The in vivo effect of prophylactic subchondral bone protection of osteoarthritic synovial membrane in bone-specific Ephb4-overexpressing mice

Gladys Valverde-Franco, David Hum, Koichi Matsuo, Bertrand Lussier, Jean Pierre Pelletier, Hassan Fahmi, Mohit Kapoor, Johanne Martel-Pelletier

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Osteoarthritis (OA) is characterized by progressive joint destruction, including synovial membrane alteration. EphB4 and its ligand ephrin-B2 were found in vitro to positively affect OA subchondral bone and cartilage. In vivo in an experimental mouse model overexpressing bone-specific Ephb4 (TgEphB4), a protective effect was found on both the subchondral bone and cartilage during OA. We investigated in the TgEphB4 mouse model the in vivo effect on synovial membrane during OA. Knee OA was surgically induced by destabilization of the medial meniscus (DMM). Synovial membrane was evaluated using histology, histomorphometry, IHC, and real-time PCR. Compared to DMM-wild-type (WT) mice, DMMTgEphB4 mice had a significant decrease in synovial membrane thickness, vascular endothelial growth factor, and the profibrotic markers fibrin, type 1 procollagen, type 3 collagen, connective tissue growth factor, smooth muscle actin-α, cartilage oligomeric matrix protein, and procollagen-lysine, and 2-oxoglutarate 5-dioxygenase 2. Moreover, factors known to modulate transforming growth factor-β signaling, transforming growth factor receptor 1/ALK1, phosphorylated Smad-1, and heat shock protein 90β were significantly decreased in DMM-TgEphB4 compared with DMM-WT mice. Ephb4 overexpression also exhibited a protective effect on synovial membrane thickness of aged (24-month-old) mice. Overexpression of bone-specific Ephb4 clearly demonstrated prevention of the development and/or progression of fibrosis in OA synovial membrane, reinforcing the hypothesis that protecting the subchondral bone prophylactically and during OA reduces the pathologic changes in other articular tissues.

Original languageEnglish
Pages (from-to)335-346
Number of pages12
JournalAmerican Journal of Pathology
Volume185
Issue number2
DOIs
Publication statusPublished - 2014

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Synovial Membrane
Osteoarthritis
Tibial Meniscus
Bone and Bones
Collagen Type III
Transforming Growth Factors
Cartilage
Ephrin-B2
2-Oxoglutarate 5-Dioxygenase Procollagen-Lysine
Joints
Cartilage Oligomeric Matrix Protein
Connective Tissue Growth Factor
HSP90 Heat-Shock Proteins
Growth Factor Receptors
Knee Osteoarthritis
Collagen Type I
Fibrin
Vascular Endothelial Growth Factor A
Smooth Muscle
Actins

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

The in vivo effect of prophylactic subchondral bone protection of osteoarthritic synovial membrane in bone-specific Ephb4-overexpressing mice. / Valverde-Franco, Gladys; Hum, David; Matsuo, Koichi; Lussier, Bertrand; Pelletier, Jean Pierre; Fahmi, Hassan; Kapoor, Mohit; Martel-Pelletier, Johanne.

In: American Journal of Pathology, Vol. 185, No. 2, 2014, p. 335-346.

Research output: Contribution to journalArticle

Valverde-Franco, Gladys ; Hum, David ; Matsuo, Koichi ; Lussier, Bertrand ; Pelletier, Jean Pierre ; Fahmi, Hassan ; Kapoor, Mohit ; Martel-Pelletier, Johanne. / The in vivo effect of prophylactic subchondral bone protection of osteoarthritic synovial membrane in bone-specific Ephb4-overexpressing mice. In: American Journal of Pathology. 2014 ; Vol. 185, No. 2. pp. 335-346.
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