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14-3-3 gene expression exerts isoform-dependent functions in sinonasal pathophysiology
Agapi Kataki1, Leonidas Alevizos1, Andreas Lazaris2
1Laboratory of Surgical Research, 1st Department of Propaedeutic Surgery, University of Athens Hippocration Hospital, 114 Queen's Sofia Avenue, 11527 Greece.
Pathology, Research and Practice
|November 26, 2013
Summary
This study found that 14-3-3β and 14-3-3θ protein expression is increased in sinonasal inverted papillomas (IP), suggesting their role in the proliferative and inflammatory processes involved in IP development.
Area of Science:
- Otorhinolaryngology
- Molecular Biology
- Oncology
Background:
- 14-3-3 proteins are crucial regulators of cellular processes.
- Aberrant expression of 14-3-3 isoforms is implicated in various cancers.
- Their role in sinonasal pathophysiology, particularly inverted papillomas (IP), requires further elucidation.
Purpose of the Study:
- To investigate the expression profiles of 14-3-3β and 14-3-3θ isoforms in different sinonasal conditions.
- To correlate 14-3-3β expression with proliferative activity in inverted papillomas.
- To understand the differential roles of these isoforms in sinonasal pathophysiology.
Main Methods:
- Immunohistochemistry and flow cytometry were employed on tissue samples.
- Samples included inverted papillomas (IP), nasal polyps (NP), polyps with IP (NPIP), and normal epithelium (NE).
- Proliferating cell nuclear antigen (PCNA) immunostaining was used to assess proliferation.
Main Results:
- 14-3-3β expression was significantly upregulated in IP compared to NP and NE.
- 14-3-3β expression positively correlated with proliferative activity (PCNA) in IP.
- 14-3-3θ expression was also increased in IP and NPIP compared to NP and NE.
Conclusions:
- Differential expression of 14-3-3β and 14-3-3θ isoforms is observed in sinonasal pathophysiology.
- 14-3-3β is implicated in the proliferative processes of inverted papillomas.
- 14-3-3θ may play a role in both proliferative and inflammatory aspects of IP formation.
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