PMID- 28274095 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200929 IS - 1976-9148 (Print) IS - 2005-4483 (Electronic) IS - 1976-9148 (Linking) VI - 25 IP - 6 DP - 2017 Nov 1 TI - Sphingosylphosphorylcholine Induces Thrombospondin-1 Secretion in MCF10A Cells via ERK2. PG - 625-633 LID - 10.4062/biomolther.2016.228 [doi] AB - Sphingosylphosphorylcholine (SPC) is one of the bioactive phospholipids that has many cellular functions such as cell migration, adhesion, proliferation, angiogenesis, and Ca(2)(+) signaling. Recent studies have reported that SPC induces invasion of breast cancer cells via matrix metalloproteinase-3 (MMP-3) secretion leading to WNT activation. Thrombospondin-1 (TSP-1) is a matricellular and calcium-binding protein that binds to a wide variety of integrin and non-integrin cell surface receptors. It regulates cell proliferation, migration, and apoptosis in inflammation, angiogenesis and neoplasia. TSP-1 promotes aggressive phenotype via epithelial mesenchymal transition (EMT). The relationship between SPC and TSP-1 is unclear. We found SPC induced EMT leading to mesenchymal morphology, decrease of E-cadherin expression and increases of N-cadherin and vimentin. SPC induced secretion of thrombospondin-1 (TSP-1) during SPC-induced EMT of various breast cancer cells. Gene silencing of TSP-1 suppressed SPC-induced EMT as well as migration and invasion of MCF10A cells. An extracellular signal-regulated kinase inhibitor, PD98059, significantly suppressed the secretion of TSP-1, expressions of N-cadherin and vimentin, and decrease of E-cadherin in MCF10A cells. ERK2 siRNA suppressed TSP-1 secretion and EMT. From online PROGgene V2, relapse free survival is low in patients having high TSP-1 expressed breast cancer. Taken together, we found that SPC induced EMT and TSP-1 secretion via ERK2 signaling pathway. These results suggests that SPC-induced TSP-1 might be a new target for suppression of metastasis of breast cancer cells. FAU - Kang, June Hee AU - Kang JH AD - College of Pharmacy, Dongguk University, Seoul 10326, Republic of Korea. FAU - Kim, Hyun Ji AU - Kim HJ AD - College of Pharmacy, Dongguk University, Seoul 10326, Republic of Korea. FAU - Park, Mi Kyung AU - Park MK AD - College of Pharmacy, Dongguk University, Seoul 10326, Republic of Korea. AD - National Cancer Center, Goyang, 10408, Republic of Korea. FAU - Lee, Chang Hoon AU - Lee CH AD - College of Pharmacy, Dongguk University, Seoul 10326, Republic of Korea. LA - eng PT - Journal Article PL - Korea (South) TA - Biomol Ther (Seoul) JT - Biomolecules & therapeutics JID - 101472832 PMC - PMC5685432 OTO - NOTNLM OT - ERK2 OT - Epithelial mesenchymal transition OT - Sphingosylphosphorylcholine OT - Thrombospondin-1 EDAT- 2017/03/10 06:00 MHDA- 2017/03/10 06:01 PMCR- 2017/11/01 CRDT- 2017/03/10 06:00 PHST- 2016/10/11 00:00 [received] PHST- 2016/12/11 00:00 [revised] PHST- 2017/01/09 00:00 [accepted] PHST- 2017/03/10 06:00 [pubmed] PHST- 2017/03/10 06:01 [medline] PHST- 2017/03/10 06:00 [entrez] PHST- 2017/11/01 00:00 [pmc-release] AID - biomolther.2016.228 [pii] AID - bt-25-625 [pii] AID - 10.4062/biomolther.2016.228 [doi] PST - ppublish SO - Biomol Ther (Seoul). 2017 Nov 1;25(6):625-633. doi: 10.4062/biomolther.2016.228.