A Liver-Centric Multiscale Modeling Framework for Xenobiotics.

A Liver-Centric Multiscale Modeling Framework for Xenobiotics.
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DOI:
10.1371/journal.pone.0162428
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发表时间:
2016
期刊:
影响因子:
3.7
通讯作者:
Glazier JA
Glazier JA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Sluka JP;Fu X;Swat M;Belmonte JM;Cosmanescu A;Clendenon SG;Wambaugh JF;Glazier JA

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We describe a multi-scale, liver-centric in silico modeling framework for acetaminophen pharmacology and metabolism. We focus on a computational model to characterize whole body uptake and clearance, liver transport and phase I and phase II metabolism. We do this by incorporating sub-models that span three scales; Physiologically Based Pharmacokinetic (PBPK) modeling of acetaminophen uptake and distribution at the whole body level, cell and blood flow modeling at the tissue/organ level and metabolism at the sub-cellular level. We have used standard modeling modalities at each of the three scales. In particular, we have used the Systems Biology Markup Language (SBML) to create both the whole-body and sub-cellular scales. Our modeling approach allows us to run the individual sub-models separately and allows us to easily exchange models at a particular scale without the need to extensively rework the sub-models at other scales. In addition, the use of SBML greatly facilitates the inclusion of biological annotations directly in the model code. The model was calibrated using human in vivo data for acetaminophen and its sulfate and glucuronate metabolites. We then carried out extensive parameter sensitivity studies including the pairwise interaction of parameters. We also simulated population variation of exposure and sensitivity to acetaminophen. Our modeling framework can be extended to the prediction of liver toxicity following acetaminophen overdose, or used as a general purpose pharmacokinetic model for xenobiotics.
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