E-GEOD-50767 - Anaplastic thyroid carcinoma cell lines (HTH83 and TL3) infected with LAMC2 shRNA

Status
Released on 10 October 2013, last updated on 22 October 2013
Organism
Homo sapiens
Samples (12)
Array (1)
Protocols (7)
Description
Laminin-5 gamma-2 (LAMC2) is highly expressed in anaplastic thyroid carcinoma and associated with tumor progression, migration and invasion by modulating signaling of EGFR LAMC2 was highly expressed in ATC samples and cell lines compared to normal thyroid tissues. Silencing LAMC2 by shRNA in ATC cells moderately inhibited cell growth in liquid culture and dramatically decreased growth in soft agar and in xenografts growing in immunodeficient mice. Silencing LAMC2 caused cell cycle arrest and significantly suppressed migration, invasion and wound healing of ATC cells. Rescue experiments by overexpressing LAMC2 in LAMC2 knockdown cells, reversed the inhibitory effects as shown by increased cell proliferation and colony formation. Microarray data demonstrated that LAMC2 shRNA significantly altered expression of genes associated with migration, invasion, proliferation and survival. Immunoprecipitation studies showed that LAMC2 was bound to EGFR in ATC cells. Silencing of LAMC2 partially blocked EGF-mediated activation of EGFR and its downstream pathway. Anaplastic thyroid carcinoma (ATC) is an aggressive malignancy having no effective treatment. Laminin subunit gamma-2 (LAMC2) is an epithelial basement membrane protein involved in cell migration and tumour invasion and might represent an ideal target for the development of novel therapeutic approaches for ATC. LAMC2 was highly expressed in ATC samples and cell lines compared to normal thyroid tissues. Silencing LAMC2 by shRNA in ATC cells moderately inhibited cell growth in liquid culture and dramatically decreased growth in soft agar and in xenografts growing in immunodeficient mice. Silencing LAMC2 caused cell cycle arrest and significantly suppressed migration, invasion and wound healing of ATC cells. Rescue experiments by overexpressing LAMC2 in LAMC2 knockdown cells, reversed the inhibitory effects as shown by increased cell proliferation and colony formation. Microarray data demonstrated that LAMC2 shRNA significantly altered expression of genes associated with migration, invasion, proliferation and survival. Immunoprecipitation studies showed that LAMC2 was bound to EGFR in ATC cells. Silencing of LAMC2 partially blocked EGF-mediated activation of EGFR and its downstream pathway. LAMC2 was highly expressed in ATC samples and cell lines compared to normal thyroid tissues. Silencing LAMC2 by shRNA in ATC cells moderately inhibited cell growth in liquid culture and dramatically decreased growth in soft agar and in xenografts growing in immunodeficient mice. Silencing LAMC2 caused cell cycle arrest and significantly suppressed migration, invasion and wound healing of ATC cells. Rescue experiments by overexpressing LAMC2 in LAMC2 knockdown cells, reversed the inhibitory effects as shown by increased cell proliferation and colony formation. Microarray data demonstrated that LAMC2 shRNA significantly altered expression of genes associated with migration, invasion, proliferation and survival. Immunoprecipitation studies showed that LAMC2 was bound to EGFR in ATC cells. Silencing of LAMC2 partially blocked EGF-mediated activation of EGFR and its downstream pathway. Anaplastic thyroid carcinoma cell lines (HTH83 and TL3) were infected with scrambled shRNA and LAMC2 shRNA and stable clones from each cell line were generated and used for RNA extraction and hybridization on Illumina Microarray. We compared scrambled shRNA stable cells with LAMC2 shRNA stable cells.
Experiment type
transcription profiling by array 
Contacts
Lizhen Liu <csiliul@nus.edu.sg>, Abhishek Sampath, Deepika Kanojia, Glenn D Braunstein, H P Koeffler, Henry Yang, Jonathan W Said, Li-Zhen Liu, Ling-Wen Ding, Manoj Garg, Meng Xuan, Ngan B Doan, Ryoko Okamoto, Saket Jain, Sigal Gery, Vikas Madan, Wenwen Chien
MIAME
PlatformsProtocolsFactorsProcessedRaw
Files
Investigation descriptionE-GEOD-50767.idf.txt
Sample and data relationshipE-GEOD-50767.sdrf.txt
Processed data (1)E-GEOD-50767.processed.1.zip
Array designA-GEOD-10558.adf.txt
Links