Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Radioprotective Effects of Propolis on the Mouse Testis Exposed to X-ray.

프로폴리스가 X-선에 노출된 마우스 정소에 미치는 방사선 방어 효과

  • Ji, Tae-Jung (Dept. of Radiological Science, Kaya University) ;
  • Kim, Jong-Sik (Dept. of Biological Science, Andong National University) ;
  • Jeong, Hyung-Jin (School of Bioresource Science, Andong National University) ;
  • Seo, Eul-Won (Dept. of Biological Science, Andong National University)
  • 지태정 (가야대학교 방사선학과) ;
  • 김종식 (안동대학교 자연과학대학 생명과학과) ;
  • 정형진 (안동대학교 생명자원과학부 생약자원) ;
  • 서을원 (안동대학교 자연과학대학 생명과학과)
  • Published : 2007.05.25
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Abstract

The propolis is natural product produced by honeybees and is known to have many biologically useful properties such as anti-microbial, anti-oxidative and anti-tumorigenic activity. However, its radio-protective property has not been well studied. To investigate radio-protective effect of propolis on mouse testis, mice were supplemented with propolis after 5 Gy irradiation. The histological changes of testis were detected by TEM. The results indicate that propolis may protect tissue deformation which is induced by 5 Gy of ionizing radiation. Furthermore, to elucidate the potential molecular mechanisms involved in radio-protective property of propolis, we performed microarray experiments using oligo DNA microarray. We found 65 up-regulated genes and 224 down-regulated genes, whose expression levels were affected more than 2-fold by propolis treatment in mice irradiated at 5 Gy. We confirmed microarray data with reverse transcription-PCR using gene specific primers. The results of RT-PCR are highly correlated with those of microarray. These results may help understanding molecular mechanisms of radioprotective effects by propolis in mouse model.

프로폴리스는 꿀벌에 의해 생산되는 천연물질로서, 항미생물, 항산화, 항암 활성이 있는 것으로 알려져 있다. 그러나 프로폴리스에 의한 방사선 방어효과에 대한 특성은 잘 연구되지 않았다. 마우스 정소조직을 대상으로 프로폴리스에 의한 방사선 방어효과를 연구하기 위하여, 프로폴리스를 섭식시키거나 복강 투여한 후 각각 방사선을 조사한 후, 마우스의 정소조직을 광학현미경과 전자현미경을 통해 관찰하였다. 그 결과 방사선에 의해 유도된 세포의 변형이 프로폴리스에 의해 회복됨을 알 수 있었다. 또한 이러한 방사선 회복 효과의 분자기전을 이해하고자 DNA microarray 실험을 수행하였다. 그 결과 방사선만 조사한 마우스에 비해 방사선과 프로폴리스를 동시에 처리한 마우스의 정소에서 2배 이상 증가되는 유전자 65개를 선별하였고, 반대로 2배 이상 감소되는 유전자 진4개를 선별하였다. 이중에서 각각의 유전자군에서 2개의 유전자를 선별하여 RT-PCR을 수행하여 마이크로어레이 결과를 검증하였다. 이러한 결과들은 마우스 모델에서 프로폴리스에 의한 방사선 방어효과의 분자기전을 이해하는데 도움이 될 것으로 기대된다.

Keywords

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