Expression of sphingosine kinase gene in the interactions between human gastric carcinoma cell and vascular endothelial cell

doi:10.3748/wjg.v8.i4.602

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Aug 15, 2002 (publication date) through Nov 23, 2024

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World Journal of Gastroenterology

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1007-9327

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Gastric Cancer

World J Gastroenterol. Aug 15, 2002; 8(4): 602-607
Published online Aug 15, 2002. doi: 10.3748/wjg.v8.i4.602

Table 1 Dose-effect of DMS on HGCC and HVEC for 48 h (n = 8, ¯x ± s)

DMS dose/(μmol/L)	Inhibitory rate of cell proliferation (%)
DMS dose/(μmol/L)	HGCC	HVEC
0 (control)	0	0
1	12.33^b	5.61^b
2	17.53^b	11.11^b
3.5	31.31^b	17.77^b
5	54.68^b	18.41^b
7.5	64.34^b	19.82^b
10	80.68^b	31.02^b
15	89.04^b	65.76^b
20	92.67^b	76.02^b
25	95.91^b	82.32^b
30	97.21^b	83.42^b

^bP < 0.01 vs control.

Table 2 Time-effect of 10 μmol/L DMS on HGCC and HVEC (n = 8, ¯x ± s)

DMS action periods/h	Inhibitory rate of cell proliferation (%)
DMS action periods/h	HGCC	HVEC
0 (control)	0	0
3	9.11^b	5.18^b
6	13.46^b	7.05^b
12	20.18^b	11.12^b
24	41.98^b	19.52^b
48	80.68^b	31.02^b
72	93.55^b	56.44^b

^bP < 0.01 vs control.

Table 3 Different dose-time-effects of CMs of subconfluent and confluent HGCC on HVEC (n = 8, ¯x ± s)

CM volume fraction t/h cell confluent state	A of CM group/A of control group
	100%CM		80%CM		50%CM		30%CM		10%CM
	subconfluent	confluent	subconfluent	confluent	subconfluent	confluent	subconfluent	confluent	subconfluent	confluent
24	2.38 ± 0.01^a	1.29 ± 0.00^a^b	2.70 ± 0.01^a	1.55 ± 0.02^a^b	2.21 ± 0.01^a	1.49 ± 0.02^a^b	2.10 ± 0.03^a	1.44 ± 0.01^a^b	1.92 ± 0.02^a	1.11 ± 0.01^a^b
48	1.60 ± 0.01^a	1.22 ± 0.01^a^b	1.54 ± 0.01^a	1.33 ± 0.02^a^b	1.38 ± 0.02^a	1.23 ± 0.02^a^b	1.37 ± 0.02^a	1.21 ± 0.01^a^b	1.31 ± 0.01^a	1.15 ± 0.02^a^b
72	0.89 ± 0.00	0.85 ± 0.00	0.99 ± 0.01	1.03 ± 0.01	1.07 ± 0.01^a	1.11 ± 0.01^a	1.27 ± 0.01^a	1.01 ± 0.00^b	1.01 ± 0.00	1.15 ± 0.01^a

^aP < 0.05 vs No-CM action group,

^bP < 0.05 vs subconfluent group.

Table 4 Different dose-time-effect of CMs of different preparing periods of confluent HGCC on HVEC (n = 8, ¯x ± s)

CM volume fraction t/h Preparing periods	A of CM group/A of control group
	100%CM		80%CM		50%CM		30%CM		10%CM
	24 hCM	48 hCM	24 hCM	48 hCM	24 hCM	48 hCM	24 hCM	48 hCM	24 hCM	48 hCM
24	1.29 ± 0.01^a	1.38 ± 0.01^a^b	1.55 ± 0.02^a	1.39 ± 0.01^a^b	1.49 ± 0.01^a	1.38 ± 0.01^a^b	1.44 ± 0.02^a	1.30 ± 0.01^a^b	1.11 ± 0.01^a	1.00 ± 0.01^b
48	1.22 ± 0.01^a	1.11 ± 0.02^a^b	1.33 ± 0.01^a	1.14 ± 0.02^a^b	1.23 ± 0.01^a	1.03 ± 0.01^b	1.21 ± 0.01^a	1.03 ± 0.01^b	1.15 ± 0.01^a	1.02 ± 0.01^b
72	0.85 ± 0.01	0.78 ± 0.00	0.99 ± 0.01	0.92 ± 0.00	1.07 ± 0.02^a	1.14 ± 0.01^a^b	1.27 ± 0.01^a	1.20 ± 0.01^a^b	1.15 ± 0.01^a	1.16 ± 0.01^a

^aP < 0.05 vs No-CM action group,

^bP < 0.05 vs preparing for 24 hCM group.

Table 5 Effects of CMs of subconflunt and confluent HVEC on HGCC for 48 h (n = 8, ¯x ± s)

Volume fraction	Inhibitory rate of cell proliferation (%)
Volume fraction	CM of subconfluent HVEC	CM of confluent HVEC
100%CM	52.97 ± 0.01^a	31.62 ± 0.02^a^b
80%CM	54.26 ± 0.01^a	30.46 ± 0.01^a^b
50%CM	23.46 ± 0.01^a	19.00 ± 0.01^a^b
30%CM	21.70 ± 0.00^a	2.13 ± 0.01^b
10%CM	14.36 ± 0.00^a	1.61 ± 0.00^b

^aP < 0.05 vs No-CM action group;

^bP < 0.05 vs subconfluent group.

Citation: Ren J, Dong L, Xu CB, Pan BR. Expression of sphingosine kinase gene in the interactions between human gastric carcinoma cell and vascular endothelial cell. World J Gastroenterol 2002; 8(4): 602-607
URL: https://www.wjgnet.com/1007-9327/full/v8/i4/602.htm
DOI: https://dx.doi.org/10.3748/wjg.v8.i4.602