Camel VHH Nanobodies Bind the S2 Subunit of SARS-CoV-2 and Broadly Neutralize Variants including Omicron
Since its emergence in 2019, COVID-19 infected over 600 million people and over 6 million people have died from the disease. COVID-19 is an infectious disease caused by the SARS-CoV-2 virus. Neutralizing antibodies have been developed to bind to the receptor binding domain (RBD) on the spike (S) protein. Blocking the interaction of the RBD and the ACE2 receptor, is critical in neutralizing the virus. However, the S2 subunit, is also critical for viral infection and entry into human cells.
Topoisomerase III (TOP3) Inhibitors as Antiviral and Anticancer Compounds based on Bisacridines
- Topoisomerase 3B (TOP3B) is the only topoisomerase that can act on RNA as well as DNA. Thus, it is a target of interest for the development of cancer therapies and RNA viral infection therapies. TOP3B is not an essential gene for carcinogenesis, but a subset of cancer cells with pre-existing genome instability are particularly vulnerable to the inactivation of TOP3B. While inhibitors for other topoisomerases are among the most potent and widely used anticancer agents, there are no known inhibitors of TOP3B.
Method for Assembling Decellularized Tissue Extracellular Matrix in 3D Tumor Spheroids
Cell culture investigations using spheroids and organoid models have had a major impact on biomedical advancement as alternative sources for costly, in vivo animal testing. However, these 3-D cell constructs are limited in that they do not integrate extracellular components within the structure important for more reliable and accurate biological responses. Extracellular matrix (ECM) from decellularized tissues provide a physical scaffolding and offers crucial biochemical and biomechanical cues for cellular constituents.
Methods of Determining Homeostatic Perturbations
Biological homeostasis is a state of steady internal, physical, and chemical conditions maintained by a living organism observed at the cellular level. Biological homeostasis can vary in order to alter the cellular physical and chemical conditions.
Novel Small Molecule Inhibitors of Tyrosyl-DNA Phosphodiesterase 1 (TDP1) for Treatment of Solid Tumors
Topoisomerase 1 (TOP1) is an essential enzyme that plays a critical role in DNA transcription and replication. TOP1 inhibitors are a known class of anti-cancer agents that work to interrupt DNA replication in cancer cells, causing cell death. Since the discovery of the TOP1 inhibitor camptothecin (CPT) from plant extracts more than 60 years ago, two CPT analogs (irinotecan and topotecan) were approved by the FDA for cancer treatment. Tyrosyl-DNA phosphodiesterase 1 (TDP1) is an enzyme involved in DNA repair created when TOP1 is inhibited.
Single Domain Antibodies Targeting the S2 Subunit of SARS-CoV-2 Spike Protein
The COVID-19 pandemic is a worldwide public health crisis with over 100 million confirmed cases and 2.4 million deaths as of February 2021. COVID-19 is caused by a novel coronavirus called SARS-CoV-2. Almost all the neutralizing antibodies targeting SARS-CoV-2 that are in development recognize the receptor binding domain (RBD) on the spike (S) protein. Blocking the interaction of RBD and the ACE2 receptor on human cells is the first of the two critical steps for neutralization of the virus.
La Protein as a Novel Regulator of Osteoclastogenesis
Millions of patients in the United States are afflicted by a host of bone diseases caused by osteoclast (specialized calls arising from the macrophage/monocyte lineage) dysfunction. Diseases include Paget’s disease, osteoporosis, fibrous dysplasia and osteolytic bone metastasis. The current standard of care for these diseases uses broad-spectrum therapies that either coat the skeletal system or inhibit osteoclast development in an effort to modulate osteoclastogenesis.
Nanobodies Neutralizing Lassa Virus
Lassa Hemorrhagic Fever (LHF) is a serious disease caused by infection with Lassa virus (LASV) – highly prevalent in West Africa and spreading globally. LASV is associated with high morbidity and mortality rates, annually infecting 100,000 to 300,000 individuals and causing 5,000 deaths. Developing prophylactics and treatment for LASV is difficult due to challenges in inducing neutralizing antibodies and producing their target, the LASV glycoprotein trimer (GPC).
Tamperless Tensor Elastography Imaging
Measuring and mapping nervous tissue microstructure noninvasively is a long sought-after goal in neuroscience. Several neuropathologies – such as cancer and stroke – are associated with changes in tissue microstructure. Changes in material properties, such as stiffness, represent a sensitive measure of