Journal of Cellular Biochemistry

Cover image for Vol. 116 Issue 7

Edited By: C. Fred Fox, Gary S. Stein, and Max M. Burger

Impact Factor: 3.368

ISI Journal Citation Reports © Ranking: 2013: 90/185 (Cell Biology); 107/291 (Biochemistry & Molecular Biology)

Online ISSN: 1097-4644

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Top Cited Articles 2014

Gillies, L. A. and Kuwana, T.
Apoptosis Regulation at the Mitochondrial Outer Membrane
Journal of Cellular Biochemistry 2014, vol. 115, p. 632

Song, L., Li, Y., Li, W., Wu, S. and Li, Z.
miR-495 Enhances the Sensitivity of Non-Small Cell Lung Cancer Cells to Platinum by Modulation of Copper-Transporting P-type Adenosine Triphosphatase A (ATP7A)
Journal of Cellular Biochemistry 2014, vol. 115, p. 1234

Shang, J., Yang, F., Wang, Y., Wang, Y., Xue, G., Mei, Q., Wang, F. and Sun, S..
MicroRNA-23a Antisense Enhances 5-Fluorouracil Chemosensitivity Through APAF-1/Caspase-9 Apoptotic Pathway in Colorectal Cancer Cells
Journal of Cellular Biochemistry 2014, vol. 115, p. 772

Tsimbouri, P., Gadegaard, N., Burgess, K., White, K., Reynolds, P., Herzyk, P., Oreffo, R. and Dalby, M. J
Nanotopographical Effects on Mesenchymal Stem Cell Morphology and Phenotype
Journal of Cellular Biochemistry 2014, vol. 115, p. 380

Cai, Y., Cai, T. and Chen, Y.
Wnt Pathway in Osteosarcoma, from Oncogenic to Therapeutic
Journal of Cellular Biochemistry 2014, vol. 115, p. 625

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JCB Spotlight Article

Notch Signaling Promotes Osteoclast Maturation and Resorptive Activity

Jason W Ashley, Jaimo Ahn, and Kurt D Hankenson

The role of Notch signaling in osteoclast differentiation is controversial with conflicting experimental evidence indicating both stimulatory and inhibitory roles. Differences in experimental protocols and in vivo versus in vitro models may explain the discrepancies between studies. In this study, we investigated cell autonomous roles of Notch signaling in osteoclast differentiation and function by altering Notch signaling during osteoclast differentiation using stimulation with immobilized ligands Jagged1 or Delta-like1 or by suppression with γ-secretase inhibitor DAPT or transcriptional inhibitor SAHM1. Stimulation of Notch signaling in committed osteoclast precursors resulted in larger osteoclasts with a greater number of nuclei and resorptive activity whereas suppression resulted in smaller osteoclasts with fewer nuclei and suppressed resorptive activity. Conversely, stimulation of Notch signaling in osteoclast precursors prior to induction of osteoclastogenesis resulted in fewer osteoclasts. Our data support a mechanism of context-specific Notch signaling effects wherein Notch stimulation inhibits commitment to osteoclast differentiation, but enhances the maturation and function of committed precursors.



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