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천다미,장다솜,김혜영,최갑성,최상기,Cheon, Da-Mi,Jang, Da Som,Kim, Hye Young,Choi, Kap Seong,Choi, Sang Ki 한국미생물학회 2013 미생물학회지 Vol.49 No.2
순천대학교 지의류 은행(Lichen Bioresources Center)에서 571종의 지의류 내생 곰팡이를 분양받아 Candida albicans에 대한 항진균 활성을 조사하여 4종을 선정하였다. 선정된 4종의 지의류 내생 곰팡이의 배양액 내에 존재하는 항진균 활성을 알아보기 위해 disc diffusion method 방법을 이용한 결과 Stereocaulon sp. (1429,1430)가 C. albicans에 대한 항진균 활성이 가장 좋았으며, 다음으로는 Graphis sp. (1245), Cryptosporiopsis diversispora (0156) 순으로 활성이 좋게 나타났으며, 이들 지의류 내생곰팡이가 고체배지와 액체배지에서도 항진균 활성 물질을 생성하였다. 고체배지에서와 액체배지에서 공통적으로 활성이 있는 지의류 내생 곰팡이 배양액의 chloroform, ethyl acetate 용매 추출물의 C. albicans의 항진균 활성도를 측정한 결과 4종 모두 chloroform 추출물에서 높은 활성도를 나타냈다. Candida albicans, Candida glabrata, Candida tropicalis, Candida lusitaniae에 대한 항진균 활성은 Stereocaulon sp. (1429, 1430)의 chloroform 추출물에서 모두 98% 이상의 높은 저해율을 보였고 Stereocaulon sp. (1429) 배양액의 chloroform 추출액과 ethyl acetate 추출액을 GC/MS를 이용해 성분을 분석한 결과 hexadecanonic acid-methyl ester, 14-octadecenoic acid-methyl ester, octadecenoic acid-methyl ester가 새로운 항진균 물질일 가능성을 보여주었다. To isolate a novel antifungal compound, we obtained 571 kinds of endolichenic fungi from Lichen Bioresources Center and examined their antifungal abilities. Four fungi Stereocaulon sp. (1429), Stereocaulon sp. (1430), Cryptosporiopsis sp. (0156), and Graphis sp. (1245) showed high antifungal activity against Candida albicans when they grew in both liquid and solid media. We extracted the culture supernatants of these fungi with chloroform and then ethyl acetate. The chloroform fraction exhibited the highest anti-fungal activities when those fractions were examined for the growth inhibition of Candida albicans with disc diffusion method. To see information for the inhibitor present in chloroform fraction we employed GC-MS for the fractions of Stereocaulon sp. (1429). We found that hexamethylcyclotrisiloxane, decanoic acid, hexadecanonic acid-methyl ester, 14-octadecenoic acid-methyl ester, and octadecenoic acid-methyl ester were present more in chloroform fraction than in ethylacetate fraction. This indicates that those compounds could be possible antifungal candidates since antifungal activity of chloroform extract was two times higher than that of ethyl acetate extract.
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Atorvastatin으로 유도된 근위축 세포모델에서 상황-오미자박 고상발효물 열수추출물의 보호효과
김영숙,황수진,박광일,임종민,천다미,정유진,전병엽,곽경태,오태우,Kim, Young-Suk,Hwang, Su-Jin,Park, Kwang-Il,Lim, Jong-Min,Cheon, Da-Mi,Jung, Yu Jin,Jeon, Byeong Yeob,Kwak, Kyeung Tae,Oh, Tae Woo 대한한의학방제학회 2021 大韓韓醫學方劑學會誌 Vol.29 No.4
Objectives : This study is to effect of improving muscle atrophy through water extract on the solid-phase fermentation extraction with Phellinus linteus of discarded Schisandra chinensis in an atorvastatin-induced atrophy C2C12 cell. Methods : C2C12 myoblast were differentiated into myotube by 2% horse serum medium for 6 days, and then treated solid-phase fermentation(S-P) extract at different concentrations for 24h. To investigate the effect of S-P extract on the induction of muscle atrophy and expression of atrophy-related genes and apoptosis in differentiated C2C12 myotubes using a GSH, ROS, real-time PCR, western blots analysis. Results : As a result of treatment with atorvastatin at concentrations of 5, 10, and 20 uM on the 6th day of differentiation in C2C12 myotube cells, it was confirmed that the cell morphology was damaged in a concentration-dependent manner, and the length and thickness of the myotube also decreased in a concentration-dependent manner. Treatment with S-P extract (50, 100 and 200 ㎍/㎖) increased of GSH and inhibited ROS in the atorvastatin-induced muscle atrophy cell model at a concentration that did not induce toxicity. In addition, it was confirmed that it has an effect on muscle reduction by inhibiting apoptosis of muscle cells as well as being involved in protein production and degradation of muscle cells. Conclusions : Atorvastatin-induced atrophy C2C12 cell, S-P extract activates related to differentiation/generation and proteolysis, and inhibits cell death of atrophy in C2C12 cell. Based on this, it is necessary to prove its effectiveness through animal models and human application test, but it is considered to be discarded Schisandra chinensis can present the potential for development as a recycling industrial material.
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Dexamethasone으로 유도한 근위축 세포모델에서 흑효모 배양물 유래 polycan의 근위축 개선에 대한 효과
황수진,임종민,구본화,천다미,정유진,김영숙,오태우 대한한의학방제학회 2021 大韓韓醫學方劑學會誌 Vol.29 No.1
Objectives : This study was conducted to evaluate the anti-atrophic effect of polycan in dexamethasone-induced skeletal muscle atrophy in vitro model. Methods : C2C12 myoblast were differentiated into myotube by 2% horese serum medium for 6 days, and then treated polycan extract at different concentrations for 24h. The effect of dexamethasone on the induction of muscle atrophy and expression of atrophy-related genes in differentiated C2C12 myotubes using a GSH, ROS, real-time PCR, western blots analysis. Results : The results showed that Treatment with polycan (100 and 200 ㎍/㎖) noncytotoxic levels on both myoblast and myotube. Polycan decreased the ROS level overproduced with dexamethasone and improved the depletion of GSH level. Dexamethasone showed a decrease in myotube diameter, which was associated with up-regulation muscle-specific ubiquitin ligases markers, such as atrogin-1, FoxO3, myostatin and muscle RING finger-1 (MuRF1), and down-regulation of myogenin, MEF2, Myogenic regulatory factor 5, 6 and MyoD. The results showed that polycan treatment significantly dose-dependently inhibited it. Furthermore, decreased expressions of PI3K/Akt signal pathway by dexamethasone were reversed by treatment with polycan. Conclusions : Thus, polycan suppresses dexamethasone induced muscle atrophy in C2C12 myotube in vitro model through activation of PI3K/Akt pathway and protective effect of improve skeletal muscle function.
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