293 cell cycle synchronisation adenovirus vector production

Immobilization of 293 cells using porous support particles for adenovirus vector production.

Adenovirus vector production by anchorage-independent 293 cells immobilized using porous biomass support particles (BSPs) was investigated in static and shake-flask cultures for efficient large-scale production of adenovirus vectors for gene therapy applications. The density of cells immobilized within BSPs was evaluated by measuring their WST-8 (2-(2-methoxy-4-nitrophenyl)-3-(4-nitrophenyl)-5-...

Adenovirus and cell cycle control.

Adenovirus infection of quiescent cells induces transition from G0 or G1 into the S phase of the cell cycle and allows cellular proliferation. This is beneficial for the virus since cells in S phase provide optimal conditions for viral replication. Adenovirus E1A, E1B and E4 gene products contribute to cell cycle deregulation. E1A proteins inactivate the pRb checkpoint, allowing the E2F transcr...

Cell cycle arrest and inhibition of tumor cell proliferation by the p16INK4 gene mediated by an adenovirus vector.

The p16INK4 (MTS1) gene has many features of a tumor suppressor gene. It maps to 9p21, a region of frequent loss of heterozygosity in a variety of tumor types. It encodes an inhibitor of cyclin-dependent kinase 4, and its homozygous deletion is common in tumor-derived cell lines. To examine its tumor suppressive function and its potential in cancer gene replacement therapy, wild-type p16INK4 wa...

International Synchronisation of the Pork Cycle

Selection of nonfastidious adenovirus species in 293 cells inoculated with stool specimens containing adenovirus 40.

Of 35 stool specimens isolated and examined in 293 cells, 15 isolates contained adenovirus species 40 (Ad40), and 4 of these 15 isolates also contained a nonfastidious adenovirus species (Ad1 in two cases, Ad18 or Ad31) which was selected over Ad40 during serial passage in the 293 cells. The selection of Ad1 over Ad40 was examined in detail. Restriction analysis of intracellular DNA and the rel...