RETRACTED: Fam208a orchestrates interaction protein network essential for early embryonic development and cell division
Authors: Radislav Sedlacek
Jan Prochazka
Veronika Gresakova
Michaela Prochazkova
Irena Jenickova
Vendula Novosadova
Shohag Bhargava
Journal: Experimental Cell Research (2019)
Discipline: MOLECULAR BIOLOGY & GENETICS
Keywords: Fam208a; Genome stability; HUSH; Multipolar spindle apparatus.
Affiliations: Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i, Průmyslova 595, 252 50, Vestec, Czech Republic; Palacky University in Olomouc, Faculty of Medicine and Dentistry, Hněvotínská 3775 15, Olomouc, Czech Republic. Electronic address: ., Czech Centre of Phenogenomics, Institute of Molecular Genetics, ASCR v.v.i, Průmyslova 595, 252 50, Vestec, Czech Republic. Electronic address: ., Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i, Průmyslova 595, 252 50, Vestec, Czech Republic. Electronic address: ., Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i, Průmyslova 595, 252 50, Vestec, Czech Republic; Czech Centre of Phenogenomics, Institute of Molecular Genetics, ASCR v.v.i, Průmyslova 595, 252 50, Vestec, Czech Republic. Electronic address: .

Abstract:  Maintenance of genome stability is essential for every living cell as genetic information is repeatedly challenged during DNA replication in each cell division event. Errors, defects, delays, and mistakes that arise during mitosis or meiosis lead to an activation of DNA repair processes and in case of their failure, programmed cell death, i.e. apoptosis, could be initiated. Fam208a is a protein whose importance in heterochromatin maintenance has been described recently. In this work, we describe the crucial role of Fam208a in sustaining the genome stability during the cellular division. The targeted depletion of Fam208a in mice using CRISPR/Cas9 leads to embryonic lethality before E12.5. We also used the siRNA approach to downregulate Fam208a in zygotes to avoid the influence of maternal RNA in the early stages of development. This early downregulation increased arresting of the embryonal development at the two-cell stage and occurrence of multipolar spindles formation. To investigate this further, we used the yeast two-hybrid (Y2H) system and identified new putative interaction partners Gpsm2, Amn1, Eml1, Svil, and Itgb3bp. Their co-expression with Fam208a was assessed by qRT-PCR profiling and in situ hybridisation [1] in multiple murine tissues. Based on these results we proposed that Fam208a functions within the HUSH complex by interaction with Mphosph8 as these proteins are not only able to physically interact but also co-localise. We are bringing new evidence that Fam208a is multi-interacting protein affecting genome stability on the level of cell division at the earliest stages of development and also by interaction with methylation complex in adult tissues. In addition to its epigenetic functions, Fam208a appears to have an additional role in zygotic division, possibly via interaction with newly identified putative partners Gpsm2, Amn1, Eml1, Svil, and Itgb3bp. 

Retracted: Yes

PubPeer comments:
 This article reports correlations between global and domain specific judgments of satisfaction across a variety of conditions. The conclusions are based on comparisons of correlations across the different conditions. The study is extremely underpowered to demonstrate reliable patterns in the magnitude of correlations with N = 50 per cell of the design. Not surprisingly, some of the key findings are not consistent with other studies and a direct replication failed to replicate the key finding. Thus, this article should no longer be cited as evidence for the conversational norm theory that was used to explain the unreliable patterns in the data. https: journals.sagepub.com doi full 10.1177 2515245918810225 https: osf.io 8cd4r https: replicationindex.com 2018 11 27 kahneman-wrong-about-life-satisfaction ,