5 research outputs found
Supplementary table: Eliminating drug target interference withspecific antibody or its F(ab?)2 fragment inthe bridging immunogenicity assay
Background: DB-1003 is a humanized anti-IgE monoclonal antibody with higher affinity than omalizumab. In the affinity capture elution (ACE)-based bridging electrochemiluminescent immunoassay (ECLIA) for antibodies to DB-1003, monkey serum IgE caused false-positive results. Materials & methods: The target specific antibody or its F(ab?)2 fragment was used to mitigate drug target interference in an ACE-based bridging ECLIA for the detection of anti-DB-1003 antibodies. Results: The sensitivity of the developed assay was at least 100 ng/ml. When the ADA concentration was 250 ng/ml, the assay tolerated at least 20.0 ÎĽg/ml of the monkey IgE. Conclusion: Incorporating the target-specific antibody or its F(ab?)2 mfragment can overcome the interference from monkey serum IgE in ACE-based bridging ECLIA for anti- DB-1003 antibody detection.</p
Transcriptomic and Metabonomic Profiling Reveal Synergistic Effects of Quercetin and Resveratrol Supplementation in High Fat Diet Fed Mice
Dietary quercetin and resveratrol have been frequently
used in treating various diseases, but the underlying mechanisms are
not entirely clear. Here, we report combined transcriptomic and metabonomic
profiling that showed that the combined supplementation with quercetin
and resveratrol produced synergistic effects on a high-fat diet-induced
metabolic phenotype in mice. Histological and phenotypic improvements
in serum and hepatic total cholesterol, insulin, fasting blood glucose,
and HbA1c were also observed in mice receiving combined quercetin
and resveratrol supplementation. This combined quercetin and resveratrol
supplementation resulted in significant restoration of gene sets in
functional pathways of glucose/lipid metabolism, liver function, cardiovascular
system, and inflammation/immunity, which were altered by high fat
diet feeding. The integration of transcriptomic and metabonomic data
indicated quercetin and resveratrol supplementation enhanced processes
of glycolysis and fatty acid oxidation, as well as suppressed gluconeogenesis.
These alterations discovered at both the transcriptional and metabolic
levels highlight the significance of combined “omics”
platforms for elucidating mechanistic pathways altered by dietary
polyphenols, such as quercetin and resveratrol, in a synergistic manner
Transcriptomic and Metabonomic Profiling Reveal Synergistic Effects of Quercetin and Resveratrol Supplementation in High Fat Diet Fed Mice
Dietary quercetin and resveratrol have been frequently
used in treating various diseases, but the underlying mechanisms are
not entirely clear. Here, we report combined transcriptomic and metabonomic
profiling that showed that the combined supplementation with quercetin
and resveratrol produced synergistic effects on a high-fat diet-induced
metabolic phenotype in mice. Histological and phenotypic improvements
in serum and hepatic total cholesterol, insulin, fasting blood glucose,
and HbA1c were also observed in mice receiving combined quercetin
and resveratrol supplementation. This combined quercetin and resveratrol
supplementation resulted in significant restoration of gene sets in
functional pathways of glucose/lipid metabolism, liver function, cardiovascular
system, and inflammation/immunity, which were altered by high fat
diet feeding. The integration of transcriptomic and metabonomic data
indicated quercetin and resveratrol supplementation enhanced processes
of glycolysis and fatty acid oxidation, as well as suppressed gluconeogenesis.
These alterations discovered at both the transcriptional and metabolic
levels highlight the significance of combined “omics”
platforms for elucidating mechanistic pathways altered by dietary
polyphenols, such as quercetin and resveratrol, in a synergistic manner
Transcriptomic and Metabonomic Profiling Reveal Synergistic Effects of Quercetin and Resveratrol Supplementation in High Fat Diet Fed Mice
Dietary quercetin and resveratrol have been frequently
used in treating various diseases, but the underlying mechanisms are
not entirely clear. Here, we report combined transcriptomic and metabonomic
profiling that showed that the combined supplementation with quercetin
and resveratrol produced synergistic effects on a high-fat diet-induced
metabolic phenotype in mice. Histological and phenotypic improvements
in serum and hepatic total cholesterol, insulin, fasting blood glucose,
and HbA1c were also observed in mice receiving combined quercetin
and resveratrol supplementation. This combined quercetin and resveratrol
supplementation resulted in significant restoration of gene sets in
functional pathways of glucose/lipid metabolism, liver function, cardiovascular
system, and inflammation/immunity, which were altered by high fat
diet feeding. The integration of transcriptomic and metabonomic data
indicated quercetin and resveratrol supplementation enhanced processes
of glycolysis and fatty acid oxidation, as well as suppressed gluconeogenesis.
These alterations discovered at both the transcriptional and metabolic
levels highlight the significance of combined “omics”
platforms for elucidating mechanistic pathways altered by dietary
polyphenols, such as quercetin and resveratrol, in a synergistic manner
High-Indexed Pt<sub>3</sub>Ni Alloy Tetrahexahedral Nanoframes Evolved through Preferential CO Etching
Chemically
controlling crystal structures in nanoscale is challenging,
yet provides an effective way to improve catalytic performances. Pt-based
nanoframes are a new class of nanomaterials that have great potential
as high-performance catalysts. To date, these nanoframes are formed
through acid etching in aqueous solutions, which demands long reaction
time and often yields ill-defined surface structures. Herein we demonstrate
a robust and unprecedented protocol for facile development of high-performance
nanoframe catalysts using size and crystallographic facet-controlled
PtNi<sub>4</sub> tetrahexahedral nanocrystals prepared through a colloidal
synthesis approach as precursors. This new protocol employs the Mond
process to preferentially dealloy nickel component in the ⟨100⟩
direction through carbon monoxide etching of carbon-supported PtNi<sub>4</sub> tetrahexahedral nanocrystals at an elevated temperature.
The resultant Pt<sub>3</sub>Ni alloy tetrahexahedral nanoframes possess
an open, stable, and high-indexed microstructure, containing a segregated
Pt thin layer strained to the Pt–Ni alloy surfaces and featuring
a down-shift d-band center as revealed by the density functional theory
calculations. These nanoframes exhibit much improved catalytic performance,
such as high stability under prolonged electrochemical potential cycles,
promoting direct electro-oxidation of formic acid to carbon dioxide
and enhancing oxygen reduction reaction activities. Because carbon
monoxide can be generated from the carbon support through thermal
annealing in air, a common process for pretreating supported catalysts,
the developed approach can be easily adopted for preparing industrial
scale catalysts that are made of Pt–Ni and other alloy nanoframes