Devices for Improved Tissue Cryopreservation and Recovery

Problem: Cryopreservation is a process where living biological materials like cells, tissues, and cell therapies (which are susceptible to damage caused by unregulated chemical kinetics) are preserved by cooling to very low temperatures in the presence of specific cryopreservation media that protects the biological material from damage. In order to be used, the biological material ideally should be thawed in a controlled manner that minimizes damage and desirably brings the material back to a viable state.

Tissue Clamp for Repeated Opening and Closure of Incisions/Wounds

Medical clamps currently available are not efficient nor are they sufficiently precise in closure and alignment of the edges of an incision or wound. Many available designs are difficult to use and handle, especially in situations where repeated opening and closure of an incision or wound is required. The functional short-comings of existing clamp designs may result in surgical complications, such as excess loss of fluids and pressure and hemostasis during some procedures.

Novel Methods for Generating Retinal Pigment Epithelium Cells from Induced Pluripotent Stem Cells

The retinal pigment epithelial cells (RPE) make up a polarized monolayer in the vertebrate eye that separates the neural retina from the choroid, and performs a crucial role in retinal physiology by forming a blood-retinal barrier and closely interacting with photoreceptors to maintain visual function.  Many ophthalmic diseases, such as age-related macular degeneration, are associated with a degeneration or deterioration of the RPE. 

Fluorescent Primer(s) Creation for Nucleic Acid Detection and Amplification

CDC researchers have developed technology that consists of a simple and inexpensive technique for creating fluorescent labeled primers for nucleic acid amplification. Fluorescent chemical-labeled probes and primers are extensively used in clinical and research laboratories for rapid, real-time detection and identification of microbes and genetic sequences. During nucleic acid amplification, the "UniFluor" primer is incorporated into newly synthesized double stranded DNA.

Photoinduced Electron Transfer Fluorescent Primer for Nucleic Acid Amplification

CDC scientists have developed a rapid and cost-efficient method for generating fluorescently labeled primers for PCR and real-time PCR. At present, fluorescent primers are useful for detecting and identifying microbes and specific nucleic acid sequences, amplifying nucleic acids for pyro-sequencing, determining the levels of gene expression, and many other uses. However, problems exist with current techniques used to create fluorescent primers. For one, labeling is not one hundred percent efficient, leading to inaccurate results.

Virus Replicon Particles as Rift Valley Fever Vaccines

Rift Valley fever (RVF) virus primarily infects animals but also has the capacity to infect humans. The disease causes abortion and death among RVF-infected livestock, resulting in substantial economic loss to people living in many parts of Africa and Arabian Peninsula. Currently, there is no commercial vaccine for RVF. CDC scientists have developed a RVF virus replicon particle (VRP) vaccine candidate.

A Bias-free Sampling and Collection Trap for Resting Mosquitoes

This CDC developed collection device is a small (approximately 1 cubic foot) open-sided container that attracts mosquitoes seeking a daytime resting location. The container is dark-colored and constructed of molded wood-fiber or recycled, high-density plastic. Mosquitoes that enter the dark space of the container are aspirated through a battery-powered fan into a collection receptacle. The receptacle is especially attractive to Culex and Anopheles mosquitos' vectors of West Nile Virus and malaria parasites, respectively.

Use of Detector Response Curves to Optimize Settings for Mass Spectrometry

This CDC developed optimization technology allows one to characterize the behavior of the coefficient of variation (CV) for a range of mass spectrometer machine settings. Surface-enhanced laser desorption/ionization (SELDI) and matrix-assisted laser desorption/ionization (MALDI) are used for the early detection of numerous diseases, for example cervical cancer . A critical step in the analytical process is the optimization of experiment and machine settings to ensure the best possible reproducibility of results, as measured by the CV.

Multiplexed Immunoassay for Rapid Serological Diagnosis of a Specific Viral Infection in Clinical Samples

CDC researchers have developed a multiplexed diagnostic assay for sensitive detection and distinction between viral group members based on the presence/absence of infection-generated antibodies within a clinical serum sample. For example, this assay can be used for rapid discrimination of a clinical unknown as specifically a West Nile or St. Louis encephalitis viral infection. This is particularly beneficial as these two viruses are typically difficult to distinguish by standard serological assays.

This new technique uses microsphere/microbead-based flow-analysis as a platform.

Species-specific Nucleic Acid Detection Assay for Fungi

This invention pertains to nucleic acid-based assays for the detection of Aspergillus and other filamentous fungi. Assays cover the species-specific detection and diagnosis of infection by Aspergillus, Fusarium, Mucor, Penecillium, Rhizomucor, Absidia, Cunninghamella, Pseudallescheria or Sporthrix in a subject. This can reduce identification time from several days by conventional culture methods to a matter of hours.
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