Feedback regulation in multistage cell lineages

Wing-Cheong Lo; Ching-Shan Chou; Kimberly K. Gokoffski; Frederic Y.-M. Wan; Arthur D. Lander; Anne L. Calof; Qing Nie; Wing-Cheong Lo; Ching-Shan Chou; Kimberly K. Gokoffski; Frederic Y.-M. Wan; Arthur D. Lander; Anne L. Calof; Qing Nie

doi:10.3934/mbe.2009.6.59

Mathematical Biosciences and Engineering

2009, Volume 6, Issue 1: 59-82. doi: 10.3934/mbe.2009.6.59

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Feedback regulation in multistage cell lineages

1.
Departments of Mathematics, University of California, Irvine, CA
2.
Center for Mathematical and Computational Biology, Department of Mathematics, University of California, Irvine, CA 92697-3875
3.
Developmental and Cell Biology, University of California, Irvine, CA

Received: 01 August 2008 Accepted: 29 June 2018 Published: 01 December 2008
MSC : 92C15,92C37,34D23

Studies of developing and self-renewing tissues have shown that differentiated cell types are typically specified through the actions of multistage cell lineages. Such lineages commonly include a stem cell and multiple progenitor (transit amplifying; TA) cell stages, which ultimately give rise to terminally differentiated (TD) cells. In several cases, self-renewal and differentiation of stem and progenitor cells within such lineages have been shown to be under feedback regulation. Together, the existence of multiple cell stages within a lineage and complex feedback regulation are thought to confer upon a tissue the ability to autoregulate development and regeneration, in terms of both cell number (total tissue volume) and cell identity (the proportions of different cell types, especially TD cells, within the tissue). In this paper, we model neurogenesis in the olfactory epithelium (OE) of the mouse, a system in which the lineage stages and mediators of feedback regulation that govern the generation of terminally differentiated olfactory receptor neurons (ORNs) have been the subject of much experimental work. Here we report on the existence and uniqueness of steady states in this system, as well as local and global stability of these steady states. In particular, we identify parameter conditions for the stability of the system when negative feedback loops are represented either as Hill functions, or in more general terms. Our results suggest that two factors -- autoregulation of the proliferation of transit amplifying (TA) progenitor cells, and a low death rate of TD cells -- enhance the stability of this system.
- cell lineage,
- olfactory epithelium,
- neurogenesis,
- terminally differentiated cell,
- feedback,
- transit amplifying cell,
- modeling,
- stability,
- neuronal progenitor,
- stem cell
Citation: Wing-Cheong Lo, Ching-Shan Chou, Kimberly K. Gokoffski, Frederic Y.-M. Wan, Arthur D. Lander, Anne L. Calof, Qing Nie. Feedback regulation in multistage cell lineages[J]. Mathematical Biosciences and Engineering, 2009, 6(1): 59-82. doi: 10.3934/mbe.2009.6.59

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Abstract

Studies of developing and self-renewing tissues have shown that differentiated cell types are typically specified through the actions of multistage cell lineages. Such lineages commonly include a stem cell and multiple progenitor (transit amplifying; TA) cell stages, which ultimately give rise to terminally differentiated (TD) cells. In several cases, self-renewal and differentiation of stem and progenitor cells within such lineages have been shown to be under feedback regulation. Together, the existence of multiple cell stages within a lineage and complex feedback regulation are thought to confer upon a tissue the ability to autoregulate development and regeneration, in terms of both cell number (total tissue volume) and cell identity (the proportions of different cell types, especially TD cells, within the tissue). In this paper, we model neurogenesis in the olfactory epithelium (OE) of the mouse, a system in which the lineage stages and mediators of feedback regulation that govern the generation of terminally differentiated olfactory receptor neurons (ORNs) have been the subject of much experimental work. Here we report on the existence and uniqueness of steady states in this system, as well as local and global stability of these steady states. In particular, we identify parameter conditions for the stability of the system when negative feedback loops are represented either as Hill functions, or in more general terms. Our results suggest that two factors -- autoregulation of the proliferation of transit amplifying (TA) progenitor cells, and a low death rate of TD cells -- enhance the stability of this system.
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