Related ArticlesApplication of 2D-NMR with room temperature NMR probes for the assessment of the higher order structure of filgrastim.
J Pharm Biomed Anal. 2017 Jul 15;141:229-233
Authors: Brinson RG, Ghasriani H, Hodgson DJ, Adams KM, McEwen I, Freedberg DI, Chen K, Keire DA, Aubin Y, Marino JP
Abstract
The higher order structure (HOS) of biotherapeutics is a critical quality attribute that can be evaluated by nuclear magnetic resonance (NMR) spectroscopy at atomic resolution. NMR spectral mapping of HOS can be used to establish HOS consistency of a biologic across manufacturing changes or to compare a biosimilar to an innovator reference product. A previous inter-laboratory study performed using filgrastim drug products demonstrated that two-dimensional (2D)-NMR 1HN-15NH heteronuclear correlation spectroscopy is a highly robust and precise method for mapping the HOS of biologic drugs at natural abundance using high sensitivity NMR 'cold probes.' Here, the applicability of the 2D-NMR method to fingerprint the HOS of filgrastim products is demonstrated using lower sensitivity, room temperature NMR probes. Combined chemical shift deviation and principal component analysis are used to illustrate the performance and inter-laboratory precision of the 2D-NMR method when implemented on room temperature probes.
[NMR paper] Monitoring Effects of Excipients, Formulation Parameters and Mutations on the High Order Structure of Filgrastim by NMR.
Monitoring Effects of Excipients, Formulation Parameters and Mutations on the High Order Structure of Filgrastim by NMR.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--production.springer.de-OnlineResources-Logos-springerlink.gif Related Articles Monitoring Effects of Excipients, Formulation Parameters and Mutations on the High Order Structure of Filgrastim by NMR.
Pharm Res. 2015 Oct;32(10):3365-75
Authors: Aubin Y, Hodgson DJ, Thach WB, Gingras G, Sauvé S
Abstract
PURPOSE: Filgrastim is the generic...
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06-24-2016 12:53 PM
[NMR paper] Precision and robustness of 2D-NMR for structure assessment of filgrastim biosimilars.
Precision and robustness of 2D-NMR for structure assessment of filgrastim biosimilars.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.nature.com-images-lo_nbt.gif Related Articles Precision and robustness of 2D-NMR for structure assessment of filgrastim biosimilars.
Nat Biotechnol. 2016 Feb;34(2):139-41
Authors: Ghasriani H, Hodgson DJ, Brinson RG, McEwen I, Buhse LF, Kozlowski S, Marino JP, Aubin Y, Keire DA
PMID: 26849514
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06-22-2016 09:14 PM
Higher Order Amyloid Fibril Structure by MAS NMR and DNP Spectroscopy
From The DNP-NMR Blog:
Higher Order Amyloid Fibril Structure by MAS NMR and DNP Spectroscopy
Debelouchina, G.T., et al., Higher Order Amyloid Fibril Structure by MAS NMR and DNP Spectroscopy. J Am Chem Soc, 2013. 135(51): p. 19237-47.
http://www.ncbi.nlm.nih.gov/pubmed/24304221
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01-27-2014 09:59 PM
Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control
From The DNP-NMR Blog:
Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control
Sakaguchi, S., et al., Proton polarization in photo-excited aromatic molecule at room temperature enhanced by intense optical source and temperature control. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2013. 317(0): p. 679-684.
http://www.sciencedirect.com/science/article/pii/S0168583X13008872
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01-23-2014 01:37 AM
[NMR paper] Higher Order Amyloid Fibril Structure by MAS NMR and DNP Spectroscopy.
Higher Order Amyloid Fibril Structure by MAS NMR and DNP Spectroscopy.
Related Articles Higher Order Amyloid Fibril Structure by MAS NMR and DNP Spectroscopy.
J Am Chem Soc. 2013 Dec 4;
Authors: Debelouchina GT, Bayro MJ, Fitzpatrick AW, Ladizhansky V, Colvin MT, Caporini MA, Jaroniec CP, Bajaj VS, Rosay MM, Macphee CE, Vendruscolo M, Maas WE, Dobson CM, Griffin RG
Abstract
Protein magic angle spinning (MAS) NMR spectroscopy has generated structural models of several amyloid fibril systems, thus providing valuable information regarding the...
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12-07-2013 01:00 PM
Journal Highlight: Assessment of higher order structure comparability in ... - spectroscopyNOW.com
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Journal Highlight: Assessment of higher order structure comparability in ...
spectroscopyNOW.com
Abstract: In this work, we applied nuclear magnetic resonance (NMR) spectroscopy to rapidly assess higher order structure (HOS) comparability in protein samples. Using a variation of the NMR fingerprinting approach described by Panjwani et al.
Journal Highlight: Assessment of higher order structure comparability in ... - spectroscopyNOW.com
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06-03-2013 04:21 PM
Journal Highlight: Assessment of higher order structure comparability in therapeutic proteins using nuclear magnetic resonance spectroscopy
Journal Highlight: Assessment of higher order structure comparability in therapeutic proteins using nuclear magnetic resonance spectroscopy
http://www.spectroscopynow.com/common/images/thumbnails/13ef9b3d882.jpgNMR spectroscopy using a fingerprinting approach has been used to rapidly assess higher order structure comparability in three nonglycosylated proteins spanning a molecular weight range of 6.5–67 kDa.
Read the rest at Spectroscopynow.com
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06-03-2013 04:21 PM
[NMR paper] Improving NMR sensitivity in room temperature and cooled probes with dipolar ions.
Improving NMR sensitivity in room temperature and cooled probes with dipolar ions.
Related Articles Improving NMR sensitivity in room temperature and cooled probes with dipolar ions.
J Magn Reson. 2005 Apr;173(2):339-43
Authors: Lane AN, Arumugam S
The response of inverse triple resonance cold and conventional probes to ionic strength has been compared under a variety of conditions relevant to protein NMR. Increasing the salt concentration degrades probe performance in terms of sensitivity, and the effect is more severe for cold probes and...