PMID- 30347648 OWN - NLM STAT- MEDLINE DCOM- 20190114 LR - 20190114 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 23 IP - 10 DP - 2018 Oct 19 TI - Unfractionated and Low Molecular Weight Heparin Reduce Platelet Induced Epithelial-Mesenchymal Transition in Pancreatic and Prostate Cancer Cells. LID - 10.3390/molecules23102690 [doi] LID - 2690 AB - The interaction with platelets is of crucial importance for tumor cells passing through hematogenous metastasis. Platelets protect cancer cells from immune surveillance and exhibit many other prometastatic effects. Notably, platelets can change the epithelial tumor phenotype, a process termed epithelial-mesenchymal transition (EMT), which confers stem cell-like properties onto tumor cells associated with an increased motility and drug resistance. The aim of the study is to investigate the impact of heparin on the platelet induced EMT program in pancreatic and prostate tumor cells. Platelet activation and interaction with cancer cells were determined by static adhesion assays. Applying ELISAs, the platelet release of EMT inducing mediators was quantified. EMT marker protein expression by tumor cells was explored by western blot and qPCR. Our data show that different tumor cell entities have different platelet binding capacities and also that a weak interaction is sufficient to change tumor cell phenotype. Additionally, unfractionated heparin (UFH) as well as low molecular weight heparin (LMWH) reduced tumor cell platelet interaction. Subsequently, attenuated platelet-derived mediator release resulted in reduced EMT marker protein and transcription factor expression by the cancer cells and decreased cell migration. These data suggest that heparin reduces platelet induced EMT program and prevents the formation of cancer cells with stem cell-like properties. This additional mechanism argues for the use of heparin in oncological applications. FAU - Ponert, Jan Moritz AU - Ponert JM AD - Department of Pharmacy, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany. moritz.ponert@uni-bonn.de. FAU - Gockel, Lukas Maria AU - Gockel LM AD - Department of Pharmacy, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany. Lukas.Gockel@uni-bonn.de. FAU - Henze, Svenja AU - Henze S AD - Department of Pharmacy, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany. svenja.henze@uni-bonn.de. FAU - Schlesinger, Martin AU - Schlesinger M AD - Department of Pharmacy, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany. martin.schlesinger@uni-bonn.de. LA - eng PT - Journal Article DEP - 20181019 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Heparin, Low-Molecular-Weight) SB - IM MH - Blood Platelets/*drug effects/metabolism MH - Cell Adhesion/drug effects MH - Cell Line, Tumor MH - Cell Movement/drug effects/genetics MH - Epithelial-Mesenchymal Transition/drug effects/genetics MH - Heparin, Low-Molecular-Weight/*pharmacology MH - Humans MH - Male MH - Pancreatic Neoplasms/blood/*drug therapy/pathology MH - Platelet Activation/drug effects MH - Prostatic Neoplasms/blood/*drug therapy/genetics/pathology PMC - PMC6222876 OTO - NOTNLM OT - EMT OT - cancer stem cells OT - enoxaparin OT - epithelial-mesenchymal transition OT - heparin OT - platelet OT - tumor COIS- The authors declare no conflict of interest. EDAT- 2018/10/24 06:00 MHDA- 2019/01/15 06:00 PMCR- 2018/10/19 CRDT- 2018/10/24 06:00 PHST- 2018/09/28 00:00 [received] PHST- 2018/10/12 00:00 [revised] PHST- 2018/10/18 00:00 [accepted] PHST- 2018/10/24 06:00 [entrez] PHST- 2018/10/24 06:00 [pubmed] PHST- 2019/01/15 06:00 [medline] PHST- 2018/10/19 00:00 [pmc-release] AID - molecules23102690 [pii] AID - molecules-23-02690 [pii] AID - 10.3390/molecules23102690 [doi] PST - epublish SO - Molecules. 2018 Oct 19;23(10):2690. doi: 10.3390/molecules23102690.