癌症是一种体细胞遗传异常的疾病,这种异常导致产生了生长调控失常的细胞克隆。近年来我们对一些基因在肿瘤发生中的作用已有了一些了解,发现癌基因和抑瘤基因实际上是人类正常基因组的一部分,并且在将生理信号由细胞外传递至核的过程中起着至关重要的作用,而由不同途径引起的此种机制的紊乱即可导致癌症。但目前我们对肿瘤发生的具体机制 Cancer is a disease of somatic cell genetic abnormality that results in the production of cell clones that are dysregulated in growth. In recent years we have gained some understanding of the roles of some genes in tumorigenesis and found that oncogenes and tumor suppressor genes are actually part of the normal human genome and play a role in transferring physiological signals from the extracellular to the nuclear. The vital role, and the disorder of this mechanism caused by different ways can lead to cancer. But now we have specific mechanisms for tumorigenesis