a
RESEARCH PRODUCT
Thermal aggregation of glycated bovine serum albumin
Philippe RondeauFrancesco CacciabaudoGiovanna NavarraEmmanuel BourdonMaurizio LeoneValeria Militellosubject
Glycation End Products AdvancedGlycosylationHot TemperatureGlycoxidation02 engineering and technologyProtein aggregationBiochemistryProtein Structure SecondaryAnalytical Chemistrychemistry.chemical_compoundProtein structureGlycationSpectroscopy Fourier Transform InfraredScattering RadiationGlycated Serum AlbuminBovine serum albuminGlycation0303 health sciencesbiologyChemistryTryptophanSerum Albumin Bovine021001 nanoscience & nanotechnology3. Good healthSpectrophotometryProtein aggregation0210 nano-technologyOxidation-ReductionGlycosylationBiophysicsSerum albuminIn Vitro Techniques03 medical and health sciencesAnimalsMolecular BiologySerum Albumin030304 developmental biologyChromatographyAlbuminAlbuminLight scatteringSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Protein tertiary structureProtein Structure TertiaryKineticsFTIR spectroscopyGlucoseSpectrometry FluorescenceUnfolded Protein Responsebiology.proteinCattleProtein Multimerization[SDV.MHEP]Life Sciences [q-bio]/Human health and pathologydescription
International audience; Aggregation and glycation processes in proteins have a particular interest in medicine fields and in food technology. Serum albumins are model proteins which are able to self-assembly in aggregates and also sensitive to a non-enzymatic glycation in cases of diabetes. In this work, we firstly reported a study on the glycation and oxidation effects on the structure of bovine serum albumin (BSA). The experimental approach is based on the study of conformational changes of BSA at secondary and tertiary structures by FTIR absorption and fluorescence spectroscopy, respectively. Secondly, we analysed the thermal aggregation process on BSA glycated with different glucose concentrations. Additional information on the aggregation kinetics are obtained by light scattering measurements. The results show that glycation process affects the native structure of BSA. Then, the partial unfolding of the tertiary structure which accompanies the aggregation process is similar both in native and glycated BSA. In particular, the formation of aggregates is progressively inhibited with growing concentration of glucose incubated with BSA. These results bring new insights on how aggregation process is affected by modification of BSA induced by glycation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-01-01 | Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics |