ESPE Yearbook of Paediatric Endocrinology

Cell. 2021 Mar 4;184(5):1330–1347.e13 Abstract: https://pubmed.ncbi.nlm.nih.gov/33636130/In brief: This paper reports an alternative cell fate for multinucleated, bone-resorbing osteoclasts and shows that they may undergo fission into smaller osteomorphs. The findings challenge the current dogma that osteoclasts primarily differentiate from hematopoietic progenitor cells and a...

Proc Natl Acad Sci USA 2021 Feb 23;118(8):e2019152118. Abstract: https://pubmed.ncbi.nlm.nih.gov/33597301/In brief: Sox9 is the key transcription factor and master regulator of chondrocyte differentiation during skeletal development. This paper demonstrates that SOX9 also has a key role during postnatal life to maintain open growth plates and healthy articular cartilage by preventi...

J Bone Miner Res. 2021 Feb;36(2):369–384 Abstract: https://pubmed.ncbi.nlm.nih.gov/33180356/In brief: Chondrocyte-specific ablation of the mechano-sensory Piezo1 results in substantially impaired formation of secondary spongiosa during endochondral bone formation. The study explores this unexpected finding and show that mechano-sensing in growth plate chondrocytes directly reg...

Bone. 2021 Jan;142:115709 Abstract: https://pubmed.ncbi.nlm.nih.gov/33148508/In brief: In the developing bone, PTHrP signaling inhibits hypertrophic differentiation, the key step in the coupling of chondrogenesis and osteogenesis during endochondral bone formation. The current paper reviews findings of previous knockout-studies on PTHrP-induced signaling including HDAC4/5, salt-ind...

Elife. 2020 Oct 16;9:e55212 Abstract: https://pubmed.ncbi.nlm.nih.gov/33063669/In brief: In some species, growth plate and articular cartilage are not separated by secondary ossification centers. Here, the authors used mathematical modeling, ex vivo models and biophysical tests and indirectly demonstrate that secondary ossification centers evolved in order to protect the g...