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MMAE ADC systemic exposure and radial tumor transport

Independent deterministic radial transport and cellular-disposition implementation using reported scalar parameter facts and explicit discretization/observation assumptions.

A multiscale quantitative systems pharmacology platform for early screening of MMAE-based antibody-drug conjugates ↗

European Journal of Pharmaceutical Sciences

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RC48 1.5mg/kg-equivalent fixed profile

Deterministic reported-parameter context;25 g mouse and 150 kDa ADC dose conversion assumed, nominal-volume tissue mean; no population or exact published prediction claim.

0–168 hour

Scenario details

RC48 1.5mg/kg-equivalent fixed profile

Deterministic reported-parameter context;25 g mouse and 150 kDa ADC dose conversion assumed, nominal-volume tissue mean; no population or exact published prediction claim.

Readouts

ADC plasma · nM
adc plasma nM
Payload plasma · nM
payload plasma nM
Tissue mean free payload · nM
tissue mean free payload nM

Study purpose

  • How do the model's key biological readouts change under rc48 1.5mg/kg-equivalent fixed profile?

Assumptions

  • Interpret patterns within this model and starting configuration; do not treat them as clinical predictions or treatment recommendations.

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Simulation time
h
h

Time between reported samples.

h
6 → 1

1 change · Variation 1

Biology

Fixed-profile systemic exposure supplies radial transport. Tissue means use an explicitly assumed normalization.

Fixed-profile systemic exposure supplies radial transport. Tissue means use an explicitly assumed normalization.

Model details

31 parameters · 147 states · 147 equations · 11 derived outputs

Classification & API access
Therapeutic
MMAE antibody-drug conjugate
Modality
Antibody–drug conjugate (ADC)
Target
Cell-surface receptor
Disease / scope
Generic solid-tumor transport system
ParameterDefaultUnitDescription
Antibody accessible fractionantibody_accessible_fraction0.24—Antibody accessible fraction represented as a dimensionless fraction in the released equations.
Antibody central volumeantibody_central_volume0.0034LAntibody central volume used to convert modeled amount to concentration in the relevant compartment.
Antibody clearanceantibody_clearance0.0000728L/hAntibody clearance governing removal of modeled material from the relevant compartment.
Antibody diffusivityantibody_diffusivity90000um²/hAntibody diffusivity coefficient used by the released system of model equations.
Antibody exchangeantibody_exchange0.000252L/hAntibody exchange coefficient used by the released system of model equations.
Antibody half saturationantibody_half_saturation1nMAntibody half saturation coefficient used by the released system of model equations.
Antibody max eliminationantibody_max_elimination0nM/hAntibody max elimination governing first-order loss from the modeled system.
Antibody peripheral volumeantibody_peripheral_volume0.0042LAntibody peripheral volume used to convert modeled amount to concentration in the relevant compartment.
Antibody permeabilityantibody_permeability14.040000000000001um/hAntibody permeability coefficient used by the released system of model equations.
Binding off ratebinding_off_rate0.11/hBinding off rate coefficient used by the released system of model equations.
Binding on ratebinding_on_rate0.0251/nM/hBinding on rate coefficient used by the released system of model equations.
Boundary cell reactionsboundary_cell_reactions1—Boundary cell reactions coefficient used by the released system of model equations.
Deconjugation ratedeconjugation_rate0.0061/hDeconjugation rate coefficient used by the released system of model equations.
Endosomal cleavage rateendosomal_cleavage_rate0.3531/hEndosomal cleavage rate coefficient used by the released system of model equations.
Internalization rateinternalization_rate0.131/hInternalization rate coefficient used by the released system of model equations.
Payload accessible fractionpayload_accessible_fraction0.44—Payload accessible fraction represented as a dimensionless fraction in the released equations.
Payload central volumepayload_central_volume0.00095LPayload central volume used to convert modeled amount to concentration in the relevant compartment.
Payload clearancepayload_clearance0.0336L/hPayload clearance governing removal of modeled material from the relevant compartment.
Payload diffusivitypayload_diffusivity1008000um²/hPayload diffusivity coefficient used by the released system of model equations.
Payload efflux ratepayload_efflux_rate0.1991/hPayload efflux rate coefficient used by the released system of model equations.
Payload exchangepayload_exchange0.03L/hPayload exchange coefficient used by the released system of model equations.
Payload half saturationpayload_half_saturation1nMPayload half saturation coefficient used by the released system of model equations.
Payload influx ratepayload_influx_rate8.331/hPayload influx rate coefficient used by the released system of model equations.
Payload max eliminationpayload_max_elimination0nM/hPayload max elimination governing first-order loss from the modeled system.
Payload per antibodypayload_per_antibody4—Payload per antibody coefficient used by the released system of model equations.
Payload peripheral volumepayload_peripheral_volume0.01372LPayload peripheral volume used to convert modeled amount to concentration in the relevant compartment.
Payload permeabilitypayload_permeability864.0000000000001um/hPayload permeability coefficient used by the released system of model equations.
Radial stepradial_step3.526315789473684umRadial step coefficient used by the released system of model equations.
Target densitytarget_density_nM1502.077211225302nMTarget density coefficient used by the released system of model equations.
Use saturable clearanceuse_saturable_clearance0—Use saturable clearance governing removal of modeled material from the relevant compartment.
Vessel radiusvessel_radius8umVessel radius coefficient used by the released system of model equations.

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