尽管科学技术的发展日新月异,但人类对自身衰老机制的了解仍然知之甚少,甚至连衰老是何时何处在体内发生的都难以预知。众所周知,胚胎早期发育具有一定的程序性。然而,与这种程序性形成鲜明对比的是衰老过程的随机性和不可预测性。衰老机制甚至一度被认为是难以应用实验方法来研究的。最近,美、日专家开始探索应用分子生物学技术研究衰老问题,并取得了一系列可喜的成果。 Despite the rapid development of science and technology, human understanding of the mechanism of aging is still poorly understood. Even when and where aging occurs in the body is unpredictable. It is well known that early embryo development has some procedural aspects. However, in stark contrast to this procedural, the randomness and unpredictability of the aging process. The mechanism of aging was even considered to be difficult to apply experimental methods to study. Recently, experts from the United States and Japan started to explore the application of molecular biology techniques to research aging problems and made a series of promising achievements.