PMID- 14531907 OWN - NLM STAT- MEDLINE DCOM- 20031107 LR - 20190705 IS - 0007-1048 (Print) IS - 0007-1048 (Linking) VI - 123 IP - 2 DP - 2003 Oct TI - Enhanced production of osteopontin in multiple myeloma: clinical and pathogenic implications. PG - 263-70 AB - In this study, we examined osteopontin (OPN) production in myeloma cells and plasma OPN levels in multiple myeloma (MM) patients. We assessed OPN production in bone marrow cells (BMCs) by immunocytochemistry and enzyme-linked immunosorbent assay (ELISA). We also assessed OPN production in various B-cell malignant cell lines, including three myeloma cell lines by reverse transcription polymerase chain reaction (RT-PCR) and Western blotting. In addition, we measured plasma OPN concentrations by ELISA in 30 MM patients, 21 monoclonal gammopathy of undetermined significance (MGUS) patients and 30 healthy volunteers. As a result, in an immunocytochemical study, abundant OPN was detected in BMCs from overt MM patients, whereas no OPN was detected in BMCs from patients with other haematological diseases, including MGUS. Cultured BMCs from overt MM patients produced more OPN than those from patients with either smouldering MM or MGUS. Myeloma cell lines spontaneously produced OPN. Plasma OPN levels of MM patients were significantly higher than those of MGUS patients and healthy volunteers (P < 0.05). Moreover, they correlated with both progression and bone destruction of the disease (P < 0.05). These suggest that myeloma cells actively produce OPN, which possibly contributes to osteoclastic bone resorption in MM. Plasma OPN levels may be a useful biomarker for assessing bone destruction in MM and distinguishing MM from MGUS or smouldering MM. FAU - Saeki, Yukihiko AU - Saeki Y AD - Department of Molecular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan. saekiy@omh.hosp.go.jp FAU - Mima, Toru AU - Mima T FAU - Ishii, Taeko AU - Ishii T FAU - Ogata, Atsushi AU - Ogata A FAU - Kobayashi, Hideyuki AU - Kobayashi H FAU - Ohshima, Shiro AU - Ohshima S FAU - Ishida, Tetsushi AU - Ishida T FAU - Tabunoki, Yuichiro AU - Tabunoki Y FAU - Kitayama, Hitoshi AU - Kitayama H FAU - Mizuki, Masao AU - Mizuki M FAU - Katada, Yoshinori AU - Katada Y FAU - Asaoku, Hideki AU - Asaoku H FAU - Kitano, Masayasu AU - Kitano M FAU - Nishimoto, Norihiro AU - Nishimoto N FAU - Yoshizaki, Kazuyuki AU - Yoshizaki K FAU - Maeda, Masahiro AU - Maeda M FAU - Kon, Shigeyuki AU - Kon S FAU - Kinoshita, Naokazu AU - Kinoshita N FAU - Uede, Toshimitsu AU - Uede T FAU - Kawase, Ichiro AU - Kawase I LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Br J Haematol JT - British journal of haematology JID - 0372544 RN - 0 (Biomarkers, Tumor) RN - 0 (Neoplasm Proteins) RN - 0 (SPP1 protein, human) RN - 0 (Sialoglycoproteins) RN - 106441-73-0 (Osteopontin) SB - IM MH - Biomarkers, Tumor/*biosynthesis/blood MH - Blotting, Western MH - Bone Marrow Cells/metabolism MH - Bone Resorption/blood/etiology MH - Diagnosis, Differential MH - Disease Progression MH - Enzyme-Linked Immunosorbent Assay MH - Humans MH - Multiple Myeloma/complications/diagnosis/*metabolism MH - Neoplasm Proteins/*biosynthesis/blood/physiology MH - Neoplasm Staging MH - Osteopontin MH - Paraproteinemias/blood/diagnosis MH - Reverse Transcriptase Polymerase Chain Reaction MH - Sialoglycoproteins/*biosynthesis/blood/physiology MH - Tumor Cells, Cultured EDAT- 2003/10/09 05:00 MHDA- 2003/11/08 05:00 CRDT- 2003/10/09 05:00 PHST- 2003/10/09 05:00 [pubmed] PHST- 2003/11/08 05:00 [medline] PHST- 2003/10/09 05:00 [entrez] AID - 4589 [pii] AID - 10.1046/j.1365-2141.2003.04589.x [doi] PST - ppublish SO - Br J Haematol. 2003 Oct;123(2):263-70. doi: 10.1046/j.1365-2141.2003.04589.x.