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Table 4 Natural agents used in combination therapies to enhance ICD

From: Stimulators of immunogenic cell death for cancer therapy: focusing on natural compounds

Agent

Combination

Cell line

Effect

Ref

Sunitinib

Paclitaxel

MDA-MB-231 cells

Synergistic increase of apoptosis, ICD response and improving DC maturation tumor and immunogenicity

[159]

Curcumin

Irinotecan

CT-26 colon carcinoma cells

Upregulation of ICD hallmarks such as CRT and HMGB1.

Enhancing the ICD effect

[137]

Paclitaxel

MCF-7 breast cancer cells

Improving antitumor impacts of paclitaxel by increasing ROS generation

Suppression of paclitaxel resistance through the blockade of P-gp

[138]

Radiation therapy

Normoxic or hypoxic glioma cells

Increase of radiation-mediated apoptosis, CRT exposure, ATP and HSP70 releases, and ER stress

[152]

mEHT (Modulated electro-hyperthermia) plus resveratrol

CT-26 colon carcinoma cells

Synergistic upregulation of HSP release and immune responses, that enhances anti-tumor efficacy

[160]

Silibinin

Doxorubicin

CT26 colon cancer cells

B16F10 cells

4T1 Breast cancer cells

Synergistic increase of ICD induction by Doxorubicin, and elevates the expression level of CRT, HMGB1, and HSP70.

Produce higher antitumor efficacy

[143, 161]

Ginsenoside Rh2

Gemcitabine

Murine pancreatic cancer

Increasing tumor immunogenicity,

Reducing the level of immunosuppressive factors

[162]

Ginsenoside Rg3

Photodynamic therapy (PDT)

Glioblastoma cells

Potentiation of the effect of chemotherapy and photoimmunotherapy

[139]

Gefitinib

NSCLC cells (H1299 and A549)

Sensitization to the treatment with Gefitinib, Enhancing Gefitinib‑mediated tumor cytotoxicity

[163]

Doxorubicin

4T1 cells

Increasing DOX-induced ICD

[164]

Quercetin

CT26 and HCT116 cell line

Increasing the effects of Rg3-induced ICD by elevating ROS generation

[153]

Paclitaxel

BGC-823 gastric cancer cells

Synergistic inhibition of growth of human gastric cancer cells

[165]

Shikonin

Mitoxantrone

B16F10 cells

RM1 prostate cancer cells

Improving the effects of therapeutic and cytotoxic agents

[134]

Doxorubicin

A549 lung cancer cells

Induction of apoptosis, damaging the mitochondrial membrane integrity, decreasing ATP levels, inhibition of glycolysis, and preventing ABC transporter expression

[166]

Arsenic trioxide

Human HCC cell lines

Synergistic anticancer effects

[167]

Alantolactone

Quercetin

CT26-FL3 cells

Quercetin enhances ICD induction characterized by CRT exposure and HMGB1 release.

80]

Lentinan

Oxaliplatin

EC-109 Esophageal Tumor Cells

Inhibition of tumor proliferation, induction of apoptosis

lentinan sensitisize cells by activation of ICD

[168]

Celastrol

Mitoxantrone

desmoplastic melanoma cells

Synergistically inducing ICD

[169]

Plumbagin

Dihydrotanshinone I

Hepatocarcinoma (HCC) cell

Formation of more ROS, inducing ICD

[170]

Digoxin

Cisplatin

B16F10 cells

Induction of ICD via CRT translocation and ATP release

[96]

Docosahexaenoic acid (DHA) marine-based compound

Paclitaxel

MCF-7 cells

Significant inhibition of tumor volume growth

Sensitizing tumor cells to ptx

[171]

Oxaliplatin

HCT116 cells

Promoting oxaliplatin-mediated autophagic cell death by enhancing ER stress

[172]

Apatinib

MDA-MB-231 cells

Increasing inhibition on cell proliferation and migration

[173]