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Liu YC, Su WS, Hung TH, Yang FY. Low-Intensity Pulsed Ultrasound Protects SH-SY5Y Cells Against 6-Hydroxydopamine-Induced Neurotoxicity by Upregulating Neurotrophic Factors. Ultrasound Med Biol 2024; 50:610-616. [PMID: 38290910 DOI: 10.1016/j.ultrasmedbio.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 12/30/2023] [Accepted: 01/04/2024] [Indexed: 02/01/2024]
Abstract
OBJECTIVE Neonatal hypoxic-ischemic brain damage (HIBD) can have long-term implications on patients' physical and mental health, yet the available treatment options are limited. Recent research has shown that low-intensity pulsed ultrasound (LIPUS) holds promise for treating neurodegenerative diseases and traumatic brain injuries. Our objective was to explore the therapeutic potential of LIPUS for HIBD. METHODS Due to the lack of a suitable animal model for neonatal HIBD, we will initially simulate the therapeutic effects of LIPUS on neuronal cells under oxidative stress and neuroinflammation using cell experiments. Previous studies have investigated the biologic responses following intracranial injection of 6-hydroxydopamine (6-OHDA). In this experiment, we will focus on the biologic effects produced by LIPUS treatment on neuronal cells (specifically, SH-SY5Y cells) without the presence of other neuroglial cell assistance after stimulation with 6-OHDA. RESULTS We found that (i) pulsed ultrasound exposure, specifically three-intermittent sonication at intensities ranging from 0.1 to 0.5 W/cm², did not lead to a significant decrease in viability among SH-SY5Y cells; (ii) LIPUS treatment exhibited a positive effect on cell viability, accompanied by an increase in glial cell-derived neurotrophic factor (GDNF) levels and a decrease in caspase three levels; (iii) the administration of 6-OHDA had a significant impact on cell viability, resulting in a decrease in both brain cell-derived neurotrophic factor (BDNF) and GDNF levels, while concurrently elevating caspase three and matrix metalloproteinase-9 (MMP-9) levels; and (iv) LIPUS treatment demonstrated its potential to alleviate the changes induced by 6-OHDA, particularly in the levels of BDNF, GDNF, and tyrosine hydroxylase (TH). CONCLUSION LIPUS treatment may possess partial therapeutic capabilities for SH-SY5Y cells damaged by 6-OHDA neurotoxicity. Our findings enhance our understanding of the effects of LIPUS treatment on cell viability and its modulation of key factors involved in the pathophysiology of HIBD and show the promising potential of LIPUS as an alternative therapeutic approach for neonates with HIBD.
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Affiliation(s)
- Yu-Cheng Liu
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Wei-Shen Su
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Feng-Yi Yang
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan.
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Li YC, Hsiao SH, Murakami M, Huang YH, Chang YT, Hung TH, Wu YS, Ambudkar SV, Wu CP. Epidermal Growth Factor Receptor Inhibitor Mobocertinib Resensitizes Multidrug-Resistant Cancer Cells by Attenuating the Human ATP-Binding Cassette Subfamily B Member 1 and Subfamily G Member 2. ACS Pharmacol Transl Sci 2024; 7:161-175. [PMID: 38230272 PMCID: PMC10789147 DOI: 10.1021/acsptsci.3c00217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 01/18/2024]
Abstract
ATP-binding cassette (ABC) transporters, notably ABCB1 (P-glycoprotein) and ABCG2, play a crucial role in the development of multidrug resistance (MDR) during the administration of chemotherapy for cancer patients. With a lack of approved treatments for addressing multidrug-resistant cancers, MDR remains a substantial challenge to the effective management of cancer. Rather than focusing on developing novel synthetic inhibitors, a promising approach to combat MDR involves repurposing approved therapeutic agents to enhance the sensitivity to cytotoxic antiproliferative drugs of multidrug-resistant cancer cells with high expression of ABCB1 or ABCG2. In this investigation, we observed a substantial reversal of MDR conferred by ABCB1 and ABCG2 in multidrug-resistant cancer cells through the use of mobocertinib, an approved third-generation inhibitor of the epidermal growth factor receptor (EGFR) tyrosine kinase. Mobocertinib demonstrated the ability to hinder drug transport function without causing changes in protein expression. The interactions between mobocertinib and ABCB1, as well as ABCG2, were validated through ATPase assays. Furthermore, in silico docking simulations were utilized to substantiate the binding of mobocertinib within the drug-binding pockets of both ABCB1 and ABCG2. We conclude that further testing of mobocertinib in combination therapy is warranted for patients with tumors expressing elevated levels of the ABC drug transporters ABCB1 and ABCG2.
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Affiliation(s)
- Yen-Ching Li
- Graduate
Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Sung-Han Hsiao
- Graduate
Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Megumi Murakami
- Laboratory
of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland 20892, United States
| | - Yang-Hui Huang
- Department
of Obstetrics and Gynecology, Taipei Chang
Gung Memorial Hospital, Taipei 10507, Taiwan
| | - Yu-Tzu Chang
- Graduate
Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Tai-Ho Hung
- Department
of Obstetrics and Gynecology, Taipei Chang
Gung Memorial Hospital, Taipei 10507, Taiwan
- Department
of Medicine, College of Medicine, Chang
Gung University, Taoyuan 33302, Taiwan
- Department
of Obstetrics and Gynecology, Keelung Chang
Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Yu-Shan Wu
- Department
of Chemistry, Tunghai University, Taichung 40704, Taiwan
| | - Suresh. V. Ambudkar
- Laboratory
of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland 20892, United States
| | - Chung-Pu Wu
- Graduate
Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department
of Obstetrics and Gynecology, Taipei Chang
Gung Memorial Hospital, Taipei 10507, Taiwan
- Department
of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Molecular
Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
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Wu CP, Murakami M, Li YC, Huang YH, Chang YT, Hung TH, Wu YS, Ambudkar SV. Imperatorin Restores Chemosensitivity of Multidrug-Resistant Cancer Cells by Antagonizing ABCG2-Mediated Drug Transport. Pharmaceuticals (Basel) 2023; 16:1595. [PMID: 38004460 PMCID: PMC10674403 DOI: 10.3390/ph16111595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/03/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
The high expression of the ATP-binding cassette (ABC) drug transporter ABCG2 in cancer cells contributes to the emergence of multidrug resistance (MDR) in individuals afflicted with either solid tumors or blood cancers. MDR poses a major impediment in the realm of clinical cancer chemotherapy. Recently, substantial endeavors have been dedicated to identifying bioactive compounds isolated from nature capable of counteracting ABCG2-mediated MDR in cancer cells. Imperatorin, a natural coumarin derivative renowned for its diverse pharmacological properties, has not previously been explored for its impact on cancer drug resistance. This study investigates the chemosensitizing potential of imperatorin in ABCG2-overexpressing cancer cells. Experimental results reveal that at sub-toxic concentrations, imperatorin significantly antagonizes the activity of ABCG2 and reverses ABCG2-mediated MDR in a concentration-dependent manner. Furthermore, biochemical data and in silico analysis of imperatorin docking to the inward-open conformation of human ABCG2 indicate that imperatorin directly interacts with multiple residues situated within the transmembrane substrate-binding pocket of ABCG2. Taken together, these results furnish substantiation that imperatorin holds promise for further evaluation as a potent inhibitor of ABCG2, warranting exploration in combination drug therapy to enhance the effectiveness of therapeutic agents for patients afflicted with tumors that exhibit high levels of ABCG2.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; (Y.-C.L.); (Y.-H.H.)
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan;
| | - Megumi Murakami
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Yen-Ching Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; (Y.-C.L.); (Y.-H.H.)
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; (Y.-C.L.); (Y.-H.H.)
| | - Yu-Tzu Chang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; (Y.-C.L.); (Y.-H.H.)
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan;
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung 40704, Taiwan;
| | - Suresh V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA;
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Wu CP, Li YC, Murakami M, Hsiao SH, Lee YC, Huang YH, Chang YT, Hung TH, Wu YS, Ambudkar SV. Furmonertinib, a Third-Generation EGFR Tyrosine Kinase Inhibitor, Overcomes Multidrug Resistance through Inhibiting ABCB1 and ABCG2 in Cancer Cells. Int J Mol Sci 2023; 24:13972. [PMID: 37762275 PMCID: PMC10531071 DOI: 10.3390/ijms241813972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/09/2023] [Accepted: 09/10/2023] [Indexed: 09/29/2023] Open
Abstract
ATP-binding cassette transporters, including ABCB1 (P-glycoprotein) and ABCG2 (BCRP/MXR/ABCP), are pivotal in multidrug resistance (MDR) development in cancer patients undergoing conventional chemotherapy. The absence of approved therapeutic agents for multidrug-resistant cancers presents a significant challenge in effectively treating cancer. Researchers propose repurposing existing drugs to sensitize multidrug-resistant cancer cells, which overexpress ABCB1 or ABCG2, to conventional anticancer drugs. The goal of this study is to assess whether furmonertinib, a third-generation epidermal growth factor receptor tyrosine kinase inhibitor overcomes drug resistance mediated by ABCB1 and ABCG2 transporters. Furmonertinib stands out due to its ability to inhibit drug transport without affecting protein expression. The discovery of this characteristic was validated through ATPase assays, which revealed interactions between furmonertinib and ABCB1/ABCG2. Additionally, in silico docking of furmonertinib offered insights into potential interaction sites within the drug-binding pockets of ABCB1 and ABCG2, providing a better understanding of the underlying mechanisms responsible for the reversal of MDR by this repurposed drug. Given the encouraging results, we propose that furmonertinib should be explored as a potential candidate for combination therapy in patients with tumors that have high levels of ABCB1 and/or ABCG2. This combination therapy holds the potential to enhance the effectiveness of conventional anticancer drugs and presents a promising strategy for overcoming MDR in cancer treatment.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Molecular Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan
| | - Yen-Ching Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Megumi Murakami
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yun-Chieh Lee
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yang-Hui Huang
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan
| | - Yu-Tzu Chang
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung 40704, Taiwan
| | - Suresh V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
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5
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Song WS, Hung TH, Liu SH, Zheng YT, Lin HM, Yang FY. Neuroprotection by Abdominal Ultrasound in Lipopolysaccharide-Induced Systemic Inflammation. Int J Mol Sci 2023; 24:ijms24119329. [PMID: 37298275 DOI: 10.3390/ijms24119329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/10/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Systemic inflammation is associated with intestinal inflammation and neuroinflammation by imbalancing the gut-brain axis. Low-intensity pulsed ultrasound (LIPUS) has neuroprotective and anti-inflammatory effects. This study explored LIPUS's neuroprotective effects against lipopolysaccharide (LPS)-induced neuroinflammation through transabdominal stimulation. Male C57BL/6J mice were intraperitoneally injected with LPS (0.75 mg/kg) daily for seven days, and abdominal LIPUS was applied to the abdominal area for 15 min/day during the last six days. One day after the last LIPUS treatment, biological samples were collected for microscopic and immunohistochemical analysis. Histological examination showed that LPS administration leads to tissue damage in the colon and brain. Transabdominal LIPUS stimulation attenuated colonic damage, reducing histological score, colonic muscle thickness, and villi shortening. Furthermore, abdominal LIPUS reduced hippocampal microglial activation (labeled by ionized calcium-binding adaptor molecule-1 [Iba-1]) and neuronal cell loss (labeled by microtubule-associated protein 2 [MAP2]). Moreover, abdominal LIPUS attenuated the number of apoptotic cells in the hippocampus and cortex. Altogether, our results indicate that abdominal LIPUS stimulation attenuates LPS-induced colonic inflammation and neuroinflammation. These findings provide new insights into the treatment strategy for neuroinflammation-related brain disorders and may facilitate method development through the gut-brain axis pathway.
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Affiliation(s)
- Wen-Shin Song
- Division of Neurosurgery, Cheng Hsin General Hospital, Taipei 112, Taiwan
- Department of Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
| | - Shing-Hwa Liu
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 106, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - Yin-Ting Zheng
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Hsin-Mei Lin
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Feng-Yi Yang
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
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6
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Wu CP, Hung CY, Hsieh YJ, Murakami M, Huang YH, Su TY, Hung TH, Yu JS, Wu YS, Ambudkar SV. ABCB1 and ABCG2 Overexpression Mediates Resistance to the Phosphatidylinositol 3-Kinase Inhibitor HS-173 in Cancer Cell Lines. Cells 2023; 12:cells12071056. [PMID: 37048130 PMCID: PMC10093605 DOI: 10.3390/cells12071056] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023] Open
Abstract
Constitutive activation of the phosphoinositide-3-kinase (PI3K)/Akt signaling pathway is crucial for tumor growth and progression. As such, this pathway has been an enticing target for drug discovery. Although HS-173 is a potent PI3K inhibitor that halts cancer cell proliferation via G2/M cell cycle arrest, the resistance mechanisms to HS-173 have not been investigated. In this study, we investigated the susceptibility of HS-173 to efflux mediated by the multidrug efflux transporters ABCB1 and ABCG2, which are two of the most well-known ATP-binding cassette (ABC) transporters associated with the development of cancer multidrug resistance (MDR). We found that the overexpression of ABCB1 or ABCG2 significantly reduced the efficacy of HS-173 in human cancer cells. Our data show that the intracellular accumulation of HS-173 was substantially reduced by ABCB1 and ABCG2, affecting G2/M arrest and apoptosis induced by HS-173. More importantly, the efficacy of HS-173 in multidrug-resistant cancer cells could be recovered by inhibiting the drug-efflux function of ABCB1 and ABCG2. Taken together, our study has demonstrated that HS-173 is a substrate for both ABCB1 and ABCG2, resulting in decreased intracellular concentration of this drug, which may have implications for its clinical use.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Molecular Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan
| | - Cheng-Yu Hung
- Molecular Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Ya-Ju Hsieh
- Molecular Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Megumi Murakami
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Yang-Hui Huang
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan
| | - Tsung-Yao Su
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Jau-Song Yu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Molecular Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Liver Research Center, Linkou Chang Gung Memorial Hospital, Taoyuan 33302, Taiwan
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung 40704, Taiwan
| | - Suresh V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
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Hung TH, Chen PH, Tung TH, Hsu J, Hsu TY, Wan GH. Risks of preterm birth and low birth weight and maternal exposure to NO 2/PM 2.5 acquired by dichotomous evaluation: a systematic review and meta-analysis. Environ Sci Pollut Res Int 2023; 30:9331-9349. [PMID: 36474040 DOI: 10.1007/s11356-022-24520-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
No consistent results from past studies have been found on the relationship between the effects of air pollutant exposure, preterm birth (PTB) and low birth weight (LBW) in fetuses. This study aimed to analyze the impact of high concentrations of air pollutants on the health outcomes of fetuses, especially regarding PTB and LBW. This study used keywords related to air pollutants, pregnancy, and birth outcomes, to search the literature within the databases of the Cochrane Library, PubMed, and Embase, which were published as of July 26, 2022. A total of 24 studies were included in this meta-analysis. This meta-analysis revealed that nitrogen dioxide (NO2) exposure throughout pregnancy was associated with an increased risk of PTB. Maternal exposure to PM2.5 (particulate matter sized less than 2.5 μm) during gestation was associated with the risk of LBW. The findings of this meta-analysis provide an important foundation for evaluating the relationship between exposure of air pollutants and fetal birth outcomes in countries with severe air pollution in the future.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Pei-Hung Chen
- Department of Respiratory Therapy, College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Taoyuan, 333, Taiwan
| | - Tao-Hsin Tung
- Evidence-based Medicine Center, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
| | - Jie Hsu
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Te-Yao Hsu
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Gwo-Hwa Wan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.
- Department of Respiratory Therapy, College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road, Kwei-Shan, Taoyuan, 333, Taiwan.
- Department of Respiratory Care, Chang Gung University of Science and Technology, Chiayi, Taiwan.
- Center for Environmental Sustainability and Human Health, Ming Chi University of Technology, Taishan, New Taipei, Taiwan.
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8
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Jen WH, Hung TH, Chen CY, Tsai YF. Validity and Reliability of the Chinese Version of the Edinburgh Postnatal Depression Scale for Fathers of Newborns. Am J Mens Health 2022; 16:15579883221138191. [PMID: 36411977 PMCID: PMC9703513 DOI: 10.1177/15579883221138191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Studies often use the Edinburgh Postnatal Depression Scale (EPDS) or the Beck Depression Inventory-II (BDI-II) as a screening tool for depression in new mothers or fathers following the birth of an infant, but no studies have evaluated EPDS as a predictor of postnatal depression for new fathers in a Chinese population. This study aimed to test the validity and reliability of a Chinese version of the EPDS for fathers of newborns in Taiwan. The study included 368 parents with newborns ≤2 months of age and without any health problems. Construct and criterion-related validities were assessed and Cronbach's alpha was used for measuring internal consistency reliability. The receiver operating characteristic (ROC) curve analyzed the optimal cutoff score for the EPDS. Scores for the Chinese EPDS were significantly higher for fathers who were >34 years of age, employed in a professional occupation, and participated in feeding their infant (p < .05). Mean scores among the fathers for the EPDS and BDI-II were significantly correlated (r = .64, p < .001). The Cronbach's alpha was .83 for the EPDS; ROC curve analysis revealed the optimal cutoff of the EPDS was ≥8 points and the area under the ROC curve was 0.91. The EPDS had good validity and reliability and should therefore be considered suitable for the evaluation of postnatal depression in fathers of newborn infants in Taiwan.
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Affiliation(s)
- Wei-Hsuan Jen
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ching-Yen Chen
- College of Medicine, Chang Gung University, Taoyuan, Taiwan,Department of Psychiatry, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
| | - Yun-Fang Tsai
- Department of Psychiatry, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan,School of Nursing, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan,Department of Nursing, Chang Gung University of Science and Technology, Tao-Yuan, Taiwan,Yun-Fang Tsai, RN, PhD, FAAN, School of Nursing, College of Medicine, Chang Gung University, 259, Wen-Hwa 1st Road Tao-Yuan, 333, Taiwan.
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9
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Li YQ, Murakami M, Huang YH, Hung TH, Wang SP, Wu YS, Ambudkar SV, Wu CP. Hydroxygenkwanin Improves the Efficacy of Cytotoxic Drugs in ABCG2-Overexpressing Multidrug-Resistant Cancer Cells. Int J Mol Sci 2022; 23:ijms232112763. [PMID: 36361555 PMCID: PMC9658017 DOI: 10.3390/ijms232112763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/18/2022] [Accepted: 10/20/2022] [Indexed: 11/07/2022] Open
Abstract
Hydroxygenkwanin, a flavonoid isolated from the leaves of the Daphne genkwa plant, is known to have pharmacological properties; however, its modulatory effect on multidrug resistance, which is (MDR) mediated by ATP-binding cassette (ABC) drug transporters, has not been investigated. In this study, we examine the interaction between hydroxygenkwanin, ABCB1, and ABCG2, which are two of the most well-characterized ABC transporters known to contribute to clinical MDR in cancer patients. Hydroxygenkwanin is not an efflux substrate of either ABCB1 or ABCG2. We discovered that, in a concentration-dependent manner, hydroxygenkwanin significantly reverses ABCG2-mediated resistance to multiple cytotoxic anticancer drugs in ABCG2-overexpressing multidrug-resistant cancer cells. Although it inhibited the drug transport function of ABCG2, it had no significant effect on the protein expression of this transporter in cancer cells. Experimental data showing that hydroxygenkwanin stimulates the ATPase activity of ABCG2, and in silico docking analysis of hydroxygenkwanin binding to the inward-open conformation of human ABCG2, further indicate that hydroxygenkwanin sensitizes ABCG2-overexpressing cancer cells by binding to the substrate-binding pocket of ABCG2 and attenuating the transport function of ABCG2. This study demonstrates the potential use of hydroxygenkwanin as an effective inhibitor of ABCG2 in drug combination therapy trials for patients with tumors expressing higher levels of ABCG2.
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Affiliation(s)
- Yan-Qing Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Megumi Murakami
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Shun-Ping Wang
- Department of Orthopedics, Taichung Veterans General Hospital, Taichung 40704, Taiwan
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung 40704, Taiwan
| | - Suresh V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA
- Correspondence: (S.V.A.); (C.-P.W.); Tel.: +1-240-760-7192 (S.V.A.); +886-3-2118800 (C.-P.W.)
| | - Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan
- Correspondence: (S.V.A.); (C.-P.W.); Tel.: +1-240-760-7192 (S.V.A.); +886-3-2118800 (C.-P.W.)
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10
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Liu C, Chen H, Zhou F, Long Q, Wu K, Lo LM, Hung TH, Liu CY, Chiou WK. Positive intervention effect of mobile health application based on mindfulness and social support theory on postpartum depression symptoms of puerperae. BMC Womens Health 2022; 22:413. [PMID: 36217135 PMCID: PMC9549653 DOI: 10.1186/s12905-022-01996-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 09/26/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE This study investigated the effects of mobile health application designed based on mindfulness and social support theory on parenting self-efficacy and postpartum depression symptoms of puerperae. METHODS We recruited 130 puerperae from a hospital in China and randomized them to an App use group (n = 65) and a waiting control group (n = 65). The App group underwent an 8-week app use intervention while the control group underwent no intervention. We measured four main variables (mindfulness, perceived social support, maternal parental self-efficacy and postpartum depressive symptoms) before and after the App use intervention. RESULTS In the App group, perceived social support, maternal parental self-efficacy were significantly higher and postpartum depressive symptoms was significantly lower. In the control group, there were no significant differences in any of the four variables between the pre-test and post-test. CONCLUSIONS Our findings indicated that the mobile health application may help to improve perceived social support, maternal self-efficacy and reduce postpartum depressive symptoms. The finding of the mobile health application's effect extends our understanding of integrative effects of mindfulness and perceived social support on reduction of postpartum depressive symptoms and suggests clinical potentials in the treatment of postpartum depressive symptoms.
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Affiliation(s)
- Chao Liu
- grid.495500.d0000 0004 1762 5592School of Journalism and Communication, Hua Qiao University, School of Film and Communication, Xiamen University of Technology, Department of Economic and Management, Suzhou Vocational Institute of Industrial Technology, Xiamen, 361021 China ,grid.145695.a0000 0004 1798 0922Director of Business Analytics Research Center, Chang Gung University, Taoyuan, 33302 Taiwan
| | - Hao Chen
- grid.495500.d0000 0004 1762 5592School of Journalism and Communication, Hua Qiao University, School of Film and Communication, Xiamen University of Technology, Department of Economic and Management, Suzhou Vocational Institute of Industrial Technology, Xiamen, 361021 China ,grid.145695.a0000 0004 1798 0922Director of Business Analytics Research Center, Chang Gung University, Taoyuan, 33302 Taiwan
| | - Fang Zhou
- grid.495500.d0000 0004 1762 5592School of Journalism and Communication, Hua Qiao University, School of Film and Communication, Xiamen University of Technology, Department of Economic and Management, Suzhou Vocational Institute of Industrial Technology, Xiamen, 361021 China
| | - Qiqi Long
- grid.8547.e0000 0001 0125 2443Shanghai Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200090 China
| | - Kan Wu
- grid.145695.a0000 0004 1798 0922Director of Business Analytics Research Center, Chang Gung University, Taoyuan, 33302 Taiwan ,grid.413801.f0000 0001 0711 0593Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, 33302 Taiwan
| | - Liang-Ming Lo
- grid.145695.a0000 0004 1798 0922Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Tai-Ho Hung
- grid.145695.a0000 0004 1798 0922Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Chia-Yih Liu
- grid.413801.f0000 0001 0711 0593Department of Psychiatry, Chang Gung Memorial Hospital, Taipei, 10507 Taiwan
| | - Wen-Ko Chiou
- grid.413801.f0000 0001 0711 0593Department of Psychiatry, Chang Gung Memorial Hospital, Taipei, 10507 Taiwan ,grid.145695.a0000 0004 1798 0922Department of Industrial Design, Chang Gung University, Taoyuan, 33302 Taiwan ,grid.440372.60000 0004 1798 0973Department of Industrial Engineering and Management, Ming Chi University of Technology, New Taipei, 24301 Taiwan
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11
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Wu CP, Hsieh YJ, Tseng HY, Huang YH, Li YQ, Hung TH, Wang SP, Wu YS. The WD repeat-containing protein 5 (WDR5) antagonist WDR5-0103 restores the efficacy of cytotoxic drugs in multidrug-resistant cancer cells overexpressing ABCB1 or ABCG2. Biomed Pharmacother 2022; 154:113663. [PMID: 36081287 DOI: 10.1016/j.biopha.2022.113663] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/31/2022] [Accepted: 09/02/2022] [Indexed: 11/02/2022] Open
Abstract
The development of multidrug resistance (MDR) is one of the major challenges in the treatment of cancer which is caused by the overexpression of the ATP-binding cassette (ABC) transporters ABCB1 (P-glycoprotein) and/or ABCG2 (BCRP/MXR/ABCP) in cancer cells. These transporters are capable of reducing the efficacy of cytotoxic drugs by actively effluxing them out of cancer cells. Since there is currently no approved treatment for patients with multidrug-resistant tumors, the drug repurposing approach provides an alternative route to identify agents to reverse MDR mediated by ABCB1 and/or ABCG2 in multidrug-resistant cancer cells. WDR5-0103 is a histone H3 lysine 4 (H3K4) methyltransferase inhibitor that disrupts the interaction between the WD repeat-containing protein 5 (WDR5) and mixed-lineage leukemia (MLL) protein. In this study, the effect of WDR5-0103 on MDR mediated by ABCB1 and ABCG2 was determined. We found that in a concentration-dependent manner, WDR5-0103 could sensitize ABCB1- and ABCG2-overexpressing multidrug-resistant cancer cells to conventional cytotoxic drugs. Our results showed that WDR5-0103 reverses MDR and improves drug-induced apoptosis in multidrug-resistant cancer cells by inhibiting the drug-efflux function of ABCB1 and ABCG2, without altering the protein expression of ABCB1 or ABCG2. The potential sites of interactions of WDR5-0103 with the drug-binding pockets of ABCB1 and ABCG2 were predicted by molecular docking. In conclusion, the MDR reversal activity of WDR5-0103 demonstrated here indicates that it could be used in combination therapy to provide benefits to a subset of patients with tumor expressing high levels of ABCB1 or ABCG2.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Molecular and Medicine Research Center, Chang Gung University, Taoyuan, Taiwan; Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.
| | - Ya-Ju Hsieh
- Molecular and Medicine Research Center, Chang Gung University, Taoyuan, Taiwan.
| | - Han-Yu Tseng
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Yan-Qing Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan.
| | - Shun-Ping Wang
- Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung, Taiwan.
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12
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Huang L, Hung TH. Reply to the letter to editor: "Gestational or non-gestational choriocarcinoma - A diagnostic dilemma". Taiwan J Obstet Gynecol 2022; 61:565. [PMID: 35595464 DOI: 10.1016/j.tjog.2022.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2022] [Indexed: 10/18/2022] Open
Affiliation(s)
- Lulu Huang
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Keelung, Taiwan; Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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13
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Wu CP, Murakami M, Wu YS, Lin CL, Li YQ, Huang YH, Hung TH, Ambudkar SV. The multi-targeted tyrosine kinase inhibitor SKLB610 resensitizes ABCG2-overexpressing multidrug-resistant cancer cells to chemotherapeutic drugs. Biomed Pharmacother 2022; 149:112922. [PMID: 36068781 PMCID: PMC10506422 DOI: 10.1016/j.biopha.2022.112922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 11/18/2022] Open
Abstract
The overexpression of ATP-binding cassette (ABC) transporter ABCB1 (P-glycoprotein) or ABCG2 (BCRP/MXR/ABCP) in cancer cells is frequently associated with the development of multidrug resistance (MDR) in cancer patients, which remains a major obstacle to effective cancer treatment. By utilizing energy derived from ATP hydrolysis, both transporters have been shown to reduce the chemosensitivity of cancer cells by actively effluxing cytotoxic anticancer drugs out of cancer cells. Knowing that there are presently no approved drugs or other therapeutics for the treatment of multidrug-resistant cancers, in recent years, studies have investigated the repurposing of tyrosine kinase inhibitors (TKIs) to act as agents against MDR mediated by ABCB1 and/or ABCG2. SKLB610 is a multi-targeted TKI with potent activity against vascular endothelial growth factor receptor 2 (VEGFR2), platelet-derived growth factor receptor (PDGFR), and fibroblast growth factor receptor 2 (FGFR2). In this study, we investigate the interaction of SKLB610 with ABCB1 and ABCG2. We discovered that neither ABCB1 nor ABCG2 confers resistance to SKLB610, but SKLB610 selectively sensitizes ABCG2-overexpressing multidrug-resistant cancer cells to cytotoxic anticancer agents in a concentration-dependent manner. Our data indicate that SKLB610 reverses ABCG2-mediated MDR by attenuating the drug-efflux function of ABCG2 without affecting its total cell expression. These findings are further supported by results of SKLB610-stimulated ABCG2 ATPase activity and in silico docking of SKLB610 in the drug-binding pocket of ABCG2. In summary, we reveal the potential of SKLB610 to overcome resistance to cytotoxic anticancer drugs, which offers an additional treatment option for patients with multidrug-resistant cancers and warrants further investigation.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan 33302, Taiwan; Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan.
| | - Megumi Murakami
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, United States
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung 40704, Taiwan
| | - Chun-Ling Lin
- Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yan-Qing Li
- Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan 33302, Taiwan; Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 10507, Taiwan; Department of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, United States
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14
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Sung CA, Lin TY, Lee HN, Chan KS, Hung TH, Shaw SW. Maternal outcome of selective feticide due to fetal anomaly in late trimester: A retrospective 10 years' experience in Taiwan. J Chin Med Assoc 2022; 85:212-215. [PMID: 34412066 DOI: 10.1097/jcma.0000000000000610] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Feticide was suggested to avoid delivering children with abnormalities. Recently, twin pregnancies have increased. Selective feticide was proposed to achieve a good outcome of pregnancy. This study aimed to evaluate the performance of feticide in twin pregnancy with fetal anomaly. METHODS This was a retrospective study enrolled from 2009 to 2018. A total of 68 pregnancies with fetal anomalies received feticide. Potassium chloride was injected into the left ventricle to induce fetal asystole. Maternal and fetal characteristics of 16 dichorionic twins were documented to compare before and after 24th gestational week. RESULTS All pregnant women received feticide without any maternal or fetal complication. The reasons for choosing feticide were divided into four groups, including morphologic defect (61.8%), genetic-chromosomal abnormality (30.9%), obstetrical complication (5.9%), and maternal request (1.5%). Mean gestational age at delivery was significantly higher in dichorionic twins who underwent selective feticide before than after 24th gestational week (36.7 vs 33.4, p = 0.04). CONCLUSION Intracardiac injection of potassium chloride was effective for feticide and safe for mothers and fetuses. Selective feticide served as an alternative approach for twin pregnancy with fetal anomaly after sufficient discussion.
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Affiliation(s)
- Chen-Ai Sung
- College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
| | - Tzu-Yi Lin
- College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC
| | - Han-Ni Lee
- College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC
| | - Kok-Seong Chan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
| | - Tai-Ho Hung
- College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
| | - Steven W Shaw
- College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
- Prenatal Cell and Gene Therapy Group, Institute for Women's Health University College London, London, United Kingdom
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15
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Hung TH, Wu CP, Chen SF. Differential Changes in Akt and AMPK Phosphorylation Regulating mTOR Activity in the Placentas of Pregnancies Complicated by Fetal Growth Restriction and Gestational Diabetes Mellitus With Large-For-Gestational Age Infants. Front Med (Lausanne) 2021; 8:788969. [PMID: 34938752 PMCID: PMC8685227 DOI: 10.3389/fmed.2021.788969] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/18/2021] [Indexed: 01/04/2023] Open
Abstract
Background: Dysregulation of placental mechanistic target of rapamycin (mTOR) activity has been implicated in the pathophysiology of pregnancies complicated by idiopathic fetal growth restriction (FGR) and gestational diabetes mellitus (GDM) with large-for-gestational-age (LGA) infants. However, the underlying mechanisms remain unclear. Methods: We obtained placentas from women with normal pregnancies (n = 11) and pregnancies complicated by FGR (n = 12) or GDM with LGA infants (n = 12) to compare the levels of total and phosphorylated forms of Akt, AMPK, TSC2, and mTOR among the three groups and used primary cytotrophoblast cells isolated from 30 normal term placentas to study the effects of oxygen–glucose deprivation (OGD) and increasing glucose concentrations on the changes of these factors in vitro. Results: Placentas from FGR pregnancies had lower phosphorylated Akt (p-Akt) levels (P < 0.05), higher p-AMPKα levels (P < 0.01), and lower mTOR phosphorylation (P < 0.05) compared to that of normal pregnant women. Conversely, women with GDM and LGA infants had higher p-Akt (P < 0.001), lower p-AMPKα (P < 0.05), and higher p-mTOR levels (P < 0.05) in the placentas than normal pregnant women. Furthermore, primary cytotrophoblast cells subjected to OGD had lower p-Akt and p-mTOR (both P < 0.05) and higher p-AMPKα levels (P < 0.05) than those cultured under standard conditions, but increasing glucose concentrations had opposite effects on the respective levels. Administering compound C, an AMPK inhibitor, did not significantly affect Akt phosphorylation but partially reversed mTOR phosphorylation. Administering LY294002, an Akt inhibitor, decreased p-mTOR levels, but did not change the levels of total and phosphorylated AMPKα. Conclusion: These results suggest that Akt and AMPK are involved in the regulation of trophoblast mTOR activity in the placentas of pregnancies complicated by FGR and GDM with LGA infants.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan.,Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chung-Pu Wu
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Graduate Institute of Biomedical Sciences, Department of Physiology and Pharmacology and Molecular Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan
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16
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Huang L, Huang SY, Lee AL, Hung TH. Choriocarcinoma in a viable pregnancy with the rare presentation of intractable lower back pain. Taiwan J Obstet Gynecol 2021; 60:1098-1102. [PMID: 34794745 DOI: 10.1016/j.tjog.2021.09.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2020] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVE We present a case of choriocarcinoma in a viable pregnancy with the rare presentation of intractable lower back pain. CASE REPORT The patient is a 34-year-old multiparous woman with her second pregnancy, and a history of scoliosis with spinal fixation. Her first pregnancy was uneventful, with a term vaginal delivery. She was hospitalized four times due to intractable back pain from 25 to 31 weeks, and terminated at 31 weeks. The placenta was unremarkable on gross examination. Postpartum, the patient developed obstructive ileus, requiring a rectosigmoid resection. She was diagnosed with metastatic choriocarcinoma to the liver, para-aortic lymph nodes, and mesentery. A week later, she developed micro-thrombosis of all limbs, massive ascites, pleural effusion. Patient refused chemotherapy and died on post-operative Day 15. CONCLUSION Presentation of choriocarcinoma in pregnancy varies widely. Clinicians should consider the differential diagnosis of choriocarcinoma when faced with abnormal unexplained symptoms during pregnancy.
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Affiliation(s)
- Lulu Huang
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Keelung, Taiwan.
| | - Shi-Yin Huang
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Keelung, Taiwan.
| | - Ai-Lun Lee
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Keelung, Taiwan.
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Keelung, Taiwan; Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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17
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Hung TH, Huang JW. Severe duodenal ulcer behaves like gastroduodenal intussusception. Ann R Coll Surg Engl 2021; 104:e14-e16. [PMID: 34730406 DOI: 10.1308/rcsann.2021.0067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Intestinal intussusception is uncommon in adults. As a retroperitoneal structure, gastroduodenal intussusception is extremely rare. The leading cause of intussusception is reported to be a tumour, either benign or malignant. The case presented may be the first of gastroduodenal intussusception resulting from severe peptic ulcer. A 64-year-old man was admitted with epigastralgia, appetite loss and melena for 1 week. He had history of peptic ulcer and reflux esophagitis for 9 years, caused by Helicobacter pylori infection; eradication therapy had been performed 5 years previously. This time, an abdominal computed tomography scan showed duodenogastric intussusception and gastric outlet obstruction. Preoperative biopsy failed for complete obstruction; thus, the patient underwent Whipple procedure for complete resection under impression of malignancy. The postoperative course was uneventful. Pathological findings for the specimen showed gastric and duodenal ulcer. Progressive peptic ulcer after eradication therapy is rarely seen, and eradication therapy is used widely to treat H. pylori infection. The eradication rate is extremely high in Taiwan for lower first-line antibiotic as clarithromycin resistance is low due to a policy restricting antimicrobial usage. Early eradication therapy is highly recommended for patients with H. pylori infection. We emphasise the importance of regular follow-up for the non-significant correlation of severity of gastric ulcer with clinical symptoms. When ulceration progresses or non-invasive treatments fail early surgical interventions should be applied to these anatomic alterations.
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Affiliation(s)
- T H Hung
- Kaohsiung Medical University, Taiwan.,Kaohsiung Medical University Hospital, Taiwan
| | - J W Huang
- Kaohsiung Municipal Siaogang Hospital, Taiwan
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18
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Wu CP, Li YQ, Hung TH, Chang YT, Huang YH, Wu YS. Sophoraflavanone G Resensitizes ABCG2-Overexpressing Multidrug-Resistant Non-Small-Cell Lung Cancer Cells to Chemotherapeutic Drugs. J Nat Prod 2021; 84:2544-2553. [PMID: 34496204 DOI: 10.1021/acs.jnatprod.1c00584] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Elevated expression of the ATP-binding cassette (ABC) drug transporter ABCG2 in cancer cells contributes to the development of the multidrug resistance phenotype in patients with advanced non-small-cell lung cancer (NSCLC). Due to the lack of U.S. Food and Drug Administration (FDA)-approved synthetic inhibitors of ABCG2, significant efforts have been invested in discovering bioactive compounds of plant origin that are capable of reversing ABCG2-mediated multidrug resistance in cancer cells. Sophoraflavanone G (SFG), a phytoncide isolated from the plant species Sophora flavescens, is known to possess a wide spectrum of pharmacological activities, including antibacterial, anti-inflammatory, antimalarial, and antiproliferative effects. In the present study, the chemosensitizing effect of SFG in ABCG2-overexpressing NSCLC cells was investigated. Experimental results demonstrate that at subtoxic concentrations SFG significantly reversed ABCG2-mediated multidrug resistance in a concentration-dependent manner. Additional biochemical data and in silico docking analysis of SFG to the inward-open conformation of human ABCG2 indicate that SFG inhibited the drug transport function of ABCG2 by interacting with residues within the transmembrane substrate-binding pocket of ABCG2. Collectively, these findings provide evidence that SFG has the potential to be further tested as an effective inhibitor of ABCG2 to improve the efficacy of therapeutic drugs in patients with advanced NSCLC.
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Affiliation(s)
- Chung-Pu Wu
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 33305, Taiwan
| | | | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei 33305, Taiwan
| | | | | | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung 40704, Taiwan
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Lin TY, Hsieh TT, Cheng PJ, Hung TH, Chan KS, Tsai C, Shaw SW. Taiwanese Clinical Experience with Noninvasive Prenatal Testing for DiGeorge Syndrome. Fetal Diagn Ther 2021; 48:672-677. [PMID: 34569534 DOI: 10.1159/000519057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 08/16/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVE DiGeorge syndrome (DGS) is associated with microdeletions of chromosome 22q11. It is the second most common cause of congenital heart disease and is an important consideration whenever a conotruncal cardiac anomaly is identified. The availability of noninvasive prenatal testing (NIPT) is altering the practice of prenatal genetics and maternal-fetal medicine, resulting in a decline in invasive testing. Antenatal ultrasound and other biomarkers have their own limitation. NIPT was proposed to screen DGS with cell-free DNA in Taiwan. Here, we present our experience of prenatal diagnosis of DGS in our center. METHODS This was a retrospective study between November 1, 2019, and August 31, 2020, in Taiwan. Data were collected from 7,826 pregnant women self-referred for DGS screening with massive parallel shotgun sequencing-based NIPT. High-risk cases subsequently received amniocentesis for array comparative genomic hybridization (aCGH) to confirm the diagnosis. Characteristics of pregnancies were documented when participants received the test. Report of NIPT was completed 2 weeks after the test. Follow-up on high-risk cases was completed by telephone interview on January 30, 2021. RESULTS Thirteen cases showed high risk by NIPT, and 7 cases were confirmed by aCGH. The sensitivity and specificity were 100% (95% confidence interval [CI] 64.57-100.00%) and 99.92% (95% CI 99.83-99.96%). The prevalence of DGS was 1 in 1,118 pregnancies. The positive predictive rate was 53.85% (95% CI 29.14-76.79%). One true positive (TP) showed US anomaly, and 5 TPs selected termination. DISCUSSION/CONCLUSION NIPT demonstrated good performance in DGS screening. Detection of 22q11.2 deletion could be combined with routine screening to facilitate proper intervention.
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Affiliation(s)
- Tzu-Yi Lin
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - T'sang-T'ang Hsieh
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Po-Jen Cheng
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Obstetrics and Gynecology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tai-Ho Hung
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Kok-Seong Chan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | | | - Steven W Shaw
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Prenatal Cell and Gene Therapy Group, Institute for Women's Health University College London, London, United Kingdom
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20
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Chuang YC, Huang L, Lee WY, Shaw SW, Chu FL, Hung TH. The association between weight gain at different stages of pregnancy and risk of gestational diabetes mellitus. J Diabetes Investig 2021; 13:359-366. [PMID: 34415679 PMCID: PMC8847131 DOI: 10.1111/jdi.13648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 08/02/2021] [Accepted: 08/17/2021] [Indexed: 12/14/2022] Open
Abstract
AIMS/INTRODUCTION Women with excessive gestational weight gain (GWG) are at a higher risk for complications during pregnancy, such as preeclampsia. However, the association between excessive GWG and gestational diabetes mellitus (GDM) remains unclear. MATERIALS AND METHODS We retrospectively reviewed 8,352 women from our obstetric database with singleton pregnancies who gave birth after 28 completed weeks of gestation between January 1, 2012, and December 31, 2016, excluding pregnancies complicated by fetal anomalies, fetal death, and overt diabetes. Diagnosis of GDM was based on the criteria recommended by the International Association of Diabetes and Pregnancy Study Groups. We used two classification methods to define excessive GWG: a weight gain above the 90th percentile of the population, or exceeding the upper range recommended by the Institute of Medicine, stratified by pre-pregnancy body mass index. Statistical analysis was performed using multiple logistic regression to determine the association between excessive GWG and the risk of GDM. RESULTS Overall, 1,129 women (13.5%) were diagnosed with GDM. There was no difference in GWG between women with and without GDM in the first trimester and before GDM screening. Women with GDM had significantly less GWG in the second trimester, after GDM screening, and throughout the whole gestation than women without GDM. No correlation was found between excessive GWG in the first and second trimesters, before GDM screening, and the later development of GDM. CONCLUSIONS Our results indicate that excessive GWG prior to GDM screening is not associated with an increased risk of GDM.
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Affiliation(s)
- Ya-Chun Chuang
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Lulu Huang
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Wan-Ying Lee
- Department of Nursing, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Steven W Shaw
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Fu-Ling Chu
- Department of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan.,Department of Medical Nutrition Therapy, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan.,Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
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21
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Wu CP, Murakami M, Wu YS, Chi YC, Hsiao SH, Huang YH, Hung TH, Ambudkar SV. Branebrutinib (BMS-986195), a Bruton's Tyrosine Kinase Inhibitor, Resensitizes P-Glycoprotein-Overexpressing Multidrug-Resistant Cancer Cells to Chemotherapeutic Agents. Front Cell Dev Biol 2021; 9:699571. [PMID: 34350184 PMCID: PMC8326665 DOI: 10.3389/fcell.2021.699571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/28/2021] [Indexed: 12/02/2022] Open
Abstract
The overexpression of P-glycoprotein (P-gp/ABCB1), an ATP-binding cassette (ABC) drug transporter, often contributes to the development of multidrug resistance (MDR) in cancer cells. P-gp mediates the ATP hydrolysis-dependent efflux of a wide range of chemotherapeutic agents out of cancer cells, thereby reducing the intracellular drug accumulation and decreasing the chemosensitivity of these multidrug-resistant cancer cells. Studies with tyrosine kinase inhibitors (TKIs) in P-gp-overexpressing cells have shown that certain TKIs could reverse MDR mediated by P-gp, while some TKIs are transported by P-gp. In the present work, we explored the prospect of repositioning branebrutinib (BMS-986195), a highly selective inhibitor of Bruton’s tyrosine kinase (BTK), to resensitize P-gp-overexpressing multidrug-resistant cancer cells to chemotherapeutic agents. Our results demonstrated that branebrutinib is capable of reversing P-gp-mediated MDR at sub-toxic concentrations, most likely by directly inhibiting the drug transport function of P-gp. Our findings were supported by the result of branebrutinib stimulating the ATPase activity of P-gp in a concentration-dependent manner and the in silico study of branebrutinib binding to the substrate-binding pocket of P-gp. In addition, we found that branebrutinib is equally cytotoxic to drug-sensitive parental cell lines and the respective P-gp-overexpressing multidrug-resistant variants, suggesting that it is unlikely that the overexpression of P-gp in cancer cells plays a significant role in reduced susceptibility or resistance to branebrutinib. In summary, we discovered an additional pharmacological action of branebrutinib against the activity of P-gp, which should be investigated further in future drug combination studies.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Megumi Murakami
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, United States
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung, Taiwan
| | - Ya-Chen Chi
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Medicine, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, United States
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22
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Hung TH, Liu YC, Wu CH, Chen CC, Chao H, Yang FY, Chen SF. Antenatal low-intensity pulsed ultrasound reduces neurobehavioral deficits and brain injury following dexamethasone-induced intrauterine growth restriction. Brain Pathol 2021; 31:e12968. [PMID: 33960564 PMCID: PMC8549022 DOI: 10.1111/bpa.12968] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 04/01/2021] [Accepted: 04/06/2021] [Indexed: 12/01/2022]
Abstract
Intrauterine growth restriction (IUGR) is a leading cause of perinatal mortality and morbidity, and IUGR survivors are at increased risk of neurodevelopmental deficits. No effective interventions are currently available to improve the structure and function of the IUGR brain before birth. This study investigated the protective effects of low‐intensity pulsed ultrasound (LIPUS) on postnatal neurodevelopmental outcomes and brain injury using a rat model of IUGR induced by maternal exposure to dexamethasone (DEX). Pregnant rats were treated with DEX (200 μg/kg, s.c.) and LIPUS daily from gestational day (GD) 14 to 19. Behavioral assessments were performed on the IUGR offspring to examine neurological function. Neuropathology, levels of neurotrophic factors, and CaMKII‐Akt‐related molecules were assessed in the IUGR brain, and expression of glucose and amino acid transporters and neurotrophic factors were examined in the placenta. Maternal LIPUS treatment increased fetal weight, fetal liver weight, and placental weight following IUGR. LIPUS treatment also increased neuronal number and myelin protein expression in the IUGR brain, and attenuated neurodevelopmental deficits at postnatal day (PND) 18. However, the number of oligodendrocytes or microglia was not affected. These changes were associated with the upregulation of brain‐derived neurotrophic factor (BDNF) and placental growth factor (PlGF) protein expression, and enhancement of neuronal CaMKII and Akt activation in the IUGR brain at PND 1. Additionally, LIPUS treatment promoted glucose transporter (GLUT) 1 production and BDNF expression in the placenta, but had no effects on GLUT3 or amino acid transporter expression. Our findings suggest that antenatal LIPUS treatment may reduce IUGR‐induced brain injury via enhancing cerebral BDNF/CaMKII/Akt signaling. These data provide new evidence that LIPUS stimulation could be considered for antenatal neuroprotective therapy in IUGR.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Cheng Liu
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chun-Hu Wu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Chien-Cheng Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan.,Graduate Institute of Gerontology and Health Care Management, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Hsien Chao
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Feng-Yi Yang
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan.,Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan
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23
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Hung TH, Hsu TY, Tung TH, Tsai CC, Ou CY, Chung FF, Wan GH. The association between maternal exposure to outdoor air pollutants, inflammatory response, and birth weight in healthy women. Environ Res 2021; 196:110921. [PMID: 33639148 DOI: 10.1016/j.envres.2021.110921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 02/18/2021] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Increased maternal inflammatory response has been noted in women with pregnancies complicated by preterm birth and small-for-gestational age infants. However, the association between gestational exposure to air pollutants, maternal inflammatory response, and fetal growth remains unclear. In this study, we aimed to investigate the association between exposure to air pollutants during pregnancy and the concentration of inflammatory indicators in maternal and fetal circulations, as well as fetal growth. We recruited 108 healthy pregnant women living in northern (n = 55) and southern (n = 53) areas of Taiwan and prospectively collected information of exposure to outdoor air pollutants throughout gestation. Maternal blood from each trimester and umbilical cord blood after delivery were collected and analyzed for inflammatory indicators including high sensitivity C-reactive protein (hs-CRP), interleukin-1β (IL-1β), and tumor necrosis factor (TNF)-α. Our results showed that exposure to particulate matter less than or equal to 10 μm (PM10) and ozone (O3) during the first trimester had a direct effect on reduction of birth weight, but the direct effect of PM10 mediated by hs-CRP and the direct effect of O3 mediated by TNF-α on fetal birth weight were not significant. Exposure to PM10 and PM2.5 during the second and third trimesters also directly affected birth weight. Furthermore, exposure to sulfur dioxide (SO2) caused changes in the concentrations of TNF-α in maternal blood during the second trimester, which subsequently resulted in reduced fetal weight. Together, these results indicate that exposure to air pollutants may cause both direct and indirect effects on the reduction of fetal weight.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan; Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Te-Yao Hsu
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Tao-Hsin Tung
- Department of Medical Research and Education, Cheng-Hsin General Hospital, Taipei, Taiwan
| | - Ching-Chang Tsai
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chia-Yu Ou
- Department of Obstetrics, Po-Zen Hospital, Kaohsiung, Taiwan
| | - Fen-Fang Chung
- Department of Nursing, College of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Department of Nursing, Linkuo Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Gwo-Hwa Wan
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan; Department of Respiratory Therapy, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Respiratory Care, Chang Gung University of Science and Technology, Chiayi, Taiwan; Center for Environmental Sustainability and Human Health, Ming Chi University of Technology, Taishan, New Taipei, Taiwan.
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24
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Wu CP, Hung TH, Lusvarghi S, Chu YH, Hsiao SH, Huang YH, Chang YT, Ambudkar SV. The third-generation EGFR inhibitor almonertinib (HS-10296) resensitizes ABCB1-overexpressing multidrug-resistant cancer cells to chemotherapeutic drugs. Biochem Pharmacol 2021; 188:114516. [PMID: 33713643 DOI: 10.1016/j.bcp.2021.114516] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 02/07/2023]
Abstract
The overexpression of the human ATP-binding cassette (ABC) drug transporter ABCB1 (P-glycoprotein, P-gp) or ABCG2 (breast cancer resistance protein, BCRP) in cancer cells often contributes significantly to the development of multidrug resistance (MDR) in cancer patients. Previous reports have demonstrated that some epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) could modulate the activity of ABCB1 and/or ABCG2 in human cancer cells, whereas some EGFR TKIs are transport substrates of these transporters. Almonertinib (HS-10296) is a promising, orally available third-generation EGFR TKI for the treatment of EGFR T790M mutation-positive non-small cell lung cancer (NSCLC) in patients who have progressed on or after other EGFR TKI therapies. Additional clinical trials are currently in progress to study almonertinib as monotherapy and in combination with other agents in patients with NSCLC. In the present work, we found that neither ABCB1 nor ABCG2 confers significant resistance to almonertinib. More importantly, we discovered that almonertinib was able to reverse MDR mediated by ABCB1, but not ABCG2, in multidrug-resistant cancer cells at submicromolar concentrations by inhibiting the drug transport activity of ABCB1 without affecting its expression level. These findings are further supported by in silico docking of almonertinib in the drug-binding pocket of ABCB1. In summary, our study revealed an additional activity of almonertinib to re-sensitize ABCB1-overexpressing multidrug-resistant cancer cells to conventional chemotherapeutic drugs, which may be beneficial for cancer patients and warrant further investigation.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, and College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.
| | - Tai-Ho Hung
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Sabrina Lusvarghi
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, United States
| | - Yi-Hsuan Chu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, and College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Yu-Tzu Chang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, and College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, United States
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25
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Chu FC, Hii LY, Hung TH, Lo LM, Hsieh TT, Shaw SW. A novel de novo mutation in COL2A1 gene associated with fetal skeletal dysplasia. Taiwan J Obstet Gynecol 2021; 60:359-362. [PMID: 33678343 DOI: 10.1016/j.tjog.2021.01.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2020] [Indexed: 10/22/2022] Open
Abstract
OBJECTIVE Skeletal dysplasias, caused by genetic mutations, are a heterogenous group of heritable disorders affecting bone development during fetal life. Stickler syndrome, one of the skeletal dysplasias, is an autosomal dominant connective tissue disorder caused by abnormal collagen synthesis owing to a genetic mutation in COL2A1. CASE REPORT We present the case of a 38-year-old multipara woman whose first trimester screening showed a normal karyotype. However, the bilateral femur and humerus length symmetrically shortened after 20 weeks. Next-generation sequencing for mutations in potential genes leading to skeletal dysplasia detected a novel de novo mutation (c.1438G > A, p.Gly480Arg) in COL2A1, causing Stickler syndrome type 1. This pathogenic mutation might impair or destabilize the collagen structure, leading to collagen type II, IX, and XI dysfunction. CONCLUSION We identified a novel de novo mutation in COL2A1 related to the STL1 syndrome and delineated the extent of the skeletal dysplasia disease spectrum.
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Affiliation(s)
- Fu-Chieh Chu
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ling-Yien Hii
- Department of Obstetrics and Gynecology, Sabah Women's and Children's Hospital, Sabah, Malaysia
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Liang-Ming Lo
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Steven W Shaw
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; School of Medicine, Chang Gung University, Taoyuan, Taiwan.
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26
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Hung TH, Chuang YC, Huang L. The Association Between Placental Residual Blood Volume and Two Placental Transfusion Methods After Delivery at Term. Front Pediatr 2021; 9:768075. [PMID: 34820345 PMCID: PMC8606743 DOI: 10.3389/fped.2021.768075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/12/2021] [Indexed: 11/29/2022] Open
Abstract
Background: Despite reports of the beneficial effects, such as increasing hemoglobin level and iron store in the neonatal period, of delayed cord clamping, or umbilical cord milking after delivery in healthy term-born infants, the duration of delayed clamping or rounds of milking in most previous reports were determined arbitrarily and varied widely across different studies. Methods: We prospectively recruited 80 women with normal singleton pregnancies at 38-40 weeks' gestation. Participants were classified according to the mode of delivery and randomly assigned to either collecting blood from the placenta by umbilical cord drainage (CD) or cord milking (CM), with the placenta left in the uterus. The volume of blood collected, the duration of CD, and the number of rounds of CM were recorded. Results: Collected placental residual blood volume positively correlated with birth weight, placental weight, and length of the cord. When 80% of the total placental residual blood volume collected was set as the threshold, more than 80% of women who delivered vaginally reached this level within 60 s of CD or seven repetitions of CM. This amount of blood could be obtained within 120 s of CD or after seven repetitions of CM in more than 80% of women who underwent cesarean delivery. Conclusion: In most women, regardless of birth weight and placental weight, more than 80% of placental residual blood volume could be collected by CD within 60 s after vaginal delivery, 120 s after cesarean delivery, and seven repetitions of CM in both vaginal and cesarean deliveries.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan.,Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ya-Chun Chuang
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Lulu Huang
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.,Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
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27
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Wu CP, Hung CY, Lusvarghi S, Huang YH, Tseng PJ, Hung TH, Yu JS, Ambudkar SV. Overexpression of ABCB1 and ABCG2 contributes to reduced efficacy of the PI3K/mTOR inhibitor samotolisib (LY3023414) in cancer cell lines. Biochem Pharmacol 2020; 180:114137. [PMID: 32634436 DOI: 10.1016/j.bcp.2020.114137] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/26/2020] [Accepted: 07/02/2020] [Indexed: 12/15/2022]
Abstract
LY3023414 (samotolisib) is a promising new dual inhibitor of phosphoinositide 3-kinase (PI3K) and mammalian target of rapamycin (mTOR). Currently, multiple clinical trials are underway to evaluate the efficacy of LY3023414 in patients with various types of cancer. However, the potential mechanisms underlying acquired resistance to LY3023414 in human cancer cells still remain elusive. In this study, we investigated whether the overexpression of ATP-binding cassette (ABC) drug transporters such as ABCB1 and ABCG2, one of the most common mechanisms for developing multidrug resistance, may potentially reduce the efficacy of LY3023414 in human cancer cells. We demonstrated that the intracellular accumulation of LY3023414 in cancer cells was significantly reduced by the drug efflux function of ABCB1 and ABCG2. Consequently, the cytotoxicity and efficacy of LY3023414 for inhibiting the activation of the PI3K pathway and induction of G0/G1 cell-cycle arrest were substantially reduced in cancer cells overexpressing ABCB1 or ABCG2, which could be restored using tariquidar or Ko143, respectively. Furthermore, stimulatory effect of LY3023414 on the ATPase activity of ABCB1 and ABCG2, as well as in silico molecular docking analysis of LY3023414 binding to the substrate-binding pockets of these transporters provided additional insight into the manner in which LY3023414 interacts with both transporters. In conclusion, we report that LY3023414 is a substrate for ABCB1 and ABCG2 transporters implicating their role in the development of resistance to LY3023414, which can have substantial clinical implications and should be further investigated.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, Taiwan; Department of Physiology and Pharmacology, Taiwan; Molecular Medicine Research Center, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.
| | | | - Sabrina Lusvarghi
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, United States
| | | | | | - Tai-Ho Hung
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Jau-Song Yu
- Graduate Institute of Biomedical Sciences, Taiwan; Molecular Medicine Research Center, Taiwan; Department of Biochemistry and Molecular Biology, Taiwan; Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, United States
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Wu CP, Lusvarghi S, Hsiao SH, Liu TC, Li YQ, Huang YH, Hung TH, Ambudkar SV. Licochalcone A Selectively Resensitizes ABCG2-Overexpressing Multidrug-Resistant Cancer Cells to Chemotherapeutic Drugs. J Nat Prod 2020; 83:1461-1472. [PMID: 32347726 PMCID: PMC7402219 DOI: 10.1021/acs.jnatprod.9b01022] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The overexpression of the ATP-binding cassette (ABC) transporter ABCG2 has been linked to clinical multidrug resistance in solid tumors and blood cancers, which remains a significant obstacle to successful cancer chemotherapy. For years, the potential modulatory effect of bioactive compounds derived from natural sources on ABCG2-mediated multidrug resistance has been investigated, as they are inherently well tolerated and offer a broad range of chemical scaffolds. Licochalcone A (LCA), a natural chalcone isolated from the root of Glycyrrhiza inflata, is known to possess a broad spectrum of biological and pharmacological activities, including pro-apoptotic and antiproliferative effects in various cancer cell lines. In this study, the chemosensitization effect of LCA was examined in ABCG2-overexpressing multidrug-resistant cancer cells. Experimental data demonstrated that LCA inhibits the drug transport function of ABCG2 and reverses ABCG2-mediated multidrug resistance in human multidrug-resistant cancer cell lines in a concentration-dependent manner. Results of LCA-stimulated ABCG2 ATPase activity and the in silico docking analysis of LCA to the inward-open conformation of human ABCG2 suggest that LCA binds ABCG2 in the transmembrane substrate-binding pocket. This study provides evidence that LCA should be further evaluated as a modulator of ABCG2 in drug combination therapy trials against ABCG2-expressing drug-resistant tumors.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Sabrina Lusvarghi
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Te-Chun Liu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Yan-Qing Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Tai-Ho Hung
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Suresh. V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-4255, United States
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Abstract
OBJECTIVE To investigate the spatial and temporal changes of soluble epoxide hydrolase (sEH) in the human placenta throughout gestation and to study the effects of hypoxia-reoxygenation (HR) on the expression of sEH in villous explants in vitro. MATERIALS AND METHODS Placental samples were obtained from women of different gestation and grouped as early (8-12 weeks, n = 10), mid- (16-28 weeks, n = 6), and late gestation (38-39 weeks, n = 10) according to gestational age. Immunohistochemistry, western blot, and real-time quantitative PCR were used to assess the cellular distribution and temporal changes of sEH. Villous explant cultures were used to study the effect of HR (8 h at 2% oxygen, followed by 16 h at 8% oxygen, two cycles) on the expression of sEH. RESULTS Using a mouse monoclonal antibody against human sEH, immunoreactivity of sEH was observed mainly localized in the cytotrophoblasts and, to a lesser extent, the syncytiotrophoblast in the villous tissues throughout gestation. Compared to villous tissues of early gestation, the levels of sEH mRNA and protein were significantly increased in villous samples of mid- and late gestation. Furthermore, villous explants subjected to HR had significantly higher levels of sEH mRNA and protein compared to villous tissues kept at 8% oxygen throughout the experiment. CONCLUSION Our results indicate that sEH is likely to play an essential role in the development of human placenta and HR is a possible factor regulating the expression of sEH in the placenta.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin Rehabilitation Medical Center, Taipei, Taiwan
| | - T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taiwan
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Abstract
BACKGROUND Maternal anemia is a risk factor for poor pregnancy outcomes and threatens maternal or fetal life. Anemia increases the risk of low birth weight and preterm birth. We aimed to determine the cutoff level of hemoglobin and risk factors for maternal anemia at admission for delivery and investigate the association between maternal anemia and adverse perinatal outcomes in contemporary Taiwanese women. METHODS About 32,234 women admitted to the Taipei Chang Gung Memorial Hospital from 2001 to 2016 were enrolled in this retrospective observational cohort study. The prevalence of pre-delivery maternal anemia in Taiwan and the maternal demographic and perinatal outcomes associated with maternal anemia was assessed. RESULTS The 10th and 5th percentile hemoglobin levels of the test cohort (2001-2008, n = 15,602) were 10.8 g/dL and 9.9 g/dL, respectively. In the study cohort (2009-2016, n = 13,026), women who were multiparous, who were aged >34 years, with history of cesarean delivery, and with history of uterine fibroids had higher prevalence of anemia. Anemic women were at increased risk of cesarean delivery, primary cesarean delivery, premature rupture of membranes, early preterm birth <34 weeks, having very low birth weight infants (<1,500 g), having large for gestational age infants, and neonatal intensive care center transfer, but at lower risk of having small for gestational age infants. CONCLUSION Maternal anemia at delivery is a risk factor for primary cesarean delivery and adverse maternal and neonatal outcomes. Furthermore, we hypothesize that maternal anemia might increase fetoplacental vasculogenesis and angiogenesis as an adaptive response.
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Affiliation(s)
- Fu-Chieh Chu
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
| | - Steven W Shaw
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
| | - Liang-Ming Lo
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
| | - T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan, ROC
- College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC
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Wu CP, Lusvarghi S, Tseng PJ, Hsiao SH, Huang YH, Hung TH, Ambudkar SV. MY-5445, a phosphodiesterase type 5 inhibitor, resensitizes ABCG2-overexpressing multidrug-resistant cancer cells to cytotoxic anticancer drugs. Am J Cancer Res 2020; 10:164-178. [PMID: 32064159 PMCID: PMC7017726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023] Open
Abstract
The overexpression of one or multiple ATP-binding cassette (ABC) transporters such as ABCB1, ABCC1 or ABCG2 in cancer cells often leads to the development of multidrug resistance phenotype and consequent treatment failure. Therefore, these transporters constitute an important target to improve the therapeutic outcome in cancer patients. In this study, we employed a drug repurposing approach to identify MY-5445, a known phosphodiesterase type 5 inhibitor, as a selective modulator of ABCG2. We discovered that by inhibiting the drug transport function of ABCG2, MY-5445 potentiates drug-induced apoptosis in ABCG2-overexpressing multidrug-resistant cancer cells and resensitizes these cells to chemotherapeutic drugs. Our data of MY-5445 stimulating the ATPase activity of ABCG2 and molecular docking analysis of its binding to the substrate-binding pocket of ABCG2 provide additional insight into the manner in which MY-5445 interacts with ABCG2. Furthermore, we found that ABCG2 does not confer resistance to MY-5445 in human cancer cells. Overall, our study revealed an additional action of MY-5445 to resensitize ABCG2-overexpressing multidrug-resistant cancer cells to conventional anticancer drugs, and this should be evaluated in future drug combination trials.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial HospitalTaipei, Taiwan
| | | | - Pin-Jung Tseng
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan
| | - Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan
| | - Tai-Ho Hung
- Department of Chinese Medicine, College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial HospitalTaipei, Taiwan
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Hung TH, Huang SY, Chen SF, Wu CP, Hsieh TT. Decreased placental apoptosis and autophagy in pregnancies complicated by gestational diabetes with large-for-gestational age fetuses. Placenta 2019; 90:27-36. [PMID: 32056548 DOI: 10.1016/j.placenta.2019.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 11/21/2019] [Accepted: 12/03/2019] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Dysregulation of placental apoptosis and autophagy are observed in pregnancy complications including preeclampsia and fetal growth restriction. However, studies of their changes in the placentas of women with gestational diabetes mellitus (GDM) show inconsistent results. We aimed to compare the changes in apoptosis, autophagy, and Bcl-2 family proteins in the placentas from women with normal pregnancies and those with GDM, with or without large-for-gestational age (LGA) infants and to investigate the effect of hyperglycemia on the changes in apoptosis, autophagy, and Bcl-2 family proteins in primary cytotrophoblastic cells. METHODS Villous tissues were obtained from normal pregnant women and those with GDM, with or without LGA infants. Primary cytotrophoblast cells were isolated from normal term placentas and cultured under standard, hyperglycemic, or hyperosmotic conditions. RESULTS Compared to placentas from normal pregnant women, those from GDM women with LGA infants were heavier, had lower beclin-1 and DRAM levels, less M30 and cleaved PARP immunoreactivity, and increased Ki-67 immunoreactivity. These changes were associated with increased Bcl-xL and decreased Bak levels. Increased glucose concentration led to lower ATG5, beclin-1, LC3B-II, p62, and DRAM levels, lower annexin V and M30-positive cell percentages, and less cleaved PARP changes compared with standard culture conditions. Hyperglycemia caused higher Bcl-xL levels and lower Bak and Bad levels than did standard culture conditions. DISCUSSION There were differential changes in apoptosis and autophagy between placentas from normal pregnant women and those from GDM women with LGA infants. Bcl-2 family proteins are likely involved in the regulation of these changes.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Shih-Yin Huang
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, Department of Physiology and Pharmacology and Molecular Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
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Wu CH, Chen CC, Hung TH, Chuang YC, Chao M, Shyue SK, Chen SF. Activation of TrkB/Akt signaling by a TrkB receptor agonist improves long-term histological and functional outcomes in experimental intracerebral hemorrhage. J Biomed Sci 2019; 26:53. [PMID: 31307481 PMCID: PMC6628494 DOI: 10.1186/s12929-019-0543-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/25/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Intracerebral hemorrhage (ICH) induces a complex sequence of apoptotic cascades that contribute to secondary neuronal damage. Tropomyosin-related kinase receptor B (TrkB) signaling plays a crucial role in promoting neuronal survival following brain damage. METHODS The present study investigated the protective effects and underlying mechanisms of TrkB activation by the specific TrkB agonist, 7,8-dihydroxyflavone (7,8-DHF), in a model of collagenase-induced ICH and in neuronal cultures. Mice subjected to collagenase-induced ICH were intraperitoneally injected with either 7,8-DHF or vehicle 10 min after ICH and, subsequently, daily for 3 days. Behavioral studies, brain edema measurement, and histological analysis were conducted. Levels of TrkB signaling-related molecules and apoptosis-related proteins were analyzed by western blots. RESULTS Treatment with 20 mg/kg 7,8-DHF significantly improved functional recovery and reduced brain damage up to 28 days post-ICH. Reduction in neuronal death, apoptosis, and brain edema were also observed in response to 7,8-DHF treatment at 3 days post-ICH. These changes were accompanied by a significant increase in the phosphorylation of TrkB and Akt (Ser473/Thr308) at 1 and 3 days, but had no effect on Erk 44/42 phosphorylation. 7,8-DHF also enhanced the phosphorylation of Ask-1 Ser967 and FOXO-1, downstream targets of Akt at 1 and 3 days. Moreover, 7,8-DHF increased brain-derived neurotrophic factor levels at 1 day. In primary cultured neurons stimulated with hemin, 7,8-DHF promoted survival and reduced apoptosis. Furthermore, delaying the administration of 7,8-DHF to 3 h post-ICH reduced brain tissue damage and neuronal death. CONCLUSIONS Our findings demonstrate that the activation of TrkB signaling by 7,8-DHF protects against ICH via the Akt, but not the Erk, pathway. These data provide new insights into the role of TrkB signaling deficit in the pathophysiology of ICH and highlight TrkB/Akt as possible therapeutic targets in this disease.
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Affiliation(s)
- Chun-Hu Wu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Chien-Cheng Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, 45 Cheng Hsin Street, Taipei, Taiwan, Republic of China.,Graduate Institute of Gerontology and Health Care Management, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital at Taipei and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yen-Chieh Chuang
- Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan
| | - Min Chao
- School of Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Song-Kun Shyue
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan. .,Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei, Taiwan, Republic of China.
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, 45 Cheng Hsin Street, Taipei, Taiwan, Republic of China. .,Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan.
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Wu CP, Lusvarghi S, Wang JC, Hsiao SH, Huang YH, Hung TH, Ambudkar SV. Avapritinib: A Selective Inhibitor of KIT and PDGFRα that Reverses ABCB1 and ABCG2-Mediated Multidrug Resistance in Cancer Cell Lines. Mol Pharm 2019; 16:3040-3052. [PMID: 31117741 DOI: 10.1021/acs.molpharmaceut.9b00274] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The frequent occurrence of multidrug resistance (MDR) conferred by the overexpression of ATP-binding cassette (ABC) transporters ABCB1 and ABCG2 in cancer cells remains a therapeutic obstacle for scientists and clinicians. Consequently, developing or identifying modulators of ABCB1 and ABCG2 that are suitable for clinical practice is of great importance. Therefore, we have explored the drug repositioning approach to identify candidate modulators of ABCB1 and ABCG2 from tyrosine kinase inhibitors with known pharmacological properties and anticancer activities. In this study, we discovered that avapritinib (BLU-285), a potent, selective, and orally bioavailable tyrosine kinase inhibitor against mutant forms of KIT and platelet-derived growth factor receptor alpha (PDGFRA), attenuates the transport function of both ABCB1 and ABCG2. Moreover, avapritinib restores the chemosensitivity of ABCB1- and ABCG2-overexpressing MDR cancer cells at nontoxic concentrations. These findings were further supported by results of apoptosis induction assays, ATP hydrolysis assays, and docking of avapritinib in the drug-binding pockets of ABCB1 and ABCG2. Altogether, our study highlights an additional action of avapritinib on ABC drug transporters, and a combination of avapritinib with conventional chemotherapy should be further investigated in patients with MDR tumors.
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Affiliation(s)
- Chung-Pu Wu
- Department of Obstetrics and Gynecology , Taipei Chang Gung Memorial Hospital , Taipei 105 , Taiwan
| | - Sabrina Lusvarghi
- Laboratory of Cell Biology, Center for Cancer Research , National Cancer Institute , Bethesda , Maryland 20892 , United States
| | | | | | | | - Tai-Ho Hung
- Department of Obstetrics and Gynecology , Taipei Chang Gung Memorial Hospital , Taipei 105 , Taiwan
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research , National Cancer Institute , Bethesda , Maryland 20892 , United States
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Chen YT, Chen SF, Hsieh TT, Lo LM, Hung TH. A comparison of the efficacy of carbetocin and oxytocin on hemorrhage-related changes in women with cesarean deliveries for different indications. Taiwan J Obstet Gynecol 2019; 57:677-682. [PMID: 30342650 DOI: 10.1016/j.tjog.2018.08.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2018] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE To compare the efficacy of carbetocin and oxytocin on hemorrhage-related changes in women with cesarean deliveries (CS) for different indications. MATERIALS AND METHODS A retrospective cohort study was conducted on 1568 women with CS before labor onset (elective CS, n = 1153) or during labor (intrapartum CS, n = 415) after 24 weeks' gestation. We compared the fall in hemoglobin (Hb) and hematocrit (Hct) levels after CS, estimated blood loss, the need for additional uterotonic agents, blood transfusion, and the rate of postpartum hemorrhage between women with carbetocin and women with oxytocin treatment, stratified by indications for CS. RESULTS For women with elective CS, decreased Hb and Hct falls were noted with carbetocin treatment compared to oxytocin treatment in women with indications for prior CS, fetal malpresentation, and multiple gestation. The need for additional uterotonics was less in CS for prior CS, fetal malpresentation, and cephalopelvic disproportion and fewer transfusions in CS for multiple gestation in women with carbetocin compared to women with oxytocin treatment. For women with intrapartum CS, carbetocin was associated with decreased use of additional uterotonic agents and transfusion in CS for dysfunctional labor. CONCLUSION Carbetocin and oxytocin had differential effects on hemorrhage-related changes in women with CS for different indications.
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Affiliation(s)
- Yen-Tin Chen
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin Rehabilitation Medical Center, Taipei, Taiwan
| | - T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Liang-Ming Lo
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; School of Medicine, Chang Gung University, Taoyuan, Taiwan.
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Hsiao SH, Murakami M, Yeh N, Li YQ, Hung TH, Wu YS, Ambudkar SV, Wu CP. The positive inotropic agent DPI-201106 selectively reverses ABCB1-mediated multidrug resistance in cancer cell lines. Cancer Lett 2018; 434:81-90. [PMID: 30031116 DOI: 10.1016/j.canlet.2018.07.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/13/2018] [Accepted: 07/13/2018] [Indexed: 02/07/2023]
Abstract
The overexpression of ABCB1 in cancer cells is a major factor contributing to the development of multidrug resistance (MDR) and treatment failure in cancer patients. Therefore, re-sensitization of MDR cancer cells to anticancer drugs remains an important aspect in chemotherapy. The progress in developing clinically applicable synthetic inhibitors of ABCB1 has been slow, mostly due to complications associated with intrinsic toxicities and unforeseen drug-drug interactions. Here, we explored the drug-repositioning approach for cancer therapy by targeting ABCB1-mediated MDR in human cancer cells. We found that DPI-201106, a positive inotropic agent, selectively inhibits the drug efflux function of ABCB1, and in doing so, re-sensitizes ABCB1-overexpressing MDR cancer cells to conventional anticancer drugs. Furthermore, the ATPase activity of ABCB1 and docking analysis of DPI-201106 in the drug-binding pocket of ABCB1 were determined to confirm the interaction between DPI-201106 and ABCB1 protein. In summary, we revealed an additional action and a potential clinical application of DPI-201106 to reverse ABCB1-mediated MDR in human cancer cells, which may be beneficial for cancer patients who have developed multidrug resistance and no longer respond to conventional chemotherapy, and should be further investigated.
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Affiliation(s)
- Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.
| | - Megumi Murakami
- Laboratory of Cell Biology, CCR, NCI, NIH, Bethesda, United States.
| | - Ni Yeh
- Department of Chemistry, Tunghai University, Taichung, Taiwan.
| | - Yan-Qing Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.
| | - Tai-Ho Hung
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung, Taiwan.
| | | | - Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, Taiwan.
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Wu CP, Murakami M, Hsiao SH, Liu TC, Yeh N, Li YQ, Hung TH, Wu YS, Ambudkar SV. SIS3, a specific inhibitor of Smad3 reverses ABCB1- and ABCG2-mediated multidrug resistance in cancer cell lines. Cancer Lett 2018; 433:259-272. [PMID: 30026175 DOI: 10.1016/j.canlet.2018.07.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 06/29/2018] [Accepted: 07/03/2018] [Indexed: 01/05/2023]
Abstract
One of the major challenges in cancer chemotherapy is the development of multidrug resistance phenomenon attributed to the overexpression of ATP-binding cassette (ABC) transporter ABCB1 or ABCG2 in cancer cells. Therefore, re-sensitizing MDR cancer cells to chemotherapy by directly inhibiting the activity of ABC transporters has clinical relevance. Unfortunately, previous attempts of developing clinically applicable synthetic inhibitors have failed, mostly due to problems associated with toxicity and unforeseen drug-drug interactions. An alternative approach is by repositioning drugs with known pharmacological properties as modulators of ABCB1 and ABCG2. In this study, we discovered that the transport function of ABCB1 and ABCG2 is strongly inhibited by SIS3, a specific inhibitor of Smad3. More importantly, SIS3 enhances drug-induced apoptosis and resensitizes ABCB1- and ABCG2-overexpressing cancer cells to chemotherapeutic drugs at non-toxic concentrations. These findings are further supported by ATPase assays and by a docking analysis of SIS3 in the drug-binding pockets of ABCB1 and ABCG2. In summary, we revealed an additional action of SIS3 that re-sensitizes MDR cancer cells and a combination therapy with this drug and other chemotherapeutic agents may be beneficial for patients with MDR tumors.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, Taiwan.
| | - Megumi Murakami
- Laboratory of Cell Biology, CCR, NCI, NIH, Bethesda, United States.
| | - Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.
| | - Te-Chun Liu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.
| | - Ni Yeh
- Department of Chemistry, Tunghai University, Taichung, Taiwan.
| | - Yan-Qing Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.
| | - Tai-Ho Hung
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan; Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan.
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University, Taichung, Taiwan.
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Wu CH, Shyue SK, Hung TH, Wen S, Lin CC, Chang CF, Chen SF. Genetic deletion or pharmacological inhibition of soluble epoxide hydrolase reduces brain damage and attenuates neuroinflammation after intracerebral hemorrhage. J Neuroinflammation 2017; 14:230. [PMID: 29178914 PMCID: PMC5702198 DOI: 10.1186/s12974-017-1005-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 11/15/2017] [Indexed: 12/23/2022] Open
Abstract
Background Inflammatory responses significantly contribute to neuronal damage and poor functional outcomes following intracerebral hemorrhage (ICH). Soluble epoxide hydrolase (sEH) is known to induce neuroinflammatory responses via degradation of anti-inflammatory epoxyeicosatrienoic acids (EET), and sEH is upregulated in response to brain injury. The present study investigated the involvement of sEH in ICH-induced neuroinflammation, brain damage, and functional deficits using a mouse ICH model and microglial cultures. Methods ICH was induced by injecting collagenase in both wild-type (WT) C57BL/6 mice and sEH knockout (KO) mice. WT mice were injected intracerebroventricularly with 12-(3-adamantan-1-yl-ureido)-dodecanoic acid (AUDA), a selective sEH inhibitor, 30 min before ICH. Expression of sEH in the hemorrhagic hemisphere was examined by immunofluorescence and Western blot analysis. The effects of genetic deletion or pharmacological inhibition of sEH by AUDA on neuroinflammatory responses, EET degradation, blood-brain barrier (BBB) permeability, histological damage, and functional deficits were evaluated. The anti-inflammatory mechanism of sEH inactivation was investigated in thrombin- or hemin-stimulated cultured microglia. Results ICH induced an increase in sEH protein levels in the hemorrhagic hemisphere from 3 h to 4 days. sEH was expressed in microglia/macrophages, astrocytes, neurons, and endothelial cells in the perihematomal region. Genetic deletion of sEH significantly attenuated microglia/macrophage activation and expression of inflammatory mediators and reduced EET degradation at 1 and 4 days post-ICH. Deletion of sEH also reduced BBB permeability, matrix metalloproteinase (MMP)-9 activity, neutrophil infiltration, and neuronal damage at 1 and 4 days. Likewise, administration of AUDA attenuated proinflammatory microglia/macrophage activation and EET degradation at 1 day post-ICH. These findings were associated with a reduction in functional deficits and brain damage for up to 28 days. AUDA also ameliorated neuronal death, BBB disruption, MMP-9 activity, and neutrophil infiltration at 1 day. However, neither gene deletion nor pharmacological inhibition of sEH altered the hemorrhage volume following ICH. In primary microglial cultures, genetic deletion or pharmacological inhibition of sEH by AUDA reduced thrombin- and hemin-induced microglial activation. Furthermore, AUDA reduced thrombin- and hemin-induced P38 MAPK and NF-κB activation in BV2 microglia cultures. Ultimately, AUDA attenuated N2A neuronal death that was induced by BV2 microglial conditioned media. Conclusions Our results suggest that inhibition of sEH may provide a potential therapy for ICH by suppressing microglia/macrophage-mediated neuroinflammation. Electronic supplementary material The online version of this article (10.1186/s12974-017-1005-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chun-Hu Wu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Song-Kun Shyue
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Republic of China
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, Taiwan, Republic of China.,College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Shin Wen
- Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Chao-Chang Lin
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, 45 Cheng Hsin Street, Taipei, Taiwan, Republic of China
| | - Che-Feng Chang
- Department of Neurology, Yale University School of Medicine, New Haven, CT, USA
| | - Szu-Fu Chen
- Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China. .,Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, 45 Cheng Hsin Street, Taipei, Taiwan, Republic of China.
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Hung TH, Hsieh TT, Wu CP, Li MJ, Yeh YL, Chen SF. Mammalian target of rapamycin signaling is a mechanistic link between increased endoplasmic reticulum stress and autophagy in the placentas of pregnancies complicated by growth restriction. Placenta 2017; 60:9-20. [PMID: 29208245 DOI: 10.1016/j.placenta.2017.10.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 10/01/2017] [Accepted: 10/06/2017] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Increased endoplasmic reticulum (ER) stress and autophagy have been noted in the placentas of pregnancies complicated by idiopathic intrauterine growth restriction (IUGR); however, the cause of these phenomena remains unclear. We surmised that oxygen-glucose deprivation (OGD) may increase ER stress and autophagy and that mammalian target of rapamycin (mTOR) signaling is involved in regulating placental ER stress and autophagy in pregnancies complicated by IUGR. METHODS We obtained placentas from women with normal term pregnancies and pregnancies complicated by IUGR to compare ER stress, mTOR signaling, and levels of autophagy-related proteins between the two groups and used primary cytotrophoblast cells treated with or without salubrinal (an ER stress inhibitor), MHY1485 (an mTOR activator), or rapamycin (an mTOR inhibitor) to investigate the effects of OGD on ER stress, mTOR activity, and autophagy levels in vitro. RESULTS Women with pregnancies complicated by IUGR displayed higher placental ER stress and autophagy levels but lower mTOR activity than women with normal pregnancies. Furthermore, OGD increased ER stress, regulated in development and DNA damage responses-1 (REDD1), phosphorylated tuberous sclerosis complex 2 (TSC2), and autophagy levels and decreased mTOR activity compared to the standard culture condition; however, the salubrinal treatment attenuated these changes. Moreover, the administration of MHY1485 or rapamycin to OGD-treated cells decreased or increased autophagy levels, respectively. DISCUSSION Based on our results, mTOR is a mechanistic link between OGD-induced ER stress and autophagy in cytotrophoblast cells; thus, mTOR plays an essential role in the pathogenesis of pregnancies complicated by IUGR.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, Department of Physiology and Pharmacology and Molecular Medicine Research Center, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Meng-Jen Li
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Yi-Lin Yeh
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan
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Hung TH, Shyue SK, Wu CH, Chen CC, Lin CC, Chang CF, Chen SF. Deletion or inhibition of soluble epoxide hydrolase protects against brain damage and reduces microglia-mediated neuroinflammation in traumatic brain injury. Oncotarget 2017; 8:103236-103260. [PMID: 29262558 PMCID: PMC5732724 DOI: 10.18632/oncotarget.21139] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 08/17/2017] [Indexed: 11/25/2022] Open
Abstract
Traumatic brain injury (TBI) induces a series of inflammatory processes that contribute to neuronal damage. The present study investigated the involvement of soluble epoxide hydrolase (sEH) in neuroinflammation and brain damage in mouse TBI and in microglial cultures. The effects of genetic deletion of sEH and treatment with an sEH inhibitor, 12-(3-adamantan-1-yl-ureido)-dodecanoic acid (AUDA), on brain damage and inflammatory responses were evaluated in mice subjected to controlled cortical impact. The anti-inflammatory mechanism of sEH inhibition/deletion was investigated in vitro. TBI-induced an increase in sEH protein level in the injured cortex from 1 h to 4 days and sEH was expressed in microglia. Genetic deletion of sEH significantly attenuated functional deficits and brain damage up to 28 days post-TBI. Deletion of sEH also reduced neuronal death, apoptosis, brain edema, and BBB permeability at 1 and 4 day(s). These changes were associated with markedly reduced microglial/macrophage activation, neutrophil infiltration, matrix metalloproteinase-9 activity, inflammatory mediator expression at 1 and 4 day(s), and epoxyeicosatrienoic acid (EET) degradation at 1 and 4 day(s). Administration of AUDA attenuated brain edema, apoptosis, inflammatory mediator upregulation and EET degradation at 4 days. In primary microglial cultures, AUDA attenuated both LPS- or IFN-γ-stimulated nitric oxide (NO) production and reduced LPS- or IFN-γ-induced p38 MAPK and NF-κB signaling. Deletion of sEH also reduced IFN-γ-induced NO production. Moreover, AUDA attenuated N2A neuronal death induced by BV2 microglial-conditioned media. Our results suggest that inhibition of sEH may be a potential therapy for TBI by modulating the cytotoxic functions of microglia.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital at Taipei and College of Medicine, Chang Gung University, Taoyuan, Taiwan, Republic of China
| | - Song-Kun Shyue
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, Republic of China
| | - Chun-Hu Wu
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Chien-Cheng Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
| | - Chao-Chang Lin
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
| | - Che-Feng Chang
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China.,Departments of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China
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Hung TH, Hsieh TT, Chen SF. Risk of abnormal fetal growth in women with early- and late-onset preeclampsia. Pregnancy Hypertens 2017; 12:201-206. [PMID: 29104027 DOI: 10.1016/j.preghy.2017.09.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 08/28/2017] [Accepted: 09/10/2017] [Indexed: 11/20/2022]
Abstract
OBJECTIVES To investigate the risks of delivering small-for-gestational-age (SGA) and large-for-gestational-age (LGA) infants in women with early- (delivered before 34weeks of gestation) and late-onset (delivered at or after 34weeks of gestation) preeclampsia. STUDY DESIGN We conducted a retrospective cohort study of 29,494 singleton deliveries after 24weeks' gestation, excluding pregnancies complicated by fetal anomalies, stillbirths, and prepregnancy diabetes mellitus. Univariate and multivariate logistic analyses adjusted for potential confounding factors, including prepregnancy body mass index (BMI), gestational weight gain (GWG), and gestational diabetes mellitus (GDM), were performed. RESULTS Among women who delivered before 34weeks, significantly more women with preeclampsia delivered SGA infants than women without preeclampsia (50.6% vs. 7.0%; adjusted odds ratio [OR] 16.3; 95% confidence interval [CI] 8.1-32.9). Among women who delivered at or after 34weeks, women with preeclampsia had higher rates of delivering SGA (25.5% vs. 7.0%) and LGA (13.7% vs. 9.9%) infants than women without preeclampsia. After adjustment for confounding factors, preeclampsia remained a significant risk factor for delivering SGA infants (adjusted OR 5.7; 95% CI 4.6-7.1), but the association between preeclampsia and the delivery of LGA infants was diminished (adjusted OR 0.8; 95% CI 0.6-1.1). CONCLUSIONS Our results confirm that preeclampsia is associated with SGA and that the association is stronger with early-onset disease. Although women with late-onset preeclampsia had a higher rate of delivering LGA infants, the association between late-onset preeclampsia and LGA is due to confounding factors, such as high prepregnancy BMI, excessive GWG, and GDM, related to maternal metabolic abnormalities.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Szu-Fu Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin Rehabilitation Medical Center, Taipei, Taiwan
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Hung TH, Chen SF, Wu CP, Li MJ, Yeh YL, Hsieh TT. Micronized progesterone pretreatment affects the inflammatory response of human gestational tissues and the cervix to lipopolysaccharide stimulation. Placenta 2017; 57:1-8. [DOI: 10.1016/j.placenta.2017.05.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 05/16/2017] [Accepted: 05/17/2017] [Indexed: 12/30/2022]
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Hung TH, Huang TX, Hsieh TT. Ex utero intrapartum treatment for extremely low birth-weight neonates requiring resuscitation at birth. Taiwan J Obstet Gynecol 2017; 56:561-563. [PMID: 28805620 DOI: 10.1016/j.tjog.2017.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2017] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVE Difficulties often encountered during intubation in extremely low birth-weight (ELBW) neonates requiring resuscitation at birth because of the smaller airway and the pressure from the limited number of attempts before hemodynamic instability occurs. CASE REPORT We evaluated two pregnant women at 26 weeks of gestation with premature rupture of membranes and evidence of chorioamnionitis and applied the concept of ex utero intrapartum treatment, which involved delaying cord clamping (DCC) after establishing a secured airway with adequate ventilation during cesarean delivery. The resuscitative procedure was smooth and all three neonates had favorable outcomes at one month of age. CONCLUSION When cesarean delivery is indicated in ELBW infants and intubation after birth is anticipated, DCC after establishing a secured airway may help maintain neonatal cardiovascular stability and allow physicians to resolve the technical difficulties of intubation.
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Affiliation(s)
- Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; Department of Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Ting-Xuan Huang
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
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Wu CP, Hsiao SH, Murakami M, Lu YJ, Li YQ, Huang YH, Hung TH, Ambudkar SV, Wu YS. Alpha-Mangostin Reverses Multidrug Resistance by Attenuating the Function of the Multidrug Resistance-Linked ABCG2 Transporter. Mol Pharm 2017. [PMID: 28641010 DOI: 10.1021/acs.molpharmaceut.7b00334] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The ATP-binding cassette (ABC) drug transporter ABCG2 can actively efflux a wide variety of chemotherapeutic agents out of cancer cells and subsequently reduce the intracellular accumulation of these drugs. Therefore, the overexpression of ABCG2 often contributes to the development of multidrug resistance (MDR) in cancer cells, which is one of the major obstacles to successful cancer chemotherapy. Moreover, ABCG2 is highly expressed in various tissues including the intestine and blood-brain barrier (BBB), limiting the absorption and bioavailability of many therapeutic agents. For decades, the task of developing a highly effective synthetic inhibitor of ABCG2 has been hindered mostly by the intrinsic toxicity, the lack of specificity, and complex pharmacokinetics. Alternatively, considering the wide range of diversity and relatively nontoxic nature of natural products, developing potential modulators of ABCG2 from natural sources is particularly valuable. α-Mangostin is a natural xanthone derived from the pericarps of mangosteen (Garcinia mangostana L.) with various pharmacological purposes, including suppressing angiogenesis and inducing cancer cell growth arrest. In this study, we demonstrated that at nontoxic concentrations, α-mangostin effectively and selectively inhibits ABCG2-mediated drug transport and reverses MDR in ABCG2-overexpressing MDR cancer cells. Direct interactions between α-mangostin and the ABCG2 drug-binding site(s) were confirmed by stimulation of ATPase activity and by inhibition of photolabeling of the substrate-binding site(s) of ABCG2 with [125I]iodoarylazidoprazosin. In summary, our findings show that α-mangostin has great potential to be further developed into a promising modulator of ABCG2 for reversing MDR and for its use in combination therapy for patients with MDR tumors.
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Affiliation(s)
- Chung-Pu Wu
- Department of Neurosurgery, Chang Gung Memorial Hospital , Tao-Yuan 333, Taiwan
| | | | - Megumi Murakami
- Laboratory of Cell Biology, CCR, NCI, NIH , Bethesda, Maryland 20850, United States
| | - Yu-Jen Lu
- Department of Neurosurgery, Chang Gung Memorial Hospital , Tao-Yuan 333, Taiwan
| | | | - Yang-Hui Huang
- Department of Neurosurgery, Chang Gung Memorial Hospital , Tao-Yuan 333, Taiwan
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital , Taipei 105, Taiwan
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, CCR, NCI, NIH , Bethesda, Maryland 20850, United States
| | - Yu-Shan Wu
- Department of Chemistry, Tunghai University , Taichung 407, Taiwan
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Wu CP, Murakami M, Hsiao SH, Chou AW, Li YQ, Huang YH, Hung TH, Ambudkar SV. Overexpression of ATP-Binding Cassette Subfamily G Member 2 Confers Resistance to Phosphatidylinositol 3-Kinase Inhibitor PF-4989216 in Cancer Cells. Mol Pharm 2017; 14:2368-2377. [PMID: 28597653 DOI: 10.1021/acs.molpharmaceut.7b00277] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Deregulated activation of phosphoinositide 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathway is frequently found in human cancers, which plays a key role in promoting cancer proliferation and resistance to anticancer therapies. Therefore, developing inhibitors targeting key components of the PI3K/Akt/mTOR signaling pathway has great clinical significance. PF-4989216 is a novel, orally available small-molecule drug that was developed to selectively inhibit the PI3K/Akt/mTOR signaling pathway and subsequent cancer cell proliferation. PF-4989216 exhibited potent and selective inhibition against PI3K kinase activity in preclinical small-cell lung cancer (SCLC) models, and was especially effective against the proliferation of SCLCs harboring PIK3CA mutation. Unfortunately, in addition to innate resistance mechanisms, drug extrusion by the efflux pumps may also contribute to the development of acquired resistance to PI3K inhibitors in cancer cells. The overexpression of ATP-binding cassette (ABC) drug transporters ABCB1 and ABCG2 is one of the most common mechanisms for reducing intracellular drug concentration and developing multidrug resistance, which remains a substantial challenge to the effective treatment of cancer. In this study, we report the discovery of ABCG2 overexpression as a mechanism of resistance to PI3K inhibitor PF-4989216 in human cancer cells. We demonstrated that the inhibition of Akt and downstream S6RP phosphorylation by PF-4989216 were significantly reduced in ABCG2-overexpressing human cancer cells. Moreover, overexpression of ABCG2 in various cancer cell lines confers significant resistance to PF-4989216, which can be reversed by an inhibitor or competitive substrate of ABCG2, indicating that ABCG2-mediated transport alone can sufficiently reduce the intracellular concentration of PF-4989216.
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Affiliation(s)
- Chung-Pu Wu
- Department of Neurosurgery, Chang Gung Memorial Hospital , Tao-Yuan 105, Taiwan
| | - Megumi Murakami
- Laboratory of Cell Biology, CCR, NCI, NIH , Bethesda, Maryland 20892, United States
| | | | | | - Yan-Qing Li
- Department of Neurosurgery, Chang Gung Memorial Hospital , Tao-Yuan 105, Taiwan
| | | | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital , Taipei 105, Taiwan
| | - Suresh V Ambudkar
- Laboratory of Cell Biology, CCR, NCI, NIH , Bethesda, Maryland 20892, United States
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Hsieh TT, Chen SF, Shau WY, Hsieh CC, Hsu JJ, Hung TH. The Impact of Interpregnancy Interval and Previous Preterm Birth on the Subsequent Risk of Preterm Birth. ACTA ACUST UNITED AC 2016; 12:202-7. [PMID: 15784507 DOI: 10.1016/j.jsgi.2004.12.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To examine the impact of the interpregnancy interval and a previous preterm birth on the subsequent risk of a preterm birth. METHODS A retrospective analysis was conducted on a group of 4072 women who had at least two consecutive births, excluding multiple gestation, fetal anomalies, cervical incompetence, and stillbirth. Multivariate logistic regression was used to investigate the association between interpregnancy interval, preterm birth of the first child in the pair (index pregnancy), and the risk of a preterm birth of the second child in the pair (outcome pregnancy). RESULTS Women with interpregnancy intervals of less than 12 months (odds ratio [OR] 1.3; 95% confidence interval [CI] 1.0-1.7) were at increased risks of preterm birth with the outcome pregnancy. Furthermore, there was an increased risk for a subsequent preterm birth in women who had a preterm birth in the index pregnancy (OR 4.2; 95% CI 3.0-6.0). The risk decreased as the interpregnancy interval increased, with a relatively low risk at 18 to 48 months; subsequently, it increased sharply. In contrast, women who had delivered their previous infants at term carried an increased risk of preterm birth with the outcome pregnancy only if the interval was less than 6 months. CONCLUSION A difference was found in the impact of the interpregnancy interval on the subsequent risk of preterm birth between women with a prior preterm birth and those who previously delivered an infant at term.
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Affiliation(s)
- T'sang-T'ang Hsieh
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Taipei, Taiwan
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Hsiao SH, Lu YJ, Yang CC, Tuo WC, Li YQ, Huang YH, Hsieh CH, Hung TH, Wu CP. Hernandezine, a Bisbenzylisoquinoline Alkaloid with Selective Inhibitory Activity against Multidrug-Resistance-Linked ATP-Binding Cassette Drug Transporter ABCB1. J Nat Prod 2016; 79:2135-2142. [PMID: 27504669 DOI: 10.1021/acs.jnatprod.6b00597] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The overexpression of ATP-binding cassette (ABC) drug transporter ABCB1 (P-glycoprotein, MDR1) is the most studied mechanism of multidrug resistance (MDR), which remains a major obstacle in clinical cancer chemotherapy. Consequently, resensitizing MDR cancer cells by inhibiting the efflux function of ABCB1 has been considered as a potential strategy to overcome ABCB1-mediated MDR in cancer patients. However, the task of developing a suitable modulator of ABCB1 has been hindered mostly by the lack of selectivity and high intrinsic toxicity of candidate compounds. Considering the wide range of diversity and relatively nontoxic nature of natural products, developing a potential modulator of ABCB1 from natural sources is particularly valuable. Through screening of a large collection of purified bioactive natural products, hernandezine was identified as a potent and selective reversing agent for ABCB1-mediated MDR in cancer cells. Experimental data demonstrated that the bisbenzylisoquinoline alkaloid hernandezine is selective for ABCB1, effectively inhibits the transport function of ABCB1, and enhances drug-induced apoptosis in cancer cells. More importantly, hernandezine significantly resensitizes ABCB1-overexpressing cancer cells to multiple chemotherapeutic drugs at nontoxic, nanomolar concentrations. Collectively, these findings reveal that hernandezine has great potential to be further developed into a novel reversal agent for combination therapy in MDR cancer patients.
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Affiliation(s)
| | - Yu-Jen Lu
- Department of Neurosurgery, Chang Gung Memorial Hospital , Tao-Yuan, Taiwan
| | | | | | | | | | | | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital , Taipei, Taiwan
| | - Chung-Pu Wu
- Department of Neurosurgery, Chang Gung Memorial Hospital , Tao-Yuan, Taiwan
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Hung TH, Hsieh TT. Pregestational body mass index, gestational weight gain, and risks for adverse pregnancy outcomes among Taiwanese women: A retrospective cohort study. Taiwan J Obstet Gynecol 2016; 55:575-81. [DOI: 10.1016/j.tjog.2016.06.016] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2016] [Indexed: 01/12/2023] Open
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Wu CH, Chen CC, Lai CY, Hung TH, Lin CC, Chao M, Chen SF. Treatment with TO901317, a synthetic liver X receptor agonist, reduces brain damage and attenuates neuroinflammation in experimental intracerebral hemorrhage. J Neuroinflammation 2016; 13:62. [PMID: 26968836 PMCID: PMC4788882 DOI: 10.1186/s12974-016-0524-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 03/03/2016] [Indexed: 11/10/2022] Open
Abstract
Background Intracerebral hemorrhage (ICH) induces a series of inflammatory processes that contribute to neuronal damage and neurological deterioration. Liver X receptors (LXRs) are nuclear receptors that negatively regulate transcriptional processes involved in inflammatory responses, but their role in the pathology following ICH remains unclear. The present study investigated the neuroprotective effects and anti-inflammatory actions of TO901317, a synthetic LXR agonist, in a model of collagenase-induced ICH and in microglial cultures. Methods Mice subjected to collagenase-induced ICH injury were injected with either TO901317 (30 mg/kg) or vehicle 10 min after ICH and subsequently daily for 2 days. Behavioral studies, histology analysis, and assessments of hematoma volumes, brain water content, and blood-brain barrier (BBB) permeability were performed. The protein expression of LXR-α, LXR-β, ATP binding cassette transporter-1 (ABCA-1), and inflammatory molecules was analyzed. The anti-inflammatory mechanism of TO901317 was investigated in cultured microglia that were stimulated with either lipopolysaccharide (LPS) or thrombin. Results ICH induced an increase in LXR-α protein levels in the hemorrhagic hemisphere at 6 h whereas LXR-β expression remained unaffected. Both LXR-α and LXR-β were expressed in neurons and microglia in the peri-ICH region and but rarely in astrocytes. TO901317 significantly attenuated functional deficits and brain damage up to 28 days post-ICH. TO901317 also reduced neuronal death, BBB disruption, and brain edema at day 4 post-ICH. These changes were associated with marked reductions in microglial activation, neutrophil infiltration, and expression levels of inflammatory mediators at 4 and 7 days. However, TO901317 had no effect on matrix metalloproteinase-9 activity. In BV2 microglial cultures, TO901317 attenuated LPS- and thrombin-stimulated nitric oxide production and reduced LPS-induced p38, JNK, MAPK, and nuclear factor-kappa B (NF-κB) signaling. Moreover, delaying administration of TO901317 to 3 h post-ICH reduced brain tissue damage and neuronal death. Conclusions Our results suggest that enhancing LXR activation may provide a potential therapy for ICH by modulating the cytotoxic functions of microglia. Electronic supplementary material The online version of this article (doi:10.1186/s12974-016-0524-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chun-Hu Wu
- Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China.,Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Chien-Cheng Chen
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
| | - Chai-You Lai
- Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China.,Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Tai-Ho Hung
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital at Taipei and College of Medicine, Chang Gung University, Taipei, Taiwan, Republic of China
| | - Chao-Chang Lin
- Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
| | - Min Chao
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Szu-Fu Chen
- Department of Physiology and Biophysics, National Defense Medical Center, Taipei, Taiwan, Republic of China. .,Department of Physical Medicine and Rehabilitation, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China.
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Hung TH, Chen SF, Hsu JJ, Hsieh TT. Gestational weight gain and risks for adverse perinatal outcomes: A retrospective cohort study based on the 2009 Institute of Medicine guidelines. Taiwan J Obstet Gynecol 2015; 54:421-5. [DOI: 10.1016/j.tjog.2015.06.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2015] [Indexed: 11/16/2022] Open
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