Title |
Digestion of Chromatin in Apoptotic Cell Microparticles Prevents Autoimmunity
|
---|---|
Published in |
Cell, June 2016
|
DOI | 10.1016/j.cell.2016.05.034 |
Pubmed ID | |
Authors |
Vanja Sisirak, Benjamin Sally, Vivette D’Agati, Wilnelly Martinez-Ortiz, Z. Birsin Özçakar, Joseph David, Ali Rashidfarrokhi, Ada Yeste, Casandra Panea, Asiya Seema Chida, Milena Bogunovic, Ivaylo I. Ivanov, Francisco J. Quintana, Inaki Sanz, Keith B. Elkon, Mustafa Tekin, Fatoş Yalçınkaya, Timothy J. Cardozo, Robert M. Clancy, Jill P. Buyon, Boris Reizis |
Abstract |
Antibodies to DNA and chromatin drive autoimmunity in systemic lupus erythematosus (SLE). Null mutations and hypomorphic variants of the secreted deoxyribonuclease DNASE1L3 are linked to familial and sporadic SLE, respectively. We report that DNASE1L3-deficient mice rapidly develop autoantibodies to DNA and chromatin, followed by an SLE-like disease. Circulating DNASE1L3 is produced by dendritic cells and macrophages, and its levels inversely correlate with anti-DNA antibody response. DNASE1L3 is uniquely capable of digesting chromatin in microparticles released from apoptotic cells. Accordingly, DNASE1L3-deficient mice and human patients have elevated DNA levels in plasma, particularly in circulating microparticles. Murine and human autoantibody clones and serum antibodies from human SLE patients bind to DNASE1L3-sensitive chromatin on the surface of microparticles. Thus, extracellular microparticle-associated chromatin is a potential self-antigen normally digested by circulating DNASE1L3. The loss of this tolerance mechanism can contribute to SLE, and its restoration may represent a therapeutic opportunity in the disease. |
X Demographics
As of 1 July 2024, you may notice a temporary increase in the numbers of X profiles with Unknown location. Click here to learn more.
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 4 | 20% |
Germany | 2 | 10% |
France | 2 | 10% |
United Kingdom | 1 | 5% |
Spain | 1 | 5% |
Finland | 1 | 5% |
Portugal | 1 | 5% |
Unknown | 8 | 40% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 14 | 70% |
Scientists | 5 | 25% |
Science communicators (journalists, bloggers, editors) | 1 | 5% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 2 | <1% |
Bosnia and Herzegovina | 1 | <1% |
Denmark | 1 | <1% |
Unknown | 312 | 99% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 64 | 20% |
Researcher | 50 | 16% |
Student > Bachelor | 34 | 11% |
Student > Master | 28 | 9% |
Other | 17 | 5% |
Other | 45 | 14% |
Unknown | 78 | 25% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 63 | 20% |
Immunology and Microbiology | 56 | 18% |
Medicine and Dentistry | 39 | 12% |
Agricultural and Biological Sciences | 38 | 12% |
Pharmacology, Toxicology and Pharmaceutical Science | 7 | 2% |
Other | 23 | 7% |
Unknown | 90 | 28% |