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Review of Cancer-Testis (CT) Genes

Cancer-testis (CT) 유전자의 고찰

  • Kim, Mi-Hee (Department of Biochemistry, School of Medicine, Pusan national University) ;
  • Song, Myung-Ha (Department of Biochemistry, School of Medicine, Pusan national University) ;
  • Lee, Sang-Yull (Department of Biochemistry, School of Medicine, Pusan national University)
  • 김미희 (부산대학교 의학전문대학원 생화학교실) ;
  • 송명하 (부산대학교 의학전문대학원 생화학교실) ;
  • 이상률 (부산대학교 의학전문대학원 생화학교실)
  • Received : 2011.05.19
  • Accepted : 2011.06.20
  • Published : 2011.06.30

Abstract

Cancer-testis (CT) antigens are immunogenic protein antigens with restricted expression in the testes and a wide range of human tumor types, eliciting both humoral and cellular immune responses in cancer patients. They are considered to be ideal targets for vaccine-based immunotherapy, and more than 100 CT antigens, including MAGE, NY-ESO-1, GAGE, BAGE, LAGE, SSX2 and NY-SAR-35 have been identified to date. The CT antigens were identified through various techniques and can be divided in those that are encoded on the X chromosome, the CT-X genes, and those that are not, the non-X-CT genes. CT genes are aberrantly activated and expressed in a proportion of various types of human cancers. The biological role of CT-X in both germ line tissues and tumors remains poorly understood. Cancer vaccine trials based on several CT antigens are currently ongoing. This paper reviews recent advances in and future trends of CT antigens for cancer immunotherapy.

Cancer-testis (CT) antigen은 다양한 종양과 정상 고환에서 제한적으로 발현되고, 암환자에서 체액성 면역과 세포성 면역반응을 일으키는 종양항원이다. 지금까지 MAGE, NY-ESO-1, GAGE, BAGE, LAGE, SSX2, NY-SAR-35를 포함하여 100개 이상의 CT antigen들이 동정되었고, 이러한 CT antigen들은 백신을 이용한 면역치료에 있어서 중요한 요소로 작용할 것으로 사료된다. CT antigen은 여러 가지 방법들을 통해 확인할 수 있고, X 염색체에 암호화 되어있는 CT-X gene과 X 염색체에 암호화 되어있지 않은 non-X CT gene으로 나눌 수 있다. 또한 몇몇의 종양에서 비정상적으로 활성화되지 않거나 발현되지 않는 CT antigen도 존재한다. 생식세포 조직과 종양에서 CT-X gene의 생물학적 역할이 아직 명확하게 규명되지 않았지만, 현재 여러 종류의 CT antigen을 이용한 암백신 치료법이 시도되고 있다. 본 논문은 암의 면역치료를 위한 CT antigen의 최근 연구동향과 앞으로의 연구방향에 대해 서술하고자 한다.

Keywords

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