Integral feedback in synthetic biology: negative-equilibrium catastrophe
Integral feedback in synthetic biology: negative-equilibrium catastrophe
复制标题
合成生物学中的积分反馈:负平衡灾难
DOI:
10.1007/s10910-023-01495-3
复制
发表时间:
2023
影响因子:
1.7
通讯作者:
Plesa T
中科院分区:
文献类型:
--
作者:
Plesa T
A central goal of synthetic biology is the design of molecular controllers that can manipulate the dynamics of intracellular networks in a stable and accurate manner. To address the fact that detailed knowledge about intracellular networks is unavailable, integral-feedback controllers (IFCs) have been put forward for controlling molecular abundances. These controllers can maintain accuracy in spite of the uncertainties in the controlled networks. However, this desirable feature is achieved only if stability is also maintained. In this paper, we show that molecular IFCs can suffer from a hazardous instability callednegative-equilibrium catastrophe(NEC), whereby all nonnegative equilibria vanish under the action of the controllers, and some of the molecular abundances blow up. We show that unimolecular IFCs do not exist due to a NEC. We then derive a family of bimolecular IFCs that are safeguarded against NECs when uncertain unimolecular networks, with any number of molecular species, are controlled. However, when IFCs are applied on uncertain bimolecular (and hence most intracellular) networks, we show that preventing NECs generally becomes an intractable problem as the number of interacting molecular species increases. NECs therefore place a fundamental limit to design and control of molecular networks.
登录
查看更多内容
影响因子:
64.8
作者:
Aoki, Stephanie K.;Lillacci, Gabriele;Khammash, Mustafa
通讯作者:
Khammash, Mustafa
影响因子:
1.7
作者:
Plesa, Tomislav;Vejchodsky, Tomas;Erban, Radek
通讯作者:
Erban, Radek
DOI:
10.1073/pnas.97.9.4649
发表时间:
2000-04-25
影响因子:
11.1
作者:
Yi, TM;Huang, Y;Doyle, J
通讯作者:
Doyle, J
影响因子:
3.2
作者:
Sharma, Umender K.;Chatterji, Dipankar
通讯作者:
Chatterji, Dipankar
DOI:
10.48550/arxiv.1908.10779
发表时间:
2019
期刊:
--
影响因子:
--
作者:
Plesa T
通讯作者:
Plesa T