Abstract
About 20 to 25 percent of the nuclear DNA from cultured cells of the African green monkey, Cercopithecus aethiops, consists of a homogeneous, highly repetitive fraction designated C. aethiops component α DNA. Use of in situ hybridization techniques reveals component α at the centromeres of chromosomes from both diploid and heteroploid African green monkey kidney (AGMK) tissue culture cells. — Component α DNA comprises 47 percent of the nucleolar DNA in actively growing primary AGMK cells, but only 31 percent of the nucleolar DNA in confluent cells which show density-dependent growth inhibition. Further, there is a pronounced shift of both main band and component αDNA from euchromatin to heterochromatin when growing cells attain confluency. Thus, the relative subnuclear distributions of component α and main band DNA's are different in growing and confluent cells. — In situ hybridization techniques indicate that component α sequences aggregate in clumps in nuclei of growing cells and show a diffuse distribution in nuclei of confluent cells. This suggests that centromeric regions of the various chromosomes or groups of chromosomes aggregate and disaggregate reversibly as the culture changes from density-dependent growth inhibition to active cell division. — Hypotonic citrate treatment of primary AGMK cells causes nucleoli of confluent cells to disperse: this dispersion following citrate treatment was not seen in growing AGMK cells or in confluent or growing heteroploid cells. Similarly, this nucleolar dispersion was seen in confluent diploid mouse and human cells but not in growing diploid cells or in confluent or growing heteroploid cells.
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Bianchi, N. O., Ayres, J.: Heterochromatin location on chromosomes of normal and transformed cells from African green monkey (Cercopithecus aethiops). Exp. Cell Res. 68, 253–258 (1971).
Burton, K.: A study of the conditions and mechanism of the diphenylamine reaction for the colorimetric estimation of deoxyribonucleic acid. Biochem. J. 62, 315–323 (1956).
Busch, H., Smetana, K.: The nucleolus, p. 563–564. New York-London: Academic Press 1970.
Flamm, W. G., Walker, P. M. B., McCallum, M.: Some properties of the single strands isolated from the DNA of the nuclear satellite of the mouse (Mus musculus). J. molec. Biol. 40, 423–443 (1969).
Frenster, J. H., Allfrey, V. G., Mirsky, A. E.: Repressed and active chromatin isolated from interphase lymphocytes. Proc. nat. Acad. Sci. (Wash.) 50, 1026–1032 (1963).
Hsu, T. C., Arrighi, F. E.: Distribution of constitutive heterochromatin in mammalian chromosomes. Chromosoma (Berl.) 34, 243–253 (1971).
Hsu, T. C., Arrighi, F. E., Klevecz, R. R., Brinkley, B. R.: The nucleoli in mitotic divisions of mammalian cells in vitro. J. Cell Biol. 26, 539–553 (1965).
Jensen, F. C., Girardi, A. J., Gilden, R. V., Koprowski, H.: Infection of human and simian tissue culture with Rous sarcoma virus. Proc. nat. Acad. Sci. (Wash.) 52, 53–59 (1964).
Jones, K. W., Robertson, P. W.: Localization of reiterated nucleotide sequences in Drosophila and Mouse by in situ Hybridization of Complementary RNA. Chromosoma (Berl.) 31, 331–345 (1970).
Klinger, H. P., Davis, J., Goldhuber, P., Ditta, T.: The effect of in vitro cell density on sex chromatin frequency. Cytogenetics 7, 39–57 (1968).
Levitan, M.: Chromosomal breaks with attachments to the nucleolus. Chromosoma (Berl.) 31, 452–467 (1970).
Lima-de-Faria, A., Jaworska, H.: Late DNA synthesis in heterochromatin. Nature (Lond.) 217, 138–142 (1968).
Maio, J. J.: DNA strand reassociation and polyribonucleotide binding in the African green monkey, Cercopithecus aethiops. J. molec. Biol. 56, 579–595 (1971).
Mattoccia, E., Comings, D. E.: Buoyant density and satellite composition of DNA of mouse heterochromatin. Nature (Lond.) New Biol. 229, 175–176 (1971).
Pardue, M. L., Gall, J. G.: Chromosomal localization of mouse satellite DNA. Science 170, 1356–1358 (1970).
Pederson, T.: Chromatin structure and the cell cycle. Proc. nat. Acad. Sci. (Wash.) 69, 2224–2228 (1972).
Russell, D. H., Levy, C. C., Taylor, R. L.: Increased DNA associated with rat liver nucleoli when isolated with spermidine. Biochem. biophys. Res. Commun. 47, 212–217 (1972).
Schildkraut, C. L., Maio, J. J.: Studies on the intranuclear distribution and properties of mouse satellite DNA. Biochim. biophys. Acta (Amst.) 161, 76–93 (1968).
Sieger, M., Garweg, G., Schwarzacher, H. G.: Constitutive heterochromatin in Microtus agrestis: Binding of Actinomycin-D and transcriptional inactivity. Chromosoma (Berl.) 35, 84–98 (1971).
Tobia, A. M., Brown, E. H., Parker, R. J., Schildkraut, C. L., Maio, J. J.: Replication of African green monkey component α and bulk DNA. Biochim. biophys. Acta (Amst.) 277, 256–268 (1972).
Tobia, A. M., Schildkraut, C. L., Maio, J. J.: Relative time of synthesis of mouse satellite and main band DNA. Biochim. biophys. Acta (Amst.) 246, 258–262 (1971).
Yunis, J. J., Yasmineh, W. G.: Heteroohromatin, satellite DNA, and cell function. Science 174, 1200–1209 (1971).
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Kurnit, D.M., Maio, J.J. Subnuclear redistribution of DNA species in confluent and growing mammalian cells. Chromosoma 42, 23–36 (1973). https://doi.org/10.1007/BF00326328
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DOI: https://doi.org/10.1007/BF00326328