Inhibition of Cdk5 increases osteoblast differentiation and bone mass and improves fracture healing.


Journal

Bone research
ISSN: 2095-4700
Titre abrégé: Bone Res
Pays: China
ID NLM: 101608652

Informations de publication

Date de publication:
06 Apr 2022
Historique:
received: 14 04 2021
accepted: 21 12 2021
revised: 10 12 2021
entrez: 6 4 2022
pubmed: 7 4 2022
medline: 7 4 2022
Statut: epublish

Résumé

Identification of regulators of osteoblastogenesis that can be pharmacologically targeted is a major goal in combating osteoporosis, a common disease of the elderly population. Here, unbiased kinome RNAi screening in primary murine osteoblasts identified cyclin-dependent kinase 5 (Cdk5) as a suppressor of osteoblast differentiation in both murine and human preosteoblastic cells. Cdk5 knockdown by siRNA, genetic deletion using the Cre-loxP system, or inhibition with the small molecule roscovitine enhanced osteoblastogenesis in vitro. Roscovitine treatment significantly enhanced bone mass by increasing osteoblastogenesis and improved fracture healing in mice. Mechanistically, downregulation of Cdk5 expression increased Erk phosphorylation, resulting in enhanced osteoblast-specific gene expression. Notably, simultaneous Cdk5 and Erk depletion abrogated the osteoblastogenesis conferred by Cdk5 depletion alone, suggesting that Cdk5 regulates osteoblast differentiation through MAPK pathway modulation. We conclude that Cdk5 is a potential therapeutic target to treat osteoporosis and improve fracture healing.

Identifiants

pubmed: 35383146
doi: 10.1038/s41413-022-00195-z
pii: 10.1038/s41413-022-00195-z
pmc: PMC8983726
doi:

Types de publication

Journal Article

Langues

eng

Pagination

33

Subventions

Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : CRC1149 (INST 40/492-2)
Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : CRC1149 (INST 40/492-1)

Informations de copyright

© 2022. The Author(s).

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Auteurs

Mubashir Ahmad (M)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.
Institute of Orthopedic Research and Biomechanics, Ulm University, Helmholtzstrasse 14, 89081, Ulm, Germany.

Benjamin Thilo Krüger (BT)

Institute of Orthopedic Research and Biomechanics, Ulm University, Helmholtzstrasse 14, 89081, Ulm, Germany.

Torsten Kroll (T)

Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstrasse 11, D-07745, Jena, Germany.

Sabine Vettorazzi (S)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.

Ann-Kristin Dorn (AK)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.

Florian Mengele (F)

Praxisklinik für Orthopädie, Unfall- und Neurochirurgie Prof. Bischoff/Dr. Spies/Dr. Mengele, 89231, Neu-Ulm, Germany.

Sooyeon Lee (S)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.

Sayantan Nandi (S)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.

Dilay Yilmaz (D)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.

Miriam Stolz (M)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.

Naveen Kumar Tangudu (NK)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.
UPMC Hillman Cancer Center, Department of Pharmacology and Chemical Biology, University of Pittsburgh, 5115 Center Avenue, 15232, Pittsburgh, PA, USA.

David Carro Vázquez (DC)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.
TAmiRNA GmbH, Leberstrasse 20, 1110, Vienna, Austria.

Johanna Pachmayr (J)

Paracelsus Medizinische Privatuniverstät, Institute of Pharmacy, Strubergasse 21, 5020, Salzburg, Austria.

Ion Cristian Cirstea (IC)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.

Maja Vujic Spasic (MV)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany.

Aspasia Ploubidou (A)

Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Beutenbergstrasse 11, D-07745, Jena, Germany.

Anita Ignatius (A)

Institute of Orthopedic Research and Biomechanics, Ulm University, Helmholtzstrasse 14, 89081, Ulm, Germany.

Jan Tuckermann (J)

Institute of Comparative Molecular Endocrinology (CME), Ulm University, Helmholtzstrasse 8/1, 89081, Ulm, Germany. jan.tuckermann@uni-ulm.de.
Department of Endocrinology, Ludwig Maximilians University Munich, Munich, 80336, Germany. jan.tuckermann@uni-ulm.de.

Classifications MeSH