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RISS 인기검색어
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- 저자 : Hassan Rahnama (검색결과 2 건)
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Immune analysis of cry1Ab-genetically modified potato by in-silico analysis and animal model
Hassan Rahnama,Mahdi Nikmard,Mohsen Abolhasani,Rahim Osfoori,Forough Sanjarian,Ali Akbar Habashi 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.5
The safety of feeding transgenic potato (Solanum tuberosum), resistant to the potato tuber moth, to Wistar rats was examined from an immunological perspective. The genetically modified potato (GMP) was harbouring cry1Ab and nptII genes as target and selectable marker genes, respectively. In-silico analysis reconfirmed that Cry1Ab and NPTII protein sequences have no significant homology to known toxins or known allergens. The Wistar rats were fed a diet containing 20% GMP or its parental control, non-GMP (NGMP), for 90 days. The consumption of GMP food did not affect the growth rate, food intake, food efficiency, and general health status of the rats. There were no significant differences in the serum concentrations of immunoglobulin A (IgA), IgG, IgM, interleukin 6 (IL-6), and IFN-c between GMP and NGMP-fed rats. Based on such data, it is concluded that the transgenic potato had no adverse effect on immunity functions of Wistar rats.
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Farzaneh Pourianezhad,Hassan Rahnama,Amir Mousavi,Mahmood Khosrowshahli,Sudabeh Mafakheri 한국식물생명공학회 2019 Plant biotechnology reports Vol.13 No.3
Feverfew (Tanacetum parthenium) is a medicinal herb that has multiple pharmacologic properties. This plant is rich parthenolide (PN). Hairy roots (HRs) culture is a valuable biotechnological tool for the production of plant secondary metabolites. Furthermore, application of elicitors is one of the most effective strategies to induce the metabolite biosynthesis. This study has investigated the effects of various elicitors on the production of PN in feverfew hairy root culture and the expression of parthenolide synthase (TpPTS) gene. Three elicitors were used separately and in combination, including yeast extract (YE) (2.5 mgL− 1), methyl jasmonate (MJ) (100 μM), Ag+ (100 μM), YE + MJ, Ag+ + MJ, YE + Ag+, and YE + MJ + Ag+ which were added to the 1/2MS medium on day 18 and after 48 h and 96 h, hairy roots were collected to determine the PN content. Total RNA was extracted from hairy roots and used for cDNA synthesis and real-time PCR analysis to investigate the gene expression of TpPTS. The PN content was determined by HPLC. The highest PN content (0.05 mg g− 1 dry weight) was achieved after application of elicitors (in 2.5 mgL− 1 YE and 100 μM MJ) and the highest expression of TpPTS gene also occurred after 96 h in the same treatment. It was concluded that some of the combined elicitors could efficiently increase the parthenolide content of feverfew in vitro culture. The additive effect of elicitors might be due to the separate mechanisms of each substance that is acting in an independent pathway.
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