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. 1990 Sep 25;18(18):5365–5373. doi: 10.1093/nar/18.18.5365

Uridine branch acceptor is a cis-acting element involved in regulation of the alternative processing of calcitonin/CGRP-l pre-mRNA.

G J Adema 1, K L van Hulst 1, P D Baas 1
PMCID: PMC332211  PMID: 2216708

Abstract

The human calcitonin/CGRP-I (CALC-I) gene contains 6 exons and encodes two polypeptide precursors. In thyroid C-cells, calcitonin (CT) mRNA is produced by splicing of exons 1-2-3 to exon 4 (CT-encoding) and polyadenylation at exon 4. CGRP-I mRNA is produced in particular neural cells by splicing of exons 1-2-3 to exon 5 (CGRP-I-encoding) and the polyadenylated exon 6. We previously reported that model precursor RNAs containing the exon 3 to exon 5 region of the CALC-I gene are processed predominantly into CGRP-I mRNA in vitro, in nuclear extracts of several cell types (neural and non-neural). Using truncated precursor RNAs containing only the exon 3 to exon 4 region of the CALC-I gene it was shown that CT splicing is an inefficient reaction in which a uridine residue serves as the major site of lariat formation. Here we report that the low CT splicing efficiency and the dominance of CGRP-I splicing over CT splicing in vitro are primarily due to the usage of the CT-specific uridine branch acceptor. Mutation of this uridine residue into an adenosine residue resulted in a strong increase in CT splicing efficiency causing a reversal of the splicing pattern. In addition, it was shown that this point mutation also increased CT splicing efficiency in vivo. These results and data obtained from other experiments involving mutation of the CT splice acceptor site suggest that the uridine branch acceptor is a cis-acting element involved in regulation of the alternative processing of the CALC-I pre-mRNA.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Adema G. J., Bovenberg R. A., Jansz H. S., Baas P. D. Unusual branch point selection involved in splicing of the alternatively processed Calcitonin/CGRP-I pre-mRNA. Nucleic Acids Res. 1988 Oct 25;16(20):9513–9526. doi: 10.1093/nar/16.20.9513. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Amara S. G., Evans R. M., Rosenfeld M. G. Calcitonin/calcitonin gene-related peptide transcription unit: tissue-specific expression involves selective use of alternative polyadenylation sites. Mol Cell Biol. 1984 Oct;4(10):2151–2160. doi: 10.1128/mcb.4.10.2151. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Baker B. S. Sex in flies: the splice of life. Nature. 1989 Aug 17;340(6234):521–524. doi: 10.1038/340521a0. [DOI] [PubMed] [Google Scholar]
  4. Black D. L., Chabot B., Steitz J. A. U2 as well as U1 small nuclear ribonucleoproteins are involved in premessenger RNA splicing. Cell. 1985 Oct;42(3):737–750. doi: 10.1016/0092-8674(85)90270-3. [DOI] [PubMed] [Google Scholar]
  5. Bovenberg R. A., Adema G. J., Jansz H. S., Baas P. D. Model for tissue specific Calcitonin/CGRP-I RNA processing from in vitro experiments. Nucleic Acids Res. 1988 Aug 25;16(16):7867–7883. doi: 10.1093/nar/16.16.7867. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Bovenberg R. A., Moen T. C., Jansz H. S., Baas P. D. In vitro splicing analysis of mini-gene constructs of the alternatively processed human calcitonin/CGRP-I pre-mRNA. Biochim Biophys Acta. 1989 Jul 7;1008(2):223–233. doi: 10.1016/0167-4781(80)90013-5. [DOI] [PubMed] [Google Scholar]
  7. Bovenberg R. A., van de Meerendonk W. P., Baas P. D., Steenbergh P. H., Lips C. J., Jansz H. S. Model for alternative RNA processing in human calcitonin gene expression. Nucleic Acids Res. 1986 Nov 25;14(22):8785–8803. doi: 10.1093/nar/14.22.8785. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Brody E., Abelson J. The "spliceosome": yeast pre-messenger RNA associates with a 40S complex in a splicing-dependent reaction. Science. 1985 May 24;228(4702):963–967. doi: 10.1126/science.3890181. [DOI] [PubMed] [Google Scholar]
  9. Chabot B., Steitz J. A. Multiple interactions between the splicing substrate and small nuclear ribonucleoproteins in spliceosomes. Mol Cell Biol. 1987 Jan;7(1):281–293. doi: 10.1128/mcb.7.1.281. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Chirgwin J. M., Przybyla A. E., MacDonald R. J., Rutter W. J. Isolation of biologically active ribonucleic acid from sources enriched in ribonuclease. Biochemistry. 1979 Nov 27;18(24):5294–5299. doi: 10.1021/bi00591a005. [DOI] [PubMed] [Google Scholar]
  11. Crenshaw E. B., 3rd, Russo A. F., Swanson L. W., Rosenfeld M. G. Neuron-specific alternative RNA processing in transgenic mice expressing a metallothionein-calcitonin fusion gene. Cell. 1987 May 8;49(3):389–398. doi: 10.1016/0092-8674(87)90291-1. [DOI] [PubMed] [Google Scholar]
  12. Dignam J. D., Lebovitz R. M., Roeder R. G. Accurate transcription initiation by RNA polymerase II in a soluble extract from isolated mammalian nuclei. Nucleic Acids Res. 1983 Mar 11;11(5):1475–1489. doi: 10.1093/nar/11.5.1475. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Domdey H., Apostol B., Lin R. J., Newman A., Brody E., Abelson J. Lariat structures are in vivo intermediates in yeast pre-mRNA splicing. Cell. 1984 Dec;39(3 Pt 2):611–621. doi: 10.1016/0092-8674(84)90468-9. [DOI] [PubMed] [Google Scholar]
  14. Edbrooke M. R., Parker D., McVey J. H., Riley J. H., Sorenson G. D., Pettengill O. S., Craig R. K. Expression of the human calcitonin/CGRP gene in lung and thyroid carcinoma. EMBO J. 1985 Mar;4(3):715–724. doi: 10.1002/j.1460-2075.1985.tb03688.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Emeson R. B., Hedjran F., Yeakley J. M., Guise J. W., Rosenfeld M. G. Alternative production of calcitonin and CGRP mRNA is regulated at the calcitonin-specific splice acceptor. Nature. 1989 Sep 7;341(6237):76–80. doi: 10.1038/341076a0. [DOI] [PubMed] [Google Scholar]
  16. Fu X. Y., Ge H., Manley J. L. The role of the polypyrimidine stretch at the SV40 early pre-mRNA 3' splice site in alternative splicing. EMBO J. 1988 Mar;7(3):809–817. doi: 10.1002/j.1460-2075.1988.tb02879.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Gattoni R., Schmitt P., Stevenin J. In vitro splicing of adenovirus E1A transcripts: characterization of novel reactions and of multiple branch points abnormally far from the 3' splice site. Nucleic Acids Res. 1988 Mar 25;16(6):2389–2409. doi: 10.1093/nar/16.6.2389. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Gorman C. M., Merlino G. T., Willingham M. C., Pastan I., Howard B. H. The Rous sarcoma virus long terminal repeat is a strong promoter when introduced into a variety of eukaryotic cells by DNA-mediated transfection. Proc Natl Acad Sci U S A. 1982 Nov;79(22):6777–6781. doi: 10.1073/pnas.79.22.6777. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Grabowski P. J., Seiler S. R., Sharp P. A. A multicomponent complex is involved in the splicing of messenger RNA precursors. Cell. 1985 Aug;42(1):345–353. doi: 10.1016/s0092-8674(85)80130-6. [DOI] [PubMed] [Google Scholar]
  20. Graham F. L., van der Eb A. J. A new technique for the assay of infectivity of human adenovirus 5 DNA. Virology. 1973 Apr;52(2):456–467. doi: 10.1016/0042-6822(73)90341-3. [DOI] [PubMed] [Google Scholar]
  21. Green M. R. Pre-mRNA splicing. Annu Rev Genet. 1986;20:671–708. doi: 10.1146/annurev.ge.20.120186.003323. [DOI] [PubMed] [Google Scholar]
  22. Hartmuth K., Barta A. Unusual branch point selection in processing of human growth hormone pre-mRNA. Mol Cell Biol. 1988 May;8(5):2011–2020. doi: 10.1128/mcb.8.5.2011. [DOI] [PMC free article] [PubMed] [Google Scholar]
  23. Hornig H., Aebi M., Weissmann C. Effect of mutations at the lariat branch acceptor site on beta-globin pre-mRNA splicing in vitro. Nature. 1986 Dec 11;324(6097):589–591. doi: 10.1038/324589a0. [DOI] [PubMed] [Google Scholar]
  24. Krainer A. R., Maniatis T., Ruskin B., Green M. R. Normal and mutant human beta-globin pre-mRNAs are faithfully and efficiently spliced in vitro. Cell. 1984 Apr;36(4):993–1005. doi: 10.1016/0092-8674(84)90049-7. [DOI] [PubMed] [Google Scholar]
  25. Langford C. J., Klinz F. J., Donath C., Gallwitz D. Point mutations identify the conserved, intron-contained TACTAAC box as an essential splicing signal sequence in yeast. Cell. 1984 Mar;36(3):645–653. doi: 10.1016/0092-8674(84)90344-1. [DOI] [PubMed] [Google Scholar]
  26. Leff S. E., Evans R. M., Rosenfeld M. G. Splice commitment dictates neuron-specific alternative RNA processing in calcitonin/CGRP gene expression. Cell. 1987 Feb 13;48(3):517–524. doi: 10.1016/0092-8674(87)90202-9. [DOI] [PubMed] [Google Scholar]
  27. Maniatis T., Reed R. The role of small nuclear ribonucleoprotein particles in pre-mRNA splicing. Nature. 1987 Feb 19;325(6106):673–678. doi: 10.1038/325673a0. [DOI] [PubMed] [Google Scholar]
  28. Maxam A. M., Gilbert W. A new method for sequencing DNA. Proc Natl Acad Sci U S A. 1977 Feb;74(2):560–564. doi: 10.1073/pnas.74.2.560. [DOI] [PMC free article] [PubMed] [Google Scholar]
  29. McMaster G. K., Carmichael G. G. Analysis of single- and double-stranded nucleic acids on polyacrylamide and agarose gels by using glyoxal and acridine orange. Proc Natl Acad Sci U S A. 1977 Nov;74(11):4835–4838. doi: 10.1073/pnas.74.11.4835. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Noble J. C., Prives C., Manley J. L. Alternative splicing of SV40 early pre-mRNA is determined by branch site selection. Genes Dev. 1988 Nov;2(11):1460–1475. doi: 10.1101/gad.2.11.1460. [DOI] [PubMed] [Google Scholar]
  31. Padgett R. A., Grabowski P. J., Konarska M. M., Seiler S., Sharp P. A. Splicing of messenger RNA precursors. Annu Rev Biochem. 1986;55:1119–1150. doi: 10.1146/annurev.bi.55.070186.005351. [DOI] [PubMed] [Google Scholar]
  32. Padgett R. A., Konarska M. M., Aebi M., Hornig H., Weissmann C., Sharp P. A. Nonconsensus branch-site sequences in the in vitro splicing of transcripts of mutant rabbit beta-globin genes. Proc Natl Acad Sci U S A. 1985 Dec;82(24):8349–8353. doi: 10.1073/pnas.82.24.8349. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Rautmann G., Matthes H. W., Gait M. J., Breathnach R. Synthetic donor and acceptor splice sites function in an RNA polymerase B (II) transcription unit. EMBO J. 1984 Sep;3(9):2021–2028. doi: 10.1002/j.1460-2075.1984.tb02085.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  34. Reed R., Maniatis T. Intron sequences involved in lariat formation during pre-mRNA splicing. Cell. 1985 May;41(1):95–105. doi: 10.1016/0092-8674(85)90064-9. [DOI] [PubMed] [Google Scholar]
  35. Reed R., Maniatis T. The role of the mammalian branchpoint sequence in pre-mRNA splicing. Genes Dev. 1988 Oct;2(10):1268–1276. doi: 10.1101/gad.2.10.1268. [DOI] [PubMed] [Google Scholar]
  36. Reed R. The organization of 3' splice-site sequences in mammalian introns. Genes Dev. 1989 Dec;3(12B):2113–2123. doi: 10.1101/gad.3.12b.2113. [DOI] [PubMed] [Google Scholar]
  37. Rodriguez J. R., Pikielny C. W., Rosbash M. In vivo characterization of yeast mRNA processing intermediates. Cell. 1984 Dec;39(3 Pt 2):603–610. doi: 10.1016/0092-8674(84)90467-7. [DOI] [PubMed] [Google Scholar]
  38. Rosenfeld M. G., Mermod J. J., Amara S. G., Swanson L. W., Sawchenko P. E., Rivier J., Vale W. W., Evans R. M. Production of a novel neuropeptide encoded by the calcitonin gene via tissue-specific RNA processing. Nature. 1983 Jul 14;304(5922):129–135. doi: 10.1038/304129a0. [DOI] [PubMed] [Google Scholar]
  39. Ruskin B., Greene J. M., Green M. R. Cryptic branch point activation allows accurate in vitro splicing of human beta-globin intron mutants. Cell. 1985 Jul;41(3):833–844. doi: 10.1016/s0092-8674(85)80064-7. [DOI] [PubMed] [Google Scholar]
  40. Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
  41. Schmitt P., Gattoni R., Keohavong P., Stévenin J. Alternative splicing of E1A transcripts of adenovirus requires appropriate ionic conditions in vitro. Cell. 1987 Jul 3;50(1):31–39. doi: 10.1016/0092-8674(87)90659-3. [DOI] [PubMed] [Google Scholar]
  42. Smith C. W., Patton J. G., Nadal-Ginard B. Alternative splicing in the control of gene expression. Annu Rev Genet. 1989;23:527–577. doi: 10.1146/annurev.ge.23.120189.002523. [DOI] [PubMed] [Google Scholar]
  43. Smith C. W., Porro E. B., Patton J. G., Nadal-Ginard B. Scanning from an independently specified branch point defines the 3' splice site of mammalian introns. Nature. 1989 Nov 16;342(6247):243–247. doi: 10.1038/342243a0. [DOI] [PubMed] [Google Scholar]
  44. Van Heuvel M., Bosveld I. J., Mooren A. A., Trapman J., Zwarthoff E. C. Properties of natural and hybrid murine alpha interferons. J Gen Virol. 1986 Oct;67(Pt 10):2215–2222. doi: 10.1099/0022-1317-67-10-2215. [DOI] [PubMed] [Google Scholar]
  45. Wieringa B., Hofer E., Weissmann C. A minimal intron length but no specific internal sequence is required for splicing the large rabbit beta-globin intron. Cell. 1984 Jul;37(3):915–925. doi: 10.1016/0092-8674(84)90426-4. [DOI] [PubMed] [Google Scholar]
  46. Zeitlin S., Efstratiadis A. In vivo splicing products of the rabbit beta-globin pre-mRNA. Cell. 1984 Dec;39(3 Pt 2):589–602. doi: 10.1016/0092-8674(84)90466-5. [DOI] [PubMed] [Google Scholar]
  47. Zhuang Y. A., Goldstein A. M., Weiner A. M. UACUAAC is the preferred branch site for mammalian mRNA splicing. Proc Natl Acad Sci U S A. 1989 Apr;86(8):2752–2756. doi: 10.1073/pnas.86.8.2752. [DOI] [PMC free article] [PubMed] [Google Scholar]
  48. Zoller M. J., Smith M. Oligonucleotide-directed mutagenesis of DNA fragments cloned into M13 vectors. Methods Enzymol. 1983;100:468–500. doi: 10.1016/0076-6879(83)00074-9. [DOI] [PubMed] [Google Scholar]

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