Targeting STING with cyclic di-GMP greatly augmented immune responses of glycopeptide cancer vaccines

Chem Commun (Camb). 2018 Aug 23;54(69):9655-9658. doi: 10.1039/c8cc04860f.

Abstract

Cyclic di-GMP (CDG) was applied to MUC1 glycopeptide-based cancer vaccines with physical mixing and built-in (at 2'-OH of CDG) strategies for activating the STING pathway. CDG in both strategies behaved as a potent immunostimulant and contributed to high titers of IgG antibodies and the expression of multiple cytokines.

MeSH terms

  • Adjuvants, Immunologic / chemical synthesis
  • Amino Acid Sequence
  • Animals
  • B7-2 Antigen / immunology
  • Cancer Vaccines / immunology*
  • Cancer Vaccines / pharmacology
  • Cyclic GMP / analogs & derivatives*
  • Cyclic GMP / chemical synthesis
  • Cyclic GMP / immunology
  • Cytokines / metabolism
  • Female
  • Glycopeptides / chemical synthesis
  • Glycopeptides / immunology*
  • Humans
  • Immunity, Cellular / drug effects
  • Immunity, Humoral / drug effects
  • Immunoglobulin G / metabolism
  • Immunoglobulin M / metabolism
  • MCF-7 Cells / immunology
  • Macrophage Activation / drug effects
  • Membrane Proteins / agonists
  • Membrane Proteins / metabolism*
  • Mice
  • Mice, Inbred BALB C
  • Mucin-1 / immunology
  • Peptide Fragments / chemical synthesis
  • Peptide Fragments / immunology
  • RAW 264.7 Cells / immunology
  • Signal Transduction / drug effects

Substances

  • Adjuvants, Immunologic
  • B7-2 Antigen
  • Cancer Vaccines
  • Cd86 protein, mouse
  • Cytokines
  • Glycopeptides
  • Immunoglobulin G
  • Immunoglobulin M
  • MUC1 protein, human
  • Membrane Proteins
  • Mucin-1
  • Peptide Fragments
  • STING1 protein, human
  • Sting1 protein, mouse
  • bis(3',5')-cyclic diguanylic acid
  • Cyclic GMP