中国物理B ›› 2019, Vol. 28 ›› Issue (4): 40503-040503.doi: 10.1088/1674-1056/28/4/040503

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Intrinsic fluctuation and susceptibility in somatic cell reprogramming process

Jian Shen(沈健), Xiaomin Zhang(张小敏), Qiliang Li(李齐亮), Xinyu Wang(王歆宇), Yunjie Zhao(赵蕴杰), Ya Jia(贾亚)   

  1. 1 Department of Physics, Central China Normal University, Wuhan 430079, China;
    2 School of Information Engineering, Wuhan Technology and Business University, Wuhan 430065, China
  • 收稿日期:2018-11-20 修回日期:2019-01-05 出版日期:2019-04-05 发布日期:2019-04-05
  • 通讯作者: Ya Jia E-mail:jiay@mail.ccnu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11775091 and 11474117).

Intrinsic fluctuation and susceptibility in somatic cell reprogramming process

Jian Shen(沈健)1, Xiaomin Zhang(张小敏)1,2, Qiliang Li(李齐亮)1, Xinyu Wang(王歆宇)1, Yunjie Zhao(赵蕴杰)1, Ya Jia(贾亚)1   

  1. 1 Department of Physics, Central China Normal University, Wuhan 430079, China;
    2 School of Information Engineering, Wuhan Technology and Business University, Wuhan 430065, China
  • Received:2018-11-20 Revised:2019-01-05 Online:2019-04-05 Published:2019-04-05
  • Contact: Ya Jia E-mail:jiay@mail.ccnu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11775091 and 11474117).

摘要:

Based on the coherent feedforward transcription regulation loops in somatic cell reprogramming process, a stochastic kinetic model is proposed to study the intrinsic fluctuations in the somatic cell reprogramming. The Fano factor formulas of key genes expression level in the coherent feedforward transcription regulation loops are derived by using of Langevin theory. It is found that the internal fluctuations of gene expression levels mainly depend on itself activation ratio and degradation ratio. When the self-activation ratio (or self-degradation ratio) is increased, the Fano factor increases reaches a maximum and then decreases. The susceptibility is used to measure the sensitivity of steady-state response to the variation in systemic parameters. It is found that with the increase of the self-activation ratio (or self-degradation ratio), the susceptibility of steady-state increases at first, it reaches a maximum, and it then decreases. The magnitude of the maximum is increased with the increase of activated ratio by the upstream transcription factor.

关键词: intrinsic fluctuation, susceptibility, coherent feedforward loops, somatic cell reprogramming

Abstract:

Based on the coherent feedforward transcription regulation loops in somatic cell reprogramming process, a stochastic kinetic model is proposed to study the intrinsic fluctuations in the somatic cell reprogramming. The Fano factor formulas of key genes expression level in the coherent feedforward transcription regulation loops are derived by using of Langevin theory. It is found that the internal fluctuations of gene expression levels mainly depend on itself activation ratio and degradation ratio. When the self-activation ratio (or self-degradation ratio) is increased, the Fano factor increases reaches a maximum and then decreases. The susceptibility is used to measure the sensitivity of steady-state response to the variation in systemic parameters. It is found that with the increase of the self-activation ratio (or self-degradation ratio), the susceptibility of steady-state increases at first, it reaches a maximum, and it then decreases. The magnitude of the maximum is increased with the increase of activated ratio by the upstream transcription factor.

Key words: intrinsic fluctuation, susceptibility, coherent feedforward loops, somatic cell reprogramming

中图分类号:  (Nonlinear dynamics and chaos)

  • 05.45.-a
87.17.Aa (Modeling, computer simulation of cell processes) 87.18.Vf (Systems biology)