PNAS Yamada et al. 10.1073/pnas.0409818102. |
Fig. 5.
Specificity of emodin. Specificity of inhibitory activity of 10 mM emodin against protein kinases in vitro. Extracellular signal-regulated kinase (ERK) activity was assayed by using the ERK assay kit. The value for total enzyme activity was 230 nmol per min per mg of protein. p38-regulated/activated kinase (p38) activity was assayed by using the p38alpha assay kit. The value for total enzyme activity was 75 nmol per min per milligram of protein. S6 kinase (S6K) activity was assayed by using the p70 S6 kinase assay kit. The value for total enzyme activity was 16.4 pmol per min per mg of protein. cAMP-dependent protein kinase (PKA) activity was assayed by using the PKA assay kit. The value for total enzyme activity was 8.9 mmol per min per mg of protein. Protein kinase C (PKC) activity was assayed by using the PKC assay kit. The value for total enzyme activity was 13.8 mmol per min per mg of protein. c-Src kinase (Src) activity was assayed by using the Src assay kit. The value for total enzyme activity was 439 nmol per min per mg of protein. All assay kits were purchased from Upstate Biotechnology. These kinase activities were assayed according to the manufacturers instructions.
Table 1. Sequences of PCR primers
Gene | Sequences | |
Forward | Reverse | |
Osteopontin | acacaagcagacgttttgac | actgggatgaccttgatagc |
CK2 a | acatcatcacacttgcagac | gcaactcggacattatactc |
TGF b-stimulated clone 22 | acgcttccgtgagacttgac | tccacttcctctctaactgc |
TGF b1 | agtggctgtcttttgacgtc | ctgtcacaagagcagtgagc |
RhoB | ccgtgttcgagaactatgtg | acataaggatgacgtcggtg |
Cathepsin D | aacagtgacaagtccagcac | aacttggctgcgatgaatac |
Collagen IV a1 | ggtgtcaaaggagaagcagg | cctttgtctcctttggtgcc |
c-fos | gttccttctatgcagcagac | cagtataggtagtgcagctg |
Egr-1 | ccttcgctcactccactatc | taaggtggtcactacgactg |
Elk-1 | gctgaacaagaagtctcacc | agtgctccagaaatggatgc |
TNF a | tccctctcatcagttccatg | tgggagtagataaggtacag |
MCP-1 | agagagagatctgtgctgac | cacattcaaaggtgctgaag |
Fibronectin | cgaccgatgccaagattcag | taggtctccacctgagaatg |
Connective tissue growth factor | ccgactggaagacacatttg | ccagcctgcagaaggtattg |
Platelet-derived growth factor B | gagctggacttgaacatgac | aagttggcattggtgcgatc |
G3PDH | tccgttgtggatctgacatg | ggagttgctgttgaagtcac |
The PCR conditions were 40 cycles of the following protocol: 10 s denaturation at 95°C and 20 s annealing at 58°C, followed by 20 s extension at 72°C.
Table 2. Genes differentially expressed in anti-GBM GN or prednisolone-treated GN rats
GeneBank Accession no. | Gene | A | B | C | ||
Anti-GBM | +Prednisolone | |||||
M14656 | Osteopontin | 17.0 | ¯ | 32.3 ± 1.5** | 15.9 ± 3.1## | |
L15618 | CK2 a | 4.7 | ¯ | 2.6 ± 0.0** | 1.5 ± 0.3## | |
L12459 | Lysozyme | 4.3 | ¾ | |||
L25785 | TGF b-stimulated clone 22 | 4.0 | ¯ | 6.0 ± 0.2** | 3.9 ± 0.2## | |
U41341 | Calgizzarin | 3.9 | ¯ | |||
NM_013043 | TGF- b1 | 3.8 | ¯ | 6.8 ± 0.2** | 3.8 ± 0.5## | |
AJ223812 | Caldesmon | 3.6 | ¯ | |||
Y00441 | b 2-microglobulin | 3.4 | ¯ | |||
M74295 | RhoB | 3.3 | ¯ | 6.4 ± 0.4** | 4.2 ± 0.8# | |
X54467 | Cathepsin D | 3.3 | ¯ | 6.0 ± 0.6** | 3.6 ± 0.1## | |
X63535 | Ufo | 2.8 | ¯ | |||
Z11663 | CD24 antigen | 2.7 | ¯ | |||
AL121748 | Neuropilin 1 | 2.7 | ¾ | |||
X92439 | Collagen IV a1 | 2.5 | ¯ | 6.1 ± 0.5** | 3.8 ± 0.2# | |
X63561 | Elongation factor 1 a | 2.4 | ¯ | |||
NM_010884 | N-myc downstream-regulated 1 | 2.4 | ¯ | |||
AF121213 | Methionine synthase reductase | 2.4 | ¾ | |||
Z31721 | Myosin II | 2.2 | ¯ | |||
AL117694 | a -Actinin | 2.2 | ¯ | |||
AF178845 | Calmodulin | 2.2 | ¾ | |||
NM_008774 | Poly(A)-binding protein | 2.2 | ¾ | |||
M11794 | Metallothionein II | 2.1 | ¾ | |||
D17614 | 14-3-3 protein | 2.1 | ¾ | |||
U09567 | Cysteine-rich protein 1 | 2.1 | ¾ | |||
X56228 | Rhodanese | 2.1 | ¾ | |||
X62908 | Cofilin | 2.0 | ¯ | |||
AF028823 | Tax interaction protein 1 | 2.0 | ¯ | |||
X16957 | Cystatin C | 2.0 | ¾ | |||
U22893 | Y-box protein | 2.0 | ¾ | |||
AF053317 | Organic anion transporter 1 | 0.2 | | |||
U25808 | Kidney specific androgen-regulated protein | 0.3 | | |||
X05080 | b -globin | 0.3 | ¾ | |||
AJ131835 | Ste1 | 0.4 | ¾ | |||
AF167412 | Pendrin | 0.4 | | |||
M25073 | Zn-peptidase aminopeptidase | 0.4 | ¾ | |||
Z50144 | Kynurenine/a -aminoadipate aminotransferase | 0.4 | | |||
AF111160 | Glutathione S-transferase A3 subunit | 0.4 | | |||
K03248 | Phosphoenolpyruvate carboxykinase | 0.4 | ¾ | |||
U20984 | Iintestinal trefoil factor | 0.4 | ¾ | |||
U42719 | C4 complement protein | 0.4 | | |||
AF045464 | Aaflatoxin B1 aldehyde reductase | 0.5 | ¾ | |||
L22191 | g -Glutamylcysteine synthetase light subunit | 0.5 | ¾ | |||
M93301 | Ornithine aminotransferase | 0.5 | |
Column A: GN-related gene expression (Anti-GBM/control). Column B: Prednisolone-related gene expression,
; up-regulated, ¯; down-regulated. ¾; unchanged. Column C: Real-time RT-PCR analysis of the differentially expressed genes identified by cDNA microarray analysis in the renal cortex of anti-GBM GN rats on day 28. Data are the mean ± SEM expressed as fold increase over control values; n = 6 animals. **, P < 0.01 compared with the control group. #, P < 0.05; ##, P < 0.01 compared with the anti-GBM group.