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Mesenchymal stem cell derived microvesicles: trophic shuttles for enhancement of sperm quality parameters
Aram Mokarizadeh1, Mohammad-Amin Rezvanfar, Kamran Dorostkar
1Department of Immunology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.
Abstract:
Diminishing sperm quality during cryopreservation process ends up in a complete or partial loss of sperm's fertilizing potential. Rehabilitation of such affected sperm is crucial to improve their fertilizing potential. A variety of evidence has indicated that secreted microvesicles (MVs) from mesenchymal stem cells (MSCs) are involved in regeneration of injured endogenous cells via shuttling MSC trophic molecules. Sperm obtained from cauda epididymides of adult male Wistar rats were equally assigned to four separate groups. Following suspension in cryoprotectant extender, sperm were untreated or treated with increasing concentrations of MSC-derived MVs (25, 50 and 100μg). After incubation in successive steps, sperm were cryopreserved. The frozen-thawed sperm were assessed for viability, motility and antioxidant capacity parameters. Consequently, expression levels of surface adhesion molecules (CD29, CD44, ICAM-I and VCAM-I) involved in sperm fusogenic and signaling properties, were assessed by flow cytometry. Results showed an enhanced quality parameters and adhesive properties of cryopreserved sperm following treatment with MSC-derived MVs.
Insights
Mesenchymal stem cell-derived microvesicles (MVs) can improve cryopreserved sperm quality. Treatment with MSC-MVs enhanced sperm viability, motility, and adhesive properties, aiding fertility preservation.
Area of Science:
- Reproductive Biology
- Stem Cell Therapy
- Cryopreservation Science
Background:
- Sperm cryopreservation often diminishes fertilizing potential.
- Mesenchymal stem cell-derived microvesicles (MSCs MVs) show regenerative capabilities.
- MSC MVs shuttle trophic molecules aiding cellular repair.
Purpose of the Study:
- To investigate the potential of MSC-derived MVs in rehabilitating cryopreserved rat sperm.
- To assess the impact of MSC MVs on sperm viability, motility, and antioxidant capacity.
- To evaluate changes in sperm surface adhesion molecules post-MSC MV treatment.
Main Methods:
- Rat sperm were treated with varying concentrations of MSC-derived MVs (25, 50, 100μg) before cryopreservation.
- Cryopreserved sperm were analyzed for viability, motility, and antioxidant parameters.
- Flow cytometry was used to assess expression of surface adhesion molecules (CD29, CD44, ICAM-I, VCAM-I).
Main Results:
- MSC MV treatment significantly enhanced sperm viability and motility.
- Antioxidant capacity of cryopreserved sperm improved following MSC MV application.
- Expression of key surface adhesion molecules involved in sperm function was upregulated.
Conclusions:
- MSC-derived MVs show promise in improving the quality of cryopreserved sperm.
- This approach could mitigate fertility loss associated with sperm cryopreservation.
- MSC MVs represent a potential therapeutic strategy for enhancing sperm fertilizing potential.
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