Title |
Monomeric C-Reactive Protein Binds and Neutralizes Receptor Activator of NF-κB Ligand-Induced Osteoclast Differentiation
|
---|---|
Published in |
Frontiers in immunology, February 2018
|
DOI | 10.3389/fimmu.2018.00234 |
Pubmed ID | |
Authors |
Zhe-Kun Jia, Hai-Yun Li, Yu-Lin Liang, Lawrence Albert Potempa, Shang-Rong Ji, Yi Wu |
Abstract |
C-reactive protein (CRP) is an established marker of rheumatoid arthritis (RA) but with ill-defined actions in the pathogenesis. Here, we show that CRP regulates the differentiation of osteoclasts, a central mediator of joint inflammation and bone erosion in RA, in a conformation- and receptor activator of NF-κB ligand (RANKL)-dependent manner. CRP in the native conformation is ineffective, whereas the monomeric conformation (mCRP) actively modulates osteoclast differentiation through NF-κB and phospholipase C signaling. Moreover, mCRP can bind RANKL, the major driver of osteoclast differentiation, and abrogate its activities. The binding and inhibition of RANKL are mediated by the cholesterol binding sequence (CBS) of mCRP. Corroborating the in vitro results, CRP knockout exacerbates LPS-induced bone resorption in mice. These results suggest that mCRP may be protective in joint inflammation by inhibiting pathological osteoclast differentiation and that the CBS peptide could be exploited as a potential RANKL inhibitor. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Switzerland | 1 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 20 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 5 | 25% |
Student > Master | 3 | 15% |
Student > Doctoral Student | 2 | 10% |
Student > Bachelor | 2 | 10% |
Other | 2 | 10% |
Other | 0 | 0% |
Unknown | 6 | 30% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 6 | 30% |
Medicine and Dentistry | 2 | 10% |
Environmental Science | 1 | 5% |
Pharmacology, Toxicology and Pharmaceutical Science | 1 | 5% |
Agricultural and Biological Sciences | 1 | 5% |
Other | 3 | 15% |
Unknown | 6 | 30% |