B and T cell biology

T cells are central to adaptive immunity and play critical roles in autoimmunity, inflammation, immune tolerance, cancer, and host defense. Understanding how T cells activate, differentiate, proliferate, and interact with antigen-presenting cells is key to characterizing therapeutic mechanisms and predicting clinical efficacy.

At Redoxis, we offer a comprehensive suite of in vitro and ex vivo T cell assays, covering phenotype, function, memory, regulatory capacity, and antigen specificity. Assays can be performed using human PBMCs, mouse splenocytes, or purified T cell subsets, and all platforms are fully customizable based on your research needs.

Investigating Th1, Th2, Th17, Treg, and hybrid T cell subsets

T cell differentiation assays model how naïve CD4⁺ T cells polarize into defined effector subsets under controlled cytokine environments.

What we measure

  • Th1, Th2, Th17, Th22, Th1/Th17, Treg, Th9 differentiation

  • Chemokine receptor patterns (CXCR3, CCR4, CCR6, CCR10)

  • Transcription factors (T-bet, GATA3, RORγt, FoxP3)

  • Cytokine secretion profiles

Readouts

  • Multicolor flow cytometry (standardized gating)

  • Luminex or ELISA cytokine quantification

  • qPCR for lineage-associated genes

Applications

  • Mechanism-of-action in autoimmune diseases

  • Evaluation of biologics and small molecules

  • T cell–directed immunomodulation

  • Treg/Th17 balance studies

Generating and characterizing inducible regulatory T cells

Regulatory T cells (Tregs) are essential for immune tolerance and controlling inflammation. This assay evaluates a compound’s ability to promote or inhibit Treg generation.

What we measure

  • FoxP3 expression

  • IL-10 and TGF-β secretion

  • Treg-associated surface markers

  • Stability of induced Tregs

Applications

  • Tolerance induction therapies

  • Autoimmunity research

  • Inflammation control mechanisms

Functional assessment of Treg-mediated immune regulation

This assay quantifies the ability of Tregs to suppress effector T cell proliferation and cytokine secretion.

What we measure

  • Suppression of CD4⁺ or CD8⁺ Teff proliferation

  • Reduction in pro-inflammatory cytokines

  • Treg:Teff ratio-dependent suppression curves

Readouts

  • CellTrace™ dilution (proliferation index)

  • IFN-γ, IL-2, TNF-α secretion

  • Flow cytometry for activation markers

Applications

  • Drug effects on immune regulation

  • Autoimmunity and transplantation

  • Functional potency of Treg-inducing compounds

Alloreactivity and T cell activation in a physiologically relevant system

MLR assays model how T cells respond to foreign antigens presented by allogeneic dendritic cells or monocytes.

What we measure

  • Alloreactive T cell proliferation

  • Cytokine production (IFN-γ, IL-17, IL-2)

  • Immune suppression or activation by candidate therapeutics

Applications

  • Transplantation and graft rejection modeling

  • Immunomodulatory screening

  • Mixed-population immune activation analysis

Antigen-specific memory T cell responses

Recall assays evaluate how memory T cells respond when re-exposed to a known antigen.

What we measure

  • Antigen-specific T cell proliferation

  • Activation marker expression

  • Effector cytokine production

  • Memory subset profiles

Antigens

  • Viral antigens (CMV, EBV, influenza)

  • Autoantigens (project-specific)

  • Tumor antigens (upon request)

Applications

  • Vaccine evaluation

  • Chronic inflammation research

  • Monitoring long-term immune responses

Immediate activation signatures and functional potency

Activation assays measure early and intermediate activation markers following stimulation.

Markers measured

  • CD69, CD25, CD71

  • PD-1, ICOS, CTLA-4 (optional)

  • Cytokine release and proliferation

Applications

  • Mechanism-of-action profiling

  • Immunotherapy and checkpoint inhibitor evaluation

  • Early T cell activation dynamics

Comprehensive multiparameter immunophenotyping

Using standardized and customizable flow cytometry panels, we analyze:

  • CD4⁺ and CD8⁺ T cell subsets

  • Memory populations (naïve, central memory, effector memory, TEMRA)

  • Helper subsets (Th1, Th2, Th17, Th22, Th1/Th17, etc.)

  • Regulatory T cells (FoxP3⁺CD25⁺CD127low)

  • Activation/exhaustion markers

Applications

  • Deep immune profiling

  • Translational biomarker discovery

  • Integration with in vivo or clinical samples

Technologies Used

  • Multicolor flow cytometry

  • Luminex & ELISA for cytokine profiling

  • CellTraceâ„¢ for proliferation

  • FluoroSpot / ELISpot for single-cell cytokine readouts

  • qPCR/ddPCR for transcriptional analysis

  • Human and mouse systems

Applications Across Drug Development

T cell biology assays support:

  • Autoimmunity and chronic inflammation

  • Oncology and immunotherapy (checkpoint inhibitors, bispecifics, cell therapies)

  • Vaccine and adjuvant evaluation

  • Target validation and mechanism-of-action

  • Tolerance and regulatory biology research

  • Antigen-specific immune monitoring

Why Use B and T Cell Biology Assays at Redoxis?

  • Broad expertise in B and T cell immunology across diseases

  • Standardized and customizable assay formats

  • Integration with molecular and functional readouts

  • Reproducible results from experienced in vitro scientists

  • Deep understanding of translational immunology

  • Strong foundation in autoimmune and inflammatory models

Contact us

Inquiries? Questions?

Nina Woodworth

COO