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Stress responses in yeast cells

ABSTRACT: Proteomes of cytoplasmic particles from S. cerevisiae after oxidative shock (sodium azide)

INSTRUMENT(S):

ORGANISM(S): Saccharomyces Cerevisiae (baker's Yeast)

TISSUE(S): Cell Culture

SUBMITTER: Natalia Demeshkina

LAB HEAD: Adrian R. Ferré-D'Amaré

PROVIDER: PXD053088 | Pride | 2025-08-25

REPOSITORIES: Pride

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			Action	DRS
	ySGCs_1_rich.msf	Msf
	ySGCs_1_rich.raw	Raw
	ySGCs_2_rich.msf	Msf
	ySGCs_2_rich.raw	Raw

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Publications

Large-scale purifications reveal yeast and human stress granule cores are heterogeneous particles with complex transcriptomes and proteomes.

Demeshkina Natalia A NA Ferré-D'Amaré Adrian R AR

Cell reports 20250523 6

Stress granules are a conserved response of eukaryotic cells to environmental insults. These cytoplasmic ribonucleoprotein condensates have hitherto been primarily studied by microscopy, which showed previously that they comprise dense ∼200 nm cores embedded in a diffuse shell. We have developed large-scale purifications of budding yeast and mammalian (HEK293T cell) stress granule cores that do not rely on immunoprecipitation of candidate protein constituents. These unbiased preparations reveal ...[more]

PMID: 40413746

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Stress responses in yeast cells

Project description:Proteomes of cytoplasmic particles from S. cerevisiae after oxidative shock (sodium azide), strain YER165W (PABP1_GFP)

2025-08-25 | PXD053260 | Pride

Heat-induced proteomes in tomato pollen mother cells

Project description:Tomato pollen production and viability is highly vulnerable to higher temperature. Hot summers with temperature reaching above 32°C can disrupt production of viable pollens and fruit set, resulting in yield loss. In recent years, temperature above 35-38oC has become a norm during mid-summer with potential adverse impacts on the production of tomatoes and many other crop species. Pollens are developed through the microsporogenesis and micro-gametogenesis stages. The most heat sensitive period is from the meiotic process of the microsporocytes, at the young microspore stage (uninucleate stage of microspore) to during late pollen development (pollen mitosis). This project studied the heat-induced proteomes in microsporocyte, also called pollen mother cells (PMC). Homogenous PMC samples were collected from cross-sectioned frozen fresh anther tissues of tomato ‘Maxifort’ using laser capture microdissection (LCM). Tandem mass tag (TMT) proteomics analysis was conducted to identify proteomics changes related to heat tolerance during pollen development.

2022-04-07 | PXD018915 | Pride

Proteomics studies of outer and inner cellular layers of tomato root-tips for Al stress

Project description:Excess levels of Al3+ become highly harmful to plant roots. The epidermal and outer cortical layers of root-tips experience more severe damages than the inner tissues from Al toxicity. This project used laser capture microdissection (LCM) technology to isolate the outer and inner cell layers of cells in root-tips. Tomato "MicroTom" plants were grown in hydroponic solution supplemented with Al. Seeds derived from plants previously exposed to four generations of Al-treated solutions were considered stress-acclimated, these seeds were named G4Al+. Seeds harvested from soil-grown plants were also used, these seeds were named G0 seeds. Tandem mass tag (TMT) proteomics was used to identify differential proteomics responses among cells localized at different spaces in root-tips and those between the stress-acclimated and non-acclimated plants.

2022-02-14 | PXD021994 | Pride

19Jan2018_Suping_LCM_TomatoHeatPollen_protein only

Project description:Heat stress is a major challenge for crop production. During the reproduction stage, pollen development is the most sensitive process to abnormal environmental conditions. In this project, we have developed a heat treatment system for tomato where plants produce a significantly lower number of pollens and the germination rate of those pollens was also very low. The size of the flower buds and pollen developmental stages were examined under confocal microscope. Pollen cells at different developmental stages were collected from flower buds at corresponding sizes using LCM. The single cell population proteomics analysis was used to identify proteome changes in a distinct group of cells. This information was used to determine the function of proteins that are associated with heat stress on cellular processes/functions during pollen development.

2022-02-23 | PXD010218 | Pride

LCM-quantitative proteomics analysis of Al-sensitive tomato root cells

Project description:Aluminum toxicity in acid soil is a major stress to plant growth. The primary target is in root-tips where the epidermal and outer cortex layers of cells in the root transition zone area are more sensitive to the toxic ions. This project used laser capture microdissection (LCM) technology to isolate these Al-sensitive cells. Tandem mass tag (TMT) proteomics was used to identify Al- induced proteomes. The information was used to determine functions of protein changes in response to Al toxicity in these Al-sensitive root cells.

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Dynamic changes in proteome and phosphoproteome following glutamate excitotoxicity in cultured primary cortical neurons

Project description:Excitotoxicity caused by over-stimulation of the ionotropic glutamate receptors is a key neuronal cell death process underpinning brain damage in acute and chronic neurological disorders such as ischaemic stroke, traumatic brain injury, and neurodegenerative diseases. Exactly how neurons die in excitotoxicity still remains unclear and is an important area of research in the field of neuroscience. In this current project we wanted to explore the global changes in proteome and phosphoproteome following glutamate excitotoxicity in cultured primary cortical neurons.

2019-03-07 | PXD008353 | Pride

Heat stress induced proteomes in tomato pollen mother cells and microspores

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2025-05-07 | PXD060801 | Pride

Transcription profiling of human mesenchymal stem cell-derived osteoblasts following RNAi knock down of phosphodiesterase 7 and 8A

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Project description:Viruses manipulate host cells to enhance their replication, and the identification of host factors targeted by viruses has led to key insights in both viral pathogenesis and cellular physiology. We previously described global changes in cellular protein levels during human immunodeficiency virus (HIV) infection using transformed CEM-T4 T cells as a model. In this study, we develop an HIV reporter virus displaying a streptavidin-binding affinity tag at the surface of infected cells, allowing facile one-step selection with streptavidin-conjugated magnetic beads. We use this system to obtain pure populations of HIV-infected primary human CD4+ T cells for detailed proteomic analysis, including quantitation of >9,000 proteins across 4 different donors, and temporal profiling during T cell activation. Remarkably, amongst 650 cellular proteins significantly perturbed during HIV infection of primary T cells (q<0.05), almost 50% are regulated directly or indirectly by the viral accessory proteins Vpr, Vif, Nef and Vpu. The remainder have not been previously characterised, but include novel Vif-dependent targets FMR1 and DPH7, and 192 targets not identified and/or regulated in T cell lines, such as AIRD5A and PTPN22. We therefore provide a high-coverage functional proteomic atlas of HIV infection, and a mechanistic account of HIV-dependent changes in its natural target cell.

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