Cuili Pan1,2, Zhaoxiong Lei1,2, Shuzhe Wang1,2, Xingping Wang1,2, Dawei Wei1,2, Xiaoyan Cai1,2, Zhuoma Luoreng1,2, Lei Wang3, Yun Ma4,5,6. 1. School of Agriculture, Ningxia University, Yinchuan, 750021, China. 2. Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia Hui Autonomous Region, Ningxia University, Yinchuan, 750021, China. 3. College of Life Sciences, Xinyang Normal University, Xinyang, 464000, Henan, China. 4. School of Agriculture, Ningxia University, Yinchuan, 750021, China. mayun_666@126.com. 5. Key Laboratory of Ruminant Molecular and Cellular Breeding, Ningxia Hui Autonomous Region, Ningxia University, Yinchuan, 750021, China. mayun_666@126.com. 6. College of Life Sciences, Xinyang Normal University, Xinyang, 464000, Henan, China. mayun_666@126.com.
Abstract
BACKGROUND: Cyclin-dependent kinases (CDKs) are protein kinases regulating important cellular processes such as cell cycle and transcription. Many CDK genes also play a critical role during adipogenic differentiation, but the role of CDK gene family in regulating bovine adipocyte differentiation has not been studied. Therefore, the present study aims to characterize the CDK gene family in bovine and study their expression pattern during adipocyte differentiation. RESULTS: We performed a genome-wide analysis and identified a number of CDK genes in several bovine species. The CDK genes were classified into 8 subfamilies through phylogenetic analysis. We found that 25 bovine CDK genes were distributed in 16 different chromosomes. Collinearity analysis revealed that the CDK gene family in Bos taurus is homologous with Bos indicus, Hybrid-Bos taurus, Hybrid Bos indicus, Bos grunniens and Bubalus bubalis. Several CDK genes had higher expression levels in preadipocytes than in differentiated adipocytes, as shown by RNA-seq analysis and qPCR, suggesting a role in the growth of emerging lipid droplets. CONCLUSION: In this research, 185 CDK genes were identified and grouped into eight distinct clades in Bovidae, showing extensively homology. Global expression analysis of different bovine tissues and specific expression analysis during adipocytes differentiation revealed CDK4, CDK7, CDK8, CDK9 and CDK14 may be involved in bovine adipocyte differentiation. The results provide a basis for further study to determine the roles of CDK gene family in regulating adipocyte differentiation, which is beneficial for beef quality improvement.
BACKGROUND: Cyclin-dependent kinases (CDKs) are protein kinases regulating important cellular processes such as cell cycle and transcription. Many CDK genes also play a critical role during adipogenic differentiation, but the role of CDK gene family in regulating bovine adipocyte differentiation has not been studied. Therefore, the present study aims to characterize the CDK gene family in bovine and study their expression pattern during adipocyte differentiation. RESULTS: We performed a genome-wide analysis and identified a number of CDK genes in several bovine species. The CDK genes were classified into 8 subfamilies through phylogenetic analysis. We found that 25 bovine CDK genes were distributed in 16 different chromosomes. Collinearity analysis revealed that the CDK gene family in Bos taurus is homologous with Bos indicus, Hybrid-Bos taurus, Hybrid Bos indicus, Bos grunniens and Bubalus bubalis. Several CDK genes had higher expression levels in preadipocytes than in differentiated adipocytes, as shown by RNA-seq analysis and qPCR, suggesting a role in the growth of emerging lipid droplets. CONCLUSION: In this research, 185 CDK genes were identified and grouped into eight distinct clades in Bovidae, showing extensively homology. Global expression analysis of different bovine tissues and specific expression analysis during adipocytes differentiation revealed CDK4, CDK7, CDK8, CDK9 and CDK14 may be involved in bovine adipocyte differentiation. The results provide a basis for further study to determine the roles of CDK gene family in regulating adipocyte differentiation, which is beneficial for beef quality improvement.
Authors: Jay D Horton; Nila A Shah; Janet A Warrington; Norma N Anderson; Sahng Wook Park; Michael S Brown; Joseph L Goldstein Journal: Proc Natl Acad Sci U S A Date: 2003-09-25 Impact factor: 11.205
Authors: Keith E Fox; Dana M Fankell; Paul F Erickson; Susan M Majka; Joseph T Crossno; Dwight J Klemm Journal: J Biol Chem Date: 2006-10-27 Impact factor: 5.157