Mucosal Immune System Immunophenotyping Service

Flow cytometry stands as a cornerstone of our immunophenotyping service. This high-throughput technology enables the simultaneous, multiparameter analysis of thousands of individual cells isolated from mucosal tissues. By employing meticulously designed antibody panels, we can precisely identify and quantify diverse immune cell populations, including:

• T cell subsets: Naive, effector, memory T cells (CD4+, CD8+), regulatory T cells (Tregs), and unconventional T cells (e.g., MAIT cells, γδ T cells). This includes the characterization of activation markers such as CD69, CD25, and HLA-DR, which are crucial indicators of immune cell engagement and functional status.
• B cell populations: Follicular B cells, marginal zone B cells, plasma cells, and their activation and differentiation states, including immunoglobulin class switching and expression of co-stimulatory molecules.
• Innate Immune Cells: Dendritic cells (DCs), macrophages (including resident macrophage subsets), neutrophils, and various innate lymphoid cells (ILCs) such as ILC1, ILC2, and ILC3, each playing distinct roles in mucosal homeostasis and immunity.
• Cell Trafficking Markers: Analysis of chemokine receptors and adhesion molecules (e.g., α4β7integrin) provides insights into the migratory potential and tissue localization of immune cell subsets within mucosal sites.

Our advanced flow cytometry capabilities, coupled with bead-based quantification methods, allow for absolute cell counts per tissue mass, providing more robust and interpretable data than relative frequencies alone, particularly in the context of heterogeneous mucosal samples.

While flow cytometry excels at quantitative cellular analysis, immunohistochemistry (IHC) provides indispensable spatial context. Creative Biolabs' IHC experts utilize highly specific antibodies to visualize immune cell populations and their precise localization within intact mucosal tissue sections. This technique is crucial for:

• Mapping Immune Cell Distribution: Understanding how immune cells are organized relative to epithelial barriers, lymphoid follicles (e.g., Peyer's patches in the gut), and other tissue components. This spatial arrangement is vital for deciphering local immune interactions and their impact on tissue function and pathology.
• Assessing Tissue Microenvironment: Characterizing the expression of cytokines, chemokines, and other mediators within the tissue, providing insights into the inflammatory or tolerogenic state of the mucosal microenvironment.
• Evaluating Barrier Integrity: Observing the integrity of epithelial tight junctions and mucus layers, which are critical components of the mucosal barrier and intimately linked with immune regulation.

Creative Biolabs' IHC service delivers high-resolution images and quantitative data on cell density and proximity, complementing flow cytometry data to provide a holistic understanding of mucosal immune responses.

Transcriptomic analysis, particularly RNA sequencing, offers a deep dive into the molecular programming of mucosal immune cells. By analyzing gene expression profiles, Creative Biolabs can provide a comprehensive view of cellular activity, differentiation pathways, and functional states. This includes:

• Identifying Activation Pathways: Uncovering the specific gene networks and signaling pathways that are activated or suppressed in response to various stimuli or in disease states, offering clues to underlying pathogenic mechanisms.
• Profiling Cytokine and Chemokine Signatures: Quantifying the expression of immune-relevant genes, including those encoding cytokines, chemokines, and their receptors, which dictate the nature and magnitude of immune responses.
• Discovering Novel Biomarkers: Identifying unique transcriptional signatures that may serve as novel biomarkers for disease diagnosis, prognosis, or response to therapy.
• Investigating Cell Fate and Function: Elucidating the molecular programs that drive immune cell differentiation, such as the polarization of T helper cell subsets (Th1, Th2, Th17, Treg) or the maturation of antigen-presenting cells.

At Creative Biolabs, our transcriptomic analysis is performed with meticulous attention to detail, from sample preparation to bioinformatics analysis, ensuring robust and interpretable gene expression data from even challenging mucosal tissue samples.