To mimic the proposed autocrine/paracrine loop in human, transgenic murine models with tissue-specific PRL expression were used.
This is demonstrated in a variety of mouse models with tissue-specific knockout of FASN expression that are characterized by the absence of an effect under non-stress conditions (Chirala et al., 2003, Shearn et al., 2014).
Briefly, the disposition of rosuvastatin was described using a whole-body PBPK model with tissue partition coefficients predicted by the method of Rodgers and Rowland, assuming perfusion-limited distribution for tissues other than the liver and gut.
For each gene g (g = 1,⋯, G) and study i (i = 1,.., I = 4), they fit a simple linear regression model with tissue type as the covariate and expression measurement as the response.
To investigate whether genes were differentially expressed between the two tissues, we applied a linear mixed model with tissue, MetSyn case control status, gender and plate were as fixed effects, and subject as a random effect using MAANOVA (44), as previously described in Min et al. (30).
To identify genes that were truly differentially expressed between the cancer and healthy tissues, the authors used permutation method by fitting linear models with permuted tissue labels to calculate the false discovery rate (FDR).
The explanatory power for apparent modulus of models with a tissue modulus coefficient of variation (COV) range of 21 31% was 13% greater than homogeneous models (COV=0).
We saw no effect of ibandronate on the breast cancer cells in 2-D or in pre-cultured 3-D models with existing tissue formation, supporting our contention that drug efficacy is due to the effects of HA binding.
Extensive studies have shown that DLC1 utilizes this RhoGAP activity to suppress cell proliferation [15], [18], [23], [25] [29], trigger apoptosis [25] and to reduce cell migration [26], [28], cell invasion and the resultant cancer metastasis in cell lines as well as mouse models with different tissue origins [29] [31].
In tumor models with heterogeneous tissue perfusion, the treated and untreated curves may not be distinguished as well (Fig. 4), in which case there may be greater dependence on contrast dose for detecting perfusion changes.
By combining strategies from ectopic tissue induction models with methods from tissue engineering, new approaches for studying lymphoid tissue development and immunotherapy may be possible.
