ArticleBMC genomics2011
Ploidy influences cellular responses to gross chromosomal rearrangements in Saccharomyces cerevisiae.
Article in BMC genomics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 17 citations in OpenAlex.
- Coherent confocal light scattering spectroscopic microscopy evaluates cancer progression and aggressiveness in live cells and tissue.ACS photonics · 2021Article
- Ploidy Variation in Fungi: Polyploidy, Aneuploidy, and Genome Evolution.Microbiology spectrum · 2017Review
- Genome Sequencing and Comparative Analysis of Saccharomyces cerevisiae Strains of the Peterhof Genetic Collection.PloS one · 2016Article
- Genome-wide construction of a series of designed segmental aneuploids in Saccharomyces cerevisiae.Scientific reports · 2015Article
- Article
- Improving bgl1 gene expression in Saccharomyces cerevisiae through meiosis in an isogenic triploid.Biotechnology letters · 2014Article
- Ancient evolutionary trade-offs between yeast ploidy states.PLoS genetics · 2013Article
- New insights into the troubles of aneuploidy.Annual review of cell and developmental biology · 2012Review
- Abundant gene-by-environment interactions in gene expression reaction norms to copper within Saccharomyces cerevisiae.Genome biology and evolution · 2012Article
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Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundGross chromosomal rearrangements (GCRs) such as aneuploidy are key factors in genome evolution as well as being common features of human cancer. Their role in tumour initiation and progression has not yet been completely elucidated and the effects of additional chromosomes in cancer cells are still unknown. Most previous studies in which Saccharomyces cerevisiae has been used as a model for cancer cells have been carried out in the haploid context. To obtain new insights on the role of ploidy, the cellular effects of GCRs were compared between the haploid and diploid contexts.
resultsA total number of 21 haploid and diploid S. cerevisiae strains carrying various types of GCRs (aneuploidies, nonreciprocal translocations, segmental duplications and deletions) were studied with a view to determining the effects of ploidy on the cellular responses. Differences in colony and cell morphology as well as in the growth rates were observed between mutant and parental strains. These results suggest that cells are impaired physiologically in both contexts. We also investigated the variation in genomic expression in all the mutants. We observed that gene expression was significantly altered. The data obtained here clearly show that genes involved in energy metabolism, especially in the tricarboxylic acid cycle, are up-regulated in all these mutants. However, the genes involved in the composition of the ribosome or in RNA processing are down-regulated in diploids but up-regulated in haploids. Over-expression of genes involved in the regulation of the proteasome was found to occur only in haploid mutants.
conclusionThe present comparisons between the cellular responses of strains carrying GCRs in different ploidy contexts bring to light two main findings. First, GCRs induce a general stress response in all studied mutants, regardless of their ploidy. Secondly, the ploidy context plays a crucial role in maintaining the stoichiometric balance of the proteins: the translation rates decrease in diploid strains, whereas the excess protein synthesized is degraded in haploids by proteasome activity.
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