• 제목/요약/키워드: Acridine

검색결과 147건 처리시간 0.023초

주걱송편버섯(Pycnoporus cinnabarinus SCH-3)의 Laccase에 의한 Acridine 산화 (Oxidation of Acridine by Laccase of Pycnoporus cinnabarinus SCH-3)

  • 이현수;한만덕;윤경하
    • 미생물학회지
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    • 제44권2호
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    • pp.110-115
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    • 2008
  • Acridine은 fungal laccase의 기질이 아님에도 불구하고 acridine을 Pycnoporus cinnabarinus SCH-3 배양액에 첨가했을 때 acridone으로 산화되었다. P. cinnabarinus SCH-3균주는 배양 중에 다량의 laccase와 3-hydroxyanthranilic acid (3-HAA)와 cinnabarinic acid (CA)를 생성했다. 정제된 laccase와 acridine을 완충용액에서 직접 반응시켰을 때 acridine은 변화되지 않았다. 그러나 laccase의 기질인 2,2'-azino-bis-(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS)나 3-HAA를 laccase와 acridine 혼합액에 첨가했을 경우에는 acridine이 acridone으로 산화되었다. 특히 ABTS 첨가구는 3-HAA 첨가구보다 acridine 산화율이 2배 이상 높았다. 한편 정제된 laccase와 3-HAA를 완충액에서 반응시켰을 때 3-HAA는 CA로 전환되었다. 이와 같은 실험결과들은 P. cinnabarinus SCH-3의 laccase가 배양중에 생산된 3-HAA를 매개체로 사용하여 acridine을 acridone으로 산화하고 CA는 laccase에 의하여 3-HAA로부터 합성됨을 나타낸다.

Stabilization of Poly(dA)·[poly(dT)]₂Triple Helical DNA by Acridine Derivatives: Role of Side Chain in the Triplex Stabilization

  • 현경미;이길준;조태섭;Kim, Seog K.;이세윤
    • Bulletin of the Korean Chemical Society
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    • 제18권5호
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    • pp.528-534
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    • 1997
  • The conformation and stabilization effects of acridine derivatives 9-aminoacridine, an acridine with an aminoalkyl side chain, bis acridine (two acridines linked by an aminoalkyl side chain), and proflavin in the triplex helical poly(dA)·[poly(dT)]2 were investigated by optical spectroscopies. Based on the negative LD and weak positive CD in the acridine absorption wavelength region, we concluded that the acridine moiety of all derivatives are intercalated. We also examined the melting temperatures. Of all the compounds examined, the acridine with an amino alkyl side chain had the strongest effect on the stabilization of the third strand of a poly (dA)·[poly(dT)]2 triplex. The role of the side chain, based on this observation, is discussed.

Acridine Fluorescence Behaviors in Different Polymeric Microenvironments Directed by C2-Proton-Acidity of Imidazolium-Based Ionic Liquids

  • Ji, Myoung-Jin;Kim, Jong-Gyu;Shin, Ueon-Sang
    • Bulletin of the Korean Chemical Society
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    • 제33권8호
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    • pp.2489-2493
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    • 2012
  • A new fluorescent system (acridine/RTIL hybrid gel) confined in the 3D micro-structure of a poly(lactic acid) membrane were prepared from 1-butyl-3-methylimidazolium-based ionic liquids ([bmim]X (X = $SbF_6$, $NTf_2$, Cl); RTILs), poly(lactic acid) (PLA), and acridine via the sol-gel route. SEM images showed that, in the presence of [bmim]$SbF_6$ and [bmim]$NTf_2$, 3D-ly paticulated structures were created inside the PLA membranes and acridine/RTIL hybrid gels were confined in gabs of particulates. However, the use of [bmim]Cl induced the formation of a 3D-ly porous structure containing the hybrid gel of acridine/[bmimCl in the micropores. The three fluorescent systems exhibited different fluorescence behaviors (fluorescence maximum and intensity) depending on the C2-H acidity scale of the RTILs (or their anion type). Acridine gels hybridized with [bmim]$SbF_6$ and [bmim]$NTf_2$ showed blue fluorescence with relative high intensity, whereas the hybrid gel with [bmim]Cl exhibited almost no fluorescence under dry conditions. However, the acridine/[bmim]Cl hybrid system in the micro-porous PLA membrane started to emit fluorescent light under humid conditions and showed a possible response, indicating that it could be applied as a humidity sensor.

Synthesis and Antitubercular Activity of 6-Chloro (Unsubstituted)- 2-Methoxy-9-Substituted Acridine Derivatives

  • Aly, Enayat I.;Abadi, Ashraf H.
    • Archives of Pharmacal Research
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    • 제27권7호
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    • pp.713-719
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    • 2004
  • Several analogues of the general formulae 2-methoxy-9-substituted acridine and 6-chloro-2-methoxy-9-substituted acridine were synthesized and evaluated in vitro at 6.25 $\mu\textrm{g}$/mL against M. tuberculosis $H_{37}Rv$. Compounds 15 and 17 showed potential antitubercular activity with 100% inhibition to the virulent mycobacterium.

말라리아 진단을 위한 Acridine Orange 염색법과 Giemsa 염색법의 효율성 비교 (Comparison of acridine orange and giemsa stains for malaria diagnosis)

  • 공현희;정동일
    • Parasites, Hosts and Diseases
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    • 제33권4호
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    • pp.391-394
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    • 1995
  • 말라리아의 진단 방법으로 흔히 사용되고 있는 Giemsa 염색법과 형광염색법중 Acridine orange(AO) 염색법을 비교하였다. 말라리아 환자의 혈액을 채취하여 Giemsa와 AO로 염색하여 각각 광학현미경 및 형광현미경으로 관찰하였다. AO 염색법은 Giemsa 염색법에 비해 저배율에서도 쉽게 말라리아 원충을 찾을 수 있어 빠르고 정확한 말라리아의 진단을 위해 Acridineorange 염색법이 더 효과적이라고 생각된다.

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A New Acridine-Imidazolium-Based Cholestane Receptor for Anion Sensing

  • Jadhav, Jyoti Ramesh;Ahmad, Md. Wasi;Kim, Hong-Seok
    • Bulletin of the Korean Chemical Society
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    • 제32권spc8호
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    • pp.2933-2937
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    • 2011
  • A new highly selective receptor (3) based on an acridine-imidazolium functionalized cholestane for anion sensing was designed and synthesized. A binding study of 3 with various anions was assessed by UV-vis and fluorescence spectroscopies in dry CH3CN. Receptor 3 showed the highest selectivity toward hydrogen pyrophosphate (Ka = $1.5{\times}10^4M^{-1}$).

마우스 골수세포와 말초혈액을 이용한 Giemsa와 Acridine orange를 이용한 염색법 비교

  • 박지은;이성학;최재묵;김일환;김택로;노현정;김영훈
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2003년도 춘계학술대회 논문집
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    • pp.47-47
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    • 2003
  • Acridine orange를 이용한 염색법은 OECD guideline 474에 채택되어 널리 사용되고 있는 염색법으로 Giemsa를 이용하였을 때 보다 artifact를 구별하기 쉬우며 숙련되지 않는 관찰자도 쉽게 소핵을 구별할 수 있다는 장점을 가지고 있다. 본 시험에서는 신약의 초기 screening단계에서 유전독성여부를 알아보기 위한 방법으로 마우스 골수세포와 말초혈액을 이용하여 Geimsa와 Acridine orange염색법을 비교하였다. (중략)

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Acridine orange-β-cyclodextrin 내포 착물을 이용한 카페인의 분광형광법 정량 (Spectrofluorometric determination of caffeine using acridine orange-β-cyclodextrin inclusion complex)

  • 박종휘;최희선
    • 분석과학
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    • 제26권6호
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    • pp.353-356
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    • 2013
  • A method on the determination of caffeine in beverage with acridiene orange-${\beta}$-cyclodextrin (CD) inclusion complex was developed. The conditions such as pH of the sample solution and concentration of acridine orange and ${\beta}$-CD were optimized to 12.0(${\pm}0.5$), $1.9{\times}10^{-6}M$ and $1.25{\times}10^{-3}M$, respectively. Under these optimum conditions, the calibration curve of caffeine was obtained over concentration range of $5{\times}10^{-5}{\sim}1.1{\times}10^{-3}M$. The detection limit was $1.0{\times}10^{-5}M$. The relative errors(%) in beverage samples were less than 5.0%.