Activin/BMP2 chimeric ligands direct adipose-derived stem cells to chondrogenic differentiation

Macarena Peran, Sergio Ruiz, Witek Kwiatkowski, Juan Antonio Marchal, Sheng Lian Yang, Antonia Aranega, Senyon Choe*, Juan Carlos Izpisua Belmonte

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Human adipose derived stem cells (hASCs) can be easily isolated and their plasticity has been well characterized. Several TGF-β superfamily ligands can direct hASCs towards chondrocytes. However, these ligands are difficult to purify and expensive. We have developed a library of Activin/BMP2 chimeric ligands (AB2 ligands) by systematically mixing their sequence segments and have tested their chondrogenic potential in hASCs. Cells cultured in monolayer or in a pellet culture system were incubated with a chemically defined medium supplemented with the chimeric ligands for 4 or 6. weeks and showed higher expression levels of type II collagen, aggrecan, and Sox9 mRNAs when compared with control and non-treated cells. Moreover, toluidine blue, alcian blue, and Masson's trichrome staining was markedly increased in treated cells, both in cell pellet and monolayer assays. In addition, immunohistochemical staining for detection of type I collagen, type II collagen, and Sox 9 demonstrated the acquisition of a chondrogenic phenotype in both culture systems. We present here an inexpensive and robust protocol for differentiation of hASCs towards chondrocytes in a reproducible and highly efficient manner. The AB2 ligands employed are easily produced and have properties that may become useful in cell therapy.

Original languageEnglish (US)
Pages (from-to)464-476
Number of pages13
JournalStem Cell Research
Volume10
Issue number3
DOIs
StatePublished - May 1 2013

ASJC Scopus subject areas

  • Developmental Biology
  • Cell Biology

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