کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9008168 | 1122740 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Prior exposure to the carrier regulates rat immune responses to a conjugate vaccine
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
ایمنی شناسی و میکروب شناسی
ایمونولوژی
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چکیده انگلیسی
Small vaccine antigens including peptides generally need to be linked to larger molecules or carriers in order to induce high levels of immune responses. The potential of unwanted immune responses to the carriers represents a major drawback for the conjugated vaccines. The carriers could also regulate the immune responses to the haptens and these effects need to be prevented in order to achieve adequate responses to the vaccines. We examined means to reduce the unwanted reactions to the carrier. For this purpose, we investigated whether prior exposure of rats to a human IgG1 (hIgG1) carrier would affect their subsequent responses to an OVA peptide (i.e., OVA173-196). Prior exposure to the hIgG1 carrier did not affect the T cell responses to the peptide antigen. However, IgG1 Ab responses to the peptide antigen were enhanced while IgE Abs were reduced. These results show that responses to the hapten are not systematically relevant to the carrier pre-immunization and that the conjugate could achieve desired responses by selective immune responses suppression. Such models of vaccines with enhanced anti-hapten responses and reduced levels of potentially harmful responses could be of great interest for the development of new immune therapies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Immunopharmacology - Volume 5, Issue 11, October 2005, Pages 1633-1640
Journal: International Immunopharmacology - Volume 5, Issue 11, October 2005, Pages 1633-1640
نویسندگان
Imed Ben Nasser, Fatma Fennira-ben Aïssa, Prosper N. Boyaka, Moncef Jeddi, Daniel Tome,