Dataset Information

Proteomic Analysis of the Response to Cell Cycle Arrests in Human Myeloid Leukemia Cells

ABSTRACT: Previously (Ly et al. 2014), we analyzed protein abundance changes across a â€˜minimally perturbedâ€™ cell cycle in human cells (NB4), using centrifugal elutriation to differentially enrich distinct cell cycle phases. Here, we compare data from elutriated cells with NB4 cells arrested at comparable phases using serum starvation, hydroxyurea, or RO-3306. While elutriated and arrested cells have similar patterns of DNA content and cyclin expression, a large fraction of the proteome changes detected in arrested cells are found to reflect arrest-specific responses (i.e., starvation, DNA damage, CDK1 inhibition), rather than physiological cell cycle regulation. For example, we show most cells arrested in G2 by CDK1 inhibition express abnormally high levels of replication and origin licensing factors, and are likely poised for genome re-replication. The protein data are available in the Encyclopedia of Proteome Dynamics (http://www.peptracker.com/epd/), an online, searchable resource.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Leukocyte

DISEASE(S): Acute Leukemia

SUBMITTER: Vackar Afzal

LAB HEAD: Angus Lamond

PROVIDER: PXD001610 | Pride | 2015-07-23

REPOSITORIES: Pride

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Publications

Proteomic analysis of the response to cell cycle arrests in human myeloid leukemia cells.

Ly Tony T Endo Aki A Lamond Angus I AI

eLife 20150102

Previously, we analyzed protein abundance changes across a 'minimally perturbed' cell cycle by using centrifugal elutriation to differentially enrich distinct cell cycle phases in human NB4 cells (Ly et al., 2014). In this study, we compare data from elutriated cells with NB4 cells arrested at comparable phases using serum starvation, hydroxyurea, or RO-3306. While elutriated and arrested cells have similar patterns of DNA content and cyclin expression, a large fraction of the proteome changes d ...[more]

PMID: 25555159

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