This JAMA Patient Page explains how the Johnson & COVID-19 vaccine, likely to be third SARS-CoV-2 vaccine approved for widespread use, uses an adenovirus 26 vector deliver coronavirus DNA host cells produce spike proteins and safely effectively induce immunity.

We examined the therapeutic efficacy of xenogenic human N'-terminal neu DNA vaccine and autologous mouse N'-terminal neu DNA vaccine on MBT-2 tumor cells in C3H mice. Intramuscular injection of xenogenic and autologous neu DNA vaccines produced comparable therapeutic efficacies. Mouse and human N'-neu DNA vaccine induced tumor infiltration of CD8(+) T cells, while the human vaccine was less eff...

background and aims: glycoprotein b (gb) is among the most important immunogenic proteins of hsv-1 that is now being used as recombinant vaccine to induce protectively against the virus. it is believed that gb is responsible for induction of neutralizing antibody and up to 90% of ctl (cytotoxic t cell) activity against hsv-1 in some haplotypes. methods: in the present study the antibody titer i...

conclusions mtb32c and hbha genes were successfully isolated from h37rv genome and cloned into an eukaryotic expression vector. this vector can be considered as a vaccine to evaluate immune responses in animal models. results in the current study, recombinant pcdna3.1 (+) vector containing mtb32c and hbha genes was successfully constructed. the desired size of dna fragment was observed using si...

background: development of an effective vaccine is highly needed in order to restrict the aids pandemic. dna vaccines initiate both arms of immunity without the potential of causing disease. hiv-1 p24 and gp41 (gag and env) proteins play important roles in viral pathogenesis and are effective candidates for immune induction and vaccine design. objective: in this study, new dna vaccine candidate...

This study examined the adjuvant effects of dimethyl dioctadecyl ammonium bromide (DDA), CpG oligodeoxynucleotides (CpG-ODN), and chicken interferon-gamma (ChIFN-gamma) on a DNA vaccine (pcDNA-VP243) against the infectious bursal disease virus (IBDV). A plasmid encoding chicken IFN-ã was constructed. Twice at 2-week intervals, two-week-old chickens were injected intramuscularly and intraperiton...

bovine brucellosis is a zoonotic disease distributed worldwide and characterized by abortion and reducedfertility in cows. since brucellosis eradication programme in iran uses vaccination, test, slaughter andquarantine as control measures, it is essential to distinguish vaccine strains from strains that cause infectionsamong vaccinated cattle herds. we developed and evaluated a multiplex polyme...

Comparative Evaluation of Mx and Alum as Bio Conventional Adjuvants in Inducing Immune Responses by Influenza DNA Vaccine

Objective(s): Toxoplasma gondii is an obligate intracellular protozoan parasite that causes toxoplasmosis in humans and animals. Micronemes (MICs) are effective candidates for DNA vaccine. Materials and Methods: In this study, we evaluated the immune response of BALB/c mice against MIC3 gene of Toxoplasma gondii and interleukin 12 (IL-12...