Protein Kinase CK2 is Implicated in Early Steps of the Differentiation of Pre-adipocytes into Adipocytes

Overview

Journal Mol Cell Biochem

Publisher Springer

Specialty Biochemistry

Date 2012 Jan 25

PMID 22270543

Citations 13

Authors

Nadine Wilhelm

Katja Kostelnik

Claudia Gotz

Mathias Montenarh

Affiliations

Soon will be listed here.

Abstract

Protein kinase CK2 is a ubiquitously expressed serine/threonine kinase which is composed of two catalytic α- or α'-subunits and two non-catalytic β-subunits. CK2 has been shown to be implicated in embryogenesis, spermatogenesis, and the development of certain organs but its role in basal differentiation processes is only sparsely analyzed. 3T3-L1 cells, which are murine pre-adipocytes, can be induced to differentiate into mature adipocytes within 2 weeks using a combination of insulin, dexamethasone, and isobutylmethylxanthine. We found that the activity of CK2 slightly increases until day 6 and subsequently, decreases in fully differentiated adipocytes. The decrease in activity goes along with a lower expression of all the three subunits of CK2. After inhibition of CK2 with 2-dimethylamino-4,5,6,7-tetrabromo-1H-benzimidazole (DMAT) or 1,2,5,8-tetrahydroxyanthraquinone (quinalizarin), before day 6, 3T3-L1 cells did not differentiate into adipocytes; inhibition of CK2 after day 6 had no effect on the differentiation process. These results indicated a role of CK2 in early events of the differentiation process and that CK2 is dispensable for late stages of differentiation.

Citing Articles

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