6 research outputs found

    IBRCA2์— ์˜ํ•œ BubR1 ๋‹จ๋ฐฑ์งˆ acetylation ๊ทœ๋ช…๊ณผ ๊ธฐ๋Šฅ์— ๋Œ€ํ•œ ์—ฐ๊ตฌ

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ) --์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์ƒ๋ช…๊ณผํ•™๋ถ€,2007.Maste

    ํžˆ์Šคํ†ค ํƒˆ์•„์„ธํ‹ธํ™”ํšจ์†Œ ์–ต์ œ์ œ romidepsin์ด ๊ฐ„์•” ์„ธํฌ์ฃผ์—์„œ ์œ ๊ธฐ์Œ์ด์˜จ์ˆ˜์†ก์ฒด 2B1 (OATP2B1)์˜ ๋ฐœํ˜„๊ณผ ๊ธฐ๋Šฅ์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์•ฝํ•™๋Œ€ํ•™ ์•ฝํ•™๊ณผ,2020. 2. ์ด์šฐ์ธ.Romidepsin (RMD) is an epigenetic modulator that inhibits histone deacetylase and it is currently approved for the treatment of T-cell lymphoma (cutaneous or peripheral). Efficacy of RMD requires its metabolic conversion into an active form in hepatocytes, but little is known about the mechanism by which RMD enters and accumulates in hepatocytes. As one of uptake transporters in hepatocytes, organic anion transporter polypeptide 2B1 (OATP2B1) may interact with RMD, but such possibility was not carefully examined. Moreover, it remains unknown whether RMD can impact the expression and function of OATP2B1. In the current study, we investigated whether RMD can interact with OATP2B1 using a fluorescent probe substrate (dibromofluorescein, DBF) and HEK293 cells stably expressing OATP2B1. In addition, we examined whether RMD can alter the expression of OATP2B1 in established hepatic cancer cell line models. Our results indicated that RMD does not inhibit the transport activity of OATP2B1, suggesting that it is unlikely to be a substrate of OATP2B1. When three hepatic cancer cell lines were treated with RMD (1~10 nM; 24 hours), the level of OATP2B1 mRNA decreased in a concentration-dependent manner, followed by recovery upon drug removal. Similar results were obtained using with another histone deacetylase inhibitor (suberoylanilide hydroxamic acid, 0.1~5 ฮผM). Our immunoblotting results indicated that the treatment with RMD led to a decreased OATP2B1 protein levels. Taken together, RMD is not likely an OATP2B1 substrate, but may decrease OATP2B1 levels. Further investigations are warranted to examine the potential impact of RMD on the expression and activity of OATP2B1, thereby the hepatic accumulation of other drugs.Romidepsin์€ ํ”ผ๋ถ€T์„ธํฌ๋ฆผํ”„์ข…(CTCL)๊ณผ ๋ง์ดˆT์„ธํฌ๋ฆผํ”„์ข…(PTCL)์˜ ์น˜๋ฃŒ์— ์Šน์ธ๋œ ์•ฝ๋ฌผ๋กœ์„œ ํžˆ์Šคํ†ค ํƒˆ์•„์„ธํ‹ธํ™”ํšจ์†Œ๋ฅผ ์–ต์ œํ•˜๋Š” ํ›„์ƒ์œ ์ „ํ•™์  ๋ฉ”์ปค๋‹ˆ์ฆ˜์œผ๋กœ ์•ฝํšจ๋ฅผ ๋‚˜ํƒ€๋‚ธ๋‹ค. Romidepsin์€ ํ™œ์„ฑ ๋Œ€์‚ฌ์ฒด๋กœ ๊ฐ„์„ธํฌ์—์„œ ๋ณ€ํ™”ํ•˜๋Š” ๊ฒƒ์ด ์•ฝํšจ์— ํ•„์ˆ˜์ ์ด์ง€๋งŒ, ์•ฝ๋ฌผ์˜ ๊ฐ„์„ธํฌ ์ถ•์  ๋ฉ”์ปค๋‹ˆ์ฆ˜์€ ์•Œ๋ ค์ ธ ์žˆ์ง€ ์•Š๋‹ค. ๋‹ค์–‘ํ•œ ์™ธ์ธ์„ฑ ๋ฐ ๋‚ด์ธ์„ฑ ํ™”ํ•ฉ๋ฌผ์˜ ๊ฐ„์„ธํฌ๋‚ด ๊ฑฐ๋™์— ์˜ํ–ฅ์„ ์ค„ ์ˆ˜ ์žˆ๋‹ค๊ณ  ์•Œ๋ ค์ ธ ์žˆ๋Š” OATP2B1๋Š” ํ›„์ƒ์œ ์ „ํ•™์  ์กฐ์ ˆ๊ธฐ์ „์— ์˜ํ•˜์—ฌ ์œ ์ „์ž ์ „์‚ฌ๋Ÿ‰ ๋ณ€ํ™”๊ฐ€ ๋ณด๊ณ  ๋œ ๋ฐ” ์žˆ๋‹ค. ๊ธฐ์กด ๋ฌธํ—Œ์—์„œ๋Š” romidepsin์ด OATP2B1์˜ ๋ฐœํ˜„๊ณผ ๊ธฐ๋Šฅ์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์— ๋Œ€ํ•ด ์—ฐ๊ตฌ๋œ ๋ฐ”๊ฐ€ ์—†์—ˆ์œผ๋ฉฐ, ๋”ฐ๋ผ์„œ ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” romidepsin์ด OATP2B1์˜ ๊ธฐ์งˆ๋กœ์„œ ์ž‘์šฉํ•˜๋Š”์ง€ ์•Œ์•„๋ณด๊ณ  romidepsin์ด ํ›„์ƒ์œ ์ „ํ•™์  ์ธก๋ฉด์—์„œ OATP2B1์˜ ๋ฐœํ˜„์— ์˜ํ–ฅ์„ ์ฃผ๋Š”์ง€ ์•Œ์•„๋ณด๊ณ ์ž ํ•˜์˜€๋‹ค. Romidepsin์˜ ๊ธฐ์งˆ์„ฑ์„ ํ™•์ธํ•˜๊ธฐ ์œ„ํ•ด OATP2B1๋ฅผ ๋ฐœํ˜„ํ•˜๋Š” HEK293 stable cell line์„ ๊ตฌ์ถ•ํ•˜์˜€๋‹ค. OATP2B1์— ๋Œ€ํ•˜์—ฌ ์„ ํƒ์ ์ธ ํ˜•๊ด‘ ๊ธฐ์งˆ์ธ dibromofluorescein์„ ์‚ฌ์šฉํ•˜์—ฌ romidepsin์€ ๊ฒฝ์Ÿ์  ์ €ํ•ด๋ฅผ ์œ ๋ฐœํ•˜์ง€ ์•Š๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. OATP2B1์˜ ๋ฐœํ˜„ ์กฐ์ ˆ์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์„ ์—ฐ๊ตฌํ•˜๊ธฐ ์œ„ํ•˜์—ฌ 3๊ฐ€์ง€ ๊ฐ„์•” ์„ธํฌ์ฃผ์— 24์‹œ๊ฐ„ ๋™์•ˆ romidepsin(1~10 nM) ์ฒ˜๋ฆฌํ•˜์˜€์„ ๋•Œ OATP2B1์˜ mRNA๊ฐ€ ๋†๋„์˜์กด์ ์œผ๋กœ ๊ฐ์†Œํ•˜๋ฉฐ ์•ฝ๋ฌผ์˜ ์ œ๊ฑฐ ํ›„ 24์‹œ๊ฐ„ ์ด๋‚ด์— ๋ฐœํ˜„ ์ •๋„๊ฐ€ ํšŒ๋ณต๋˜๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. ํžˆ์Šคํ†ค ํƒˆ์•„์„ธํ‹ธํ™”ํšจ์†Œ ์–ต์ œ์ œ ๋ฌผ์งˆ์ธ SAHA(0.1~5 uM)์™€ Na butyrate(0.5~2 mM) ์ฒ˜๋ฆฌํ–ˆ์„ ๋•Œ๋„ ์œ ์‚ฌํ•œ ๊ฒฐ๊ณผ๋กœ OATP2B1์˜ mRNA๊ฐ€ ๊ฐ์†Œํ•˜์˜€๋‹ค. Romidepsin์˜ ๋†๋„๊ฐ€ ์ฆ๊ฐ€ํ• ์ˆ˜๋ก OATP2B1์˜ ๋‹จ๋ฐฑ์งˆ ์–‘ ๋˜ํ•œ ๊ฐ์†Œํ•˜๋Š” ๊ฒฝํ–ฅ์„ ๋ณด์˜€๋‹ค. ๋ณธ ์—ฐ๊ตฌ ๊ฒฐ๊ณผ๋Š” romidepsin์ด OATP2B1 ๊ธฐ์งˆ์ด ์•„๋‹ ๊ฐ€๋Šฅ์„ฑ์ด ๋†’์œผ๋ฉฐ romidepsin์— ์ง€์†์ ์œผ๋กœ ๊ฐ„์„ธํฌ๊ฐ€ ๋…ธ์ถœ๋  ๊ฒฝ์šฐ OATP2B1์˜ mRNA์™€ ๋‹จ๋ฐฑ์งˆ ๋ฐœํ˜„๋Ÿ‰์„ ๊ฐ์†Œ์‹œ์ผœ ๊ฐ„์„ธํฌ ์•ฝ๋ฌผ์ถ•์ ์— ์˜ํ–ฅ์„ ๋ฏธ์น  ๊ฐ€๋Šฅ์„ฑ์„ ์ œ์‹œํ•˜์˜€๋‹ค. ์ด๋Ÿฌํ•œ ๊ฐ€๋Šฅ์„ฑ์€ ์ถ”ํ›„ ๊ฐ„์•”์„ธํฌ์ฃผ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ๊ฒ€์ฆํ•  ์˜ˆ์ •์ด๋‹ค.1. Introduction ๏ผ‘ 2. Materials and methods ๏ผ” 2.1. Materials and Cell Lines ๏ผ” 2.2. Generation and culture of HEK293 cells stably expressing OATP2B1 ๏ผ• 2.3. Transient transfection of HEK293 cells expressing OATP2B1 ๏ผ• 2.4. In vitro treatment with epigenetic modulators ๏ผ– 2.5. RNA extraction and Quantitative RT-PCR analysis ๏ผ— 2.6. Cellular Uptake Study using HEK293 cells stably expressing OATP2B1. ๏ผ˜ 2.7. Immunoblotting Analysis ๏ผ™ 3. Results 11 3.1. RMD have no substantial effect on cellular uptake of DBF in HEK293 cells stably expressing OATP2B1 11 3.2. RMD led to downregulate OATP2B1 mRNA in hepatic cell lines 11 3.3. Identification of histone acetylation followed by HDACi treatment in Huh7 cell line ๏ผ‘๏ผ’ 3.4. Downregulated OATP2B1 mRNA due to RMD treatment recovered in 24 hours followed by the use of drug free media ๏ผ‘๏ผ’ 3.5. HDACis downregulate OATP2B1 protein in hepatic cell lines 13 3.6. Downregulated OATP2B1 protein due to RMD treatment continued to decrease followed by the use of drug free media ๏ผ‘๏ผ“ 4. Discussion 14 5. Future directions ๏ผ‘๏ผ˜ 6. References ๏ผ’๏ผ 7. ๊ตญ๋ฌธ์ดˆ๋ก 33Maste

    ๋ฐ˜๋ณต์š”์ธ์ด 2๊ฐœ์ธ ๋ฐ˜๋ณต์ธก์ •์ž๋ฃŒ๋ฅผ ๋ถ„์„ํ•˜๊ธฐ ์œ„ํ•œ ํ†ต๊ณ„๋ชจํ˜•์˜ ๊ณ ์ฐฐ

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :ํ†ต๊ณ„ํ•™๊ณผ ํ†ต๊ณ„ํ•™์ „๊ณต,2000.Maste

    Relation between music preference and music behavior of smartphone user

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    ํ•™์œ„๋…ผ๋ฌธ (์„์‚ฌ)-- ์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› : ๋””์ง€ํ„ธ์ •๋ณด์œตํ•ฉํ•™๊ณผ, 2011.2. ์ด๊ต๊ตฌ.Maste

    Apparatus and method for animal behavior experiment

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    ๋™๋ฌผ์˜ ํ–‰๋™์‹คํ—˜ ์žฅ์น˜๊ฐ€ ๊ฐœ์‹œ๋œ๋‹ค. ๋ณธ ๋ฐœ๋ช…์˜ ์ผ ์‹ค์‹œ์˜ˆ์— ๋”ฐ๋ฅธ ๋™๋ฌผ์˜ ํ–‰๋™์‹คํ—˜ ์žฅ์น˜๋Š” ์‹คํ—˜๋™๋ฌผ์ด ์›€์ง์ด๋Š” ์‹คํ—˜๊ณต๊ฐ„์ด ๋‚ด๋ถ€์— ํ˜•์„ฑ๋˜๊ณ , ์ด๋™ ๊ฐ€๋Šฅํ•œ ๋ฐ”๋‹ฅ๋ฉด์„ ๊ตฌ๋น„ํ•˜๋Š” ์‹คํ—˜ ์ฑ”๋ฒ„; ์ƒ๊ธฐ ์‹คํ—˜ ์ฑ”๋ฒ„์˜ ์ผ์ธก์— ํ˜•์„ฑ๋˜๊ณ , ์ƒ๊ธฐ ์‹คํ—˜๋™๋ฌผ์— ๋Œ€ํ•œ ์ž๊ทน์„ ์ธ๊ฐ€ํ•˜๋Š” ์ž๊ทน์›์„ ๋‚ด๋ถ€์— ๊ตฌ๋น„ํ•˜๋Š” ์ž๊ทน์› ์ฑ”๋ฒ„; ๋ฐ ์ƒ๊ธฐ ์ž๊ทน์›์˜ ์ž๊ทน์ด ์ƒ๊ธฐ ์‹คํ—˜๊ณต๊ฐ„์— ์ˆ˜์šฉ๋˜๋Š” ์‹คํ—˜๋™๋ฌผ์—๊ฒŒ ์ „๋‹ฌ๋˜๋„๋ก, ์ƒ๊ธฐ ์ž๊ทน์› ์ฑ”๋ฒ„์™€ ์ƒ๊ธฐ ์‹คํ—˜ ์ฑ”๋ฒ„๋ฅผ ์—ฐ๊ฒฐํ•˜๋Š” ์—ฐํ†ต๋ถ€;๋ฅผ ํฌํ•จํ•˜๊ณ , ์ƒ๊ธฐ ์‹คํ—˜ ์ฑ”๋ฒ„์˜ ์ƒ๊ธฐ ๋ฐ”๋‹ฅ๋ฉด์„ ์ƒ๊ธฐ ์ž๊ทน์› ์ฑ”๋ฒ„๋กœ๋ถ€ํ„ฐ ๋ฉ€์–ด์ง€๋Š” ๋ฐฉํ–ฅ ๋˜๋Š” ๊ทธ ์—ญ ๋ฐฉํ–ฅ์œผ๋กœ ์ด๋™์‹œ์ผœ ์ƒ๊ธฐ ์‹คํ—˜๊ณต๊ฐ„์˜ ๋ฐ”๋‹ฅ๋ฉด์— ๋†“์ธ์— ์‹คํ—˜๋™๋ฌผ์ด ์ƒ๊ธฐ ๋ฐ”๋‹ฅ๋ฉด์˜ ์ด๋™์— ๋ฐ˜์‘ํ•˜์—ฌ ์›€์ง์ผ ์ˆ˜ ์žˆ๋„๋ก ํ˜•์„ฑ๋  ์ˆ˜ ์žˆ๋‹ค
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