Breast cancer-overexpressed gene 1 protein (KIAA0100) is a glucoprotein composed of 2,235 amino acids. KIAA0100 has four isforms (254kDa,250kDa,45kDa,25kDa).KIAA0100 is expressed in pancreas, placenta and up-regulated in breast carcinoma epithelial cells. This gene was initially characterized in human as having high expression levels in breast carcinomas and breast cancer cell lines. This gene also has increased expression in prostrate cancer cells relative to normal prostrate tissues. Expression of this gene is negatively regulated by direct binding of the microRNA miR-195 to its 3' UTR. miR-195 has been shown to modulate the invasiveness of prostrate cancer cells and xenograft metastases by downgrading expression of this gene. In mouse, the protein encoded by this gene was identified as an antigen on acute monocytic leukemia cells. In human, alternative splicing results in multiple transcript variants encoding distinct isoforms; some of these isoforms are predicted to contain an RNA pol II promoter FMP27 protein domain and a Golgi-body-localization APT1 domain.
2. "Serological identification of immunogenic antigens in acute monocytic leukemia."Chen G., Zhang W.G., Cao X.M., Li F.Y., Liu X.P., Yao L.B.Leuk. Res. 29:503-509(2005)
Sequence Similarity
Belongs to the SABRE family.
Tissue Specificity
Expressed in pancreas, placenta and up-regulated in breast carcinoma epithelial cells, ductal in situ carcinoma (DCIS), invasive breast carcinoma (IBC) and metastatic breast carcinoma cells (MET).
Immunofluorescent staining of Hela cells using anti-KIAA0100 Mouse mAb (Cat. # M1210-6).
Immunohistochemical analysis of paraffin-embedded human breast cancer tissue with Mouse anti-KIAA0100 antibody (M1210-6) at 1/2,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (M1210-6) at 1/2,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded human kidney tissue with Mouse anti-KIAA0100 antibody (M1210-6) at 1/2,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (M1210-6) at 1/2,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Immunohistochemical analysis of paraffin-embedded human pancreas tissue with Mouse anti-KIAA0100 antibody (M1210-6) at 1/2,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (M1210-6) at 1/2,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
Western blot analysis of KIAA0100 on different lysates with Mouse anti-KIAA0100 antibody (M1210-6) at 1/1,000 dilution.
Lane 1: MDA-MB-231(Human triple-negative breast cancer cells) cell lysate Lane 2: SK-Br-3(Human breast cancer cells) cell lysate Lane 3: MCF7 (Human breast cancer cell) cell lysate Lane 4: HeLa (Human cervical adenocarcinoma cell) cell lysate Lane 5: A431 (human epidermal carcinoma cells) cell lysate Lane 6: PC-3M(Human prostate cancer cells) cell lysate Lane 7: LNCaP (Human prostate cancer cells) cell lysate
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: M1210-6, 1/1,000 in 5% NFDM/TBST, overnight at 4 ℃ Secondary antibody: Goat anti-Mouse IgG-HRP (HA1006), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 253.7 kDa Observed band size: 40-50,254 kDa
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