Title |
Oral delivery of Lactococcus lactis that secretes bioactive heme oxygenase-1 alleviates development of acute colitis in mice
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Published in |
Microbial Cell Factories, November 2015
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DOI | 10.1186/s12934-015-0378-2 |
Pubmed ID | |
Authors |
Suguru Shigemori, Takafumi Watanabe, Kai Kudoh, Masaki Ihara, Shireen Nigar, Yoshinari Yamamoto, Yoshihito Suda, Takashi Sato, Haruki Kitazawa, Takeshi Shimosato |
Abstract |
Mucosal delivery of therapeutic proteins using genetically modified strains of lactic acid bacteria (gmLAB) is being investigated as a new therapeutic strategy. We developed a strain of gmLAB, Lactococcus lactis NZ9000 (NZ-HO), which secretes the anti-inflammatory molecule recombinant mouse heme oxygenase-1 (rmHO-1). The effects of short-term continuous oral dosing with NZ-HO were evaluated in mice with dextran sulfate sodium (DSS)-induced acute colitis as a model of inflammatory bowel diseases (IBD). We identified the secretion of rmHO-1 by NZ-HO. rmHO-1 was biologically active as determined with spectroscopy. Viable NZ-HO was directly delivered to the colon via oral administration, and rmHO-1 was secreted onto the colonic mucosa in mice. Acute colitis in mice was induced by free drinking of 3 % DSS in water and was accompanied by an increase in the disease activity index score and histopathological changes. Daily oral administration of NZ-HO significantly improved these colitis-associated symptoms. In addition, NZ-HO significantly increased production of the anti-inflammatory cytokine interleukin (IL)-10 and decreased the expression of pro-inflammatory cytokines such as IL-1α and IL-6 in the colon compared to a vector control strain. Oral administration of NZ-HO alleviates DSS-induced acute colitis in mice. Our results suggest that NZ-HO may be a useful mucosal therapeutic agent for treating IBD. |
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Unknown | 1 | 100% |
Demographic breakdown
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
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United States | 1 | 1% |
India | 1 | 1% |
Unknown | 74 | 96% |
Demographic breakdown
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Student > Ph. D. Student | 17 | 22% |
Student > Master | 11 | 14% |
Researcher | 6 | 8% |
Student > Bachelor | 6 | 8% |
Student > Doctoral Student | 4 | 5% |
Other | 15 | 19% |
Unknown | 18 | 23% |
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Agricultural and Biological Sciences | 16 | 21% |
Immunology and Microbiology | 12 | 16% |
Medicine and Dentistry | 3 | 4% |
Engineering | 2 | 3% |
Other | 6 | 8% |
Unknown | 21 | 27% |