Denaturation studies on bovine serum albumin–bile salt system: Bile salt stabilizes bovine serum albumin through hydrophobicity

Protein denaturation is under intensive research, since it leads to neurological disorders of severe consequences. Avoiding denaturation and stabilizing the proteins in their native state is of great importance, especially when proteins are used as drug molecules or vaccines. It is preferred to add...

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Main Authors: Karpagaraj Malarkani, Ivy Sarkar, Susithra Selvam
Format: Article
Language:English
Published: Elsevier 2018-02-01
Series:Journal of Pharmaceutical Analysis
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2095177917300734
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author Karpagaraj Malarkani
Ivy Sarkar
Susithra Selvam
author_facet Karpagaraj Malarkani
Ivy Sarkar
Susithra Selvam
author_sort Karpagaraj Malarkani
collection DOAJ
description Protein denaturation is under intensive research, since it leads to neurological disorders of severe consequences. Avoiding denaturation and stabilizing the proteins in their native state is of great importance, especially when proteins are used as drug molecules or vaccines. It is preferred to add pharmaceutical excipients in protein formulations to avoid denaturation and thereby stabilize them. The present study aimed at using bile salts (BSs), a group of well-known drug delivery systems, for stabilization of proteins. Bovine serum albumin (BSA) was taken as the model protein, whose association with two BSs, namely sodium cholate (NaC) and sodium deoxycholate (NaDC), was studied. Denaturation studies on the pre-formed BSA-BS systems were carried out under chemical and physical denaturation conditions. Urea was used as the chemical denaturant and BSA-BS systems were subjected to various temperature conditions to understand the thermal (physical) denaturation. With the denaturation conditions prescribed here, the data obtained is informative on the association of BSA-BS systems to be hydrophobic and this effect of hydrophobicity plays an important role in stabilizing the serum albumin in its native state under both chemical and thermal denaturation.
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spelling doaj.art-2e648019a1dd48f8afc1c379b2797b092022-12-21T17:14:41ZengElsevierJournal of Pharmaceutical Analysis2095-17792018-02-0181273610.1016/j.jpha.2017.06.007Denaturation studies on bovine serum albumin–bile salt system: Bile salt stabilizes bovine serum albumin through hydrophobicityKarpagaraj Malarkani0Ivy Sarkar1Susithra Selvam2Department of Chemistry, Vel Tech University, Avadi, Chennai 600062, IndiaDepartment of Chemistry, Indian Institute of Technology Madras, Chennai 600036, IndiaDepartment of Chemistry, Vel Tech University, Avadi, Chennai 600062, IndiaProtein denaturation is under intensive research, since it leads to neurological disorders of severe consequences. Avoiding denaturation and stabilizing the proteins in their native state is of great importance, especially when proteins are used as drug molecules or vaccines. It is preferred to add pharmaceutical excipients in protein formulations to avoid denaturation and thereby stabilize them. The present study aimed at using bile salts (BSs), a group of well-known drug delivery systems, for stabilization of proteins. Bovine serum albumin (BSA) was taken as the model protein, whose association with two BSs, namely sodium cholate (NaC) and sodium deoxycholate (NaDC), was studied. Denaturation studies on the pre-formed BSA-BS systems were carried out under chemical and physical denaturation conditions. Urea was used as the chemical denaturant and BSA-BS systems were subjected to various temperature conditions to understand the thermal (physical) denaturation. With the denaturation conditions prescribed here, the data obtained is informative on the association of BSA-BS systems to be hydrophobic and this effect of hydrophobicity plays an important role in stabilizing the serum albumin in its native state under both chemical and thermal denaturation.http://www.sciencedirect.com/science/article/pii/S2095177917300734Bile saltsBovine serum albuminChemical denaturationThermal denaturationTryptophan fluorescenceProtein stabilization
spellingShingle Karpagaraj Malarkani
Ivy Sarkar
Susithra Selvam
Denaturation studies on bovine serum albumin–bile salt system: Bile salt stabilizes bovine serum albumin through hydrophobicity
Journal of Pharmaceutical Analysis
Bile salts
Bovine serum albumin
Chemical denaturation
Thermal denaturation
Tryptophan fluorescence
Protein stabilization
title Denaturation studies on bovine serum albumin–bile salt system: Bile salt stabilizes bovine serum albumin through hydrophobicity
title_full Denaturation studies on bovine serum albumin–bile salt system: Bile salt stabilizes bovine serum albumin through hydrophobicity
title_fullStr Denaturation studies on bovine serum albumin–bile salt system: Bile salt stabilizes bovine serum albumin through hydrophobicity
title_full_unstemmed Denaturation studies on bovine serum albumin–bile salt system: Bile salt stabilizes bovine serum albumin through hydrophobicity
title_short Denaturation studies on bovine serum albumin–bile salt system: Bile salt stabilizes bovine serum albumin through hydrophobicity
title_sort denaturation studies on bovine serum albumin bile salt system bile salt stabilizes bovine serum albumin through hydrophobicity
topic Bile salts
Bovine serum albumin
Chemical denaturation
Thermal denaturation
Tryptophan fluorescence
Protein stabilization
url http://www.sciencedirect.com/science/article/pii/S2095177917300734
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AT ivysarkar denaturationstudiesonbovineserumalbuminbilesaltsystembilesaltstabilizesbovineserumalbuminthroughhydrophobicity
AT susithraselvam denaturationstudiesonbovineserumalbuminbilesaltsystembilesaltstabilizesbovineserumalbuminthroughhydrophobicity