{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T06:28:42Z","timestamp":1789972122460,"version":"4.0.1"},"reference-count":34,"publisher":"American Society of Hematology","issue":"4","content-domain":{"domain":["ashpublications.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2019,2,26]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Multiple myeloma (MM) is a hematological malignancy that grows in multiple sites of the axial skeleton and causes debilitating osteolytic disease. Interleukin-34 (IL-34) is a newly discovered cytokine that acts as a ligand of colony-stimulating factor-1 (CSF-1) receptor and can replace CSF-1 for osteoclast differentiation. In this study, we identify IL-34 as an osteoclastogenic cytokine that accelerates osteolytic disease in MM. IL-34 was found to be expressed in the murine MM cell line MOPC315.BM, and the expression of IL-34 was enhanced by stimulation with proinflammatory cytokines or by bone marrow (BM) stromal cells. MM-cell\u2013derived IL-34 promoted osteoclast formation from mouse BM cells in vitro. Targeting Il34 by specific small interfering RNA impaired osteoclast formation in vitro and attenuated osteolytic disease in vivo. In BM aspirates from MM patients, the expression levels of IL-34 in CD138+ populations vary among patients from high to weak to absent. MM cell\u2013derived IL-34 promoted osteoclast formation from human CD14+ monocytes, which was reduced by a neutralizing antibody against IL-34. Taken together, this study describes for the first time the expression of IL-34 in MM cells, indicating that it may enhance osteolysis and suggesting IL-34 as a potential therapeutic target to control pathological osteoclastogenesis in MM patients.<\/jats:p>","DOI":"10.1182\/bloodadvances.2018020008","type":"journal-article","created":{"date-parts":[[2019,2,19]],"date-time":"2019-02-19T21:40:14Z","timestamp":1550612414000},"page":"541-551","update-policy":"https:\/\/doi.org\/10.1182\/blood.2019cm0000","source":"Crossref","is-referenced-by-count":30,"title":["A role for IL-34 in osteolytic disease of multiple myeloma"],"prefix":"10.1182","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2347-8889","authenticated-orcid":false,"given":"Muhammad","family":"Baghdadi","sequence":"first","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kozo","family":"Ishikawa","sequence":"additional","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sayaka","family":"Nakanishi","sequence":"additional","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomoki","family":"Murata","sequence":"additional","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yui","family":"Umeyama","sequence":"additional","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takuto","family":"Kobayashi","sequence":"additional","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yosuke","family":"Kameda","sequence":"additional","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiraku","family":"Endo","sequence":"additional","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haruka","family":"Wada","sequence":"additional","affiliation":[{"name":"Division of Immunobiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bjarne","family":"Bogen","sequence":"additional","affiliation":[{"name":"K. 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