scholarly journals Overexpression of Dominant Negative Retinoic Acid Receptor α Causes Alveolar Abnormality in Transgenic Neonatal Lungs

Endocrinology ◽  
2003 ◽  
Vol 144 (7) ◽  
pp. 3004-3011 ◽  
Author(s):  
Li Yang ◽  
Angela Naltner ◽  
Cong Yan
2006 ◽  
Vol 395 (3) ◽  
pp. 653-662 ◽  
Author(s):  
Harish Srinivas ◽  
Dianren Xia ◽  
Nicole L. Moore ◽  
Ivan P. Uray ◽  
Heetae Kim ◽  
...  

The transactivation of nuclear receptors is regulated by both ligand binding and phosphorylation. We previously showed that RARα (retinoic acid receptor α) phosphorylation by c-Jun N-terminal kinase contributes to retinoid resistance in a subset of NSCLC cells (non-small cell lung cancer cells), but the aetiology of this resistance in the remainder has not been fully elucidated [Srinivas, Juroske, Kalyankrishna, Cody, Price, Xu, Narayanan, Weigel and Kurie (2005) Mol. Cell. Biol. 25, 1054–1069]. In the present study, we report that Akt, which is constitutively activated in NSCLC cells, phosphorylates RARα and inhibits its transactivation. Biochemical and functional analyses showed that Akt interacts with RARα and phosphorylates the Ser96 residue of its DNA-binding domain. Mutation of Ser96 to alanine abrogated the suppressive effect of Akt. Overexpression of a dominant-negative form of Akt in an NSCLC cell line decreased RAR phosphorylation, increased RAR transactivation and enhanced the growth-inhibitory effects of an RAR ligand. The findings presented here show that Akt inhibits RAR transactivation and contributes to retinoid resistance in a subset of NSCLC cells.


2005 ◽  
Vol 44 (4) ◽  
pp. 252-261 ◽  
Author(s):  
Y. Alan Wang ◽  
Kate Shen ◽  
Yasumasa Ishida ◽  
Yaolin Wang ◽  
Akira Kakizuka ◽  
...  

2000 ◽  
Vol 270 (3) ◽  
pp. 846-851 ◽  
Author(s):  
Allan Sirsjö ◽  
Andreas C Gidlöf ◽  
Anneli Olsson ◽  
Hans Törmä ◽  
Mikko Ares ◽  
...  

1994 ◽  
Vol 203 (5) ◽  
pp. 254-265 ◽  
Author(s):  
Darrin Paul Smith ◽  
Clive Scott Mason ◽  
Elizabeth Jones ◽  
Robert Old

2006 ◽  
Vol 66 (12) ◽  
pp. 6336-6344 ◽  
Author(s):  
Carine Robert ◽  
Laurent Delva ◽  
Nicole Balitrand ◽  
Sarolta Nahajevszky ◽  
Tamàs Masszi ◽  
...  

1997 ◽  
Vol 40 (16) ◽  
pp. 2445-2451 ◽  
Author(s):  
Min Teng ◽  
Tien T. Duong ◽  
Alan T. Johnson ◽  
Elliott S. Klein ◽  
Liming Wang ◽  
...  

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