PMID- 9847373 OWN - NLM STAT- MEDLINE DCOM- 19990128 LR - 20200724 IS - 0022-538X (Print) IS - 1098-5514 (Electronic) IS - 0022-538X (Linking) VI - 73 IP - 1 DP - 1999 Jan TI - Human cytomegalovirus UL69 protein induces cells to accumulate in G1 phase of the cell cycle. PG - 676-83 AB - Earlier studies have revealed that human cytomegalovirus rapidly inhibits the growth of fibroblasts, blocking cell cycle progression at multiple points, including the G1-to-S-phase transition. The present study demonstrates that the UL69 protein, a virus-encoded constituent of the virion, is able to arrest cell cycle progression when introduced into uninfected cells. Expression of the UL69 protein causes U2 OS cells and primary human fibroblasts to accumulate within the G1 compartment of the cell cycle, and serum fails to induce the progression of quiescent human fibroblasts into the S phase when the protein is present. Therefore, the UL69 protein is at least partially responsible for the cell cycle block that is instituted after infection of permissive cells with human cytomegalovirus. FAU - Lu, M AU - Lu M AD - Department of Molecular Biology, Howard Hughes Medical Institute, Princeton University, Princeton, New Jersey 08544-1014, USA. FAU - Shenk, T AU - Shenk T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Virol JT - Journal of virology JID - 0113724 RN - 0 (ICP27 protein, human herpesvirus 1) RN - 0 (Immediate-Early Proteins) SB - IM MH - Cytomegalovirus/*physiology/radiation effects MH - G1 Phase MH - Humans MH - Immediate-Early Proteins/*physiology MH - S Phase MH - Ultraviolet Rays PMC - PMC103874 EDAT- 1998/12/16 00:00 MHDA- 1998/12/16 00:01 PMCR- 1999/01/01 CRDT- 1998/12/16 00:00 PHST- 1998/12/16 00:00 [pubmed] PHST- 1998/12/16 00:01 [medline] PHST- 1998/12/16 00:00 [entrez] PHST- 1999/01/01 00:00 [pmc-release] AID - 1321 [pii] AID - 10.1128/JVI.73.1.676-683.1999 [doi] PST - ppublish SO - J Virol. 1999 Jan;73(1):676-83. doi: 10.1128/JVI.73.1.676-683.1999.