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. 2024 Feb 15;15:1323319. doi: 10.3389/fimmu.2024.1323319

Table 1.

Model parameterization.

Parameters Value Units Description
δx 20 µm Diameter of CA grid point
pD 0.005 1/d Normal tissue death rate
p 0.7 1/d Death probability in poor conditions
pn 5e-4 1/d Necrotic turnover rate
DO 1820 µm2/s Diffusion rate of oxygen
Dg 500 µm2/s Diffusion rate of glucose
DH 1080 µm2/s Diffusion of protons
OO 0.0556 mmol/L Oxygen concentration in blood
GO 5 mmol/L Glucose concentration in blood
pHO 7.4 pH pH of blood
VO 0.012 mmol/L/s Maximal oxygen consumption
kO 0.005 mmol/L Half-max oxygen concentration
kG 0.04 mmol/L Half-max glucose concentration
kH 2.5e-4 Proton buffering coefficient
Ad 0.35 ATP threshold for death
Aq 0.8 ATP threshold for quiescence
pH,min 6.1 pH Maximal acid resistance phenotype
pH,norm 6.65 pH Normal acid resistance phenotype
ΔH 0.003 pH Phenotype variation rate (acid res.)
pG,max 50 Maximal glycolytic phenotype
ΔG 0.15 Phenotype variation rate (glycolysis)
τmin 0.95 Days Minimum cell cycle time
σmin 80 µm Minimum vessel spacing
σmean 150 µm Mean vessel spacing
vmean [5, 100] Days Vessel stability
pang [0, 1] Angiogenesis rate
TM 1 Probability T-cell moves
τT 4 T-cell response delay
αT [1e-4,1e-1] T-cell recruitment rate
βT 10 Days Non-activated T-cell decay
pP,min 5 Maximal PD-L1 phenotype
pP,norm 2.7 Normal PD-L1 phenotype
ΔP [0,1] Phenotype variation rate (PD-L1)
de 0.042 Days T-cell engagement duration
He 6.6 half-max pH T-cell engagement time
σe 4 steepness of T-cell engagement time
Hp 6.6 half-max pH T-cell engagement probability
σp 6 steepness of T-cell engagement probability
Li 65.35 percent T-cell survival rate in high glucose
L0 21.78 percent T-cell survival rate in low glucose
Lg -16.67 percent T-cell glucose deprivation parameter
DA 100 µm2/s Anti-PD-L1 diffusion parameter
γA 0.5 1/s Anti-PD-L1 natural decay rate
γP 0.001 1/s Cellular bound PD-L1 decay rate