The invention relates, in part, to compounds, compositions, and methods to reduce infectivity of virus particles and to treat viral infections in subjects.

The invention relates, in part, to compounds, compositions, and methods to reduce infectivity of virus particles and to treat viral infections in subjects.

Provided herein are modified FVII polypetides, and modified FVIIa polypeptides, and methods of treatment of acute and episodic bleeding with modified FactorVIIa polypeptides. To effect treatment and use, in some embodiments, the modified polypeptides are subcutaneously administered to provide on-demand treatment. In some embodiments, the on-demand treatment is provided in a multiple dosing regimen over a twenty-four hour period. The subcutaneous administration of the modified polypeptides of the disclosure exhibit increased coagulant activity, potency, bioavailablilty and prolonged duration.

Provided herein are methods of killing or reducing the number of naturally-occurring and/or treatment-induced senescent cells and diseased cells in a subject in need thereof, decreasing the accumulation of naturally-occurring and/or treatment-induced senescent cells and diseased cells in a subject in need thereof, that include administering to the subject a therapeutically effective amount of one or more common gamma-chain family cytokine receptor activating agent(s) and/or one or more agent(s) that result(s) in a decrease in the activation of a TGF-β receptor.

The present invention provides methods of administering long-acting Factor IX; methods of administering long-acting, chimeric and hybrid polypeptides comprising Factor IX; and methods of producing such chimeric and hybrid polypeptides using cells.

The present invention provides methods of administering long-acting Factor IX; methods of administering long-acting, chimeric and hybrid polypeptides comprising Factor IX; and methods of producing such chimeric and hybrid polypeptides using cells.

The present invention relates to single domain antibodies (sdAbs) against TREM (triggering receptors expressed on myeloid cells) like transcript-1 (TLT-1) molecules that are present on activated platelets at the site of an injury, and especially on a subset of activated platelets, coated platelets. Furthermore, the present invention relates to fusion proteins comprising sdAbs against TLT-1 and an extracellular (soluble) domain of tissue factor (sTF), to direct targeting of such fusion proteins to activated platelets at the site of injury through binding of the sdAbs to TLT-1, a membrane protein receptor that is only present on activated platelets. Specific interaction of sdAbs with the TLT-1 receptor positions the sTF domain of the fusion to interact with, and activate, FVII. As a result, a targeted procoagulant effect is achieved at the site of injury via activated platelets. The fusion proteins are useful to treat individuals that have a bleeding disorder, such as hemophilia A, hemophilia B, or acute bleeding due to traumatic injury.

The present disclosure relates to a class of engineered polypeptides having a binding affinity for programmed death-ligand 1 (PD-L1), and provides a PD-L1 binding polypeptide comprising the sequence ERNX.sub.4AAX.sub.7EIL X.sub.11LPNLX.sub.16X.sub.17X.sub.18QX.sub.20 WAFIWX.sub.26LX.sub.28D. The present disclosure also relates to the use of such a PD-L1 binding polypeptide as a therapeutic, prognostic and/or diagnostic agent.

The present disclosure relates to a class of engineered polypeptides having a binding affinity for programmed death-ligand 1 (PD-L1), and provides a PD-L1 binding polypeptide comprising the sequence ERNX.sub.4AAX.sub.7EIL X.sub.11LPNLX.sub.16X.sub.17X.sub.18QX.sub.20 WAFIWX.sub.26LX.sub.28D. The present disclosure also relates to the use of such a PD-L1 binding polypeptide as a therapeutic, prognostic and/or diagnostic agent.

Provided is a method for purifying α-thrombin and for quantifying α-thrombin and its degradation polypeptides in a liquid proteinatious solution. The method employs a one-step anion exchange chromatography method. The method allows purification and/or quantification of a homogenous post-translationally modified α-thrombin. The method can also be used for purification and/or quantification of β-thrombin.