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( Chang Zheng Cui ),( Chi Zeng ),( Xia Wan ),( Dong Chen ),( Jia Yao Zhang ),( Ping Shen ) 한국미생물 · 생명공학회 2008 Journal of microbiology and biotechnology Vol.18 No.1
Anthracene is a PAH that is not readily degraded, plus its degradation mechanism is still not clear. Thus, two strains of anthracene-degrading bacteria were isolated from longterm petroleum-polluted soil and identified as Sphingomonas sp. 12A and Pseudomonas sp. 12B by a 16S rRNA sequence analysis. To further enhance the anthracenedegrading ability of the two strains, the biosurfactants produced by Pseudomonas aeruginosa W₃ were used, which were characterized as rhamnolipids. It was found that these rhamnolipids dramatically increased the solubility of anthracene, and a reverse-phase HPLC assay showed that the anthracene degradation percentage after 18 days with Pseudomonas sp. 12B was significantly enhanced from 34% to 52%. Interestingly, their effect on the degradation by Sphingomonas sp. 12A was much less, from 35% to 39%. Further study revealed that Sphingomonas sp. 12A also degraded the rhamnolipids, which may have hampered the effect of the rhamnolipids on the anthracene degradation.
Chemical constituents from the aerial parts of Melandrium firmum
Chang Hao Zhang,Gao Li,Jie Luo,Tian Li,Yong Cui,Mei Jin,Da Lei Yao,Ming Shan Zheng,Zhen-Hua Lin,Jiong Mo Cui 대한약학회 2015 Archives of Pharmacal Research Vol.38 No.10
Two new anthraquinones, melrubiellin C (1) andmelrubiellin D (2), were isolated from the aerial parts of Melandriumfirmum Rohrbach, together with eight known compounds(3–10). The structures of these compounds wereelucidated using 1Dand 2DNMR(COSY,HMQC,HMBCandNOESY) experiments. All isolated compounds were tested fortheir cytotoxicity against NCI-H460, Hep G2, MKN-28 andA-549 cells.Of these 10 compounds,1 and 2 exhibitedmoderatecytotoxicity with IC50 values ranging from 9.54 to 32.41 lM.
( Yao Da Lei ),( Zhang Chang Hao ),( Li Ren ),( Luo Jie ),( Jin Mei ),( Piao Jin Hua ),( Zheng Ming Shan ),( Cui Jiong Mo ),( Son Jong Keun ),( Li Gao ) 영남대학교 약품개발연구소 2015 영남대학교 약품개발연구소 연구업적집 Vol.25 No.-
The present study was designed to isolate and characterize novel chemical constituents of the stem bark of Juglans mandshurica Maxim. (Juglandaceae).The chemical constituents were isolated and purified by various chromatographic techniques. The structures of the compounds were elucidated on the basis of spectral data (1D and 2D NMR, HR-ESI-MS, CD, UV, and IR) and by the comparisons of spectroscopic data with the reported values in the literatures. Two long chain polyunsaturated fatty acids (1 and 2) were obtained and identified as (S)-(8E, 10E)-12-hydroxy-7-oxo-8, 10-octadecadienoic acid (1) and (S)-(8E, 10E)-12-hydroxy-7-oxo-8,10-octadecadienoic acid methyl ester (2). To the best of our knowledge, this is the first report on the isolation and structural elucidation of the two new conjugated ketonic fatty acids from this genus.
( Da Lei Yao ),( Chang Hao Zhang ),( Jie Luo ),( Mei Jin ),( Ming Shan Zheng ),( Jiong Mo Cui ),( Jong Keun Son ),( Gao Li ) 영남대학교 약품개발연구소 2015 영남대학교 약품개발연구소 연구업적집 Vol.25 No.-
Two new (1 and 3) two known diarylhep-tanoids (2 and 4), along with two tetralones (5 and 6), one naphthoquinone (7), four phenylpropanoids (8-11), and phenol (12) were isolated from the leaves of Juglans mandshurica. Their structures were elucidated on the basis of spectral and chemical data. Compounds 2 and 10 are firstly isolated from this plant and 8 and 12 were isolated from the Juglans genus for the first time. Among these compounds, only 7 cxhibitcd moderate cytotoxicities against cultured Mgc-803, A549, K562, and Hela tumor cell lines with IC50 values of 25.90, 28.60, 39.06, 44.90 LLM, respectively.
5-Lipoxygenase inhibitors suppress RANKL-induced osteoclast formation via NFATcl expression
( Ju Hee Kang ),( Zheng Ting ),( Mi Ran Moon ),( Jung Seon Sim ),( Jung Min Lee ),( Kyung Eun Doh ),( Sunhye Hong ),( Minghua Cui ),( Sun Choi ),( Hyeun Wook Chang ),( Hea Young Park Choo ),( Mijung Y 영남대학교 약품개발연구소 2016 영남대학교 약품개발연구소 연구업적집 Vol.26 No.-
5-Lipoxygenase synthesizes leukotrienes from arachidonic acid. We developed three novel 5-LO inhibi-tors having a benzoxazole scaffold as a potential anti-osteoclastogenics. They significantly suppressed RANKL-induced osteoclast formation in mouse bone marrow-derived macrophages. Furthermore, one compound. K7, inhibited the bone resorptive activity of osteoclasts. The anti-osteoclastogenic effect of K7 was mainly attributable to reduction in the expression of NFATc1. an essential transcription factor for osteoclast differentiation. K7 inhibited osteoclast formation via ERK and p38 MAPK. as well as NF-KB signaling pathways. K7 reduced lipopolysaccharide (LPS)-induced osteoclast formation in vivo. corroborating the in vitro data. Thus, IG exerted an inhibitory effect on osteoclast formation in vitro and in vivo, properties that make it a potential candidate for the treatment of bone diseases associated with excessive bone resorption.
Chemical constituents from the leaves of Juglans mandshurica
Da Lei Yao,Chang Hao Zhang,Jie Luo,Mei Jin,Ming Shan Zheng,Jiong Mo Cui,손종근,Gao Li 대한약학회 2015 Archives of Pharmacal Research Vol.38 No.4
Two new (1 and 3) and two known diarylheptanoids(2 and 4), along with two tetralones (5 and 6), onenaphthoquinone (7), four phenylpropanoids (8–11), andone phenol (12) were isolated from the leaves of Juglansmandshurica. Their structures were elucidated on the basisof spectral and chemical data. Compounds 2 and 10 arefirstly isolated from this plant and 8 and 12 were isolatedfrom the Juglans genus for the first time. Among thesecompounds, only 7 exhibited moderate cytotoxicitiesagainst cultured MGC-803, A549, K562, and HeLa tumorcell lines with IC50 values of 25.90, 28.60, 39.06,44.90 lM, respectively.
백선의 형태적 특성, 항균 효과 및 분자 세포학적 분석
정대수,조창우,김경미,허지은,김수영,정영수,김도훈,방재욱,최정,이재헌,Chung, Dae-Soo,Cho, Chang-Woo,Kim, Kyung-Mee,Heo, Jee-Eun,Kim, Soo-Young,Chung, Young-Soo,Kim, Doh-Hoon,Bang, Jae-Wook,Cui, Zheng,Lee, Jai-Heon 한국생명과학회 2006 생명과학회지 Vol.16 No.7
The importance of wild plant resources along with the development of high biotecyhnology is highlighted for exploitation of new materials which can make the added value. The goal of this study is providing fundamental data bases for developing new materials through the analyses of morphological characteristics, antibiotics and molecular cytogenetics in Baegseon (Dictamnus dasycarpus Turcz.). Baegseon has several characteristics; there are two types of flower color, pink and white, the seed germination starts about February 20th, the maximum flowering season is around May 17th in southern Korea, the growth period is about 60 days. The number of chromosomes are 2n=2x=36, the size of chromosomes in metaphase is $4.2{\sim}8.1{\mu}m$. The amount of 2C nuclear DNA is 1.93pg, and there is no variation of genome size amoung varieties. The extraction juice of baegseon young roots has the excellent antibiotic activity against the mold (Botrytis cinerea).