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Rat Gap Junction Connexin-30 Inhibits Proliferation of Glioma Cell Lines
Princen, Frederic; Robe, Pierre; Gros, D. et al.
2001In Carcinogenesis, 22 (3), p. 507-13
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Abstract :
[en] Connexins, the structural components of gap junctions, control cell growth and differentiation and are believed to belong to a family of tumour suppressor genes. Studies on connexin localization in brain showed that several of these proteins were expressed in distinct compartments of the brain in a cell-type specific manner, indicating that different gap junctions play specific roles in the physiology of the mammalian brain. In this report, we first cloned rat connexin-30 cDNA from brain and showed that it was expressed in long-term primary culture of rat astrocytes. In order to examine the potential role of connexin-30 in tumour cell proliferation, we transfected the connexin-30 cDNA into two rat glioma cell lines (9L and C6) which have lost its expression. Transfected clones adequately expressed membrane-bound connexin-30 protein. Connexin-30-expressing clones showed slower growth, lower DNA synthesis and reduced proliferation in soft agar as compared with the parental and control cells. We concluded that connexin-30 may also probably be considered as a tumour suppressor in rat gliomas.
Disciplines :
Laboratory medicine & medical technology
Author, co-author :
Princen, Frederic
Robe, Pierre ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Génétique générale et humaine
Gros, D.
Jarry-Guichard, T.
Gielen, Jacques
Merville, Marie-Paule ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
Bours, Vincent ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Génétique générale et humaine
Language :
English
Title :
Rat Gap Junction Connexin-30 Inhibits Proliferation of Glioma Cell Lines
Publication date :
March 2001
Journal title :
Carcinogenesis
ISSN :
0143-3334
eISSN :
1460-2180
Publisher :
Oxford University Press, United Kingdom
Volume :
22
Issue :
3
Pages :
507-13
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 August 2009

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