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2001 MAR 21 - (NewsRx.com & NewsRx.net) --
by N.R. Saltmarsh, staff medical writer -- A vaccine that inhibits the growth of human papillomavirus 16 (HPV16) in mice may ultimately be used to help women stimulate their own immune systems to fight off the infection that causes cervical cancer.
Researchers have theorized that some women are naturally able to resist infection with HPV16 with the help of anti-HPV16-specific antibodies, though no adequate experimental model exists to test the theory.
"Induction of HPV16-specific cell-mediated immunity in the genital mucosa could improve the efficacy of a vaccine and a mucosal route of immunization might be necessary to do so," suggested V. Revaz and colleagues.
Previous studies have shown that systemic immunization of mice with HPV16 virus-like particles (VLPs) protects them from subsequent challenge with the virus. In this experiment, researchers used an intranasal vaccine ("Mucosal vaccination with a recombinant Salmonella typhimurium expressing human papillomavirus type 16 (HPV16) L1 virus-like particles (VLPs) or HPV16VLPs purified from insect cells inhibits the growth of HPV16-expressing tumor cells in mice," ...
Source: HighBeam Research, Nasal Vaccine Against Human Papillomavirus May Prevent...