Evaluation of Additional ABCC12 Gene Expression Character in Breast Cancer Samples Using Formal Diagnostic Profile

Abstract

Background: Breast cancer (BC) is one of the most common cancers among women and is the main cause of cancer-related mortalities in the female population. The main cause of BC is not fully understood yet; however, many genes have been identified as risk factors that increase susceptibility to this disease. Objectives: The aim of this study was to evaluate the expression of ABCC12 gene in patients with ductal breast carcinoma and its relationship with other biomarkers including estrogen receptor (ER), progesterone receptor (RP) and human epidermal growth factor receptor 2 (HER-2). Methods: This study included nine women diagnosed with ductal breast carcinoma as cases and five healthy women as controls. RNA extraction from breast tissue and cDNA synthesis were performed, and the expression of ABCC12 gene was evaluated using the real time polymerase chain reaction (PCR) method. After preparing formalin-fixed paraffin-embedded breast tissues, immunohistochemical evaluation of these samples and chromogenic in situ hybridization (CISH) of ER, PR and HER-2 were performed. Results: The obtained results showed that the expression of ABCC12 gene in all the breast cancer tissues was 3.74 times higher than in controls (P = 0.007). Also, the expression of ABCC12 gene increased by 3.94 times in luminal B (P = 0.002), 3.54 times in HER-2 (1+) (P = 0.0006), 3.86 times in ER (+) (P = 0.002) and 3.63 times in PR (+) (P = 0.0005). Conclusions: Our study showed that the evaluation of the ABCC12 gene expression as a one of multi-drug resistance protein members can be used as a prognostic factor to identify the stages of BC and its therapeutic approaches.

Apobec1 complementation factor overexpression promotes hepatic steatosis, fibrosis, and hepatocellular cancer

“…Of the 6 RNAs identified above, only E cadherin 1 (Cdh1) met the criteria for a gain-of-function/loss-of-function effect (ie upregulated in A1cf +/Tg and downregulated in age-matched A1cf -/liver ( Figure 13). Abcc12 mRNA was 5-fold upregulated in A1cf +/Tg liver, recapitulating findings showing increased expression in breast cancer (36) and loss of A1CF attenuated this increase in mRNA expression ( Figure 13). The remaining 4 RNAs (Spag5, Phlda2, Dmrta1, Irx1) were unchanged in WT and A1cf -/liver ( Figure 13 and Supplemental Figure 8).…”

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“…A1cf -/liver) ( Figure 13). Abcc12 mRNA was 5-fold upregulated in A1cf +/Tg liver, recapitulating findings showing increased expression in breast cancer (36), and loss of A1CF attenuated this increase in mRNA expression ( Figure 13). The remaining 4 RNAs (Spag5, Phlda2, Dmrta1, Irx1) were unchanged in WT and A1cf -/liver ( Figure 13 and Supplemental Figure 8).…”

RNA-Seq Reveals Different Gene Expression in Liver-Specific Prohibitin 1 Knock-Out Mice

“…• Is a member of the superfamily of ATP-binding cassette (ABC) transporters and the MRP subfamily which is involved in multi-drug resistance • In all the breast cancer tissues, the expression of ABCC12 gene 3.74 times higher than in controls (Esmaeili et al, 2018) Tubb2b…”