, Volume 39, Issue 1, pp 172–181 | Cite as

TLR4-MyD88-TRAF6-TAK1 Complex-Mediated NF-κB Activation Contribute to the Anti-Inflammatory Effect of V8 in LPS-Induced Human Cervical Cancer SiHa Cells

  • Aiqin HeEmail author
  • Rui Ji
  • Jia Shao
  • Chenyun He
  • Ming Jin
  • Yunzhao XuEmail author


The synthetic compound 7-4-[Bis-(2-hydroxyethyl)-amino]-butoxy-5-hydroxy-8-methoxy-2-phenylchromen-4-one (V8) is a novel flavonoid-derived compound. In this study, we investigated the effects of V8 on Toll-like receptor 4 (TLR4)-mediated inflammatory reaction in human cervical cancer SiHa cells and lipopolysaccharide (LPS)-induced TLR4 activity in cervical cancer SiHa (HPV16+) cells, but not in HeLa (HPV18+) and C33A (HPV−) cells. In addition, V8 inhibited LPS-induced expression of TLR4, MyD88, TRAF6 and phosphorylation of TAK1, and their interaction with TLR4 in SiHa cells, resulting in an inhibition of TLR4-MyD88-TRAF6-TAK1 complex. Moreover, V8 blocked LPS-induced phosphorylation of IκB and IKK, resulting in inhibition of the nuclear translocation of P65-NF-κB in SiHa cells. We also found that V8 reduced the expression of NF-κB target genes, such as those for COX-2, iNOS, IL-6, IL-8, CCL-2, and TNF-α in LPS-stimulated SiHa cells. These results suggested that V8 exerted an anti-inflammatory effect on SiHa cells by inhibiting the TLR4-MyD88-TRAF6-TAK1 complex-mediated NF-κB activation.


V8 cervical cancer TLR4 NF-κB inflammation HPV16 


Conflict of Interest

The authors have no conflicting financial interests.


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Department of Gynecology Oncology, Nantong Tumor HospitalTumor Hospital Affiliated to Nantong UniversityNantongChina
  2. 2.Department of Obstetrics and GynecologyAffiliated Hospital of Nantong UniversityNantongChina

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