Objective: To construct a recombinant adenovirus(rAdCDES) which is capable of both direct and indirect treatment to mammary cancer and enhancement to the antitumor effect of radiation. Methods: A method of homologous recombination in bacteria was used to construct prAdCDglyES. The recombination adenovirus was transfected to 293 cells by liposome, in which rAdCDES was packaged and generated. The growth curve and MTT methods was used to detect the growth inhibition effect of rAdCDES on MCF-7; rAdCDES was directly injected into established MA737 tumors-bearing mice for observing difference in tumor size and survival days of mice and enhancement of the antitumor effect of radiation. Results: The inhibiting rate of rAdCDES on MCF-7 cell was (83. 1?8. 1)% and had significant difference compared with control was (19.2 ? 7.8)% (P

To construct a recombinant adenovirus containing CDglyES fusion gene, which can directly inhibit human ovarian cancer cell and indirectly inhibit vascular endothelial cell growth. Methods:We constructed prAdCDglyES using a homolo-gous recombination method in bacteria. The prAdCDglyES was transfected to 293 packaging cells using liposome, in which rAdCDgly-ES was packaged and amplified. MTT was used to observe the proliferation inhibition effect of rAdCDglyES on human ovarian cancer cells and the growth inhibition effect of expressing products of rAdCDglyES on ECV-304. Results:The titer of rAdCDglyES was 1 × 1013.3 TCID50/L, whereas the inhibition rate on human ovarian cancer cell SKOV-3 was (83.1±6.3)%. This result is significantly different from the control rAd-LacZ, which had an inhibition rate of (24.1 ± 13.2)% (P<0.01). The concentrated culture supernatant from cells transfected with rAdCDglyES can inhibit ECV-304 cell proliferation at a rate of (78.7 ± 1.6)%. This rate is significantly different com-pared with that of the control with the same concentration of culture supernatant from cells transfected with rAd-CD, with an effect on ECV-304 cell shown by an inhibition rate of (23.9 ± 9.7)%(P<0.01). Conclusion:The results showed that the recombinant adenovirus rAdCDglyES could inhibit human ovarian cancer cells directly and indirectly.