
При напиÑание литературного обзора иÑпользовалиÑÑŒ базы данных: Кибер-Ленинка, ÐБС ÐйбукÑ.ру, elib.spbstu.ru, eLIBRARY.RU, PudMed. СтатиÑтичеÑкую обработку ÑкÑпериментальных данных оÑущеÑтвлÑли Ñ Ð¸Ñ-пользованием пакета программ: Microsoft Excel. Тема выпуÑкной квалификационной работы: Культивирование штамма-продуцента E. coli Ñ Ñ†ÐµÐ»ÑŒÑŽ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ñ ÑÐ¾Ð´ÐµÑ€Ð¶Ð°Ð½Ð¸Ñ Ð±Ð°ÐºÑ‚ÐµÑ€Ð¸Ð°Ð»ÑŒÐ½Ñ‹Ñ… ÑндотокÑинов. Цель работы: разработать проблему в работе Ñ E. coli – образование Ñндо-токÑинов и методы ÑƒÐ¼ÐµÐ½ÑŒÑˆÐµÐ½Ð¸Ñ Ð¸Ñ… концентрации. Задачи иÑÑледованиÑ: - провеÑти обзор литературы; - подобрать методики Ð´Ð»Ñ Ð²Ñ‹Ð¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ Ð¸ÑÑледований; - изучить ÑпоÑобы Ð¾Ð¿Ñ€ÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ ÑндотокÑинов; - найти методы ÑƒÐ¼ÐµÐ½ÑŒÑˆÐµÐ½Ð¸Ñ ÑÐ¾Ð´ÐµÑ€Ð¶Ð°Ð½Ð¸Ñ ÑндотокÑинов на Ñтадии ÐºÑƒÐ»ÑŒÑ‚Ð¸Ð²Ð¸Ñ€Ð¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ»ÐµÑ‚Ð¾Ðº E. coli. Объектом иÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑвлÑетÑÑ ÑˆÑ‚Ð°Ð¼Ð¼ подгруппы E. coli BL21 (DE3). Предметом иÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑвлÑÑŽÑ‚ÑÑ Ð±Ð°ÐºÑ‚ÐµÑ€Ð¸Ð°Ð»ÑŒÐ½Ñ‹Ðµ ÑндотокÑины, образующиеÑÑ Ð² ходе жизненного цикла клеток E. coli. Работа была выполнена в Лаборатории рекомбинантных биотехнологий в СПбÐИИВС. Выводы иÑÑледований: 1) ИÑпользование минеральных Ñред Ð´Ð»Ñ ÐºÑƒÐ»ÑŒÑ‚Ð¸Ð²Ð¸Ñ€Ð¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ»ÐµÑ‚Ð¾Ðº E. coli позволÑет уменьшить количеÑтво образующихÑÑ Ð±Ð°ÐºÑ‚ÐµÑ€Ð¸Ð°Ð»ÑŒÐ½Ñ‹Ñ… ÑндотокÑинов поÑле культивированиÑ. 2) Изменение Ñолевого ÑоÑтава Ñред не влиÑет на количеÑтво образующихÑÑ Ð±Ð°ÐºÑ‚ÐµÑ€Ð¸Ð°Ð»ÑŒÐ½Ñ‹Ñ… ÑндотокÑинов. 3) Уменьшение температуры привело к Ñнижению концентрации получен-ной биомаÑÑÑ‹ и увеличило Ñодержание бактериальных ÑндотокÑинов в пробах. 4) Оптимального вариант Ð¿Ñ€Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ ÐºÑƒÐ»ÑŒÑ‚Ð¸Ð²Ð¸Ñ€Ð¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ»ÐµÑ‚Ð¾Ðº E. coli рекомендую иÑпользование Ñреды М9 при температуре 37 °С.
When writing the literature review, the following databases were used: Cyber-Leninka, EBS Aibuks.ru, elib.spbstu.ru, eLIBRARY.RU, PudMed. Statistical processing of experimental data was carried out using the software package: Microsoft Excel. Topic of the final qualification work: Cultivation of the producer strain E. coli in order to reduce the content of bacterial endotoxins. The purpose of the work: to develop a problem in working with E. coli – the formation of endotoxins and methods for reducing their concentration. Research objectives: - conduct a literature review; - choose methods for performing research; - learn how to determine endotoxins; - to find methods for reducing the content of endotoxins at the stage of cultiva-tion of E. coli cells. The object of the study is a strain of the subgroup E. coli BL21 (DE3). The subject of the study is bacterial endotoxins formed during the life cycle of E. coli cells. The work was carried out at the Laboratory of Recombinant Biotechnologies at the St. Petersburg Research Institute of Vitality. Research findings: 1) The use of mineral media for culturing E. coli cells can reduce the amount of bacterial endotoxins formed after culturing. 2) Changing the salt composition of the media does not affect the amount of bac-terial endotoxins formed. 3) Decrease in temperature led to a decrease in the concentration of the obtained biomass and increased the content of bacterial endotoxins in the samples. 4) The optimal option for culturing E. coli cells, I recommend using the M9 me-dium at a temperature of 37 °C.
lal-ÑеÑÑ, кÑлÑÑивиÑование, concentration, бакÑеÑиалÑнÑе ÑндоÑокÑинÑ, lal-test, biosynthesis, конÑенÑÑаÑиÑ, bacterial endotoxins, e. coli, culturing
lal-ÑеÑÑ, кÑлÑÑивиÑование, concentration, бакÑеÑиалÑнÑе ÑндоÑокÑинÑ, lal-test, biosynthesis, конÑенÑÑаÑиÑ, bacterial endotoxins, e. coli, culturing
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