Very impressive work by a team of doctors finding cause of the disease Lupus.

We’ve identified a fundamental imbalance in the immune responses that patients with lupus make, and we’ve defined specific mediators that can correct this imbalance to dampen the pathologic autoimmune response,” said co-corresponding author Deepak Rao, MD, PhD, an assistant professor of medicine at Harvard Medical School and a rheumatologist at Brigham and Women’s Hospital and co-director of its Center for Cellular Profiling. 

 

In the study, the scientists reported a new pathway that drives disease in lupus. There are disease-associated changes in multiple molecules in the blood of patients with lupus. Ultimately, these changes lead to insufficient activation of a pathway controlled by the aryl hydrocarbon receptor (AHR), which regulates cells’ response to environmental pollutants, bacteria or metabolites. Insufficient activation of AHR results in too many disease-promoting immune cells, called the T peripheral helper cells, that promote the production of disease-causing autoantibodies.

 

To show this discovery can be leveraged for treatments, the investigators returned the aryl hydrocarbon receptor-activating molecules to blood samples from lupus patients. This seemed to reprogram these lupus-causing cells into a cell called a Th22 cell that may promote wound healing from the damage caused by this autoimmune disease.

Obvious caveats. Any type of drugs to reverse Lupus are a long ways off. What is great is that they landed in Nature which may spark more interest in this area of study. 

Source: Northwestern Medicine