The disclosure provides compositions and methods that make use of a target protein that is capable of binding to a small molecule in order to form a complex, and a binding member that specifically binds to the complex, wherein the target protein is derived from a non-human protein and the small molecule is an inhibitor of the non-human protein. The non-human protein may be derived from a viral, bacterial, fungal or protozoal protein. These compositions and methods permit the controlled interaction of polypeptides that are individually fused to the target protein and binding member, respectively, and can be used to control the activity of dimerization-inducible proteins such as split transcription factors and split chimeric antigen receptors through the addition of the small molecule. The disclosure provides expression vectors, binding members, dimerization-inducible proteins, nucleic acids, cells, viral particles, kits, systems and methods that involve these components.

An embodiment provides a method for treating a body fluid of a patient, including: removing the body fluid from a patient; applying a treatment to the body fluid, wherein the treatment comprises an antibody that joins with an aging process targeted antigen (TA) in the body fluid to form an antibody-TA complex, wherein the antibody comprises a tag sensitive to an illumination; removing the antibody-antigen complex from the body fluid; and returning the body fluid to the patient. Other aspects are described and claimed.

An antibody that binds a glycosylated protein is disclosed, wherein the glycosylation comprises the glycan motif Fucα1-2Galβ1-3GlcNAcβ1-3Galβ1 or Fucα1-2Galβ1-3GlcNAc. Antibodies that are cytotoxic against undifferentiated pluripotent cells are also disclosed.

An antibody that binds a glycosylated protein is disclosed, wherein the glycosylation comprises the glycan motif Fucα1-2Galβ1-3GlcNAcβ1-3Galβ1 or Fucα1-2Galβ1-3GlcNAc. Antibodies that are cytotoxic against undifferentiated pluripotent cells are also disclosed.

The presently-disclosed subject matter relates to crosslinkers, compositions, and methods for trapping a target of interest on a substrate of interest. The methods may be used to inhibit and treat pathogen infection and provide contraception. The methods may be used to trap or separate particles and other substances. The subject matter further relates to methods of identifying and preparing optimal crosslinkers and methods for manipulating targets of interest.

The presently-disclosed subject matter relates to crosslinkers, compositions, and methods for trapping a target of interest on a substrate of interest. The methods may be used to inhibit and treat pathogen infection and provide contraception. The methods may be used to trap or separate particles and other substances. The subject matter further relates to methods of identifying and preparing optimal crosslinkers and methods for manipulating targets of interest.

The disclosure is directed to a polyclonal antibody composition comprising a heterologous population of mammalian antibodies capable of specifically binding to tenofovir or a tenofovir derivative in a sample. Methods and assays for detecting tenofovir or a tenofovir derivative in a sample using the polyclonal antibody composition also are provided.

The disclosure is directed to a polyclonal antibody composition comprising a heterologous population of mammalian antibodies capable of specifically binding to tenofovir or a tenofovir derivative in a sample. Methods and assays for detecting tenofovir or a tenofovir derivative in a sample using the polyclonal antibody composition also are provided.

An anti-8-OHdG antibody and an antibody fragment thereof, with which 8-hydroxy-2′-deoxyguanosine (8-OHdG) in a specimen, particularly urine, can be accurately analyzed, and a measuring method capable of measuring 8-OHdG in a specimen, particularly urine, with high sensitivity are provided. An anti-8-OHdG antibody or an antibody fragment thereof which reacts specifically with 8-OHdG and substantially does not react with urea; the antibody or antibody fragment thereof in which the complementarity-determining regions of the variable regions of heavy and light chains are specific amino acid sequences; and a measuring method for 8-OHdG in a specimen using the antibody or antibody fragment thereof are disclosed.

DNA-targeted nanocarriers for encapsulating an active agent and delivering it to extracellular DNA are provided. The nanocarriers, for example, polymeric particles, liposomes, and multilamellar vesicles have targeting moiety that targets DNA conjugated thereto. The targeting moiety that targets DNA is typically an antibody, or variant, fragment, or fusion protein derived therefrom that binds to DNA or nucleosomes. The targeting moiety can be a circulating autoantibody that binds DNA such as those commonly found in patients with SLE. In some embodiments, the targeting moiety is antibody 3E10 or a variant, fragment, or fusion protein derived therefrom. Pharmaceutical compositions, methods of use, and dosage regimens are also provided.