Abstract
The use of exogenous antioxidants or the combination of them during in vitro oocyte/embryo culture media is reasonable. Co-delivery by nanocarrier has been designed to overcome the limitations of combining them traditionally. In this work, amphiphilic chitosan nanocarrier (ACN) was applied to co-encapsulate melatonin (Mel) and tretinoin (TTN) by the self-assembled method and evaluate their synergistic antioxidant efficacy in mice oocytes/embryos. The formation of single/dual-ACN was confirmed by Fourier-transformed infrared spectroscopy (FT-IR). The average particle diameter, size distribution, polydispersity index (PDI), and zeta potential of them were measured by dynamic light scattering (DLS), and the morphology was evaluated by TEM and SEM technologies. Also, the encapsulation efficiency (EE%) and drug loading content (DL%) of the nanocapsules were determined by UV-vis spectrophotometry. Studies of the in vitro release showed a continued drug release without any bursting effect of Mel+TTN-ACNs compared with single Mel/TTN-ACNs. Then, in both experiments, nuclear staining (Aceto-orcein and Hoechst 33342), fluorescent staining of H2DCFDA, chemiluminescence test, and qRT-PCR technique were performed as in vitro toxicity studies. The results of all these evaluations demonstrated that the dual delivery of Mel and TTN could accumulate a safety (without high-dose toxicity) synergistic anti-oxidative effect in oocyte/embryo by passive controlled, and inhibit intra/extracellular ROS levels by an enhanced intracellular penetration.
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Abbreviations
- COCs:
-
Cumulus-oocyte complex
- ACNs:
-
Amphiphilic chitosan nanocarriers
- B-ACN:
-
Blank nanocapsules
- Mel:
-
Melatonin
- TTN:
-
Tretinoin
- Mel+TTN-ACN:
-
ACN entrapping Mel and TTN
- EE%:
-
Encapsulation efficiency %
- DL%:
-
Drug loading capacity
- FSH:
-
Follicle-stimulating hormone
- LH:
-
Luteinizing hormone
- CS:
-
Chitosan
- TPP:
-
Sodium tripolyphosphate solution
- PMSG:
-
Pregnant mare serum gonadotrophin
- BSA:
-
Bovine Serum Albumin
- H2DCFDA:
-
2′,7′-Dichlorodihydrofluorescein diacetate
- GV:
-
Germinal vesicle
- GVBD:
-
Germinal vesicle breakdown
- M I:
-
Metaphase I
- M II:
-
Metaphase II
- t RNA:
-
Complementary RNA
- SD:
-
Standard deviation
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Processed data, evaluated data, and written the manuscript: F. A. and A. V.; performed experimental research and contributed to the study of the results: F. A. and M. K. H.; engaged in experimental work and analyzed data: A. V.; engaged in experimental work and updated manuscript: E. A. and S. K. H.; selected suitable animals, rated embryos, and gathered research data: F. A.; planned tests, analyzed data, and revised the manuscript: F. A., A. V., and M. K. H.
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Aghaz, F., Vaisi-Raygani, A., Khazaei, M. et al. Enhanced Synergistic-Antioxidant Activity of Melatonin and Tretinoin by Co-encapsulation into Amphiphilic Chitosan Nanocarriers: During Mice In Vitro Matured Oocyte/Morula-Compact Stage Embryo Culture Model. Reprod. Sci. 28, 3361–3379 (2021). https://doi.org/10.1007/s43032-021-00670-8
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DOI: https://doi.org/10.1007/s43032-021-00670-8