PMID- 28272428 OWN - NLM STAT- MEDLINE DCOM- 20181127 LR - 20190109 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 7 DP - 2017 Mar 8 TI - Secreted Ectodomain of SIGLEC-9 and MCP-1 Synergistically Improve Acute Liver Failure in Rats by Altering Macrophage Polarity. PG - 44043 LID - 10.1038/srep44043 [doi] LID - 44043 AB - Effective treatments for acute liver failure (ALF) are still lacking. We recently reported that a single intravenous administration of serum-free conditioned medium from stem cells derived from human exfoliated deciduous teeth (SHED-CM) into the D-galactosamine (D-Gal)-induced rat ALF model improves the liver injury. However, the specific factors in SHED-CM that are responsible for resolving ALF remain unclear. Here we found that depleting SHED-CM of two anti-inflammatory M2 macrophage inducers-monocyte chemoattractant protein-1 (MCP-1) and the secreted ectodomain of sialic acid-binding Ig-like lectin-9 (sSiglec-9)-abolished its ability to resolve rat ALF. Furthermore, treatment with MCP-1/sSiglec-9 alone dramatically improved the survival of ALF rats. This treatment induced anti-inflammatory M2, suppressed hepatocyte apoptosis, and promoted hepatocyte proliferation. Treatment with an M2-depletion reagent (mannosylated clodronate liposomes) suppressed the recovery. In addition, MCP-1 and sSiglec-9 synergistically promoted the M2 differentiation of bone marrow-derived macrophages via CCR2, accompanied by the production of multiple liver-regenerating factors. The conditioned medium from MCP-1/sSiglec-9-activated M2 macrophages, but not from interleukin-4-induced ones, suppressed the D-Gal- and LPS-induced apoptosis of primary hepatocytes and promoted their proliferation in vitro. The unique combination of MCP-1/sSiglec-9 ameliorates rat ALF by inhibiting hepatocellular apoptosis and promoting liver regeneration through the induction of anti-inflammatory/tissue-repairing M2 macrophages. FAU - Ito, Takanori AU - Ito T AD - Department of Gastroenterology and Hepatology, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Ishigami, Masatoshi AU - Ishigami M AD - Department of Gastroenterology and Hepatology, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Matsushita, Yoshihiro AU - Matsushita Y AD - Department of Oral and Maxillofacial Surgery of Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Hirata, Marina AU - Hirata M AD - Department of Oral and Maxillofacial Surgery of Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Matsubara, Kohki AU - Matsubara K AD - Department of Oral and Maxillofacial Surgery of Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Ishikawa, Tetsuya AU - Ishikawa T AD - Department of Gastroenterology and Hepatology, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Hibi, Hideharu AU - Hibi H AD - Department of Oral and Maxillofacial Surgery of Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Ueda, Minoru AU - Ueda M AD - Department of Oral and Maxillofacial Surgery of Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Hirooka, Yoshiki AU - Hirooka Y AD - Department of Gastroenterology and Hepatology, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Goto, Hidemi AU - Goto H AD - Department of Gastroenterology and Hepatology, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Yamamoto, Akihito AU - Yamamoto A AD - Department of Oral and Maxillofacial Surgery of Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. AD - Department of Oral histology, Institute of Biomedical Science, Tokushima University Graduate School, 3-18-5 Kuramoto-cho, Tokushima 770-8504, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170308 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Culture Media, Serum-Free) RN - 0 (Sialic Acid Binding Immunoglobulin-like Lectins) RN - 0 (Siglec-9 protein, rat) SB - IM MH - Animals MH - Apoptosis MH - Cell Proliferation MH - Chemokine CCL2/*metabolism MH - Culture Media, Serum-Free MH - Female MH - Inflammation/complications/metabolism MH - Liver Failure, Acute/complications/*metabolism MH - Macrophages/*metabolism MH - Rats, Sprague-Dawley MH - Sialic Acid Binding Immunoglobulin-like Lectins/*metabolism MH - Stem Cells/physiology MH - Tooth Exfoliation MH - Tooth, Deciduous/cytology PMC - PMC5358744 COIS- The authors declare no competing financial interests. EDAT- 2017/03/09 06:00 MHDA- 2018/11/28 06:00 PMCR- 2017/03/08 CRDT- 2017/03/09 06:00 PHST- 2016/09/28 00:00 [received] PHST- 2017/02/01 00:00 [accepted] PHST- 2017/03/09 06:00 [entrez] PHST- 2017/03/09 06:00 [pubmed] PHST- 2018/11/28 06:00 [medline] PHST- 2017/03/08 00:00 [pmc-release] AID - srep44043 [pii] AID - 10.1038/srep44043 [doi] PST - epublish SO - Sci Rep. 2017 Mar 8;7:44043. doi: 10.1038/srep44043.