Zelda’s Role in Controlling Gene Expression in the Early Embryo

Authors

  • Hao Wang

DOI:

https://doi.org/10.61173/snbxm151

Keywords:

Zinc-finger protein, TAGsites, embryos

Abstract

Much research investigates the influence of Zelda (Zinc-finger early Drosophila Embryo activator, Zld) on early embryo development. CAGGTAG and related sequences are common in the early transcribed genes in Drosophila. These are all referred to as sites that can activate transcription and are responsible for maternal RNA degradation (as cited in Liang et al., 2008). However, it is still unknown whether other activators can help gene expression. Here, we analyze the effect of Zld on specific genes, such as Halo, by chromatin immunoprecipitation assays. One result is that the gene expression is low in the absence of Zld, which could suggest that Zld plays an important role in the activation of early development of the Drosophila embryo.

References

[1] Chung-Yi Nien, Hsiao-Lan Liang, et al. (2011) Temporal Coordination of Gene Networks by Zelda in the Early Drosophila Embryo.

[2] Hsiao-Lan Liang, Chung-Yi Nien, et al. (2008) The zincfinger protein Zelda is a key activator of the early zygotic genome in Drosophila.

[3] Yujia Sun, Chung-Yi Nien, et al. (2023) Zelda overcomes the high intrinsic nucleosome barrier at enhancers during Drosophila zygotic genome activation.

[4] Nicol JW, Helt GA, Blanchard SG, Raja A, Loraine AE (2009) The Integrated Genome Browser: free software for distribution and exploration of genome-scale datasets. Bioinformatics 25: 2730–2731.

[5] Ten Bosch, J. R., Benavides, J. A. & Cline, T. W. The TAGteam DNA motif controls the timing of Drosophila preblastoderm transcription. Development 133, 1967–1977 (2006).

[6] Li, X. et al. Transcription factors bind thousands of active and inactive regions in the Drosophila blastoderm. PLoS Biol. 6, 365–388 (2008).

[7] Jiang, J., Rushlow, C. A., Zhou, Q., Small, S. & Levine, M. Individual Dorsal morphogen binding sites mediate activation and repression in the Drosophila embryo. EMBO J. 11, 3147– 3154 (1992).

[8] Lecuit, T., Samanta, R. &Wieschaus, E.slam encodes a developmental regulator of polarized membrane growth during cleavage of the Drosophila embryo. Dev. Cell 2, 425–436 (2002).

[9] Staudt, N., Fellert, S., Chung, H., Ja¨ckle, H. & Vorbru¨ggen, G. Mutations of the Drosophila zinc finger-encoding gene vielfa¨ltig impair mitotic cell divisions and cause improper chromosome segregation. Mol. Biol. Cell 17, 2356–2365 (2006).

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Published

2024-02-19