마황 추출물의 항바이러스 활성 = Antiviral activity of methanol extract from Ephedra sinica Stapf

국문 초록 (Abstract)

Newcastle disease virus(NDV) 감염된 baby hamster kidney(BHK) 세포에서 syncytium(합포체) 형성은 세포막 표면으로의 수송된 바이러스 당단백질 hemagglutinin- neuramidase(HN)에 의해 일어난다. HAU 값은 추출물의 농도가 25 과 3.2 ug/mL 사이에서는 현저하게 감소하였으나, NDV 감염된 HAD(%)는 25 ug/mL 농도에서 광범위한 흡착능의 감소를 나타내 바이러스 당단백질의 세포내 생합성은 저해되지 않았다. 그러므로, 약용식물인 마황 메탄올 추출물이 바이러스 당단백질의 세포막으로의 수송과 함께 합포체 형성을 저해하여 항바이러스 작용을 하였다. 또한 마황 추출물의 저해활성을 조사한 결과 α-glucosidase에 대한 추출물의 IC50은 18 μg/mL이었으며, β-glucosidase, α-mannosidase, β-mannosidase에 대한 마황 추출물의 IC50은 각각 60, 40, 150 μg/mL로 나타나 β-type glycosidases 보다 α-type glycosidase에 대한 효소활성 저해능이 우수하였다. 따라서 IC50농도에서는 세포내에서 당단백질 생합성은 저해되지 않으며 당단백질의 수송을 저해하는 것으로 판단되었으며 향후 항바이러스 관련 작용기작의 연구가 필요하다고 판단된다.

참고문헌 (Reference)

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