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Overexpression of Urokinase‐type Plasminogen Activator in Human Gastric Cancer Cell Line (AGS) Induces Tumorigenicity in Severe Combined Immunodeficient Mice
The significance of urokinase‐type plasminogen activator (uPA) expression in gastric cancer development was tested by using a human uPA cDNA transfection approach and an in vivo severe combined immunodeficient (SCID) mouse model. The AGS gastric cancer cell line, which has urokinase‐type plasminogen...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2002
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5926960/ https://www.ncbi.nlm.nih.gov/pubmed/11856478 http://dx.doi.org/10.1111/j.1349-7006.2002.tb01253.x |
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author | Choi, Yang‐Kyu Yoon, Byung‐Il Kook, Yoon‐Hoh Won, Young‐Suk Kim, Jin‐Hyun Lee, Chul‐Ho Hyun, Byung‐Hwa Oh, Goo‐Taeg Sipley, John Kim, Dae‐Yong |
author_facet | Choi, Yang‐Kyu Yoon, Byung‐Il Kook, Yoon‐Hoh Won, Young‐Suk Kim, Jin‐Hyun Lee, Chul‐Ho Hyun, Byung‐Hwa Oh, Goo‐Taeg Sipley, John Kim, Dae‐Yong |
author_sort | Choi, Yang‐Kyu |
collection | PubMed |
description | The significance of urokinase‐type plasminogen activator (uPA) expression in gastric cancer development was tested by using a human uPA cDNA transfection approach and an in vivo severe combined immunodeficient (SCID) mouse model. The AGS gastric cancer cell line, which has urokinase‐type plasminogen‐activator receptor (uPAR) but lacks uPA, was transfected with a plasmid containing human uPA cDNA and injected into the backs of SCID mice. Compared with the parent AGS cells, uPA protein secretion in AGS‐2‐, AGS‐4‐, and AGS‐8‐transfected cells increased by 26.1‐, 34.6‐, and 4.8‐fold, respectively (Pr<0.05). mRNA expression levels of uPA in the AGS‐4 clone were much stronger than those in AGS‐2 and AGS‐8 clones. After the cancer cells (2×l0(6)) were injected s.c. into the SCID mice, a palpable mass was observed at the injection site at around 140 days post‐injection, followed by accelerated growth of the xenograft up to 180 days post‐injection only in the high uPA‐producing clone (AGS‐4). These results suggest that continuous and high production of uPA by tumor cells is one of the important factors reflecting the malignancy of gastric cancer cells. |
format | Online Article Text |
id | pubmed-5926960 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2002 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-59269602018-05-11 Overexpression of Urokinase‐type Plasminogen Activator in Human Gastric Cancer Cell Line (AGS) Induces Tumorigenicity in Severe Combined Immunodeficient Mice Choi, Yang‐Kyu Yoon, Byung‐Il Kook, Yoon‐Hoh Won, Young‐Suk Kim, Jin‐Hyun Lee, Chul‐Ho Hyun, Byung‐Hwa Oh, Goo‐Taeg Sipley, John Kim, Dae‐Yong Jpn J Cancer Res Article The significance of urokinase‐type plasminogen activator (uPA) expression in gastric cancer development was tested by using a human uPA cDNA transfection approach and an in vivo severe combined immunodeficient (SCID) mouse model. The AGS gastric cancer cell line, which has urokinase‐type plasminogen‐activator receptor (uPAR) but lacks uPA, was transfected with a plasmid containing human uPA cDNA and injected into the backs of SCID mice. Compared with the parent AGS cells, uPA protein secretion in AGS‐2‐, AGS‐4‐, and AGS‐8‐transfected cells increased by 26.1‐, 34.6‐, and 4.8‐fold, respectively (Pr<0.05). mRNA expression levels of uPA in the AGS‐4 clone were much stronger than those in AGS‐2 and AGS‐8 clones. After the cancer cells (2×l0(6)) were injected s.c. into the SCID mice, a palpable mass was observed at the injection site at around 140 days post‐injection, followed by accelerated growth of the xenograft up to 180 days post‐injection only in the high uPA‐producing clone (AGS‐4). These results suggest that continuous and high production of uPA by tumor cells is one of the important factors reflecting the malignancy of gastric cancer cells. Blackwell Publishing Ltd 2002-02 /pmc/articles/PMC5926960/ /pubmed/11856478 http://dx.doi.org/10.1111/j.1349-7006.2002.tb01253.x Text en |
spellingShingle | Article Choi, Yang‐Kyu Yoon, Byung‐Il Kook, Yoon‐Hoh Won, Young‐Suk Kim, Jin‐Hyun Lee, Chul‐Ho Hyun, Byung‐Hwa Oh, Goo‐Taeg Sipley, John Kim, Dae‐Yong Overexpression of Urokinase‐type Plasminogen Activator in Human Gastric Cancer Cell Line (AGS) Induces Tumorigenicity in Severe Combined Immunodeficient Mice |
title | Overexpression of Urokinase‐type Plasminogen Activator in Human Gastric Cancer Cell Line (AGS) Induces Tumorigenicity in Severe Combined Immunodeficient Mice |
title_full | Overexpression of Urokinase‐type Plasminogen Activator in Human Gastric Cancer Cell Line (AGS) Induces Tumorigenicity in Severe Combined Immunodeficient Mice |
title_fullStr | Overexpression of Urokinase‐type Plasminogen Activator in Human Gastric Cancer Cell Line (AGS) Induces Tumorigenicity in Severe Combined Immunodeficient Mice |
title_full_unstemmed | Overexpression of Urokinase‐type Plasminogen Activator in Human Gastric Cancer Cell Line (AGS) Induces Tumorigenicity in Severe Combined Immunodeficient Mice |
title_short | Overexpression of Urokinase‐type Plasminogen Activator in Human Gastric Cancer Cell Line (AGS) Induces Tumorigenicity in Severe Combined Immunodeficient Mice |
title_sort | overexpression of urokinase‐type plasminogen activator in human gastric cancer cell line (ags) induces tumorigenicity in severe combined immunodeficient mice |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5926960/ https://www.ncbi.nlm.nih.gov/pubmed/11856478 http://dx.doi.org/10.1111/j.1349-7006.2002.tb01253.x |
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