An object of the present invention is to provide an immunopotentiating agent for reducing Tregs (in particular, effector Tregs) and potentiating tumor immunity or infection immunity. Imatinib and/or a salt thereof has the action of reducing Tregs (in particular, effector Tregs) and potentiating tumor immunity or infection immunity, and can be used as an active ingredient for the immunopotentiating agent.

Provided herein are methods and compositions for single cell characterization using affinity-oligonucleotide conjugates. Provided herein are methods and compositions for single cell characterization using tetramer-oligonucleotide conjugates.

Devices, systems and methods detect latent HIV in a patient on anti-retroviral therapy (ART), the method comprising using optical scanning to identify in a cell sample of the patient Gag+CD4 downregulated cells as in indication of latent HIV.

There is provided methods of determining tuberculosis (TB) infection status in an individual comprising: (i) providing a sample comprising T-cells; (ii) exposing the sample of (i) to one or more TB antigens; (iii) identifying T-cells in the sample that are CD4 positive and (a) secrete TNF-α without secreting IFN-γ; or (b) secrete IFN-γ without secreting TNF-α; (iv) identifying those cells of (iii) which are also CCR7 and, CD127 negative; and optionally (v) calculating the cells identified in (iv) as a percentage of those identified in (iii); wherein the identification of cells in (iv) and/or the percentage of T-cells calculated in (v) correlates to TB infection status of the individual, and wherein steps (iii) and (iv) can be carried out either sequentially or simultaneously. There are also provided compositions and kits for use in such methods.

Compositions that include extracts from sources of immune modulators that include nanofraction immune modulator molecules (i.e., molecules having molecular weights of about 3,000 Da and less) are disclosed. These compositions may also include other immune modulators, such as transfer factor. Administration of compositions with extracts that include nanofraction immune modulator molecules modulates the cell-mediated immunity (e.g., down-regulates undesired T cell activity) of a subject to which such compositions are administered. When administered with transfer factor, the combination of nanofraction immune modulator molecules and transfer factor down-regulates undesired T cell activity while increasing, or up-regulating, T cell activity against pathogens and other undesirable entities, such as cancer cells and other aberrant or mutated cells. Assays and assay techniques for evaluating the immune modulation capabilities of various substances are also disclosed.

The disclosure provides methods of determining patient populations amenable or suitable for immunomodulatory treatment of disease such as cancer by measuring the relative or absolute levels of T-cell sub-populations correlated with disease such as cancer.

T cell surface marker, CRTH2, is a target for treating Postural Orthostatic Tachycardia Syndrome, a hemodynamic abnormality. Targeting CRTH2 permits control of disease symptoms in POTS, for which no FDA approved treatment is currently available. Cell surface expression on certain T cell subsets characterizes the syndrome. Cell surface expression can be conveniently determined in plasma samples using flow cytometry.

Provided herein are antibodies, or antigen binding portions thereof, that bind to OX40. Also provided are uses of these proteins in therapeutic applications, such as in the treatment of cancer. Further provided are cells that produce the antibodies, polynucleotides encoding the heavy and/or light chain variable region of the antibodies, and vectors comprising the polynucleotides encoding the heavy and/or light chain variable region of the antibodies.

Compositions and methods for fluorescence activated cell analysis of blood cell populations.

The disclosure provides, inter alia, breast cancer biomarkers, methods of detecting exhausted CD8+ T cells in breast cancer patients, methods of detecting CD26+CD4+ T cells in breast cancer patients, methods of treating breast cancer patients, and methods of identifying risk outcomes for breast cancer patients.