Altered frequency of initiation sites of DNA replication in Werner's syndrome cells.

Abstract

DNA replication of cultured fibroblasts of early passage derived from Werner's syndrome (adult progeria) patients and from normal subjects were compared by DNA fiber autoradiography. The frequency of replication initiation was decreased in Werner's syndrome cells derived from five patients compared with that in normal cells derived from three persons of different ages. The rate of DNA chain elongation did not differ between Werner's syndrome cells and normal cells.