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Table 1 Summary of data for all inhibitors

From: Screening of protein kinase inhibitors identifies PKC inhibitors as inhibitors of osteoclastic acid secretion and bone resorption

Target

Inhibitor

IC50 (M)

Acridine orange 45 min.

Acridine orange Quenching

Influx - % Inh. at 10 μM

Influx Quenching

Resorption - % Inh at 10 μM

Alamar - % Inh. at 10 μM

PDGFRK

AG-370

20

No

No

20

Yes

0

0

 

AG-1296

1

No

No

15

Yes

0

0

EGFRK/PDGFRK

AG-494

1.2

No

No

55

No

0

0

 

Tyrphostin 46

9.2

No

No

0

No

0

0

EGFRK

Lavendustin A

0.011

No

No

0

No

0

0

 

RG-14620

3

No

No

0

No

0

0

 

Tyrphostin 23

35

No

No

45

Yes

0

0

 

Tyrphostin 25

3

No

No

34

Yes

0

0

 

Tyrphostin 47

2.4

No

No

85

No

0

0

 

Tyrphostin 51

0.8

No

No

0

No

0

0

 

Tyrphostin AG1478

0.003

No

No

0

No

43

0

 

Erbstatin (a)

0.77

No

No

0

No

0

0

 

Erlotinib

1

No

No

0

No

100

100

NGFRK

AG-879

10

No

No

100

No

22

0

EGFRK/CaMKII

Lavendustin C

2

No

No

0

No

0

0

CaMKII

KN-62

0.9

No

No

0

No

63

0

 

KN-93

0.37

No

No

40

No

0

 

MEK1/2

PD-98059

2

No

No

0

No

0

0

 

U-0126

0.072

No

No

0

No

0

0

p38MAPK

SB203580

0.07

No

No

0

No

0

0

PKA, PKG, MLCK, PKC

H-7

3.0

No

No

0

No

0

0

 

H-9

1.9

No

No

0

No

0

0

PKC

GF-109203X

0.02

Yes

No

100

No

100

0

 

Hypericin

3.4

No

No

82

Yes

100

95

 

Ro 31-8220

0.01

No

No

79

Yes

100

100

 

Sphingosine

1-3

No

No

15*

No

0

0

 

Palmitoyl-DL-

25

No

No

17*

No

0

0

 

Carnitine-Cl

       

PKCδ

Rottlerin

3-6

Yes

No

100

No

100

90

PKCα/γ

HBDDE

43

No

No

58

Yes

0

0

PKA

H-89

0.048

No

No

0

No

0

0

PKA/PKG

H-8

0.48

No

No

0

No

0

0

 

HA-1004

30

No

No

0

No

0

0

 

HA-1077

1.6

No

No

0

No

0

0

HER1-2

AG-825

0.35

No

No

43

Yes

0

0

Tyrosine

Tyrphostin AG1288

21

No

No

88

No

0

0

Kinases

Tyrphostin AG1295

25

No

No

0

No

0

0

 

Genistein

0.002

No

No

0

No

0

0

IRK

HNMPA

10

No

No

0

No

0

0

JNK

SP 600125

0.04

No

No

0

No

0

0

p56 lck

Damnacanthal

0.017

No

No

0

No

47

0

Syk

Piceatannol

10

No

No

0

No

0

0

Src family

PP1

0.005

No

No

0

No

78

0

 

PP2

0.004

No

No

0

No

100

45

JAK-2

AG-490

~5

No

No

0

No

0

0

ERK2, CK1, CK2

5-Iodotubercidin

0.4

No

No

0

No

100

100

cRAF

GW 5074

0.009

No

No

80

Yes

58

0

IKK pathway

BAY 11-7082

5

No

No

100

No

0

0

GSK-3β/CDK5

Indirubin-3'-monoxime

0.022

No

No

0

No

72

0

mTOR

Rapamycin

0.010

No

No

46

No

40

0

Neg. Cont. Tyr Kinase Inhibitor

Tyrphostin 1

NA

No

No

0

No

0

0

Neg. Cont. Genistein

Diadzein

NA

No

No

0

No

0

0

  1. The table summarizes data for the acidification assay using acridine orange (45 minute incubation) and the %-inhibition in the acid influx assay at 10 μM. It is stated whether the compounds quench the acridine orange signal. The %-inhibition in the bone resorption and AlamarBlue assay are also provided for each inhibitor tested. *Indicates auto fluorescence of the compound. Text in italics shows the compounds shown in the figures. # indicates lowest IC50 values obtained in relevant assays http://www.enzolifesciences.com. NA indicates not applicable (for negative controls).