The cytokine milieu orchestrates the Th1/Th2/Th17 and Treg cells roles in acute lymphoblastic leukemia patients
Copyright (c) 2026 Hunar Dhahir Ismael , Soza Tharwat Baban, Zahra Abdulqader Amin (Author)

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
- Articles
- Submited: April 18, 2025
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Published: April 23, 2026
Abstract
Background and objective: T cells perform a crucial role in mediating immune responses to a diversity of pathogens. Different types of T cells play a great role in immune response, including T helper cells 1 (Th1), T helper cells 2 (Th2), T helper cells 17 (Th17), and T regulatory cells (Treg cells). Each of these cells produces different types of cytokines, and irregularities of their levels have been linked to various malignancies.
Methods: In this case-control study, demographic information was collected from patients suffering from acute lymphoblastic leukemia (ALL), and then concentrations of C-reactive protein (CRP) and total white blood cell (WBC) count, beside interleukins 2,4,10,13,17 and 22(IL-2, IL-4 IL-10, IL-13, IL17, IL22), tumor necrosis factor alpha (TNF-α) and interferon gamma (INF-γ) cytokines were tested in their sera.
Results: Th-associated pro-inflammatory cytokines IFN-γ, IL-2, TNF-α, IL-4, IL-13, IL-17, and IL-22 were significantly decreased in ALL patients compared to healthy controls. On the other hand, immunosuppressive cytokine IL-10 associated with Treg cells was markedly elevated in the patient group. Elevated CRP and WBC levels were also observed in ALL patients, indicating systemic inflammation.
Conclusion: The cytokine profile in ALL patients is indicative of a shift to immunosuppressive status that could facilitate leukemic development. The reduction in pro-inflammatory cytokines and elevation of IL-10 levels point towards suppressed anti-tumor immunity. These findings highlight the significance of Th1/Th2/Th17/Treg cell interactions in ALL and suggest that manipulation of cytokine disbalance could yield new diagnostic or therapeutic avenues.
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