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Table 1 Phytochemical and other substances with off target effects on telomerase

From: Combining old and new concepts in targeting telomerase for cancer therapy: transient, immediate, complete and combinatory attack (TICCA)

Substance

Origin

Mode of Action

Cancer type

References

Epigallocatechin gallate

Camellia sinensis

1,2

BC, ML

[86]

Papaverine

Papaveraceae

1,2

BC

[265]

Quercetin

Tea, onion,wine, flavonoids fruits, vegetables

2,5

CA

[266]

Genistein

Secondary plant metabolites and soybean

1,2

BC

[146]

Genistein

Secondary plant metabolites and soybean

4

BC, CC, LC, OC

[267]

Curcumin

Curcuma longa

1,2

BC, leukemia

[141]

Ginsenoside Rk1

Sun Ginseng

1,2,5

LC

[268]

Allicin and ajoene

Garlic

2,5

GC

[138]

Resveratrol

Hellebores, grapes, peanuts, legumes, red wine

1,2

 

[266]

Silibinin

Silybum marianum

1,2

PC

[269]

Epigallocatechin gallate

Camellia sinensis

3

BT

[270]

Wortmanin

-Pinicillium funiculosum,

-Talaronyces wortmannii

2

Leukemia

[271]

Rapamycin

Streptomyces hygroscopicus

1,2

Glioma, CC

[271, 272]

Trichostatin A

Streptomyces platensis

2

BT (Pediatric)

[271, 272]

1,25-dihydroxyvitamin D3

Endogenous (skin) UV exposure

1,2

OC

[273]

All-trans retinoic acid

Vitamin A derivatives

1,2

BC

[274]

Vitamin E

Plant oils

2

OC

[275]

5-Azacytidine

Synthetic chemical (analog of cytidine)

1

LC, MDS

[276]

Suramin

Synthetic chemical (chemosensitizer)

1

HECC

156]

Rapamycin (Sirolimus)

Streptomyces hygroscopicus

1,2

CC

[272]

Aspirin

NSAID

1,2

CC

[157]

Indomethacin

NSAID

1,2

CC

[157

Tamoxifen

Nonsteroidal antiestrogen

1

LC,BC, EMC

[277]

Melatonin

Tryptophan metabolite (hormone)

1,2

BC

[165]

Cisplatin

Chemotherapeutic drug

1,2

TC, OC, Mult

[164]

Doxorubicin

Cytotoxic anthracycline antibiotic

2

BC, Panc.C, Mult

[278]

  1. 1, Direct inhibition of hTERT activity; 2, Inhibition of hTERT synthesis; 3, Competitive binding with respect to the RNA substrate primer; 4, Disturbance in hTERT translocation to the nucleus.5, Apoptosis induction
  2. BC breast cancer, PC prostate cancer, ML pro-myelocytic leukemia, CA colon adenocarcinoma, CC colorectal cancer, LC lung cancer, OC ovarian cancer, LC liver cancer, BT brain tumor, MDS, myelodysplastic syndrome, HECC human epithelial cell carcinoma, EMC endometrial cancer, TC testicular cancer, Mult, multiple, Panc. C, pancreatic cancer, NSAID non-steroidal anti-inflammatory drug