Journals / Turkish Journal of Gastroenterology / 2010 / Cilt: 21 - Sayı: 3

Gastrik kanserlerde β-catenin'den bağımsız nankanonikal Wnt yolunun indüklenmesi mümkün olabilir

β-catenin-independent noncanonical Wnt pathway might be induced in gastric cancers

Pages
224–230
DOI
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AI Summary & Key Takeaways

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

Results: Our results showed a specific combination of genes expressed significantly in the gastric tumor tissues: 65% of the tumor samples containing non-nuclear β-catenin were Wnt5a-positive, 42.5% were MMP-7-positive, and 35% of the samples involved both.

📌 3 Key Takeaways

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Objective & Hypothesis:Background/aims: Abnormal Wnt signaling is often observed in human cancers.
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Key Findings & Data:Wnt5a is a representative Wnt ligand that can activate both β-catenin-dependent canonical andβ-cateninindependent noncanonical Wnt pathways.
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Conclusion & Impact:Results: Our results showed a specific combination of genes expressed significantly in the gastric tumor tissues: 65% of the tumor samples containing non-nuclear β-catenin were Wnt5a-positive, 42.5% were MMP-7-positive, and 35% of the samples involved both.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Wnt Proteinleri · Mide hastalıkları · Mide neoplazmları

Abstract

Background/aims: Abnormal Wnt signaling is often observed in human cancers. Wnt5a is a representative Wnt ligand that can activate both β-catenin-dependent canonical andβ-cateninindependent noncanonical Wnt pathways. However, the role of Wnt5a in carcinogenesis is controversial. This study was designed to understand whether Wnt5a in the Wnt pathway and its key downstream molecules such as MMP-7 and β-catenin are involved in gastric cancers. Methods: We analyzed the expressions of Wnt5a, MMP-7 and β-catenin genes in 40 primary gastric normal and tumor biopsies by RT-PCR and the subcellular localization of β-catenin by immunohistochemistry. Results: Our results showed a specific combination of genes expressed significantly in the gastric tumor tissues: 65% of the tumor samples containing non-nuclear β-catenin were Wnt5a-positive, 42.5% were MMP-7-positive, and 35% of the samples involved both. Interestingly, normal samples did not show any relevant coexpression of Wnt5a and MMP-7 in the β-catenin-containing samples. Conclusions: These results suggest that the noncanonical Wnt pathway might be critically important in gastric carcinogenesis.

Özet

Amaç: İnsan kanserlerinde Wnt5a sinyal bozuklukları sıkça gözlemlenmektedir. Wnt5a β-katenin'e bağımlı kanonikal ve βkatenin'den bağımsız nankanonikal Wnt yolunu aktive eden tipik bir Wnt ligantıdır. Ancak, Wnt5a'nın kanser oluşumundaki rolü çelişkilidir. Bu çalışma Wnt sinyal yolunda yer alan Wnt5a'nın ve onun aşağısındaki anahtar moleküllerden MMP7'nin ve β-katenin'in gastrik kanselerdeki durumunu anlamak üzere tasarlanmıştır. Yöntem: Bunu anlamak için, 40 primer gastrik normal ve tümörlü biyopside Wnt5a, MMP-7 ve β-katenin genlerinin ekspresyonları RT-PZR ile, β-katenin'in hücre içi lokalizasyonu ise immunohistokimya ile analiz edildi. Bulgular: Sonuçlarımız gastrik tümör dokularında spesifik gen kombinasyonlarının önemli derecede ifade edildiğini gösteriyor. Nükleer olmayan β-katenin içeren %65 tümör dokusu aynı zamanda Wnt5a pozitiftir, bu dokulardan %42.5'i MMP-7 pozitiftir ve %35'i ise her iki gen ekspresyonunu da ihtiva etmektedir. β-katenin ekspresyonu saptanan normal dokularda ise Wnt5a ve MMP-7 genlerinin birlikte ekspresyonları gözlemlenmemiştir. Sonuç: Bu bulgular gastrik kanser oluşumunda nankanonikal Wnt sinyal yolunun son derece önemli olabileceğini ileri sürmektedir.

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Cite This Article

GENCER, S., ŞEN, G., DOĞUSOY, G., BELLİ, A. K., PAKSOY, M., YAZICIOĞLU, M. B. I. (2010). Gastrik kanserlerde β-catenin'den bağımsız nankanonikal Wnt yolunun indüklenmesi mümkün olabilir. Turkish Journal of Gastroenterology, Cilt: 21 - Sayı: 3, 224–230. https://ajindex.com/articles/410347

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