Abstract:
:Unmethylated CpG-ODN are known to enhance Th1-type immune response. However, optimal sequences of CpG-ODN for activating Th1-type immune cells vary among species. It is necessary to identify the effective CpG-ODN sequences in each species. In the present study, in order to identify the sequences of CpG-ODN that produce fIFN-γ in cats, 14 kinds of ODN were synthesized and examined regarding their ability to induce fIFN-γ in feline PBMC and splenocytes. It was shown that some CpG-ODN significantly induced fIFN-γ production in splenocytes, but not in PBMC. We found that three kinds of CpG-ODN (no. 2, 5'-ggTGCATCGATGCAGggggG-3'; no. 5, 5'-ggTGCGTCGACGCAGggggG-3'; no. 10, 5'-ggTGCTACGTAGCAGggggG-3') specifically and significantly induced fIFN-γ production in feline splenocytes. The reverse sequences, GpC-ODN, do not cause significant fIFN-γ production. The fIFN-γ production inductivity of a mixture of CpG-ODN nos. 2, 5 and 10 was higher than those of individual CpG-ODN. When the CpG-ODN mixture was encapsulated in an MCL and administrated to cats, the number of fIFN-γ(+) cells in PBMC significantly increased. CpG-ODN nos. 2, 5 and 10 should be useful to elicit a Th1-type immune response as a vaccine adjuvant in cats.
journal_name
Microbiol Immunoljournal_title
Microbiology and immunologyauthors
Satoh R,Kotake M,Takano T,Motokawa K,Gemma T,Watanabe R,Arai S,Hohdatsu Tdoi
10.1111/j.1348-0421.2010.00298.xsubject
Has Abstractpub_date
2011-03-01 00:00:00pages
184-90issue
3eissn
0385-5600issn
1348-0421journal_volume
55pub_type
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