Summary of ssbd-repos-000221

Repository URL
Imaging data sets of ATDC5 cells and fetal growth plates

Cross-talk between cGMP and cAMP signaling in endochondral bone formation and the physiological role of the CNP/GC-B system were demonstrated using ATDC5 cells and fetal growth plates expressing cGMP, PKA, or Ca2+ biosensors.

Submited Date
Release Date
Updated Date
Data size
28.8 GB
Data formats
oif, tif

Mus musculus
Cell Line
ATDC5 cell
Molecular Function (MF)
Biological Process (BP)
Cellular Component (CC)
Study Type
Förster Resonance Energy Transfer
Imaging Methods
Confocal microscopy, Two-photon microscopy

Method Summary

See details in Hirota K, Hirashima T, Horikawa K, Yasoda A, Matsuda M. C-type natriuretic peptide-induced PKA activation promotes endochondral bone formation in hypertrophic chondrocytes. Endocrinology. 2022 Jan 18:bqac005. doi: 10.1210/endocr/bqac005. Epub ahead of print. PMID: 35041746.

Related paper(s)

Keisho Hirota, Tsuyoshi Hirashima, Kazuki Horikawa, Akihiro Yasoda, Michiyuki Matsuda (2022) C-type Natriuretic Peptide-induced PKA Activation Promotes Endochondral Bone Formation in Hypertrophic Chondrocytes., Endocrinology, Volume 163, Number 3

Published in 2022 Mar 1

(Abstract) Longitudinal bone growth is achieved by a tightly controlled process termed endochondral bone formation. C-type natriuretic peptide (CNP) stimulates endochondral bone formation through binding to its specific receptor, guanylyl cyclase (GC)-B. However, CNP/GC-B signaling dynamics in different stages of endochondral bone formation have not been fully clarified, especially in terms of the interaction between the cyclic guanine monophosphate (cGMP) and cyclic adenosine monophosphate (cAMP) pathways. Here, we demonstrated that CNP activates the cAMP/protein kinase A (PKA) pathway and that this activation contributed to the elongation of the hypertrophic zone in the growth plate. Cells of the chondrogenic line ATDC5 were transfected with Forster resonance energy transfer (FRET)-based cGMP and PKA biosensors. Dual-FRET imaging revealed that CNP increased intracellular cGMP levels and PKA activities in chondrocytes. Further, CNP-induced PKA activation was enhanced following differentiation of ATDC5 cells. Live imaging of the fetal growth plate of transgenic mice, expressing a FRET biosensor for PKA, PKAchu mice, showed that CNP predominantly activates the PKA in the hypertrophic chondrocytes. Additionally, histological analysis of the growth plate of PKAchu mice demonstrated that CNP increased the length of the growth plate, but coadministration of a PKA inhibitor, H89, inhibited the growth-promoting effect of CNP only in the hypertrophic zone. In summary, we revealed that CNP-induced cGMP elevation activated the cAMP/PKA pathway, and clarified that this PKA activation contributed to the bone growth-promoting effect of CNP in hypertrophic chondrocytes. These results provide insights regarding the cross-talk between cGMP and cAMP signaling in endochondral bone formation and in the physiological role of the CNP/GC-B system.
(MeSH Terms)

Keisho Hirota
Kyoto University , Department of Pathology and Biology of Diseases, Graduate School of Medicine
Image Data Contributors
Keisho Hirota
Quantitative Data Contributors
Keisho Hirota

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