Abstract            Volume:5  Issue-6  Year-2017         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

Granulocyte-macrophage colony-stimulating factor (GM-CSF), a monomeric glycoprotein produced by macrophages, T cells, mast cells and NK cells naturally. Since, this cytokine is responsible for the survival, proliferation, differentiation and function of myeloid cells, it has been used in vast applications such as cancer and inflammatory diseases. There is huge requirement of this therapeutic drug, recombinant human GM-CSF (rhGM-CSF) has been developed in yeast cells and characterized by various biophysical properties by the present investigators using rDNA technology. The rhGM-CSF has been increased the yield by expressing with T7 promoter and downstream of pelB signal peptide (2.5 kDa) in yeast cells and it can be used as a therapeutic protein where it shows the similar biochemical properties with natural human rhGM-CSF protein (Chitra et al., 2017). Further, to characterize any toxicological symptoms that might be produced in animals and to find recommended dose levels of rhGM-CSF for using as a therapeutic drug, the present investigation has been focused. Acute, sub-acute and chronic toxicity tests are routinely carried out by various pharmaceutical companies in the development of new medicines. Initially, acute study was conducted by administering ten times of the therapeutic dose of rhGM-CSF to mice and observed for 15 days to find the pre-terminal morbidity, mortality and any toxic reactions. There are no significant toxicological symptoms or any other adverse reactions observed during the sub chronic study in all males and females, it indicating that rhGM-CSF is safe up to the 325 µg/ 20 g mice and 116.6 µg/kg rabbit dose level. Based on these results, the present investigation suggested rhGM-CSF is safe and further conducting the clinical studies might be helpful for using the rhGM-CSF as a therapeutic drug.

Download this article as