Biodistribution and retention of locally administered human mesenchymal stromal cells: Quantitative polymerase chain reaction-based detection of human DNA in murine organs.
Cytotherapy
; 19(3): 384-394, 2017 03.
Article
em En
| MEDLINE
| ID: mdl-28089755
ABSTRACT
BACKGROUND:
Determining the distributive fate and retention of a cell therapy product after administration is an essential part of characterizing it's biosafety profile. Therefore, regulatory guidelines stipulate that biodistribution assays are a requirement prior to advancing a cell therapy to the clinic. Here the development of a highly sensitive quantitative polymerase chain reaction (qPCR)-based method of tracking the biodistribution and retention of human mesenchymal stromal cells (hMSCs) in mice, rats or rabbits is described.METHODS:
A primer-probe-based qPCR assay was developed to detect and quantify human Alu sequences in a heterogeneous sample of human DNA (hDNA) and murine DNA from whole organ genomic DNA extracts. The assay measures the amount of genomic hDNA by amplifying a 31-base pair sequence of the human Alu (hAlu) repeat sequence, thus enabling the detection of 0.1 human cells in 1.5 × 106 heterogeneous cells.RESULTS:
Using this assay we investigated the biodistribution of 3 × 105 intramuscularly injected hMSCs in Balb/c nude mice. Genomic DNA was extracted from murine organs and hAlu sequences were quantified using qPCR analysis. After 3 months, hDNA ranging from 0.07%-0.58% was detected only at the injection sites and not in the distal tissues of the mice.DISCUSSION:
This assay represents a reproducible, sensitive a method of detecting hDNA in rodent and lapine models. This manuscript describes the method employed to generate preclinical biodistribution data that was accepted by regulatory bodies in support of a clinical trial application.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transplante Heterólogo
/
DNA
/
Reação em Cadeia da Polimerase
/
Transplante de Células-Tronco Mesenquimais
/
Rastreamento de Células
/
Células-Tronco Mesenquimais
Tipo de estudo:
Diagnostic_studies
/
Guideline
/
Qualitative_research
Limite:
Animals
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Cytotherapy
Ano de publicação:
2017
Tipo de documento:
Article