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Arslan FD, Kocak A, Aydın C, Pala EE, Oncel D, Diniz G, Kaya T, Ugurlu L, Degirmenci M, Ozkan B, Soysal Y, Said HM. Evaluation of potential tumor markers that may predict neoadjuvant treatment efficiency in rectal cancer. TURKISH JOURNAL OF BIOCHEMISTRY 2021; 46:445-454. [DOI: 10.1515/tjb-2020-0507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/01/2024]
Abstract
Abstract
Objectives
The recurrence of rectal cancer or its resistance to neoadjuvant treatment develops due to the adaptation to hypoxia, apoptosis or autophagy. Survivin, one of the inhibitors of apoptosis; Beclin 1, which is a positive regulator in the autophagy pathway; and hypoxia-inducible factor-1α (HIF-1α) and carbonic anhydrase-9 (CA9), which are associated with tumor tissue hypoxia, may be related to resistance to treatment. Our aim was to evaluate the potential tumor markers that may help to monitor the response to neoadjuvant treatment in locally advanced rectal cancer (RC).
Methods
Twenty-five patients with locally advanced RC were included in the study. Gene expression and protein levels of Beclin 1, Survivin, HIF-1α, and CA9 were analyzed in fresh tissue specimens and blood samples. The relationships of these markers to tumor staging and regression grade were evaluated.
Results
Higher blood CA9 gene expression levels and lower blood HIF-1α protein levels were found in the response group according to tumor regression grade. After neoadjuvant treatment, tissue Beclin 1 and blood Survivin gene expressions and tissue CA9, blood Beclin 1 and blood HIF-1α protein levels decreased significantly.
Conclusion
Beclin 1, Survivin, HIF-1α ve CA9 may help to predict the effects of the applied treatment approach.
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Affiliation(s)
- Fatma Demet Arslan
- Department of Medical Biochemistry , University of Health Sciences, Tepecik Training and Research Hospital , Izmir , Turkey
- Department of Molecular Medicine, Institute of Health Sciences , Dokuz Eylül University , Izmir , Turkey
| | - Ayse Kocak
- Department of Molecular Medicine, Institute of Health Sciences , Dokuz Eylül University , Izmir , Turkey
| | - Cengiz Aydın
- General Surgery Clinic , University of Health Sciences, Tepecik Training and Research Hospital , Izmir , Turkey
| | - Emel Ebru Pala
- Medical Pathology Clinic , University of Health Sciences, Tepecik Training and Research Hospital , Izmir , Turkey
| | - Dilek Oncel
- Radiology Clinic , University of Health Sciences, Tepecik Training and Research Hospital , Izmir , Turkey
| | - Gulden Diniz
- Medical Pathology Clinic , University of Health Sciences, Tepecik Training and Research Hospital , Izmir , Turkey
| | - Tayfun Kaya
- General Surgery Clinic , University of Health Sciences, Tepecik Training and Research Hospital , Izmir , Turkey
| | - Levent Ugurlu
- General Surgery Clinic , University of Health Sciences, Tepecik Training and Research Hospital , Izmir , Turkey
| | - Mustafa Degirmenci
- Oncology Clinic , University of Health Sciences, Tepecik Training and Research Hospital , Izmir , Turkey
| | - Bulent Ozkan
- Department of Biostatistics , Faculty of Medicine, Katip Çelebi University , Izmir , Turkey
| | - Yasemin Soysal
- Department of Molecular Medicine, Institute of Health Sciences , Dokuz Eylül University , Izmir , Turkey
| | - Harun Muayad Said
- Department of Molecular Medicine, Institute of Health Sciences , Dokuz Eylül University , Izmir , Turkey
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