Up-regulation of TIMP-2 expression promotes SHI-1 leukemic cells proliferation and infiltration in immunodeficiency mice / 中华医学杂志(英文版)
Chinese Medical Journal
;
(24): 4243-4249, 2014.
Article
in English
| WPRIM
| ID: wpr-268387
ABSTRACT
<p><b>BACKGROUND</b>MMPs and TIMPs play important roles in tumor angiogenesis and invasion. Studies have shown that TIMP-2 has two roles in tumor invasion. However, its role in leukemic infiltration has not been well investigated. This study explored the roles of TIMP-2 in extramedullary infiltration of acute monocytic leukemic SHI-1 cells both in vitro and in vitro.</p><p><b>METHODS</b>A retroviral vector carrying the human TIMP-2 cDNA was constructed and transfected into the monocytic leukemic cell line SHI-1. The expression of TIMP-2 in the positive clones was determined. The proliferation of SHI-1 cells was examined by MTT assay. Trans-Matrigel invasion assays were used to investigate the infiltration ability in vitro. SHI-1 cells were intravenously injected into pre-treated nu/nu mice to investigate the infiltration ability feature in vitro.</p><p><b>RESULTS</b>The expression of TIMP-2 on the cell membrane was significantly elevated in SHI-1/TIMP-2 cells. Over-expression of TIMP-2 promoted the cells proliferation and the invasions in vitro. The SHI-1/TIMP-2 cells demonstrated higher infiltration ability when intravenously injected into nu/nu mice.</p><p><b>CONCLUSION</b>Over-expression of TIMP-2, especially on the cell membrane, may play important roles in promoting the proliferation and infiltration of SHI-1 leukemic cells.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Physiology
/
Cell Line
/
Leukemic Infiltration
/
Tissue Inhibitor of Metalloproteinase-2
/
Cell Proliferation
/
Mesenchymal Stem Cells
/
Genetics
/
Metabolism
/
Mice, Inbred BALB C
Limits:
Animals
/
Humans
/
Male
Language:
English
Journal:
Chinese Medical Journal
Year:
2014
Type:
Article
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