Progenitor/Stem Cell Delivery by Suprarenal Aorta Route in Acute Kidney Injury

Érika B. Rangel, Samirah A. Gomes, Rosemeire Kanashiro-Takeuchi, Joshua M. Hare

Research output: Contribution to journalArticle

Abstract

Progenitor/stem cell-based kidney regenerative strategies are a key step towards the development of novel therapeutic regimens for kidney disease treatment. However, the route of cell delivery, e.g., intravenous, intra-arterial, or intra-parenchymal, may affect the efficiency for kidney repair in different models of acute and chronic injury. Here, we describe a protocol of intra-aorta progenitor/stem cell injection in rats following either acute ischemia-reperfusion injury or acute proteinuria induced by puromycin aminonucleoside (PAN) – the experimental prototype of human minimal change disease and early stages of focal and segmental glomerulosclerosis. Vascular clips were applied across both renal pedicles for 35 min, or a single dose of PAN was injected via intra-peritoneal route, respectively. Subsequently, 2 x 106 stem cells [green fluorescent protein (GFP)-labeled c-Kit+ progenitor/stem cells or GFP-mesenchymal stem cells] or saline were injected into the suprarenal aorta, above the renal arteries, after application of a vascular clip to the abdominal aorta below the renal arteries. This approach contributed to engraftment rates of ∼10% at day 8 post ischemia-reperfusion injury, when c-Kit+ progenitor/stem cells were injected, which accelerated kidney recovery. Similar rates of engraftment were found after PAN-induced podocyte damage at day 21. With practice and gentle surgical technique, 100% of the rats could be injected successfully, and, in the week following injection, ∼ 85% of the injected rats will recover completely. Given the similarities in mammals, much of the data obtained from intra-arterial delivery of progenitor/stem cells in rodents can be tested in translational research and clinical trials with endovascular catheters in humans.

Original languageEnglish (US)
Pages (from-to)1390-1403
Number of pages14
JournalCell Transplantation
Volume28
Issue number11
DOIs
StatePublished - Nov 1 2019

Keywords

  • acute kidney injury
  • acute proteinuria
  • engraftment
  • ischemia-reperfusion injury
  • progenitor/stem cells
  • surgical technique

ASJC Scopus subject areas

  • Biomedical Engineering
  • Cell Biology
  • Transplantation

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