The Journal of the Korea Contents Association (한국콘텐츠학회논문지)

The Korea Contents Association (한국콘텐츠학회)
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Cell Death of Human Promyelocytic Leukemia Cell after Low Dose of Electron Beam Irradiation with TNF-α

저 농도의 전자선을 조사한 전골수구성 백혈병 세포 죽음에서의 TNF-α 작용 효과

  • 김동현 (부산가톨릭대학교 방사선학과) ;
  • 고성진 (부산가톨릭대학교 방사선학과)
  • Received : 2014.05.07
  • Accepted : 2014.05.28
  • Published : 2014.06.28
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Abstract

Acute promyelocytic leukemia (APL) is a cancer of the blood. Although electron beam (EB) irradiation is used with other anti-cancer agents, EB irradiation can be harmful to normal tissues around the cancer. In the present study, we evaluate the differential cytotoxic effect of EB irradiation with other molecules, including TNF-${\alpha}$, on DMSO-treated HL-60 cells and HL-60 cells. HL-60 cells are the human promyleocytic leukemia cell line and are differentiated by DMSO. DMSO-treated HL-60 cells are considered to be normal granulocytic cells. In these results, TNF-${\alpha}$ may be used as the potential agent for the treatment of blood cancer without side effects in low dose of EB irradiation therapy.

급성전골수구성 백혈병(Acute promyelocytic leukemia, APL)은 혈액암으로 치료가 쉽지 않을 뿐만 아니라 항암치료에 가장 효과가 좋다는 방사선 치료를 해도 오히려 정상세포에도 작용하여 부작용을 초래하게 된다. 본 연구에서는 전자선(EB)을 TNF-${\alpha}$와 같이 처리하였을 경우 정상세포와 암세포의 세포 죽음에 어떠한 영향을 미치는지 확인하였다. HL-60세포는 APL세포주로서 사용하였고 DMSO를 처리하여 분화시킨 HL-60세포는 정상과립구의 성질을 나타내어 정상대조군으로 이용하였다. 그 결과 TNF-${\alpha}$를 전자선을 처리한 HL-60세포에서만 세포독성효과를 나타내었고 이 과정에서 TNF-${\alpha}$는 caspase3를 활성화 시켜서 세포자멸사를 유도하여 세포가 죽음에 이르게 하였다. 결론적으로 TNF-${\alpha}$는 항암치료의 부작용을 없애기 위해 저농도의 전자선 치료 시 함께 사용하여 암 세포의 제거를 증가시켜 암의 치료효율을 높일 수 있는 유효물질로 사료된다.

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