State-of-the-art and novel approaches to mild solubilization of inclusion bodies

Throughout the twenty-first century, the view on inclusion bodies (IBs) has shifted from undesired by-products towards a targeted production strategy for recombinant proteins. Inclusion bodies can easily be separated from the crude extract after cell lysis and contain the product in high purity. How...

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Main Authors: Robert Klausser, Julian Kopp, Eva Prada Brichtova, Florian Gisperg, Mohamed Elshazly, Oliver Spadiut
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-07-01
Series:Frontiers in Bioengineering and Biotechnology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fbioe.2023.1249196/full
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author Robert Klausser
Robert Klausser
Julian Kopp
Julian Kopp
Eva Prada Brichtova
Eva Prada Brichtova
Florian Gisperg
Florian Gisperg
Mohamed Elshazly
Mohamed Elshazly
Oliver Spadiut
Oliver Spadiut
author_facet Robert Klausser
Robert Klausser
Julian Kopp
Julian Kopp
Eva Prada Brichtova
Eva Prada Brichtova
Florian Gisperg
Florian Gisperg
Mohamed Elshazly
Mohamed Elshazly
Oliver Spadiut
Oliver Spadiut
author_sort Robert Klausser
collection DOAJ
description Throughout the twenty-first century, the view on inclusion bodies (IBs) has shifted from undesired by-products towards a targeted production strategy for recombinant proteins. Inclusion bodies can easily be separated from the crude extract after cell lysis and contain the product in high purity. However, additional solubilization and refolding steps are required in the processing of IBs to recover the native protein. These unit operations remain a highly empirical field of research in which processes are developed on a case-by-case basis using elaborate screening strategies. It has been shown that a reduction in denaturant concentration during protein solubilization can increase the subsequent refolding yield due to the preservation of correctly folded protein structures. Therefore, many novel solubilization techniques have been developed in the pursuit of mild solubilization conditions that avoid total protein denaturation. In this respect, ionic liquids have been investigated as promising agents, being able to solubilize amyloid-like aggregates and stabilize correctly folded protein structures at the same time. This review briefly summarizes the state-of-the-art of mild solubilization of IBs and highlights some challenges that prevent these novel techniques from being yet adopted in industry. We suggest mechanistic models based on the thermodynamics of protein unfolding with the aid of molecular dynamics simulations as a possible approach to solve these challenges in the future.
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spelling doaj.art-b5951335e5a241109838bfc30067f3752024-03-12T12:19:07ZengFrontiers Media S.A.Frontiers in Bioengineering and Biotechnology2296-41852023-07-011110.3389/fbioe.2023.12491961249196State-of-the-art and novel approaches to mild solubilization of inclusion bodiesRobert Klausser0Robert Klausser1Julian Kopp2Julian Kopp3Eva Prada Brichtova4Eva Prada Brichtova5Florian Gisperg6Florian Gisperg7Mohamed Elshazly8Mohamed Elshazly9Oliver Spadiut10Oliver Spadiut11Research Division Integrated Bioprocess Development, Institute of Chemical, Environmental and Bioscience, Vienna, AustriaChristian Doppler Laboratory IB Processing 4.0, Technische Universität Wien, Vienna, AustriaResearch Division Integrated Bioprocess Development, Institute of Chemical, Environmental and Bioscience, Vienna, AustriaChristian Doppler Laboratory IB Processing 4.0, Technische Universität Wien, Vienna, AustriaResearch Division Integrated Bioprocess Development, Institute of Chemical, Environmental and Bioscience, Vienna, AustriaChristian Doppler Laboratory IB Processing 4.0, Technische Universität Wien, Vienna, AustriaResearch Division Integrated Bioprocess Development, Institute of Chemical, Environmental and Bioscience, Vienna, AustriaChristian Doppler Laboratory IB Processing 4.0, Technische Universität Wien, Vienna, AustriaResearch Division Integrated Bioprocess Development, Institute of Chemical, Environmental and Bioscience, Vienna, AustriaChristian Doppler Laboratory IB Processing 4.0, Technische Universität Wien, Vienna, AustriaResearch Division Integrated Bioprocess Development, Institute of Chemical, Environmental and Bioscience, Vienna, AustriaChristian Doppler Laboratory IB Processing 4.0, Technische Universität Wien, Vienna, AustriaThroughout the twenty-first century, the view on inclusion bodies (IBs) has shifted from undesired by-products towards a targeted production strategy for recombinant proteins. Inclusion bodies can easily be separated from the crude extract after cell lysis and contain the product in high purity. However, additional solubilization and refolding steps are required in the processing of IBs to recover the native protein. These unit operations remain a highly empirical field of research in which processes are developed on a case-by-case basis using elaborate screening strategies. It has been shown that a reduction in denaturant concentration during protein solubilization can increase the subsequent refolding yield due to the preservation of correctly folded protein structures. Therefore, many novel solubilization techniques have been developed in the pursuit of mild solubilization conditions that avoid total protein denaturation. In this respect, ionic liquids have been investigated as promising agents, being able to solubilize amyloid-like aggregates and stabilize correctly folded protein structures at the same time. This review briefly summarizes the state-of-the-art of mild solubilization of IBs and highlights some challenges that prevent these novel techniques from being yet adopted in industry. We suggest mechanistic models based on the thermodynamics of protein unfolding with the aid of molecular dynamics simulations as a possible approach to solve these challenges in the future.https://www.frontiersin.org/articles/10.3389/fbioe.2023.1249196/fullinclusion bodiesmild solubilizationionic liquidsmolecular dynamics simulationrefoldingaggregates
spellingShingle Robert Klausser
Robert Klausser
Julian Kopp
Julian Kopp
Eva Prada Brichtova
Eva Prada Brichtova
Florian Gisperg
Florian Gisperg
Mohamed Elshazly
Mohamed Elshazly
Oliver Spadiut
Oliver Spadiut
State-of-the-art and novel approaches to mild solubilization of inclusion bodies
Frontiers in Bioengineering and Biotechnology
inclusion bodies
mild solubilization
ionic liquids
molecular dynamics simulation
refolding
aggregates
title State-of-the-art and novel approaches to mild solubilization of inclusion bodies
title_full State-of-the-art and novel approaches to mild solubilization of inclusion bodies
title_fullStr State-of-the-art and novel approaches to mild solubilization of inclusion bodies
title_full_unstemmed State-of-the-art and novel approaches to mild solubilization of inclusion bodies
title_short State-of-the-art and novel approaches to mild solubilization of inclusion bodies
title_sort state of the art and novel approaches to mild solubilization of inclusion bodies
topic inclusion bodies
mild solubilization
ionic liquids
molecular dynamics simulation
refolding
aggregates
url https://www.frontiersin.org/articles/10.3389/fbioe.2023.1249196/full
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