TIE2 protein (Fc Chimera)
- Known as:
- TIE2 protein (Fc Chimera)
- Catalog number:
- 30r-at057
- Product Quantity:
- USD
- Category:
- -
- Supplier:
- Fitzgerald industries international
- Gene target:
- TIE2 protein ( Chimera)
Related genes to: TIE2 protein (Fc Chimera)
- Gene:
- TEK NIH gene
- Name:
- TEK receptor tyrosine kinase
- Previous symbol:
- VMCM
- Synonyms:
- TIE2, TIE-2, VMCM1, CD202b
- Chromosome:
- 9p21.2
- Locus Type:
- gene with protein product
- Date approved:
- 1994-05-24
- Date modifiied:
- 2018-08-07
Related products to: TIE2 protein (Fc Chimera)
Related articles to: TIE2 protein (Fc Chimera)
- The hyperactivating p.L914F mutation in TIE2, a receptor tyrosine kinase essential for vascular development and function, drives sporadic venous malformation (VM). While germline or early developmental expression of this mutation is thought to be lethal, mosaic or somatic expression is expected to result in VM disease. However, this has never been shown experimentally. Therefore, we utilized a genetic murine model of TIE2 p.L914F to examine the effects of the mutation in the mosaic condition. Using an mTmG reporter mouse, we show that the CMV-Cre mouse line drives mosaic Cre recombination during early embryonic development. We then crossed B6-Tg(Rosa26-TIE2) (TIE2) mice to CMV-Cre mice to drive mosaic expression of TIE2 p.L914F during development. The offspring of these mice did not show the expected Mendelian ratio of mutant to control animals, indicating that mutant mice experienced partial lethality. Furthermore, surviving CMV-Cre;TIE2 mice developed massively enlarged venous/capillary vessels in various tissues, reminiscent of the VM phenotype. In this study, we show that mosaic embryonic expression of the VM-causative mutation TIE2 p.L914F causes partial embryonic lethality and the formation of VM in surviving offspring. This is a novel in vivo model of mutant TIE2-driven VM disease which illustrates that the extent of the mutational event during development will contribute to varying levels of severity in the VM phenotype. - Source: PubMed
Bischoff Lindsay JSherpa ChhiringSchrenk SandraBoscolo Elisa - Cornea, a transparent avascular tissue, develops inflammation, neovascularization, and vision-limiting scarring following injury. This study sought to characterize vascular-focused single-cell RNA-seq (scRNA-seq) profiling between naïve and traumatic rabbit corneas collected 2 weeks after alkali trauma. Seurat-based vascular clustering, ligand‒receptor (LR) niche signaling, interpretable downstream directional pathway prioritization, and LR-focused pathway annotation were used. Among the fourteen identified clusters, the neovessel cluster was subclustered. Vascular heterogeneity and curated vascular gene sets were identified/quantified across vascular subclusters using percentage-expressing cells, average normalized expression, and module scores. The expression-supported LR scoring framework was implemented after integrating the mean normalized expression and the fraction of expressing cells for analyzing the cellular communication of major surrounding corneal cell populations, including keratocyte, myofibroblast, immune, remodeling, sensory-nerve and Schwann cells with receptors in vascular cells. Subclustering of the neovessel cluster identified two major vascular states, an endothelial-enriched population and a perivascular mural-enriched population. Injury-driven expansion of the neovascular niche was indicated by an increase in both vascular cell populations in traumatic cornea than naïve. Across curated gene sets, endothelial cells expressed gene signatures consistent with angiogenic activation and endothelial barrier junction features, whereas perivascular mural cells were more enriched for contractile stabilization, remodeling and fibrosis coupling. Both endothelial and perivascular mural ligand/receptor had a broad incoming LR connectivity to keratocyte, myofibroblast, remodeling, immune, sensory-nerve and Schwann cell populations. Neovessel-targeted sc-RNAseq profiling revealed that VEGF, PDGF, ANGPT/TEK, chemokines, related axes, vascular gene programs, and signaling interactions in traumatic cornea as prominent contributors. - Source: PubMed
Publication date: 2026/04/28
Kumar RajnishSinha Nishant RHofmann Alexandria CMohan Rajiv R - The one health perspective is an integrative and holistic approach that recognizes the interconnection and interdependence of human, animal and plant health and aims to improve each sustainably. This perspective has gained particular importance following the coronavirus disease-2019 pandemic and has been acknowledged as a component of public health. Fungal infections also pose significant risks to ecosystems, ranging from crops to animals and humans. These risks partly arise from human and animal mobility and have increased alongside climate change. Therefore, food safety has become an integral part of developing societies. Apples are the most widely consumed fruit worldwide. They are known to have multiple health benefits and have been reported to reduce the risk of chronic diseases such as cancer, diabetes, heart disease and stroke. Previous studies have shown that important human pathogens, including multidrug-resistant Candidozyma auris and Candida parapsilosis were isolated from apple peels. Moreover, although rarely, dematiaceous fungi such as Exophiala dermatitidis and Exophiala phaeomuriformis, which can also be pathogenic for humans and animals, have been identified in apples. The aims of the study were to investigate, the presence of extremotolerant Exophiala species in apples that undergo post-harvest storage processes and are sold in local markets across different regions of Türkiye, as well as the polyaromatic hydrocarbon (PAH) levels in the apples from which these isolates were obtained. Additionally, given their resistance to these molecules, the value of culturing Exophiala species on apples as a biological indicator of PAH pollution and to discuss the findings within the framework of the One Health perspective and to draw attention to this issue were aimed in the study. In the present study, the presence of dematiaceous fungi was investigated in 549 apples collected from local markets in 24 different provinces of Türkiye. Sampling was performed from apple skins using sterile swabs and inoculation was carried out on Sabouraud dextrose agar, Staib agar and Czapek media. Isolates compatible with dematiaceous fungi were subsequently identified by sequencing the rDNA internal transcribed spacer region. Antifungal susceptibility testing against five different triazoles was performed using the CLSI microdilution method. Furthermore, benzo[a]anthracene, benzo[b]fluoranthene, benzo[a] pyrene, and chrysene were measured as indicators to determine the amount of polycyclic aromatic hydrocarbons (PAHs) in the skins of apples from which dematiaceous fungi were recovered. In this study, E.phaeomuriformis was identified in four apples (0.7%). These isolates were detected in the provinces of Ankara, Antalya (Finike district), Kayseri, and Kars (Sarıkamış district). Antifungal susceptibility testing was performed for three isolates, and low MIC values were found for all triazole antifungals except fluconazole.. The levels of the four compounds, considered primary environmental pollutants were determined to be high in the skins of all four apples according to the European Union and Turkish Food Codex limits. This suggests that E.phaeomuriformis, which is known to utilize aromatic hydrocarbons as a carbon source, could be used as a biological indicator of PAH pollution. Additionally, apple skins were considered to represent an oligotrophic habitat. In conclusion, beyond food safety, the need to improve and strengthen public health services is evident. - Source: PubMed
Biltekin NurcihanÜnal Gözde GülcanOnaç CananBingöl OğuzhanAlkaya DenizDöğen AylinKarakoyun Ayşe SultanÜnal NevzatIlkit MacitErgin Çağrı - Currently, the increasing isolation rates of New Delhi metallo-beta-lactamase (NDM) positive Klebsiella pneumoniae and the lack of a standard algorithm for the treatment of infections caused by these isolates necessitate the search for effective treatment options. This study aimed to investigate the efficacy of the combination of ceftazidime-avibactam (CZA), frequently used in the treatment of carbapenem-resistant Enterobacterales (CRE) infections in recent years with aztreonam (AZT), which is expected to become available in our country soon and the combination of meropenem (MEM) with colistin (COL), which is frequently preferred in our hospital against NDM-positive K.pneumoniae isolates using in vitro synergy tests and to determine the susceptibility of these isolates to cefiderocol (FDC), which is recommended as an alternative treatment option in CRE infections. A total of 63 K.pneumoniae isolates, isolated from clinical samples in the Bacteriology Laboratory of the Department of Medical Microbiology at Süleyman Demirel University Faculty of Medicine and identified as NDM positive by real-time polymerase chain reaction, were included in the study. The susceptibility of the isolates to CZA, AZT, MEM and COL was tested by broth microdilution method and FDC susceptibility was tested by Kirby-Bauer disk diffusion method according to the European Committee on Antimicrobial Susceptibility Testing criteria. The efficacy of CZA-AZT and MEM-COL combinations against NDM positive K.pneumoniae isolates was tested using the checkerboard method. Time-kill assays were performed to investigate the bactericidal activity of CZA-AZT and MEM-COL combinations at different concentrations and time points in five isolates harboring different carbapenemase genes (two NDM+OXA-48, one NDM, one NDM+OXA-48+KPC, and one NDM+OXA-48/VIM/IMP). All isolates included in our study were found as resistant to CZA, AZT and MEM, while 77.8% were resistant to FDC and 54% were resistant to COL. According to the checkerboard test results, the CZA-AZT combination showed synergistic interaction against all isolates, while the MEM-COL combination exhibited synergistic interaction against 57.1% of the isolates, additive interaction against 25.4% and undefined interaction against 17.5%. In time-kill assays, synergistic activity was observed at various time points in all isolates with the CZA-AZT combination and in four isolates with the MEM-COL combination, while bactericidal activity was detected at certain time points. Although an undefined interaction was determined in the checkerboard test against one isolate (NDM+OXA-48 positive) with the MEM-COL combination, synergistic activity and bactericidal effect were observed at the 12th and 24th hours with the 1xMIC MEM + 1xMIC COL combination in the time-kill assay against the same isolate. In conclusion, the combination of CZA-AZT seems to be a promising treatment option in infections caused by NDM positive K.pneumoniae isolates. In cases where CZA-AZT combination therapy cannot be applied, MEM-COL combination therapy may be considered as an alternative treatment option. In situations where both treatment options cannot be used, cefiderocol monotherapy may be considered as an alternative in selected cases, given the low and heterogeneous susceptibility rates among NDM-positive isolates, provided that close clinical and microbiological monitoring is ensured. However, careful monitoring is required during cefiderocol therapy and treatment modification should be considered in cases of clinical non-response. - Source: PubMed
Kaygisiz GülşahSesli Çetin EmelŞirin Mümtaz CemCicioğlu Aridoğan Buket - Neuroimmune signaling across the peripheral-vascular-glial axis is increasingly recognized as a driver of both age‑related brain vulnerability and the earliest stages of neurodegenerative disease, including Alzheimer disease. Evaluating this axis in vivo remains challenging due to limited neuroinflammatory imaging biomarkers. We utilized [11C]CS1P1 positron emission tomography (PET) to quantify sphingosine-1-phosphate receptor 1 (S1PR1) availability alongside plasma proteomics in 42 cognitively normal individuals (age 21-82). Through differential abundance analysis and structural equation modeling (SEM), we identified a multi-compartment neuroimmune cascade linking peripheral T-cell activation (CD40LG), vascular endothelial disruption (ICAM1/TEK), central S1PR1 upregulation, and reactive astrogliosis (GFAP). Mediation analysis estimated this S1PR1 axis accounts for 25.5% of the total effect of CD40LG on GFAP. This cascade appears coupled to the astrocytic immune response and is exacerbated by underlying amyloid-beta pathology. These findings suggest [11C]CS1P1 may serve as an in vivo tool for evaluating peripheral-to-central immune crosstalk. - Source: PubMed
Publication date: 2026/04/19
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