PURPOSE: Staphylococcus Aureus Filtrate Preparation (SAFP) is a preparation of low-virulence strain of Staphylococcus aureus. In our study, we aimed to determine the anti-tumor activity of SAFP in vivo and explore the potential mechanism. METHODS: Our study evaluated the anti-tumor activity of SAFP in four cancer cell models in vivo and determined its up-regulatory effects on mice immune system in vivo. RESULTS: It showed that 7.2 ng/10 g SAFP could inhibit the progression of murine hepatoma H22 and sarcoma S180, and the tumor inhibition rates achieved 48.1 and 35.7%, respectively. In human non-small cell lung cancer A549 and hepatoma BEL7402 xenograft athymic mice models, T/C of 7.2 ng/10 g SAFP group reached 41.0% in A549 model and 21.0% in BEL7402 model. Meanwhile, SAFP also significantly increased the proliferation of cultured mice splenocytes to 162.1%, and 7.2 ng/kg SAFP significantly (P < 0.001) raised the activity of NK cells, elevated the serum level of IL-2, TNF-alpha and IFN-gamma in mice. CONCLUSION: SAFP exhibited high efficiency in inhibiting the growth of cancer cells in a dose-dependent manner, which possibly attributed to its regulatory effects of immune system.
PURPOSE:Staphylococcus Aureus Filtrate Preparation (SAFP) is a preparation of low-virulence strain of Staphylococcus aureus. In our study, we aimed to determine the anti-tumor activity of SAFP in vivo and explore the potential mechanism. METHODS: Our study evaluated the anti-tumor activity of SAFP in four cancer cell models in vivo and determined its up-regulatory effects on mice immune system in vivo. RESULTS: It showed that 7.2 ng/10 g SAFP could inhibit the progression of murinehepatoma H22 and sarcoma S180, and the tumor inhibition rates achieved 48.1 and 35.7%, respectively. In humannon-small cell lung cancer A549 and hepatoma BEL7402 xenograft athymicmice models, T/C of 7.2 ng/10 g SAFP group reached 41.0% in A549 model and 21.0% in BEL7402 model. Meanwhile, SAFP also significantly increased the proliferation of cultured mice splenocytes to 162.1%, and 7.2 ng/kg SAFP significantly (P < 0.001) raised the activity of NK cells, elevated the serum level of IL-2, TNF-alpha and IFN-gamma in mice. CONCLUSION: SAFP exhibited high efficiency in inhibiting the growth of cancer cells in a dose-dependent manner, which possibly attributed to its regulatory effects of immune system.
Authors: Adam D Cohen; Adi Diab; Miguel-Angel Perales; Jedd D Wolchok; Gabrielle Rizzuto; Taha Merghoub; Deonka Huggins; Cailian Liu; Mary Jo Turk; Nicholas P Restifo; Shimon Sakaguchi; Alan N Houghton Journal: Cancer Res Date: 2006-05-01 Impact factor: 12.701
Authors: M J Robertson; R J Soiffer; S F Wolf; T J Manley; C Donahue; D Young; S H Herrmann; J Ritz Journal: J Exp Med Date: 1992-03-01 Impact factor: 14.307