在DNA逻辑电路和神经网络中进行热可充电计算
Tianqi Song1, Lulu Qian2,3,4
1Bioengineering, California Institute of Technology, Pasadena, CA, USA.
Nature
|October 1, 2025
概括
热量可以为无酶的DNA电路提供动力, 这种通用能源使分子机器能够持续运行,模仿生物能量系统以实现先进的自主行为.
科学领域:
- 分子工程
- 生物物理
- 化学系统
背景情况:
- 生物系统利用新陈代谢获取能量,而人造分子机器则缺乏ATP或电力等通用动力来源.
- DNA已被用作纳米设备和反应的燃料,但需要特定的序列,限制其通用性.
- 目前的人工分子系统难以持续运行, 需要适应性的能源解决方案.
研究的目的:
- 研究热量作为无酶DNA电路的通用能量来源.
- 证明热能将分子系统从平衡状态驱动到不平衡状态.
- 在人工化学系统中实现持续计算和先进的行为.
主要方法:
- 使用温度坡道 (加热和冷却) 来诱导核酸中的二次结构.
- 在DNA中使用动态捕获状态来提供计算的能量.
- 设计和实施复杂的逻辑电路和超过200个分子物种的神经网络.
主要成果:
- 热能成功地将没有酶的DNA回路从平衡状态恢复到不平衡状态.
- 复杂的逻辑电路和神经网络对温度的上升作出反应,
- 电路在几分钟内充电,允许至少16轮的连续输入计算.
- 经过证明的持续运行和一致的性能,没有有问题的废物积累.
结论:
- 热能是无酶DNA循环的通用,类似ATP的能源.
- 这一策略使人工化学系统中持续的,代的计算和自主行为成为可能.
- 这种方法具有可扩展性,为先进的分子机器功能开辟了新的途径.
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