Cell Based Assay

Cell-based assays use live cells to offer a biologically relevant model one can use to track dynamic variables or functional or biochemical effects of cells and their behavior. RayBiotech can provide a full range of cell-based assays. Our team has expertise with primary cells and transformed cell lines. We are able to develop and validate custom cell-based assays to the clients needs and in line with all relevant regulatory guidelines and recommendations.

CRO Services

PBMC Processing
In Vitro Cell Culture
Flow Cytometry

PBMC Processing

Human peripheral blood mononuclear cells (PBMCs) are peripheral blood cells having a single round nucleus including lymphocytes, monocytes, natural killer cells (NK cells) or dendritic cells (DCs). PBMCs are isolated from blood based on its gravity different from other blood cells, e.g. red blood cells and granulocytes. Because PBMCs contain the most important immune cells responding to foreign challenges, especially lymphocytes, they are widely used in immune research in vitro. Either PBMCs from normal donors or from diseased individuals are used to investigate phenotypes of different immune cells at physiological or pathological conditions, the data of which can be used for diagnosis of certain diseases including infectious disease, autoimmune disease, etc. PBMCs are also used to enrich a specific type of immune cells e.g. T cells, B cells or monocytes, so that scientists can observe their functions at different conditions. In vitro stimulation of PBMCs with various of agents, which mimics a immune response, is widely used a model to investigate the mechanism of T cell or B cell activation, and to find ways to enhance “good” immune response, e.g. anti-viral infection immune response, and inhibit “bad immune response, e.g. autoimmune disease.

In Vitro Cell Culture

RayBiotech’s team of scientists have the advanced level of knowledge and skill that is required for the complexity involved in live cell analysis.

  • Dedicated in vitro cell culture core
  • Cell processing and sample aliquoting
  • Custom cell culture including primary explants and optimizing expression of a cell line or development of optimum medium or treatment regimes
  • Cell surface assays and intracellular assays are available

Flow Cytometry

Flow cytometry is a powerful technology that can simultaneously measure multiple parameters on hundreds of individual cells per second. We have a wide range of experience in developing and validating assays including

  • Immunophenotyping
  • Phosphorylation of proteins
  • Intracellular and cell surface antigens
  • Cell proliferation
  • Toxicity
  • Apoptosis
  • Cellular activation
  • Key Instrumentation: BD FACScelesta

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