Review Article

ErbB Proteins as Molecular Target of Dietary Phytochemicals in Malignant Diseases

Table 8

The main effects of combination of EGCG or curcumin with anticancer drugs.

Anticancer drugBiological system/modelDosesMain resultsRef

EGCG: in vitro experiments
Oxaliplatin, cisplatinA2780 and A2780R ovarian cancer cell lines parental and cisplatin resistant, respectivelyED50, ED75, ED90 (ED, effective dose)Increased synergism at ED50 after the sequential administration of the phytochemical, at 4 h after oxaliplatin or cisplatin treatment (increased growth inhibitory effects)[154, 155]
Oxaliplatin, cisplatinDLD-1, HT-29 human colorectal adenocarcinoma cells100 μM EGCG
20 μM oxaliplatin or cisplatin
Decreased cell proliferation, induced autophagy[156]

Curcumin: in vitro experiments
Carboplatin, etoposide, vincristineY 79 retinoblastoma cells5–10 μM curcumin
5–10 μg/mL carboplatin
0.1–5 μg/mL etoposide
0.1–5 nM vincristine
Increased apoptosis
Curcumin increased the sensitivity of retinoblastoma cells to carboplatin, etoposide, and vincristine
[183]
OxaliplatinA2780 and A2780R ovarian cancer cell lines parental and cisplatin resistant, respectivelyED50, ED75, ED90 (ED, effective dose)Increased synergism at ED50 after the sequential administration of the phytochemical, at 4 h after oxaliplatin (increased growth inhibitory effects)[154, 155]
CisplatinA2780R cisplatin resistant human ovarian cancer cell line1–10 μM curcumin analogs
10 μg/mL cisplatin
Cotreatment increased cytotoxicity (MTT assay), induced G2/M arrest, increased p21 and p53 levels, decreased Bcl-2 and Bcl-XL levels, increased caspase-9, caspase-3, and caspase-7 and PARP levels, increased apoptosis, and reduced STAT3 level[157]

Curcumin: in vivo experiments
CisplatinXenograft tumor in nude mice with A2780R cells Cisplatin resistant ovarian cancer cells100 ppm curcumin analogs in feed
4 mg/kg cisplatin i.p.
Cotreatment reduced the tumor volume, decreased constitutive activation of pSTAT3-Tyr705 and pSTAT3-Ser727, decreased Bcl-2 and Bcl-XL levels, and increased PARP levels[157]