القای کالوس و ایجاد کشت سوسپانسیون سلولی مریم‌گلی سهندی (Salvia sahendica) برای تولید تری‌ترپنوئیدهای دارویی بتولینیک، اولئانولیک و اورسولیک اسید

نوع مقاله : علمی - پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه کشاورزی، پژوهشکده گیاهان و مواد اولیه دارویی، دانشگاه شهید بهشتی، تهران

2 دانشیار، گروه کشاورزی، پژوهشکده گیاهان و مواد اولیه دارویی، دانشگاه شهید بهشتی، تهران

چکیده

بتولینیک، اولئانولیک و اورسولیک اسید، تری‌ترپنوئیدهای باارزشی هستند که اثرات دارویی متعددی ازجمله ضدتومور، ضدمیکروب، ضدالتهاب و ضدویروس ایدز برای آن‌ها گزارش شده است. گیاه مریم‌گلی سهندی یک گیاه انحصاری و چندساله جنس مریم‌گلی است که در مناطق محدودی از شمال‌غرب ایران رویش دارد. در این تحقیق القای کالوس و ایجاد کشت سوسپانسیون سلولی این گیاه برای تولید این تری‌ترپنوئیدها مطالعه شده است. از ریزنمونه‌های برگِ دانهال‌های درون شیشه‌ای برای القای کالوس بر روی محیط‌کشت موراشیگ و اسکوگ (MS) به‌همراه غلظت‌های مختلف توفوردی (5/0، 1، 5/1 و 2 میلی‌گرم در لیتر) در ترکیب با بنزیل آدنین (5/0، 1 و 5/1 میلی‌گرم در لیتر) در قالب طرح آزمایشی فاکتوریل کامل تصادفی استفاده شد. بیش‌ترین درصد القای کالوس (100%) در محیط‌کشت حاوی 1 میلی‌گرم در لیتر توفوردی و 5/0 میلی‌گرم در لیتر بنزیل آدنین به‌دست آمد. مطالعه الگوی رشد سلولی نشان داد که بیش‌ترین میزان وزن تر (2/13 گرم) و خشک (2/2 گرم) در هفته چهارم به‌دست آمده و بعد از آن رشد سلول‌ها کاهش یافت. ارزیابی الگوی تولید تری ترپنوئیدها (میلی‌گرم در 100 گرم ماده خشک) نیز حاکی از بیش‌ترین میزان تولید اورسولیک اسید (81/173)، بتولینیک اسید (2/162) و اولئانولیک اسید (32/174) در هفته سوم بود. نتایج نشان داد که میزان تولید بتولینیک و اورسولیک اسید در هفته سوم کشت به‌ترتیب 4/10 و 5/1 برابر بیشتر از مقدار آن‌ها در گیاه وحشی است. این نتایج می‌تواند برای تولید انبوه این ترکیبات دارویی مهم در شرایط کنترل شده به‌ویژه بیوراکتور مورد توجه قرار گیرد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Callus Induction and Cell Suspension Culture Establishment of Salvia sahendica for The Production of Medicinal Triterpenoids Betulinic, Oleanolic and Ursolic Acid

نویسندگان [English]

  • Ahad Hedayati 1
  • Mohammad Hossein Mirjalili 2
  • Ziba Bakhtiar 1
1 MSc Student, Department of Agriculture, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran
2 Associate Professor, Department of Agriculture, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran
چکیده [English]

Betulinic, oleanolic and ursolic acid are highly valuable pentacyclic triterpenoids because of their wide spectrum of biological activities such as anti-inflammatory, hepatoprotective, antitumor, anti-HIV, antimicrobial, antifungal, anti-ulcer, gastroprotective, hypoglycemic, and antihyperlipidemic. Salvia sahendica Boiss. & Buhse is an aromatic, endemic perennial herb which grows in the restricted regions of Northwest of Iran. In the present study, callus induction and cell suspension culture establishment of the plant for the production of triterpenoids were studied. Callus induction was conducted from in vitro-grown leaf explant cultured on Murashige and Skoog (MS) medium supplemented with different concentrations of 2,4-D (0.5, 1.0, 1.5 and 2.0 mg l−1) and BA (0.5, 1.0 and 1.5 mg l−1) base on factorial complete random design experiment. Maximum callus induction (100%) was obtained in MS medium supplemented with 1 mg l−1 2,4-D and 0.5 mg l−1 BA. The study of cell growth curve showed that the highest fresh weight (13.2g) and dry weight (2.2g) obtained after 4 week of culture. High content of ursolic acid (173.81 mg/100g DW), betulinic acid (162.2 mg/100g DW) and oleanolic acid (174.32 81 mg/100g DW) were obtained at third week of culture. Results showed that the content of betulinic acid and ursolic acid at third week of culture was 10.4 and 1.5-fold than the aerial part of wild growing plant. These results can be considered for scaling-up of triterpenoids production in bioreactors

کلیدواژه‌ها [English]

  • Lamiaceae
  • Tissue culture
  • Cell culture
  • Secondry metabolite
  • Triterpenoids
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