Anti-colorectal cancer activity of mannatide from spent brewer's yeast by regulating immune cells and immune function in the tumor microenvironment

Anti-colorectal cancer activity of mannatide from spent brewer's yeast by regulating immune cells and immune function in the tumor microenvironment

Chemotherapy and radiotherapy are generally accompanied by adverse effects, which reduce tolerance to cancer therapies. Immunonutrition improves the clinical outcomes of cancer patients. Hence, natural immunomodulator is therefore considered as a favorable alternative. This study aimed to elucidate...

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Veröffentlicht in:International journal of biological macromolecules 2024-11, Vol.280 (Pt 1), p.135531, Article 135531
Hauptverfasser: Li, Fei, Sun, Xiaopeng, Gao, Xiang, Zhao, Shuang, Tavakoli, Samad, Du, Zubo, Wei, Yuxi
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Anti-colorectal cancer
Immunotherapy
Mannatide
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container_issue Pt 1
container_start_page 135531
container_title International journal of biological macromolecules
container_volume 280
creator Li, Fei
Sun, Xiaopeng
Gao, Xiang
Zhao, Shuang
Tavakoli, Samad
Du, Zubo
Wei, Yuxi
description Chemotherapy and radiotherapy are generally accompanied by adverse effects, which reduce tolerance to cancer therapies. Immunonutrition improves the clinical outcomes of cancer patients. Hence, natural immunomodulator is therefore considered as a favorable alternative. This study aimed to elucidate the anti-colorectal cancer (CRC) effect of mannatide (MTE) from the immunostimulatory perspective. MTE (concentrations≥1200 μg/mL) significantly inhibited HT-29 cells viabilities compared with the 5-fluorouracil (5-FU) group and all predetermined concentrations of MTE promoted the proliferation of RAW264.7 (p 
doi_str_mv 10.1016/j.ijbiomac.2024.135531
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Immunonutrition improves the clinical outcomes of cancer patients. Hence, natural immunomodulator is therefore considered as a favorable alternative. This study aimed to elucidate the anti-colorectal cancer (CRC) effect of mannatide (MTE) from the immunostimulatory perspective. MTE (concentrations≥1200 μg/mL) significantly inhibited HT-29 cells viabilities compared with the 5-fluorouracil (5-FU) group and all predetermined concentrations of MTE promoted the proliferation of RAW264.7 (p &lt; 0.01). Moreover, MTE treatment suppressed tumor growth, decreased leukocyte and platelet count, and regulated immune organ indexes compared with the model group. In comparison of Model and 5-FU groups, MTE treatment reshaped tumor-associated macrophages (TAMs) from alternatively activated macrophages (M2)-like into classical activated macrophages (M1)-like phenotype. Also, it increased the proportion of CD8+ and CD4+ T cells accompanied by secreting pro-inflammatory cytokines (interferon (IFN)-γ and tumor necrosis factor (TNF)-α) and decreasing pro-inflammatory cytokines (interleukin (IL)-4, interleukin (IL)-6, arginine (Arg)-1, and cyclooxygenase (COX)-2) to reduce immunosuppression. Moreover, MTE-administrated alleviated intestinal mucositis and improved the prognostic indexes compared with the 5-FU group. Notably, the ability of low-dose MTE to regulate immune cells and the function of the tumor microenvironment was higher than that of high-dose. 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Immunonutrition improves the clinical outcomes of cancer patients. Hence, natural immunomodulator is therefore considered as a favorable alternative. This study aimed to elucidate the anti-colorectal cancer (CRC) effect of mannatide (MTE) from the immunostimulatory perspective. MTE (concentrations≥1200 μg/mL) significantly inhibited HT-29 cells viabilities compared with the 5-fluorouracil (5-FU) group and all predetermined concentrations of MTE promoted the proliferation of RAW264.7 (p &lt; 0.01). Moreover, MTE treatment suppressed tumor growth, decreased leukocyte and platelet count, and regulated immune organ indexes compared with the model group. In comparison of Model and 5-FU groups, MTE treatment reshaped tumor-associated macrophages (TAMs) from alternatively activated macrophages (M2)-like into classical activated macrophages (M1)-like phenotype. Also, it increased the proportion of CD8+ and CD4+ T cells accompanied by secreting pro-inflammatory cytokines (interferon (IFN)-γ and tumor necrosis factor (TNF)-α) and decreasing pro-inflammatory cytokines (interleukin (IL)-4, interleukin (IL)-6, arginine (Arg)-1, and cyclooxygenase (COX)-2) to reduce immunosuppression. Moreover, MTE-administrated alleviated intestinal mucositis and improved the prognostic indexes compared with the 5-FU group. Notably, the ability of low-dose MTE to regulate immune cells and the function of the tumor microenvironment was higher than that of high-dose. 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subjects Anti-colorectal cancer
Immunotherapy
Mannatide
title Anti-colorectal cancer activity of mannatide from spent brewer's yeast by regulating immune cells and immune function in the tumor microenvironment
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