NDLI: Lamins A and C are present in the nuclei of early porcine embryos, with lamin A being distributed in large intranuclear foci

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Chromosome Research : Volume 15, Issue 1, January 2007

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Lamins A and C are present in the nuclei of early porcine embryos, with lamin A being distributed in large intranuclear foci

Content Provider	Springer Nature Link
Author	Foster, Helen A. Stokes, Paula Forsey, Katherine Leese, Henry J. Bridger, Joanna M.
Copyright Year	2007
Abstract	Gametogenesis and embryogenesis are dynamic developmental stages marked by extensive modifications in the organization of the genome and nuclear architecture. In the literature it is conveyed that only B-type lamins are required in these early stages of development and that A-type lamins are not present or required until differentiation of specific cell types associated with specialized tissue is initiated. To assess the presence of nuclear structures that are putatively involved in genome regulation, we investigated the distribution of lamin proteins throughout the early stages of porcine embryonic development, using testes tissue sections, oocytes and in-vitro fertilized (IVF) porcine embryos and employing anti-lamin antibodies. We have shown that anti-lamin A staining is present at the one-cell, two-cell, four-cell, and six- to eight-cell stages of early porcine embryo development, but diminishes at the morulae and blastocyst stages. Large intranuclear anti-lamin A foci are prominent in the early preimplantation stages. Both anti-lamin A/C and anti-lamin B staining were clearly present in all embryonic stages. Immature porcine oocytes revealed lamin rings using the monoclonal anti-lamin A/C antibody and many immature oocytes exhibited a pale rim staining pattern with anti-lamin A antibody. A-type lamins were not observed in sperm precursor cells. Thus, we have shown that A-type lamins and B-type lamins are present at the nuclear envelope in very early porcine embryos and that lamin A is also found in large intranuclear aggregates in two-cell to eight-cell embryos but is lacking from later embryonic stages.
Starting Page	163
Ending Page	174
Page Count	12
File Format	PDF
Journal	Chromosome Research
Volume Number	15
Issue Number	2
e-ISSN	15736849
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-01-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	embryogenesis lamin nuclear organization oogenesis spermatogenesis Cell Biology Human Genetics Animal Genetics and Genomics Plant Genetics & Genomics
Content Type	Text
Resource Type	Article

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Lamins A and C are present in the nuclei of early porcine embryos, with lamin A being distributed in large intranuclear foci

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