Supplementary Materialsijms-21-02050-s001. element KFL4 was distributed among the 3 types of dementia. Conclusions: Collectively, we determined differences and similarities in dysregulated pathways and transcription factors among the dementias. The distributed pathways and transcription elements may reveal a potential common etiology, whereas the differences may be useful for distinguishing dementias. nerve growth factor inducible (expression correlated with Braak staging in AD patients and it may be associated to changes in hippocampal volume prior to onset of cognitive impairment . Similarly, and isoforms were predictive of the variation of expression of AD-related genes and . Analysis of downregulated genes identified 3 genes shared between AD, VaD, and FTD. One example, VGF, has been widely studied in several neurodegenerative diseases. Most of the studies on VGF are biomarker studies. For example, VGF levels in cerebrospinal fluid (CSF) were lower in dementia with Lewy bodies compared to AD and healthy controls . Similarly, FTD patients carrying a progranulin mutation had lower CSF levels of VGF compared to pre-symptomatic carriers and non-carriers . Furthermore, VGF levels were lower in CSF of AD patients compared to controls and outperformed other biomarkers including CSF A1-42, phosphorylated tau, and hippocampal volume in predicting MCI to AD conversion . Replication of these biomarkers in a larger cohort of patients including different types of dementia will be important to assess their diagnostic value. We next performed a network and pathway-based analysis to identify shared and unique biological pathways associated with the different dementia types. This analysis was performed using the sets of differentially expressed genes identified for each dementia. Upregulated and downregulated genes were analyzed independently for each condition. Network and pathway analysis of upregulated genes in AD revealed a network enriched in pathways associated with adherens and tight junctions, MAPK, and PI3K-AKT signaling. One of the main gene hubs in Exherin kinase inhibitor the upregulated network was STAT3, a key transcriptional regulator of reactive astrogliosis . In this regard, pharmacological targeting of reactive astrogliosis pathway has shown promise in promoting cell survival and neuroprotection in several neurodegenerative diseases including AD. For example, deletion of STAT3 in astrocytes in the APP/PS1 model of AD decreased beta amyloid plaque formation and ameliorated Exherin kinase inhibitor spatial learning and cognitive decline . Interestingly, STAT3 has been shown to promote the activation of sphingosine kinases as well as the creation of sphingosine 1 phosphate (S1P) in swelling related pathways in tumor . In the framework of Advertisement, the increased loss of Rabbit polyclonal to Cytokeratin5 sphingosine kinase 2 activity and SP1 creation are fundamental pathogenic motorists of A-mediated neurodegeneration . Another upregulated pathway appealing can be PI3K-AKT signaling, which includes been thoroughly implicated in the pathogenesis of Advertisement given its important part mediating insulin results in the mind and other features in microglia and astrocytes . Collectively, our outcomes from the network Exherin kinase inhibitor evaluation support STAT3 as a significant transcriptional regulator in Advertisement. Its potential participation in PI3K-AKT and neuroinflammation warrants additional investigation. During regular ageing neurons may reduce the capability to control calcium mineral. The Exherin kinase inhibitor increased intracellular calcium levels can become toxic to the cells and initiate the neurodegenerative process. The calcium hypothesis in AD is well documented and drugs targeting calcium channels have been suggested as potential therapeutics in AD. In support of this hypothesis, network analysis of downregulated genes in the frontal cortex of AD subjects revealed a network centered on CALM3 and predominantly enriched in calcium signaling pathway. CALM3 is one of three genes encoding calmodulin protein, which is a calcium sensing and signal transducer protein that modulates several calcium ion channels [38,39]. Although modifications in Quiet3 never have yet been recorded in Advertisement, given its practical Exherin kinase inhibitor role in calcium mineral signaling, it really is reasonable to hypothesize that it could be involved with calcium mineral dysregulation in Advertisement individuals. Long term research looking into the practical part of Quiet3 will become essential to understand its implications in AD. In contrast to AD, network analysis.