Clinical role of MiRNA 29a and MiRNA 335 on breast cancer management: their relevance to MMP2 protein level

Abstract

Background

Circulating miRNAs are novel biomarkers, authors aimed to investigate the expression level of miR-29a and miR-335 and their relevance to CEA, CA15.3, and matrix metalloproteinase-2 (MMP2).

Materials and methods

Breast cancer (BC) patients (n = 44), benign breast lesion patients (n = 25), and healthy individuals (n = 19) were enrolled for detection of miRNA expression levels, MMP2 and biochemical markers using quantitative polymerase chain reaction (PCR) and ELISA, respectively.

Results

Expression of miR-29a and miR-335 were significantly decreased in breast patients as compared to healthy individuals, while biochemical markers were high in BC patients as compared to the other two groups. The diagnostic efficacy for miR-29a, miR-335, and MMP2 were superior to both CEA and CA 15.3 for early detection of BC patients.

Conclusions

Detection of the miR-29a and miR335 expression levels in serum samples are significant promising biomarkers for BC diagnosis.

Keywords:

• Breast cancer
• miRNAs
• circulating molecular marker
• MMP2
• diagnosis

Disclosure statement

The authors confirmed that there is nothing to declare.

Additional information

Funding

This work was supported equally through a grant from Science Technology Development Fund (STDF) through Basic and Applied Research Support Grant Project (BARG) [No.15089], Egypt, and as part from PhD thesis submitted to Zoology Department, Faculty of Science (Girls), Al-Azhar University, Egypt. The instruments listed in this study were purchased through a grant from Science Technology Development Fund (STDF) through Capacity Building Grant Project (CBG) [No. 4940].