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| Status |
Public on Dec 16, 2013 |
| Title |
Identification of chondrocyte subsets during human development |
| Organism |
Homo sapiens |
| Experiment type |
Expression profiling by array
|
| Summary |
Joint injury and osteoarthritis affect millions of people worldwide, but attempts to generate articular cartilage using adult stem/progenitor cells have been unsuccessful. We hypothesized that recapitulation of the human developmental chondrogenic program using pluripotent stem cells (PSCs) may represent a superior approach for cartilage restoration. Using laser capture microdissection followed by microarray analysis, we first defined a surface phenotype (CD146low/negCD166low/negCD73+CD44lowBMPR1B+) distinguishing the earliest cartilage committed cells (pre-chondrocytes) at 5-6 weeks of development; pellet assays confirmed these cells as functional, chondrocyte-restricted progenitors. Flow cytometry, qPCR and immunohistochemistry at 17 weeks revealed that the superficial layer of peri-articular chondrocytes was enriched in cells with this surface phenotype. Isolation of cells with a similar immunophenotype from differentiating human PSCs revealed a population of CD166negBMPR1B+ putative pre-chondrocytes. Functional characterization confirmed these cells as cartilage-committed, chondrocyte progenitors. The identification of a specific molecular signature for primary cartilagecommitted progenitors may provide essential knowledge for the generation of purified, clinically relevant cartilage cells from PSCs.
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| Overall design |
A total of 15 samples were analyzed. In the first comparison, there were 6 biological replicates for both the chondrogenic condensations and total limb cells. In the second comparison, three biological replicates of chondrocytes from the articular region were compared to the 6 replicates of the condensations.
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| Contributor(s) |
Evseenko D |
| Citation(s) |
24371811 |
| Submission date |
Oct 28, 2013 |
| Last update date |
Mar 25, 2019 |
| Contact name |
Denis Evseenko |
| E-mail(s) |
evseenko@usc.edu
|
| Phone |
323-219-0234
|
| Organization name |
University of Southern California
|
| Department |
Orthopaedic Surgery
|
| Lab |
Evseenko Lab
|
| Street address |
1450 Biggy St
|
| City |
Los Angeles |
| State/province |
CA |
| ZIP/Postal code |
90033 |
| Country |
USA |
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| Platforms (1) |
| GPL570 |
[HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array |
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| Samples (15)
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| Relations |
| BioProject |
PRJNA225482 |
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