Abstract
The sequencing of DNA by current procedures involves the use of radioisotopic or fluorescent labels. We propose that stable isotopes can be used as such labels and that the large number of stable isotopes available would allow multiplexing so that many DNA segments could be sequenced simultaneously. We have developed methods to use 57Fe2O3 to synthesize ferrocene and to attach the ferrocene to the 5′ end of oligonucleotides. The 57Fe-labeled M13 universal primer functioned normally in a Sanger sequencing procedure. When a 57Fe-labeled oligonucleotide had migrated on a polyacrylamide gel it was readily located on the dried gel by scanning with resonance ionization spectroscopy (RIS) coupled with mass spectrometry. Using a 57Fe-labeled primer in a PCR reaction a 2000-bp DNA was produced that was detected by RIS on nylon membrane after agarose electrophoresis. The rapid analysis features of RIS coupled with the multispectral multiplexing possibilities of stable isotopes should significantly increase the rate of determination of DNA sequences.
Original language | English |
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Pages (from-to) | 51-59 |
Number of pages | 9 |
Journal | Genomics |
Volume | 9 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1991 |
Externally published | Yes |
Funding
This work was supported the Oak Ridge National by the Exploratory Studies Program of Laboratory and by the Office of Health ’ This research was sponsored by the Exploratory Studies Program of the Oak Ridge National Laboratory and the Office of Health and Environmental Research, U.S. Department of Energy, under Contract DE-AC05-84021400 with the Martin Marietta Energy Systems, Inc. The U.S. Government’s right to retain a nonexclusive royalty-free license in and to the copyright covering this paper, for governmental purposes, is acknowledged. ’ To whom correspondence and requests for reprints should be addressed. 3 Present address: Department of Pharmacology, University North Carolina School of Medicine, Chapel Hill, NC 27514.
Funders | Funder number |
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Environmental Research | |
Office of Health and Environmental Research | |
U.S. Department of Energy | DE-AC0584021400, DE-AC-05.89ER80735 |
Office of the National Coordinator for Health Information Technology | |
Oak Ridge National Laboratory |