The present invention provides
cell lines for the production of E1-deleted adenovirus (rAd) vectors that complement E1A and E1B functions. The present invention also provides
cell lines for the production of E1- and E2-deleted adenovirus vectors that complement E1A, E1B and E2B
polymerase functions. The invention provides particular
cell lines that complement E1A function by
insertion of an E1A sequence containing mutations in the 243R and 289R proteins and an E1B sequence comprising the E1B-55K
gene. Production yields in the resulting producer cell lines, designated SL0003 and SL0006, were similar to those obtained from 293 cells without generation of detectable recombinant replication competent adenovirus (“RCA”).