Suppression of mouse miRNA-222-3p in response to Echinococcus multilocularis infection. 2018

Yadong Zheng
State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China. Electronic address: zhengyadong@caas.cn.

During Echinococcus multilocularis infection, serum miR-222-3p is dramatically downregulated, but its role is yet to be established. Here the expression of miR-222-3p in the spleen of infected mice was shown to be significantly decreased in response to parasite infection (p < 0.05). Using RAW264.7 macrophages, it was further demonstrated that E. multilocularis crude antigens significantly inhibited miR-222-3p expression (p < 0.01). In macrophages transfected with a miR-222-3p inhibitor, NO secretion was moderately decreased compared with the control (p < 0.05). Although all the pro- and anti-inflammatory cytokine genes tested kept constant in expression, four key genes involved in the LPS/TLR4 signaling pathway were significantly down- or up-regulated in transfected cells (p < 0.05), including CD14, TLR4, TICAM2 and AP-1. These results suggest that downregulated miR-222-3p is capable of modulating macrophage immune functions, possibly contributing to the pathogenesis during E. multilocularis infection.

UI MeSH Term Description Entries
D008264 Macrophages The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.) Bone Marrow-Derived Macrophages,Monocyte-Derived Macrophages,Macrophage,Macrophages, Monocyte-Derived,Bone Marrow Derived Macrophages,Bone Marrow-Derived Macrophage,Macrophage, Bone Marrow-Derived,Macrophage, Monocyte-Derived,Macrophages, Bone Marrow-Derived,Macrophages, Monocyte Derived,Monocyte Derived Macrophages,Monocyte-Derived Macrophage
D008807 Mice, Inbred BALB C An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse
D004443 Echinococcosis An infection caused by the infestation of the larval form of tapeworms of the genus Echinococcus. The liver, lungs, and kidney are the most common areas of infestation. Cystic Echinococcosis,Cysts, Hydatid,Hydatid Cyst,Hydatidosis,Echinococcus Granulosus Infection,Echinococcus Infection,Hydatid Disease,Cyst, Hydatid,Cystic Echinococcoses,Echinococcoses,Echinococcoses, Cystic,Echinococcosis, Cystic,Echinococcus Granulosus Infections,Echinococcus Infections,Granulosus Infection, Echinococcus,Granulosus Infections, Echinococcus,Hydatid Cysts,Hydatid Diseases,Hydatidoses,Infection, Echinococcus,Infection, Echinococcus Granulosus,Infections, Echinococcus Granulosus
D000067996 RAW 264.7 Cells A transformed macrophage cell line isolated from ASCITES of mice infected with ABELSON MURINE LEUKEMIA VIRUS. RAW 264.7 Cell Line,264.7 Cell, RAW,264.7 Cells, RAW,Cell, RAW 264.7,Cells, RAW 264.7,RAW 264.7 Cell
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D048210 Echinococcus multilocularis A north temperate species of tapeworm (CESTODA) whose adult form infects FOXES and wild RODENTS. The larval form can infect humans producing HEPATIC HYDATID CYSTS. Echinococcus multiloculari,multilocularis, Echinococcus
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D035683 MicroRNAs Small double-stranded, non-protein coding RNAs, 21-25 nucleotides in length generated from single-stranded microRNA gene transcripts by the same RIBONUCLEASE III, Dicer, that produces small interfering RNAs (RNA, SMALL INTERFERING). They become part of the RNA-INDUCED SILENCING COMPLEX and repress the translation (TRANSLATION, GENETIC) of target RNA by binding to homologous 3'UTR region as an imperfect match. The small temporal RNAs (stRNAs), let-7 and lin-4, from C. elegans, are the first 2 miRNAs discovered, and are from a class of miRNAs involved in developmental timing. RNA, Small Temporal,Small Temporal RNA,miRNA,stRNA,Micro RNA,MicroRNA,Primary MicroRNA,Primary miRNA,miRNAs,pre-miRNA,pri-miRNA,MicroRNA, Primary,RNA, Micro,Temporal RNA, Small,miRNA, Primary,pre miRNA,pri miRNA

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