Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Research Trends for Nanotoxicity Using Soil Nematode Caenorhabditis elegans

토양선충 Caenorhabditis elegans를 이용한 나노독성 연구동향

  • Kim, Shin Woong (Department of Environmental Science, Konkuk University) ;
  • Lee, Woo-Mi (Department of Environmental Science, Konkuk University) ;
  • An, Youn-Joo (Department of Environmental Science, Konkuk University)
  • Received : 2012.04.24
  • Accepted : 2012.11.30
  • Published : 2012.12.30
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Abstract

Caenorhabditis elegans, a free-living nematode mainly found in the soil pore water, roles the critical function in trophic levels, energy flow, and decomposition in soil ecosystem. C. elegans is commonly used species to test soil toxicity. Recently, they are employed broadly as a test organism in nanotoxicology. In this study, a review of the toxicity of nanomaterials for C. elegans was presented based on SCI (E) papers. The nanotoxicity studies using C. elegans have been reported in 20 instances including the mechanism of toxicity. Most studies used K-medium, S-medium, and NGM (Nematode Growth Medium) plate as an exposure medium to test toxicity of nanoparticles. The effects observed include anti aging, phototoxicity, genotoxicity, and dermal effects on C. elegans exposed to nanoparticles. We found that the toxic mechanisms were related with various aspects such as lifespan abnormality, oxidative stress, distribution of particles on inter-organisms, and stress-related gene analysis. C. elegans has advantage to test toxicity of nanoparticles due to various cellular activities, full genome information, and easy observation of transparent body. C. elegans was considered to be a good test species to evaluate the nanotoxicity.

Free-living 선충으로 알려진 Caenorhabditis elegans는 주로 토양 공극수에서 서식하며, 토양 영양단계, 에너지 흐름, 그리고 분해자로서 중요한 역할을 하는 것으로 알려져 있다. 최근 들어, C. elegans는 나노독성연구에 널리 사용되고 있는 추세이다. 본 연구에서는 C. elegans를 이용한 나노독성과 그에 대한 기작에 관련된 선행연구를 조사하였으며, 총 20건의 연구를 확인하였다. 대부분의 연구는 K-medium, S-medium, 그리고 NGM (Nematode Growth Medium) plate를 노출매체로 이용하고 있으며, 나노물질에 노출된 C. elegans로부터 관찰된 영향으로는 노화억제, 광독성영향, 유전독성, 그리고 표피자극 등이 포함되었다. C. elegans를 이용한 독성기작 연구는 개체 생활사 영향 평가, 산화스트레스 영향 평가, 유전독성영향 평가, 나노물질의 생체 내 분포, 그리고 나노물질 특성에 의한 독성영향 평가로 분류할 수 있다. 본 연구에서는 다양한 세포활성, 잘 알려진 유전정보, 그리고 투명한 구조로 인한 나노물질 관찰의 용이성을 바탕으로, C. elegans를 이용한 나노독성연구의 장점을 확인하였다. C. elegans는 나노독성을 평가하기에 적합한 시험종으로 고려되고 있다.

Keywords

Acknowledgement

Supported by : National Research Foundation

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