Sensitive Method for Detection and Quantification of Anthrax, Bordetella pertussis, Clostridium difficile, Clostridium botulinum and Other Pathogen-Derived Toxins in Human and Animal Plasma

CDC research scientists have developed a method to identify and quantify the activity of pathogenic bacterial adenylate cyclase toxins by liquid chromatography tandem mass spectrometry (LC-MS/MS). Bacterial protein toxins are among the most potent natural poisons known, causing paralysis, immune system collapse, hemorrhaging and death in some cases.

Improved Botulism, Botulinum Neurotoxin Type-E Diagnostics

CDC researchers have improved upon a prior, HHS patented mass spectrometry-based Endopep-MS assay that is able to rapidly detect and differentiate all seven botulinum neurotoxin (BoNT) types A to G. This current improvement comprises the addition of two optimized substrate peptides that increases the assay's sensitivity,relative to prior substrates, for botulinum neurotoxin type-E (BoNT/E) by greater than 100 fold.

Multiplexing Homocysteine in Primary Newborn Screening Assays Using Maleimides as Select Derivatization Agents

Homocystinuria (HCU), a group of inherited disorders, causes symptoms ranging from failure to thrive and developmental delays in infants or young children to abnormal blood clots with onset in adults.1 Approximately 1 in 200,000 to 335,000 people have HCU globally.2

An Automated System for Myocardial Perfusion Mapping and Machine Diagnosis to Detect Ischemic Heart Disease with First-pass Perfusion Cardiac Magnetic Resonance Imaging

This technology includes a fully automated computer aided diagnosis system to quantify myocardial blood flow (MBF) and myocardial perfusion reserve (MPR) pixel maps from the first-pass contrast-enhanced cardiac magnetic resonance (CMR) perfusion images. This system performs automated image registration, motion compensation, segmentation, and modeling to extract quantitative features from different myocardial regions of interest.

Anti-Puromycin Antibodies Illuminate the World of Cellular Protein Translation

The Ribopuromycylation (RPM) technology, developed by Dr. Jon Yewdell and Dr. Alexandre David, offers a powerful and universal method for visualizing and studying protein translation within cells. RPM involves the use of puromycin, a molecule that mimics a tyrosyl-tRNA and terminates translation by becoming covalently incorporated into the nascent protein chain's C-terminus within the ribosome's A site. This technique enables the immobilization of puromycylated nascent protein chains on ribosomes when chain elongation inhibitors like cycloheximide or emetine are utilized.

Resolution Doubling with Digital Confocal Microscopy

This technology includes a microscopy method that reduces the speed penalty at least 1000-fold, while retaining resolution improvement. A Digital mirror device (DMD) or sweptfield confocal unit is used to create hundreds to thousands of excitation foci that are imaged to a sample mounted in a conventional microscope and record the resulting emissions on an array detector. Detection of each confocal spot is done in our proprietary software, as is the processing and deconvolution that is used for a 2x resolution enhancement.

Encapsulation of Fluorescent Nanodiamonds into Poly-dopamine (PDA) Shell and Further Covalent Functionalization of the PDA Shell for Diagnostic Imaging Applications

This technology includes a new class of nanoparticles in the carbon family, fluorescent nanodiamonds (FNDs), exhibiting superb physical and chemical properties for diagnostic imaging applications. We have developed a simple, fast, and robust method to encapsulate FNDs in polydopamine that can be further functionalized. By integrating anatomical and molecular based imaging capabilities, multimodal nanoparticle probes are becoming important in the paradigm shift from conventional to future imaging technologies.

Vascularized Thyroid-on-a-Chip for Personalized Drug Screening and Disease Modeling

This technology includes a micro-engineered “thyroid-on-a-chip” that combines human thyroid organoids with integrated micro-vasculature to replicate the gland’s native blood flow and 3-D architecture, enabling rapid, patient-specific drug screening. By permitting real-time perfusion of nutrients, hormones, and immune cells, the platform yields more physiologically relevant data than conventional static cultures or animal surrogates.

Micropatterning of Extracellular Matrix Proteins Using Microphoto-ablation Of Poly vinyl Alcohol (PVA) Monolayers

Available for licensure and commercial development is a micro-photoablation (µPA) method used as a micro-patterning technique to attach ECM proteins or other biological molecules to specified locations. Advantages of this photolytic technique are that it: (a) is stampless, (b) allows for flexible pattern generation to the submicron level, (c) allows for live cell fluorescence imaging, retains cell viability, and (d) allows the use of multiple proteins.

Method for Finding Usable Portion of Sigmoid Curve (the Taylor Method), Improved Assay Readouts, and Enhanced Quality Control/Assurance

CDC researchers have developed algorithmic methods for determining sigmoid curve optimums and calculating component concentrations. Sigmoid curves are commonly generated in bioassays and used to calculate results. Various techniques have been used to define the curve, analyze the observations, and calculate a concentration. This technology is an algorithmic approach to identifying the usable portion of a sigmoid curve.
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