Leland Stanford Junior University

University Health Network

Nodality, Inc.

Omar D Perez

Garry P Nolan

Jonathan M Irish

Helen Louise Francis-Lang

Wendy Fantl

Santosh K Putta

Aileen Cohen

Kathy Siminovitch

Edward Keystone

Carole Galligan

Vivian Bykerk

Eleanor Fish

This invention is directed to methods and compositions for diagnosis, prognosis and for determining methods of treatment. The physiological status of cells present in a sample (e.g. clinical sample) can be used in diagnosis or prognosis of a condition (e.g. Chronic Lymphocytic Leukemia), in patient selection for therapy, to monitor treatment and to modify or optimize therapeutic regimens. The physiological status of a cell can be determined by comparing the intracellular status of one or more activation elements (e.g. the phosphorylation status of a signaling molecule) in a cell (e.g. a cancer cell) to that of another cell (e.g. a normal cell). The physiological status of a cell can be further classified by adding one or more modulators (e.g. an inhibitor or activator) to the cell in question. In some embodiments, the invention is directed to methods of determining a phenotypic profile of a population of cells.

Methods for diagnosis, prognosis and methods of treatment

The invention provides methods and compositions for simultaneously detecting the activation state of a plurality of proteins in single cells using flow cytometry. The invention further provides methods and compositions of screening for bioactive agents capable of coordinately modulating the activity of a plurality of proteins in single cells. The methods and compositions can be used to determine the protein activation profile of a cell for predicting or diagnosing a disease state, and for monitoring treatment of a disease state.

Methods and compositions for detecting receptor-ligand interactions in single cells

Methods and compositions for detecting the activation state of multiple proteins in single cells

The present invention provides an approach for the simultaneous determination of the activation states of a plurality of proteins in single cells. This approach permits the rapid detection of heterogeneity in a complex cell population based on activation states, and the identification of cellular subsets that exhibit correlated changes in activation within the cell population. Moreover, this approach allows the correlation of cellular activities or properties. In addition, the use of potentiators of cellular activation allows for characterization of such pathways and cell populations.

Methods and compositions for risk stratification

The invention provides a novel cell that is a precursor of a fibroblast-like synovial cell. The novel cell is a circulating synovial tissue cell that stains positive for collagen, CD34, CD45, prolyl 4-hydroxylase and CD14. The invention also relates to methods of diagnosing or monitoring rheumatoid arthritis and/or osteoarthritis using gene expression profiles, protein expression profiles, and/or protein phosphorylation profiles of different cell types, including the novel precursor, CD3+ cells, synovial tissue fibroblast-like synovial cells and fibrocytes. The invention also includes methods to identify substances to treat or prevent rheumatoid arthritis and/or osteoarthritis.

Methods of diagnosing and treating rheumatoid arthritis and osteoarthritis

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San Francisco, CA, United States of America

Omar D Perez