PMID- 37894222 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231030 IS - 2076-2607 (Print) IS - 2076-2607 (Electronic) IS - 2076-2607 (Linking) VI - 11 IP - 10 DP - 2023 Oct 15 TI - Differential Immune-Modulating Activities of Cell Walls and Secreted Metabolites from Probiotic Bacillus coagulans JBI-YZ6.3 under Normal versus Inflamed Culture Conditions. LID - 10.3390/microorganisms11102564 [doi] LID - 2564 AB - Spore-forming probiotic bacteria, including Bacillus coagulans, are resilient and produce a variety of beneficial metabolites. We evaluated the immune-modulating effects of the novel probiotic strain Bacillus coagulans JBI-YZ6.3, where the germinated spores, metabolite fraction, and cell wall fraction were tested in parallel using human peripheral blood mononuclear cell cultures under both normal and lipopolysaccharide-induced inflamed culture conditions. The expression of CD25 and CD69 activation markers was evaluated via flow cytometry. Supernatants were tested for cytokines, interferons, chemokines, and growth factors using Luminex arrays. The germinated spores were highly immunogenic; both the cell wall and metabolite fractions contributed significantly. Under normal culture conditions, increased levels of immune activation were observed as increased expressions of CD25 and CD69 relative to natural killer cells, suggesting an increased ability to attack virus-infected target cells. On monocytes, a complex effect was observed, where the expression of CD25 increased under normal conditions but decreased under inflamed conditions. This, in combination with increased interleukin-10 (IL-10) and decreased monocyte chemoattractant protein-1 (MCP-1) production under inflamed conditions, points to anti-inflammatory effects. The production of the stem cell-related growth factor granulocyte colony-stimulating Factor (G-CSF) was enhanced. Further research is warranted to characterize the composition of the postbiotic metabolite fraction and document the characteristics of immunomodulating agents secreted by this probiotic strain. FAU - Iloba, Ifeanyi AU - Iloba I AUID- ORCID: 0000-0001-9179-8369 AD - NIS Labs, 1437 Esplanade, Klamath Falls, OR 97601, USA. FAU - McGarry, Sage V AU - McGarry SV AUID- ORCID: 0000-0003-4382-2605 AD - NIS Labs, 807 St. George St., Port Dover, ON N0A 1N0, Canada. FAU - Yu, Liu AU - Yu L AUID- ORCID: 0000-0003-3204-2259 AD - NIS Labs, 807 St. George St., Port Dover, ON N0A 1N0, Canada. FAU - Cruickshank, Dina AU - Cruickshank D AD - NIS Labs, 807 St. George St., Port Dover, ON N0A 1N0, Canada. FAU - Jensen, Gitte S AU - Jensen GS AUID- ORCID: 0000-0002-9497-1750 AD - NIS Labs, 1437 Esplanade, Klamath Falls, OR 97601, USA. LA - eng GR - na/Jeneil Biotech/ PT - Journal Article DEP - 20231015 PL - Switzerland TA - Microorganisms JT - Microorganisms JID - 101625893 PMC - PMC10609156 OTO - NOTNLM OT - T cells OT - anti-inflammatory OT - chemokines OT - cytokines OT - granulocyte colony-stimulating factor (G-CSF) OT - monocytes OT - natural killer (NK) cells COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; or in the writing of the manuscript. The funders supported the decision to publish the results. EDAT- 2023/10/28 11:43 MHDA- 2023/10/28 11:44 PMCR- 2023/10/15 CRDT- 2023/10/28 01:14 PHST- 2023/09/16 00:00 [received] PHST- 2023/10/06 00:00 [revised] PHST- 2023/10/12 00:00 [accepted] PHST- 2023/10/28 11:44 [medline] PHST- 2023/10/28 11:43 [pubmed] PHST- 2023/10/28 01:14 [entrez] PHST- 2023/10/15 00:00 [pmc-release] AID - microorganisms11102564 [pii] AID - microorganisms-11-02564 [pii] AID - 10.3390/microorganisms11102564 [doi] PST - epublish SO - Microorganisms. 2023 Oct 15;11(10):2564. doi: 10.3390/microorganisms11102564.