PMID- 37518985 OWN - NLM STAT- MEDLINE DCOM- 20231006 LR - 20231013 IS - 1878-0261 (Electronic) IS - 1574-7891 (Print) IS - 1574-7891 (Linking) VI - 17 IP - 10 DP - 2023 Oct TI - Promyelocytic leukemia protein regulates angiogenesis and epithelial-mesenchymal transition to limit metastasis in MDA-MB-231 breast cancer cells. PG - 2090-2108 LID - 10.1002/1878-0261.13501 [doi] AB - Promyelocytic leukemia protein (PML) modulates diverse cell functions that contribute to both tumor suppressor and pro-oncogenic effects, depending on the cellular context. We show here that PML knockdown (KD) in MDA-MB-231, but not MCF7, breast cancer cells, prolonged stem-cell-like survival, and increased cell proliferation and migration, which is in line with gene-enrichment results from their RNA sequencing analysis. Of note, increased migration was accompanied by higher levels of the epithelial-mesenchymal transition (EMT) regulator Twist-related protein 2 (TWIST2). We showed here that PML binds to TWIST2 via its basic helix-loop-helix (bHLH) region and functionally interferes with the suppression of the epithelial target of TWIST2, CD24. In addition, PML ablation in MDA-MB-231 cells led to higher protein levels of hypoxia-inducible factor 1-alpha (HIF1a), resulting in a higher cell hypoxic response. Functionally, PML directly suppressed the induction of the HIF1a target gene vascular endothelial growth factor A (VEGFa). In line with these results, tumor xenografts of MDA-MB-231 PML-KD cells had enhanced aggressive properties, including higher microvessel density, faster local growth, and higher metastatic ability, with a preference for lung. Collectively, PML suppresses the cancer aggressive behavior by multiple mechanisms that impede both the HIF-hypoxia-angiogenic and EMT pathways. CI - (c) 2023 The Authors. Molecular Oncology published by John Wiley & Sons Ltd on behalf of Federation of European Biochemical Societies. FAU - Vogiatzoglou, Amalia P AU - Vogiatzoglou AP AUID- ORCID: 0000-0002-6187-1075 AD - Institute of Molecular Biology and Biotechnology (IMBB), Foundation for Research and Technology-Hellas (FORTH), Crete, Greece. AD - Department of Biology, University of Crete, Heraklion, Greece. FAU - Spanou, Syrago AU - Spanou S AD - Institute of Molecular Biology and Biotechnology (IMBB), Foundation for Research and Technology-Hellas (FORTH), Crete, Greece. AD - Department of Biology, University of Crete, Heraklion, Greece. FAU - Sachini, Nikoleta AU - Sachini N AD - Institute of Molecular Biology and Biotechnology (IMBB), Foundation for Research and Technology-Hellas (FORTH), Crete, Greece. AD - Department of Biology, University of Crete, Heraklion, Greece. AD - ADC Therapeutics Limited, London, UK. FAU - Drakos, Elias AU - Drakos E AD - Department of Pathology, Medical School, University of Crete, Greece. FAU - Nikolaou, Christoforos AU - Nikolaou C AD - Biomedical Sciences Research Center "Alexander Fleming", Institute for Bioinnovation, Vari, Greece. FAU - Makatounakis, Takis AU - Makatounakis T AD - Institute of Molecular Biology and Biotechnology (IMBB), Foundation for Research and Technology-Hellas (FORTH), Crete, Greece. FAU - Kretsovali, Androniki AU - Kretsovali A AUID- ORCID: 0000-0003-2949-1619 AD - Institute of Molecular Biology and Biotechnology (IMBB), Foundation for Research and Technology-Hellas (FORTH), Crete, Greece. FAU - Papamatheakis, Joseph AU - Papamatheakis J AUID- ORCID: 0000-0003-4553-2601 AD - Institute of Molecular Biology and Biotechnology (IMBB), Foundation for Research and Technology-Hellas (FORTH), Crete, Greece. AD - Department of Biology, University of Crete, Heraklion, Greece. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230904 PL - United States TA - Mol Oncol JT - Molecular oncology JID - 101308230 RN - 0 (Promyelocytic Leukemia Protein) RN - 0 (Vascular Endothelial Growth Factor A) RN - 0 (Transcription Factors) SB - IM MH - Humans MH - Female MH - *Breast Neoplasms/pathology MH - Promyelocytic Leukemia Protein/genetics MH - Vascular Endothelial Growth Factor A MH - Cell Line, Tumor MH - Epithelial-Mesenchymal Transition/genetics MH - Transcription Factors/genetics MH - Cell Movement PMC - PMC10552902 OTO - NOTNLM OT - EMT OT - PML OT - angiogenesis OT - breast cancer OT - metastasis OT - transcriptomics COIS- The authors declare no conflict of interest. EDAT- 2023/07/31 06:42 MHDA- 2023/10/06 06:43 PMCR- 2023/09/04 CRDT- 2023/07/31 01:23 PHST- 2023/06/05 00:00 [revised] PHST- 2023/03/02 00:00 [received] PHST- 2023/07/28 00:00 [accepted] PHST- 2023/10/06 06:43 [medline] PHST- 2023/07/31 06:42 [pubmed] PHST- 2023/07/31 01:23 [entrez] PHST- 2023/09/04 00:00 [pmc-release] AID - MOL213501 [pii] AID - 10.1002/1878-0261.13501 [doi] PST - ppublish SO - Mol Oncol. 2023 Oct;17(10):2090-2108. doi: 10.1002/1878-0261.13501. Epub 2023 Sep 4.