ISSN 1662-4009 (online)

ey0017.14-2 | (1) | ESPEYB17

14.2. The dental proteome of homo antecessor

F Welker , J Ramos-Madrigal , P Gutenbrunner , M Mackie , S Tiwary , R Rakownikow Jersie-Christensen , C Chiva , MR Dickinson , M Kuhlwilm , M de Manuel , P Gelabert , M Martinon-Torres , A Margvelashvili , JL Arsuaga , E Carbonell , T Marques-Bonet , K Penkman , E Sabido , J Cox , JV Olsen , D Lordkipanidze , F Racimo , C Lalueza-Fox , de Castro JM Bermudez , E Willerslev , E Cappellini

To read the full abstract: Nature 2020;580:235–238.These authors applied modern protein analysis to an ancient molar from a male Homo antecessor dated to 772–949 thousand years ago (kya) from the Sierra de Atapuerca in Burgos, Spain and also to dentine and enamel from a Homo erectus dated to 1770 kya. They found that the composition of these proteomes is similar to that of modern humans, including enamel-specific amel...

ey0016.5-7 | New Insight into Rare Skeletal Disorders | ESPEYB16

5.7. Gain-of-function DNMT3A mutations cause microcephalic dwarfism and hypermethylation of Polycomb-regulated regions

P Heyn , CV Logan , A Fluteau , RC Challis , T Auchynnikava , CA Martin , JA Marsh , F Taglini , F Kilanowski , DA Parry , V Cormier-Daire , CT Fong , K Gibson , V Hwa , L Ibanez , SP Robertson , G Sebastiani , J Rappsilber , RC Allshire , MAM Reijns , A Dauber , D Sproul , AP Jackson

Abstract Link: Nat Genet. 2019 Jan;51(1):96–105.In brief: Gain-of-function mutations altering DNMT3A are identified as a new cause of microcephalic dwarfism. Modelling of the disease in mice show that the mutations abrogate DNMT3A binding to H3K36me2 and H3K36me3 and lead to aberrant DNA methylation of Polycomb-marked regions and therefore repression ...

ey0016.7-3 | Basic Science | ESPEYB16

7.3. Metabolic regulation of female puberty via hypothalamic AMPK-kisspeptin signaling

J Roa , A Barroso , F Ruiz-Pino , MJ Vazquez , P Seoane-Collazo , N Martinez-Sanchez , D Garcia-Galiano , T Ilhan , R Pineda , S Leon , M Manfredi-Lozano , V Heras , M Poutanen , JM Castellano , F Gaytan , C Dieguez , L Pinilla , M Lopez , M Tena-Sempere

To read the full abstract: Proc Natl Acad Sci U S A. 2018 Nov 6;115(45):E10758–E10767.The authors show for the first time that central AMP-activated protein kinase (AMPK), the major cellular energy sensor, interplays with Kiss1 to control puberty onset.AMPK is an indispensable cellular energy sensor (1). Beside its ability to directly sense ener...

ey0020.5-11 | Basic Research | ESPEYB20

5.11. Dicer ablation in Kiss1 neurons impairs puberty and fertility preferentially in female mice

J Roa , M Ruiz-Cruz , F Ruiz-Pino , R Onieva , MJ Vazquez , MJ Sanchez-Tapia , JM Ruiz-Rodriguez , V Sobrino , A Barroso , V Heras , I Velasco , C Perdices-Lopez , C Ohlsson , MS Avendano , V Prevot , M Poutanen , L Pinilla , F Gaytan , M Tena-Sempere

Brief summary: A newly developed mouse model of congenital ablation of Dicer in kisspeptin neurons was used to identify a role for miRNAs in kisspeptin neuron activity and control of reproduction.The last few years have seen a shift in paradigm with the discovery of epigenetic mechanisms regulating GnRH neuron activity and thus puberty and reproduction. In particular, miRNAs appear to play a crucial role in the maturation and function of the hypothalamic...

ey0018.1-9 | Genetics | ESPEYB18

1.9. Requirement of FAT and DCHS protocadherins during hypothalamic-pituitary development

EJ Lodge , P Xekouki , TS Silva , C Kochi , CA Longui , FR Faucz , A Santambrogio , JL Mills , N Pankratz , J Lane , D Sosnowska , T Hodgson , AL Patist , P Francis-West , F Helmbacher , C Stratakis , CL Andoniadou

JCI Insight. 2020 Oct 27;5(23):e134310. doi: 10.1172/jci.insight.134310. PMID: 33108146.Lodge et al. screened 28 patients with pituitary stalk interruption syndrome (PSIS) for mutations in the FAT/DCHS (FAT atypical cadherin/ Dachsous cadherin-related) family of protocadherins. FAT2 and DCHS2 putative damaging variants were found in 6/28 patients with ectopic ...

ey0018.3-4 | Thyroid development | ESPEYB18

3.4. Single-cell transcriptome analysis reveals thyrocyte diversity in the zebrafish thyroid gland

P Gillotay , M Shankar , B Haerlingen , E Sema Elif , M Pozo-Morales , I Garteizgogeascoa , S Reinhardt , A Krankel , J Blasche , A Petzold , N Ninov , G Kesavan , C Lange , M Brand , A Lefort , F Libert , V Detours , S Costagliola , S Sumeet Pal

EMBO Rep. 2020;21:e50612. doi: 10.15252/embr.202050612.This zebrafish study identified and molecularly characterized adult transcriptionally different thyrocyte subpopulations even within the same follicle.It is well established that within a thyroid gland, follicles are heterogenous concerning functional activity. More active follicles are characterized by a high co...

ey0018.4-11 | New Perspectives | ESPEYB18

4.11. Genetic architecture associated with familial short stature

Lin Y , Cheng C , Wang C , Liang W , Tang C , Tsai L , Chen C , Wu J , Hsieh A , Lee M , Lin T , Liao C , Huang S , Zhang Y , Tsai C , Tsai F

J Clin Endocrinol Metab. 2020 Jun 1;105(6):dgaa131. doi: 10.1210/clinem/dgaa131. PMID: 32170311Genetic control of height has been widely explored using genome-wide association studies (GWAS) in multi-ethnic populations (1-4). Although familial short stature (FSS) is the most common type of short stature, its genetic profile and impact on bone metabolism remains to be investigated. This GWAS...

ey0018.4-12 | New Perspectives | ESPEYB18

4.12. DNA methylation profiling and genomic analysis in 20 children with short stature who were born small for gestational age

S Peeters , K Declerck , M Thomas , E Boudin , D Beckers , O Chivu , C Heinrichs , K Devriendt , F de Zegher , Hul Van , Vanden Wim , V Berghe , J De Schepper , R Rooman , G Mortier

J Clin Endocrinol Metab. 2020;105(2):dgaa465. doi: 10.1210/clinem/dgaa465. PMID: 32685970This study aimed to identify potential (epi)genetic causes of short stature in 20 SGA children (13 boys; 7 girls) treated with rhGH. Exome sequencing, single-nucleotide polymorphism (SNP) array (both performed in the whole cohort) and genome-wide methylation analysis (performed in a random subset of 10 ...

ey0018.5-11 | Translational highlights | ESPEYB18

5.11. Crtap and p3h1 knock out zebrafish support defective collagen chaperoning as the cause of their osteogenesis imperfecta phenotype

Tonelli F , Cotti S , Leoni L , Besio R , Gioia R , Marchese L , Giorgetti S , Villani S , Gistelinck C , Wagener R , Kobbe B , Fiedler I A K , Larionova D , Busse B , Eyre D , Rossi A , Witten P E , Forlino A

Matrix Biol. 2020 Aug;90:40–60 Abstract: https://pubmed.ncbi.nlm.nih.gov/32173581/In brief: Mutations in 3-hydroxylation complex genes CRTAP and P3H1 cause osteogenesis imperfecta type VII and VIII, respectively. However, the pathogenic mechanism by which these mutations cause disease remains unclear. This study points to a defective chaperone role of the 3-h...