bioRxiv ScienceSearch

Biology subjects

Farber, S.

Publications and source records attributed to Farber, S..

2 recordsLinked to original sources

The anticancer activity and immune modulating properties of combinatorial ensemble complementary (antisense) microRNA (fRNA) in combination with the immunomodulator - glycoproteid lectin from B. subtilis B-7025

BackgroundMany adenocarcinomas have the ability to capture from an extracellular matrix the oligonucleotides and nanoparticles by pinocytosis, when the non-cancerous cells are not capable to capture the oligonucleotides and small liposomes. This provides selective accumulation of proposed protected oligonucleotides (fRNA) in cancer cells and also provides the absence toxicity in the fRNA.\n\nMaterials and methodsFor the immunotherapy we used immunotropic 70 kDa lectin B. subtilis B-7025. In vivo experiments were carried out in C57BL line mice in Lewis lung carcinoma. The cytotoxic activity, lymphocytes, macrophages was determined in vitro using the MTT assay.\n\nResults and discussionAnimal survival rate in groups receiving either the fRNA or Vaccine was 70 and 40%, respectively. Combined use fRNA and Vaccine has the advantage compared with the use these drugs in monotherapy, as the anticancer efficacy of the scheme is much higher, which is manifested in the primary tumor node and metastasis inhibition.

cancer biology

Influence Of Non-Metabolic Microbial Growth Promotors (AMP Activators) On The Sensitivity To Antimicrobials In The Actually Multiresistant Microbial Strains

IntroductionThe control over multi-resistant nosocomial strains of microorganisms has been becoming increasingly urgent in recent years. We suggest a new paradigm that eliminates killing or inhibiting the growth of bacteria. Excluding bacteria death supresses the selection of resistant strains of microorganisms. We have developed such non-metabolite growth promoters, which in very low doses stimulate the rapid growth of many bacteria strains. The mechanism of action of the enhancers is caused by the activation of the cAMP high doses accumulation process in the microbial cells. cAMP itself is a substrate for phosphorylation including DNA polymerases.\n\nMaterials and methodsThe susceptible culture collection resistance strains Pseudomonas aeruginosa MDR Kharkov IMI1, Acinetobacter baumanii MDR Kharkov-IMI1, and Clebsiella pneumonia MDR Kharkov-IMI1 were used. The following antimicrobial agents of known potency were evaluated: ciprofloxacin, polymyxin, amikacin. The same broth, but containing 0.001% enhancers (under patenting), has been used for further passaging for MDR strains. Characteristics of bacterial growth were determined in a medium compared at the control group - the broth without enhancers.\n\nResults and discussionEnhancers contribute to a significant increase in the antimicrobial sensitivity to polymyxin, ciprofloxacin and amikacin in multi-resistant strains of bacteria. Changes in the growth characteristics and antimicrobial sensitivity are observed only in the second passage that demonstrates the need for the further studies of the molecular mechanisms of the cAMP effect on the division and growth of microbial cells.

microbiology