Discovering differential protein expression caused by CagA-induced ERK pathway activation in AGS cells using the SELDI-ProteinChip platform

doi:10.3748/wjg.14.554

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Jan 28, 2008 (publication date) through Mar 2, 2025

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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

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World J Gastroenterol. Jan 28, 2008; 14(4): 554-562
Published online Jan 28, 2008. doi: 10.3748/wjg.14.554

Table 1 Overview of biomarkers’ expression level in the 2 000-20 000 m/z mass range in wild-type cagA, phosphorylation site mutant cagA and blank vector transfected AGS cells

Array type	m/z	Peak intensity (mean ± SD)			Fold change		Comments
Array type	m/z	V	W	M	W vs V	M vs V	Comments
SAX2	2013	30.39 ± 7.19	8.82 ± 5.37	29.92 ± 9.53	-3.45^a	-1.02	CagA phosphorylation dependent
	4286	5.08 ± 0.85	2.25 ± 0.70	4.44 ± 0.58	-2.26^a	-1.14
	8564	9.73 ± 1.88	3.72 ± 0.42	10.86 ± 1.77	-2.62^a	1.12
	9084	2.61 ± 1.35	6.13 ± 1.74	2.75 ± 0.60	2.35^a	1.05
	9952	5.22 ± 2.07	2.51 ± 0.95	5.19 ± 1.30	-2.08^a	-1.01
	11 643	3.39 ± 0.98	1.32 ± 0.86	3.70 ± 1.10	-2.57^a	1.09
CM10	4229	4.29 ± 0.57	9.36 ± 0.32	6.13 ± 0.78	2.18^a	1.43
	5130	3.59 ± 0.72	6.93 ± 0.61	4.58 ± 0.46	1.93^a	1.28
	8162	4.26 ± 0.38	8.88 ± 1.06	4.97 ± 0.24	2.08^a	1.17
	11 087	3.37 ± 0.75	1.94 ± 0.46	3.19 ± 0.39	-1.74^a	-1.06
	13 804	2.97 ± 0.79	8.66 ± 0.48	4.14 ± 1.23	2.92^a	1.39
	14 021	3.06 ± 0.24	5.59 ± 0.41	3.66 ± 1.04	1.83^a	1.20
SAX2	6545	3.08 ± 0.88	6.95 ± 1.34	5.53 ± 0.69	2.26^a	1.80^a	CagA phosphorylation independent
CM10	4714	10.16 ± 1.26	17.95 ± 3.61	17.31 ± 1.41	1.77^a	1.70^a	CagA phosphorylation independent
	4729	11.11 ± 1.75	20.51 ± 4.02	21.92 ± 2.58	1.80^a	1.97^a
	6656	9.67 ± 2.45	22.83 ± 4.27	21.46 ± 1.92	2.36^a	2.22^a

Biomarkers were selected by these criteria: Statistical P-value among sample groups less than 0.05; signal to noise ratio higher than 5.0; peak intensity higher than 1.0. The particular fold change in average peak intensity of wild-type cagA transfectants (W) or phosphorylation site mutant cagA transfectants (M) was calculated compared with the intensity of blank vector transfectants (V).

^aP < 0.05. Statistical P-value was calculated with a non-parametrical Mann-Whitney test (n = 4).

Citation: Ge Z, Zhu YL, Zhong X, Yu JK, Zheng S. Discovering differential protein expression caused by CagA-induced ERK pathway activation in AGS cells using the SELDI-ProteinChip platform. World J Gastroenterol 2008; 14(4): 554-562
URL: https://www.wjgnet.com/1007-9327/full/v14/i4/554.htm
DOI: https://dx.doi.org/10.3748/wjg.14.554