title: Progranulin-derived Atsttrin directly binds to TNFRSF25 (DR3) and inhibits TNF-like ligand 1A (TL1A) activity.
abstract: Atsttrin, a progranulin (PGRN)-derived molecule composed of three TNFR-binding domains of PGRN, binds to TNF receptors (TNFR) and is therapeutic against inflammatory arthritis. Here we screened the associations of Atsttrin and other members in TNFR subfamily, which led to the discovery of TNFRSF25 (DR3) as an additional Atsttrin-interacting member in TNFR family. Similar to TNFR1 and TNFR2, DR3 also directly bound to Atsttrin. The first three cysteine-rich domains (CRD) in the extracellular portion of DR3 were required for this interaction. Atsttrin inhibited the interaction between DR3 and its TNF-Like Ligand 1A (TL1A). In addition, Atsttrin inhibited TL1A-stimulated target gene expressions and neutralized TL1A-enhanced osteoclastogenesis in vitro. Furthermore, Atsttrin ameliorated the pathology in dextran sulfate sodium induced colitis. Taken together, these findings not only provide the new insights into Atsttrin's therapeutic action in inflammatory arthritis, but may also present Atsttrin as a novel biological agent for treating various types of diseases associated with TL1A/DR3 pathway.
authors.affiliation: Department of Pediatric Surgery, Qilu Hospital of Shandong University, Jinan, China.
authors.forename: Cui
authors.initials: C
authors.lastname: Liu
authors.affiliation: Department of Pediatric Surgery, Qilu Hospital of Shandong University, Jinan, China.
authors.forename: Xing-Xia
authors.initials: XX
authors.lastname: Li
authors.affiliation: Department of Nursing, Qilu Hospital of Shandong University, Jinan, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Gao
authors.affiliation: Department of Biotechnology, Taishan Medical University, Taian, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Liu
authors.affiliation: Department of Traditional Chinese Medicine, Qilu Hospital of Shandong University, Jinan, China.
authors.forename: De-Shan
authors.initials: DS
authors.lastname: Liu
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects; D002460:Cell Line; D003092:Colitis / Q000139:chemically induced / Q000378:metabolism / Q000473:pathology; D003545:Cysteine / Q000737:chemistry; D016264:Dextran Sulfate / Q000009:adverse effects; D004195:Disease Models, Animal; D004305:Dose-Response Relationship, Drug; D006470:Hemorrhage / Q000517:prevention & control; D008264:Macrophages / Q000378:metabolism; D051379:Mice; D005810:Multigene Family; D011485:Protein Binding / Q000187:drug effects; D054730:Protein Interaction Domains and Motifs; D018124:Receptors, Tumor Necrosis Factor / Q000235:genetics / Q000378:metabolism; D053219:Receptors, Tumor Necrosis Factor, Member 25 / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D011993:Recombinant Fusion Proteins / Q000378:metabolism* / Q000494:pharmacology*; D053380:Tumor Necrosis Factor Ligand Superfamily Member 15 / Q000037:antagonists & inhibitors* / Q000378:metabolism
chemical_list: C557987:Atsttrin fusion protein; D018124:Receptors, Tumor Necrosis Factor; D053219:Receptors, Tumor Necrosis Factor, Member 25; D011993:Recombinant Fusion Proteins; D053380:Tumor Necrosis Factor Ligand Superfamily Member 15; D016264:Dextran Sulfate; D003545:Cysteine