Dietary intake of Lactobacillus rhamnosus HNOO1 enhances production of both Th1 and Th2 cytokines in antigen-primed mice.
Probiotic lactobacilli have been proposed as a potential oral bacteriotherapeutic means of modulating immune phenotype expression in vivo, via their ability to promote cytokine production. This study investigated the ability of a known interferon (IFN)gamma-promoting probiotic (Lactobacillus rhamnosus HNOOI) to modulate cytokine production in mice expressing an on-going Th2-type immune response. BALB/c mice were primed to ovalbumin in alum adjuvant to invoke antigen-specific Th2 cytokine-secreting cell populations. Mice that were fed Lb. rhamnosus HN001 during antigen sensitization produced higher levels of lymphocyte-derived IFNgamma, but also interleukin (IL)-4 and IL-5, in comparison to control animals. Although HN001 was additionally shown to induce pro-IFNgamma monokine (IL-12, IL-18) secretion in macrophages in vitro, its ability to invoke mixed lymphocyte cytokine production during an on-going Th2-type immune response in vivo suggests that this probiotic is a general immunostimulatory agent, in contrast to the pro-Th1/anti-Th2 immunoregulation reported for some strains of IFNgamma-promoting lactobacilli.
Milk & Health Research Centre, Institute of Food, Nutrition and Human Health, Massey University, Palmerston North, New Zealand. M.L.Cross@massey.ac.nz
Martin L
ML
Cross
Rikke R
RR
Mortensen
Jane
J
Kudsk
Harsharnjit S
HS
Gill
D000276:Adjuvants, Immunologic / Q000819:agonists / Q000378:metabolism; D000284:Administration, Oral; D000818:Animals; D016207:Cytokines / Q000096:biosynthesis*; D004306:Dose-Response Relationship, Immunologic; D005260:Female; D007371:Interferon-gamma / Q000032:analysis / Q000096:biosynthesis; D018664:Interleukin-12 / Q000032:analysis / Q000096:biosynthesis; D020382:Interleukin-18 / Q000032:analysis / Q000096:biosynthesis; D015847:Interleukin-4 / Q000032:analysis / Q000096:biosynthesis; D015848:Interleukin-5 / Q000032:analysis / Q000096:biosynthesis; D007778:Lactobacillus / Q000276:immunology / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D015846:Monokines / Q000032:analysis / Q000096:biosynthesis; D010047:Ovalbumin / Q000276:immunology; D019936:Probiotics / Q000008:administration & dosage; D018417:Th1 Cells / Q000276:immunology*; D018418:Th2 Cells / Q000276:immunology*
D000276:Adjuvants, Immunologic; D016207:Cytokines; D020382:Interleukin-18; D015848:Interleukin-5; D015846:Monokines; D018664:Interleukin-12; D015847:Interleukin-4; D007371:Interferon-gamma; D010047:Ovalbumin