PMID- 33923651 OWN - NLM STAT- MEDLINE DCOM- 20210524 LR - 20240401 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 26 IP - 8 DP - 2021 Apr 16 TI - Curcumin Inhibits Lysophosphatidic Acid Mediated MCP-1 Expression via Blocking ROCK Signalling. LID - 10.3390/molecules26082320 [doi] LID - 2320 AB - Curcumin is a natural compound that has been widely used as a food additive and medicine in Asian countries. Over several decades, diverse biological effects of curcumin have been elucidated, such as anti-inflammatory and anti-oxidative activities. Monocyte chemoattractant protein-1 (MCP-1) is a key inflammatory marker during the development of atherosclerosis, and curcumin blocks MCP-1 expression stimulated by various ligands. Hence, we studied the action of curcumin on lysophosphatidic acid (LPA) mediated MCP-1 expression and explored the specific underlying mechanisms. In human vascular smooth muscle cells, LPA induces Rho-associated protein kinase (ROCK) dependent transforming growth factor receptor (TGFBR1) transactivation, leading to glycosaminoglycan chain elongation. We found that LPA also signals via the TGFBR1 transactivation pathway to regulate MCP-1 expression. Curcumin blocks LPA mediated TGFBR1 transactivation and subsequent MCP-1 expression by blocking the ROCK signalling. In the vasculature, ROCK signalling regulates smooth muscle cell contraction, inflammatory cell recruitment, endothelial dysfunction and vascular remodelling. Therefore, curcumin as a ROCK signalling inhibitor has the potential to prevent atherogenesis via multiple ways. FAU - Zhou, Ying AU - Zhou Y AD - School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, QLD 4102, Australia. FAU - Little, Peter J AU - Little PJ AUID- ORCID: 0000-0002-0335-3835 AD - School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, QLD 4102, Australia. AD - Department of Pharmacy, Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou 510520, China. AD - Sunshine Coast Health Institute, University of the Sunshine Coast, Birtinya, QLD 4575, Australia. FAU - Xu, Suowen AU - Xu S AUID- ORCID: 0000-0002-5488-5217 AD - Department of Endocrinology, First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230037, China. FAU - Kamato, Danielle AU - Kamato D AUID- ORCID: 0000-0002-1089-2829 AD - School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Woolloongabba, QLD 4102, Australia. AD - Department of Pharmacy, Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou 510520, China. LA - eng GR - 1160925/National Health and Medical Research Council/ GR - 1832825/University of Queensland/ PT - Journal Article DEP - 20210416 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Chemokine CCL2) RN - 0 (Lysophospholipids) RN - 0 (Receptors, Transforming Growth Factor beta) RN - EC 2.7.11.1 (rho-Associated Kinases) RN - IT942ZTH98 (Curcumin) RN - PG6M3969SG (lysophosphatidic acid) SB - IM MH - Animals MH - Blotting, Western MH - Cell Line MH - Cell Survival/drug effects MH - Chemokine CCL2/*metabolism MH - Curcumin/*pharmacology MH - Humans MH - Inflammation/metabolism MH - Lysophospholipids/*pharmacology MH - Muscle, Smooth, Vascular/drug effects/metabolism MH - Receptors, Transforming Growth Factor beta/metabolism MH - Signal Transduction/drug effects MH - rho-Associated Kinases/*metabolism PMC - PMC8073974 OTO - NOTNLM OT - Smad2 OT - atherosclerosis OT - inflammation OT - monocyte chemoattractant protein-1 OT - transforming growth factor receptor OT - vascular smooth muscle cells COIS- The authors declare no conflict of interest. EDAT- 2021/05/01 06:00 MHDA- 2021/05/25 06:00 PMCR- 2021/04/16 CRDT- 2021/04/30 01:25 PHST- 2021/03/22 00:00 [received] PHST- 2021/04/12 00:00 [revised] PHST- 2021/04/14 00:00 [accepted] PHST- 2021/04/30 01:25 [entrez] PHST- 2021/05/01 06:00 [pubmed] PHST- 2021/05/25 06:00 [medline] PHST- 2021/04/16 00:00 [pmc-release] AID - molecules26082320 [pii] AID - molecules-26-02320 [pii] AID - 10.3390/molecules26082320 [doi] PST - epublish SO - Molecules. 2021 Apr 16;26(8):2320. doi: 10.3390/molecules26082320.