[NMR paper] Identification of PTP1B and ?-Glucosidase Inhibitory Serrulatanes from Eremophila spp. by Combined use of Dual High-Resolution PTP1B and ?-Glucosidase Inhibition Profiling and HPLC-HRMS-SPE-NMR.
Identification of PTP1B and ?-Glucosidase Inhibitory Serrulatanes from Eremophila spp. by Combined use of Dual High-Resolution PTP1B and ?-Glucosidase Inhibition Profiling and HPLC-HRMS-SPE-NMR.
Related ArticlesIdentification of PTP1B and ?-Glucosidase Inhibitory Serrulatanes from Eremophila spp. by Combined use of Dual High-Resolution PTP1B and ?-Glucosidase Inhibition Profiling and HPLC-HRMS-SPE-NMR.
J Nat Prod. 2016 Mar 9;
Authors: Wubshet SG, Tahtah Y, Heskes AM, Kongstad KT, Pateraki I, Hamberger B, Møller BL, Staerk D
Abstract
According to the International Diabetes Federation, type 2 diabetes (T2D) has reached epidemic proportions, affecting more than 382 million people worldwide. Inhibition of protein tyrosine phosphatase-1B (PTP1B) and ?-glucosidase is a recognized therapeutic approach for management of T2D and its associated complications. The lack of clinical drugs targeting PTP1B and side effects of the existing ?-glucosidase drugs, emphasize the need for new drug leads for these T2D targets. In the present work, dual high-resolution PTP1B and ?-glucosidase inhibition profiles of Eremophila gibbosa, E. glabra, and E. aff. drummondii "Kalgoorlie" were used for pinpointing ?-glucosidase and/or PTP1B inhibitory constituents directly from the crude extracts. A subsequent targeted high-performance liquid chromatography-high-resolution mass spectrometry-solid-phase extraction-nuclear magnetic resonance spectroscopy (HPLC-HRMS-SPE-NMR) analysis and preparative-scale HPLC isolation led to identification of 21 metabolites from the three species, of which 16 were serrulatane-type diterpenoids (12 new) associated with either ?-glucosidase and/or PTP1B inhibition. This is the first report of serrulatane-type diterpenoids as potential ?-glucosidase and/or PTP1B inhibitors.
PMID: 26960032 [PubMed - as supplied by publisher]
[NMR paper] High-resolution screening combined with HPLC-HRMS-SPE-NMR for identification of fungal plasma membrane H(+)-ATPase inhibitors from plants.
High-resolution screening combined with HPLC-HRMS-SPE-NMR for identification of fungal plasma membrane H(+)-ATPase inhibitors from plants.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-pubmed-acspubs.jpg Related Articles High-resolution screening combined with HPLC-HRMS-SPE-NMR for identification of fungal plasma membrane H(+)-ATPase inhibitors from plants.
J Agric Food Chem. 2014 Jun 18;62(24):5595-602
Authors: Kongstad KT, Wubshet SG, Johannesen A, Kjellerup L, Winther AM, Jäger AK, Staerk D
...
[NMR paper] Rapid screening and identification of ?-glucosidase inhibitors from mulberry leaves using enzyme-immobilized magnetic beads coupled with HPLC/MS and NMR.
Rapid screening and identification of ?-glucosidase inhibitors from mulberry leaves using enzyme-immobilized magnetic beads coupled with HPLC/MS and NMR.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--media.wiley.com-assets-2250-98-WileyOnlineLibrary-Button_120x27px_FullText.gif Related Articles Rapid screening and identification of ?-glucosidase inhibitors from mulberry leaves using enzyme-immobilized magnetic beads coupled with HPLC/MS and NMR.
Biomed Chromatogr. 2013 Feb;27(2):148-55
Authors: Tao Y, Zhang Y, Cheng Y, Wang Y
...
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06-05-2013 06:53 PM
Journal Highlight: Coupling of a high-resolution monoamine oxidase-A inhibitor assay and HPLC–SPE–NMR for advanced bioactivity profiling of plant extracts
Journal Highlight: Coupling of a high-resolution monoamine oxidase-A inhibitor assay and HPLC–SPE–NMR for advanced bioactivity profiling of plant extracts
http://www.spectroscopynow.com/common/images/thumbnails/13d26a3428e.jpgA photometric microplate-based high-resolution monoamine oxidase A inhibitor assay was coupled with an HPLC–SPE–tube transfer NMR system for the bioactivity profiling of plant extracts in the search for new antidepressants.
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03-04-2013 03:07 PM
Towards automatic metabolomic profiling of high-resolution one-dimensional proton NMR spectra
Towards automatic metabolomic profiling of high-resolution one-dimensional proton NMR spectra
Abstract Nuclear magnetic resonance (NMR) and Mass Spectroscopy (MS) are the two most common spectroscopic analytical techniques employed in metabolomics. The large spectral datasets generated by NMR and MS are often analyzed using data reduction techniques like Principal Component Analysis (PCA). Although rapid, these methods are susceptible to solvent and matrix effects, high rates of false positives, lack of reproducibility and limited data transferability from one platform to the next....
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[NMR paper] High-resolution iterative frequency identification for NMR as a general strategy for multidimensional data collection.
High-resolution iterative frequency identification for NMR as a general strategy for multidimensional data collection.
Related Articles High-resolution iterative frequency identification for NMR as a general strategy for multidimensional data collection.
J Am Chem Soc. 2005 Sep 14;127(36):12528-36
Authors: Eghbalnia HR, Bahrami A, Tonelli M, Hallenga K, Markley JL
We describe a novel approach to the rapid collection and processing of multidimensional NMR data: "high-resolution iterative frequency identification for NMR" (HIFI-NMR). As with...
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12-01-2010 06:56 PM
[NMR paper] Probability-based protein secondary structure identification using combined NMR chemi
Probability-based protein secondary structure identification using combined NMR chemical-shift data.
Related Articles Probability-based protein secondary structure identification using combined NMR chemical-shift data.
Protein Sci. 2002 Apr;11(4):852-61
Authors: Wang Y, Jardetzky O
For a long time, NMR chemical shifts have been used to identify protein secondary structures. Currently, this is accomplished through comparing the observed (1)H(alpha), (13)C(alpha), (13)C(beta), or (13)C' chemical shifts with the random coil values. Here, we...
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[NMR paper] A new combined computational and NMR-spectroscopical strategy for the identification
A new combined computational and NMR-spectroscopical strategy for the identification of additional conformational constraints of the bound ligand in an aprotic solvent.
Related Articles A new combined computational and NMR-spectroscopical strategy for the identification of additional conformational constraints of the bound ligand in an aprotic solvent.
Chembiochem. 2000 Oct 2;1(3):181-95
Authors: Siebert HC, André S, Asensio JL, Cañada FJ, Dong X, Espinosa JF, Frank M, Gilleron M, Kaltner H, Kozár T, Bovin NV, von Der Lieth CW, Vliegenthart JF,...
Identification of PTP1B and ?-Glucosidase Inhibitory Serrulatanes from Eremophila spp. by Combined use of Dual High-Resolution PTP1B and ?-Glucosidase Inhibition Profiling and HPLC-HRMS-SPE-NMR.
Linear Mode
