Related Experiment Video
Updated: Aug 22, 2025
Modeling Paracrine Noncanonical Wnt Signaling In Vitro
Published on: December 10, 2021
Analysis of CCN4/WISP1 Effects on Joint Tissues Using Gain- and Loss-of-Function Approaches
Martijn H J van den Bosch1, Esmeralda N Blaney Davidson2
1Experimental Rheumatology, Radboud university medical center, Nijmegen, The Netherlands. martijn.vandenbosch@radboudumc.nl.
Abstract:
The matricellular protein Wnt-induced secreted protein 1 (WISP1) is the fourth member of the CCN family of proteins, which has been shown to affect tissues of the musculoskeletal system. In the context of the musculoskeletal disorder osteoarthritis, our lab studied the function of CCN4/WISP1 in joint tissues, including synovium and cartilage, using both gain- and loss-of-function approaches. In mice, this was done by genetic engineering and recombination to generate mice deficient in CCN4/WISP1 protein. Various experimental models of osteoarthritis with different characteristics were induced in these mice. Moreover, CCN4/WISP1 levels in joints were experimentally increased by adenoviral transfections. Osteoarthritis pathology was determined using histology, and the effect of different CCN4/WISP1 levels on gene expression was evaluated in individual tissues. Effects of high levels of CCN4/WISP1 on chondrocytes were studied with an in vitro chondrocyte pellet model. In this chapter, we describe the procedures to conduct these experiments.
Insights
Wnt-induced secreted protein 1 (WISP1), a CCN family member, plays a role in osteoarthritis. Studies in mice explored WISP1
Area of Science:
- Biochemistry
- Molecular Biology
- Orthopedics
Background:
- Wnt-induced secreted protein 1 (WISP1) is a matricellular protein and the fourth member of the CCN family.
- CCN family proteins influence musculoskeletal system tissues.
- Osteoarthritis is a prevalent musculoskeletal disorder.
Purpose of the Study:
- To investigate the function of CCN4/WISP1 in joint tissues (synovium and cartilage) within the context of osteoarthritis.
- To utilize gain- and loss-of-function approaches to understand WISP1's role.
Main Methods:
- Generation of CCN4/WISP1-deficient mice via genetic engineering.
- Induction of various experimental osteoarthritis models in mice.
- Experimental increase of joint CCN4/WISP1 levels using adenoviral transfections.
- Histological assessment of osteoarthritis pathology.
- Evaluation of gene expression changes in response to WISP1 levels.
- In vitro study of WISP1 effects on chondrocytes using a pellet model.
Main Results:
- Detailed procedures for generating WISP1-deficient mice and inducing osteoarthritis models are described.
- Methods for manipulating WISP1 levels and assessing downstream effects on joint tissues and gene expression are outlined.
- In vitro experiments provide insights into WISP1's direct impact on chondrocytes.
Conclusions:
- The described experimental procedures enable comprehensive investigation of WISP1's role in osteoarthritis.
- Understanding WISP1's function in joint tissues can inform therapeutic strategies for osteoarthritis.
Related Concept Videos
01:41Non-Canonical Wnt Signaling Pathways
02:54Canonical Wnt Signaling Pathway