Chemokine Receptor Signaling Pathway – Mechanism and Biomarker Analysis
What is the chemokine receptor signaling pathway?
The chemokine receptor signaling pathway regulates immune cell trafficking, inflammation, and tissue homeostasis through a complex network of chemokines and their receptors.
Chemokine receptors are G protein-coupled receptors (GPCRs) expressed on immune and non-immune cells. Upon ligand binding, they activate intracellular signaling cascades that control cell migration, adhesion, and activation.
This pathway plays a central role in immune surveillance, inflammatory responses, and tissue repair.
Dysregulation is associated with chronic inflammation, autoimmune diseases, cancer progression, and viral infections
Chemokine receptor pathway activity is commonly analyzed using gene expression profiling. qPCR-based approaches enable accurate and reproducible analysis of signaling activity across biological conditions.
Chemokines and chemokine receptors involved in immune activation and immune inhibition:
The different cells in tumour microenvironment are infiltrated and activated by different chemokines. These cells can be immunoactivatory or immunoinhibitory in nature. A number of such chemokines and chemokine receptors are shown that affect the cancer immune response.
Receptors of chemokines play a role in chemotaxis and initiating cell trafficking to the desired location by trigger a flux of calcium ions intracellularly upon specific ligand binding. They are classified into four subfamilies based on structural and functional criteria: CC, CXC, CX3C and C. CC and CXC chemokines, for instance, play key roles in angiogenesis, leukocyte recruitment, and tumour growth and proliferation (graphic from Braoudaki M, et al. 2022).
Key takeaways
Central regulators of immune cell migration and chemotaxis
Strong crosstalk with NF-κB, MAPK, and JAK-STAT pathways
Critical role in cancer, infection, and autoimmune diseases
High relevance for biomarker discovery and immune profiling
Efficiently studied using expression-based pathway analysis
Key genes involved in chemokine receptor signaling pathway
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Bibliography
1. Hughes CE, Nibbs RJB. A guide to chemokines and their receptors. FEBS J. (2018);285(16):2944-2971.
2. Braoudaki M, et al. Chemokines and chemokine receptors in colorectal cancer; multifarious roles and clinical impact. Semin Cancer Biol. (2022);86(Pt 2):436-449.
3. Gencer S, et al. Inflammatory Chemokines in Atherosclerosis. Cells. (2021);10(2):226.
4. Olivarria G, Lane TE. Evaluating the role of chemokines and chemokine receptors involved in coronavirus infection. Expert Rev Clin Immunol. (2022);18(1):57-66.
5. Saxena S, Singh RK. Chemokines orchestrate tumor cells and the microenvironment to achieve metastatic heterogeneity. Cancer Metastasis Rev. (2021);40(2):447-476..
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