Recruitment of host's progenitor cells to sites of human amniotic fluid stem cells implantation

Teodelinda Mirebella, Alessandro Poggi, Monica Scaranari, Massimo Mogni, Mario Lituania, Chiara Baldo, Ranieri Cancedda, Chiara Gentili

Research output: Contribution to journalArticlepeer-review


The amniotic fluid is a new source of multipotent stem cells with a therapeutic potential for human diseases. Cultured at low cell density, human amniotic fluid stem cells (hAFSCs) were still able to generate colony-forming unit-fibroblast (CFU-F) after 60 doublings, thus confirming their staminal nature. Moreover, after extensive in vitro cell expansion hAFSCs maintained a stable karyotype. The expression of genes, such as SSEA-4, SOX2 and OCT3/4 was confirmed at early and later culture stage. Also, hAFSCs showed bright expression of mesenchymal lineage markers and immunoregulatory properties. hAFSCs, seeded onto hydroxyapatite scaffolds and subcutaneously implanted in nude mice, played a pivotal role in mounting a response resulting in the recruitment of host's progenitor cells forming tissues of mesodermal origin such as fat, muscle, fibrous tissue and immature bone. Implanted hAFSCs migrated from the scaffold to the skin overlying implant site but not to other organs. Given their in vivo: (i) recruitment of host progenitor cells, (ii) homing towards injured sites and (iii) multipotentiality in tissue repair, hAFSCs are a very appealing reserve of stem cells potentially useful for clinical application in regenerative medicine.

Original languageEnglish
Pages (from-to)4218-4227
Number of pages10
Issue number18
Publication statusPublished - Jun 2011


  • Angiogenesis
  • In vitro test
  • In vivo test
  • Inflammation
  • Mesenchymal stem cells
  • Tissue engineering

ASJC Scopus subject areas

  • Biomaterials
  • Bioengineering
  • Ceramics and Composites
  • Mechanics of Materials
  • Biophysics


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