Journals / Uluslararası Hematoloji-Onkoloji Dergisi / 2009 / Cilt: 19 - Sayı: 1

Mide kanseri hastalarında doğal öldürücü hücrelerde azalmış NKG2D ekspresyonu

Decreased NKG2D expression on natural killer cells in gastric cancer patients

Pages
42–47
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Further studies which explore the biological significance of lower NKG2D expression and its putative anti-tumor role in cancer patients should be established.

📌 3 Key Takeaways

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Objective & Hypothesis:NKG2D is an activating receptor of natural killer (NK) cells.
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Key Findings & Data:NKG2D expression have not been studied on NK cells of gastric cancer patients so far.
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Conclusion & Impact:Further studies which explore the biological significance of lower NKG2D expression and its putative anti-tumor role in cancer patients should be established.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Bağışıklık · Öldürücü hücreler · doğal

Abstract

NKG2D is an activating receptor of natural killer (NK) cells. NKG2D expression have not been studied on NK cells of gastric cancer patients so far. Therefore, we aimed to investigate NKG2D of NK and T cells in peripheral blood of patients with gastric cancer. Twelve chemotherapy and radiotherapy naive patients with gastric cancer and 25 age-matched healty volunteers were enrolled in this study. NKG2D expressions on NK and T cells were evaluated by three color flow cytometry. The hematological and flow cytometric parameters were compared between cancer patients and healthy subjects. Hemoglobin and hematocrite values were decreased in patients compared with those of controls. Other hematological parameters, T cells (CD56-CD3+ cells) and NK cells (CD56+CD3- cells) were not different between groups. The percentage of NKG2D positivity in NK cells was significantly lower in gastric cancer patients than healthy subjects (84.4% ± 9.5% vs 90.2% ± 8.2%; p= 0.02, respectively), whereas NKG2D positive T cells were similar. NKG2D expression is decreased on NK cells in gastric cancer patients. Further studies which explore the biological significance of lower NKG2D expression and its putative anti-tumor role in cancer patients should be established.

Özet

NKG2D Doğal Öldürücü (NK) hücrelerin bir aktivatör reseptörüdür. Daha önce mide kanser hastalarında NK hücrelerde NKG2D ekspresyonu çalışılmamıştır. Bu nedenle mide kanser hastalarının periferik kanında NK hücreler ve T lenfositlerde NKG2D varlığını araştırmayı amaçladık. Daha önce kemoterapi ya da radyoterapi görmemiş 12 mide kanser hastası ile 25 yaş ortalaması denk sağlıklı gönüllü çalışmaya alınmıştır. NK hücreler ve T lenfositlerdeki NKG2D ekspresyonu üç renkli akım sitometri ile çalışılmıştır. Hematolojik ve akım sitometrik veriler kanser hastaları ve sağlıklı bireyler arasında karşılaştırılmıştır. Hemoglobin ve hematokrit değrleri hastalarda kontrolden daha düşüktü. Diğer hematolojik parametreler, T lenfositler (CD56-CD3+ hücreler) ve NK hücreler (CD56+CD3- hücreler) gruplarda farklı değildi. T lenfositlerde NKG2D pozitif hücreler farklı değilken mide kanser hastalarında NK hücre NKG2D pozitiflik yüzdesi sağlıklı bireylerden daha düşüktü (Sırasıyla %84.4 ± %9.5 vs %90.2 ± %8.2; p= 0.02). Mide kanser hastalarında NK hücrelerde NKG2D ekspresyonu azalmıştır. Bu düşük NKG2D ekspresyonunun biyolojik önemini ve onun olası anti-tümör rolünü ortaya koyacak daha ileri çalışmalara gereksinim vardır.

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Cite This Article

KARAGÖZ, B., BİLGİ, O., KANDEMİR, G., SAYAN, Ö., ERİKÇİ, A. A., ÖZGÜN, M. A., YILMAZ, B., TÜRKEN, O., ÖZTÜRK, A. (2009). Mide kanseri hastalarında doğal öldürücü hücrelerde azalmış NKG2D ekspresyonu. Uluslararası Hematoloji-Onkoloji Dergisi, Cilt: 19 - Sayı: 1, 42–47. https://ajindex.com/articles/323083

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