Circulating exosomes derived from transplanted progenitor cells aid the functional recovery of ischemic myocardium.
Progyaparamita SahaSudhish SharmaLaxminarayana KorutlaSrinivasa Raju DatlaFarnaz Shoja-TaheriRachana MishraGrace E BighamMalini SarkarDavid MoralesGregory BittleMuthukumar GunasekaranChetan AmbasthaMir Yasir ArfatDeqiang LiAndreas HabertheuerRobert HuManu O PlattPeixin YangMichael E DavisPrashanth VallabhajosyulaSunjay KaushalPublished in: Science translational medicine (2020)
The stem cell field is hindered by its inability to noninvasively monitor transplanted cells within the target organ in a repeatable, time-sensitive, and condition-specific manner. We hypothesized that quantifying and characterizing transplanted cell-derived exosomes in the recipient plasma would enable reliable, noninvasive surveillance of the conditional activity of the transplanted cells. To test this hypothesis, we used a human-into-rat xenogeneic myocardial infarction model comparing two well-studied progenitor cell types: cardiosphere-derived cells (CDCs) and c-kit+ cardiac progenitor cells (CPCs), both derived from the right atrial appendage of adults undergoing cardiopulmonary bypass. CPCs outperformed the CDCs in cell-based and in vivo regenerative assays. To noninvasively monitor the activity of transplanted CDCs or CPCs in vivo, we purified progenitor cell-specific exosomes from recipient total plasma exosomes. Seven days after transplantation, the concentration of plasma CPC-specific exosomes increased about twofold compared to CDC-specific exosomes. Computational pathway analysis failed to link CPC or CDC cellular messenger RNA (mRNA) with observed myocardial recovery, although recovery was linked to the microRNA (miRNA) cargo of CPC exosomes purified from recipient plasma. We further identified mechanistic pathways governing specific outcomes related to myocardial recovery associated with transplanted CPCs. Collectively, these findings demonstrate the potential of circulating progenitor cell-specific exosomes as a liquid biopsy that provides a noninvasive window into the conditional state of the transplanted cells. These data implicate the surveillance potential of cell-specific exosomes for allogeneic cell therapies.
Keyphrases
- stem cells
- mesenchymal stem cells
- induced apoptosis
- cell therapy
- cell cycle arrest
- left ventricular
- oxidative stress
- bone marrow
- public health
- heart failure
- endothelial cells
- endoplasmic reticulum stress
- type diabetes
- cell death
- weight loss
- skeletal muscle
- pi k akt
- high throughput
- subarachnoid hemorrhage
- human health
- insulin resistance
- high dose
- blood brain barrier
- solid state
- data analysis
- nucleic acid