IntroductiontoAuthors
SPRING
MarkusMorkel
MarkusMorkelstudiedBiologyattheUniversityWürzburgandreceivedhisDr.rer.nat.inMolecularBiologyfromtheHumboldtUniversity,Berlin.HecontinuedhisresearchasapostdocinProfessorWalterBirchmeier′slabattheMax-Delbrück-Centrum(MDC)andasaresearchgroupleaderintheDepartmentofDevelopmentalBiologyattheMax-Planck-InstituteforMolecularGenetics.Hisresearchfocusisononcogenicsignaltransductionduringintestinalcancerinitiationandprogression,usingtransgenicmouseandorganotypictissueculturemodels.
Experimentalsample
SPRING
对正常B6小鼠的三个肠道样本,以及B6APCMin小鼠的三个正常肠道样本和五个腺瘤样本进行MeDIP-seq
Result
SPRING
1.MeDIP-seqanalysisofAPCMinadenomasrevealsalargenumberofDMRs
Figure1.Generationandvalidationofgenome-wideCpGmethylationmapsofAPCMinmousenormalandadenomatissues
为了确定正常组织和腺瘤甲基化差异,作者在鉴定的个DMR中,查看DMR分布,发现甲基化变化在基因组中分布不均。高甲基化和低甲基化的DMR在CpG岛、启动子和外显子区域高度富集。相反,在重复区、基因间区和内含子区观察到DMR的较低频率(图1c)。然而,在重复、基因间和内含子区域检测到的DMR占比最高。
挑取一个在腺瘤中具有高甲基化的Ush1g基因(图1be),使用bisulfitepyrosequencing来验证得到的MeDIP_seq数据是可靠的(图1c)。两种测序方法的相关性也很高(图1f)。
2.DNAhypermethylationinadenomasprevailsatPoly