scholarly journals Downregulation of the KIP family members p27KIP1and p57KIP2by SKP2 and the role of methylation in p57KIP2inactivation in nonsmall cell lung cancer

2006 ◽  
Vol 119 (11) ◽  
pp. 2546-2556 ◽  
Author(s):  
Ioannis S. Pateras ◽  
Kalliopi Apostolopoulou ◽  
Marilena Koutsami ◽  
Kostas Evangelou ◽  
Petros Tsantoulis ◽  
...  
2011 ◽  
Vol 26 (5) ◽  
pp. 585-592 ◽  
Author(s):  
Jian-Guo Sun ◽  
Rong-Xia Liao ◽  
Shao-Xiang Zhang ◽  
Yu-Zhong Duan ◽  
Wen-Lei Zhuo ◽  
...  

2016 ◽  
Vol Volume 6 ◽  
pp. 23-30 ◽  
Author(s):  
Haruhiko Nakamura ◽  
Hiroki Sakai ◽  
Tomoyuki Miyazawa ◽  
Toshiaki Somehara ◽  
Noboru Nakayama ◽  
...  

2013 ◽  
Vol 8 (3) ◽  
pp. 142 ◽  
Author(s):  
JoséM Chatkin ◽  
JoséA Pinto ◽  
MariaT.R. Tsukazan ◽  
MárioB Wagner ◽  
AdrianaF Saldanha ◽  
...  

2019 ◽  
Author(s):  
Ayushi S. Patel ◽  
Seungyeul Yoo ◽  
Ranran Kong ◽  
Takashi Sato ◽  
Abhilasha Sinha ◽  
...  

AbstractComprehensive genomic analyses of small cell lung cancer (SCLC), the most aggressive form of lung cancer, have revealed near universal loss of tumor suppressors (RB1 and TP53) and frequent genomic amplification of all three MYC family members. The amplification of each Myc family member is mutually exclusive; hence it had been long suggested that they are functionally equivalent. However, their expression has more recently been associated with specific neuroendocrine markers and distinct histopathology. In this study, we explored a novel role of c-Myc and L-Myc as lineage determining factors contributing to SCLC molecular subtypes and histology. Integrated analyses of a gene regulatory network generated from mRNA expression of primary SCLC tumor and chromatin state profiling of SCLC cell lines showed that Myc family members impart distinct transcriptional programs associated with lineage state; wherein the L-Myc signature was enriched for neuronal pathways while the c-Myc signature was enriched for Notch signaling and epithelial-to-mesenchymal transition. We investigated the functional redundancy and distinction of c-Myc and L-Myc, and noted the insufficiency of L-Myc to induce lineage switch in contrast to the potential of c-Myc to induce trans-differentiation. c-Myc rewires the Myc-accessible landscape and activates neuron al repressor, Rest to mediate transition from ASCL1-SCLC to NeuroD1-SCLC characterized by distinct LCNEC-like histopathology. Collectively, our findings reveal a previously undescribed role of historically defined general oncogenes, c-Myc and L-Myc, for regulating lineage plasticity across molecular subtypes as well as histological subclasses.


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