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Mimicking the Function of Signaling Proteins: Toward Artificial Signal Transduction Therapy
Published on: September 29, 2016
TRAF7 in signaling and disease: emerging mechanisms and clinical implications
Albert Orock1, Jeffrey A Zuccato1, Khanh Phan1
1Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
Abstract:
Tumor necrosis factor receptor-associated factors (TRAFs) are a family of 7 signaling proteins that have regulatory roles in multiple fundamental cellular processes, including immunity, inflammation, apoptosis, permeability, and cell proliferation. TRAF7 is the most recently described with unique features distinguishing it from other TRAFs. It is an E3 ubiquitin ligase that activates MEKK3 and KLF2/4 signaling, inhibits MEK1/2 and c-Myb along with an NF-κβ-modulator, and stabilizes VE-cadherins in cell junctions. Germline mutations in TRAF7 lead to developmental delays and the dysmorphic features associated with TRAF7 syndrome. Somatic TRAF7 mutations are associated with subsets of meningiomas, mesotheliomas, and perineuriomas. Additionally, TRAF7 altered expression is associated with poorer prognoses in hepatocellular carcinoma, breast cancer, and prostate cancer. This review comprehensively describes the physiological roles of TRAF7 and the pathophysiology of clinical conditions with TRAF7 alterations. We highlight important directions for future work to improve our understanding of the mechanisms underlying TRAF7 related disease, identify prognostic biomarkers that help guide clinical decision making, and potentially identify novel therapeutic targets to expand our treatment options for these patients.
Insights
Tumor necrosis factor receptor-associated factor 7 (TRAF7) is crucial for cell processes. TRAF7 alterations link to developmental disorders and cancers, necessitating further research for biomarkers and therapies.
Area of Science:
- Molecular Biology
- Cellular Signaling
- Cancer Biology
Background:
- Tumor necrosis factor receptor-associated factors (TRAFs) are key signaling proteins.
- TRAF7, the newest TRAF, has unique E3 ubiquitin ligase activity and regulates multiple pathways.
- TRAF7 mutations are implicated in developmental disorders and various cancers.
Purpose of the Study:
- To comprehensively review the physiological roles of TRAF7.
- To explore the pathophysiology of clinical conditions associated with TRAF7 alterations.
- To identify future research directions for TRAF7-related diseases.
Main Methods:
- Literature review of TRAF7's physiological functions.
- Analysis of clinical data linking TRAF7 mutations/expression to diseases.
- Synthesis of current knowledge on TRAF7's role in immunity, inflammation, apoptosis, and cancer.
Main Results:
- TRAF7 activates MEKK3 and KLF2/4 signaling, inhibits MEK1/2 and c-Myb, and stabilizes VE-cadherins.
- Germline TRAF7 mutations cause developmental delays and dysmorphic features (TRAF7 syndrome).
- Somatic TRAF7 mutations are found in meningiomas, mesotheliomas, and perineuriomas; altered expression correlates with poor prognosis in liver, breast, and prostate cancers.
Conclusions:
- TRAF7 plays diverse roles in fundamental cellular processes.
- TRAF7 alterations are linked to significant human diseases, from developmental syndromes to cancers.
- Further research is needed to understand TRAF7 mechanisms, identify biomarkers, and develop targeted therapies.
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