ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2000
The human autoantigen MCP1 is required during early stages of DNA replication.
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed, 2 citations in OpenAlex.
- Evaluation of the reactivity of sera from patients with systemic lupus erythematosus against the human MCP1.Journal of clinical immunology · 2012Article
- Interactions of MCP1 with components of the replication machinery in mammalian cells.International journal of biological sciences · 2011Article
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Metaphase chromosome protein 1 (MCP1) is a nuclear autoantigen that is associated with condensed chromosomes throughout mitosis. During interphase, this antigen shows a speckle distribution in the nucleus, excluding the nucleolus. Additionally, MCP1 binds tightly to the scaffold/matrix component of nuclei and isolated chromosomes. In order to determine the in-vivo localization of the antigen, we have expressed MCP1 fused to EGFP in tissue culture cells. The results demonstrate that MCP1 is located in the nucleus during interphase and during mitosis associates tightly to condensed chromosomes. Furthermore, microinjection of specific antibody confirms these results. We have used a specific monoclonal antibody (mAb 402) against MCP1 to assess the function of this antigen during cell cycle progression. HeLa and Ptk-2 cells that were microinjected into the nucleus and/or cytoplasm at G1/S and very early S phase were not able to progress and complete DNA replication. However, injection of mAb 402 at mid or late S phase does not prevent completion of DNA replication and subsequent progression into mitosis. Microinjection of mAb 402 in Ptk-2 cells synchronized in mitosis did not interfere with progression of mitosis and cells divided. Our results suggest that MCP1 is required at the G1/S transition and during early S phase.
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Registered trials
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