ISSN 1662-4009 (online)

ey0016.4-14 | Mechanism of the Year | ESPEYB16

4.14. IGF-2 preprograms maturing macrophages to acquire oxidative phosphorylation-dependent anti-inflammatory properties

L Du , L Lin , Q Li , K Liu , Y Huang , X Wang , K Cao , X Chen , W Cao , F Li , C Shao , Y Wang , Y Shi

To read the full abstract: Cell Metab. 2019 4;29:1363–1375.Mesenchymal stem and/or stromal cells (MSCs) regulate immune system and have been associated with inflammatory and autoimmune diseases. The IGF system is mainly known for its role in the regulation of growth, development and metabolism. A possible role of IGF-I in inflammation has recently been proposed [1, 2], whereas the e...

ey0020.3-14 | Advances in Growth, Bone Biology, and Mineral Metabolism | ESPEYB20

3.14. SIRT2 regulates extracellular vesicle-mediated liver-bone communication

L Lin , Z Guo , E He , X Long , D Wang , Y Zhang , W Guo , Q Wei , W He , W Wu , J Li , L Wo , D Hong , J Zheng , M He , Q Zhao

In Brief: These authors studied liver-specific SIRT2 knockout mice to examine how loss of hepatocyte SIRT2 (Sirtuin 2) prevents bone loss in aged mice. Hepatocyte SIRT2 deficiency led to upregulation of Leucine rich α2 glycoprotein (LRG1) in hepatocyte-derived small extracellular vesicles (sEVs) which inhibited osteoclastogenesis in bone marrow.Commentary: Liver-bone communication has been implicated in bone homeostasis. P...