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We describe an enhancer trap transgenic zebrafish line, ETvmat2:GFP, in which most monoaminergic neurons are labeled by green fluorescent protein (GFP) during embryonic development. The reporter gene of ETvmat2:GFP was inserted into the second intron of vesicular monoamine transporter 2 (vmat2) gene, and the GFP expression pattern recapitulates that of the(More)
The grass carp is an important farmed fish, accounting for ∼16% of global freshwater aquaculture, and has a vegetarian diet. Here we report a 0.9-Gb draft genome of a gynogenetic female adult and a 1.07-Gb genome of a wild male adult. Genome annotation identified 27,263 protein-coding gene models in the female genome. A total of 114 scaffolds consisting of(More)
During apoptosis, dying cells are quickly internalized by neighboring cells or phagocytes, and are enclosed in phagosomes that undergo a maturation process to generate the phagoslysosome, in which cell corpses are eventually degraded. It is not well understood how apoptotic cell degradation is regulated. Here we report the identification and(More)
We report gene targeting via homologous recombination in zebrafish. We co-injected fertilized eggs with transcription activator-like effector nuclease mRNAs and a donor vector with long homologous arms targeting the tyrosine hydroxylase (th) locus, and we observed effective gene modification that was transmitted through the germ line. We also successfully(More)
The CRISPR/Cas or Cas9/guide RNA system is a newly developed, easily engineered and highly effective tool for gene targeting; it has considerable off-target effects in cultured human cells and in several organisms. However, the Cas9/guide RNA target site is too short for existing alignment tools to exhaustively and effectively identify potential off-target(More)
Using a combination of techniques we developed, we infected zebrafish embryos using pseudotyped retroviruses and mapped the genomic locations of the proviral integrations in the F(1) offspring of the infected fish. From F(1) fish, we obtained 2,045 sequences representing 933 unique retroviral integrations. A total of 599 were mappable to the current genomic(More)
The ability to utilize the RNA interference (RNAi) machinery for silencing target-gene expression has created a lot of excitement in the research community. In the present study, we used a cytomegalovirus (CMV) promoter-driven DNA template approach to induce short hairpin RNA (shRNA) triggered RNAi to block exogenous Enhanced Green Fluorescent Protein(More)
Somatic cell nuclear transfer (SCNT) has been performed extensively in fish since the 1960s with a generally low efficiency of approximately 1%. Little is known about somatic nuclear reprogramming in fish. Here, we utilized the zebrafish as a model to study reprogramming events of nuclei from tail, liver and kidney cells by SCNT. We produced a total of(More)
Growth factor independence 1 (GFI1) is important for maturation of mammalian lymphocytes and neutrophils and maintenance of adult hematopoietic stem cells (HSCs). The role of GFI1 in embryonic hematopoiesis is less well characterized. Through an enhancer trap screen and bioinformatics analysis, we identified a zebrafish homolog of Gfi1 (named gfi1.1) and(More)