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Hosseini H, Rangchian A, Prins ML, Giza CC, Ruberti JW, Kavehpour HP. Probing Flow-Induced Biomolecular Interactions With Micro-Extensional Rheology: Tau Protein Aggregation. J Biomech Eng 2020; 142:1074527. [DOI: 10.1115/1.4046330] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Indexed: 11/08/2022]
Abstract
Abstract
Biomolecules in solutions subjected to extensional strain can form aggregates, which may be important for our understanding of pathologies involving insoluble protein structures where mechanical forces are thought to be causative (e.g., tau fibers in chronic traumatic encephalopathy (CTE)). To examine the behavior of biomolecules in solution under mechanical strains requires applying rheological methods, often to very small sample volumes. There were two primary objectives in this investigation: (1) To probe flow-induced aggregation of proteins in microliter-sized samples and (2) To test the hypothesis that tau protein aggregates under extensional flow. Tau protein (isoform:3R 0 N; 36.7 kDa) was divided into 10 μl droplets and subjected to extensional strain in a modified tensiometer. Sixteen independent tests were performed where one test on a single droplet comprised three extensional events. To assess the rheological performance of the fluid/tau mixture, the diameter of the filament that formed during extension was tracked as function of time and analyzed for signs of aggregation (i.e., increased relaxation time). The results were compared to two molecules of similar and greater size (Polyethylene Oxide: PEO35, 35 kDa and PEO100, 100 kDa). Analysis showed that the tau protein solution and PEO35 are likely to have formed aggregates, albeit at relatively high extensional strain rates (∼10 kHz). The investigation demonstrates an extensional rheological method capable of determining the properties of protein solutions in μl volumes and that tau protein can aggregate when exposed to a single extensional strain with potentially significant biological implications.
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Affiliation(s)
- H. Hosseini
- School of Medicine, Tehran University of Medical Sciences, Tehran 1416753955, Iran
| | - A. Rangchian
- Mechanical and Aerospace Engineering and Bioengineering, University of California at Los Angeles, Los Angeles, CA 90095
| | - M. L. Prins
- Departments of Pediatrics, Neurosurgery and Bioengineering, Brain Injury Research Center, University of California at Los Angeles, Los Angeles, CA 90095
| | - C. C. Giza
- Departments of Pediatrics, Neurosurgery and Bioengineering, Brain Injury Research Center, University of California at Los Angeles, Los Angeles, CA 90095
| | - J. W. Ruberti
- Department of Bioengineering, Northeastern University, Boston, MA 02115
| | - H. P. Kavehpour
- Mechanical and Aerospace Engineering and Bioengineering, University of California at Los Angeles, Los Angeles, CA 90095
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52
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Duchêne C, Filipe V, Huille S, Lindner A. Clogging of microfluidic constrictions by monoclonal antibody aggregates: role of aggregate shape and deformability. SOFT MATTER 2020; 16:921-928. [PMID: 31813947 DOI: 10.1039/c9sm01583c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The formation of aggregates in solutions of monoclonal antibodies is difficult to prevent. Even if the occurrence of large aggregates is rare, their existence can lead to partial or total clogging of constrictions in injection devices, with drastic effects on drug delivery. Little is known on the origin and characteristics of such clogging events. Here we investigate a microfluidic model system to gain fundamental understanding of the clogging of constrictions by monoclonal antibody aggregates. Highly concentrated solutions of monoclonal antibodies were used to create protein aggregates (larger than 50 microns) using mechanical or heat stress. We show that clogging occurs when aggregates reach the size of the constriction and that clogs can in some cases be released by increasing the applied pressure. This indicates the important role of protein aggregate deformability. We perform systematic experiments for different relative aggregate sizes and applied pressures, and measure the resulting flow-rate. This allows us to present first in situ estimates of an effective Young's modulus. Despite their different shapes and densities, we can predict the number of clogging events for a given constriction size from the aggregate size distribution measured by Flow Imaging Microscopy (MFI). In addition our device can detect the occurrence of very rare big aggregates often overlooked by other detection methods.
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Affiliation(s)
- Charles Duchêne
- PMMH, CNRS, ESPCI Paris, PSL University, Sorbonne Université, Université de Paris, F-75005, Paris, France.
| | - Vasco Filipe
- Sanofi Biopharmaceutics Development, Impasse des Ateliers, 94400 Vitry-sur-Seine, France
| | - Sylvain Huille
- Sanofi Biopharmaceutics Development, Impasse des Ateliers, 94400 Vitry-sur-Seine, France
| | - Anke Lindner
- PMMH, CNRS, ESPCI Paris, PSL University, Sorbonne Université, Université de Paris, F-75005, Paris, France.
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53
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Le Basle Y, Chennell P, Tokhadze N, Astier A, Sautou V. Physicochemical Stability of Monoclonal Antibodies: A Review. J Pharm Sci 2020; 109:169-190. [DOI: 10.1016/j.xphs.2019.08.009] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/19/2019] [Accepted: 08/19/2019] [Indexed: 01/10/2023]
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Grigolato F, Arosio P. Synergistic effects of flow and interfaces on antibody aggregation. Biotechnol Bioeng 2019; 117:417-428. [DOI: 10.1002/bit.27212] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 08/27/2019] [Accepted: 10/21/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Fulvio Grigolato
- Department of Chemistry and Applied BiosciencesInstitute for Chemical and Bioengineering, ETH Zurich Zurich Switzerland
| | - Paolo Arosio
- Department of Chemistry and Applied BiosciencesInstitute for Chemical and Bioengineering, ETH Zurich Zurich Switzerland
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55
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Grabarek AD, Bozic U, Rousel J, Menzen T, Kranz W, Wuchner K, Jiskoot W, Hawe A. What Makes Polysorbate Functional? Impact of Polysorbate 80 Grade and Quality on IgG Stability During Mechanical Stress. J Pharm Sci 2019; 109:871-880. [PMID: 31614127 DOI: 10.1016/j.xphs.2019.10.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/04/2019] [Accepted: 10/08/2019] [Indexed: 11/18/2022]
Abstract
Polysorbate 80 (PS80) is a commonly used surfactant in therapeutic protein formulations to mitigate adsorption and interface-induced protein aggregation. Several PS80 grades and qualities are available on the market for parenteral application. The role of PS80 grade on protein stability remains debatable, and the impact of (partially) degraded PS on protein aggregation is not yet well understood. In our study, a monoclonal antibody (IgG) was subjected to 3 different mechanical stress conditions in the presence of multicompendial (MC) and Chinese pharmacopeia (ChP) grade PS80. Furthermore, IgG formulations were spiked with (partly) hydrolyzed PS80 to investigate the effect of PS80 degradants on protein stability. PS80 functionality was assessed by measuring the extent of protein aggregation and particle formation induced during mechanical stress by using size-exclusion chromatography, dynamic light scattering, backgrounded membrane imaging, and flow imaging microscopy. No distinguishable differences in PS80 functionality between MC and ChP grade were observed in the 3 stress tests. However, with increasing degree of PS80 hydrolysis, higher counts of subvisible particles were measured after stress. Furthermore, higher levels of PS80 degradants at a constant PS80 concentration may destabilize the IgG. In conclusion, MC and ChP grade PS80 are equally protective, but PS80 degradants compromise IgG stability.
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Affiliation(s)
- Adam Dariusz Grabarek
- Coriolis Pharma Research, Fraunhoferstr. 18b, 82152 Martinsried, Germany; Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Ula Bozic
- Coriolis Pharma Research, Fraunhoferstr. 18b, 82152 Martinsried, Germany
| | - Jannik Rousel
- Coriolis Pharma Research, Fraunhoferstr. 18b, 82152 Martinsried, Germany; Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Tim Menzen
- Coriolis Pharma Research, Fraunhoferstr. 18b, 82152 Martinsried, Germany
| | - Wendelin Kranz
- Coriolis Pharma Research, Fraunhoferstr. 18b, 82152 Martinsried, Germany
| | - Klaus Wuchner
- Janssen Research & Development, Pharmaceutical Development & Manufacturing Sciences, Large Molecule Analytical Development, Schaffhausen, Switzerland
| | - Wim Jiskoot
- Coriolis Pharma Research, Fraunhoferstr. 18b, 82152 Martinsried, Germany; Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands
| | - Andrea Hawe
- Coriolis Pharma Research, Fraunhoferstr. 18b, 82152 Martinsried, Germany.
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Abstract
Focus a laser on dissolved particles and analyze the scattered light to reveal their size. This well established principle is used in dynamic light scattering (DLS), or also called photon-correlation spectroscopy, which is a widely popular and highly adaptable analytical method applied in different fields of life and material sciences, as well as in industrial quality control processes.
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Affiliation(s)
- Alice S. Pereira
- grid.10772.330000000121511713Molecular Biophysics Lab., UCIBIO/Requimte, Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Pedro Tavares
- grid.10772.330000000121511713Molecular Biophysics Lab., UCIBIO/Requimte, Department of Chemistry, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Paulo Limão-Vieira
- grid.10772.330000000121511713Atomic and Molecular Collisions Laboratory, CEFITEC, Department of Physics, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal
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57
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Trumbore CN. Shear-Induced Amyloid Formation in the Brain: III. The Roles of Shear Energy and Seeding in a Proposed Shear Model. J Alzheimers Dis 2019; 65:47-70. [PMID: 30040710 PMCID: PMC6087447 DOI: 10.3233/jad-171003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
If cerebrospinal and interstitial fluids move through very narrow brain flow channels, these restrictive surroundings generate varying levels of fluid shear and different shear rates, and dissolved amyloid monomers absorb different shear energies. It is proposed that dissolved amyloid-β protein (Aβ) and other amyloid monomers undergo shear-induced conformational changes that ultimately lead to amyloid monomer aggregation even at very low brain flow and shear rates. Soluble Aβ oligomers taken from diseased brains initiate in vivo amyloid formation in non-diseased brains. The brain environment is apparently responsible for this result. A mechanism involving extensional shear is proposed for the formation of a seed Aβ monomer molecule that ultimately promotes templated conformational change of other Aβ molecules. Under non-quiescent, non-equilibrium conditions, gentle extensional shear within the brain parenchyma, and perhaps even during laboratory preparation of Aβ samples, may be sufficient to cause subtle conformational changes in these monomers. These result from brain processes that significantly lower the high activation energy predicted for the quiescent Aβ dimerization process. It is further suggested that changes in brain location and changes brought about by aging expose Aβ molecules to different shear rates, total shear, and types of shear, resulting in different conformational changes in these molecules. The consequences of such changes caused by variable shear energy are proposed to underlie formation of amyloid strains causing different amyloid diseases. Amyloid researchers are urged to undertake studies with amyloids, anti-amyloid drugs, and antibodies while all of these are under shear conditions similar to those in the brain.
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Affiliation(s)
- Conrad N Trumbore
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, USA
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58
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Xu Y, Safari MS, Ma W, Schafer NP, Wolynes PG, Vekilov PG. Steady, Symmetric, and Reversible Growth and Dissolution of Individual Amyloid-β Fibrils. ACS Chem Neurosci 2019; 10:2967-2976. [PMID: 31099555 DOI: 10.1021/acschemneuro.9b00179] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Oligomers and fibrils of the amyloid-β (Aβ) peptide are implicated in the pathology of Alzheimer's disease. Here, we monitor the growth of individual Aβ40 fibrils by time-resolved in situ atomic force microscopy and thereby directly measure fibril growth rates. The measured growth rates in a population of fibrils that includes both single protofilaments and bundles of filaments are independent of the fibril thickness, indicating that cooperation between adjacent protofilaments does not affect incorporation of monomers. The opposite ends of individual fibrils grow at similar rates. In contrast to the "stop-and-go" kinetics that has previously been observed for amyloid-forming peptides, growth and dissolution of the Aβ40 fibrils are relatively steady for peptide concentration of 0-10 μM. The fibrils readily dissolve in quiescent peptide-free solutions at a rate that is consistent with the microscopic reversibility of growth and dissolution. Importantly, the bimolecular rate coefficient for the association of a monomer to the fibril end is significantly smaller than the diffusion limit, implying that the transition state for incorporation of a monomer into a fibril is associated with a relatively high free energy.
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Affiliation(s)
- Yuechuan Xu
- Department of Chemical and Biomolecular Engineering, University of Houston, 4726 Calhoun Road, Houston, Texas 77204-4004, United States
| | - Mohammad S. Safari
- Department of Chemical and Biomolecular Engineering, University of Houston, 4726 Calhoun Road, Houston, Texas 77204-4004, United States
| | - Wenchuan Ma
- Department of Chemical and Biomolecular Engineering, University of Houston, 4726 Calhoun Road, Houston, Texas 77204-4004, United States
| | - Nicholas P. Schafer
- Center for Theoretical Biological Physics, Rice University, P.O. Box 1892, MS 654, Houston, Texas 77251-1892, United States
- Department of Chemistry, Rice University, P.O. Box 1892, MS 60, Houston, Texas 77251-1892, United States
| | - Peter G. Wolynes
- Center for Theoretical Biological Physics, Rice University, P.O. Box 1892, MS 654, Houston, Texas 77251-1892, United States
- Department of Chemistry, Rice University, P.O. Box 1892, MS 60, Houston, Texas 77251-1892, United States
| | - Peter G. Vekilov
- Department of Chemical and Biomolecular Engineering, University of Houston, 4726 Calhoun Road, Houston, Texas 77204-4004, United States
- Department of Chemistry, University of Houston, 3585 Cullen Blvd., Houston, Texas 77204-5003, United States
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59
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Benseny-Cases N, Karamanos TK, Hoop CL, Baum J, Radford SE. Extracellular matrix components modulate different stages in β 2-microglobulin amyloid formation. J Biol Chem 2019; 294:9392-9401. [PMID: 30996004 PMCID: PMC6579475 DOI: 10.1074/jbc.ra119.008300] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/09/2019] [Indexed: 11/26/2022] Open
Abstract
Amyloid deposition of WT human β2-microglobulin (WT-hβ2m) in the joints of long-term hemodialysis patients is the hallmark of dialysis-related amyloidosis. In vitro, WT-hβ2m does not form amyloid fibrils at physiological pH and temperature unless co-solvents or other reagents are added. Therefore, understanding how fibril formation is initiated and maintained in the joint space is important for elucidating WT-hβ2m aggregation and dialysis-related amyloidosis onset. Here, we investigated the roles of collagen I and the commonly administered anticoagulant, low-molecular-weight (LMW) heparin, in the initiation and subsequent aggregation phases of WT-hβ2m in physiologically relevant conditions. Using thioflavin T fluorescence to study the kinetics of amyloid formation, we analyzed how these two agents affect specific stages of WT-hβ2m assembly. Our results revealed that LMW-heparin strongly promotes WT-hβ2m fibrillogenesis during all stages of aggregation. However, collagen I affected WT-hβ2m amyloid formation in contrasting ways: decreasing the lag time of fibril formation in the presence of LMW-heparin and slowing the rate at higher concentrations. We found that in self-seeded reactions, interaction of collagen I with WT-hβ2m amyloid fibrils attenuates surface-mediated growth of WT-hβ2m fibrils, demonstrating a key role of secondary nucleation in WT-hβ2m amyloid formation. Interestingly, collagen I fibrils did not suppress surface-mediated assembly of WT-hβ2m monomers when cross-seeded with fibrils formed from the N-terminally truncated variant ΔN6-hβ2m. Together, these results provide detailed insights into how collagen I and LMW-heparin impact different stages in the aggregation of WT-hβ2m into amyloid, which lead to dramatic effects on the time course of assembly.
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Affiliation(s)
- Núria Benseny-Cases
- From the Astbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom and
| | - Theodoros K Karamanos
- From the Astbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom and
| | - Cody L Hoop
- the Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854
| | - Jean Baum
- the Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854
| | - Sheena E Radford
- From the Astbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom and
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60
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Trumbore CN. Shear-induced amyloid formation of IDPs in the brain. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 166:225-309. [DOI: 10.1016/bs.pmbts.2019.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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61
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Cantaut-Belarif Y, Sternberg JR, Thouvenin O, Wyart C, Bardet PL. The Reissner Fiber in the Cerebrospinal Fluid Controls Morphogenesis of the Body Axis. Curr Biol 2018; 28:2479-2486.e4. [PMID: 30057305 PMCID: PMC6089837 DOI: 10.1016/j.cub.2018.05.079] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/15/2018] [Accepted: 05/25/2018] [Indexed: 01/12/2023]
Abstract
Organ development depends on the integration of coordinated long-range communication between cells. The cerebrospinal fluid composition and flow properties regulate several aspects of central nervous system development, including progenitor proliferation, neurogenesis, and migration [1-3]. One understudied component of the cerebrospinal fluid, described over a century ago in vertebrates, is the Reissner fiber. This extracellular thread forming early in development results from the assembly of the SCO-spondin protein in the third and fourth brain ventricles and central canal of the spinal cord [4]. Up to now, the function of the Reissner fiber has remained elusive, partly due to the lack of genetic invalidation models [4]. Here, by mutating the scospondin gene, we demonstrate that the Reissner fiber is critical for the morphogenesis of a straight posterior body axis. In zebrafish mutants where the Reissner fiber is lost, ciliogenesis and cerebrospinal fluid flow are intact but body axis morphogenesis is impaired. Our results also explain the frequently observed phenotype that mutant embryos with defective cilia exhibit defects in body axis curvature. Here, we reveal that these mutants systematically fail to assemble the Reissner fiber. We show that cilia promote the formation of the Reissner fiber and that the fiber is necessary for proper body axis morphogenesis. Our study sets the stage for future investigations of the mechanisms linking the Reissner fiber to the control of body axis curvature during vertebrate development.
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Affiliation(s)
- Yasmine Cantaut-Belarif
- Institut du Cerveau et de la Moelle Épinière (ICM), Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 75013 Paris, France
| | - Jenna R Sternberg
- Institut du Cerveau et de la Moelle Épinière (ICM), Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 75013 Paris, France
| | - Olivier Thouvenin
- Institut du Cerveau et de la Moelle Épinière (ICM), Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 75013 Paris, France; Institut Langevin ESPCI, PSL Research University, CNRS UMR 7587, 1 Rue Jussieu, 75005 Paris, France
| | - Claire Wyart
- Institut du Cerveau et de la Moelle Épinière (ICM), Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 75013 Paris, France.
| | - Pierre-Luc Bardet
- Institut du Cerveau et de la Moelle Épinière (ICM), Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 75013 Paris, France.
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62
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Duerkop M, Berger E, Dürauer A, Jungbauer A. Impact of Cavitation, High Shear Stress and Air/Liquid Interfaces on Protein Aggregation. Biotechnol J 2018; 13:e1800062. [DOI: 10.1002/biot.201800062] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 02/28/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Mark Duerkop
- Austrian Centre of Industrial Biotechnology; 1190 Vienna Austria
| | - Eva Berger
- Austrian Centre of Industrial Biotechnology; 1190 Vienna Austria
| | - Astrid Dürauer
- Austrian Centre of Industrial Biotechnology; 1190 Vienna Austria
- University of Natural Resources and Life Sciences; Muthgasse 18 1190 Vienna Austria
| | - Alois Jungbauer
- Austrian Centre of Industrial Biotechnology; 1190 Vienna Austria
- University of Natural Resources and Life Sciences; Muthgasse 18 1190 Vienna Austria
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63
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Chantre CO, Campbell PH, Golecki HM, Buganza AT, Capulli AK, Deravi LF, Dauth S, Sheehy SP, Paten JA, Gledhill K, Doucet YS, Abaci HE, Ahn S, Pope BD, Ruberti JW, Hoerstrup SP, Christiano AM, Parker KK. Production-scale fibronectin nanofibers promote wound closure and tissue repair in a dermal mouse model. Biomaterials 2018; 166:96-108. [PMID: 29549768 DOI: 10.1016/j.biomaterials.2018.03.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 03/01/2018] [Accepted: 03/03/2018] [Indexed: 11/29/2022]
Abstract
Wounds in the fetus can heal without scarring. Consequently, biomaterials that attempt to recapitulate the biophysical and biochemical properties of fetal skin have emerged as promising pro-regenerative strategies. The extracellular matrix (ECM) protein fibronectin (Fn) in particular is believed to play a crucial role in directing this regenerative phenotype. Accordingly, Fn has been implicated in numerous wound healing studies, yet remains untested in its fibrillar conformation as found in fetal skin. Here, we show that high extensional (∼1.2 ×105 s-1) and shear (∼3 ×105 s-1) strain rates in rotary jet spinning (RJS) can drive high throughput Fn fibrillogenesis (∼10 mL/min), thus producing nanofiber scaffolds that are used to effectively enhance wound healing. When tested on a full-thickness wound mouse model, Fn nanofiber dressings not only accelerated wound closure, but also significantly improved tissue restoration, recovering dermal and epidermal structures as well as skin appendages and adipose tissue. Together, these results suggest that bioprotein nanofiber fabrication via RJS could set a new paradigm for enhancing wound healing and may thus find use in a variety of regenerative medicine applications.
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Affiliation(s)
- Christophe O Chantre
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA; Institute for Regenerative Medicine, University of Zurich, ZH, Switzerland
| | - Patrick H Campbell
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Holly M Golecki
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Adrian T Buganza
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA; Department of Mechanical Engineering, Purdue University, West Lafayette, IL, USA
| | - Andrew K Capulli
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Leila F Deravi
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA; Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Stephanie Dauth
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Sean P Sheehy
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Jeffrey A Paten
- Department of Bioengineering, Northeastern University, Boston, MA, UK
| | - Karl Gledhill
- Department of Dermatology, Columbia University, New York, NY, USA
| | - Yanne S Doucet
- Department of Dermatology, Columbia University, New York, NY, USA
| | - Hasan E Abaci
- Department of Dermatology, Columbia University, New York, NY, USA
| | - Seungkuk Ahn
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Benjamin D Pope
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA; Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jeffrey W Ruberti
- Department of Bioengineering, Northeastern University, Boston, MA, UK
| | - Simon P Hoerstrup
- Institute for Regenerative Medicine, University of Zurich, ZH, Switzerland
| | | | - Kevin Kit Parker
- Disease Biophysics Group, Wyss Institute for Biologically Inspired Engineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
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64
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Willis LF, Kumar A, Dobson J, Bond NJ, Lowe D, Turner R, Radford SE, Kapur N, Brockwell DJ. Using extensional flow to reveal diverse aggregation landscapes for three IgG1 molecules. Biotechnol Bioeng 2018; 115:1216-1225. [PMID: 29315487 PMCID: PMC5900942 DOI: 10.1002/bit.26543] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/27/2017] [Accepted: 01/03/2018] [Indexed: 12/28/2022]
Abstract
Monoclonal antibodies (mAbs) currently dominate the biopharmaceutical sector due to their potency and efficacy against a range of disease targets. These proteinaceous therapeutics are, however, susceptible to unfolding, mis‐folding, and aggregation by environmental perturbations. Aggregation thus poses an enormous challenge to biopharmaceutical development, production, formulation, and storage. Hydrodynamic forces have also been linked to aggregation, but the ability of different flow fields (e.g., shear and extensional flow) to trigger aggregation has remained unclear. To address this question, we previously developed a device that allows the degree of extensional flow to be controlled. Using this device we demonstrated that mAbs are particularly sensitive to the force exerted as a result of this flow‐field. Here, to investigate the utility of this device to bio‐process/biopharmaceutical development, we quantify the effects of the flow field and protein concentration on the aggregation of three mAbs. We show that the response surface of mAbs is distinct from that of bovine serum albumin (BSA) and also that mAbs of similar sequence display diverse sensitivity to hydrodynamic flow. Finally, we show that flow‐induced aggregation of each mAb is ameliorated by different buffers, opening up the possibility of using the device as a formulation tool. Perturbation of the native state by extensional flow may thus allow identification of aggregation‐resistant mAb candidates, their bio‐process parameters and formulation to be optimized earlier in the drug‐discovery pipeline using sub‐milligram quantities of material.
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Affiliation(s)
- Leon F Willis
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, West Yorkshire, UK.,School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, West Yorkshire, UK
| | - Amit Kumar
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, West Yorkshire, UK.,School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, West Yorkshire, UK
| | - John Dobson
- School of Mechanical Engineering, Faculty of Engineering, University of Leeds, Leeds, West Yorkshire, UK
| | | | - David Lowe
- MedImmune Ltd, Granta Park, Cambridge, UK
| | | | - Sheena E Radford
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, West Yorkshire, UK.,School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, West Yorkshire, UK
| | - Nikil Kapur
- School of Mechanical Engineering, Faculty of Engineering, University of Leeds, Leeds, West Yorkshire, UK
| | - David J Brockwell
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, West Yorkshire, UK.,School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, West Yorkshire, UK
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Duerkop M, Berger E, Dürauer A, Jungbauer A. Influence of cavitation and high shear stress on HSA aggregation behavior. Eng Life Sci 2017; 18:169-178. [PMID: 29610567 PMCID: PMC5873263 DOI: 10.1002/elsc.201700079] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 10/04/2017] [Accepted: 11/02/2017] [Indexed: 12/02/2022] Open
Abstract
Neither the influence of high shear rates nor the impact of cavitation on protein aggregation is fully understood. The effect of cavitation bubble collapse‐derived hydroxyl radicals on the aggregation behavior of human serum albumin (HSA) was investigated. Radicals were generated by pumping through a micro‐orifice, ultra‐sonication, or chemically by Fenton's reaction. The amount of radicals produced by the two mechanical methods (0.12 and 11.25 nmol/(L min)) was not enough to change the protein integrity. In contrast, Fenton's reaction resulted in 382 nmol/(L min) of radicals, inducing protein aggregation. However, the micro‐orifice promoted the formation of soluble dimeric HSA aggregates. A validated computational fluid dynamic model of the orifice revealed a maximum and average shear rate on the order of 108 s−1 and 1.2 × 106 s−1, respectively. Although these values are among the highest ever reported in the literature, dimer formation did not occur when we used the same flow rate but suppressed cavitation. Therefore, aggregation is most likely caused by the increased surface area due to cavitation‐mediated bubble growth, not by hydroxyl radical release or shear stress as often reported.
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Affiliation(s)
- Mark Duerkop
- Austrian Centre of Industrial BiotechnologyContinuous Integrated ManufacturingViennaAustria
| | - Eva Berger
- Austrian Centre of Industrial BiotechnologyContinuous Integrated ManufacturingViennaAustria
| | - Astrid Dürauer
- Austrian Centre of Industrial BiotechnologyContinuous Integrated ManufacturingViennaAustria
- University of Natural Resources and Life SciencesDepartment of BiotechnologyViennaAustria
| | - Alois Jungbauer
- Austrian Centre of Industrial BiotechnologyContinuous Integrated ManufacturingViennaAustria
- University of Natural Resources and Life SciencesDepartment of BiotechnologyViennaAustria
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66
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Grigolato F, Colombo C, Ferrari R, Rezabkova L, Arosio P. Mechanistic Origin of the Combined Effect of Surfaces and Mechanical Agitation on Amyloid Formation. ACS NANO 2017; 11:11358-11367. [PMID: 29045787 DOI: 10.1021/acsnano.7b05895] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Interactions between proteins and surfaces in combination with hydrodynamic flow and mechanical agitation can often trigger the conversion of soluble peptides and proteins into aggregates, including amyloid fibrils. Despite the extensive literature on the empirical effects of surfaces and mechanical forces on the formation of amyloids, the molecular details of the mechanisms underlying this behavior are still elusive. This limitation is, in part, due to the complex reaction network underlying the formation of amyloids, where several microscopic reactions of nucleation and growth can occur both at the interfaces and in bulk. In this work, we design a high-throughput assay based on nanoparticles and we apply a chemical kinetic platform to analyze the mechanisms underlying the effect of surfaces and mechanical forces on the formation of amyloid fibrils from human insulin under physiological conditions. By considering a variety of polymeric nanoparticles with different surface properties we explore a broad range of repulsive and attractive interactions between insulin and surfaces. Our analysis shows that hydrophobic interfaces induce the formation of amyloid fibrils by specifically promoting the primary heterogeneous nucleation rate. In contrast, mechanical forces accelerate the formation of amyloid fibrils by favoring mass transport and further amplify the number of fibrils by promoting fragmentation events. Thus, surfaces and agitation have a combined effect on the kinetics of protein aggregation observed at the macroscopic level but, individually, they each affect distinct microscopic reaction steps: the presence of interfaces generates primary nucleation events of fibril formation, which is then amplified by mechanical forces. These results suggest that the inhibition of surface-induced heterogeneous nucleation should be considered a primary target to suppress aggregation and explain why in many systems the simultaneous presence of surfaces and hydrodynamic flow enhances protein aggregation.
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Affiliation(s)
- Fulvio Grigolato
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology Zurich , Vladimir Prelog Weg 1, 8093, Zurich, Switzerland
| | - Claudio Colombo
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology Zurich , Vladimir Prelog Weg 1, 8093, Zurich, Switzerland
| | - Raffaele Ferrari
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology Zurich , Vladimir Prelog Weg 1, 8093, Zurich, Switzerland
| | - Lenka Rezabkova
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology Zurich , Vladimir Prelog Weg 1, 8093, Zurich, Switzerland
| | - Paolo Arosio
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology Zurich , Vladimir Prelog Weg 1, 8093, Zurich, Switzerland
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67
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Polyglutamine expansion diseases: More than simple repeats. J Struct Biol 2017; 201:139-154. [PMID: 28928079 DOI: 10.1016/j.jsb.2017.09.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 08/24/2017] [Accepted: 09/15/2017] [Indexed: 12/27/2022]
Abstract
Polyglutamine (polyQ) repeat-containing proteins are widespread in the human proteome but only nine of them are associated with highly incapacitating neurodegenerative disorders. The genetic expansion of the polyQ tract in disease-related proteins triggers a series of events resulting in neurodegeneration. The polyQ tract plays the leading role in the aggregation mechanism, but other elements modulate the aggregation propensity in the context of the full-length proteins, as implied by variations in the length of the polyQ tract required to trigger the onset of a given polyQ disease. Intrinsic features such as the presence of aggregation-prone regions (APRs) outside the polyQ segments and polyQ-flanking sequences, which synergistically participate in the aggregation process, are emerging for several disease-related proteins. The inherent polymorphic structure of polyQ stretches places the polyQ proteins in a central position in protein-protein interaction networks, where interacting partners may additionally shield APRs or reshape the aggregation course. Expansion of the polyQ tract perturbs the cellular homeostasis and contributes to neuronal failure by modulating protein-protein interactions and enhancing toxic oligomerization. Post-translational modifications further regulate self-assembly either by directly altering the intrinsic aggregation propensity of polyQ proteins, by modulating their interaction with different macromolecules or by modifying their withdrawal by the cell quality control machinery. Here we review the recent data on the multifaceted aggregation pathways of disease-related polyQ proteins, focusing on ataxin-3, the protein mutated in Machado-Joseph disease. Further mechanistic understanding of this network of events is crucial for the development of effective therapies for polyQ diseases.
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