Knockdown of the interleukin-6 receptor alpha chain of dendritic cell vaccines enhances the therapeutic potential against IL-6 producing tumors

Wonchan Hwang, Keunok Jung, Youkyoung Jeon, Shik Yun, Tae Woo Kim, Inhak Choi

Research output: Contribution to journalArticle

6 Citations (Scopus)


Tumor microenvironment has emerged as one of the major obstacles against the clinical efficacy of dendritic cell (DC) vaccines. Tumor-derived IL-6 may inhibit the differentiation of hematopoietic progenitor cells into DCs and suppress DC maturation, rendering DCs tolerogenic. We hypothesized that silencing the IL-6 receptor alpha chain (IL-6Rα) would restore the functional competence of DC vaccines in mice with an IL-6-producing TC-1 tumor, and eventually give rise to protective immunity. We found that the IL-6Rα knockdown-DC vaccine significantly enhanced the frequency of tumor-specific CD8 + CTLs-producing effector molecules such as IFN-γ, TNF-α, FasL, perforin, and granzyme B, and generated more CD8 + memory T cells, leading to the substantially prolonged survival of TC-1 tumor-bearing mice.

Original languageEnglish
Pages (from-to)34-44
Number of pages11
Issue number1
Publication statusPublished - 2010 Dec 10



  • Dendritic cell vaccine
  • IL-6 receptor
  • Knockdown

ASJC Scopus subject areas

  • Immunology and Microbiology(all)
  • Infectious Diseases
  • Public Health, Environmental and Occupational Health
  • veterinary(all)
  • Molecular Medicine

Cite this