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Table 2 Double-node resistance mechanisms to PI3K inhibitors ordered by their effect on Apoptosis

From: A network modeling approach to elucidate drug resistance mechanisms and predict combinatorial drug treatments in breast cancer

Perturbation 1

Perturbation 2

Apoptosisnorm

Proliferationnorm

Mechanism 1

Mechanism 2

MAPK = 2

MYC = 2

0.00

0.62

MAPK

ER

MAPK = 2

ER_transcription = 2

0.00

0.55

MAPK

ER

MAPK = 2

FOXO3 = 1, FOXO3_Ub = 0

0.00

0.50

MAPK

AKT

MAPK = 1

SGK1 = 1

0.00

0.25

MAPK

AKT

HER2 = 1

HER3 = 2

0.06

0.51

RTK

RTK

MAPK = 1

FOXO3 = 0, FOXO3_Ub = 1

0.08

0.13

MAPK

AKT

SGK1 = 1

ER_transcription = 2

0.11

0.55

AKT

ER

MAPK = 1

translation = 1

0.13

0.50

MAPK

mTORC1

MAPK = 1

TSC = 0

0.13

0.50

MAPK

mTORC1

MAPK = 1

PRAS40 = 0

0.13

0.50

MAPK

mTORC1

MAPK = 1

mTORC1 = 1

0.13

0.50

MAPK

mTORC1

SGK1 = 1

MYC = 2

0.25

0.63

AKT

ER

SGK1 = 1

FOXO3 = 1

0.37

0.50

AKT

AKT

S6K = 1

EIF4F = 1

0.38

0.50

mTORC1

mTORC1

HER2 = 1

ER_transcription = 2

0.49

0.69

RTK

ER

  1. The sustained states of the two nodes indicated in the first two columns yield a decrease in Apoptosisnorm from 0.7 and/or an increase in Proliferationnorm from 0.25 (the activities of these nodes under PI3K inhibition alone). Perturbations that involve nodes of the apoptosis or proliferation pathway are not included in this table. Certain node perturbations that are equivalent in the network sense and lead to the same effect are grouped