We found in ChIP assays that two of the four TRE present in the human ZAG promoter

Designed to bind to EGFR Exon 19 wildtypic sequences in the region of potential deletions leading to the dissociation of the probe during melting curve analysis at different temperatures depending on the sequence of the respective deletion. While these results are promising, we are aware that the patient population analyzed here is very small and validation in larger patient populations including additional mutations is required. Currently, equally sensitive mutation detection assays covering multiple therapy-relevant regions of the EGFR gene and other oncogenes are being developed. In summary, we have described a novel strategy based on CTC enrichment and highly sensitive detection of somatic mutations, which can be applied for mutational profiling and monitoring of treatment efficacy in patients with EGFR-mutant NSCLC. By assay optimization we have shown that the problem of notoriously low CTC counts in stage IV NSCLC can be overcome. This may be another step toward the vision of a “liquid biopsy” for hazardfree molecular diagnostics and disease monitoring in patients with AbMole D-Pantothenic acid sodium metastatic lung cancer. Apart from an inducer of cachexia in the setting of cancer, ZAG is closely related to obesity. Human adipocytes express and secrete ZAG, with ZAG expression being regulated particularly through TNF-a and the PPARc nuclear receptor. The action of ZAG is associated with downregulated lipogenic enzymes and upregulated lipolytic enzyme expressions in adipose tissue of mice. Expression of the lipolytic enzymes, such as, adipose triglyceride lipase and hormone-sensitive lipase in white adipose tissue were increased two-fold after ZAG administration in rat. In addition, there was almost a two-fold increased expression of uncoupling proteins 1 and 3 in brown adipose tissue and WAT, which could contribute to increase substrate utilization. Serum ZAG levels have been inversely associated with body weight and percentage of body fat in both human subjects and rodents. In addition, we have previously reported that ZAG is downregulated in adipose tissue and the liver of obese patients. Furthermore, macrophage-associated inflammation may play a significant role in the downregulation of ZAG in adipose tissue in obesity. All these findings point to ZAG not only as a new candidate in the pathogenesis of obesity but also a new therapeutic target. Weight loss is a well-known effect of hyperthyroidism but there is no information whether thyroid hormones could enhance ZAG production in either liver or adipose tissue. In order to shed light to this issue we performed in vitro experiments using HepG2 cells and human adipocytes. In addition, in order to have the in vivo proof of concept we determined ZAG circulating levels, mRNA and protein levels in both liver and visceral adipose tissue of C57BL/6 mice. Finally ZAG serum levels were measured in a cohort of patients before and after controlling their hyperthyroidism. The mechanisms regulating ZAG expression are far from being elucidated. It has been reported that PPARc nuclear receptor activation, glucocorticoids and b3-adrenoreceptor agonists up-regulate ZAG expression, whereas TNF-a and AbMole Sarafloxacin HCl eicosapentaenoic acid have an inhibitory effect in adipose tissue. In addition, we previously reported that TNF-a and IL-6 significantly decrease ZAG production in HepG2 cell cultures. In the present study we provide first evidence that T3 upregulates ZAG expression in HepG2 cells. Our experiments showed that thyroid hormone increases hepatic ZAG production in a dose dependent manner. In addition, the cloning of the ZAG proximal promoter revealed the presence of four thyroid hormone receptor binding sites and we showed in luciferase reporter gene assays that ZAG promoter respond to thyroid hormone treatment.

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