Journals / Harran Üniversitesi Tıp Fakültesi Dergisi / 2017 / IONCC 2017 Özel sayısı

Expression of miR-92, miR-21, miR-155, Oncogemic miRNAs using qRT-PCR in Colon Cancer stage II Tissues

Stage II Kolon kanseri dokularında Onkogenik microRNA olan miR-92, miR21, miR-155’in qRT-PCR’da Ekspresyonu

Pages
31–39
Publication Date
2017-12-30
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

The results of recent studies have shown that miRNAs involved in the regulation of many cellular functions may be used as biomarkers for diagnosis and treatment of cancer.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Background: In this study, we aimed to detect the expression levels of miR-92, miR-21 and miR-155 in tumor and normal colon and rectum tissues with oncogenic microRNA (miRNA) obtained from patients with Stage II colorectal cancer using qRTPCR and to compare the obtained data.
📊
Key Findings & Data:Result: The mean level of miRNA-21 expression in 9 patients diagnosed with colorectal cancer appears to have increased 2.09 fold compared to normal tissue and tumor tissue, while miR-155 increased 2.22 fold.
💡
Conclusion & Impact:The results of recent studies have shown that miRNAs involved in the regulation of many cellular functions may be used as biomarkers for diagnosis and treatment of cancer.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:miRNA · onkogenik miRNA · Kolon kanseri

Abstract

Background: In this study, we aimed to detect the expression levels of miR-92, miR-21 and miR-155 in tumor and normal colon and rectum tissues with oncogenic microRNA (miRNA) obtained from patients with Stage II colorectal cancer using qRTPCR and to compare the obtained data. Material and Method: This study was carried out with the clinical, laboratory and pathological findings of the tissues obtained from patients diagnosed with colorectal cancer at Gaziantep University Medical Faculty Research and Training Hospital -General Surgery Department. miRNeasy mini kit-isolated miRNAs were used for qRT-PCR implementation. The isolated miRNAs were converted into cDNA via the miScript RT-PCR commercial kit. The cDNA samples with miRNA expression levels in tissue samples were identified via Rotor Gene RT-PCR system using RT-SYBR Green qPCR kit. Result: The mean level of miRNA-21 expression in 9 patients diagnosed with colorectal cancer appears to have increased 2.09 fold compared to normal tissue and tumor tissue, while miR-155 increased 2.22 fold. This increase was considered as statistically significant (p <0.05). When the fold chance values of normal and tumor tissue are compared, despite being oncogenic miRNA, miR-92 appears to have decreased 1.37 fold and was not considered statistically significant (p>0.05). Conclusion: According to the findings obtained in our study, the expression levels of oncogenic miRNA miR21 and miR-155 in tumor colon tissues of patients with colorectal cancer have increased. The results of recent studies have shown that miRNAs involved in the regulation of many cellular functions may be used as biomarkers for diagnosis and treatment of cancer.

Özet

Amaç: Bu çalışmada Stage II kolorektal kanserli hastalardan alınmış tümörlü ve normal kolon/rektum dokularında Onkogenik mikroRNA (miRNA) olan miR-92, miR-21 ve miR-155’in ekspresyon seviyelerinin qRT-PCR ile tespit edilmesi ve elde edilen verilerin karşılaştırılması amaçlanmıştır. Materyal ve Metod: Bu çalışma Gaziantep Üniversitesi Tıp Fakültesi Araştırma ve Uygulama Hastanesi Genel Cerrahi Anabilim Dalı’ndan laboratuar ve patalojik bulgular ile klinik değerlendirme sonucunda kolorektal kanser tanısı konmuş 9 hastanın tümörlü ve normal (kontrol-temiz cerrahi sınırları) kolon/rektum dokular ile çalışılmıştır. qRT-PCR uygulaması için miRNeasy mini kit ile izole edilen miRNA’lar kullanıldı. İzole edilen miRNA’lar miScript RT-PCR ticari kit ile cDNA’ya dönüştürüldü. Doku örneklerindeki miRNA ekspresyon seviyeleri ile cDNA örnekleri RT- SYBR Green qPCR kiti kullanılarak Rotor Gene RT-PCR sistemi ile belirlendi. Bulgular: Kolorektal kanser teşhisi konulmuş 9 hastanın ortalama miRNA-21 ekspresyon seviyesi normal doku ve tümörlü doku karşılaştırıldığında 2.09 kat arttığı, miR-155’in ise 2.22 kat arttığı tespit edilmiştir. Bu artış istatiksel olarak anlamlı bulunmuştur (p≤ 0.05). onkogenik miRNA olmasına rağmen miR-92 ekpresyon miktarı normal ve tümör dokusu fold change değerleri karşılaştırıldığında 1.37 kat azaldığı tespit edilmiştir. Ancak bu azalmanın istatiksel bakımdan anlamlı olmadığı bulunmuştur (p˃0.05). Sonuç: Çalışmamızdan elde ettiğimiz bulgulara göre kolorektal kanserde onkogenik miRNA olan miR-21 ve miR-155’in hastaların tümörlü kolon dokularında ekspresyon seviyeleri artmıştır. Son yıllarda yapılan araştırmaların sonuçları Hücresel birçok temel işlevin düzenlenmesinde görev alan miRNA’ların kanserin tanı ve tedavisi için biyobelirteç olarak kullanılabileceği fikrini ortaya koymuştur.

🔖

Cite This Article

GÜNGÖRMEZ, Ç., AKTAS, H. G., BORAZAN, E. (2017). Expression of miR-92, miR-21, miR-155, Oncogemic miRNAs using qRT-PCR in Colon Cancer stage II Tissues. Harran Üniversitesi Tıp Fakültesi Dergisi, IONCC 2017 Özel sayısı, 31–39. https://ajindex.com/articles/22461

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (16)

  1. Wijnhoven B.P, Michael M.Z and Watson D.I. MicroRNAs and cancer. BR. Journel Surgery 2007;94:23-30
  2. Iorio M.V, Ferracin M, Liu C.G, et al. MicroRNA gene expression deregulation in human breast cancer. Cancer Res 2005; 65:7065–7070
  3. Calin G.A, Ferracin M, Cimmino A, Di Leva G, Shimizu M, Wojcik SE, et al. A MicroRNA signature associated with prognosis and progression in chronic lymphocytic leukemia. The New England journal of medicine 2005; 353(17):1793-801
  4. Lehmann U, Hasemeier B, Römermann D, Müler K, Langer F. and Kreipe H., Epigenetic inactivation of microRNA genes in mammary carcinoma, Verh Dtsch Ges Pathol 200;7 91, 214- 220 p
  5. Saydam F, Değirmenci İ, Güneş V. MikroRNA’lar ve kanser Dicle Tıp Dergisi, 2011; 38(1), 113-120
  6. Michor F, Iwasa Y, et al. Dynamics of colorectal cancer. Semin Cancer Biol. 2005; 15(6), 484-93
  7. Hermsen M, Postma C and Baak J. Colorectal adenoma to carcinoma progression follows multiple pathways of chromosomal instability. Gastroenterolgy 2002; 123, 1109-1119
  8. Corte H, Manceau G, Blons H, Laurent-Puig P. MicroRNA and colorectal cancer. Dig Liver Dis. 2012; 195-200
  9. Sigel R.L, Miller K.B, Jemal A. Cncer Statistic, 2017. Cancer Journal for Clinicions 2017; 67: 7- 30 10) Ambros V. A hierarchy of regulatory genes controls a larva-to-adult developmental switch in C. elegans. Cell 1989; 57(1):49-57
  10. Lee R.C, Feinbaum R.L, Ambros V. The C. elegans heterochronic gene lin-4 encodes small RNAs with antisense complementarity to lin-14. Cell 1993; 75(5):843 54
  11. Aiello M, Vella N, Cannavo C, Scalisi A, Spandidos D.A, Toffoli C, Buonadonna A, Libra M, and Stivala F. Role of genetic polymorphisms and mutations in colorectal cancer therapy. Molecular Medicine Reports 2011; 4, 203-208
  12. Bedeir A and Krasinskas A.M. Molecular Diagnostics of Colorectal Cancer. Arch Pathol Lab Med 2011; 135, 204-215
  13. Pillai R.S, Bhattacharyya S.N, Filipowicz W. Repression of protein synthesis by miRNAs: How many mechanisms? Trends in Cell Biology 2007; 17, 118-126
  14. Calin G. A et al. Frequent deletions and downregülation of microRNA genes miR15 and miR16 at 13q14 in chronic lymphocytic leukemia. Proceedings of the National Academy of Sciences of the United States of America 2002; 99:15524- 15529
  15. Calin G.A, Sevignani C, Dumitru C.D, et al. Human microRNA genes are frequently located at fragile sites and genomic regions involved in cancers. Proc Natl Acad Sci USA 2004;101:2999– 3004
  16. Hayes J, Peruzzi P.P and Lawle