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Updated: May 2, 2026
06:21
Assessment of the Metabolic Profile of Primary Leukemia Cells
Published on: November 21, 2018
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The transcriptome of acute dehydration in myeloid leukemic cells
David B Mark Welch1, Travis J Gould2, Ada L Olins3
1Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole MA, USA.
Postepy Biochemii
|July 17, 2024
Summary
Hyperosmotic stress causes human leukemia cells to dehydrate and shrink. Transcriptome analysis reveals cellular rebuilding responses, but these are futile as cells face death.
Area of Science:
- Cell Biology
- Molecular Biology
- Genomics
Background:
- Hyperosmotic stress induces cell dehydration and shrinkage.
- Chromatin and chromosome structure are altered by osmotic stress.
- Understanding cellular responses to osmotic stress is crucial.
Purpose of the Study:
- To investigate the transcriptomic changes in human myeloid leukemia cells (HL-60/S4) under hyperosmotic stress.
- To identify differentially expressed genes and associated Gene Ontology (GO) terms.
- To elucidate the cellular response mechanisms to severe dehydration.
Main Methods:
- Exposure of HL-60/S4 cells to hyperosmotic sucrose stress (~600 mOsmol).
- RNA sequencing (RNA-Seq) of polyadenylated messenger RNA (mRNA).
- Differential gene expression analysis and Gene Ontology (GO) term enrichment analysis.
Main Results:
- Genes with increased transcript levels were enriched for terms related to transcription, translation, mitochondrial function, proteasome activity, and histones.
- Genes with decreased transcript levels were enriched for transcription repressors.
- Transcriptome profiles suggest a cellular rebuilding response.
Conclusions:
- Hyperosmotic stress triggers significant transcriptomic alterations in leukemia cells.
- The observed gene expression changes indicate a cellular attempt at homeostatic repair.
- This rebuilding response is ultimately futile, leading to cell death due to dehydration.
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