Abstract
Cancerogenesis is associated with cell membrane changes. The aim of this study was to investigate whether breast tissues with different degrees of cancer involvement have different fatty acid profiles. Fourteen breast cancer patients with a mean age of 61 years were recruited. Morphological features of the tumoral specimens were characterized. Approximately 60 % of patients had invasive ductal carcinoma, and 80 % were ER positive; 65 % were PR positive; and 65 % were HER2 negative. The segments with confirmed cancer had significantly less amounts of total lipids as compared with the corresponding grossly normal or interface tissues. The fatty acid profile in cancer tissue was significantly different from that in other tissues. Fatty acid composition of five classes of phospholipids revealed the variations between cancer tissue and the other two segments. A transition of changes in fatty acid composition in these fractions of phospholipids was observed. The interface tissue had intermediate amounts of several fatty acids including palmitic acid, stearic acid, and arachidonic acid. Interestingly, we observed significantly higher amounts of the n-3 fatty acid DHA in cancer tissue as compared to the other two tissues. Data from this study will provide evidence that biochemical changes particularly phospholipid composition may take place well in advance prior to morphological changes. Should this theory be confirmed by larger studies, deviation of phospholipid composition from normal values can be used as markers of susceptibility of tissue to cancer development.
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Abbreviations
- DHA:
-
Docosahexaenoic acid
- FFQ:
-
Food frequency questionnaire
- PC:
-
Phosphatidylcholine
- PE:
-
Phosphatidylethanolamine
- PI:
-
Phosphatidylinositol
- PS:
-
Phosphatidylserine
- PUFA:
-
Polyunsaturated fatty acids
- TLC:
-
Thin-layer chromatography
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Acknowledgments
This work was supported by a grant from Manitoba Medical Services Foundation to GF and MHM. NA was a recipient of a graduate student award from Manitoba Health Research Council.
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Azordegan, N., Fraser, V., Le, K. et al. Carcinogenesis alters fatty acid profile in breast tissue. Mol Cell Biochem 374, 223–232 (2013). https://doi.org/10.1007/s11010-012-1523-4
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DOI: https://doi.org/10.1007/s11010-012-1523-4