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The role of STATs in lung carcinogenesis: an emerging target for novel therapeutics
Michalis V Karamouzis1, Panagiotis A Konstantinopoulos, Athanasios G Papavassiliou
1Department of Biological Chemistry, Medical School, University of Athens, 75, M. Asias Street, 11527, Athens, Greece.
Abstract:
The signal transducer and activator of transcription (STAT) proteins are a family of latent cytoplasmic transcription factors, which form dimers when activated by cytokine receptors, tyrosine kinase growth factor receptors as well as non-receptor tyrosine kinases. Dimeric STATs translocate to the nucleus, where they bind to specific DNA-response elements in the promoters of target genes, thereby inducing unique gene expression programs often in association with other transcription regulatory proteins. The functional consequence of different STAT proteins activation varies, as their target genes play diverse roles in normal cellular/tissue functions, including growth, apoptosis, differentiation and angiogenesis. Certain activated STATs have been implicated in human carcinogenesis, albeit only few studies have focused into their role in lung tumours. Converging evidence unravels their molecular interplays and complex multipartite regulation, rendering some of them appealing targets for lung cancer treatment with new developing strategies.
Insights
Signal transducers and activators of transcription (STATs) are key transcription factors involved in cell functions. Their role in lung cancer is increasingly recognized, offering potential therapeutic targets.
Area of Science:
- Molecular Biology
- Cell Signaling
- Oncology
Background:
- Signal transducers and activators of transcription (STATs) are latent cytoplasmic transcription factors.
- STATs dimerize upon activation by various receptors and kinases.
- Activated STAT dimers translocate to the nucleus to regulate gene expression.
Purpose of the Study:
- To review the role of STAT proteins in cellular functions.
- To explore the involvement of STATs in human carcinogenesis, particularly in lung tumors.
- To identify STATs as potential therapeutic targets for lung cancer.
Main Methods:
- Literature review of STAT protein function and regulation.
- Analysis of STAT involvement in normal cellular processes (growth, apoptosis, differentiation, angiogenesis).
- Examination of evidence linking STAT activation to lung tumorigenesis.
Main Results:
- STATs regulate diverse cellular functions through specific gene expression programs.
- Aberrant STAT activation is implicated in human carcinogenesis.
- Limited research exists on STATs' specific role in lung tumors.
Conclusions:
- STAT proteins play critical roles in normal cellular functions.
- Activated STATs are implicated in cancer development.
- STATs represent promising therapeutic targets for lung cancer treatment due to their complex regulation and interplays.
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