Abstract
SRPX2 (Sushi repeat containing protein, X-Iinked 2) was first identified as a downstream molecule of the E2A-HLF fusion gene in t(17;19)-positive leukemia cells and the biological function of this gene remains unknown. We found that SRPX2 is overex-pressed in gastric cancer and the expression and clinical features showed that high mRNA expression levels were observed in patients with unfavorable outcomes using real-time RT-PCR. The cellular distribution of SRPX2 protein showed the secretion of SEPX2 into extracellular regions and its localization in the cytoplasm. The introduction of the SRPX2 gene into HEK293 cells did not modulate the cellular proliferative activity but did enhance the cellular migration activity, as shown using migration and scratch assays. The conditioned-medium obtained from SRPX2-overexpressing cells increased the cellular migration activity of a gastric cancer cell line, SM -16. In addition, SRPX2 protein remarkably enhanced the cellular adhesion of SM -16 and HSC-39 and increased the phosphorylation levels of focal adhesion kinase (FAK), as shown using western blotting, suggesting that SRPX2 enhances cellular migration and adhesion through FAK signaling. In conclusion, the overexpression of SRPX2 enhances cellular migration and adhesion in gastric cancer cells. Here, we report that the biological functions of SRPX2 include cellular migration and adhesion to cancer cells.
| Original language | English |
|---|---|
| Pages (from-to) | 1072-1080 |
| Number of pages | 9 |
| Journal | International Journal of Cancer |
| Volume | 124 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Mar 1 2009 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Oncology
- Cancer Research
Cite this
SRPX2 is overexpressed in gastric cancer and promotes cellular migration and adhesion. / Tamaka, Kaoru; Aran, Tokuzo; Maegawa, Mari; Matsumoto, Kazuko; Kaneda, Hiroyasu; Kudo, Kanae; Fujita, Yoshihike; Yokote, Hideyuki; Yanagihara, Kazuyoshi; Yamada, Yasuhide; Okamoto, Isamu; Nakagawa, Kazuhiko; Nishio, Kazuto.
In: International Journal of Cancer, Vol. 124, No. 5, 01.03.2009, p. 1072-1080.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - SRPX2 is overexpressed in gastric cancer and promotes cellular migration and adhesion
AU - Tamaka, Kaoru
AU - Aran, Tokuzo
AU - Maegawa, Mari
AU - Matsumoto, Kazuko
AU - Kaneda, Hiroyasu
AU - Kudo, Kanae
AU - Fujita, Yoshihike
AU - Yokote, Hideyuki
AU - Yanagihara, Kazuyoshi
AU - Yamada, Yasuhide
AU - Okamoto, Isamu
AU - Nakagawa, Kazuhiko
AU - Nishio, Kazuto
PY - 2009/3/1
Y1 - 2009/3/1
N2 - SRPX2 (Sushi repeat containing protein, X-Iinked 2) was first identified as a downstream molecule of the E2A-HLF fusion gene in t(17;19)-positive leukemia cells and the biological function of this gene remains unknown. We found that SRPX2 is overex-pressed in gastric cancer and the expression and clinical features showed that high mRNA expression levels were observed in patients with unfavorable outcomes using real-time RT-PCR. The cellular distribution of SRPX2 protein showed the secretion of SEPX2 into extracellular regions and its localization in the cytoplasm. The introduction of the SRPX2 gene into HEK293 cells did not modulate the cellular proliferative activity but did enhance the cellular migration activity, as shown using migration and scratch assays. The conditioned-medium obtained from SRPX2-overexpressing cells increased the cellular migration activity of a gastric cancer cell line, SM -16. In addition, SRPX2 protein remarkably enhanced the cellular adhesion of SM -16 and HSC-39 and increased the phosphorylation levels of focal adhesion kinase (FAK), as shown using western blotting, suggesting that SRPX2 enhances cellular migration and adhesion through FAK signaling. In conclusion, the overexpression of SRPX2 enhances cellular migration and adhesion in gastric cancer cells. Here, we report that the biological functions of SRPX2 include cellular migration and adhesion to cancer cells.
AB - SRPX2 (Sushi repeat containing protein, X-Iinked 2) was first identified as a downstream molecule of the E2A-HLF fusion gene in t(17;19)-positive leukemia cells and the biological function of this gene remains unknown. We found that SRPX2 is overex-pressed in gastric cancer and the expression and clinical features showed that high mRNA expression levels were observed in patients with unfavorable outcomes using real-time RT-PCR. The cellular distribution of SRPX2 protein showed the secretion of SEPX2 into extracellular regions and its localization in the cytoplasm. The introduction of the SRPX2 gene into HEK293 cells did not modulate the cellular proliferative activity but did enhance the cellular migration activity, as shown using migration and scratch assays. The conditioned-medium obtained from SRPX2-overexpressing cells increased the cellular migration activity of a gastric cancer cell line, SM -16. In addition, SRPX2 protein remarkably enhanced the cellular adhesion of SM -16 and HSC-39 and increased the phosphorylation levels of focal adhesion kinase (FAK), as shown using western blotting, suggesting that SRPX2 enhances cellular migration and adhesion through FAK signaling. In conclusion, the overexpression of SRPX2 enhances cellular migration and adhesion in gastric cancer cells. Here, we report that the biological functions of SRPX2 include cellular migration and adhesion to cancer cells.
UR - http://www.scopus.com/inward/record.url?scp=58749111083&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=58749111083&partnerID=8YFLogxK
U2 - 10.1002/ijc.24065
DO - 10.1002/ijc.24065
M3 - Article
C2 - 19065654
AN - SCOPUS:58749111083
VL - 124
SP - 1072
EP - 1080
JO - International Journal of Cancer
JF - International Journal of Cancer
SN - 0020-7136
IS - 5
ER -