Cyclin-dependent kinase 5 regulates proliferation, migration, tyrosinase activity, and melanin production in B16-F10 melanoma cells via the essential regulator p-CREB

  • Xiuqing Li
  • Ruifang Wang
  • Junzhen Zhang
  • Shanshan Yang
  • Kaiyuan Ji
  • Bin Du
  • Xuexian Liu
  • Bo Liu
  • Shuhui Qi
  • Qiong Jia
  • Ruiwen FanEmail author


Melanoma is an aggressive cancer with increasing incidence and a growing lifetime risk that arises from normal melanocytes or their precursors. A thorough understanding of the molecular mechanism of melanomagenesis and melanoma biology is essential for the diagnosis, prognostication, and therapy of melanoma. Cyclin-dependent protein kinase 5 (Cdk5) is one of the proteins highly expressed in B16-F10 melanoma cells that controls melanoma cell motility, invasiveness, and metastatic spread and might be a promising novel therapeutic target. The effect of Cdk5 on proliferation and migration, which are important for carcinogenesis, has not been reported. In the current study, we found that siRNA-mediated knockdown of Cdk5 in B16-F10 melanoma cells inhibited melanoma cell proliferation through downregulation of the CaMK4-p-CREB pathway, inhibited migration through downregulation of p-CREB, integrin beta 1, and integrin beta 5, and also inhibited tyrosinase activity and melanin production through p-CREB-MITF regulation. The results indicate that Cdk5 controls melanoma development, with an essential regulatory role for p-CREB.


Melanoma Proliferation Migration Cdk5 Phosphorated CREB (p-CREB) 


Funding information

This work was supported by a Special Fund for the Young Sanjin Scholars Distinguished Professor (Ruiwen Fan) and Research Project Supported by Shanxi Scholarship Council of China (2017-072).

Compliance with ethical standards

Conflicts of interest

The authors declare that they have no conflict of interests.


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Copyright information

© The Society for In Vitro Biology 2019

Authors and Affiliations

  1. 1.College of Animal Science and Veterinary MedicineShanxi Agricultural UniversityTaiguChina
  2. 2.College of Animal Science and Veterinary MedicineAnhui Agricultural UniversityHefeiChina

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