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Immunostimulatory oligodeoxynucleotide from Bifidobacterium longum suppresses Th2 immune responses

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Strict Standards: Accessing static property SefAdvanceConfig::$sef_cache as non static in /home/customer/www/ei-resource.org/public_html/components/com_sefadvance/config.php on line 289

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Immunostimulatory oligodeoxynucleotide from Bifidobacterium longum suppresses Th2 immune responses

 

 

 

Clin Exp Immunol. 2006 Jul;145(1):130-8.

 

Immunostimulatory oligodeoxynucleotide from Bifidobacterium longum suppresses Th2 immune responses in a murine model.

 

Takahashi N, Kitazawa H, Iwabuchi N, Xiao JZ, Miyaji K, Iwatsuki K, Saito T. Food Research and Development Laboratory, Morinaga Milk Industry Co. Ltd, Zama, Japan. This email address is being protected from spambots. You need JavaScript enabled to view it.

 

We have reported previously that novel immunostimulatory sequence (ISS) oligodeoxynucleotide (ODN) BL07S from a probiotic strain of Bifidobacterium longum inhibited immunoglobulin (Ig) E production in vitro. However, whether ISS-ODNs from probiotics regulate T helper type 2 (Th2)-polarized immune reactions in vivo remains unclear. To evaluate the inhibitory effects of ODN BL07S on type I allergic response, BALB/c mice were injected with or without ODN BL07S in the presence of ovalbumin (OVA) on days 0 and 14. Serum Ig levels (IgE, IgG1 and IgG2a) and cytokine levels (interferon (IFN)-gamma, interleukin (IL)-12, IL-4, IL-5, IL-10 and IL-13) were investigated in splenocyte cultures from days 14-28. Production of OVA-specific and total IgE were significantly suppressed by administration of ODN BL07S, but not by ODN BL06S, a non-ISS-ODN. Compared to controls, ODN BL07S induced significantly lower levels of Th2 cytokines (IL-4 and IL-5) in splenocyte cultures, and significantly higher levels of serum OVA-specific IgG2a. These effects of ODN BL07S on modulation of Th2 immune response were dose-dependent. The present results demonstrate that ODN BL07S from genomic DNA of B. longum BB536 prevents antigen-induced Th2 immune responses in vivo, suggesting that ISS-ODNs from probiotics might be useful in preventing allergic disease.

 

PMID: 16792683 [PubMed - indexed for MEDLINE]

 

Full Article Available Online

 


 

 

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