Gray Andrew, Yan Lisa, Kast W Martin
Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California, USA.
Mol Interv. 2010 Aug;10(4):197-203. doi: 10.1124/mi.10.4.2.
Tumor cells frequently express antigens that allow them to be specifically targeted and destroyed by the immune system. Many tumor immunotherapy clinical trials have been conducted, directed at several types of cancer using myriad antigens and multiple immunization strategies. Despite this, only one therapeutic cancer vaccine, sipuleucel-T, has been approved. A groundbreaking study by Jaini et al. recently demonstrated that prophylactic immunization against a breast cancer associated antigen can prevent tumor development, and is far more effective than therapeutic vaccination. This study highlights the urgent need to rethink the clinical testing of tumor immunotherapies; it is time to consider clinical trials of cancer vaccines in the prophylactic setting.
肿瘤细胞经常表达一些抗原,这些抗原能使它们被免疫系统特异性地靶向并摧毁。针对多种癌症类型,利用无数抗原和多种免疫策略,已经开展了许多肿瘤免疫疗法的临床试验。尽管如此,目前仅有一种治疗性癌症疫苗——西妥昔单抗已获批准。Jaini等人最近的一项开创性研究表明,针对一种乳腺癌相关抗原进行预防性免疫可以预防肿瘤的发生,而且比治疗性疫苗接种更为有效。这项研究凸显了迫切需要重新思考肿瘤免疫疗法的临床试验;现在是时候考虑在预防性环境中开展癌症疫苗的临床试验了。