Compound heterozygous variations in IARS1 cause recurrent liver failure and growth retardation in a Chinese patient: a case report.

Background: Aminoacyl-tRNA synthetases (ARSs) are enzymes responsible for attaching amino acids to tRNA, which enables protein synthesis. Mutations in isoleucyl-tRNA synthetase (IARS1) have recently been reported to be a genetic cause for growth retardation, intellectual disability, muscular hypotonia, and infantile hepatopathy (GRIDHH).

Case Presentation: In this study, we reported an additional case of compound heterozygous missense variations c.

Clock1a affects mesoderm development and primitive hematopoiesis by regulating Nodal-Smad3 signaling in the zebrafish embryo.

Circadian clock and Smad2/3/4-mediated Nodal signaling regulate multiple physiological and pathological processes. However, it remains unknown whether Clock directly cross-talks with Nodal signaling and how this would regulate embryonic development. Here we show that Clock1a coordinated mesoderm development and primitive hematopoiesis in zebrafish embryos by directly up-regulating Nodal-Smad3 signaling.

Polyethylene glycol modification decreases the cardiac toxicity of carbonaceous dots in mouse and zebrafish models.

Aim: Carbonaceous dots (CDs), which have been used for diagnosis, drug delivery and gene delivery, are accumulated in heart at high concentrations. To improve their biocompatibility, polyethylene glycol-modified CDs (PEG-CDs) were prepared. In this study we compared the cardiac toxicity of CDs and PEG-CDs in mouse and zebrafish models.

[Roles of miR-15b in endothelial cell function and their relevance to vascular diseases].

MicroRNAs (miRNAs) are noncoding RNAs with a short length of about 22 nucleotides. As major modulators participating in RNA interference, they affect cellular behaviors by regulating the expression of diverse genes at post-transcriptional levels. miR-15b is a member of the miR-15/16 family, which is broadly expressed in major tissues and specially enriched in the endovascular system of human beings.

[Initial study on zili functions to the development of the germ layers during zebrafish early embryogenesis].

Objective: To study the role for piwil2 gene (zili) in the development of the ectoderm, mesoderm and endoderm during early embryogenesis of zebrafish.

Methods: zili morpholino antisense oligonucleotide and 5 mis-pair control morpholino were used in this study. zili was cloned into expression vector.