Role of PKC and MAP kinase in EGF-and TPA-induced connexin43 phosphorylation and inhibition of gap junction intercellular communication in rat liver epithelial …

E Rivedal, H Opsahl - Carcinogenesis, 2001 - academic.oup.com
Gap junction intercellular communication (GJIC) is involved in the regulation of many
cellular processes. The gap junction channels are made up of connexins and the flow of …

Inhibition of gap junctional intercellular communication by tumor promoters in connexin43 and connexin32-expressing liver cells: cell specificity and role of protein …

P Ren, PP Mehta, RJ Ruch - Carcinogenesis, 1998 - academic.oup.com
In this study, we investigated whether the tumor promoters, 12-O-tetradecanoylphorbol-13-
acetate (TPA), phenobarbital (PB), and 1, 1-bis (p-chlorophenyl)-2, 2, 2-trichloroethane …

Inhibition of connexin43 gap junctional intercellular communication by TPA requires ERK activation

RJ Ruch, JE Trosko… - Journal of cellular …, 2001 - Wiley Online Library
Abstract The phorbol ester, 12‐O‐tetradecanoylphorbol‐13‐acetate (TPA), is a potent
inhibitor of gap junctional intercellular communication (GJIC). This inhibition requires …

[PDF][PDF] Characterization of gap junctional communication-deficient mutants of a rat liver epithelial cell line

SY Oh, E Dupont, BV Madhukar, JP Briand… - European journal of …, 1993 - researchgate.net
Studies from several laboratories have shown that gap junctional communication can be
modulated by oncogenes, growth factors, as well as a variety of chemicals including tumor …

Connexin43 synthesis, phosphorylation, and degradation in regulation of transient inhibition of gap junction intercellular communication by the phorbol ester TPA in …

E Rivedal, E Leithe - Experimental cell research, 2005 - Elsevier
The tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA) induces transient
inhibition of gap junction intercellular communication (GJIC) in several cell types. The initial …

Mitogen‐activated protein kinase and phosphorylation of connexin43 are not sufficient for the disruption of gap junctional communication by platelet‐derived growth …

MZ Hossain, AB Jagdale, P Ao… - Journal of cellular …, 1999 - Wiley Online Library
Disruption of gap junctional communication (GJC) by various compounds, including growth
factors and tumor promoters, is believed to be modulated by the phosphorylation of a gap …

Recovery of gap junctional intercellular communication after phorbol ester treatment requires proteasomal degradation of protein kinase C

E Leithe, V Cruciani, T Sanner, SO Mikalsen… - …, 2003 - academic.oup.com
Reversible down-regulation of gap junctional intercellular communication (GJIC) is
proposed to be an important cellular mechanism in tumor promotion. Gap junction function is …

Interplay between PKC and the MAP kinase pathway in Connexin43 phosphorylation and inhibition of gap junction intercellular communication

S Sirnes, A Kjenseth, E Leithe, E Rivedal - Biochemical and biophysical …, 2009 - Elsevier
Gap junction channels are made of a family proteins called connexins. The best-studied type
of connexin, Connexin43 (Cx43), is phosphorylated at several sites in its C-terminus. The …

Molecular mechanisms of TPA‐mediated inhibition of gap‐junctional intercellular communication: evidence for action on the assembly or function but not the …

M Asamoto, M Oyamada, AE Aoumari… - Molecular …, 1991 - Wiley Online Library
We found that a rat liver epithelial cell line (IAR 20) expresses connexin 43, the major
cardiac gap‐junction protein, but not connexin 26 or connexin 32, major liver gap‐junction …

Enhancement of liver cell gap junction protein expression by glucocorticoids

P Ren, AW de Feijter, DL Paul, RJ Ruch - Carcinogenesis, 1994 - academic.oup.com
Gap junctional intercellular communication (GJIC) and the expression of gap junction
proteins (connexins) may be involved in growth regulation and neoplastic transformation …