Brefeldin A

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Background

Brefeldin A (BFA) is an inhibitor of ATPase with IC50 value of 0.2 μM [1]ATPase is a chemical enzyme which is essential in the ADP/ATP exchange which process provides chemical potential energy. ATP supplies the energy for many physiological activities such as importing metabolites necessary for cell metabolism, exporting toxins, wastes, and solutes that can hinder cellular processes, cell proliferation, ER stress and so forth [2]. Treatment with BFA could attenuate stimulus-dependent hyperalgesia phenomenon via inhibiting vesicular exocytosis which process is important for ATP release [3]. When tested with cell line HEK293 cells (stably express wild-type (wt) CRELD2), BFA treatment nearly abolished the secretion of wtCRELD2 completely via inhibiting the transportation of proteins from the ER to the Golgi apparatus [4]. In MCF-7 cells and Hela cells, treatment with BFA induced p53 expression via inhibiting ATP which enhanced ER stress [5]. When treated with colorectal cancer cell line HCT116 cells, BFA treatment induced cells apoprosis by inhibiting ATP which functioned in the process of cellular vesicle trafficking [1].BFA also is reported as an inhibitor for GTP/GDP exchange in a dose-dependent way, which is important in vesicular trafficking [6].

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[2] M. Westerterp, A.E. Bochem, L. Yvan-Charvet, A.J. Murphy, N. Wang, A.R. Tall, ATP-binding cassette transporters, atherosclerosis, and inflammation, Circulation research, 114 (2014) 157-170.
[3] E.K. Joseph, P.G. Green, J.D. Levine, ATP release mechanisms of endothelial cell-mediated stimulus-dependent hyperalgesia, The journal of pain : official journal of the American Pain Society, 15 (2014) 771-777.
[4] K. Oh-hashi, Y. Kanamori, Y. Hirata, K. Kiuchi, Characterization of V-ATPase inhibitor-induced secretion of cysteine-rich with EGF-like domains 2, Cell biology and toxicology, 30 (2014) 127-136.
[5] W.C. Lin, Y.C. Chuang, Y.S. Chang, M.D. Lai, Y.N. Teng, I.J. Su, C.C. Wang, K.H. Lee, J.H. Hung, Endoplasmic reticulum stress stimulates p53 expression through NF-kappaB activation, PLoS One, 7 (2012) e39120.
[6] D. Prieto, P. Corchete, Transport of flavonolignans to the culture medium of elicited cell suspensions of Silybum marianum, Journal of plant physiology, 171 (2014) 63-68.