Abstract
While providing information at the level of the individual cell, cytogenetic techniques for evaluating DNA damage or repair are, by their very nature, largely limited to proliferating cell populations. Furthermore, these techniques require the processing of DNA damage into microscopically visible lesions. Biochemical techniques, such as alkaline elution and nucleoid sedimentation, circumvent these difficulties in that DNA damage can be evaluated directly in almost any cell population. However, the resulting data do not provide any information about the distribution of damage or repair among individual cells. Since the effects of genotoxic agents are often tissue and cell-type specific, techniques which can directly detect DNA damage in individual cells are needed. Rydberg and Johanson (1978) were the first to directly quantitate DNA damage in individual cells by lysing cells embedded in agarose on slides under mild alkali conditions to allow the partial unwinding of DNA. After neutralization, the cells are stained with acridine orange and the extent of DNA damage quantitated by measuring the ratio of green (indicating double-stranded DNA) to red (indicating single-stranded DNA) fluorescence using a photometer.
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Andrews, P.W., Tice, R.R., Nauman, C.H. (1989) The single cell gel (SCG) assay: A new tool for detecting organ-specific levels of DNA damage induced by genotoxic agents. Environ. Molec. Mutagen. 14(S15): 10.
Ostling, O., and Johanson, K.J. (1984) Microelectrophoretic study of radiation-induced DNA damages in individual mammalian cells. Biochem. Biophys. Res. Commun. 123: 291–298.
Rydberg, B., and Johanson, K.J. (1978) in: DNA Repair Mechanism (Hanawalt, P.C., and Friedberg, E.C., eds) pp 465–468, Academic Press, New York
Singh, N.P., McCoy, M.T., Tice, R.R. and Schneider, E.L. (1988) A simple technique for quantitation of low levels of DNA damage in individual cells. Exp. Cell Res. 175: 184–191.
Singh, N.P., Danner, D.B., Tice, R.R., McCoy, M.T., Collins, G.D., and Schneider, E.L. (1989) Abundant alkali-labile sites in human and mouse sperm DNA. Exp. Cell Res., in press.
Singh, N.P., Danner, D.B., Tice, R.R., Brant, L., and Schneider, E.L. (1990) DNA damage and repair with age in individual human lymphocytes. Mutat. Res., in press.
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© 1990 Plenum Press, New York
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Tice, R.R., Andrews, P.W., Singh, N.P. (1990). The Single Cell Gel Assay: A Sensitive Technique for Evaluating Intercellular Differences in DNA Damage and Repair. In: Sutherland, B.M., Woodhead, A.D. (eds) DNA Damage and Repair in Human Tissues. Basic Life Sciences, vol 53. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0637-5_23
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DOI: https://doi.org/10.1007/978-1-4613-0637-5_23
Publisher Name: Springer, Boston, MA
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