Open Access

Overexpression of Csk-binding protein/phosphoprotein associated with glycosphingolipid-enriched microdomains induces cluster of differentiation 59-mediated apoptosis in Jurkat cells

  • Authors:
    • Bei‑Bei Cong
    • Mei‑Hua Gao
    • Bing Li
    • Bing Wang
    • Bei Zhang
    • Li‑Na Wang
    • Shu‑Chao Zhang
    • Hua‑Qiao Li
    • Zhong Wang
    • Shu‑Yi Han
  • View Affiliations

  • Published online on: March 9, 2018     https://doi.org/10.3892/etm.2018.5940
  • Pages: 4139-4148
  • Copyright: © Cong et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Csk-binding protein/phosphoprotein associated with glycosphingolipid-enriched microdomains (CBP/PAG) is a membrane‑bound adaptor protein that downregulates the activation of Src family kinases present in lipid rafts. To elucidate the role of CBP/PAG in human T cell activation, a cell line overexpressing CBP/PAG was constructed and the function of CBP/PAG in Jurkat cells was examined. The present study revealed that increased CBP/PAG expression in T cells significantly enhanced their apoptosis and reduced cellular activation and proliferation. Overexpression of CBP/PAG suppressed the growth of Jurkat cells by recruiting c‑Src and its negative regulator, C‑terminal Src kinase (CSK), to lipid rafts. The negative regulation of CBP/PAG was enhanced in the presence of anti‑cluster of differentiation (CD)59 monoclonal antibodies. In addition, a significant association was revealed between the location of CBP/PAG and CD59, which were co‑expressed in the same region of the cell membrane, implicating a potential overlap of the elicited signaling pathways. These results indicate that CBP/PAG functions as a negative regulator of cell signal transduction and suggest that CD59 may strengthen the role of negative feedback regulation.
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May-2018
Volume 15 Issue 5

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Cong BB, Gao MH, Li B, Wang B, Zhang B, Wang LN, Zhang SC, Li HQ, Wang Z, Han SY, Han SY, et al: Overexpression of Csk-binding protein/phosphoprotein associated with glycosphingolipid-enriched microdomains induces cluster of differentiation 59-mediated apoptosis in Jurkat cells. Exp Ther Med 15: 4139-4148, 2018
APA
Cong, B., Gao, M., Li, B., Wang, B., Zhang, B., Wang, L. ... Han, S. (2018). Overexpression of Csk-binding protein/phosphoprotein associated with glycosphingolipid-enriched microdomains induces cluster of differentiation 59-mediated apoptosis in Jurkat cells. Experimental and Therapeutic Medicine, 15, 4139-4148. https://doi.org/10.3892/etm.2018.5940
MLA
Cong, B., Gao, M., Li, B., Wang, B., Zhang, B., Wang, L., Zhang, S., Li, H., Wang, Z., Han, S."Overexpression of Csk-binding protein/phosphoprotein associated with glycosphingolipid-enriched microdomains induces cluster of differentiation 59-mediated apoptosis in Jurkat cells". Experimental and Therapeutic Medicine 15.5 (2018): 4139-4148.
Chicago
Cong, B., Gao, M., Li, B., Wang, B., Zhang, B., Wang, L., Zhang, S., Li, H., Wang, Z., Han, S."Overexpression of Csk-binding protein/phosphoprotein associated with glycosphingolipid-enriched microdomains induces cluster of differentiation 59-mediated apoptosis in Jurkat cells". Experimental and Therapeutic Medicine 15, no. 5 (2018): 4139-4148. https://doi.org/10.3892/etm.2018.5940