Serum Peptidomic Profiling Reveals Systemic JAK-STAT and PI3K-Akt Dysregulation in Feline Chronic Gingivostomatitis
Ontology highlight
ABSTRACT:
ORGANISM(S): Cellular Organisms
SUBMITTER: Sekkarin Ploypetch
PROVIDER: PXD075136 | JPOST Repository | Tue Mar 03 00:00:00 GMT 2026
REPOSITORIES: jPOST
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| CN01_1.mzXML | Mzxml | |||
| CN01_2.mzXML | Mzxml | |||
| CN01_3.mzXML | Mzxml | |||
| CN02_1.mzXML | Mzxml | |||
| CN02_2.mzXML | Mzxml |
Items per page: 5 1 - 5 of 20 |
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Project description:The purpose of this study was to characterize the transcriptomic alterations accompanying the inflammation involved in feline chronic gingivostomatitis (FCGS). Towards this goal next-generation sequencing (NGS)-based gene expression profiling (RNA-Sequencing; RNA-Seq) was performed on matched pairs of FCGS diseased and healthy tissues obtained from three feline subjects.
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Project description:Fibrosarcomas (FSA) are rare malignant soft tissue tumors characterized by low chemo- and radiosensitivity. Development of novel treatment strategies for human FSA is hindered by the low incidence and the absence of suitable clinical models. Interestingly, aggressive FSA occur more frequently in domestic cats, hence potentially representing a clinically amenable model to assess novel therapies such as targeted imaging or theranostics. However, a lack of molecular characterization of FSA and adjacent normal tissue (NT) in both species hinders identification of tumor-specific targets and undermines the translational potential of feline FSA. Combining laser-capture microdissection, RNA sequencing and LC-MS/MS, we perform comprehensive profiling of 30 feline FSA and matched skeletal muscle, adipose and connective tissue. Clear inter-tissue differences allow identification of significantly upregulated and tumor-exclusive features that represent potential targets for diagnostic and therapeutic approaches. While feline FSA are characterized by hyperactive EIF2, TP53 and MYC signaling, immune-related and neuronal pathways emerge as modulators of tumor aggressiveness and immunosuppression. A high degree of molecular similarity with canine and human FSA allows identification of conserved cross-species tumor targets. Significant enrichment in DNA repair pathways in feline FSA are shown to be associated with aggressive clinical behavior in human STS. Finally, we leverage the molecular profiles to identify vulnerabilities, including sensitivity to ATR and PARP inhibition as potential treatment for feline FSA. In conclusion, this detailed landscape provides a rich resource to identify target candidates and therapeutic vulnerabilities within and across species and supports feline FSA as relevant models for the human disease.
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Project description:This study looks at the effect of dietary manipulation on the development of hepatic steatosis and changes in hepatic gene expression in a feline model. We used microarray analysis to examine changes in hepatic gene transcription in response to Trans fat, High Fructose Corn Syrup (HFCS) and/or Monosodium Glutamate (MSG) in the domestic cat. The use of human Affymetrix arrays for the study of feline gene expression has previously been validated by Dowling and Bienzle, 2005, Journal of General Virology. 86(Pt 8), 2239-48 (PMID 16033971). Our study animals were bred from female Felis catus previously placed on one of 4 different dietary regimens for a period of 3 weeks prior to mating. The four dietary regimens used in this study were: [1] Standard Chow Control feline diet (Test Diet Purina catalog #5003); [2] MSG diet consisting of Control diet with 1.125% added Monosodium Glutamate (Diet A: Test Diet Purina catalog #5C1J); [3] Trans-fat/HFCS diet, containing 8.6% Trans fat and 24% HFCS (Diet B: Test Diet Purina catalog #5B4K); and [4] Trans-fat/HFCS and MSG diet, containing 8.6% Trans fat, 24% HFCS and 1.125% MSG (Diet C: Test Diet Purina catalog #5C1H). Following mating, the 4 groups of dams were maintained on their respective diets throughout the gestation and nursing period. Male offspring used in the following experiments were weaned onto the same diets and maintained on their respective dietary regimens until they reached 9 months of age. Hepatic tissues (4-5 per diet group) were used for RNA extraction and hybridization on Affymetrix microarrays.
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