Joint Development Involves a Continuous Influx of Gdf5-Positive Cells

Yulia Shwartz, Sergey Viukov, Sharon Krief, Elazar Zelzer

Research output: Contribution to journalArticlepeer-review


Synovial joints comprise several tissue types, including articular cartilage, the capsule, and ligaments. All of these compartments are commonly assumed to originate from an early set of Gdf5-expressing progenitors populating the interzone domain. Here, we provide evidence that joints develop through a continuous influx of cells into the interzone, where they contribute differentially to forming joint tissues. Using a knockin Gdf5-CreER T2 mouse, we show that early labeling of Gdf5-positive interzone cells failed to mark the entire organ. Conversely, multiple Cre activation steps indicated a contribution of these cells to various joint compartments later in development. Spatiotemporal differences between Gdf5 and tdTomato reporter expression support the notion of a continuous recruitment process. Finally, differential contribution of Gdf5-positive cells to various tissues suggests that the spatiotemporal dynamics of Gdf5 expression may instruct lineage divergence. This work supports the influx model of joint development, which may apply to other organogenic processes.
Original languageEnglish
Pages (from-to)2577-2587
Number of pages11
JournalCell Reports
Issue number12
StatePublished - Jun 2016


Dive into the research topics of 'Joint Development Involves a Continuous Influx of Gdf5-Positive Cells'. Together they form a unique fingerprint.

Cite this