The sperm nuclear matrix is required for paternal DNA replication. Export

@article{citeulike:1402585, abstract = {The mammalian sperm nucleus provides an excellent model for studying the relationship between the formation of nuclear structure and the initiation of DNA replication. We previously demonstrated that mammalian sperm nuclei contain a nuclear matrix that organizes the DNA into loop domains in a manner similar to that of somatic cells. In this study, we tested the minimal components of the sperm nucleus that are necessary for the formation of the male pronucleus and for the initiation of DNA synthesis. We extracted mouse sperm nuclei with high salt and dithiothreitol to remove the protamines in order to form nuclear halos. These were then treated with either restriction endonucleases to release the DNA not directly associated with the nuclear matrix or with DNAse I to digest all the DNA. The treated sperm nuclei were injected into oocytes, and the paternal pronuclear formation and DNA synthesis was monitored. We found that restriction digested sperm nuclear halos were capable of forming paternal pronuclei and initiating DNA synthesis. However, when isolated mouse sperm DNA or sperm DNA reconstituted with the nuclear matrices were injected into oocytes, no paternal pronuclear formation or DNA synthesis was observed. These data suggest that the in situ nuclear matrix attachment organization of sperm DNA is required for mouse paternal pronuclear DNA synthesis. J. Cell. Biochem. (c) 2007 Wiley-Liss, Inc.}, address = {From the Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii 96822.}, author = {Shaman, Jeffrey A A. and Yamauchi, Yasuhiro and Steven Ward, W}, citeulike-article-id = {1402585}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/jcb.21321}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/17415751}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=17415751}, day = {5}, doi = {10.1002/jcb.21321}, issn = {0730-2312}, journal = {J Cell Biochem}, keywords = {mouse, nuclear\_matrix, paternal\_genome, replication, sperm, spermatozoa}, month = {April}, posted-at = {2007-06-21 15:44:56}, priority = {4}, title = {The sperm nuclear matrix is required for paternal DNA replication.}, url = {http://dx.doi.org/10.1002/jcb.21321}, year = {2007} }

TY - JOUR ID - citeulike:1402585 L3 - citeulike-article-id:1402585 N2 - The mammalian sperm nucleus provides an excellent model for studying the relationship between the formation of nuclear structure and the initiation of DNA replication. We previously demonstrated that mammalian sperm nuclei contain a nuclear matrix that organizes the DNA into loop domains in a manner similar to that of somatic cells. In this study, we tested the minimal components of the sperm nucleus that are necessary for the formation of the male pronucleus and for the initiation of DNA synthesis. We extracted mouse sperm nuclei with high salt and dithiothreitol to remove the protamines in order to form nuclear halos. These were then treated with either restriction endonucleases to release the DNA not directly associated with the nuclear matrix or with DNAse I to digest all the DNA. The treated sperm nuclei were injected into oocytes, and the paternal pronuclear formation and DNA synthesis was monitored. We found that restriction digested sperm nuclear halos were capable of forming paternal pronuclei and initiating DNA synthesis. However, when isolated mouse sperm DNA or sperm DNA reconstituted with the nuclear matrices were injected into oocytes, no paternal pronuclear formation or DNA synthesis was observed. These data suggest that the in situ nuclear matrix attachment organization of sperm DNA is required for mouse paternal pronuclear DNA synthesis. J. Cell. Biochem. (c) 2007 Wiley-Liss, Inc. JF - J Cell Biochem SN - 0730-2312 AD - From the Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii 96822. TI - The sperm nuclear matrix is required for paternal DNA replication. KW - mouse KW - nuclear_matrix KW - paternal_genome KW - replication KW - sperm KW - spermatozoa AU - Shaman, Jeffrey A AU - Yamauchi, Yasuhiro AU - Steven Ward, W PY - 2007/04/05/ UR - http://dx.doi.org/10.1002/jcb.21321 ER -