Abstract
Type 2 diabetes mellitus (T2DM) adversely affects the essential characteristics of adipose tissue-derived mesenchymal stem cells (AdMSCs). Given that T2DM is associated with an altered serum free fatty acid (FFA) profile, we examined whether diabetic serum FFAs influence the viability, differentiation, and fatty acid composition of the major lipid fractions of human AdMSCs in vitro. Serum FFAs were isolated from 7 diabetic and 10 healthy nondiabetic female individuals. AdMSCs were cultured and differentiated into primordial germ cell-like cells (PGCLCs) in the presence of either diabetic or nondiabetic FFAs. Cell viability was assessed using trypan blue staining. Cell differentiation was evaluated by measuring the PGCLC transcriptional markers Blimp1 and Stella. Lipid fractionation and fatty acid quantification were performed using thin-layer chromatography and gas–liquid chromatography, respectively. Both diabetic and nondiabetic FFAs significantly reduced the viability of PGCLCs. The gene expression of both differentiation markers was significantly lower in cells exposed to diabetic FFAs than in those treated with nondiabetic FFAs. Saturated fatty acids were significantly increased and linoleic acid was significantly decreased in the cellular phospholipid fraction after exposure to diabetic FFAs. In contrast, monounsaturated fatty acids were reduced and linoleic acid was elevated in the cellular triglyceride fraction in response to diabetic FFAs. Such an altered serum FFA profile in patients with T2DM reduces the proliferation and differentiation potential of AdMSCs, presumably due to the aberrant distribution of fatty acids into cell phospholipids and triglycerides.
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Data Availability Statement
Data will be available from corresponding author on reasonable request.
Abbreviations
- AdMSCs:
-
Adipose derived mesenchymal stem cells
- DM:
-
Diabetes mellitus
- DS:
-
Diabetic serum
- FBS:
-
Fasting blood sugar
- FFAs:
-
Free fatty acids
- MSCs:
-
Mesenchymal stem cells
- MUFAs:
-
Monounsaturated fatty acids
- nDS:
-
Non diabetic serum
- PUFAs:
-
Polyunsaturated fatty acids
- SFAs:
-
Saturated fatty acids
- PGCLC:
-
Primordial germ cell-like cell
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Funding
This work was supported by grants from Endocrine Research Center, Tabriz University of Medical Sciences and Tabriz University of Medical Sciences (numbers [59420] and [66852]) to AM. The last author is supported by fellowship programs from the Alexander von Humboldt Foundation. The graphical designs were created with BioRender.com.
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Conceiving the study and designing the experiments, SF and AM; acquisition of funding, critical review and commentary, MN; providing human samples, ZN; performing the experiments and drafting the manuscript, RZ; statistical analysis, AG; supervision and planning. All authors participated in editing and have read and approved the manuscript.
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This study was approved by the Ethics Committee of Tabriz University of Medical Sciences (Code: IR.TBZMED.REC.1400.011).
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WHAT’S KNOWN?
• The serum free fatty acid profile is altered in type 2 diabetes.
WHAT’S NEW?
• The gene expression of both primordial germ cell-like cell differentiation markers significantly decreases in cells exposed to diabetic free fatty acids (FFAs).
• Diabetic FFAs significantly increase saturated fatty acids and decrease linoleic acid in the phospholipid fraction.
• Diabetic FFAs reduce monounsaturated fatty acids and increase linoleic acid in the triglyceride fraction.
Supplementary Information
Below is the link to the electronic supplementary material.
12010_2022_4204_MOESM1_ESM.docx
Supplementary file1 (DOCX 16 KB) Table S1. The primer sequences of the primordial germ cell-like cell differentiation markers.
12010_2022_4204_MOESM2_ESM.docx
Supplementary file2 (DOCX 14 KB) Table S2. Effects of diabetic and nondiabetic free fatty acids on the viability of primordial germ cell like cells.
12010_2022_4204_MOESM3_ESM.docx
Supplementary file3 (DOCX 14 KB) Table S3. Raw original data of fatty acid percentage or ratio of MSCs phospholipid and triglyceride fractions in the individually studied groups.
Figure S1
. Image of a thin-layer chromatography plate on which nondiabetic pooled whole serum (nDPWS) and lipid-depleted nondiabetic pooled serum (nDS) samples were run. The rectangles show the free fatty acid fractions in each serum sample.
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Norouzi, Z., Zarezadeh, R., Mehdizadeh, A. et al. Free Fatty Acids from Type 2 Diabetes Mellitus Serum Remodel Mesenchymal Stem Cell Lipids, Hindering Differentiation into Primordial Germ Cells. Appl Biochem Biotechnol 195, 3011–3026 (2023). https://doi.org/10.1007/s12010-022-04204-z
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DOI: https://doi.org/10.1007/s12010-022-04204-z