Fatty acid beta oxidation enzyme HADHA is a novel potential therapeutic target in malignant lymphoma

Cancer cells, including malignant lymphoma cells, alter their metabolism, termed “metabolic reprograming,” on initiation of malignant transformation as well as upon accumulation of genetic abnormalities. Here, to identify a novel therapeutic target involved in the metabolic changes during malignant...

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Veröffentlicht in:Laboratory investigation 2020-03, Vol.100 (3), p.353-362
Hauptverfasser: Yamamoto, Kouhei, Abe, Shinya, Honda, Ayaka, Hashimoto, Jun, Aizawa, Yuuki, Ishibashi, Sachiko, Takemura, Taro, Hanagata, Nobutaka, Yamamoto, Masahide, Miura, Osamu, Kurata, Morito, Kitagawa, Masanobu
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container_issue 3
container_start_page 353
container_title Laboratory investigation
container_volume 100
creator Yamamoto, Kouhei
Abe, Shinya
Honda, Ayaka
Hashimoto, Jun
Aizawa, Yuuki
Ishibashi, Sachiko
Takemura, Taro
Hanagata, Nobutaka
Yamamoto, Masahide
Miura, Osamu
Kurata, Morito
Kitagawa, Masanobu
description Cancer cells, including malignant lymphoma cells, alter their metabolism, termed “metabolic reprograming,” on initiation of malignant transformation as well as upon accumulation of genetic abnormalities. Here, to identify a novel therapeutic target involved in the metabolic changes during malignant lymphoma, we performed global analyses combined with shotgun proteomics, in silico database analysis, and clinic-pathologic analysis of nonneoplastic lymphoid tissue and malignant lymphoma tissue and verified the molecular functions in vitro. In total, 2002 proteins were detected from both samples and proteins related to fatty acid beta-oxidation (FAO) were detected more frequently in malignant lymphoma tissue. Consequently, the most frequently detected protein, the mitochondrial trifunctional enzyme subunit-alpha (HADHA), was identified as a potential target. Immunohistochemical analyses revealed that HADHA tended to be overexpressed in a high-grade subtype of malignant lymphoma tissue. Clinicopathologic study revealed that HADHA overexpression was correlated with significantly worse overall survival (P= 0.013) and was an independent prognostic predictor in diffuse large B-cell lymphoma (P= 0.027). In vitro, downregulation of HADHA negatively regulated cell growth by causing G0/G1 arrest (P= 0.0008) similar to treatment with etomoxir, an inhibitor of FAO (P= 0.032). Moreover, downregulation of HADHA increased the susceptibility to doxorubicin (P= 0.002) and etoposide (P= 0.004). Moreover, these phenotypes were confirmed in an HADHA knockout system. Thus, we provide a basis for a novel therapeutic strategy through the regulation of HADHA and FAO in patients with refractory malignant lymphoma.
doi_str_mv 10.1038/s41374-019-0318-6
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Clinicopathologic study revealed that HADHA overexpression was correlated with significantly worse overall survival (P= 0.013) and was an independent prognostic predictor in diffuse large B-cell lymphoma (P= 0.027). In vitro, downregulation of HADHA negatively regulated cell growth by causing G0/G1 arrest (P= 0.0008) similar to treatment with etomoxir, an inhibitor of FAO (P= 0.032). Moreover, downregulation of HADHA increased the susceptibility to doxorubicin (P= 0.002) and etoposide (P= 0.004). Moreover, these phenotypes were confirmed in an HADHA knockout system. 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Here, to identify a novel therapeutic target involved in the metabolic changes during malignant lymphoma, we performed global analyses combined with shotgun proteomics, in silico database analysis, and clinic-pathologic analysis of nonneoplastic lymphoid tissue and malignant lymphoma tissue and verified the molecular functions in vitro. In total, 2002 proteins were detected from both samples and proteins related to fatty acid beta-oxidation (FAO) were detected more frequently in malignant lymphoma tissue. Consequently, the most frequently detected protein, the mitochondrial trifunctional enzyme subunit-alpha (HADHA), was identified as a potential target. Immunohistochemical analyses revealed that HADHA tended to be overexpressed in a high-grade subtype of malignant lymphoma tissue. Clinicopathologic study revealed that HADHA overexpression was correlated with significantly worse overall survival (P= 0.013) and was an independent prognostic predictor in diffuse large B-cell lymphoma (P= 0.027). In vitro, downregulation of HADHA negatively regulated cell growth by causing G0/G1 arrest (P= 0.0008) similar to treatment with etomoxir, an inhibitor of FAO (P= 0.032). Moreover, downregulation of HADHA increased the susceptibility to doxorubicin (P= 0.002) and etoposide (P= 0.004). Moreover, these phenotypes were confirmed in an HADHA knockout system. 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ispartof Laboratory investigation, 2020-03, Vol.100 (3), p.353-362
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language eng
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subjects 13/106
13/109
13/31
13/51
631/67/1059/602
631/67/2327
82/58
Abnormalities
Antineoplastic Agents - pharmacology
B-cell lymphoma
Cell death
Cell growth
Cell Line, Tumor
Cell Survival - drug effects
Correlation analysis
Down-Regulation
Doxorubicin
Drug Discovery
Enzymes
Etoposide
Fatty acids
Fatty Acids - metabolism
Female
Genetic abnormalities
Genetic transformation
Humans
Laboratory Medicine
Lymphocytes
Lymphocytes B
Lymphoid tissue
Lymphoid Tissue - chemistry
Lymphoid Tissue - metabolism
Lymphoma
Lymphoma - metabolism
Lymphoma - mortality
Lymphoma - pathology
Male
Medicine
Medicine & Public Health
Metabolic pathways
Metabolism
Middle Aged
Mitochondria
Mitochondrial Trifunctional Protein, alpha Subunit - antagonists & inhibitors
Mitochondrial Trifunctional Protein, alpha Subunit - genetics
Mitochondrial Trifunctional Protein, alpha Subunit - metabolism
Oxidation
Oxidation-Reduction
Pathology
Phenotypes
Proteins
Proteome - analysis
Proteome - metabolism
Proteomics
Shotguns
Target recognition
Therapeutic applications
Tissues
title Fatty acid beta oxidation enzyme HADHA is a novel potential therapeutic target in malignant lymphoma
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