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Circulating CD16+ CD56+ Natural Killer Cells in Colorectal Cancer and Their Correlation with Survival
Gülcin Sahingoz Erdal1,2, Nilgun Isiksacan2,3, Tamay Seda Tasci2,3
1Department of Oncology, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Saglik Bilimleri University.
Summary
Natural killer (NK) cell levels are lower in stage 3 colorectal cancer (CRC) patients, correlating with reduced survival and higher CEA levels and obesity. NK cell rates may predict CRC prognosis.
Area of Science:
- Immunology
- Oncology
Background:
- Natural killer (NK) cells are crucial components of the innate immune system, involved in early defense against infections and tumors.
- Stage 3 colorectal cancer (CRC) presents a significant clinical challenge, necessitating investigations into prognostic biomarkers.
Purpose of the Study:
- To investigate the role and prognostic significance of NK cells in stage 3 colorectal cancer (CRC).
- To evaluate the relationship between NK cell levels, serum carcinoembryonic antigen (CEA), obesity, and patient survival in CRC.
Main Methods:
- Analysis of CD16+CD56+ NK cells using flow cytometry in newly diagnosed stage 3 CRC patients and healthy controls.
- Evaluation of associations between NK cell counts, survival, obesity, and serum CEA levels.
Main Results:
- A lower rate of NK cells was observed in stage 3 CRC patients compared to healthy controls.
- Reduced NK cell counts were significantly associated with decreased patient survival.
- A negative correlation was found between NK cell levels and age, serum CEA, and obesity at diagnosis.
Conclusions:
- The rate of NK cells may serve as an effective predictive biomarker for prognosis in stage 3 CRC.
- Further studies with larger cohorts are warranted to validate these findings and explore therapeutic implications.
