At the end of the road, a new start.
Science (New York, N.Y.)
2018; 362 (6418): 1078
View details for PubMedID 30498129
Inflammatory Cytokine TNF? Promotes the Long-Term Expansion of Primary Hepatocytes in 3D Culture.
2018; 175 (6): 1607?19.e15
In the healthy adult liver, most hepatocytes proliferate minimally. However, upon physical or chemical injury to the liver, hepatocytes proliferate extensively inávivo under the direction of multiple extracellular cues, including Wnt and pro-inflammatory signals. Currently, liver organoids can be generated readily inávitro from bile-duct epithelial cells, but notáhepatocytes. Here, we show that TNF?, an injury-induced inflammatory cytokine, promotes the expansion of hepatocytes in 3D culture and enables serial passaging and long-term culture for more than 6ámonths. Single-cell RNA sequencing reveals broad expression of hepatocyte markers. Strikingly, inávitro-expanded hepatocytes engrafted, and significantly repopulated, the injured livers of Fah-/- mice. We anticipate that tissue repair signals can be harnessed to promote the expansion of otherwise hard-to-culture cell-types, with broad implications.
View details for PubMedID 30500539