端粒是真核细胞染色体末端的一种保护性结构 ,与端粒酶一起具有维持基因组稳定和决定细胞寿命的作用。研究表明端粒酶激活是多种细胞癌变的一个重要环节 ,且该环节可处在整个癌变过程的早期或晚期 ,其作用在于维持癌变细胞的永生性。 Telomeres are a protective structure at the end of the chromosome of eukaryotes and, together with telomerase, have the effect of maintaining genomic stability and determining cell lifespan. Studies have shown that telomerase activation is an important part of a variety of cell carcinogenesis, and the link can be in the early or late stages of the carcinogenesis, its role is to maintain immortality of cancerous cells.