Regulatory feedback on receptor and non‐receptor synthesis for robust signaling
Abstract
Elaborate regulatory feedback processes are thought to make biological development robust, that is, resistant to changes induced by genetic or environmental perturbations. How this might be done is still not completely understood. Previous numerical simulations on reaction‐diffusion models of Dpp gradients in Drosophila wing imaginal disc have showed that feedback (of the Hill function type) on (signaling) receptors and/or non‐(signaling) receptors are of limited effectiveness in promoting robustness. Spatial nonuniformity of the feedback processes has also been shown theoretically to lead to serious shape distortion and a principal cause for ineffectiveness. Through mathematical modeling and analysis, the present article shows that spatially uniform nonlocal feedback mechanisms typically modify gradient shape through a shape parameter (that does not change with location). This in turn enables us to uncover new multi‐feedback instrument for effective promotion of robust signaling gradients.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 24, 2020
- Source ID
- 10.1002/dvdy.160
Entities
People
- Aghavni Simonyan
- Arthur D. Lander
- Cynthia Sanchez‐tapia
- Frederic Wan
- Qing Nie
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- Rutgers University
- Simons Foundation
- University of California, Irvine
- University of California, Los Angeles