발프로익산이 인체 테논낭 섬유아세포의 생존에 미치는 영향
Effects of Valproic Acid on the Survival of Human Tennon’s Capsule Fibroblasts
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목적: 발프로익산이 배양된 인체 테논낭 섬유아세포의 생존에 미치는 영향에 대해 알아보고자 하였다. 대상과 방법: 일차배양한 섬유아세포에 0, 0.25, 0.5, 1.0 mM 발프로익산과 0, 1.0, 2.5 μg/mL 미토마이신 C에 각각 또는 동시에 5일간 노출시킨 후 MTT (3-[4, 5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide) assay를 이용하여 세포의 생존을 측정하였고, annexin‐V/propidium iodide 이중염색 후 유세포 분석을 이용하여 세포고사의 정도를 측정하였다. 결과: 발프로익산은 농도에 비례하여 섬유아세포의 생존을 유의하게 저하시켰으며, 미토마이신 C를 추가한 경우 섬유아세포의 생존을 더욱 저하시켰다. 두 약제 모두 섬유아세포의 세포고사를 유발하였으나 발프로익산은 미토마이신 C에 비해 세포고사를 적게 유발하였다. 결론: 발프로익산은 섬유아세포의 생존을 저하시키며 세포고사를 유발한다. 또한 미토마이신 C를 병용한 경우 섬유아세포에 대한항증식효과가 더 나타날 것으로 생각된다.
Abstract
Purpose: To investigate the effects of valproic acid on the survival of cultured human Tenon’s capsule fibroblasts (HTFBs). Methods: Primary cultured HTFBs were exposed to 0, 0.25, 0.5, and 1.0 mM valproic acid with or without 0, 1.0, 2.5 μg/mL mitomycin C, and incubated for 5 days. Cell survival was assessed using an MTT (3-[4, 5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide) assay and the degree of apoptosis was assessed by flow cytometry using annexin‐V/propidium iodide double staining. Results: Valproic acid decreased the survival of HTFBs in a dose‐dependent manner, and survival was further decreased by adding mitomycin C to valproic acid. Both valproic acid and mitomycin C induced apoptosis of HTFBs. Valproic acid induced less apoptosis than mitomycin C. Conclusions: Valproic acid decreased the cellular survival of HTFBs and induced apoptosis. The antiproliferative effects of valproic acid were further enhanced by the addition of mitomycin C.
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