ArticleBMC cancer2026
Therapeutic efficacy of cancer stem cell-based vaccine in colorectal murine model: reduced tumor growth and prolonged survival.
Article in BMC cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundVarious forms of cancer immunotherapy are promising in overcoming the obstacles posed by resistance to conventional chemo- and radiotherapy. Cancer vaccines could serve as beneficial adjuncts to conventional therapies, offering the potential for fine-tuning to reduce relapse and related mortality. Continuing prior investigations, a therapeutic colorectal cancer stem cell (CSC)-based vaccine was developed to explore whether this vaccination could inhibit the formation and prolong survival rates in a mouse model of colorectal cancer.
methodsCSCs were enriched from the CT-26 cell line using sphere formation assay and characterized by real-time q-PCR for stemness genes (Oct4, Sox2, and Nanog) and tumorigenesis assay in syngeneic BALB/c mice. Different groups of mice were intraperitoneally immunized with the CSC lysate-based vaccine, the parental cell lysate-based vaccine, and control groups following subcutaneous challenge with CT-26 cells. Beyond analyzing tumor growth and survival rates, histological analysis of tumor tissues was conducted using comprehensive hematoxylin and eosin (H&E) staining, and antibody responses in vaccinated mice were evaluated by flow cytometry and immunofluorescence.
resultsImmunization of tumor-bearing mice with the CT-26 CSC lysate-based vaccine caused delayed tumor formation, reduced tumor growth rate, and enhanced survival rate compared to the control groups. The histological responses observed in the lysate vaccination subgroups indicated a potent immune response. Furthermore, flow cytometry and immunofluorescence analyses demonstrated the production of anti-CSC and anti-parental cell antibodies in mice immunized with CT-26 CSC and parental cell lysates.
conclusionThese findings suggest that targeting CSCs using a CSC lysate-based vaccine can stimulate cellular and humoral immunity and represent a novel therapeutic approach to complement conventional antitumor therapies.
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