Four-dimensional realistic modeling of pancreatic organogenesis.
Organogenesis, the process by which organs develop from individual precursor stem cells, requires that the precursor cells proliferate, differentiate, and aggregate to form a functioning structure. This process progresses through changes in 4 dimensions: time and 3 dimensions of space-4D. Experimental analysis of organogenesis, by its nature, cuts the 4D developmental process into static, 2D histological images or into molecular or cellular markers and interactions with little or no spatial dimensionality and minimal dynamics. Understanding organogenesis requires integration of the piecemeal experimental data into a running, realistic and interactive 4D simulation that allows experimentation and hypothesis testing in silico. Here, we describe a fully executable, interactive, visual model for 4D simulation of organogenic development using the mouse pancreas as a representative case. Execution of the model provided a dynamic description of pancreas development, culminating in a structure that remarkably recapitulated morphologic features seen in the embryonic pancreas. In silico mutations in key signaling molecules resulted in altered patterning of the developing pancreas that were in general agreement with in vivo data. The modeling approach described here thus typifies a useful platform for studying organogenesis as a phenomenon in 4 dimensions.
Setty
Yaki
Y
Computational Biology Group, Microsoft Research, Cambridge CB3 0FB, United Kingdom.
Cohen
Irun R
IR
Dor
Yuval
Y
Harel
David
D
D000818:Animals; D019521:Body Patterning / Q000235:genetics; D055415:Bone Morphogenetic Protein 4 / Q000235:genetics; D003198:Computer Simulation; D051526:Fibroblast Growth Factor 10 / Q000235:genetics; D036341:Intercellular Signaling Peptides and Proteins / Q000235:genetics*; D051379:Mice; D008954:Models, Biological; D009154:Mutation; D038081:Organogenesis / Q000235:genetics; D010179:Pancreas / Q000196:embryology / Q000254:growth & development*
C525810:Bmp4 protein, mouse; D055415:Bone Morphogenetic Protein 4; C496464:Fgf10 protein, mouse; D051526:Fibroblast Growth Factor 10; D036341:Intercellular Signaling Peptides and Proteins