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Altered Expression of NK Receptors in Racially/Ethnically Diverse and Risk-of-Relapse Pediatric Acute Lymphoblastic
Stephen Mathew1, Roslin Jose George2, Alexsis Garcia1
1Department of Microbiology, Immunology and Genetics, University of North Texas Health Science Center, Fort Worth, TX 76107, USA.
Biomedicines
|June 26, 2025
Summary
Pediatric Acute Lymphoblastic Leukemia (ALL) patients showed altered immune receptor expression, particularly LLT1 and CS1, linked to relapse risk and racial/ethnic differences. These findings may inform immune surveillance strategies against ALL.
Area of Science:
- Immunology
- Pediatric Oncology
- Hematology
Background:
- Acute Lymphoblastic Leukemia (ALL) is a common pediatric cancer with varying incidence across racial/ethnic groups.
- Understanding immune cell receptor expression is crucial for pediatric ALL outcomes and relapse risk stratification.
Purpose of the Study:
- To investigate immune cell receptor expression in pediatric ALL patients across different racial/ethnic groups.
- To identify potential correlations between receptor expression, relapse risk, and treatment response.
Main Methods:
- Flow cytometry was used to analyze cell surface expression of immune receptors (2B4, CS1, LLT1, NKp30, NKp46).
- Whole blood samples were collected from healthy subjects and pediatric ALL patients at diagnosis and post-chemotherapy.
Main Results:
- Increased LLT1 expression was observed in high-risk ALL patients on NK cells, T cells, and monocytes.
- CS1 was overexpressed on monocytes in very-high risk ALL patients, persisting post-chemotherapy.
- Racial/ethnic differences in NKp30 and CS1/LLT1 expression were noted in T cells, particularly in Caucasian patients.
Conclusions:
- Altered immune receptor expression in pediatric ALL is associated with risk stratification and racial/ethnic background.
- These findings suggest a role for T cell and NK cell-mediated immune surveillance in pediatric ALL.
- Immune receptor profiling may offer insights into personalized treatment strategies for pediatric ALL.
