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Nav1.5-E3 antibody inhibits cancer progression

Rui Gao1, Ting Cao1, Hui Chen1

  • 1Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.

Translational Cancer Research
|February 4, 2022
PubMed
Abstract

Insights

Nav1.5, a sodium channel overexpressed in cancer, was targeted by E3Ab. This antibody inhibited cancer cell migration, invasion, and tumor growth in vivo, suggesting E3Ab as a potential cancer therapy.

Area of Science:

  • Oncology
  • Molecular Biology
  • Immunology

Background:

  • Voltage-gated sodium channel Nav1.5 is overexpressed in cancer cells, correlating with disease progression.
  • Nav1.5-third extracellular region antibody (E3Ab) specifically targets Nav1.5, inhibiting its function.
  • The therapeutic potential of E3Ab in cancer treatment warrants investigation.

Purpose of the Study:

  • To evaluate the therapeutic potential of E3Ab in preclinical cancer models.
  • To assess the effect of E3Ab on cancer cell behavior and tumor growth.

Main Methods:

  • Nav1.5 expression was confirmed in Caov-3 cells via immunocytochemistry.
  • In vivo tumor growth was assessed using a Caov-3 xenograft nude mouse model.
  • In vitro assays evaluated the impact of E3Ab on cancer cell migration, invasion, and proliferation, with MMP-9 expression analyzed by Western blot.

Main Results:

  • Caov-3 cells exhibited high Nav1.5 expression, with confirmed binding by E3Ab.
  • E3Ab and lidocaine significantly inhibited Caov-3 xenograft tumor growth and reduced mitotic activity in vivo.
  • In vitro, E3Ab and lidocaine suppressed cancer cell migration and invasion.

Conclusions:

  • E3Ab demonstrates significant anti-cancer effects by inhibiting tumor growth, migration, and invasion.
  • These findings highlight E3Ab as a promising therapeutic antibody for cancers expressing Nav1.5.
Keywords:
Ion channelNav1.5cancerinvasionmigration

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