Human Sclera Maintains Common Characteristics with Cartilage throughout Evolution
2008

Human Sclera and Its Cartilage-Like Properties

publication Evidence: moderate

Author Information

Author(s): Seko Yuko, Azuma Noriyuki, Takahashi Yoriko, Makino Hatsune, Morito Toshiyuki, Muneta Takeshi, Matsumoto Kenji, Saito Hirohisa, Sekiya Ichiro, Umezawa Akihiro

Primary Institution: National Institute for Child and Health Development, Tokyo, Japan

Hypothesis

Does the human sclera exhibit chondrogenic characteristics similar to cartilage?

Conclusion

The study demonstrates that human sclera has chondrogenic potential, retaining characteristics similar to cartilage throughout evolution.

Supporting Evidence

  • Scleral cells showed similarity to chondrocytes in gene expression.
  • Cultured scleral cells produced a cartilage-like matrix when exposed to specific growth factors.
  • The sclera retains chondrogenic potential, similar to that of certain vertebrates.

Takeaway

The human sclera can act like cartilage, which is surprising because it doesn't look like cartilage. This means it might help us understand eye diseases better.

Methodology

Microarray analysis and hierarchical clustering were used to compare gene expression in scleral cells and other mesenchymal cells.

Digital Object Identifier (DOI)

10.1371/journal.pone.0003709

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