Publication Date:
2010-12-18
Description:
Medulloblastoma (MB) is the most common malignant brain tumor of children. To identify the genetic alterations in this tumor type, we searched for copy number alterations using high-density microarrays and sequenced all known protein-coding genes and microRNA genes using Sanger sequencing in a set of 22 MBs. We found that, on average, each tumor had 11 gene alterations, fewer by a factor of 5 to 10 than in the adult solid tumors that have been sequenced to date. In addition to alterations in the Hedgehog and Wnt pathways, our analysis led to the discovery of genes not previously known to be altered in MBs. Most notably, inactivating mutations of the histone-lysine N-methyltransferase genes MLL2 or MLL3 were identified in 16% of MB patients. These results demonstrate key differences between the genetic landscapes of adult and childhood cancers, highlight dysregulation of developmental pathways as an important mechanism underlying MBs, and identify a role for a specific type of histone methylation in human tumorigenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3110744/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3110744/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parsons, D Williams -- Li, Meng -- Zhang, Xiaosong -- Jones, Sian -- Leary, Rebecca J -- Lin, Jimmy Cheng-Ho -- Boca, Simina M -- Carter, Hannah -- Samayoa, Josue -- Bettegowda, Chetan -- Gallia, Gary L -- Jallo, George I -- Binder, Zev A -- Nikolsky, Yuri -- Hartigan, James -- Smith, Doug R -- Gerhard, Daniela S -- Fults, Daniel W -- VandenBerg, Scott -- Berger, Mitchel S -- Marie, Suely Kazue Nagahashi -- Shinjo, Sueli Mieko Oba -- Clara, Carlos -- Phillips, Peter C -- Minturn, Jane E -- Biegel, Jaclyn A -- Judkins, Alexander R -- Resnick, Adam C -- Storm, Phillip B -- Curran, Tom -- He, Yiping -- Rasheed, B Ahmed -- Friedman, Henry S -- Keir, Stephen T -- McLendon, Roger -- Northcott, Paul A -- Taylor, Michael D -- Burger, Peter C -- Riggins, Gregory J -- Karchin, Rachel -- Parmigiani, Giovanni -- Bigner, Darell D -- Yan, Hai -- Papadopoulos, Nick -- Vogelstein, Bert -- Kinzler, Kenneth W -- Velculescu, Victor E -- CA057345/CA/NCI NIH HHS/ -- CA096832/CA/NCI NIH HHS/ -- CA118822/CA/NCI NIH HHS/ -- CA121113/CA/NCI NIH HHS/ -- CA135877/CA/NCI NIH HHS/ -- GM074906-01A1/GM/NIGMS NIH HHS/ -- HHSN261200800001E/PHS HHS/ -- P01 CA096832/CA/NCI NIH HHS/ -- P01 CA096832-03/CA/NCI NIH HHS/ -- R01 CA108622/CA/NCI NIH HHS/ -- R01 CA121113/CA/NCI NIH HHS/ -- R01 CA121113-05/CA/NCI NIH HHS/ -- R37 CA057345/CA/NCI NIH HHS/ -- R37 CA057345-20/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2011 Jan 28;331(6016):435-9. doi: 10.1126/science.1198056. Epub 2010 Dec 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ludwig Center for Cancer Genetics and Therapeutics and Howard Hughes Medical Institute, Johns Hopkins Kimmel Cancer Center, Baltimore, MD 21231, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21163964" target="_blank"〉PubMed〈/a〉
Keywords:
Adult
;
Cerebellar Neoplasms/*genetics/metabolism
;
Child
;
DNA Copy Number Variations
;
DNA-Binding Proteins/genetics/metabolism
;
*Genes, Neoplasm
;
Genes, Tumor Suppressor
;
Histone-Lysine N-Methyltransferase/genetics/metabolism
;
Histones/metabolism
;
Humans
;
Medulloblastoma/*genetics/metabolism
;
Methylation
;
MicroRNAs/genetics
;
*Mutation
;
Neoplasm Proteins/genetics/metabolism
;
Oligonucleotide Array Sequence Analysis
;
Point Mutation
;
Sequence Analysis, DNA
;
Signal Transduction
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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