When side effects do manifest in preclinical species or in clinical trial participants, human genetics of the target can be used to build hypotheses of whether the side effects are target-mediated phenotypes intrinsic to the therapeutic mechanism, or off-target effects that could be engineered out of the drug.
We observed both increased and decreased phosphorylation of these substrates indicating that the radiation treatment does not lead to a general increase in PKA activity, but that the effects are targeted to specific PKA substrates in different subcellular compartments.
To test whether the observed effects were target sequence-specific, a nonesense shRNA expressing pEPI vector or solely the pEPI-luciferase backbone was established in HBV-Met cells [see Additional file 1: Figure S2].
A single design is unlikely to be the model for chemoprevention of cancer, even for prevention of a single subtype of cancer, because of the heterogeneity of drugs under investigation and the variety of biologic effects being targeted.
The remarkable concordance between the transcription patterns of the two different type I anti-CD20 antibodies strongly indicates that the observed effects were target-mediated.
Remarkably, the early-diet epigenetic silencing effects were targeted to a regulatory element distal to the active promoter - an enhancer element.
In the review the authors note that the interventions that reported the largest effects were targeted at vulnerable groups, including those with existing health conditions and the elderly.
The effect was target specific because other podocyte-specific genes remained unchanged.
Whether the reduced effect on transcriptional activation in targeting an endogenous gene, compared with a reporter system, is a general phenomenon or whether the effect is target gene-specific remains to be studied systematically.
Second, for the climate change mitigation effect, only the carbon storage effect and energy substitution effect were targeted, and it was not feasible to address the overall mitigation effect that takes into account the material substitution effect.
