Relationship Between PIK3CA Amplification and P110α and CD34 Tissue Expression as Angiogenesis Markers in Iranian Women with Sporadic Breast Cancer
Publish place: IRANIAN JOURNAL of PATHOLOGY، Vol: 13، Issue: 4
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJP-13-4_009
تاریخ نمایه سازی: 23 تیر 1398
Abstract:
Background and Objective: The PI3K/AKT/mTOR pathway is known to play an important role in regulating angiogenesis both in normal and breast cancer (BC) tissues. PIK3CA amplification was reported in various malignancies, including approximately 10% of BC cases. The aim of this study was to identify the frequency of PIK3CA amplification in Iranian female patients suffering from BC. Additionally, possible association between PIK3CA amplification and P110α expression with microvascular density (MVD) was examined.Methods: DNA samples were extracted from paraffin embedded tumor tissue blocks and copy number changes were evaluated by MLPA Technique. The results were analyzed by coffalyzer software. The tissue expression of P110α and CD34 was assessed using immunohistochemistry.Results: Ten out of 40 samples (17.5%) showed amplification in PIK3CA gene and 22 out of 40 samples (55%) showed overexpression in P110α. For CD34, from 40 samples, 20 (50%), 15 (37.5%) and 5 (12.5%) had scores 1+, 2+ and 3+, respectively.Conclusion: No significant association was detected between gain of PIK3CA copy number and P110α or CD34 tissue expression.
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Authors
Shadi Hosseini
Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Farkhondeh Behjati
Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Maryam Rahimi
Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Nazanin Taheri
Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran