Immortalized Rhesus macaque Bcl-6/Bcl-xL Stable B Cell Lines as Tools for HIV Antibody Discovery

Scientists at NIAID have developed two immortalized stable B cell lines from rhesus macaques that can have value as research tools for the discovery of neutralizing antibodies of simian origin against HIV and that may have value in the development of an HIV vaccine. These B cell lines encode human Bcl-6 and Bcl-xL proteins, which are major regulators of apoptosis. These B cell lines are derived from the lymph node of a rhesus macaque (RM) that was infected with SHIV.CH505.

TSLP Induces Neutrophil-mediated Killing of Methicillin-resistant Staphylococcus Aureus (MRSA)

This technology includes the use of thymic stromal lymphopoetin (TSLP) for the treatment of MRSA. Our studies show that mouse neutrophils express the TSLP receptor, TSLPR, and that TSLP protein is increased during cutaneous MRSA infection. Using in vitro MRSA whole blood killing assays, we show that TSLP acts on mouse neutrophils to enhance MRSA killing. In an in vivo MRSA intradermal ear infection, TSLPR-deficient mice exhibit increased MRSA burden compared to wild-type mice.

Method to Detect and Quantify In Vivo Mitophagy

This technology includes a transgenic reporter mouse that expresses a fluorescent protein called mt-Keima, to be used to detect and quantify in vivo mitophagy. This fluorescent protein was originally described by a group in Japan and shown to be able to measure both the general process of autophagy and mitophagy. We extended these results by creating a living animal so that we could get a measurement for in vivo mitophagy. Our results demonstrate that our mt-Keima mouse allows for a straightforward and practical way to quantify mitophagy in vivo.

Device for Closure of Transvascular or Transcameral Access Ports

This technology includes part of transcatheter aortic valve replacement and to enable non-surgical thoracic aortic aneurysm endograft repair. The invention enables a completely new way to access the arterial circulation to allow introduction of large devices, such as transcatheter aortic valve replacement, percutaneous left ventricular assist devices, and thoracic aortic endografts. It also can be used in most labeled and off-label applications of Amplatzer (AGA Medical, St Jude) nitinol occluder devices to occlude intracardiac holes and to allow non-surgical direct access to the heart.

Epstein-Barr Virus (EBV)-feeder Cell Line

This technology includes irradiated Epstein-Barr virus-transformed lymphoblastoid cell lines (EBV-LCL) as feeder cells for the ex vivo expansion of natural killer (NK) cells. EBV-LCL feeder cells, altered by radiation to prevent uncontrolled growth, provide a supportive environment for NK cells to multiply effectively. This method addresses the challenge of obtaining sufficient quantities of functionally active NK cells, which are crucial components of the immune system known for their ability to target and destroy tumor cells and virally infected cells.

Antibody to Mitochondrial Uniporter (MCU

This technology includes a generated polyclonal antibody in rabbit that detects the mitochondrial uniporter (MCU) protein. This antibody was created by immunizing rabbits with a synthesized sequence of the MCU protein and can be used to identify and quantify MCU protein in various tissues. The polyclonal nature of the antibody ensures it recognizes multiple epitopes on the MCU, enhancing detection reliability. This technology is crucial for understanding MCU's role in mitochondrial function and mammalian physiology.

A Method to Remove Fluid-motion Related Artifacts in Magnetic Resonance Thermometry Images Using Magnetic Field Gradients

This technology includes the incorporation of a magnetic field gradient waveform (consisting of two or more pulses) between excitation and encoding to eliminate signal from moving fluid for imaging applications. Proton Resonance Frequency (PRF) thermometry is a widely used Magnetic Resonance Imaging (MRI) based technique to monitor changes in tissue temperature in response to thermal therapy. The use of PRF thermometry with thermal therapy procedures is indispensable to ensure delivery of desired thermal dose to the target tissue, and to minimize unintended damage to the normal tissue.