World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Plos One : Dna Methylation in the Malignant Transformation of Meningiomas, Volume 7

By Rao, Jasti

Click here to view

Book Id: WPLBN0003936462
Format Type: PDF eBook :
File Size:
Reproduction Date: 2015

Title: Plos One : Dna Methylation in the Malignant Transformation of Meningiomas, Volume 7  
Author: Rao, Jasti
Volume: Volume 7
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary)
Publication Date:
Publisher: Plos


APA MLA Chicago

Rao, J. (n.d.). Plos One : Dna Methylation in the Malignant Transformation of Meningiomas, Volume 7. Retrieved from

Description : Meningiomas are central nervous system tumors that originate from the meningeal coverings of the brain and spinal cord. Most meningiomas are pathologically benign or atypical, but 3–5% display malignant features. Despite previous studies on benign and atypical meningiomas, the key molecular pathways involved in malignant transformation remain to be determined, as does the extent of epigenetic alteration in malignant meningiomas. In this study, we explored the landscape of DNA methylation in ten benign, five atypical and four malignant meningiomas. Compared to the benign tumors, the atypical and malignant meningiomas demonstrate increased global DNA hypomethylation. Clustering analysis readily separates malignant from atypical and benign tumors, implicating that DNA methylation patterns may serve as diagnostic biomarkers for malignancy. Genes with hypermethylated CpG islands in malignant meningiomas (such as HOXA6 and HOXA9) tend to coincide with the binding sites of polycomb repressive complexes (PRC) in early developmental stages. Most genes with hypermethylated CpG islands at promoters are suppressed in malignant and benign meningiomas, suggesting the switching of gene silencing machinery from PRC binding to DNA methylation in malignant meningiomas. One exception is the MAL2 gene that is highly expressed in benign group and silenced in malignant group, representing de novo gene silencing induced by DNA methylation. In summary, our results suggest that malignant meningiomas have distinct DNA methylation patterns compared to their benign and atypical counterparts, and that the differentially methylated genes may serve as diagnostic biomarkers or candidate causal genes for malignant transformation.


Click To View

Additional Books

  • Plos One : Heat Shock Protein 70 Acts as... (by )
  • Plos One : Barriers and Facilitators of ... (by )
  • Plos One : Psychosocial Characteristics ... (by )
  • Plos One : Anti-hiv Double Variable Doma... (by )
  • Plos One : Routine Hiv Testing Among Pro... (by )
  • Plos One : Prolonged Induction Activates... (by )
  • Plos One : Specific Disruption of Tsc1 i... (by )
  • Plos One : the Effect of the Small India... (by )
  • Plos One : Range Expansion of the Jumbo ... (by )
  • Plos One : Evaluation of Different Refer... (by )
  • Plos One : Extensive Dissemination of Me... (by )
  • Plos One : Optimizing Frozen Sample Prep... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.