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19
Figure 1 Formation of the oxidized metabolites of thiamine.
A, Total LC-ESI-MS/MS ion chromatograms of reaction mixtures of thiamine with ROS/ROS
donors. Thiamine (1 mM) was incubated with HOCl (100 μM), H2O2 (100 μM), EP reagent (100
μM), AAPH (100 μM), or Fe2+ (5 μM) /ascorbic acid (AsA) (100 μM) for 24 h at 37 oC. B,
Chemical structures of thiamine and its oxidized metabolites.
Figure 2 Co-injection experiments on the LC-ESI-MS/MS of authentic oxidized thiamine
metabolites with the reaction mixture of thiamine with HOCl.
A, Co-injection of authentic FAP and the reaction mixture of thiamine with HOCl. SRM for FAP
10
(m/z 167 > 122). B, Co-injection of authentic TSA and the reaction mixture of thiamine with
11
HOCl. SRM for TSA (m/z 331 > 122). C, Co-injection of authentic TSE and the reaction mixture
12
of thiamine with HOCl. SRM for TSE (m/z 297 > 122).
13
14
Figure 3 HOCl scavenging activity of thiamine.
15
HOCl scavenging activity was evaluated by measuring the residual HOCl in the reaction mixture.
16
HOCl (100 μM) was incubated with 100 μM of thiamine, TPP, cysteine, or methionine for 5min.
17
18
Figure 4 Quantification of the oxidized thiamine metabolites by LC-ESI-MS/MS with SRM
19
mode.
20
A, Proposed fragmentation pattern of FAP (upper) and FAP-d3 (lower). B, LC-ESI-MS/MS
21
analysis of FAP. Upper, SRM for FAP (m/z 167 > 122); lower, SRM for FAP-d3 (m/z 170 > 125).
22
C, Proposed fragmentation pattern of TSA (upper) and [13C3]-TSA (lower). Asterisk indicates 13C
23
label. D, LC-ESI-MS/MS analysis of TSA. Upper, SRM for TSA (m/z 331 > 122); lower, SRM
24
for [13C3]-TSA (m/z 334 > 122). E, Proposed fragmentation pattern of TSE (upper) and [13C3]-TSE
25
(lower). Asterisk indicates 13C label. F, LC-ESI-MS/MS analysis of TSE. Upper, SRM for TSE
26
(m/z 297 > 122); lower, SRM for [13C3]-TSE (m/z 300 > 122).
27
28
Figure 5 Quantitative analysis of the oxidized thiamine metabolites generated by the
29
reaction of thiamine with HOCl.
30
A, HOCl-concentration-dependent formation of the oxidized thiamine products. Thiamine (1 mM)
31
was incubated with the indicated concentrations of HOCl (0-250 μM) for 24 h at 37 oC. B, Time-
32
dependent formation of the oxidized thiamine products. Thiamine (1 mM) was incubated with
33
HOCl (100 μM) for the indicated times (0-24 h) at 37 oC. Thiamine and its oxidized products
34
were quantified by LC-ESI-MS/MS with SRM mode. Data are mean ± SD of three independent
35
experiments.
20
Figure 6 Formation of the oxidized thiamine metabolites in the activated neutrophil-like
cells.
A, Time-dependent formation of the oxidized thiamine metabolites. The neutrophil-differentiated
HL-60 cells were stimulated with PMA (100 nM) for indicated times (0-6 h), and the resulting
culture supernatants were analyzed by LC-ESI-MS/MS with SRM mode. B, Effect of MPO
inhibitor 4-ABH on PMA-induced formation of oxidized thiamine metabolites in the neutrophil-
differentiated HL-60 cells. The cells were stimulated with PMA (100 nM) together with or
without 4-ABH (100 μM) for 6 h. The culture supernatants were analyzed by LC-ESI-MS/MS in
10
the SRM mode. ***, p < 0.005. N.D., not detected. Data are mean ± SD of three independent
11
experiments.
12
13
14
Figure 7 Formation of the oxidized thiamine metabolites in the LPS-stimulated mouse lung
15
tissue.
16
A, MPO expression ratio in the lung tissues of the LPS-treated mice. The expression levels of
17
MPO and β-actin were analyzed by western blot. Values are mean ± SD (n = 6). ***, p < 0.005.
18
B, Quantification of thiamine and its oxidized metabolites in the lung tissues of the LPS-
19
stimulated or vehicle control mice. Values are mean ± SD (n = 6). **, p < 0.01
20
21
Figure 8 A proposed mechanism for the formation of oxidized thiamine metabolites derived
22
from the reaction of thiamine and HOCl.
23
Thiol derived from thiamine could be converted to FAP via thioketone. Sulfenyl chloride could be
24
converted to TSST or TSE. Furthermore, TSST reacts with HOCl and could be transformed to
25
TSA or TSE.
26
21
Thiamine
+Fe2+/AsA
Thiamine
+ AAPH
NH2
Intensity (×108)
+ EP
NH
FAP (peak A)
+H2O2
TSST
+ HOCl
TSA (peak B)
TSST
NH2
Control
Retention time (min)
S O
TSE (peak C)
1.5
Authentic FAP
0.5
Authentic TSA
Thiamine/HOCl
reaction mixture
10
25
Authentic TSA
20
15
10
10
Thiamine/HOCl
reaction mixture
Relative intensity (x106)
Relative intensity (x107)
Relative intensity (x107)
12
0.2
Thiamine/HOCl
reaction mixture
0.1
Retention time (min)
Authentic TSE
Thiamine/HOCl
reaction mixture
Relative intensity (x107)
14
10
Relative intensity (x107)
Authentic FAP
Thiamine/HOCl
reaction mixture
Relative intensity (x106)
Relative intensity (x106)
Relative intensity (x107)
Relative intensity (x107)
Authentic TSE
0.8
Thiamine/HOCl
reaction mixture
0.6
0.4
0.2
Retention time (min)
Retention time (min)
100
HOCl (μM)
80
60
40
20
NH2
NH
FAP (m/z 167)
NH
NH2
m/z 122
m/z 122
[13C3]-TSA (m/z 334)
FAP-d3 (m/z 170)
FAP-d3
m/z 170>125
Retention time (min)
TSA
m/z 331>122
Relative intensity (x105)
Relative intensity (x105)
Relative intensity (x106)
S O
[13C
3]-TSA
m/z 334>122
0.5
Retention time (min)
TSE
m/z 297>122
Relative intensity (x105)
FAP
m/z 167>122
Relative intensity (x105)
[13C3]-TSE (m/z 300)
Relative intensity (x105)
m/z 125
S O
TSE (m/z 297)
TSA (m/z 331)
NH2
m/z 122
m/z 122
m/z 122
D3C
NH2
1.2
[13C3]-TSE
m/z 300>122
0.8
0.6
0.4
0.2
Retention time (min)
1000
80
800
600
200
40
50 100 150 200 250
HOCl (µM)
40
1000
900
800
50
50 100 150 200 250
HOCl (µM)
30
20
10
12 18
Time (h)
24
1.5
0.6
0.5
0.0
50 100 150 200 250
HOCl (µM)
0.4
0.2
0.0
50 100 150 200 250
15
TSST (μM)
40
20
50 100 150 200 250
HOCl (µM)
12
18
24
10
10
Time (h)
20
12
18
24
HOCl (µM)
50
30
TSE (μM)
0.8
TSA (μM)
1.0
Time (h)
2.0
TSE (μM)
TSA (μM)
60
20
TSST (μM)
FAP (μM)
100
Thiamine (μM)
1200
FAP (μM)
Thiamine (μM)
12 18
Time (h)
24
12 18
Time (h)
24
110
Thiamine (μM)
FAP (μM)
Thiamine (μM)
Time (h)
100
90
0.5
0.0
50
TSE (nM)
TSE (nM)
50
Control PMA 4-ABH
PMA
***
TSA (nM)
***
100
***
1.0
Control PMA 4-ABH
PMA
150
TSA (nM)
***
80
10
Time (h)
1.5
FAP (μM)
40
***
***
30
20
10
N.D.
Control PMA 4-ABH
PMA
Time (h)
Time (h)
200
***
TSST (nM)
TSST (nM)
***
150
100
50
Time (h)
Control PMA 4-ABH
PMA
Control PMA 4-ABH
PMA
MPO relative expression ratio
(MPO/β-actin)
***
0.8
0.4
Control LPS
FAP
(pmol/g tissue weight)
Thiamine
(pmol/g tissue weight)
1.2
0.0
Control LPS
40
**
30
20
10
Control LPS
TSE
(pmol/g tissue weight)
50
**
Control LPS
Cl
HOCl H2O
+H2O
-H2O
Thiamine
Thiol
Thioketone
HOCl
hydrolysis
H2 O
HCl
+ Thiamine
TSST
Sulfenyl chloride
FAP
HOCl
HCl
HCl
TSA
TSE
Sulfinyl chloride
Supplementary Data
Quantitative analysis of oxidized vitamin B1 metabolites generated
by hypochlorous acid
Hitoshi Sasatsuki1, Atsuo Nakazaki1, Koji Uchida2,3, and Takahiro Shibata1,4 *
Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601,
Japan
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo
113-8657, Japan
Japan Agency for Medical Research and Development, CREST, Tokyo, Japan
Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya
University, Nagoya 464-8601, Japan
To whom correspondence should be addressed. Takahiro Shibata, Ph.D., Graduate
School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan. Tel:
81-52-789-4125, Fax: 81-52-789-5741 E-mail: shibatat@agr.nagoya-u.ac.jp
Running title: Quantitative analysis of oxidized vitamin B1 metabolites
Table S1
Analyte
Thiamine
FAP
TSE
TSST
TSA
Validation data in cell culture medium
Validation level
Accuracy
Precision
(nM)
(Bias %)
(RSD %)
156.3
-3.8
2.2
1250.0
-1.1
1.7
10000.0
5.1
3.1
2.0
-7.3
3.5
15.6
1.6
4.9
125.0
2.1
4.2
0.4
9.2
11.8
3.1
1.8
9.1
25.0
-0.9
6.2
6.0
-5.3
6.1
15.6
-6.1
4.0
125.0
-0.7
3.1
11.9
6.8
10.4
31.3
8.3
7.7
250.0
5.0
5.7
Table S2 Relative matrix effects experimental results of three different lots of cell
culture medium
Analyte
Thiamine
Matrix effect (%)
100.8
FAP
99.2
TSE
97.1
TSST
99.4
TSA
97.7
Table S3
Analyte
Thiamine
FAP
TSE
Validation data in mouse lung tissue homogenate
Validation level
Accuracy
Precision
(nM)
(Bias %)
(RSD %)
15.6
3.4
3.0
125.0
3.2
3.0
1000.0
2.4
2.8
1.6
8.6
8.7
12.5
1.8
3.1
100.0
0.7
3.3
0.3
-0.6
5.5
0.8
17.4
7.6
6.0
-4.0
5.0
Table S4
Relative matrix effects experimental results of three different lots of
mouse lung tissue homogenate
Analyte
Matrix effect (%)
Thiamine
105.0
FAP
100.4
TSE
83.3
Figure S1
position
δH (ppm)
δC (ppm)
2.50 (s, 3H)
21.4
165.0
163.0
111.7
7.99 (s, 1H)
144.4
4.31 (s, 2H)
35.0
8.20 (s, 1H)
170.9
Figure S1 The 1H- and 13C-NMR spectroscopic data of peak A in D2O.
Figure S2
position
δH (ppm)
δC (ppm)
2.51 (s, 3H)
20.9
164.2
162.2
111.0
7.96 (s, 1H)
142.8
4.20-4.70 (m, 2H)
39.5
8.08 (s, 1H)
165.6
136.5
138.5
10
2.06 (s, 3H)
18.5
11
2.70 (t, J = 7.4Hz, 2H)
33.1
12
3.73 (t, J = 7.4Hz, 2H)
60.3
Figure S2 The 1H- and 13C-NMR spectroscopic data of peak B in D2O.
Figure S3
position
δH (ppm)
δC (ppm)
2.52 (s, 3H)
17.8
159.6
160.8
106.4
8.05 (s, 1H)
140.6
4.59 (d, J = 16.0 Hz, 1H)
36.0
6’
4.82 (d, J = 16.0 Hz, 1H)
36.0
8.34 (s, 1H)
162.6
133.7
149.8
10
2.14 (s, 3H)
14.5
11
2.81-3.06 (m, 2H)
23.2
12
4.81-4.86 (m, 2H)
72.3
Figure S3 The 1H- and 13C-NMR spectroscopic data of peak C in D2O.
Figure S4
TSA
TSE
Figure S4 The HMBC correlations in the structure of TSA and TSE.
Figure S5
TPP
TPP
+ HOCl
FAP
TPP
Intensity (×107)
TPP
Thiamine
Thiamine
+ HOCl
TSE
TSA
TSST
FAP
Thiamine
Thiamine
Retention time (min)
Figure S5 Total LC-ESI-MS/MS ion chromatograms of reaction mixtures of
thiamine/TPP with HOCl
Thiamine or TPP (1 mM) was incubated with HOCl (100 μM) for 24 h at 37 oC.
Figure S6
40
y = 0.0284x - 0.1436
R² = 0.9990
30
20
10
250
500
750 1000
FAP (nM)
Peak area
(analyte/Internal standard)
Peak area
(analyte/Internal standard)
25
y = 0.022x + 0.3112
R² = 0.9974
20
15
10
250
500
750 1000
TSA (nM)
Peak area
(analyte/Internal standard)
60
y = 0.1242x + 1.0399
R² = 0.9958
40
20
100
200
300
400
TSE (nM)
Figure S6 Calibration curves for the oxidized thiamine metabolites
A, Calibration curve for FAP. B, Calibration curve for TSA. C, Calibration curve for
TSE
Figure S7
Relative intensity (x105)
m/z 122
Thiamine (m/z 265)
Thiamine
m/z 265>122
Relative intensity (x105)
m/z 125
Thiamine-d3 (m/z 268)
Thiamine-d3
m/z 268>125
Retention time (min)
Peak area
(analyte/Internal standard)
200
y = 8.451x - 0.1252
R² = 0.9998
150
100
50
10
15
20
Thiamine (μM)
Figure S7 Quantification of thiamine by LC-ESI-MS/MS with SRM mode.
A, Proposed fragmentation pattern of thiamine (upper) and thiamine-d3 (lower). B, LCESI-MS/MS analysis of thiamine. Upper, SRM for thiamine (m/z 265 > 122); lower,
SRM for thiamine-d3 (m/z 268 > 125). C, calibration curve for thiamine.
Figure S8
m/z 124
TSST (m/z 282)
Relative intensity (x105)
TSST
m/z 282>124
Relative intensity (x105)
m/z 127
TSST-d6 (m/z 285)
TSST-d6
m/z 285>127
Retention time (min)
Peak area
(analyte/Internal standard)
y = 0.0137x - 0.0058
R² = 1.0000
50 100 150 200 250
TSST (nM)
Figure S8 Quantification of TSST by LC-ESI-MS/MS with SRM mode.
A, Proposed fragmentation pattern of TSST (upper) and TSST-d3 (lower). B, LC- ESIMS/MS analysis of thiamine. Upper, SRM for TSST (m/z 282 > 124); lower, SRM for
TSST-d6 (m/z 285 > 127). C, calibration curve for TSST.
Figure S9
***
40
***
PMA
MPO
30
6 (h)
80 kDa
60 KDa
50 kDa
HOCl (μM)
Time
20
10
Control PMA
4-ABH
PMA
Figure S9 Activation of neutrophil-like HL60 cells by PMA
A, Immunoblot analysis of MPO in culture media of HL60 cells. The neutrophildifferentiated HL-60 cells were stimulated with PMA (100 nM) for indicated times (0-6
h), and the resulting culture supernatants were analyzed by immunoblot analysis with
anti-MPO antibody. B, Quantification of HOCl in culture media of HL60 cells. After
treatment of the neutrophil-differentiated HL-60 cells with PMA (100 nM) together
with or without 4-ABH (100 μM) for 6 h, the concentration of HOCl in culture media
was analyzed as described in “Experimental Procedures”.
...