190 likes | 314 Vues
Computer-Aided Design of LIVing systEms. CADLIVE automatically converts a biochemical network map to a dynamic model. JAVA application Client-Server System. Dynamic simulation by CADLIVE. Very abstract model (Boolean model). INTERMEDIATE LEVEL in CADLIVE. Very concrete model
E N D
Computer-Aided Design of LIVing systEms CADLIVE automatically converts a biochemical network map to a dynamic model. JAVA application Client-Server System
Dynamic simulation by CADLIVE Very abstract model (Boolean model) INTERMEDIATE LEVEL in CADLIVE Very concrete model (Experimentally measured kinetics model)
Forward Engineering Mathematical model construction based on a biochemical network map Direct link of a network map to a math model Reverse Engineering Parameter values are tuned to reproduce biological behaviors
CADLIVE (Computer-Aided Design of LIVing systEms) A comprehensive software suite for directly connecting biochemical network maps to dynamic simulations CADLIVE Dynamic Simulator CADLIVE GUI Network Constructor CADLIVE is freely available at http://www.cadlive.jp/
From a Biochemical Map to Simulation GUI Network Constructor Biochemical Map Automatic conversion Dynamic Simulator Regulator-Reaction Equations Automatic conversion Mathematical Model Simulation
Gene Layer Transcription and Translation (TT) Equations
Protein Layer CMA: Conventional Mass Action Problems: Stiff Differential equations
Metabolic layer MM Type GMA: General Mass Action
DAEs are Converted from CMA By Two-Phase Partition Method (TPP) Binding Phase Reaction Phase Rapid-equilibrium approximation
Advantage of TPP Reducing the number of kinetic parameters Generating non-stiff DAEs
PROCESS FLOW Runge-Kutta based algorithms NDF (similar to matlab ode15s) Simulation Optimization on a GRID system Sensitivity and stability analysis
An Example for Automatic Simulation An ammonia assimilation system map The E. coli ammonia assimilation system consists of three layers: gene, protein, and metabolic layers and multiple feedback loops.
Demonstration CADLIVE GUI Network Constructor Regulator-reaction equations were automatically generated.
Export to XML file Regulator-Reaction Equations written in the XML format
Automatic Conversion Client- Server System XML file sent to CADLIVE Simulator CADLIVE Dynamic Simulator automatically converts Regulator-Reaction Equations into a mathematical model.
Automatic Conversion The gene and protein layers are converted into differential and algebraic equations (DAEs) through CMA with ordinary transcription-translation equations (TT). The metabolic layer was converted into simplified Michaelis-Menten type equations (MM).
Mathematical simulation and optimization The simulated time course appears.
Conclusion The CADLIVE Simulator is demonstrated to handle gene regulatory and metabolic networks at an intermediate level without going all the way down to exact biochemical reactions.