In addition to mutation, over- or ectopic expression, antigenicity of a protein expressed by tumor cells may be determined by post-translational modifications or altered accessibility.
A description of the most commonly involved networks and their disruption through abnormal DNA methylation, histone modifications or altered miRNA expression is as follows.
It should be noted that determination of UPR protein levels not always allows assessment of UPR activation since part of the UPR relies on mechanisms that involve protein cleavage, post-translational modification, intracellular distribution or altered conformation.
Since RSV treatment of the AR cells affected neither AR nuclear translocation nor the AR DNA binding, we proposed that RSV affects AR transcriptional activity by either affecting AR modification directly or altering the recruitment of AR cofactors indirectly.
This could include altered levels or post-translational modification of ER (or both) or altered interaction of ER with co-regulator proteins.
This could be mediated on the molecular level, e.g., by altered posttranslational modification of Nrf2, altered binding partners in the coactivator complex, or altered binding behavior at ARE-dependent promoters (duration, strength, preference for certain promoters).
These markers are represented by altered enzymatic activity, changes in protein expression or posttranslational modification, altered gene expression, protein or lipid metabolites, or a combination of these parameters [ 1].
Critical review over the last 3 years was conducted, and current opinions on pharmacological targets include agents aimed at prevention of transient lower esophageal sphincter relaxation, modification of the physico-chemical composition of gastric contents, modification of gut motility, or altering sensory thresholds to ameliorate the troublesome symptoms.
Frame shift modifications may result in unquestionable protein sequence modification and consequently altered or null functional characteristics.
