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Updated: May 9, 2026

Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors
Published on: June 7, 2016
Activating types 1 and 2 angiotensin II receptors modulate the hypertrophic differentiation of chondrocytes
Ichiro Tsukamoto1, Shinji Inoue, Takeshi Teramura
1Department of Orthopaedic Surgery, Faculty of Medicine, Kinki University, 377-2 Ohno-Higashi, Osaka-Sayama City, Osaka 589-8511, Japan.
Abstract:
A local tissue-specific renin-angiotensin system (local RAS) has been identified in many organs. However, no report has described the role of a local RAS in the hypertrophic differentiation of chondrocytes. To examine the role of a local RAS in the hypertrophic differentiation, we activated angiotensin II type 1 receptor (AT1R) and angiotensin II type 2 receptor (AT2R) separately in the cell line ATDC5, which involves differentiation from mesenchymal stem cells to hypertrophic chondrocytes. Activation of AT1R suppressed and activation of AT2R enhanced the expression of markers of hypertrophic differentiation, including type X collagen, matrix metalloproteinase 13 and runt-related transcription factor 2.
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