Sulfarotene Inhibits Colorectal Cancer via Mitigating Natural-Killer-Cell-Induced Stemness

Area of Science:

• Oncology
• Immunology
• Cancer Stem Cell Biology

Background:

• Tumor cell stemness drives colorectal cancer (CRC) recurrence, metastasis, and mortality.
• Immune-active cells, like natural killer (NK) cells, can induce tumor cell stemness, leading to treatment resistance.

Purpose of the Study:

• To investigate the effect of NK cell co-culture on CRC cell stemness.
• To evaluate the efficacy of sulfarotene in reversing NK cell-induced stemness in CRC.
• To assess sulfarotene's potential in overcoming chemotherapy resistance in CRC.

Main Methods:

• Co-culture of CRC cell lines with NK cells, with and without sulfarotene.
• Assessment of stemness markers in CRC cells.
• Chemotherapy resistance assays using oxaliplatin and irinotecan.
• In vivo evaluation using a CRC xenograft model.

Main Results:

• NK cell co-culture significantly increased stemness markers in CRC cells.
• CRC cells exhibited enhanced resistance to oxaliplatin and irinotecan post-NK cell co-culture.
• Sulfarotene effectively reversed NK cell-induced stemness in both in vitro and in vivo models.
• Sulfarotene demonstrated efficacy in overcoming chemotherapy resistance.

Conclusions:

• Sulfarotene is a promising agent for reversing NK cell-induced stemness in colorectal cancer.
• Sulfarotene can overcome treatment resistance associated with NK cell activation in CRC.
• This study highlights sulfarotene's potential as an immunotherapeutic strategy to enhance NK-cell-mediated anti-cancer immunity.