Use of whole cosmid cloned genomic sequences for chromosomal localization by non-radioactive in situ hybridization (original) (raw)

Summary

We report a general procedure which allows the application of whole cosmid cloned genomic sequences for non-radioactive in situ hybridization. The presence of highly repetitive sequences, like Alu and Kpn fragments, is eliminated through competition hybridization with Cot-1 DNA. The method has been tested and optimized with several randomly chosen cosmids of the human thyroglobulin (Tg) gene (8q24). At present, the procedure can be performed with three of the four tested individual cosmids. In cases where a single clone does not result in a specific signal, a larger fragment may be required, which can be accomplished by using two (partially overlapping) cosmids of the same region. The advantages and further potentialities of such a hybridization approach are discussed.

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  1. J. E. Landegent
    Present address: Biomedical Sciences Division, Lawrence Livermore National Laboratory, P.O. Box 5507, 94550, Livermore, CA, USA
  2. R. W. Dirks
    Present address: Department of Biochemistry and Molecular Biology, Harvard University, 7 Divinity Avenue, 02138, Cambridge, MA, USA

Authors and Affiliations

  1. Department of Cytochemistry and Cytometry, Sylvius Laboratories, University of Leiden, P.O. Box 9503, NL-2333 AL, Leiden, The Netherlands
    J. E. Landegent, N. Jansen in de Wal, R. W. Dirks & M. van der Ploeg
  2. Division of Molecular Biology, The Netherlands Cancer Institute (Antonie van Leeuwenhoekhuis), Plesmanlaan 121, NL-1066 CX, Amsterdam, The Netherlands
    R. W. Dirks

Authors

  1. J. E. Landegent
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  2. N. Jansen in de Wal
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  3. R. W. Dirks
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  4. M. van der Ploeg
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Landegent, J.E., Jansen in de Wal, N., Dirks, R.W. et al. Use of whole cosmid cloned genomic sequences for chromosomal localization by non-radioactive in situ hybridization.Hum Genet 77, 366–370 (1987). https://doi.org/10.1007/BF00291428

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