The present application relates to the fields of microbial technology and tumor biological therapy, and particularly relates to a
bacillus pumilus and application thereof, a
protein preparation and a microbial preparation. The
bacillus pumilus is named
bacillus pumilus BP01, is isolated from the
oral cavity of healthy people, and is preserved in China Center for Type Culture Collection on April 2, 2026, with a preservation number of CCTCC NO: M2026574. The 16S rRNA
gene sequence of the bacillus pumilus is SEQ ID NO: 1. Compared with the prior art, the bacillus pumilus of the present application is derived from the normal
oral cavity of people and has high safety. The culture product of the bacillus pumilus can significantly inhibit the proliferation and clonogenic ability of hepatocarcinoma, hepatoblastoma,
colorectal cancer,
bladder cancer and
endometrial cancer cells. In an
in vivo animal model, the bacillus pumilus shows stable anti-tumor effect and does not cause obvious toxic side effects. The bacillus pumilus can be used as a live bacterial preparation, and can also play an anti-tumor role through culture supernatant or metabolic products, and has flexible application forms. The bacillus pumilus has good clinical transformation and industrial application prospects.