Table 1 Pre-clinical research targeting cancer stem cells with mTOR inhibitors in vitro depending upon types of cancers.

From: Targeted therapy of cancer stem cells: inhibition of mTOR in pre-clinical and clinical research

Cancer type

Drug name

Target molecules

Co-treatment

Results

Refs

Bone marrow cancer stem cell

S14161

PI3K, AKT, mTOR

-

Reduction in proportion of SP cells

[113]

Breast cancer stem cell

Metformin

mTOR, AMPK

-

Reduction in number and size of tumor spheres

[87, 88]

FEC

Decrease of CSC ability

[89]

Rapamycin

mTORC1

-

Reduction in number of mammospheres

Increase in radio-sensitivity of CSCs

[90]

VS-5584

mTORC1/2, PI3K

-

Reduction in number of tumor spheres

Induction of CSC apoptosis

[86]

Paclitaxel

Reduction of CSC population

CNS cancer stem cell

Alpelisib

PI3K, AKT, mTOR

-

Increase in anti-neoplastic effects of CSCs

[103]

Dactolisib

PI3K, mTOR

-

Reduction in tumorigenicity and proliferation of CSCs

Increase in radio-sensitivity of CSCs

[101, 102]

AZD2014

mTORC1/2

-

Increase in radio-sensitivity of CSCs

[100]

FC85

AKT, mTOR

ISA27

Induction of CSC apoptosis

Reduction of CSC viability

Promotion of CSC differentiation

[96]

Rapamycin

mTORC1

-

Reduction of CSC proliferation

[98, 99]

ATRA

[97]

Colon cancer stem cell

Dactolisib

PI3K, mTOR

-

Reduction of CSC stemness and proliferation

[94]

Increase of CSC differentiation

[93]

PF-04691502

PI3K, mTOR

-

Reduction of CSC proliferation

[95]

Rapamycin

mTORC1

-

Increase of CSC differentiation

[93]

pp242

Reduction in tumor-sphere formation capacity of CSCs

[91, 92]

Torin-1

mTORC2

-

Reduction in growth, motility, invasion and survival of CSCs

[91]

Liver cancer stem cell

Rapamycin

mTORC1

DAPT

Increase of CSC markers

[104]

Temsirolimus

mTORC1

Baicalein

Elimination of dug resistance of CSCs

[105]

Lung cancer stem cell

β-elemene

PI3K, AKT, mTOR

Cisplatin

Induction of CSC apoptosis

[112]

Rapamycin

mTORC1

-

Reduction in sphere formation of CSCs

[111]

Ovarian cancer stem cell

Dactolisib

PI3K, mTOR

Cisplatin

Reduction in colony formation ability, EMT, and marker expression of CSCs

[114]

Pancreas cancer stem cell

AZD8055

mTORC1/2

BMS-777607

Reduction of CSC viability

[109]

Dactolisib

PI3K, mTOR

-

Reduction of tumor growth

Decrease in self-renewal capacity, pluripotency factors, and EMT factors of CSCs

[106]

Rapamycin

mTORC1

-

Reduction in sphere formation and anchorage-independent growth of CSCs

[107]

GANT61

Reduction in sphere formation of CSCs

[108]

Salivary gland

cancer stem cell

Rapamycin

mTORC1

-

Induction of CSC apoptosis

[115]

Temsirolimus

Smooth muscle

cancer stem cell

Dactolisib

PI3K, mTOR

-

Reduction in stemness properties of CSCs

[110]