Transcriptomics

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Gene expression analysis between the pancreatic tissues of Pdx1-cre;Kras LSL-G12D and Pdx-cre;KrasLSL-G12D;IKK2/beta F/F mice


ABSTRACT: Constitutive Kras and NF-kB activation is identified as signature alterations in human pancreatic ductal adenocarcinoma (PDAC). Here, we report that pancreas-targeted IKK2/beta inactivation inhibited NF-kB activation and completely suppressed PDAC development. Our findings demonstrated that NF-kB is required for development of pancreatic ductal adenocarcinoma that was initiated by Kras activation. Pancreatic tissue from 4 groups of mice were used in this project: (1) the pancreas normal appearance of Pdx1-cre;KrasLSL-G12D;IKK2/beta mice, (2) the normal pancreas of Pdx1-cre;KrasLSL-G12D mice, (3) the pancreatic lesion of pancreatic intraepithelial neoplasia (PanIN) of Pdx1-cre;KrasLSL-G12D mice, and (4) the pancreatic lesion of PDAC of Pdx1-cre;KrasLSL-G12D mice. Each group included three mice. RNA samples from mouse pancreas were hybridized on GeneChip Mouse Gene 1.0 ST arrays (Affymetrix). Group (1) and group (2) were compared, and group (2), group (3) and group (4) were compared.

ORGANISM(S): Mus musculus  

SUBMITTER: Jianhua Ling   Paul J Chiao 

PROVIDER: E-GEOD-33322 | ArrayExpress | 2012-01-24

SECONDARY ACCESSION(S): GSE33322PRJNA156643

REPOSITORIES: GEO, ArrayExpress

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Publications

KrasG12D-induced IKK2/β/NF-κB activation by IL-1α and p62 feedforward loops is required for development of pancreatic ductal adenocarcinoma.

Ling Jianhua J   Kang Ya'an Y   Zhao Ruiying R   Xia Qianghua Q   Lee Dung-Fang DF   Chang Zhe Z   Li Jin J   Peng Bailu B   Fleming Jason B JB   Wang Huamin H   Liu Jinsong J   Lemischka Ihor R IR   Hung Mien-Chie MC   Chiao Paul J PJ  

Cancer cell 20120101 1


Constitutive Kras and NF-κB activation is identified as signature alterations in pancreatic ductal adenocarcinoma (PDAC). However, how NF-κB is activated in PDAC is not yet understood. Here, we report that pancreas-targeted IKK2/β inactivation inhibited NF-κB activation and PDAC development in Kras(G12D) and Kras(G12D);Ink4a/Arf(F/F) mice, demonstrating a mechanistic link between IKK2/β and Kras(G12D) in PDAC inception. Our findings reveal that Kras(G12D)-activated AP-1 induces IL-1α, which, in  ...[more]

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