Critical contribution of MCL-1 in EMT-associated chemo-resistance in A549 non-small cell lung cancer

Non-small cell lung cancer (NSCLC) is one of the leading causes of death in all lung cancer patients due to its metastatic spread. Even though cisplatin treatment after surgical resection of the primary tumor has been established as a standard chemotherapy for residual disease including metastatic s...

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Veröffentlicht in:International journal of oncology 2015-04, Vol.46 (4), p.1844-1848
Hauptverfasser: TOGE, MASAYOSHI, YOKOYAMA, SATORU, KATO, SHINICHIRO, SAKURAI, HIROAKI, SENDA, KAZUTAKA, DOKI, YOSHINORI, HAYAKAWA, YOSHIHIRO, YOSHIMURA, NAOKI, SAIKI, IKUO
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container_issue 4
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container_title International journal of oncology
container_volume 46
creator TOGE, MASAYOSHI
YOKOYAMA, SATORU
KATO, SHINICHIRO
SAKURAI, HIROAKI
SENDA, KAZUTAKA
DOKI, YOSHINORI
HAYAKAWA, YOSHIHIRO
YOSHIMURA, NAOKI
SAIKI, IKUO
description Non-small cell lung cancer (NSCLC) is one of the leading causes of death in all lung cancer patients due to its metastatic spread. Even though cisplatin treatment after surgical resection of the primary tumor has been established as a standard chemotherapy for residual disease including metastatic spread, NSCLC often acquires a resistance against chemotherapy, and metastatic disease is often observed. Amongst many potential mechanisms, epithelial-to-mesenchymal transition (EMT) has been considered as an important process in acquiring both metastatic spread and chemo-resistance of NSCLC. In this study, we identified MCL-1 as a critical molecule for chemo-resistance in A549 cells associated with TGF-β-induced EMT. Importantly, downregulation of MCL-1 by siRNA or inhibition of MCL-1 with pan-BCL2 inhibitor to inhibit MCL-1 was able to overcome the EMT-associated chemo-resistance in A549 cells. Collectively, MCL-1 can be a new therapeutic target for overcoming EMT-associated chemo-resistance in NSCLC patients in the context of post-operative chemotherapies.
doi_str_mv 10.3892/ijo.2015.2861
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subjects Apoptosis
Cancer
Cancer therapies
Carcinoma, Non-Small-Cell Lung - genetics
Carcinoma, Non-Small-Cell Lung - metabolism
Carcinoma, Non-Small-Cell Lung - pathology
Care and treatment
Cell Line, Tumor
chemo-resistance
Chemotherapy
Cisplatin - pharmacology
Drug resistance
Drug Resistance, Neoplasm
Drugs
Epithelial-Mesenchymal Transition
epithelial-to-mesenchymal transition
Gene expression
Genetic aspects
Genetic research
Humans
Lung cancer
Lung cancer, Non-small cell
Lung Neoplasms - genetics
Lung Neoplasms - metabolism
Lung Neoplasms - pathology
MCL-1
Metastasis
Minor Histocompatibility Antigens
Myeloid Cell Leukemia Sequence 1 Protein - genetics
Myeloid Cell Leukemia Sequence 1 Protein - metabolism
non-small cell lung cancer
Oncology, Experimental
Proto-Oncogene Proteins c-bcl-2 - genetics
Proto-Oncogene Proteins c-bcl-2 - metabolism
TGF-β
Transforming Growth Factor beta - pharmacology
title Critical contribution of MCL-1 in EMT-associated chemo-resistance in A549 non-small cell lung cancer
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