1
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Takeda S, Hirao-Suzuki M, Aramaki H, Watanabe K. Δ 9-Tetrahydrocannabinol stimulation of estrogen receptor-positive MCF-7 breast cancer cell migration: Interfering interaction with the estrogenic milieu. Forensic Toxicol 2022:10.1007/s11419-022-00655-5. [PMID: 36583834 DOI: 10.1007/s11419-022-00655-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/12/2022] [Indexed: 12/31/2022]
Abstract
PURPOSE The effects of extended Δ9-tetrahydrocannabinol (Δ9-THC) exposure on estrogen receptor-positive human breast cancer MCF-7 cells have been investigated; however, the effects of Δ9-THC exposure for a shorter duration remain unclear. In this study, we sought to study whether Δ9-THC stimulates the migration of MCF-7 cells under both estrogenic and estrogen-deprived conditions over a short period (approximately 6 h). METHODS MCF-7 cells were treated with Δ9-THC under estrogenic or estrogen-deprived conditions, and cell migration was subsequently analyzed. RESULTS Δ9-THC-stimulated migration of MCF-7 cells 6 h after exposure was only observed in the estrogen-deprived condition. However, Δ9-THC-mediated migration was counteracted under estrogenic conditions without affecting cell proliferation and estrogen receptor expression during this period. CONCLUSIONS Δ9-THC can stimulate MCF-7 cell migration under estrogen-deprived conditions; however, there is an interfering interaction between Δ9-THC and the estrogenic milieu that influences the migration of MCF-7 cells.
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Affiliation(s)
- Shuso Takeda
- Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Sanzou 1, Gakuen-Cho, Fukuyama, Hiroshima, 729-0292, Japan. .,Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-Cho, Minami-Ku, Fukuoka, 815-8511, Japan. .,Organization for Frontier Research in Preventive Pharmaceutical Sciences, Hokuriku University, Ho-3 Kanagawa-Machi, Kanazawa, 920-1181, Japan.
| | - Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hiro-Koshingai, Kure, Hiroshima, 737-0112, Japan
| | - Hironori Aramaki
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-Cho, Minami-Ku, Fukuoka, 815-8511, Japan
| | - Kazuhito Watanabe
- Center for Supporting Pharmaceutical Education, Daiichi University of Pharmacy, 22-1 Tamagawa-Cho, Minami-Ku, Fukuoka, 815-8511, Japan.,Organization for Frontier Research in Preventive Pharmaceutical Sciences, Hokuriku University, Ho-3 Kanagawa-Machi, Kanazawa, 920-1181, Japan
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2
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Hirao-Suzuki M, Takayuki K, Takiguchi M, Peters JM, Takeda S. Cannabidiolic acid activates the expression of the PPARβ/δ target genes in MDA-MB-231 cells. Arch Biochem Biophys 2022; 731:109428. [DOI: 10.1016/j.abb.2022.109428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/13/2022] [Accepted: 10/06/2022] [Indexed: 11/02/2022]
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3
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Hu Y, Wu C, Chen Q, Zhang Y, Chen Z. Hydrogen Peroxide Enhances Fatty Acid 2-Hydroxylase Expression to Impede the Lipopolysaccharides-Triggered Apoptosis of Human Mesenchymal Stem Cells. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.3155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
As a type of stem cells that mainly exist in the connective tissue or interstitium, mesenchymal stem cells (MSCs) exhibit great potential in self-renewal and multi-directional differentiation. They have been clinically utilized for the treatment of various diseases including cancer.
This study aims to provide solid evidence for the further development and application of MSCs in human diseases. MSCs were assigned into 5 groups: control group, LPS group, low-, medium- and high-dose hydrogen peroxide groups. After one-hour treatment with LPS, MSCs were exposed to H2O2
for 12 hours followed by analysis of cell apoptosis, viability via EdU staining, TUNEL assay and flow cytometry, FA2H expression by qPCR and Western blotting. The hydrogen peroxide treatment reduced proportion of apoptotic cells induced by LPS, along with enhanced viability and milder DNA
damage. In addition, hydrogen peroxide impeded the LPS-triggered apoptosis of human MSCs. The results above proved that hydrogen peroxide significantly impeded the LPS-triggered apoptosis of MSCs, and further increased cell viability. This protective effect of hydrogen peroxide was mainly
achieved by upregulation of FA2H expression. In conclusion, hydrogen peroxide can enhance FA2H expression to impede the LPS-triggered apoptosis of human MSCs. This finding helps to improve the further development and application of MSCs in treating human diseases.
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Affiliation(s)
- Yunli Hu
- Department of Cardiovascular Division, Chongqing Jiangjin District Central Hospital, Chongqing, 402260, China
| | - Chunfeng Wu
- Department of Cardiovascular Division, Chongqing Jiangjin District Central Hospital, Chongqing, 402260, China
| | - Qingmei Chen
- Department of Cardiovascular Division, Chongqing Jiangjin District Central Hospital, Chongqing, 402260, China
| | - Yu Zhang
- Department of Cardiovascular Division, Chongqing Jiangjin District Central Hospital, Chongqing, 402260, China
| | - Zhongxia Chen
- Department of Cardiovascular Division, Chongqing Jiangjin District Central Hospital, Chongqing, 402260, China
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4
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Sakai G, Hirao-Suzuki M, Koga T, Kobayashi T, Kamishikiryo J, Tanaka M, Fujii K, Takiguchi M, Sugihara N, Toda A, Takeda S. Perfluorooctanoic acid (PFOA) as a stimulator of estrogen receptor-negative breast cancer MDA-MB-231 cell aggressiveness: Evidence for involvement of fatty acid 2-hydroxylase (FA2H) in the stimulated cell migration. J Toxicol Sci 2022; 47:159-168. [DOI: 10.2131/jts.47.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Genki Sakai
- Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University
| | - Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Takayuki Koga
- Department of Hygienic Chemistry, Daiichi University of Pharmacy
| | | | - Jun Kamishikiryo
- Department of Biochemistry, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University
| | - Michitaka Tanaka
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Kiyonaga Fujii
- Laboratory of Analytical Chemistry, Daiichi University of Pharmacy
| | - Masufumi Takiguchi
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Narumi Sugihara
- Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University
| | - Akihisa Toda
- Department of Hygienic Chemistry, Daiichi University of Pharmacy
| | - Shuso Takeda
- Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University
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5
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Hirao-Suzuki M, Takeda S, Koga T, Takiguchi M, Toda A. Cannabidiolic acid dampens the expression of cyclooxygenase-2 in MDA-MB-231 breast cancer cells: Possible implication of the peroxisome proliferator-activated receptor β/δ abrogation. J Toxicol Sci 2020; 45:227-236. [PMID: 32238697 DOI: 10.2131/jts.45.227] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
A growing body of experimental evidence strongly suggests that cannabidiolic acid (CBDA), a major component of the fiber-type cannabis plant, exerts a variety of biological activities. We have reported that CBDA can abrogate cyclooxygenase-2 (COX-2) expression and its enzymatic activity. It is established that aberrant expression of COX-2 correlates with the degree of malignancy in breast cancer. Although the reduction of COX-2 expression by CBDA offers an attractive medicinal application, the molecular mechanisms underlying these effects have not fully been established. It has been reported that COX-2 expression is positively controlled by peroxisome proliferator-activated receptor β/δ (PPARβ/δ) in some cancerous cells, although there is "no" modulatory element for PPARβ/δ on the COX-2 promoter. No previous studies have examined whether an interaction between PPARβ/δ-mediated signaling and COX-2 expression exists in MDA-MB-231 cells. We confirmed, for the first time, that COX-2 expression is positively modulated by PPARβ/δ-mediated signaling in MDA-MB-231 cells. CBDA inhibits PPARβ/δ-mediated transcriptional activation stimulated by the PPARβ/δ-specific agonist, GW501516. Furthermore, the disappearance of cellular actin stress fibers, a hallmark of PPARβ/δ and COX-2 pathway activation, as evoked by the GW501516, was effectively reversed by CBDA. Activator protein-1 (AP-1)-driven transcriptional activity directly involved in the regulation of COX-2 was abrogated by the PPARβ/δ-specific inverse agonists (GSK0660/ST-247). Thus, it is implicated that there is positive interaction between PPARβ/δ and AP-1 in regulation of COX-2. These data support the concept that CBDA is a functional down-regulator of COX-2 through the abrogation of PPARβ/δ-related signaling, at least in part, in MDA-MB-231 cells.
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Affiliation(s)
- Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU)
| | - Shuso Takeda
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU)
| | - Takayuki Koga
- Department of Hygienic Chemistry, Daiichi University of Pharmacy
| | - Masufumi Takiguchi
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU)
| | - Akihisa Toda
- Department of Hygienic Chemistry, Daiichi University of Pharmacy
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6
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Hirao-Suzuki M, Koga T, Sakai G, Kobayashi T, Ishii Y, Miyazawa H, Takiguchi M, Sugihara N, Toda A, Ohara M, Takeda S. Fatty acid 2-hydroxylase (FA2H) as a stimulatory molecule responsible for breast cancer cell migration. Biochem Biophys Res Commun 2020; 531:215-222. [PMID: 32798015 DOI: 10.1016/j.bbrc.2020.07.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 01/22/2023]
Abstract
The functional role of fatty acid 2-hydroxylase (FA2H) is controversial in the field of cancer biology due to the dual role of FA2H, particularly related to its interaction with triple-negative breast cancer (TNBC). A previous biochemical- and clinical-focused study suggested that FA2H could dampen TNBC aggressiveness. However, another epidemiological study demonstrated that FA2H expression is associated with shorter disease-free survival in TNBC cases. We reported that FA2H is a peroxisome proliferator-activated receptor α (PPARα)-regulated gene in human breast cancer MDA-MB-231 cells, in vitro experimental models for TNBC analysis. PPARα activation by its ligand reportedly results in an aggressive MDA-MB-231 cell phenotype, as well as estrogen receptor α (ERα)-positive MCF-7 cells. The results of this study show that i) MDA-MB-231 cells express very low levels of FA2H compared to the MCF-7 cells, reflecting a low basal-level PPARα-driven transcriptional activity compared to the MCF-7 cells, and ii) the increased FA2H expression stimulates the MDA-MB-231 and MCF-7 breast cancer cell migration without affecting proliferation. Taken together, our findings indicate that FA2H might be a breast cancer cell migration stimulator, independently of the ERα expression status.
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Affiliation(s)
- Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU), 5-1-1 Hiro-koshingai, Kure, Hiroshima, 737-0112, Japan
| | - Takayuki Koga
- Labaratory of Hygienic Chemistry, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka, 815-8511, Japan
| | - Genki Sakai
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU), 5-1-1 Hiro-koshingai, Kure, Hiroshima, 737-0112, Japan; Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Sanzou 1, Gakuen-cho, Fukuyama, Hiroshima, 729-0292, Japan
| | - Takanobu Kobayashi
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1, Shido, Sanuki, Kagawa, 769-2193, Japan
| | - Yuji Ishii
- Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Hiroshi Miyazawa
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1, Shido, Sanuki, Kagawa, 769-2193, Japan
| | - Masufumi Takiguchi
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU), 5-1-1 Hiro-koshingai, Kure, Hiroshima, 737-0112, Japan
| | - Narumi Sugihara
- Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Sanzou 1, Gakuen-cho, Fukuyama, Hiroshima, 729-0292, Japan
| | - Akihisa Toda
- Labaratory of Hygienic Chemistry, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka, 815-8511, Japan
| | - Masahiro Ohara
- Department of Breast Surgery, JA Hiroshima General Hospital, 1-3-3 Jigozen Hatsukaichi Hiroshima, 738-8503, Japan
| | - Shuso Takeda
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU), 5-1-1 Hiro-koshingai, Kure, Hiroshima, 737-0112, Japan; Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Sanzou 1, Gakuen-cho, Fukuyama, Hiroshima, 729-0292, Japan.
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7
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Dai X, Zhang S, Cheng H, Cai D, Chen X, Huang Z. FA2H Exhibits Tumor Suppressive Roles on Breast Cancers via Cancer Stemness Control. Front Oncol 2019; 9:1089. [PMID: 31709178 PMCID: PMC6821679 DOI: 10.3389/fonc.2019.01089] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 10/02/2019] [Indexed: 12/31/2022] Open
Abstract
Background: Triple negative breast cancers are aggressive, enriched with cancer stem cells, and lack effective targeted therapies with little side effects. Methods: We isolated cancer stem cells from two triple negative breast cancer cell lines via cell sorting following transcriptome sequencing, bioinformatics analysis, experimental and clinical validations, as well as functional investigations to explore genes capturing triple negative breast cancer features for improved diagnosis and therapeutics in clinics. Results: We found that FA2H is under-expressed in triple negative breast cancers both in vitro and in clinics, and FA2H suppresses cancer stemness via inhibiting the STAT3/IL6 axis and NFkB signaling. Conclusions: This study reports the tumor suppressive roles of FA2H on breast cancer cells through cancer stemness control. FA2H and other candidates unveiled in this study that capture the features of cancer stem cells may contribute as diagnostic marker and/or effective therapeutic targets for improved triple negative breast cancer management.
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Affiliation(s)
- Xiaofeng Dai
- Wuxi School of Medicine, JiangNan University, Wuxi, China
| | - Shuo Zhang
- School of Biotechnology, Jiangnan University, Wuxi, China
| | - Hongye Cheng
- School of Biotechnology, Jiangnan University, Wuxi, China
| | - Dongyan Cai
- Wuxi School of Medicine, JiangNan University, Wuxi, China
- Wuxi Cancer Institute, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Xiao Chen
- School of Biotechnology, Jiangnan University, Wuxi, China
| | - Zhaohui Huang
- Wuxi School of Medicine, JiangNan University, Wuxi, China
- Wuxi Cancer Institute, Affiliated Hospital of Jiangnan University, Wuxi, China
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8
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Hirao-Suzuki M, Takeda S, Watanabe K, Takiguchi M, Aramaki H. Δ 9-Tetrahydrocannabinol upregulates fatty acid 2-hydroxylase (FA2H) via PPARα induction: A possible evidence for the cancellation of PPARβ/δ-mediated inhibition of PPARα in MDA-MB-231 cells. Arch Biochem Biophys 2018; 662:219-225. [PMID: 30553767 DOI: 10.1016/j.abb.2018.12.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 12/04/2018] [Accepted: 12/08/2018] [Indexed: 01/30/2023]
Abstract
Peroxisome proliferator-activated receptors (PPARs) are a family of ligand-activated nuclear transcription factors, with three characterized subtypes: PPARα, PPARβ/δ, and PPARγ. The biological correlation between the two PPAR subtypes PPARα and γ and carcinogenesis is well-characterized; however, substantially less is known about the biological functions of PPARβ/δ. PPARβ/δ has been reported to repress transcription when PPARβ/δ and PPARα or PPARγ are simultaneously expressed in some cells, and MDA-MB-231 cells express functional levels of PPARβ/δ. We have previously reported that Δ9-tetrahydrocannabinol (Δ9-THC), a major cannabinoid component of the drug-type cannabis plant, can stimulate the expression of fatty acid 2-hydroxylase (FA2H) via upregulation of PPARα expression in human breast cancer MDA-MB-231 cells. Although the possibility of an inhibitory interaction between PPARα and PPARβ/δ has not been demonstrated in MDA-MB-231 cells, we reasoned if this interaction were to exist, Δ9-THC should make PPARα free to achieve FA2H induction. Here, we show that a PPARβ/δ-mediated suppression of PPARα function, but not of PPARγ, exists in MDA-MB-231 cells and Δ9-THC causes FA2H induction via mechanisms underlying the cancellation of PPARβ/δ-mediated inhibition of PPARα, in addition to the upregulation of PPARα.
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Affiliation(s)
- Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU), 5-1-1 Hiro-koshingai, Kure, Hiroshima, 737-0112, Japan
| | - Shuso Takeda
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU), 5-1-1 Hiro-koshingai, Kure, Hiroshima, 737-0112, Japan.
| | - Kazuhito Watanabe
- Center for Supporting Pharmaceutical Education, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka, 815-8511, Japan
| | - Masufumi Takiguchi
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU), 5-1-1 Hiro-koshingai, Kure, Hiroshima, 737-0112, Japan
| | - Hironori Aramaki
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka, 815-8511, Japan
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9
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O'Sullivan SE. An update on PPAR activation by cannabinoids. Br J Pharmacol 2016; 173:1899-910. [PMID: 27077495 PMCID: PMC4882496 DOI: 10.1111/bph.13497] [Citation(s) in RCA: 294] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 03/16/2016] [Accepted: 04/04/2016] [Indexed: 02/06/2023] Open
Abstract
Some cannabinoids activate the different isoforms of PPARs (α, β and γ), as shown through the use of reporter gene assays, binding studies, selective antagonists and knockout studies. Activation of all isoforms, but primarily PPARα and γ, mediates some (but not all) of the analgesic, neuroprotective, neuronal function modulation, anti-inflammatory, metabolic, anti-tumour, gastrointestinal and cardiovascular effects of some cannabinoids, often in conjunction with activation of the more traditional target sites of action such as the cannabinoid CB1 and CB2 receptors and the TRPV1 ion channel. PPARs also mediate some of the effects of inhibitors of endocannabinoid degradation or transport. Cannabinoids may be chaperoned to the PPARs by fatty acid binding proteins. The aims of this review are to update the evidence supporting PPAR activation by cannabinoids and to review the physiological responses to cannabinoids that are mediated, and not mediated, by PPAR activation.
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10
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Naik AW, Kangas JD, Sullivan DP, Murphy RF. Active machine learning-driven experimentation to determine compound effects on protein patterns. eLife 2016; 5:e10047. [PMID: 26840049 PMCID: PMC4798950 DOI: 10.7554/elife.10047] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 01/28/2016] [Indexed: 12/03/2022] Open
Abstract
High throughput screening determines the effects of many conditions on a given biological target. Currently, to estimate the effects of those conditions on other targets requires either strong modeling assumptions (e.g. similarities among targets) or separate screens. Ideally, data-driven experimentation could be used to learn accurate models for many conditions and targets without doing all possible experiments. We have previously described an active machine learning algorithm that can iteratively choose small sets of experiments to learn models of multiple effects. We now show that, with no prior knowledge and with liquid handling robotics and automated microscopy under its control, this learner accurately learned the effects of 48 chemical compounds on the subcellular localization of 48 proteins while performing only 29% of all possible experiments. The results represent the first practical demonstration of the utility of active learning-driven biological experimentation in which the set of possible phenotypes is unknown in advance. DOI:http://dx.doi.org/10.7554/eLife.10047.001 Biomedical scientists have invested significant effort into making it easy to perform lots of experiments quickly and cheaply. These “high throughput” methods are the workhorses of modern “systems biology” efforts. However, we simply cannot perform an experiment for every possible combination of different cell type, genetic mutation and other conditions. In practice this has led researchers to either exhaustively test a few conditions or targets, or to try to pick the experiments that best allow a particular problem to be explored. But which experiments should we pick? The ones we think we can predict the outcome of accurately, the ones for which we are uncertain what the results will be, or a combination of the two? Humans are not particularly well suited for this task because it requires reasoning about many possible outcomes at the same time. However, computers are much better at handling statistics for many experiments, and machine learning algorithms allow computers to “learn” how to make predictions and decisions based on the data they’ve previously processed. Previous computer simulations showed that a machine learning approach termed “active learning” could do a good job of picking a series of experiments to perform in order to efficiently learn a model that predicts the results of experiments that were not done. Now, Naik et al. have performed cell biology experiments in which experiments were chosen by an active learning algorithm and then performed using liquid handling robots and an automated microscope. The key idea behind the approach is that you learn more from an experiment you can’t predict (or that you predicted incorrectly) than from just confirming your confident predictions. The results of the robot-driven experiments showed that the active learning approach outperforms strategies a human might use, even when the potential outcomes of individual experiments are not known beforehand. The next challenge is to apply these methods to reduce the cost of achieving the goals of large projects, such as The Cancer Genome Atlas. DOI:http://dx.doi.org/10.7554/eLife.10047.002
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Affiliation(s)
- Armaghan W Naik
- Computational Biology Department, Carnegie Mellon University, Pittsburgh, United States.,Center for Bioimage Informatics, Carnegie Mellon University, Pittsburgh, United States
| | - Joshua D Kangas
- Computational Biology Department, Carnegie Mellon University, Pittsburgh, United States.,Center for Bioimage Informatics, Carnegie Mellon University, Pittsburgh, United States
| | - Devin P Sullivan
- Computational Biology Department, Carnegie Mellon University, Pittsburgh, United States.,Center for Bioimage Informatics, Carnegie Mellon University, Pittsburgh, United States
| | - Robert F Murphy
- Computational Biology Department, Carnegie Mellon University, Pittsburgh, United States.,Center for Bioimage Informatics, Carnegie Mellon University, Pittsburgh, United States.,Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, United States.,Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, United States.,Machine Learning Department, Carnegie Mellon University, Pittsburgh, United States.,Freiburg Institute for Advanced Studies, Albert Ludwig University of Freiburg, Freiburg, Germany.,Faculty of Biology, Albert Ludwig University of Freiburg, Freiburg, Germany
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11
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Okazaki H, Takeda S, Ikeda E, Fukunishi Y, Ishii H, Taniguchi A, Tokuyasu M, Himeno T, Kakizoe K, Matsumoto K, Shindo M, Aramaki H. Bongkrekic acid as a selective activator of the peroxisome proliferator-activated receptor γ (PPARγ) isoform. J Toxicol Sci 2015; 40:223-33. [PMID: 25786526 DOI: 10.2131/jts.40.223] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Bongkrekic acid (BKA), an antibiotic isolated from Pseudomonas cocovenans, is an inhibitory molecule of adenine nucleotide translocase. Since this translocase is a core component of the mitochondrial permeability transition pore (MPTP) formed by apoptotic stimuli, BKA has been used as a tool to abrogate apoptosis. However, the other biochemical properties of BKA have not yet been resolved. Although the definition of a fatty acid is a carboxylic acid (-COOH) with a long hydrocarbon chain (tail), when focused on the chemical structure of BKA, the molecule was revealed to be a branched unsaturated tricarboxylic acid that resembled the structure of polyunsaturated fatty acids (PUFAs). Peroxisome proliferator-activated receptors (PPARs) consist of a subfamily of three isoforms: α, β, and γ, the ligands of which include PUFAs. Using completely synthesized BKA together with simplified BKA derivatives (purity: > 98%), we herein demonstrated the utility of BKA as a selective activator of the human PPARγ isoform, which may not be associated with the anti-apoptotic nature of BKA. We also discussed the possible usefulness of BKA.
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12
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Takeda S, Okazaki H, Ikeda E, Abe S, Yoshioka Y, Watanabe K, Aramaki H. Down-regulation of cyclooxygenase-2 (COX-2) by cannabidiolic acid in human breast cancer cells. J Toxicol Sci 2015; 39:711-6. [PMID: 25242400 DOI: 10.2131/jts.39.711] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Metastases are known to be responsible for approximately 90% of breast cancer-related deaths. Cyclooxygenase-2 (COX-2) is involved not only in inflammatory processes, but also in the metastasis of cancer cells; it is expressed in 40% of human invasive breast cancers. To comprehensively analyze the effects of cannabidiolic acid (CBDA), a selective COX-2 inhibitor found in the fiber-type cannabis plant (Takeda et al., 2008), on COX-2 expression and the genes involved in metastasis, we performed a DNA microarray analysis of human breast cancer MDA-MB-231 cells, which are invasive breast cancer cells that express high levels of COX-2, treated with CBDA for 48 hr at 25 µM. The results obtained revealed that COX-2 and Id-1, a positive regulator of breast cancer metastasis, were down-regulated (0.19-fold and 0.52-fold, respectively), while SHARP1 (or BHLHE41), a suppressor of breast cancer metastasis, was up-regulated (1.72-fold) and CHIP (or STUB1) was unaffected (1.03-fold). These changes were confirmed by real-time RT-PCR analyses. Taken together, the results obtained here demonstrated that i) CBDA had dual inhibitory effects on COX-2 through down-regulation and enzyme inhibition, and ii) CBDA may possess the ability to suppress genes that are positively involved in the metastasis of cancer cells in vitro.
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Affiliation(s)
- Shuso Takeda
- Department of Molecular Biology, Daiichi University of Pharmacy
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Takeda S, Ikeda E, Su S, Harada M, Okazaki H, Yoshioka Y, Nishimura H, Ishii H, Kakizoe K, Taniguchi A, Tokuyasu M, Himeno T, Watanabe K, Omiecinski CJ, Aramaki H. Δ(9)-THC modulation of fatty acid 2-hydroxylase (FA2H) gene expression: possible involvement of induced levels of PPARα in MDA-MB-231 breast cancer cells. Toxicology 2014; 326:18-24. [PMID: 25291031 DOI: 10.1016/j.tox.2014.09.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/09/2014] [Accepted: 09/29/2014] [Indexed: 12/21/2022]
Abstract
We recently reported that Δ(9)-tetrahydrocannabinol (Δ(9)-THC), a major cannabinoid component in Cannabis Sativa (marijuana), significantly stimulated the expression of fatty acid 2-hydroxylase (FA2H) in human breast cancer MDA-MB-231 cells. Peroxisome proliferator-activated receptor α (PPARα) was previously implicated in this induction. However, the mechanisms mediating this induction have not been elucidated in detail. We performed a DNA microarray analysis of Δ(9)-THC-treated samples and showed the selective up-regulation of the PPARα isoform coupled with the induction of FA2H over the other isoforms (β and γ). Δ(9)-THC itself had no binding/activation potential to/on PPARα, and palmitic acid (PA), a PPARα ligand, exhibited no stimulatory effects on FA2H in MDA-MB-231 cells; thus, we hypothesized that the levels of PPARα induced were involved in the Δ(9)-THC-mediated increase in FA2H. In support of this hypothesis, we herein demonstrated that; (i) Δ(9)-THC activated the basal transcriptional activity of PPARα in a concentration-dependent manner, (ii) the concomitant up-regulation of PPARα/FA2H was caused by Δ(9)-THC, (iii) PA could activate PPARα after the PPARα expression plasmid was introduced, and (iv) the Δ(9)-THC-induced up-regulation of FA2H was further stimulated by the co-treatment with L-663,536 (a known PPARα inducer). Taken together, these results support the concept that the induced levels of PPARα may be involved in the Δ(9)-THC up-regulation of FA2H in MDA-MB-231 cells.
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Affiliation(s)
- Shuso Takeda
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan; Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University (HIU), 5-1-1 Hiro-koshingai, Kure, Hiroshima 737-0112, Japan
| | - Eriko Ikeda
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Shengzhong Su
- Center for Molecular Toxicology and Carcinogenesis, 101 Life Sciences Building, Pennsylvania State University, University Park, PA 16802, United States
| | - Mari Harada
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Hiroyuki Okazaki
- Drug Innovation Research Center, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Yasushi Yoshioka
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Hajime Nishimura
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Hiroyuki Ishii
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Kazuhiro Kakizoe
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Aya Taniguchi
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Miki Tokuyasu
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Taichi Himeno
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
| | - Kazuhito Watanabe
- Department of Hygienic Chemistry, Faculty of Pharmaceutical Sciences, Hokuriku University, Ho-3 Kanagawa-machi, Kanazawa 920-1181, Japan
| | - Curtis J Omiecinski
- Center for Molecular Toxicology and Carcinogenesis, 101 Life Sciences Building, Pennsylvania State University, University Park, PA 16802, United States
| | - Hironori Aramaki
- Department of Molecular Biology, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan; Drug Innovation Research Center, Daiichi University of Pharmacy, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan.
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Lustgarten MS, Price LL, Chalé A, Fielding RA. Metabolites related to gut bacterial metabolism, peroxisome proliferator-activated receptor-alpha activation, and insulin sensitivity are associated with physical function in functionally-limited older adults. Aging Cell 2014; 13:918-25. [PMID: 25041144 PMCID: PMC4331755 DOI: 10.1111/acel.12251] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2014] [Indexed: 01/14/2023] Open
Abstract
Identification of mechanisms underlying physical function will be important for addressing the growing challenge that health care will face with physical disablement in the expanding aging population. Therefore, the goals of the current study were to use metabolic profiling to provide insight into biologic mechanisms that may underlie physical function by examining the association between baseline and the 6-month change in serum mass spectrometry-obtained amino acids, fatty acids, and acylcarnitines with baseline and the 6-month change in muscle strength (leg press one repetition maximum divided by total lean mass, LP/Lean), lower extremity function [short physical performance battery (SPPB)], and mobility (400 m gait speed, 400-m), in response to 6 months of a combined resistance exercise and nutritional supplementation (whey protein or placebo) intervention in functionally-limited older adults (SPPB ≤ 10; 70–85 years, N = 73). Metabolites related to gut bacterial metabolism (cinnamoylglycine, phenol sulfate, p-cresol sulfate, 3-indoxyl sulfate, serotonin, N-methylproline, hydrocinnamate, dimethylglycine, trans-urocanate, valerate) that are altered in response to peroxisome proliferator-activated receptor-alpha (PPAR-α) activation (α-hydroxyisocaproate, α-hydroxyisovalerate, 2-hydroxy-3-methylvalerate, indolelactate, serotonin, 2-hydroxypalmitate, glutarylcarnitine, isobutyrylcarnitine, cinnamoylglycine) and that are related to insulin sensitivity (monounsaturated fatty acids: 5-dodecenoate, myristoleate, palmitoleate; γ-glutamylamino acids: γ-glutamylglutamine, γ-glutamylalanine, γ-glutamylmethionine, γ-glutamyltyrosine; branched-chain amino acids: leucine, isoleucine, valine) were associated with function at baseline, with the 6-month change in function or were identified in backward elimination regression predictive models. Collectively, these data suggest that gut microbial metabolism, PPAR-α activation, and insulin sensitivity may be involved in mechanisms that underlie physical function in functionally-limited older adults.
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Affiliation(s)
- Michael S. Lustgarten
- Nutrition, Exercise Physiology, and Sarcopenia Laboratory Jean Mayer USDA Human Nutrition Research Center Tufts University 711 Washington StreetBoston MA 02111 USA
| | - Lori L. Price
- The Institute for Clinical Research and Health Policy Studies Tufts Medical Center Tufts Clinical and Translational Science Institute Tufts University 711 Washington Street Boston MA 02111USA
| | - Angela Chalé
- Nutrition, Exercise Physiology, and Sarcopenia Laboratory Jean Mayer USDA Human Nutrition Research Center Tufts University 711 Washington StreetBoston MA 02111 USA
| | - Roger A. Fielding
- Nutrition, Exercise Physiology, and Sarcopenia Laboratory Jean Mayer USDA Human Nutrition Research Center Tufts University 711 Washington StreetBoston MA 02111 USA
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Takeda S, Yoshida K, Nishimura H, Harada M, Okajima S, Miyoshi H, Okamoto Y, Amamoto T, Watanabe K, Omiecinski CJ, Aramaki H. Δ(9)-Tetrahydrocannabinol disrupts estrogen-signaling through up-regulation of estrogen receptor β (ERβ). Chem Res Toxicol 2013; 26:1073-9. [PMID: 23718638 DOI: 10.1021/tx4000446] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Δ(9)-Tetrahydrocannabinol (Δ(9)-THC) has been reported as possessing antiestrogenic activity, although the mechanisms underlying these effects are poorly delineated. In this study, we used the estrogen receptor α (ERα)-positive human breast cancer cell line, MCF-7, as an experimental model and showed that Δ(9)-THC exposures markedly suppresses 17β-estradiol (E2)- induced MCF-7 cell proliferation. We demonstrate that these effects result from Δ(9)-THC's ability to inhibit E2-liganded ERα activation. Mechanistically, the data obtained from biochemical analyses revealed that (i) Δ(9)-THC up-regulates ERβ, a repressor of ERα, inhibiting the expression of E2/ERα-regulated genes that promote cell growth and that (ii) Δ(9)-THC induction of ERβ modulates E2/ERα signaling in the absence of direct interaction with the E2 ligand binding site. Therefore, the data presented support the concept that Δ(9)-THC's antiestrogenic activities are mediated by the ERβ disruption of E2/ERα signaling.
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Affiliation(s)
- Shuso Takeda
- Department of Molecular Biology, Daiichi University of Pharmacy , 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan
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Takeda S, Nishimura H, Koyachi K, Matsumoto K, Yoshida K, Okamoto Y, Amamoto T, Shindo M, Aramaki H. (-)-Xanthatin induces the prolonged expression of c-Fos through an N-acetyl-L-cysteine (NAC)-sensitive mechanism in human breast cancer MDA-MB-231 cells. J Toxicol Sci 2013; 38:547-57. [PMID: 23824011 DOI: 10.2131/jts.38.547] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
We reported that (-)-xanthatin, a xanthanolide sesquiterpene lactone present in the Cocklebur plant, exhibited potent anti-proliferative effects on human breast cancer cells, in which GADD45γ, a novel tumor suppressor gene, was induced. Mechanistically, topoisomerase IIα (Topo IIα) inhibition by (-)-xanthatin was shown to be the upstream trigger that stimulated the expression of GADD45γ mRNA and concomitantly produced reactive oxygen species (ROS) to maintain this expression. Since the anti-cancer drug etoposide, a selective Topo IIα inhibitor, has also been shown to induce intracellular ROS, (-)-xanthatin may exert its anti-proliferative effects on cancer cells in a similar manner to those of etoposide. In the present study, to generalize its applicability to cancer therapy, we further investigated the biological activities of (-)-xanthatin by comparing its activities to those of the established anti-cancer drug etoposide. After the exposure of breast cancer cells to (-)-xanthatin or etoposide, a prolonged and marked up-regulation in the expression of c-fos, a proapoptotic molecule, was detected together with GADD45γ; and the expression of these molecules was stabilized by ROS and abrogated by the pretreatment with N-acetyl-L-cysteine (NAC), a potent ROS scavenger. (-)-Xanthatin in particular exhibited stronger anti-proliferative potential than that of etoposide, which underlies the marked induction of c-fos/GADD45γ and ROS production.
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Affiliation(s)
- Shuso Takeda
- Department of Molecular Biology, Daiichi University of Pharmacy, Japan
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