| Title | HPIP is upregulated in colorectal cancer and regulates colorectal cancer cell proliferation, apoptosis and invasion |
| Authors | Feng, Yingying Xu, Xiaojie Zhang, Yunjing Ding, Jianhua Wang, Yonggang Zhang, Xiaopeng Wu, Zhe Kang, Lei Liang, Yingchun Zhou, LiYing Song, Santai Zhao, Ke Ye, Qinong |
| Affiliation | Acad Mil Med Sci, Affiliated Hosp, Beijing, Peoples R China. Beijing Inst Biotechnol, Dept Med Mol Biol, Beijing, Peoples R China. Second Artillery Gen Hosp, Dept Colorectal Surg, Beijing, Peoples R China. Second Artillery Gen Hosp, Dept Tradit Chinese Med, Beijing, Peoples R China. Beijing Inst Biotechnol, Lab Vaccine & Antibody Engn, Beijing, Peoples R China. Peking Univ, Hosp 1, Dept Nucl Med, Beijing 100034, Peoples R China. |
| Keywords | HOMEOBOX INTERACTING PROTEIN-1 MESENCHYMAL TRANSITION GROWTH RECEPTOR PATHWAY ACTIVATION EXPRESSION THERAPY NETWORK ARREST |
| Issue Date | 2015 |
| Publisher | scientific reports |
| Citation | SCIENTIFIC REPORTS.2015,5. |
| Abstract | Hematopoietic pre-B cell leukemia transcription factor (PBX)-interacting protein (HPIP) was shown to play a role in cancer development and progression. However, the role of HPIP in colorectal cancer (CRC) is unknown. Here, we report that HPIP is over expressed in most of CRC patients and predicts poor clinical outcome in CRC. HPIP promotes CRC cell proliferation via activation of G1/S and G2/M checkpoint transitions, concomitant with a marked increase of the positive cell cycle regulators, including cyclin D1, cyclin A, and cyclin B1. HPIP inhibits CRC cell apoptosis accompanied by the decreased levels of BAX and PIG3, the inducers of apoptosis, and the increased level of the apoptosis inhibitor BCL2. HPIP blocks caspase-3-mediated cleavage of PARP, an important apoptosis marker. HPIP promotes CRC cell migration and invasion, and regulates epithelial-mesenchymal transition (EMT), which plays a critical role in cancer cell migration and invasion. Activation of MAPK/ERK1/2 and PI3k/AKT pathways is required for HPIP modulation of CRC cell proliferation, migration and EMT. Moreover, HPIP knockdown suppresses colorectal tumor growth in nude mice. These data highlight the important role of HPIP in CRC cell proliferation and progression and suggest that HPIP may be a useful target for CRC therapy. |
| URI | http://hdl.handle.net/20.500.11897/341375 |
| ISSN | 2045-2322 |
| DOI | 10.1038/srep09429 |
| Indexed | SCI(E) PubMed |
| Appears in Collections: | 第一医院 |
