Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
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Angiogenic Effect of Cardiac Ankyrin Repeat Protein Overexpression in Vascular Endo-thelial Cell

Cardiac Ankyrin Repeat Protein의 과량발현이 혈관내피세포에서 갖는 혈관신생 촉진 효과

  • Kong, Hoon-Young (Department of Molecular Biology, BK21 Graduate Program for RNA Biology, Institute of Nanosensor and Biotechnology, Dankook University) ;
  • Byun, Jong-Hoe (Department of Molecular Biology, BK21 Graduate Program for RNA Biology, Institute of Nanosensor and Biotechnology, Dankook University)
  • 공훈영 (단국대학교 자연과학대학 분자생물학과.BK21 RNA 전문인력 양성사업팀.나노센서 바이오텍연구소) ;
  • 변종회 (단국대학교 자연과학대학 분자생물학과.BK21 RNA 전문인력 양성사업팀.나노센서 바이오텍연구소)
  • Published : 2008.12.31
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Abstract

Tissue ischemia resulting from the constriction or obstruction of blood vessels leads to an illness that may affect many organs including the heart, brain, and legs. In recent years, considerable progress has been made in the field of therapeutic angiogenesis and the new approaches are expected to cure those "no-option patients" who are unsuited to conventional therapies. Although single angiogenic growth factor may be successful in inducing angiogenesis, combination of multiple growth factors is increasingly sought these days to augment the therapeutic responses. This trend is proper in light of the fact that blood vessel formation is a complex and multi-step process that requires the actions of many different factors. To meet the growing need for functionally significant blood flow recovery in the ischemic tissues, a novel strategy that can provide concerted actions of multiple factors is required. One way to achieve such a goal is to use a transcription factor that can orchestrate the expression of multiple target genes in the ischemic region and thus induce significant level of angiogenesis. Here, a putative transcription factor, cardiac ankyrin repeat protein (CARP), was evaluated in adenoviral vector context for angiogenic activity in human umbilical vein endothelial cells. The results indicated significant increase in proliferation, capillary-like structure formation, and induction of vascular endothelial growth factor, a typical angiogenic gene. Taken together, these results suggest that CARP represents itself as a novel target for therapeutic angiogenesis and warrants further investigation.

혈관이 좁아지거나 막혀서 생기는 허혈은 심장, 뇌, 다리와 같은 인체의 여러 장기에 영향을 미친다. 최근 혈관신생 분야에서 많은 진전이 있어 기존 치료법으로 치료가 되지 않는 허혈성 환자들의 치료 가능성에 대한 기대가 많아졌다. 혈관형성은 여러 개의 인자들과 세포들이 관여하는 복잡한 과정이기 때문에, 한 개의 인자보다는 여러 인자들을 병합하는 요법이 점점 많이 시도되고 있는데, 이런 병합요법의 한 예로 전사인자를 전달하는 전략을 생각할 수 있다. 이에 본 연구에서는 cardiac ankyrin repeat protein (CARP)의 유전자를 대상으로 그 혈관신생 능력을 혈관내피세포에서 조사하였다. 아데노바이러스 벡터 내에 human CARP의 cDNA를 클로닝하여 재조합 아데노바이러스를 제조하였으며, 이를 이용한 유전자 전달실험 결과, CARP 유전자 전달 군에서 유의하게 혈관내피세포의 중식과 모세관 구조 형성, 그리고 vascular endothelial growth factor의 발현 등을 증가시킴을 확인하였다. 본 연구 결과는 CARP가 혈관신생 연구의 새로운 목표 유전자로서 그 기능에 대한 많은 연구가 필요함을 뒷받침해준다.

Keywords

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