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  1. Neuroprotection by Human Dental Pulp Mesenchymal Stem Cells: From Billions to Nano
    Venugopal C, K S, Rai KS, Pinnelli VB, Kutty BM, Dhanushkodi A
    Curr Gene Ther, 2018;18(5):307-323.
    PMID: 30209999 DOI: 10.2174/1566523218666180913152615
    INTRODUCTION: Mesenchymal Stem Cell (MSC) therapy in recent years has gained significant attention. Though the functional outcomes following MSC therapy for neurodegenerative diseases are convincing, various mechanisms for the functional recovery are being debated. Nevertheless, recent studies convincingly demonstrated that recovery following MSC therapy could be reiterated with MSC secretome per se thereby shifting the dogma from cell therapy to cell "based" therapy. In addition to various functional proteins, stem cell secretome also includes extracellular membrane vesicles like exosomes. Exosomes which are of "Nano" size have attracted significant interest as they can pass through the bloodbrain barrier far easily than macro size cells or growth factors. Exosomes act as a cargo between cells to bring about significant alterations in target cells. As the importance of exosomes is getting unveil, it is imperial to carry out a comprehensive study to evaluate the neuroprotective potential of exosomes as compared to conventional co-culture or total condition medium treatments.

    OBJECTIVE: Thus, the present study is designed to compare the neuroprotective potential of MSC derived exosomes with MSC-condition medium or neuron-MSC-co-culture system against kainic acid induced excitotoxicity in in vitro condition. The study also aims at comparing the neuroprotective efficacy of exosomes/condition medium/co-culture of two MSC viz., neural crest derived human Dental Pulp Stem Cells (hDPSC) and human Bone-Marrow Mesenchymal Stem Cells (hBM-MSC) to identify the appropriate MSC source for treating neurodegenerative diseases.

    RESULT: Our results demonstrated that neuroprotective efficacy of MSC-exosomes is as efficient as MSC-condition medium or neuron-MSC co-culture system and treating degenerating hippocampal neurons with all three MSC based approaches could up-regulate host's endogenous growth factor expressions and prevent apoptosis by activating cell survival PI3K-B-cell lymphoma-2 (Bcl-2) pathway.

    CONCLUSION: Thus, the current study highlights the possibilities of treating neurodegenerative diseases with "Nano" size exosomes as opposed to transplanting billions of stem cells which inherit several disadvantages.

  2. Corrigendum to: Neuroprotection by Human Dental Pulp Mesenchymal Stem Cells: From Billions to Nano
    Venugopal C, K S, Rai KS, Pinnelli VB, Kutty BM, Dhanushkodi A
    Curr Gene Ther, 2023;23(3):243-244.
    PMID: 37394956 DOI: 10.2174/156652322303230528200022
    In this correction, the Editor in Chief suggested revising the publication of Figures 3 and 8E in the article after the correction in numeric value. Below is the corrected version of the figures [1]. The electronic version of the article can be found in "Neuroprotection by Human Dental Pulp Mesenchymal Stem Cells: From Billions to Nano" in the journal Current Gene Therapy, 2018, 18(5), 307-323. Bentham Science apologizes to the readers of the journal for any inconvenience this may have caused. The original article can be found online at: https://www.eurekaselect.com/article/93056.
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