S
Sanna Myöhänen
Researcher at Johns Hopkins University
Publications - 8
Citations - 8469
Sanna Myöhänen is an academic researcher from Johns Hopkins University. The author has contributed to research in topics: CpG site & DNA methylation. The author has an hindex of 8, co-authored 8 publications receiving 8307 citations. Previous affiliations of Sanna Myöhänen include University of Eastern Finland & Johns Hopkins University School of Medicine.
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Methylation-specific PCR: a novel PCR assay for methylation status of CpG islands
TL;DR: The use of MSP is demonstrated to identify promoter region hypermethylation changes associated with transcriptional inactivation in four important tumor suppressor genes (p16, p15, E-cadherin and von Hippel-Lindau) in human cancer.
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Synergy of demethylation and histone deacetylase inhibition in the re-expression of genes silenced in cancer.
TL;DR: Although DNA methylation and histone deacetylation appear to act as synergistic layers for the silencing of genes in cancer, dense CpG island methylation is dominant for the stable maintenance of a silent state at these loci.
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Mapping patterns of cpg island methylation in normal and neoplastic cells implicates both upstream and downstream regions in de novo methylation
TL;DR: Data suggest that boundaries exist at both ends of a CpG island to maintain the unmethylated state in normal tissue and that these boundaries may be progressively overridden, eliciting the de novo methylation associated with tumor suppressor gene silencing in neoplasia.
Journal Article
Hypermethylation Can Selectively Silence Individual p16ink4A Alleles in Neoplasia
TL;DR: In neoplastic cells, stable allele-specific loss of transcription may arise from aberrant methylation of a nonmutated promoter region, identifying hypermethylation as a direct mechanism for tumor suppressor gene inactivation.
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Sequence-specific DNA binding activity of RNA helicase A to the p16INK4a promoter.
Sanna Myöhänen,Stephen B. Baylin +1 more
TL;DR: RNA helicase A (RHA) is identified as a protein that binds much better to thep16INK4a promoter in the expressing cells and is shown to be a cellular substrate for caspase-3, which decreases its sequence-specific binding top16ink4a by cleavage of the N terminus.