Crossref journal-article
The Company of Biologists
Development (237)
Abstract

ABSTRACT During postblastoderm embryogenesis in Drosophila, cell cycles progress in an invariant spatiotemporal pattern. Most of these cycles are differentially timed by bursts of transcription of string (cdc25), a gene encoding a phosphatase that triggers mitosis by activating the Cdc2 kinase. An analysis of string expression in 36 pattern-formation mutants shows that known patterning genes act locally to influence string transcription. Embryonic expression of string gene fragments shows that the complete pattern of string transcription requires extensive cis-acting regulatory sequences (>15.3 kb), but that smaller segments of this regulatory region can drive proper temporal expression in defined spatial domains. We infer that string upstream sequences integrate many local signals to direct string’s transcriptional program. Finally, we show that the spatiotemporal progression of string transcription is largely unaffected in mutant embryos specifically arrested in G2 of cycles 14, 15, or 16, or G1 of cycle 17. Thus, there is a regulatory hierarchy in which developmental inputs, not cell cycle inputs, control the timing of string transcription and hence cell cycle progression.

Bibliography

Edgar, B. A., Lehman, D. A., & O’Farrell, P. H. (1994). Transcriptional regulation of string (cdc25): a link between developmental programming and the cell cycle. Development, 120(11), 3131–3143.

Authors 3
  1. Bruce A. Edgar (first)
  2. Dara A. Lehman (additional)
  3. Patrick H. O’Farrell (additional)
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Dates
Type When
Created 4 years, 4 months ago (April 25, 2021, 9:57 p.m.)
Deposited 8 months, 2 weeks ago (Dec. 17, 2024, 6:56 p.m.)
Indexed 21 hours, 39 minutes ago (Sept. 3, 2025, 6:05 a.m.)
Issued 30 years, 10 months ago (Nov. 1, 1994)
Published 30 years, 10 months ago (Nov. 1, 1994)
Published Online 30 years, 10 months ago (Nov. 1, 1994)
Published Print 30 years, 10 months ago (Nov. 1, 1994)
Funders 0

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@article{Edgar_1994, title={Transcriptional regulation of string (cdc25): a link between developmental programming and the cell cycle}, volume={120}, ISSN={1477-9129}, url={http://dx.doi.org/10.1242/dev.120.11.3131}, DOI={10.1242/dev.120.11.3131}, number={11}, journal={Development}, publisher={The Company of Biologists}, author={Edgar, Bruce A. and Lehman, Dara A. and O’Farrell, Patrick H.}, year={1994}, month=nov, pages={3131–3143} }