Sonochemical incorporated of cytosine in Cu-H2bpdc as an antibacterial agent against standard and clinical strains of Proteus mirabilis with rsbA gene

•The cytosine incropped Cu based metal-organic framework (cytosine-MOF) was synthesized by facile one-step sonochemical method.•rsbA gene expression in clinical and standard strains of Pseudomonas aeruginosa (PAO-1).•MIC and MBC against Proteus mirabilis strains. The cytosine embedded copper based metal–organic framework (Bio-MOF) was synthesized by facile one-step sonochemical method by simply mixing of 4–4, biphenyldicarboxylic, cytosine and copper nitrate (Bio-Cu-H2bpdc-Cy). The prepared bio-MOF was characterized by XRD, FTIR and FE-SEM techniques. The effect of Cu-H2bpdc-Cy on the expression of the rsbA gene was evaluated in the clinical and standard Proteus mirabilis and study of MIC of Cu-H2bpdc-Cy by microdilution against them that have the rsbA gene. According to different concentrations of MIC, MBC concentrations was cultured on blood agar culture medium. Regarding to the concentration of MIC, gene expression changes were obtained by real-time PCR. MIC for standard and clinical strains of Proteus mirabilis was 1.6 and 1.8 mg/ml, and also MBC was obtained to be 1.8 and 2.0 mg/ml, respectively. Finally, in the real time PCR method, expression of the rsbA gene in presences of bio-Cu-H2bpdc-Cy was reduced, but has no effect on the gene expression of the Housekeeping DNA Gyrase-B gene. Considering the effect of Cu-H2bpdc-Cy on the rsbA gene in Proteus mirabilis bacteria, it is possible to use of Cu-H2bpdc-Cy agent as a therapeutic supplement against this bacterium.