Affiliation: University of Pennsylvania, Perelman School of Medicine, Department of Dermatology, Philadelphia, PA, 19104, USA.

 Dr Liu is a faculty at Perelman School of Medicine, University of Pennsylvania. He received his medical education from Tianjin Medical University, China. He then practiced as an internist and worked on aging patients with cardio-metabolic, and autoimmune diseases for about 10 years in Tianjin Medical University General Hospital. After that, he received his PhD training from the University of Helsinki, Finland, and went on to pursue his postdoctoral training in Thomas Jefferson University in the US. His current research interest focuses on cell death and inflammation, as well as the release of extracellular NETs (neutrophil extracellular traps) or extracellular vesicles from dead cells, and their involvement in autoimmune and cardio-metabolic diseases. By far, he has published over 40 publications, among which over 20 publications are related to extracellular vesicles or extracellular NETs, which are from original research, review articles, and book chapters in the area of cardio-metabolic and autoimmune diseases. His ongoing research projects are about mechanistic involvement of extracellular NETs or extracellular vesicles in cutaneous and systemic lupus. In addition, he investigates the effects of UVB exposure on skin inflammation, cutaneous lupus, and systemic lupus. In this Method Collections, he, and his co-guest editors, will work together to bring research methods together for lupus research community.