Brazilin isolated from Caesalpinia sappan suppresses nuclear envelope reassembly by inhibiting barrier-to-autointegration factor phosphorylation

Seong Hoon Kim, Ha Na Lyu, Ye Seul Kim, Yong Hyun Jeon, Wanil Kim, Sangjune Kim, Jong Kwan Lim, Ho Won Lee, Nam In Baek, Kwan Yong Choi, Jaetae Lee, Kyong Tai Kim

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

To date, many anticancer drugs have been developed by directly or indirectly targeting microtubules, which are involved in cell division. Although this approach has yielded many anticancer drugs, these drugs produce undesirable side effects. An alternative strategy is needed, and targeting mitotic exit may be one alternative approach. Localization of phosphorylated barrier-to-autointegration factor (BAF) to the chromosomal core region is essential for nuclear envelope compartment relocalization. In this study, we isolated brazilin from Caesalpinia sappan Leguminosae and demonstrated that it inhibited BAF phosphorylation in vitro and in vivo. Moreover, we demonstrated direct binding between brazilin and BAF. The inhibition of BAF phosphorylation induced abnormal nuclear envelope reassembly and cell death, indicating that perturbation of nuclear envelope reassembly could be a novel approach to anticancer therapy. We propose that brazilin isolated from C. sappan may be a new anticancer drug candidate that induces cell death by inhibiting vaccinia-related kinase 1-mediated BAF phosphorylation.

Original languageEnglish
Article numberA9
Pages (from-to)175-184
Number of pages10
JournalJournal of Pharmacology and Experimental Therapeutics
Volume352
Issue number1
DOIs
StatePublished - 1 Jan 2015

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