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Table 1 Parameter set used in the simulations

From: Individual fates of mesenchymal stem cells in vitro

Parameter

Value

Intracellular regulation

 

Randomization Rate R

2.5 × 104 s-1

Stem Cell State Fluctuation Strength σ0

0.15

Hill Coefficient n

5

Dissociation Constant k

0.3

Differentiation Threshold αs (αd = 1-αs)

0.85

Spatio-temporal organisation

 

Minimal Cell Radius R0

5 μm

Minimal Cell Volume V0

V(R0)

Proliferation Rate r = 1/Ï„

1.9/day

Young Modulus E

450 Pa

Contact Inhibition Threshold Fmax

1 × 10-9 N

Poisson's Ratio ν

0.4

Friction Coefficients γij, γis

3 × 107 Ns/m3 , 1 × 1011 Ns/m3 *

Cellular Diffusion Coefficient DCell

4 × 10-12 cm2/s

Cell-Cell Anchorage ε

6 × 10-5 N/m

Cell-Plane Anchorage ε

6 × 10-5 N/m

Quiescence Threshold Fq

10 N/m2

  1. The parameter set was adjusted using experimental data on the clone size distribution of ovine MSC growing in vitro [14]. *The high substrate friction coefficient γis was used in 'population regeneration' simulations (Sec. 3.2) in order to study the influence of biophysical properties on stem cell plasticity.