Publications by authors named "Beth Leary"

Article Synopsis
  • * The workshop featured three Main Workshops and seven Specialized Workshops covering a range of subjects, including biomarker development, mass spectrometry, and innovations in cytometry and reagent generation.
  • * The resulting 2021 White Paper provides recommendations based on workshop discussions to aid the bioanalytical community in enhancing scientific quality and regulatory compliance, with the publication divided into three parts for clarity.
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Tissue factor pathway inhibitor (TFPI) exhibits multiple isoforms, which are known to present in multiple locations such as plasma, endothelium, and platelets. TFPI is an endogenous negative modulator of the coagulation pathway, and therefore, neutralization of TFPI function can potentially increase coagulation activity. A human monoclonal antibody, PF-06741086, which interacts with all isoforms of TFPI is currently being tested in clinic for treating hemophilia patients with and without inhibitors.

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FXa is a recombinant human FXa variant which is currently being evaluated in the clinic for treating intracerebral hemorrhage. The aim of our studies is to investigate overall pharmacokinetics, pharmacodynamics, and distribution of FXa in preclinical species, and to understand its potential implication in human. Pharmacokinetics of FXa was examined using active site probes and the results showed that FXa displayed fast clearance, low volume of distribution, and a very short plasma resident time in mice, rats, and monkeys.

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A comparison of four different ligand-binding assay technology platforms (ELISA, Meso Scale Discovery®, Gyros® and AlphaLISA®) was conducted using quantitative assays for the measurement of a human IgG₁ monoclonal antibody (MAb) in rat serum. The assays used common reagents for Fc-specific measurement to determine total levels of a human IgG MAb drug analyte, and all were fully optimized for use on each platform. Mock MAb study samples were prepared and analyzed using all platforms to assess assay performance.

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Covalent attachment of poly(ethylene glycol) (PEG) to therapeutic proteins has been used to prolong in vivo exposure of therapeutic proteins. We have examined pharmacokinetic, biodistribution, and biophysical profiles of three different tumor necrosis factor alpha (TNF) Nanobody-40 kDa PEG conjugates: linear 1 × 40 KDa, branched 2 × 20 kDa, and 4 × 10 kDa conjugates. In accord with earlier reports, the superior PK profile was observed for the branched versus linear PEG conjugates, while all three conjugates had similar potency in a cell-based assay.

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