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. 1996 Jan;142(1):163–171. doi: 10.1093/genetics/142.1.163

Mutations Modulating Raf Signaling in Drosophila Eye Development

B J Dickson 1, A van-der-Straten 1, M Dominguez 1, E Hafen 1
PMCID: PMC1206944  PMID: 8770593

Abstract

The R7 fate is specified during Drosophila eye development by an inductive signal transduced intracellularly via the Raf kinase. We have performed a genetic screen for dominant mutations that alter the efficiency with which cells respond to a constitutively activated Raf kinase. Such mutations may affect genes involved in signal transduction downstream of Raf. We have isolated 44 mutations that define eight genes. One of these encodes a mitogen-activated protein kinase homologue; another is a putative target gene of this signaling pathway. We present the results of this screen in detail, as well as a preliminary genetic analysis of the six loci still to be characterized molecularly.

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Selected References

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  1. Basler K., Christen B., Hafen E. Ligand-independent activation of the sevenless receptor tyrosine kinase changes the fate of cells in the developing Drosophila eye. Cell. 1991 Mar 22;64(6):1069–1081. doi: 10.1016/0092-8674(91)90262-w. [DOI] [PubMed] [Google Scholar]
  2. Basler K., Siegrist P., Hafen E. The spatial and temporal expression pattern of sevenless is exclusively controlled by gene-internal elements. EMBO J. 1989 Aug;8(8):2381–2386. doi: 10.1002/j.1460-2075.1989.tb08367.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Biggs W. H., 3rd, Zavitz K. H., Dickson B., van der Straten A., Brunner D., Hafen E., Zipursky S. L. The Drosophila rolled locus encodes a MAP kinase required in the sevenless signal transduction pathway. EMBO J. 1994 Apr 1;13(7):1628–1635. doi: 10.1002/j.1460-2075.1994.tb06426.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Biggs W. H., 3rd, Zipursky S. L. Primary structure, expression, and signal-dependent tyrosine phosphorylation of a Drosophila homolog of extracellular signal-regulated kinase. Proc Natl Acad Sci U S A. 1992 Jul 15;89(14):6295–6299. doi: 10.1073/pnas.89.14.6295. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Brunner D., Dücker K., Oellers N., Hafen E., Scholz H., Klämbt C. The ETS domain protein pointed-P2 is a target of MAP kinase in the sevenless signal transduction pathway. Nature. 1994 Aug 4;370(6488):386–389. doi: 10.1038/370386a0. [DOI] [PubMed] [Google Scholar]
  6. Brunner D., Oellers N., Szabad J., Biggs W. H., 3rd, Zipursky S. L., Hafen E. A gain-of-function mutation in Drosophila MAP kinase activates multiple receptor tyrosine kinase signaling pathways. Cell. 1994 Mar 11;76(5):875–888. doi: 10.1016/0092-8674(94)90362-x. [DOI] [PubMed] [Google Scholar]
  7. Chang H. C., Solomon N. M., Wassarman D. A., Karim F. D., Therrien M., Rubin G. M., Wolff T. phyllopod functions in the fate determination of a subset of photoreceptors in Drosophila. Cell. 1995 Feb 10;80(3):463–472. doi: 10.1016/0092-8674(95)90497-2. [DOI] [PubMed] [Google Scholar]
  8. Dickson B. J., Domínguez M., van der Straten A., Hafen E. Control of Drosophila photoreceptor cell fates by phyllopod, a novel nuclear protein acting downstream of the Raf kinase. Cell. 1995 Feb 10;80(3):453–462. doi: 10.1016/0092-8674(95)90496-4. [DOI] [PubMed] [Google Scholar]
  9. Dickson B., Sprenger F., Morrison D., Hafen E. Raf functions downstream of Ras1 in the Sevenless signal transduction pathway. Nature. 1992 Dec 10;360(6404):600–603. doi: 10.1038/360600a0. [DOI] [PubMed] [Google Scholar]
  10. Duffy J. B., Perrimon N. The torso pathway in Drosophila: lessons on receptor tyrosine kinase signaling and pattern formation. Dev Biol. 1994 Dec;166(2):380–395. doi: 10.1006/dbio.1994.1324. [DOI] [PubMed] [Google Scholar]
  11. Fantl W. J., Muslin A. J., Kikuchi A., Martin J. A., MacNicol A. M., Gross R. W., Williams L. T. Activation of Raf-1 by 14-3-3 proteins. Nature. 1994 Oct 13;371(6498):612–614. doi: 10.1038/371612a0. [DOI] [PubMed] [Google Scholar]
  12. Fortini M. E., Simon M. A., Rubin G. M. Signalling by the sevenless protein tyrosine kinase is mimicked by Ras1 activation. Nature. 1992 Feb 6;355(6360):559–561. doi: 10.1038/355559a0. [DOI] [PubMed] [Google Scholar]
  13. Freed E., Symons M., Macdonald S. G., McCormick F., Ruggieri R. Binding of 14-3-3 proteins to the protein kinase Raf and effects on its activation. Science. 1994 Sep 16;265(5179):1713–1716. doi: 10.1126/science.8085158. [DOI] [PubMed] [Google Scholar]
  14. Heberlein U., Rubin G. M. Star is required in a subset of photoreceptor cells in the developing Drosophila retina and displays dosage sensitive interactions with rough. Dev Biol. 1991 Apr;144(2):353–361. doi: 10.1016/0012-1606(91)90427-5. [DOI] [PubMed] [Google Scholar]
  15. Hou X. S., Chou T. B., Melnick M. B., Perrimon N. The torso receptor tyrosine kinase can activate Raf in a Ras-independent pathway. Cell. 1995 Apr 7;81(1):63–71. doi: 10.1016/0092-8674(95)90371-2. [DOI] [PubMed] [Google Scholar]
  16. Hsu J. C., Perrimon N. A temperature-sensitive MEK mutation demonstrates the conservation of the signaling pathways activated by receptor tyrosine kinases. Genes Dev. 1994 Sep 15;8(18):2176–2187. doi: 10.1101/gad.8.18.2176. [DOI] [PubMed] [Google Scholar]
  17. Kolodkin A. L., Pickup A. T., Lin D. M., Goodman C. S., Banerjee U. Characterization of Star and its interactions with sevenless and EGF receptor during photoreceptor cell development in Drosophila. Development. 1994 Jul;120(7):1731–1745. doi: 10.1242/dev.120.7.1731. [DOI] [PubMed] [Google Scholar]
  18. Lai Z. C., Rubin G. M. Negative control of photoreceptor development in Drosophila by the product of the yan gene, an ETS domain protein. Cell. 1992 Aug 21;70(4):609–620. doi: 10.1016/0092-8674(92)90430-k. [DOI] [PubMed] [Google Scholar]
  19. Leevers S. J., Paterson H. F., Marshall C. J. Requirement for Ras in Raf activation is overcome by targeting Raf to the plasma membrane. Nature. 1994 Jun 2;369(6479):411–414. doi: 10.1038/369411a0. [DOI] [PubMed] [Google Scholar]
  20. Lu X., Melnick M. B., Hsu J. C., Perrimon N. Genetic and molecular analyses of mutations involved in Drosophila raf signal transduction. EMBO J. 1994 Jun 1;13(11):2592–2599. doi: 10.1002/j.1460-2075.1994.tb06549.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Marshall C. J. Specificity of receptor tyrosine kinase signaling: transient versus sustained extracellular signal-regulated kinase activation. Cell. 1995 Jan 27;80(2):179–185. doi: 10.1016/0092-8674(95)90401-8. [DOI] [PubMed] [Google Scholar]
  22. Melnick M. B., Perkins L. A., Lee M., Ambrosio L., Perrimon N. Developmental and molecular characterization of mutations in the Drosophila-raf serine/threonine protein kinase. Development. 1993 May;118(1):127–138. doi: 10.1242/dev.118.1.127. [DOI] [PubMed] [Google Scholar]
  23. Nishida Y., Hata M., Ayaki T., Ryo H., Yamagata M., Shimizu K., Nishizuka Y. Proliferation of both somatic and germ cells is affected in the Drosophila mutants of raf proto-oncogene. EMBO J. 1988 Mar;7(3):775–781. doi: 10.1002/j.1460-2075.1988.tb02875.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  24. O'Neill E. M., Rebay I., Tjian R., Rubin G. M. The activities of two Ets-related transcription factors required for Drosophila eye development are modulated by the Ras/MAPK pathway. Cell. 1994 Jul 15;78(1):137–147. doi: 10.1016/0092-8674(94)90580-0. [DOI] [PubMed] [Google Scholar]
  25. Olivier J. P., Raabe T., Henkemeyer M., Dickson B., Mbamalu G., Margolis B., Schlessinger J., Hafen E., Pawson T. A Drosophila SH2-SH3 adaptor protein implicated in coupling the sevenless tyrosine kinase to an activator of Ras guanine nucleotide exchange, Sos. Cell. 1993 Apr 9;73(1):179–191. doi: 10.1016/0092-8674(93)90170-u. [DOI] [PubMed] [Google Scholar]
  26. Rebay I., Rubin G. M. Yan functions as a general inhibitor of differentiation and is negatively regulated by activation of the Ras1/MAPK pathway. Cell. 1995 Jun 16;81(6):857–866. doi: 10.1016/0092-8674(95)90006-3. [DOI] [PubMed] [Google Scholar]
  27. Simon M. A., Bowtell D. D., Dodson G. S., Laverty T. R., Rubin G. M. Ras1 and a putative guanine nucleotide exchange factor perform crucial steps in signaling by the sevenless protein tyrosine kinase. Cell. 1991 Nov 15;67(4):701–716. doi: 10.1016/0092-8674(91)90065-7. [DOI] [PubMed] [Google Scholar]
  28. Simon M. A., Dodson G. S., Rubin G. M. An SH3-SH2-SH3 protein is required for p21Ras1 activation and binds to sevenless and Sos proteins in vitro. Cell. 1993 Apr 9;73(1):169–177. doi: 10.1016/0092-8674(93)90169-q. [DOI] [PubMed] [Google Scholar]
  29. Sprenger F., Nüsslein-Volhard C. Torso receptor activity is regulated by a diffusible ligand produced at the extracellular terminal regions of the Drosophila egg. Cell. 1992 Dec 11;71(6):987–1001. doi: 10.1016/0092-8674(92)90394-r. [DOI] [PubMed] [Google Scholar]
  30. Stancato L. F., Chow Y. H., Hutchison K. A., Perdew G. H., Jove R., Pratt W. B. Raf exists in a native heterocomplex with hsp90 and p50 that can be reconstituted in a cell-free system. J Biol Chem. 1993 Oct 15;268(29):21711–21716. [PubMed] [Google Scholar]
  31. Stancato L. F., Chow Y. H., Owens-Grillo J. K., Yem A. W., Deibel M. R., Jr, Jove R., Pratt W. B. The native v-Raf.hsp90.p50 heterocomplex contains a novel immunophilin of the FK506 binding class. J Biol Chem. 1994 Sep 2;269(35):22157–22161. [PubMed] [Google Scholar]
  32. Stanton V. P., Jr, Nichols D. W., Laudano A. P., Cooper G. M. Definition of the human raf amino-terminal regulatory region by deletion mutagenesis. Mol Cell Biol. 1989 Feb;9(2):639–647. doi: 10.1128/mcb.9.2.639. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Stokoe D., Macdonald S. G., Cadwallader K., Symons M., Hancock J. F. Activation of Raf as a result of recruitment to the plasma membrane. Science. 1994 Jun 3;264(5164):1463–1467. doi: 10.1126/science.7811320. [DOI] [PubMed] [Google Scholar]
  34. Tei H., Nihonmatsu I., Yokokura T., Ueda R., Sano Y., Okuda T., Sato K., Hirata K., Fujita S. C., Yamamoto D. pokkuri, a Drosophila gene encoding an E-26-specific (Ets) domain protein, prevents overproduction of the R7 photoreceptor. Proc Natl Acad Sci U S A. 1992 Aug 1;89(15):6856–6860. doi: 10.1073/pnas.89.15.6856. [DOI] [PMC free article] [PubMed] [Google Scholar]
  35. Tsuda L., Inoue Y. H., Yoo M. A., Mizuno M., Hata M., Lim Y. M., Adachi-Yamada T., Ryo H., Masamune Y., Nishida Y. A protein kinase similar to MAP kinase activator acts downstream of the raf kinase in Drosophila. Cell. 1993 Feb 12;72(3):407–414. doi: 10.1016/0092-8674(93)90117-9. [DOI] [PubMed] [Google Scholar]
  36. Xu T., Rubin G. M. Analysis of genetic mosaics in developing and adult Drosophila tissues. Development. 1993 Apr;117(4):1223–1237. doi: 10.1242/dev.117.4.1223. [DOI] [PubMed] [Google Scholar]

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