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안광희,권소정,김대운,이호정 대한산부인과학회 2019 Obstetrics & Gynecology Science Vol.62 No.3
ObjectiveThis study aimed to analyze the expression pattern of glycogen synthase kinase 3β (GSK3β) and its phosphorylatedforms, GSK3β phosphorylated at Ser9 (pS9GSK3β), and GSK3β phosphorylated at Tyr216 (pY216GSK3β), in cervicalsquamous cell carcinoma (SCC) and adenocarcinoma (AC). MethodsWe performed immunohistochemical staining for GSK3β, pS9GSK3β, and pY216GSK3β in 64 SCC and 20 AC cases andcompared their expression patterns between the 2 tumor types. ResultsIncreased GSK3β and pS9GSK3β expression but decreased pY216GSK3β expression compared with that in the normalcervix were observed in both SCC and AC specimens. Specifically, the levels of GSK3β and pS9GSK3β were significantlyincreased in SCC and AC, respectively. GSK3β was localized in the nucleus and/or cytoplasm of SCC and AC cells. However, pS9GSK3β was predominantly localized in the membrane of AC cells, whereas it was present in the nucleusand/or cytoplasm of SCC cells. ConclusionThe results suggest that the phosphorylation status of GSK3β changes during cervical cancer development and thedifferent expression levels and patterns of GSK3β and pS9GSK3β are associated with the specific histologic phenotypeof cervical cancer.
신영균,이영준,박찬원,신형재,안광희 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-
A high speed and stable A/D conversion data process is required to weigh a mass on moving conveyer weighing platter. The paper presents a new method to obtain stable and fast automatic weighing A/D conversion data process. Dynamic weighting system which is constructed with dual load cell is realized by the stable A/D conversion data preocess algorithm using DSP. The proposed memthod is applied to the real design, and that experimental results showed good performances of the weighing stability.
상추 (Lactuca sativa L.) callus로부터 ACAT 억제 활성물질, phytol의 생산
안광희,장태오,백남인,김세영,An, Kwang-Hee,Jang, Tae-O,Baek, Nam-In,Kim, Se-Young 한국식물생명공학회 2002 식물생명공학회지 Vol.29 No.1
상추의 기내 callus 배양으로부터 ACAT (Acyl-CoA: Cholesterol acyltransferase) 억제 활성물질로 알려진 phytol 의 생산가능성이 연구되었다. Callus는 0.5mg.L$^{-1}$ NAA가 첨가된 MS 배지에 4주간 치상된 자엽 절편체로부터 유도되었으며, 다양한 수준의 chlorophyll을 함유하고 있었다. Phytol이 chlorophyll분자를 구성하는 물질로 알려져 있음에 도 불구하고, phytol의 추출량은 녹색의 자엽에서 보다 callus 에서 높게 나타났다. GC 분석결과, phytol의 추출량은 callus의 chlorophyll 함량과 비례하지 않는 것으로 나타났으며, callus의 chlorophyll 함량수준은 callus의 형성능과 관련이 있는 것으로 사료되었다. 본 연구의 결과는 phytol의 기내생산에 있어서 상추의 callus 배양의 잠재성을 제시한다 하겠다. The possibility for mass production of phytol, inhibitory diterpene against ACAT (Acyl-CoA: Cholesterol acyltransferase) was investigated by using callus culture of lettuce. The callus were induced from lettuce cotyledon explants on MS medium containing 0.5 mg.L$^{-1}$ NAA after 4 week's culture. Adventitious roots were formed from the explants on MS medium containing 0.5 mg.L$^{-1}$ IBA or 1.0 mg.L$^{-1}$ NAA. Adventitious shoots and roots were emerged from the callus when the callus was transferred to MS medium containing auxin alone, or with cytokinin. The plant growth regulators and their concentrations for the organogenesis were 1.0 mg.L$^{-1}$ NAA, 0.1 mg.L$^{-1}$ BA, 0.5 mg.L$^{-1}$ NAA with 0.1 mg.L$^{-1}$ kinetin, or 0.5 g.L$^{-1}$ 2.4-D with 1.0 mg.L$^{-1}$ kinetin. Analyses of chlorophyll contents showed that chlorophyll contents were higher in morphogenic calli than in non-morphogenic calli. However, the chemical analyses of gas chromatography indicated that phytol contents were not proportionate to the chlorophyll contents of callus. The content of phytol was higher in callus than in lettuce cotyledon.ledon.