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HPLC-based Assay to Monitor Extracellular Nucleotide/Nucleoside Metabolism in Human Chronic Lymphocytic Leukemia Cells
Published on: July 20, 2016
Ether-linked phosphoglyceride content of human leukemia cells
M C Chabot1, D G Greene, J K Brockschmidt
1Department of Medicine, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, North Carolina 27103.
Cancer Research
|November 15, 1990
Summary
This study reveals altered ether-lipid levels in human leukemia cells, particularly alkyl-linked phosphatidylcholine (PC), impacting myeloid cell differentiation. These findings highlight the role of ether-lipids in leukemia.
Area of Science:
- Biochemistry
- Oncology
- Cell Biology
Background:
- Glycerolipids with ether linkages at the sn-1 position are common in cells.
- Tumors often exhibit altered ether-linked lipid concentrations.
- Human leukemia cell ether-lipid content remains under-examined despite their importance in leukocyte function.
Purpose of the Study:
- To investigate the ether-lipid content in human leukemia cells.
- To compare ether-lipid profiles between leukemic and normal leukocytes.
- To explore the relationship between ether-lipids and cellular differentiation in leukemia.
Main Methods:
- Lipid extraction from leukemia and healthy donor samples.
- Isolation of phospholipid classes and determination of lipid phosphorus.
- Quantitation of subclasses using high-performance liquid chromatography after conversion to diglyceride benzoate derivatives.
Main Results:
- All analyzed leukemic cells showed altered phospholipid composition compared to normal leukocytes.
- Acute myelogenous leukemia (AML) subtypes displayed significant differences in alkyl-linked phosphatidylcholine (PC) percentage and levels.
- Leukemic myeloid cells had markedly lower alkyl-linked PC than normal polymorphonuclear leukocytes, while lymphocytes showed no difference.
Conclusions:
- Ether-linked lipids are significantly altered in human leukemia cells.
- Alkyl-linked PC levels correlate with the degree of cellular differentiation in myeloid leukemia.
- These findings suggest a crucial role for ether-linked lipids in myeloid cell function and differentiation.
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