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Roci I, Watrous JD, Lagerborg KA, Jain M, Nilsson R. Mapping metabolic oscillations during cell cycle progression. Cell Cycle 2020; 19:2676-2684. [PMID: 33016215 PMCID: PMC7644150 DOI: 10.1080/15384101.2020.1825203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Proliferating cells must synthesize a wide variety of macromolecules while progressing through the cell cycle, but the coordination between cell cycle progression and cellular metabolism is still poorly understood. To identify metabolic processes that oscillate over the cell cycle, we performed comprehensive, non-targeted liquid chromatography-high resolution mass spectrometry (LC-HRMS) based metabolomics of HeLa cells isolated in the G1 and SG2M cell cycle phases, capturing thousands of diverse metabolite ions. When accounting for increased total metabolite abundance due to cell growth throughout the cell cycle, 18% of the observed LC-HRMS peaks were at least twofold different between the stages, consistent with broad metabolic remodeling throughout the cell cycle. While most amino acids, phospholipids, and total ribonucleotides were constant across cell cycle phases, consistent with the view that total macromolecule synthesis does not vary across the cell cycle, certain metabolites were oscillating. For example, ribonucleotides were highly phosphorylated in SG2M, indicating an increase in energy charge, and several phosphatidylinositols were more abundant in G1, possibly indicating altered membrane lipid signaling. Within carbohydrate metabolism, pentose phosphates and methylglyoxal metabolites were associated with the cycle. Interestingly, hundreds of yet uncharacterized metabolites similarly oscillated between cell cycle phases, suggesting previously unknown metabolic activities that may be synchronized with cell cycle progression, providing an important resource for future studies.
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Affiliation(s)
- Irena Roci
- Cardiovascular Medicine Unit, Department of Medicine, Karolinska Institutet , Stockholm, Sweden.,Division of Cardiovascular Medicine, Karolinska University Hospital , Stockholm, Sweden.,Center for Molecular Medicine, Karolinska Institutet , Stockholm, Sweden
| | - Jeramie D Watrous
- , Department of Medicine & Pharmacology University of California, San Diego , La Jolla, CA, USA
| | - Kim A Lagerborg
- , Department of Medicine & Pharmacology University of California, San Diego , La Jolla, CA, USA
| | - Mohit Jain
- , Department of Medicine & Pharmacology University of California, San Diego , La Jolla, CA, USA
| | - Roland Nilsson
- Cardiovascular Medicine Unit, Department of Medicine, Karolinska Institutet , Stockholm, Sweden.,Division of Cardiovascular Medicine, Karolinska University Hospital , Stockholm, Sweden.,Center for Molecular Medicine, Karolinska Institutet , Stockholm, Sweden
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Taxol-induced alteration of intracellular amino-acid profile related to human cervical carcinoma HeLa cell death. Biotechnol Lett 2011; 34:1-7. [DOI: 10.1007/s10529-011-0730-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Accepted: 08/24/2011] [Indexed: 10/17/2022]
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Long-term temozolomide treatment induces marked amino metabolism modifications and an increase in TMZ sensitivity in Hs683 oligodendroglioma cells. Neoplasia 2010; 12:69-79. [PMID: 20072655 DOI: 10.1593/neo.91360] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 09/20/2009] [Accepted: 09/22/2009] [Indexed: 12/17/2022] Open
Abstract
Gliomas account for more than 50% of all primary brain tumors. The worst prognosis is associated with gliomas of astrocytic origin, whereas gliomas with an oligodendroglial origin offer higher sensitivity to chemotherapy, especially when oligodendroglioma cells display 1p19q deletions. Temozolomide (TMZ) provides therapeutic benefits and is commonly used with radiotherapy in highly malignant astrocytic tumors, including glioblastomas. The actual benefits of TMZ during long-term treatment in oligodendroglioma patients have not yet been clearly defined. In this study, we have investigated the effects of such a long-term TMZ treatment in the unique Hs683 oligodendroglioma model. We have observed increased TMZ sensitivity of Hs683 orthotopic tumors that were previously treated in vitro with months of progressive exposure to increasing TMZ concentrations before being xenografted into the brains of immunocompromised mice. Whole-genome and proteomic analyses have revealed that this increased TMZ sensitivity of Hs683 oligodendroglioma cells previously treated for long periods with TMZ can be explained, at least partly, by a TMZ-induced p38-dependant dormancy state, which in turn resulted in changes in amino acid metabolism balance, in growth delay, and in a decrease in Hs683 oligodendroglioma cell-invasive properties. Thus, long-term TMZ treatment seems beneficial in this Hs683 oligodendroglioma model, which revealed itself unable to develop resistance against TMZ.
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