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Gui-Nan Shen,최정호,Kondaji Gajulapati,이지현,김영국,Mun Chal Rho,Sang-Hun Jung,Kyeong Lee,한성식,송규용,최용석 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.5
A series of 2-alkyl or 2-arylthio-5,8-dimethoxy-1,4-naphthoquinones (2-Thio-DMNQ, 5a-s) and 2-alkylamino-5,8-dimethoxy-1,4-naphthoquinones (2-Amino-DMNQ, 6a-k) was synthesized and evaluated for their ACAT inhibitory activities. Among them, the 2-dodecylthio-DMNQ 5l and 2-isobutylamidoundodecylthio-DMNQ 5r showed the most potent ACAT inhibitory activities with IC50 value of 22.8 and 24.4 μM, respectively. In a structure-activity relationship study, 2-thio-DMNQs with side chains of carbon number 11 ~ 15 exhibited significant ACAT inhibitory activities.
Shen, Gui-Nan,Choi, Jung-Ho,Gajulapati, Kondaji,Lee, Jee-Hyun,Kim, Young-Kook,Rho, Mun-Chal,Jung, Sang-Hun,Lee, Kyeong,Han, Sung-Sik,Song, Gyu-Yong,Choi, Yong-Seok Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.5
A series of 2-alkyl or 2-arylthio-5,8-dimethoxy-1,4-naphthoquinones (2-Thio-DMNQ, 5a-s) and 2-alkylamino-5,8- dimethoxy-1,4-naphthoquinones (2-Amino-DMNQ, 6a-k) was synthesized and evaluated for their ACAT inhibitory activities. Among them, the 2-dodecylthio-DMNQ 5l and 2-isobutylamidoundodecylthio-DMNQ 5r showed the most potent ACAT inhibitory activities with $IC_{50}$ value of 22.8 and 24.4 ${\mu}M$, respectively. In a structure-activity relationship study, 2-thio-DMNQs with side chains of carbon number 11 $\sim$ 15 exhibited significant ACAT inhibitory activities.
Han Ying-Hao,Mao Ying-Ying,Yu Nan-Nan,Jin Mei-Hua,Jin Ying-Hua,Wang Ai-Guo,Zhang Yong-Qing,Shen Gui-Nan,Cui Yu-Dong,Yu Li-Yun,Lee Dong-Seok,Jo Yu-Jin,Sun Hu-Nan,Kwon Jeongwoo,권태호 한국응용생명화학회 2020 Applied Biological Chemistry (Appl Biol Chem) Vol.63 No.3
In this study, we used RNA sequencing (RNA-seq) to analyze and compare bulk cell samples from wild-type (WT) dermal mesenchymal stem cells (DMSCs) (n = 3) and Prx II knockout DMSCs (n = 3). The purpose of the study was to elucidate the role of Prx II on allogeneic immune rejection of transplanted DMSCs. The results revealed differential expression of 472 genes (176 up-regulated and 296 down-regulated; p ≤ 0.05) between the PrxII+/+ (WT) and PrxII−/− sample groups. When highly regulated genes were categorized according to the Gene Ontology (GO) molecular function classification and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, the PrxII−/− samples showed a robust downward trend in allograft rejection. The study identified 43 all immunologically rejected differentially expressed genes, of which 41 showed lower expression in the PrxII−/− vs. PrxII+/+ (WT) samples. These findings suggest that Prx II gene knockout may down-regulate the allograft rejection that occurs during DMSCs transplantation and improve the survival rate of DMSCs in the host. This study provides a new perspective on the clinical treatment of stem cell transplantation.
Han Ying-Hao,Chen Dong-Qin,Jin Mei-Hua,Jin Ying-Hua,Li Jing,Shen Gui-Nan,Li Wei-Long,Gong Yi-Xi,Mao Ying-Ying,Xie Dan-Ping,Lee Dong-Seok,Yu Li-Yun,Kim Sun-Uk,김지수,권태호,Cui Yu-Dong,Sun Hu-Nan 한국응용생명화학회 2020 Applied Biological Chemistry (Appl Biol Chem) Vol.63 No.3
Severe inflammatory reactions caused by macrophage activation can trigger a systemic immune response. In the present study, we observed the anti-inflammatory properties of hispidin on LPS induced RAW264.7 macrophage cells. Our results showed that hispidin treatment significantly reduced the production of cellular NO, IL-6 and reactive oxygen species (ROS) while has not inhibitory effect on TNF-α productions. Excitingly, hispidin treatment retains the phagocytosis ability of macrophages which enabling them to perform the function of removing foreign invaders. Signaling studies showed, hispidin treatment dramatic suppressed the LPS induced mitogen activated protein kinases (MAPK) and JAK/STAT activations. In conclusion, our findings suggest that hispidin may be a new therapeutic target for clinical treatment of macrophages-mediated inflammatory responses.
이지현,이재호,김현관,김의검,신귀남,조수현,명창선,김동희,윤미영,최용석,김성훈,송규용,Lee, Jee-Hyun,Lee, Jae-Ho,Kim, Hyun-Kwan,Kim, Eui-Geom,Shen, Gui-nan,Cho, Soo-Hyun,Myung, Chang-Seon,Kim, Dong-Hee,Yun, Mi-Young,Choi, Yong-Seok,Kim, Su 대한약학회 2006 약학회지 Vol.50 No.5
A novel series of 4-senecioyloxymethyl-6,7-dimethoxycoumarin, isolated from Crinum latifolium, was prepared by reacting 4-bromomethyl or 4-bromomethyl-6,7- dimethoxycoumarin with various carboxylic acids and examined for their anti-angiogenic activities in human umbilical vein endothelial cells (HUVECs). Among them, 4e, 4f, 4g and 4i with noncyclic moiety exhibited potent anti-angiogenic activity. However, compounds with cyclic moiety such as phenyl, pyridinyl, thiophenyl and furanyl group did not exhibit any anti-angiogenic activity. Also, compounds 4f and 4g which exhibited strong anti-angiogenic activity in a dose-dependent manner showed antitumor activity.