Circulating exosomes derived from transplanted progenitor cells aid the functional recovery of ischemic myocardium

Progyaparamita Saha, Sudhish Sharma, Laxminarayana Korutla, Srinivasa Raju Datla, Farnaz Shoja-Taheri, Rachana Mishra, Grace E. Bigham, Malini Sarkar, David Morales, Gregory Bittle, Muthukumar Gunasekaran, Chetan Ambastha, Mir Yasir Arfat, Deqiang Li, Andreas Habertheuer, Robert Hu, Manu O. Platt, Peixin Yang, Michael E. Davis, Prashanth VallabhajosyulaSunjay Kaushal*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article numbereaau1168
JournalScience translational medicine
Volume11
Issue number493
DOIs
StatePublished - 2019
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)

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