PMID- 28938552 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20170925 LR - 20181113 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 8 IP - 35 DP - 2017 Aug 29 TI - Novel pleiotropic effects of bioactive phospholipids in human lung cancer metastasis. PG - 58247-58263 LID - 10.18632/oncotarget.17461 [doi] AB - We previously proposed that one of the unwanted side effects of chemotherapy and radiotherapy is the increase in several peptide- and non-peptide based chemoattractants in damaged tissues, leading to induction of a prometastatic microenvironment for remaining cancer cells. Herein, we turned out our attention to a potential role of bioactive phospholipids (BphsLs), such as sphingosine-1-phosphate (S1P), ceramide-1-phosphate (C1P), lysophosphatidylcholine (LPC), and lysophosphatidic acid (LPA) in lung cancer (LC) metastasis. We report that LC cells express several functional BphL receptors (for S1P, LPC, and LPA) as well as several enzymes involved in their metabolism and that BphsLs are potent chemokinetic and adhesion factors for these cells. We also demonstrate for the first time the novel role of C1P as a prometastatic factor in LC cells. In addition to their chemokinetic activities, BphsLs also sensitize or prime the chemotactic responsiveness of LC cells to known prometastatic factors such as hepatocyte growth factor/scatter factor (HGF/SF). Thus, for the first time we demonstrate a prometastatic effect that is based on the priming of a cell's responsiveness to chemotactic factors by chemokinetic factors. To our surprise, none of the bioactive lipids induced proliferation of LC cells or ameliorated toxic effects of vincristine treatment. Interestingly, BphsLs increase adhesion of LC cells to bone marrow-derived stromal cells and stimulate these cells to release ExNs, which additionally increase LC cell motility. In conclusion, our results show that BphsLs are important modulators of prometastatic environment. Therefore, their inhibitors could be considered as potential anti-metastatic drug candidates to be included as a part of post radio- and/or chemo- therapy treatment. FAU - Schneider, Gabriela AU - Schneider G AD - Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA. FAU - Sellers, Zachariah Payne AU - Sellers ZP AD - Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA. FAU - Bujko, Kamila AU - Bujko K AD - Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA. FAU - Kakar, Sham S AU - Kakar SS AD - Department of Physiology and James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA. FAU - Kucia, Magda AU - Kucia M AD - Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA. AD - Department of Regenerative Medicine, Medical University of Warsaw, Warsaw, Poland. FAU - Ratajczak, Mariusz Z AU - Ratajczak MZ AD - Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA. AD - Department of Regenerative Medicine, Medical University of Warsaw, Warsaw, Poland. LA - eng PT - Journal Article DEP - 20170427 PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 PMC - PMC5601648 OTO - NOTNLM OT - HGF/SF OT - bioactive phospholipids OT - lung cancer OT - metastasis OT - priming COIS- CONFLICTS OF INTEREST Authors declare no conflicts of interest EDAT- 2017/09/25 06:00 MHDA- 2017/09/25 06:01 PMCR- 2017/08/29 CRDT- 2017/09/24 06:00 PHST- 2017/03/03 00:00 [received] PHST- 2017/04/15 00:00 [accepted] PHST- 2017/09/24 06:00 [entrez] PHST- 2017/09/25 06:00 [pubmed] PHST- 2017/09/25 06:01 [medline] PHST- 2017/08/29 00:00 [pmc-release] AID - 17461 [pii] AID - 10.18632/oncotarget.17461 [doi] PST - epublish SO - Oncotarget. 2017 Apr 27;8(35):58247-58263. doi: 10.18632/oncotarget.17461. eCollection 2017 Aug 29.