Bin Mei, Gao-lin Liang. Paclitaxel Hydrogelator Delays Microtubule Aggregation[J]. Chinese Journal of Chemical Physics , 2017, 30(2): 239-242. doi: 10.1063/1674-0068/30/cjcp1609179
Citation: Bin Mei, Gao-lin Liang. Paclitaxel Hydrogelator Delays Microtubule Aggregation[J]. Chinese Journal of Chemical Physics , 2017, 30(2): 239-242. doi: 10.1063/1674-0068/30/cjcp1609179

Paclitaxel Hydrogelator Delays Microtubule Aggregation

doi: 10.1063/1674-0068/30/cjcp1609179
  • Received Date: 2016-09-11
  • Rev Recd Date: 2016-10-23
  • Paclitaxel (PTX) is one of the most efficient anticancer drugs for the treatment of cancers through β-tubulin-binding. Our previous work indicated that a PTX-derivative hydroge-lator Fmoc-Phe-Phe-Lys(paclitaxel)-Tyr(H2PO3)-OH (1)could promote neuron branching but the underlying mechanism remains unclear. Using tubulin assembly-disassembly assay, in this work, we found that compound 1 obviously delayed more microtubule aggregation than PTX did. Under the catalysis of alkaline phosphatase, Fmoc-Phe-Phe-Lys(paclitaxel)-Tyr(H2PO3)-OH could self-assemble into nanofiber Fmoc-Phe-Phe-Lys(paclitaxel)-Tyr-OH with width comparable to the size of αβ-tubulin dimer. Therefore, we proposed in this work that nanofiber Fmoc-Phe-Phe-Lys(paclitaxel)-Tyr-OH not only inhibits the αβ-tubulin dimer binding to each other but also interferes with the plus end aggregation of microtubule. This work provides a new mechanism of the inhibition of microtubule formation by a PTX-derivative hydrogelator.

     

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