TAILIEUCHUNG - Báo cáo y học: " GM-CSF and IL-2 as adjuvant enhance the immune effect of protein vaccine against foot-and-mouth disease"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: GM-CSF and IL-2 as adjuvant enhance the immune effect of protein vaccine against foot-and-mouth disease | Zhang et al. Virology Journal 2011 8 7 http content 8 1 7 J VIROLOGY JOURNAL RESEARCH Open Access GM-CSF and IL-2 as adjuvant enhance the immune effect of protein vaccine against foot-and-mouth disease Can Zhang1 3 Bin Wang2 Ming Wang 1 Abstract Background Cytokines as molecular adjuvant play a critical role in differentiation of effector T cell subsets and in determination of the magnitude of the response after vaccination. In this study we investigated the effects of GM-CSF and IL-2 as adjuvant on the immune responses of VP1 recombinant protein as a model antigen for foot and mouth disease. Results Six expression plasmids were constructed and expressed in E. coli BL21. In guinea pigs the immunological and molecular effects of the fusion proteins were determined by ELISA LPA DTH and semi-quantitative Reverse Transcriptase PCR RT-PCR . The data revealed that IL-2 and GM-CSF as adjuvant of VP1 could stimulate both humoral and cell-mediated immune response. Interestingly IL-2 and GM-CSF either as a co-expressed protein or as a mixture of two single proteins showed much better adjuvant effects than that of single one. Conclusions IL-2 and GM-CSF could be used as a potential adjuvant for VP1 and had synergistic effect when co-expressed or mixed with VP1. Background In recent years there has been significant progress in the development of candidate vaccines against foot and mouth disease virus FMDV in the forms of both whole virus and recombinant proteins. Practical application of these vaccines however has often been limited by the lack of suitable adjuvant capable of stimulating an appropriate immune response in the absence of adverse reactions. Many compounds with adjuvant activity have been identified but none has been emerged as being universally superior 1 2 . Although adjuvant such as alum adjuvant has been widely used with vaccines for many years 3 alum does not effectively augment immune response necessary for a number of new subunit protein .

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