Abstract
Abstract Alphoid centromere array is composed by 171 bp AT rich alphoid monomer that tandemly arranged into high order repeat unit up to 4 MB array. Hallmark of centromeric DNA is CENPB box, a 17 bp motif that is a binding site of CENPB. As the chromosomal site that regulates the precise and accurate chromosome segregation, understanding DNA replication in centromere will reveal insight into faithful chromosome segregation that potentially influence cellular behavior in normal and cancer cell. The present of active replicons within alphoid centromere array are detected by enrichment of nsDNA abundance. This finding is supported by evident of Orc2, Cdt1 and Treslin accumulation on the alphoid centromere array. Chromatin fiber analysis revealed that inter origin distance within alphoid centromere array is irregular. CENPB depletion that is affected centromeric chromatin structure enhances DNA replication activity within alphoid centromeric array, indicates centromeric chromatin landscape alteration affected centromeric DNA replication dynamic. Citation Format: Indri Erliandri. Replication of megabase-size alpha-satellite DNA arrays in human centromere [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 3471. doi:10.1158/1538-7445.AM2017-3471
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