نوع مقاله : مقاله های پژوهشی
نویسندگان
1 دانشجوی دکتری، گروه میکروبیولوژی، واحد علوم پزشکی تهران، دانشگاه آزاد اسلامی، تهران، ایران
2 دانشیار، گروه میکروبیولوژی، واحد علوم پزشکی تهران، دانشگاه آزاد اسلامی، تهران، ایران
3 دانشیار، مرکز تحقیقات بیوتکنولوژی، دانشگاه علوم پزشکی تهران، تهران، ایران
4 استادیار، گروه تحقیق و توسعه، مجتمع تحقیقات و تولید، انستیتو پاستور ایران، تهران، ایران
چکیده
تازه های تحقیق
فاطمه خسروانی پور: Google Scholar
ستاره حقیقت: Google Scholar
محمد حسین یزدی: Google Scholar
سیدمهدی حسن زاده: Google Scholar
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background: Staphylococcus aureus causes various hospital-acquired infections and contributes to increased mortality. Vaccination is an effective method to combat these infections. Iron plays an essential role in bacterial pathogenesis. The IsdE protein, an iron (heme) transporter, is a promising vaccine development candidate. This study investigates the effect of BCG performance along with synthetic nano selenium as a booster in formulating a candidate vaccine against Staphylococcus aureus based on IsdE protein and the role of MF59 adjuvant.
Methods: After expressing the IsdE protein using IPTG, a one-millimolar nickel column was used for purification. The vaccine formulation, incorporating the adjuvants MF59, BCG, and synthetic nano-selenium, was prepared and administered subcutaneously in three doses, with two-week intervals, to five groups of Balb/C mice. The levels of total IgG and IgG1 and IgG2a isotypes were measured using ELISA. The mice were challenged with a bacterial dose of 5 × 108 CFU. The bacterial load in internal organs was counted, and animal survival was monitored for 30 days.
Findings: Total IgG and the IgG1 and IgG2a isotypes showed a significant increase in all groups receiving the vaccine candidate compared to the control group. The bacterial load in internal organs (liver, kidneys, and spleen) and the mortality rate in the IsdE+MF59+BCG+Nano-selenium group were significantly reduced compared to the other immunized and control groups.
Conclusion: The results demonstrated that the adjuvant MF59, BCG, and synthetic nano-selenium boosters enhance humoral immunity against Staphylococcus aureus infection.
کلیدواژهها [English]