Journals / Turkish Journal of Hematology / 2015 / Cilt: 32 - Sayı: 4

Diffüz Büyük B-Hücreli Lenfomada GADD45? Metilasyonunun Olası Rolü: Lenfoma Progresyonunu ve Doku Tutulumunu Etkiler mi?

Possible Role of GADD45? Methylation in Diffuse Large B-Cell Lymphoma: Does It Affect the Progression and Tissue Involvement?

Pages
295–303
DOI
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AI Summary & Key Takeaways

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

In addition, nodal involvement is more likely to be present in patients with unmethylated GADD45?

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Diffuse large B-cell lymphoma (DLBCL) is the most common type of non-Hodgkin lymphoma among adults and is characterized by heterogeneous clinical, immunophenotypic, and genetic features.
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Key Findings & Data:Growth arrest DNA damage-inducible 45 (GADD45?) is an important gene family involved in these mechanisms.
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Conclusion & Impact:In addition, nodal involvement is more likely to be present in patients with unmethylated GADD45?
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Diffuse large B-cell lymphoma (DLBCL) is the most common type of non-Hodgkin lymphoma among adults and is characterized by heterogeneous clinical, immunophenotypic, and genetic features. Different mechanisms deregulating cell cycle and apoptosis play a role in the pathogenesis of DLBCL. Growth arrest DNA damage-inducible 45 (GADD45?) is an important gene family involved in these mechanisms. The aims of this study are to determine the frequency of GADD45? methylation, to evaluate the correlation between GADD45? methylation and protein expression, and to investigate the relation between methylation status and clinicopathologic parameters in DLBCL tissues and reactive lymphoid node tissues from patients with reactive lymphoid hyperplasia. Materials and Methods: Thirty-six tissue samples of DLBCL and 40 nonmalignant reactive lymphoid node tissues were analyzed in this study. Methylation-sensitive high-resolution melting analysis was used for the determination of GADD45? methylation status. The GADD45? protein expression was determined by immunohistochemistry.Results: GADD45? methylation was frequent (50.0%) in DLBCL. It was also significantly higher in advanced-stage tumors compared with early-stage (p=0.041). In contrast, unmethylated GADD45? was associated with nodal involvement as the primary anatomical site (p=0.040). Conclusion: The results of this study show that, in contrast to solid tumors, the frequency of GADD45? methylation is higher and this epigenetic alteration of GADD45? may be associated with progression in DLBCL. In addition, nodal involvement is more likely to be present in patients with unmethylated GADD45?

Özet

Amaç: Diffüz büyük B-hücreli lenfoma (DBBHL) yetişkin bireylerde Hodgkin-dışı lenfomaların en yaygın tipidir ve klinik, immünofenotipik ve genetik özellikler açısından heterojen özellikler taşıması ile karakterizedir. DBBHL patogenezinde hücre döngüsü ve apoptoz regülasyonunu bozan farklı mekanizmalar rol oynamaktadır. Growth arrest DNA damage-inducible 45 (GADD45?), bu mekanizmalarda yer alan önemli bir gen ailesidir. Bu çalışmanın amaçları DBBHL doku örnekleri ve reaktif lenfoid hiperplazili bireylerin reaktif lenfoid doku örneklerinde GADD45? metilasyon sıklığını belirlemek, GADD45? metilasyonu ile protein ekspresyonu arasındaki ilişkiyi değerlendirmek ve DBBHL olgularında metilasyon durumunun klinikopatolojik parametrelerle ilişkisini araştırmaktır. Gereç ve Yöntemler: Bu çalışmada 36 adet DBBHL doku örnekleri ve 40 adet malign-olmayan reaktif lenfoid doku örnekleri analiz edildi. GADD45? metilasyon durumunu belirlemek için metilasyona-duyarlı yüksek çözünürlüklü erime eğrisi analizi kullanıldı. GADD45? protein ekspresyonu immünohistokimyasal analiz ile belirlendi.Bulgular: DBBHL'de GADD45? metilasyonunun sık olduğu belirlendi (%50). Aynı zamanda, erken evre ile karşılaştırıldığında ileri evre tümörlerde GADD45? metilasyonu istatistiksel olarak anlamlı düzeyde yüksekti (p=0,041). Ancak, GADD45? metilasyon yokluğunun primer anatomik yerleşim olarak nodal tutulumla ilişkili olduğu belirlendi (p=0,040).Sonuç: Bu çalışmanın sonuçları solid tümörlerin aksine, DBBHL'de GADD45? metilasyon sıklığının yüksek olduğunu ve GADD45? geninde gözlenen bu epigenetik değişimin, hastalığın progresyonu ile ilişkili olabileceğini göstermektedir. Buna ek olarak, nodal tutulum daha çok GADD45? metile olmayan olgularda gözlenmektedir

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Cite This Article

BARIŞ, İ. C., CANER, V., TÜRK, N. Ş., SARI, İ., HACIOĞLU, S., DOĞU, M. H., ÇETİN, G. O., TEPELİ, E., CAN, Ö., BAĞCI, G., KESKİN, A. (2015). Diffüz Büyük B-Hücreli Lenfomada GADD45? Metilasyonunun Olası Rolü: Lenfoma Progresyonunu ve Doku Tutulumunu Etkiler mi?. Turkish Journal of Hematology, Cilt: 32 - Sayı: 4, 295–303. https://ajindex.com/articles/412813

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