تاثیرزهر زنبور عسل بر بیان ژن VEGF Aبر سلولهای سرطان پرومیلوسیتی (HL-60)
محورهای موضوعی : زیست شناسی سلولی تکوینی گیاهی و جانوری ، تکوین و تمایز ، زیست شناسی میکروارگانیسم
کلید واژه: سرطان, زهر زنبور عسل, آنژیوژنز, VEGF-A, رده سلولی HL-60,
چکیده مقاله :
مطالعات مختلف بر اثرات ضد سرطانی زهر زنبور عسل تأکید دارد. آنژیوژنزیاتشکیلرگهایخونیجدیدکه برایتکوینجنینوبسیاری ازوقایعفیزیولوژیکیموردنیازاستدربسیاری ازشرایطپاتولوژیکنظیررشدتومورها نیز ضروری است. یکی از ژنهای فعال در روند رگزایی VEGF-A میباشد. در این پژوهش تاثیر زهر زنبور عسل بر بیان این ژن بررسی گردید. سلولهای HL-60 در محیط کشت RPMI1640غنی شده با 10% FBS کشت داده شد. پس از 24 ساعت، سلولها توسط زهر زنبور در غلظتهای 2، 4، 8و10 میکروگرم بر میلیلیتر تیمار گردیدند. 48 ساعت پس از تیمار، RNA تام استخراج و cDNA با استفاده از توالی ژن مورد نظر سنتز شد و محصولات سنتزشده توسط Real Time PCR جهت بررسی سطح بیان ژن VEGF-Aمورد ارزیابی قرار گرفت.نتایج بررسی آماری دادهها نشان داد که کاهش معنادار (05/0(P< در میزان بیان ژنVEGF-A تیمارشده با غلظتهای 2، 4، 8 و10میکروگرم بر میلیلیتر زهر زنبور عسل نسبت به سلولهای گروه کنترل دیده میشود بهنحویکه بیشترین تغییرات کاهشی بیان ژن مربوط به غلظتµg/ml10 زهر زنبور بود.نتایج بیانگر کاهش بیان ژن VEGF-A، بیومارکر ویژه آنژیوژنز در نمونههای تحت تیمار با زهر زنبور عسل در مقایسه با گروه کنترل است.
Research indicates that bee venom has potent anti-inflammatory, anti-tumor and anticancer. Angiogenesis or new blood vessel formation, which is required for embryonic development and many physiological events, plays a crucial role in many pathological conditions such as tumor growth. One of the main genes which is involved in the process of angiogenesis is VEGF-A. In this in vitro study, the effects of Bee venom extract on VEGF-A expression were examined. In this experimental study, HL-60 cells were grown in RPMI 1640 medium supplemented with 10% Fetal Bovine Serum (FBS) and incubated at 37˚C with 5% CO2. After 24 h of cell culture, they were treated by the Bee venom at concentrations of 2, 4, 8 and 10 µg/ml. 48 hours after treatment, total RNA was extracted and cDNA was synthesized using the sequence of target gene. Finally, the synthesized products were analysed by Real Time PCR to determine the expression level of VEGF-A. The results of data analysis showed the inhibitory effect of Bee venom in concentrations of 2, 4, 8 and 10 µg/ml on VEGF-A expression in HL-60 cells in comparison with control group, indicating the highest reduction of gen expression for the highest concentration of Bee venom (10 µg/ml). Results indicated a decrease in the expression of VEGF-A, specific biomarker of angiogenesis, in the treated samples compared to the control group.
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