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Updated: Jul 9, 2026

Purification and Quality Control of Recombinant Septin Complexes for Cell-Free Reconstitution
Published on: June 23, 2022
SEPT9_V1 protein expression is associated with human cancer cell resistance to microtubule-disrupting agents
Sharon Amir1, Nicola J Mabjeesh
1Prostate Cancer Research Laboratory, Department of Urology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
Abstract:
SEPT9 is a mammalian septin family member. There is growing evidence that SEPT9 plays a role in cancer. The protein product, SEPT9_V1, associates with microtubules and interacts with hypoxia-inducible factor (HIF)-1alpha, the regulated subunit of the key transcription factor HIF-1. HIF-1 transcriptional activity is thoroughly dependent on intact microtubules. We tested the hypothesis that SEPT9_V1 confers resistance to microtubule-mediated HIF-1 inhibitors. SEPT9_V1 protein expression was strongly correlated with susceptibility of a wide range of cancer cells to 2-methoxyestradiol and paclitaxel. Our results revealed that SEPT9_V1 could serve as a biomarker for therapeutic resistance to microtubule disrupting agents.
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