Immune-enhancing effect of nanometric Lactobacillus plantarum nF1 (nLp-nF1) in a mouse model of cyclophosphamide-induced immunosuppression.
J Microbiol Biotechnol. 2017 Nov 15. Epub 2017 Nov 15. PMID: 29141128
Nanometric Lactobacillus plantarum nF1 (nLp-nF1) is a biogenics consisting of dead L. plantarum pre-treated with heat and a nanodispersion process. In this study, we investigated the immune-enhancing effects of nLp-nF1 in vivo and in vitro. To evaluate the immunostimulatory effects of nLp-nF1, mice immunosuppressed by cyclophosphamide (CPP) treatment were administered with nLp-nF1. As expected, CPP restricted the immune response of mice, whereas oral administration of nLp-nF1 significantly increased total IgG in serum, and cytokine production [interleukin-12 (IL-12) and tumor necrosis factor alpha (TNF-α)] in bone marrow cells. Furthermore, nLp-nF1 enhanced the production of splenic cytokines such as IL-12, TNF-α, and interferon gamma (IFN-γ). In vitro, nLp-nF1 stimulated the immune response by enhancing the production of cytokines such as IL-12, TNF-α, and IFN-γ. Moreover, nLp-nF1 given a food additive enhanced the immune responses when combined with various food materials on in vitro. These results suggest that nLp-nF1 could be used to strengthen the immune system and recover normal immunity in people with a weaker immune system, such as children, the elderly, and patients.