Journals / Turkish Journal of Gastroenterology / 2010 / Cilt: 21 - Sayı: 4

pT3 rektosigmoid kanserlerde β-katenin ile VEGF, siklin D1 ekpresyonu ilişkisi

β-Catenin and its relation to VEGF and cyclin D1 expression in pT3 rectosigmoid cancers

Pages
365–371
DOI
—
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AI Summary & Key Takeaways

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

Further larger studies on Wnt/β-catenin and target gene activity and protein expression are necessary to better understand and define their roles in the pathogenesis of colorectal carcinoma.

📌 3 Key Takeaways

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Objective & Hypothesis:Background/aims: β-catenin is a critical component of the Wnt signaling pathway that regulates cell proliferation and differentiation.
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Key Findings & Data:Wnt signaling leads to the stabilization of cytosolic β-catenin and to translocation to the nucleus, where it binds with T-cell factor and promotes the transcription and changes in target gene expression, including vascular endothelial growth factor and cyclin D1.
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Conclusion & Impact:Further larger studies on Wnt/β-catenin and target gene activity and protein expression are necessary to better understand and define their roles in the pathogenesis of colorectal carcinoma.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Background/aims: β-catenin is a critical component of the Wnt signaling pathway that regulates cell proliferation and differentiation. Wnt signaling leads to the stabilization of cytosolic β-catenin and to translocation to the nucleus, where it binds with T-cell factor and promotes the transcription and changes in target gene expression, including vascular endothelial growth factor and cyclin D1. The aim of this study was to assess the expression of cyclin D1 and vascular endothelial growth factor and to correlate them with β-catenin expression and some clinicopathologic parameters. Methods: In this study, we analyzed paraffin-embedded specimens from 42 patients with pT3 rectosigmoid cancer for β-catenin, vascular endothelial growth factor and cyclin D1 expression using immunohistochemistry. Results: Thirty-six (85.7%) and 24 (57.1%) tumors expressed vascular endothelial growth factor and cyclin D1, respectively. Nuclear expression of β-catenin was detected in only 26.1% of tumors. It was revealed that cytoplasmic β-catenin expression was significantly related to vascular endothelial growth factor expression (p=0.011). No association was found between nuclear or cytoplasmic β-catenin and cyclin D1 expression. No significant association was seen between β-catenin, vascular endothelial growth factor or cyclin D1 expression and some investigated clinicopathologic features. Conclusions: Our results may contribute to knowledge regarding the functional interaction between β-catenin and vascular endothelial growth factor. We suggest that the overexpression of cyclin D1 in rectosigmoid cancers may be more complicated than purely upregulation by β-catenin. Further larger studies on Wnt/β-catenin and target gene activity and protein expression are necessary to better understand and define their roles in the pathogenesis of colorectal carcinoma.

Özet

Amaç: β-katenin hücre çoğalması ve başkalaşımını düzenleyen Wnt mesaj yolunun önemli bir unsurudur. Wnt mesajı sitosolik β-catenin'in stabilizasyonuna yol açar ve nukleusa yerleştirir, burada T hücre faktörüne bağlanarak vasküler endotelyal büyüme faktörü ve siklin D1 genlerini içeren hedef genlerde transkripsiyonu ilerleterek gen ekspresyonunu değiştirir. Bu çalışmanın amacı siklin D1 ve vasküler endotelyal büyüme faktörü ekspresyonunu değerlendirerek ve bunların β'katenin ekspresyonu ve bazı klinikopatolojik parametrelerle ilişkisini belirlemekdir. Yöntem: Bu çalışmada pT3 sigmoid kanserli 42 hasta spesmenlerinin parafin bloklarında β-katenin, vasküler endotelyal büyüme faktörü ve siklin D1 ekspresyonu immunhistokimyasal yöntemle analiz edildi. Bulgular: Tümörlerin 36'sında (%85.7) vasküler endotelyal büyüme faktörü ve 24 ünde (%57.1) siklin D1 ekspresyonu vardı. Nukleer β-katenin ekspresyonu tümörlerin sadece %26.1'inde bulundu. Sitoplazmik β-katenin ekspresyonunun vasküler endotelyal büyüme faktörü ekspresyonu ile anlamlı olarak ilişkisi ortaya çıktı (p=0.011). Nukleer ve sitoplazmik β-katenin ile siklin D1 ekspresyonu arasında ilişki bulunmadı. β-katenin, vasküler endotelyal büyüme faktörü ve siklin D1 ekspresyonu ile bazı klinikopatolojik özellikler arasında ilişki görülmedi. Sonuç: Sonuçlarımız β-katenin ve vasküler endotelyal büyüme faktörü arasında fonksiyonel ilişkiye katkıda bulunabilir. Rektosigmoid kanserlerde siklin D1 ekspresyonunun sadece β-katenin düzenlemesine bağlı olmadığı, daha komplike olabileceğini düşünüyoruz. Wnt/βkatenin, hedef gen aktiviteleri ve protein ekspresyonlarını daha iyi anlamak ve kolorektal kanser patogenezindeki rollerini belirlemek için daha ileri çalışmalar gereklidir.

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Cite This Article

DİLEK, F. H., TOPAK, N., TOKYOL, Ç., AKBULUT, G., DİLEK, O. N. (2010). pT3 rektosigmoid kanserlerde β-katenin ile VEGF, siklin D1 ekpresyonu ilişkisi. Turkish Journal of Gastroenterology, Cilt: 21 - Sayı: 4, 365–371. https://ajindex.com/articles/410828

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References (16)

  1. Ferrara N, Davis-Smyth T. The biology of vascular endothelial growth factor. Endocr Rev 1997; 18: 4
  2. Ferrara N, Gerber HP, LeCouter J. The biology of VEGF and its receptors. Nat Med 2003; 9: 669-76
  3. Takahashi Y, Tucker SL, Kitadai Y, et al. Vessel counts and expression of vascular endothelial growth factor as prognostic factors in node-negative colon cancer. Arch Surg 1997; 132: 541-6
  4. Lin SY, Xia W, Wang JC, et al. Beta-catenin, a novel prognostic marker for breast cancer: its roles in cyclin D1 expression and cancer progression. Proc Natl Acad Sci U S A 2000; 97: 4262-6
  5. Bondi J, Bukholm G, Nesland JM, Bukholm IRK. Expression of non-membranous β-catenin and γ-catenin, c-Myc and cyclin D1 in relation to patient outcome in human colon adenocarcinomas. APMIS 2004; 112: 49-56
  6. Gavert N, Ben-Ze'ev A. beta-Catenin signaling in biological control and cancer. J Cell Biochem 2007; 102: 820-8
  7. Doucas H, Garcea G, Neal CP, et al. Changes in the Wnt signalling pathway in gastrointestinal cancers and their prognostic significance. Eur J Cancer 2005; 41: 365-79
  8. Tetsu O, McCormick F. ß-Catenin regulates expression of cyclin D1 in colon carcinoma cells. Nature (Lond) 1999; 398: 422-6
  9. He TC, Sparks AB, Rago C, et al. Identification of c-MYC as a target of the APC pathway. Science 1998; 281: 150912
  10. Easwaran V, Lee SH, Inge L, et al. Beta-Catenin regulates vascular endothelial growth factor expression in colon cancer. Cancer Res 2003; 63: 3145-53
  11. Greene FL, Page DL, Fleming ID, et al., eds. AJCC: cancer staging handbook: From the AJCC cancer staging manual. 6th ed. New York: Springer Verlag, 2002; 127-9
  12. Hamilton SR, Aaltonen LA, eds. WHO classification of tumors. Pathology and genetics. Tumors of digestive system organs. Lyon: IARC Press, 2000
  13. Saegusa M, Hashimura M, Hara A, Okayasu I. Up-regulation of pS2 expression during the development of adenocarcinomas but not squamous cell carcinomas of the uterine cervix, independently of expression of c-jun or oestrogen and progesterone receptors. J Pathol 2000; 190: 554-63
  14. Wong SC, Lo ES, Lee KC, et al. Prognostic and diagnostic significance of beta-catenin nuclear immunostaining in colorectal cancer. Clin Cancer Res 2004; 10: 1401-8
  15. Lugli A, Zlobec I, Minoo P, et al. Prognostic significance of the wnt signalling pathway molecules APC, beta-catenin and E-cadherin in colorectal cancer: a tissue microarraybased analysis. Histopathology 2007; 50: 453-64
  16. Maruyama K, Ochi