Abstract
Mitochondria transplantation has emerged as a successful therapeutic modality to treat several degenerative diseases. However, the biodistribution of transplanted mitochondria has not been well studied. We investigated the ex-vivo systemic biodistribution and therapeutic efficacy of intravenously transplanted graphene quantum dots (GQDs) conjugated to isolated mitochondria (Mt-GQDs) in diabetic rat tissues. The results revealed that Mt-GQDs facilitate the tracking of transplanted mitochondria without affecting their therapeutic efficacy. It is compelling to note that Mt-GQDs and isolated mitochondria show comparable therapeutic efficacies in decreasing blood glucose levels, oxidative stress, inflammatory gene expressions, and restoration of different mitochondrial functions in pancreatic tissues of diabetic rats. In addition, histological section examination under a fluorescence microscope demonstrated the localization of Mt-GQDs in multiple tissues of diabetic rats. In conclusion, this study indicates that Mt-GQDs provide an effective mitochondrial transplantation tracking modality.
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Data Availability
Data would be made available on request.
Abbreviations
- GQDs:
-
Graphene Quantum Dots
- Mt-GQDs:
-
Mitochondria conjugated Graphene Quantum Dots
- STZ:
-
Streptozotocin
- NCD:
-
Normal Chow Diet
- TEM:
-
Transmission electron microscope
- FTIR:
-
Fourier transform infrared
- PDI:
-
Polydispersity Index
- PEG:
-
Polyethylene glycol
- GFP:
-
Green fluorescent protein
- TBARS:
-
Thiobarbituric acid reactive substances
- NO:
-
Nitric oxide
- SOD:
-
Superoxide dismutase
- CAT:
-
Catalase
- GSH:
-
And reduced glutathione
- ATP:
-
Adenosine triphosphate
- PGC1-α:
-
Peroxisome proliferator-activated receptor-gamma coactivator
- NF-kB:
-
Nuclear factor kappa
- IL-6:
-
Interleukin
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Acknowledgements
We would like to thank Science and Engineering Research Board, SERB, SRG grant (SRG/2019/002105), Govt. of India and Banasthali Vidyapith for providing funds to support the research.
Funding
We would like to thank Science and Engineering Research Board (SERB), Govt. of India for funding through Start Up Research Grant (SRG), File Number: SRG/2019/002105 granted to Dr. Swati Paliwal.
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P.M carried synthesis, characterization of nanoparticles and animal model work, J.P performed biochemical assays. S.P conceptualized the idea and supervised the study. All the authors contributed to writing and reviewing the manuscript.
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Mudgal, P., Pareek, J. & Paliwal, S. Biodistribution of Intravenously Transplanted Mitochondria Conjugated with Graphene Quantum Dots in Diabetic Rats. J Fluoresc (2023). https://doi.org/10.1007/s10895-023-03480-0
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DOI: https://doi.org/10.1007/s10895-023-03480-0