Determination of chitinases family during osteoclastogenesis

被引：48

作者：

Di Rosa, Michelino ^{[1
]}

Tibullo, Daniele ^{[2
]}

Vecchio, Michele ^{[4
]}

Nunnari, Giuseppe ^{[3
]}

Saccone, Salvatore ^{[5
]}

Di Raimondo, Francesco ^{[2
]}

Malaguarnera, Lucia ^{[1
]}

机构：

[1] Univ Catania, Dept Biomed Sci, I-95124 Catania, Italy

[2] Univ Catania, Osped Ferrarotto, Dept Clin & Mol Biomed, I-95124 Catania, Italy

[3] Univ Catania, Dept Clin & Mol Biomed, Div Infect Dis, I-95124 Catania, Italy

[4] Univ Catania, Hosp Policlin Vittorio Emanuele, Phys Med & Rehabil Unit, Catania, Italy

[5] Univ Catania, Dept Biol Geol & Environm Sci, I-95124 Catania, Italy

来源：

BONE | 2014年 / 61卷

关键词：

Osteoclasts; Chitinases; Chitinase-like-proteins (CLPs); Osteolysis; COLONIC EPITHELIAL-CELLS; NECROSIS-FACTOR-ALPHA; GAUCHER-DISEASE; MACROPHAGE ACTIVATION; CHIT-1; EXPRESSION; BONE-DISEASE; CHITOTRIOSIDASE; YKL-40; CARTILAGE; GAMMA;

D O I：

10.1016/j.bone.2014.01.005

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Mammalian chitinases consisting of CHIA, CHIT1, CHI3L1, CHI3L2 and CHID1 exert important biological roles in the monocyte lineage and chronic inflammatory diseases. Pathological bone resorption is a cause of significant morbidity in diseases affecting the skeleton such as rheumatoid arthritis, osteoporosis, periodontitis and cancer metastasis. The biologic role of chitinases in bone resorption is poorly understood. In this study, we evaluated the expression of the chitinases family during osteoclast differentiation. The expression of CHIA, CHI3L2 and CHID1 resulted unchanged during osteoclast differentiation, whereas CHIT1 and CHI3L1 increased significantly. We also observed that CHIT1 and CHI3L1 are involved in osteoclast function. Indeed, silencing CHIT1 and CHI3L1 with siRNA resulted in a significant decrease in bone resorption activity. In addition, transfection with CHIT1 or CHI3L1 siRNA and co-transfection with both decreased the levels of the pro-differentiative marker MMP9. Overall, these discoveries reveal a novel and crucial role for both CHIT1 and CHI3L1 in promoting bone resorption and identifying new potential candidate markers for therapeutic targeting. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：55 / 63

页数：9

共 50 条

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