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Zhang N, Xu Y, Sun D, Li Y, Li H, Chen L. Chromene meroterpenoids from Rhododendron dauricum L. and their anti-inflammatory effects. PHYTOCHEMISTRY 2024; 225:114200. [PMID: 38936530 DOI: 10.1016/j.phytochem.2024.114200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 06/23/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
Rhododendron dauricum L. is a perennial herb belonging to the genus Rhododendron, commonly utilized in formulations for treating coughs and bronchitis, as well as in herbal teas for enhancing immunity and preventing tracheitis. In this study, fifteen previously undescribed chromene meroterpenoids (1a/1b-4a/4b, 5-8, 9b, 10a, 11b), along with twenty-one known compounds were isolated from the dried twigs and leaves of Rhododendron dauricum L. Of these, (-)-rhodonoid E (9b), (+)-confluentin (10a), and (-)-rubiginosin D (11b) were separated for the first time by chiral HPLC separation. The elucidation of their structures, including absolute configurations, was achieved through a combination of techniques such as NMR, HRESIMS, modified Mosher's method and quantum-chemical calculation of electronic circular dichroism (ECD) spectra. Seven pairs of enantiomers, compounds 1a/1b-4a/4b and 9a/9b-11a/11b, were initially obtained in a racemic manner and were further separated by chiral HPLC preparation. The biological assessment of these compounds against NO production was conducted in the LPS-induced RAW264.7 macrophage cells model. Compounds 9a, 9b, and 11a displayed inhibitory rates exceeding 80%, with IC50 values ranging from 8.69 ± 0.94 to 13.01 ± 1.11 μM. A preliminary examination of the structure-activity relationship (SAR) for these isolates indicated that chromene meroterpenoids with α, β-unsaturated ketone carbonyl and Δ12(13) double bond functionalities exhibited enhanced anti-inflammatory properties.
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Affiliation(s)
- Na Zhang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Yang Xu
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Dejuan Sun
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Yuxia Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Hua Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China; Institute of Structural Pharmacology & TCM Chemical Biology, Fujian Key Laboratory of Chinese Materia Medica, College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China.
| | - Lixia Chen
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China.
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Xue F, Yang C, Yun K, Jiang C, Cai R, Liang M, Wang Q, Bian W, Zhou H, Liu Z, Zhu L. RETRACTED ARTICLE: Reduced LINC00467 elevates microRNA-125a-3p to suppress cisplatin resistance in non-small cell lung cancer through inhibiting sirtuin 6 and inactivating the ERK1/2 signaling pathway. Cell Biol Toxicol 2023; 39:365. [PMID: 34458953 DOI: 10.1007/s10565-021-09637-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/13/2021] [Indexed: 12/12/2022]
Affiliation(s)
- Feng Xue
- Department of Oncology, Affiliated Hospital of Guilin Medical University, Guilin, 541001, Guangxi, China
| | - Chuan Yang
- Center of Endoscopy, Heilongjiang Provincial Hospital, Harbin Institute of Technology, Harbin, 150036, Heilongjiang, China
| | - Keli Yun
- Department of Pharmacology, Pharmacy School of Guilin Medical University, Guilin, 541004, Guangxi, China
| | - Cailing Jiang
- Department of Oncology, Affiliated Hospital of Guilin Medical University, Guilin, 541001, Guangxi, China
| | - Rui Cai
- Department of Radiotherapy, Affiliated Hospital of Guilin Medical University, No.15 Lequn Road, Guilin, 541001, Guangxi, China
| | - Ming Liang
- Emergency Center of Nangang Branch, Heilongjiang Provincial Hospital, Harbin Institute of Technonlogy, Harbin, 150036, Heilongjiang, China
| | - Quan Wang
- Department of Medical Imaging, Heilongjiang Provincial Hospital, Harbin Institute of Technonlogy, Harbin, 150036, Heilongjiang, China
| | - Weixin Bian
- Department of Oncology, Heilongjiang Provincial Hospital, Harbin Institute of Technonlogy, Harbin, 150036, Heilongjiang, China
| | - Hang Zhou
- Department of Medical Imaging, Heilongjiang Provincial Hospital, Harbin Institute of Technonlogy, Harbin, 150036, Heilongjiang, China
| | - Zhipeng Liu
- Department of Medical Imaging, Heilongjiang Provincial Hospital, Harbin Institute of Technonlogy, Harbin, 150036, Heilongjiang, China
| | - Lin Zhu
- Department of Radiotherapy, Affiliated Hospital of Guilin Medical University, No.15 Lequn Road, Guilin, 541001, Guangxi, China.
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Tackling the Future Pandemics: Broad-Spectrum Antiviral Agents (BSAAs) Based on A-Type Proanthocyanidins. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238353. [PMID: 36500445 PMCID: PMC9736452 DOI: 10.3390/molecules27238353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 11/19/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022]
Abstract
A-type proanthocyanidins (PAC-As) are plant-derived natural polyphenols that occur as oligomers or polymers of flavan-3-ol monomers, such as (+)-catechin and (-)-epicatechin, connected through an unusual double A linkage. PAC-As are present in leaves, seeds, flowers, bark, and fruits of many plants, and are thought to exert protective natural roles against microbial pathogens, insects, and herbivores. Consequently, when tested in isolation, PAC-As have shown several biological effects, through antioxidant, antibacterial, immunomodulatory, and antiviral activities. PAC-As have been observed in fact to inhibit replication of many different human viruses, and both enveloped and non-enveloped DNA and RNA viruses proved sensible to their inhibitory effect. Mechanistic studies revealed that PAC-As cause reduction of infectivity of viral particles they come in contact with, as a result of their propensity to interact with virion surface capsid proteins or envelope glycoproteins essential for viral attachment and entry. As viral infections and new virus outbreaks are a major public health concern, development of effective Broad-Spectrum Antiviral Agents (BSAAs) that can be rapidly deployable even against future emerging viruses is an urgent priority. This review summarizes the antiviral activities and mechanism of action of PAC-As, and their potential to be deployed as BSAAs against present and future viral infections.
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Song C, Shen T, Kim HG, Hu W, Cho JY. 20(S)-Protopanaxadiol from Panax ginseng Induces Apoptosis and Autophagy in Gastric Cancer Cells by Inhibiting Src. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2022; 51:205-221. [PMID: 36408728 DOI: 10.1142/s0192415x2350012x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
20(S)-protopanaxadiol (PPD), a metabolite of Panax ginseng, has multiple pharmacological properties. However, the effects of PPD against human gastric cancer have not been elucidated. Our purpose in this study was to investigate if PPD has anticancer effects against human gastric cancer in vitro. Cell viability, migration, clone formation, and invasion were assessed to explore the effects of PPD on cancer cells. PI and annexin V staining as well as immunoblotting were employed to determine if PPD-induced apoptosis and autophagy of MKN1 and MKN45 cells. The target of PPD was identified using immunoblotting, overexpression analysis, and flow cytometric analysis. PPD exhibited significantly suppressed cell viability, migration, colony formation, and invasion. Phosphorylation of Src and its down-stream effectors were inhibited by PPD. PPD-enhanced apoptosis and autophagy in a dose- and time-dependent manner by inhibiting Src. Collectively, our results demonstrate that PPD induces apoptosis and autophagy in gastric cancer cells in vitro by inhibiting Src.
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Affiliation(s)
- Chaoran Song
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Korea
| | - Ting Shen
- Jiangsu Collaborative Innovation Center of Regional, Modern Agriculture & Environmental Protection, Jiangsu Key Laboratory for Eco-Agricultural, Biotechnology Around Hongze Lake, Huaiyin Normal University, Huaian 223300, P. R. China
| | - Han Gyung Kim
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Korea
| | - Weicheng Hu
- Jiangsu Collaborative Innovation Center of Regional, Modern Agriculture & Environmental Protection, Jiangsu Key Laboratory for Eco-Agricultural, Biotechnology Around Hongze Lake, Huaiyin Normal University, Huaian 223300, P. R. China
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Korea
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Patel A, Rasheed A, Reilly I, Pareek Z, Hansen M, Haque Z, Simon-Fajardo D, Davies C, Tummala A, Reinhardt K, Bustabad A, Shaw M, Robins J, Vera Gomez K, Suphakorn T, Camacho Gemelgo M, Law A, Lin K, Hospedales E, Haley H, Perez Martinez JP, Khan S, DeCanio J, Padgett M, Abramov A, Nanjundan M. Modulation of Cytoskeleton, Protein Trafficking, and Signaling Pathways by Metabolites from Cucurbitaceae, Ericaceae, and Rosaceae Plant Families. Pharmaceuticals (Basel) 2022; 15:1380. [PMID: 36355554 PMCID: PMC9698530 DOI: 10.3390/ph15111380] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 10/22/2023] Open
Abstract
One promising frontier within the field of Medical Botany is the study of the bioactivity of plant metabolites on human health. Although plant metabolites are metabolic byproducts that commonly regulate ecological interactions and biochemical processes in plant species, such metabolites also elicit profound effects on the cellular processes of human and other mammalian cells. In this regard, due to their potential as therapeutic agents for a variety of human diseases and induction of toxic cellular responses, further research advances are direly needed to fully understand the molecular mechanisms induced by these agents. Herein, we focus our investigation on metabolites from the Cucurbitaceae, Ericaceae, and Rosaceae plant families, for which several plant species are found within the state of Florida in Hillsborough County. Specifically, we compare the molecular mechanisms by which metabolites and/or plant extracts from these plant families modulate the cytoskeleton, protein trafficking, and cell signaling to mediate functional outcomes, as well as a discussion of current gaps in knowledge. Our efforts to lay the molecular groundwork in this broad manner hold promise in supporting future research efforts in pharmacology and drug discovery.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Meera Nanjundan
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, USA
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Insights into the Mechanisms of Action of Proanthocyanidins and Anthocyanins in the Treatment of Nicotine-Induced Non-Small Cell Lung Cancer. Int J Mol Sci 2022; 23:ijms23147905. [PMID: 35887251 PMCID: PMC9316101 DOI: 10.3390/ijms23147905] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 02/04/2023] Open
Abstract
In traditional medicine, different parts of plants, including fruits, have been used for their anti-inflammatory and anti-oxidative properties. Plant-based foods, such as fruits, seeds and vegetables, are used for therapeutic purposes due to the presence of flavonoid compounds. Proanthocyanidins (PCs) and anthocyanins (ACNs) are the major distributed flavonoid pigments in plants, which have therapeutic potential against certain chronic diseases. PCs and ACNs derived from plant-based foods and/or medicinal plants at different nontoxic concentrations have shown anti-non-small cell lung cancer (NSCLC) activity in vitro/in vivo models through inhibiting proliferation, invasion/migration, metastasis and angiogenesis and by activating apoptosis/autophagy-related mechanisms. However, the potential mechanisms by which these compounds exert efficacy against nicotine-induced NSCLC are not fully understood. Thus, this review aims to gain insights into the mechanisms of action and therapeutic potential of PCs and ACNs in nicotine-induced NSCLC.
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Mudaliar P, Nalawade A, Devarajan S, Aich J. Therapeutic potential of autophagy activators and inhibitors in lung and breast cancer- a review. Mol Biol Rep 2022; 49:10783-10795. [PMID: 35829809 DOI: 10.1007/s11033-022-07711-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 05/22/2022] [Accepted: 06/15/2022] [Indexed: 11/26/2022]
Abstract
Autophagy is a cellular process that eliminates damaged components of cytoplasm via the lysosome. Autophagy supports cells and tissues to remain healthy by recycling old or damaged cellular organelles and proteins with new ones. The breakdown products that follow are directed into cellular metabolism, where they are utilized to produce energy as well as for maintaining homeostasis and stability of the genome. In many cancers, autophagy modulation carries out a dual role in cancer development and suppression. Autophagy suppresses the proliferation of cancer cells by bringing about cell death and limiting cancer cell development, although it also promotes tumorigenesis by encouraging cancer cell growth and formation. Nevertheless, autophagy's implication in cancer remains a paradox. While several autophagy activators, and inhibitors, such as SAH-EJ2, Gefitinib, Ampelopsin hydroxychloroquine and chloroquine, are utilized to regulate autophagy in chemoprevention, the exact intrinsic system of autophagy in cancer deserves further investigation. Despite improved treatment regimens, the incidence rate of both breast and lung cancer has grown, as has the number of recurrence cases. Hence, this review offers a wide overview of autophagy's underlying role in lung and breast cancer, particularly focusing on the various autophagy activators and inhibitors in both cancers, as well as the use of various organic compounds, regular drugs, and natural products in cancer prevention and treatment.
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Affiliation(s)
- Priyanka Mudaliar
- School of Biotechnology and Bioinformatics, DY Patil Deemed to Be University, CBD Belapur, 400614, Navi Mumbai, Maharashtra, India
| | - Apoorva Nalawade
- School of Biotechnology and Bioinformatics, DY Patil Deemed to Be University, CBD Belapur, 400614, Navi Mumbai, Maharashtra, India
| | - Shine Devarajan
- School of Biotechnology and Bioinformatics, DY Patil Deemed to Be University, CBD Belapur, 400614, Navi Mumbai, Maharashtra, India
| | - Jyotirmoi Aich
- School of Biotechnology and Bioinformatics, DY Patil Deemed to Be University, CBD Belapur, 400614, Navi Mumbai, Maharashtra, India.
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Huang HM, Ho CY, Chang GR, Shia WY, Lai CH, Chao CH, Wang CM. HPLC/ESI-MS and NMR Analysis of Chemical Constitutes in Bioactive Extract from the Root Nodule of Vaccinium emarginatum. Pharmaceuticals (Basel) 2021; 14:ph14111098. [PMID: 34832879 PMCID: PMC8622236 DOI: 10.3390/ph14111098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/27/2021] [Accepted: 10/27/2021] [Indexed: 12/20/2022] Open
Abstract
Vaccinium emarginatum Hayata is a medicinal plant that has been historically used in ethnopharmacy to treat diseases in Taiwan. The objective of this study is to evaluate the anti-cancer and anti-bacterial constitutes from the root nodule extract of V. emarginatum. The chemical composition of V. emarginatum fractions was analyzed by high-performance liquid chromatography-electrospray ionization tandem mass spectrometry (HPLC-ESI-MS/MS) and the chemical constitutes were isolated and structurally identified by nuclear magnetic resonance (NMR) spectroscopy. Bioassay-guided chromatography showed that the ethyl acetate (EA) fraction was bioactive on the hepatocellular carcinoma (HepG2). By LC-ESI-MS/MS analysis, twenty peaks of EA fraction were partially identified and the phytochemical investigation of the fractions led to the isolation and identification of protocatuchuic acid (1), epicatechin (2), catechin (3), procyanidin B3 (4), procyanidin A1 (5), hyperin (6), isoquercetin (7), quercetin (8), lupeol (9), beta-amyrin (10), and alpha-amyrin (11). Both procyanidin B3 and A1 exhibited anti-proliferative activity against HepG2 and gastric adenocarcinoma (AGS) cells at IC50 values between 38.4 and 41.1 μM and 79.4 and 83.8 μM, respectively. In addition, isoquercetin displayed the strongest anti-proliferative activity against the HepG2, lung carcinoma (A549), and AGS cell at 18.7, 24.6 and 68.5 μM, respectively. Among the triterpenoids, only lupeol showed the inhibitory activity against all tested tumor cell lines at IC50 values between 72.9 and 146.8 μM. Furthermore, procyanidins B3, A1 and isoquercetin displayed moderate anti-bacterial activity against Staphylococcus aureus. In conclusion, this study provides background information on the exploitation of V. emarginatum as a potential natural anti-cancer and anti-bacterial agent in pharmaceutical research.
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Affiliation(s)
- Hsiang-Ming Huang
- Neurosurgery Department, China Medical University Hsinchu Hospital, Hsinchu 302, Taiwan;
| | - Chien-Yi Ho
- Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung 404, Taiwan;
- Division of Family Medicine, Physical Examination Center, and Department of Medical Research, China Medical University Hsinchu Hospital, Hsinchu 302, Taiwan
| | - Geng-Ruei Chang
- Department of Veterinary Medicine, National Chiayi University, 580 Xinmin Road, Chiayi 600, Taiwan;
| | - Wei-Yau Shia
- Department of Veterinary Medicine, National Chung-Hsing University, 145 XingDa Road, Taichung 402, Taiwan; (W.-Y.S.); (C.-H.L.)
| | - Cheng-Hung Lai
- Department of Veterinary Medicine, National Chung-Hsing University, 145 XingDa Road, Taichung 402, Taiwan; (W.-Y.S.); (C.-H.L.)
| | - Chih-Hao Chao
- Division of Chest Medicine, Attending Physician of Chang Bing Show Chwan Memorial Hospital, 6 Lugong Road, Lukang Township, Changhua 505, Taiwan
- Correspondence: (C.-H.C.); (C.-M.W.); Tel.: +886-975-617918 (C.-H.C.); +886-5-2732970 (C.-M.W.)
| | - Chao-Min Wang
- Department of Veterinary Medicine, National Chiayi University, 580 Xinmin Road, Chiayi 600, Taiwan;
- Correspondence: (C.-H.C.); (C.-M.W.); Tel.: +886-975-617918 (C.-H.C.); +886-5-2732970 (C.-M.W.)
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Li H, Zheng T, Lian F, Xu T, Yin W, Jiang Y. Anthocyanin-rich blueberry extracts and anthocyanin metabolite protocatechuic acid promote autophagy-lysosomal pathway and alleviate neurons damage in in vivo and in vitro models of Alzheimer's disease. Nutrition 2021; 93:111473. [PMID: 34739938 DOI: 10.1016/j.nut.2021.111473] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/13/2021] [Accepted: 08/24/2021] [Indexed: 12/19/2022]
Abstract
OBJECTIVES As the global aging phenomenon intensifies, the incidence of Alzheimer's disease (AD) is gradually increasing. Diet appears to be an effective way to prevent and delay the progression of AD. Previous studies have found that cognitive impairment and neuronal damage were effectively alleviated by blueberry extract (BBE) in AD mice, but its mechanism is still unclear. The aims of this study were to detect the main anthocyanins of BBE; then to verify the protective effects of anthocyanin-rich BBE on hippocampal neurons and the promotion of autophagy; and finally to investigate the main protective effects and mechanisms of protocatechuic acid (PCA), a major metabolite of BBE, for promoting autophagy and thus playing a neuroprotective role. METHODS APP/PS1 mice were given 150 mg/kg BBE daily for 16 wk. Morphology of neurons was observed and autophagy-related proteins were detected. RESULTS Neuron damage in morphology was reduced and the expression of autophagy-related proteins in APP/PS1 mice were promoted after BBE treatment. In vitro, Aβ25-35-induced cytotoxicity, including decreased neuron viability and increased levels of lactate dehydrogenase and reactive oxygen species, was effectively reversed by PCA. Furthermore, by adding autophagy inducers rapamycin and autophagy inhibitors Bafilomycin A1, it was verified that degradation of autophagosomes was upregulated and autophagy was promoted by PCA. CONCLUSION This study elucidated the mechanism of BBE for reducing neuronal damage by promoting neuronal autophagy and proved PCA may be the main bioactive metabolite of BBE for neuroprotective effects, providing a basis for dietary intervention in AD.
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Affiliation(s)
- Hui Li
- Department of Nutrition and Food Hygiene, Institute of Environmental and Operational Medicine, Tianjin, PR China
| | - Tingting Zheng
- Department of Nutrition and Food Hygiene, Institute of Environmental and Operational Medicine, Tianjin, PR China; Department of Nutrition, Food Hygiene and Toxicology, West China School of Public Health, and Healthy Food Evaluation Research Center, Sichuan University, Sichuan, PR China
| | - Fuzhi Lian
- Department of Preventive Medicine, Hangzhou Normal University, Hangzhou, China
| | - Tong Xu
- Department of Nutrition and Food Hygiene, Institute of Environmental and Operational Medicine, Tianjin, PR China
| | - Wenya Yin
- Department of Nutrition, Food Hygiene and Toxicology, West China School of Public Health, and Healthy Food Evaluation Research Center, Sichuan University, Sichuan, PR China.
| | - Yugang Jiang
- Department of Nutrition and Food Hygiene, Institute of Environmental and Operational Medicine, Tianjin, PR China.
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Turan I, Demir S, Yaman SO, Canbolat D, Mentese A, Aliyazicioglu Y. An Investigation of the Antiproliferative Effect of Rhododendron luteum Extract on Cervical Cancer (HeLa) Cells via Nrf2 Signaling Pathway. Nutr Cancer 2021; 74:1882-1893. [PMID: 34323135 DOI: 10.1080/01635581.2021.1955287] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The aim of the present study was to investigate the role of Rhododendron luteum extract (RLE) in the induction of Nrf2‑related oxidative stress and endoplasmic reticulum (ER) stress in human cervical cancer (HeLa) cells. The antiproliferative effect of RLE on HeLa and fibroblast cells was determined using the MTT assay. The effects of RLE on the cell cycle, apoptosis, and production of reactive oxygen species (ROS) in HeLa cells were evaluated using fluorescent probes. The mRNA expression levels of Nrf2 [and its targets glutamate-cysteine ligase catalytic subunit (GCLC), and glucose-6-phosphate dehydrogenase (G6PD)], and C/EBP homologous protein (CHOP, an ER stress marker were determined using reverse transcription‑quantitative polymerase chain reaction (RT-PCR). The results demonstrated that RLE exhibited a selective cytotoxic effect (2.9-fold) on HeLa cells compared to fibroblast cells. RLE arrested the cell cycle at the S phase, and induced apoptosis, ER stress, and ROS formation. In addition, RLE significantly suppressed the expression levels of Nrf2, GCLC and G6PD (0.65, 0.69, and 0.54-fold, respectively) and increased the expression of CHOP (4.48-fold) in HeLa cells at 72 h of treatment (p < 0.05). These results show that the antiproliferative effect of RLE occurs through the Nrf2 and ER stress pathways, and the results should now be supported by further in vivo studies.
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Affiliation(s)
- Ibrahim Turan
- Department of Biochemistry, Faculty of Pharmacy, University of Health Sciences, Ankara, Turkey.,Department of Genetic and Bioengineering, Faculty of Engineering and Natural Sciences, Gumushane University, Gumushane, Turkey
| | - Selim Demir
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Karadeniz Technical University, Trabzon, Turkey
| | - Serap Ozer Yaman
- Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Deniz Canbolat
- Department of Biotechnology, Institute of Science, Gumushane University, Gumushane, Turkey
| | - Ahmet Mentese
- Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Yuksel Aliyazicioglu
- Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
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Wang XY, Zhu BR, Jia Q, Li YM, Wang T, Wang HY. Cinnamtannin D1 Protects Pancreatic β-Cells from Glucolipotoxicity-Induced Apoptosis by Enhancement of Autophagy In Vitro and In Vivo. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12617-12630. [PMID: 33125846 DOI: 10.1021/acs.jafc.0c04898] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In our previous study, cinnamtannin D1 (CD-1), one of the A-type procyanidin oligomers isolated from Cinnamomum tamala, was reported to have the activity of antiapoptosis in palmitic acid-treated pancreatic β cells via alleviating oxidative stress in vitro. In this study, the aim was to further disclose its protective effect and underlying mechanisms against glucolipotoxicity-induced β-cells apoptosis in vitro and in vivo. We found that CD-1 was able to dose-dependently and time-dependently activate autophagy in INS-1 pancreatic β-cells. High glucose and palmitic acid (HG/PA)-induced apoptosis and autophagy impairment could be attenuated by CD-1 in INS-1 cells as well as primary cultured murine islets. We also demonstrated that CD-1-induced autophagy was through AMPK/mTOR/ULK1 pathway. Moreover, it was shown that the effects of CD-1 on activation of Keap1/Nrf2 antioxidant signaling pathway and the amelioration of inflammation, endoplasmic reticulum stress, and apoptosis were through autophagy induction in HG/PA-treated INS-1 cells. These protective effects in vivo and hypoglycemic activity of CD-1 were also observed in diabetic db/db mice. These findings have great significance in revealing the antidiabetic mechanisms of procyanidin oligomers and paving the way for their application in the treatment of diabetes.
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Affiliation(s)
- Xin-Yi Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bo-Rong Zhu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Qi Jia
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yi-Ming Li
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Ting Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - He-Yao Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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12
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Neamtu AA, Szoke-Kovacs R, Mihok E, Georgescu C, Turcus V, Olah NK, Frum A, Tita O, Neamtu C, Szoke-Kovacs Z, Cziaky Z, Mathe E. Bilberry ( Vaccinium myrtillus L.) Extracts Comparative Analysis Regarding Their Phytonutrient Profiles, Antioxidant Capacity along with the In Vivo Rescue Effects Tested on a Drosophila melanogaster High-Sugar Diet Model. Antioxidants (Basel) 2020; 9:E1067. [PMID: 33143302 PMCID: PMC7694118 DOI: 10.3390/antiox9111067] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 12/26/2022] Open
Abstract
Bilberries (Vaccinium myrtillus L.) have been reported to hold a plentitude of health-promoting properties beyond basic nutrition, mainly attributed to their anthocyanin content and antioxidant activity. In this article, we built the phytochemical profile of three wild bilberry fruit extract formulations (aqueous, methanolic, and hydro-methanolic) using UHPLC-ESI-MS/MS putative analysis, identifying 88 individual phytochemicals, mainly flavonoids (total content 8.41 ± 0.11 mg QE/g dw), free amino acids, polyphenols (total content 21.68 ± 0.19 mg GAE/g dw), carboxylic acids, and vitamins. Furthermore, the antioxidant activity of the extract was assessed, reaching 78.03 ± 0.16% DPPH free radical scavenging activity, comparable to literature values determined for bilberry extracts of other origin. Due to the increased prevalence of metabolic syndrome and based on the reviewed benefits of bilberries, we tested the most potent formulation of our bilberry extracts in this biological context. The in vivo rescue effect of a bilberry extract supplemented diet on Drosophila melanogaster was assessed by monitoring biochemical and genomic markers. Hemolymph trehalose levels were halved upon addition of 3% hydro-methanolic bilberry extract to a high-sugar (1.5 M sucrose) diet, as compared to the non-supplemented high-sugar diet. Noteworthy, the rescue seen for flies kept on the bilberry extract supplemented high-sugar diet appeared to parallel the trehalose levels observed in the case of the control diet (50 mM sucrose) flies. Moreover, next to the trehalose-lowering type of in vivo effects, other gene expression related rescues were also detected for genes such as InR, Akh, AstA, AstC, Irk, Npc2g, and CCHa2 upon supplementation of the high-sugar diet with our hydro-methanolic bilberry fruit extract. Our findings suggest that such a bilberry fruit extract could generate physiological and genomic type of compensatory mechanisms so that further translational approaches would advance the understanding of some human specific pathological conditions.
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Affiliation(s)
| | - Rita Szoke-Kovacs
- Doctoral School of Molecular Cell Biology and Immunology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary;
| | - Emoke Mihok
- Doctoral School of Animal Science, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary;
| | - Cecilia Georgescu
- Faculty of Agricultural Science, Food Industry and Environmental Protection, “Lucian Blaga” University of Sibiu, 550012 Sibiu, Romania; (A.F.); (O.T.)
| | - Violeta Turcus
- Faculty of Medicine, “Vasile Goldis” Western University of Arad, 310045 Arad, Romania; (V.T.); (C.N.)
| | - Neli Kinga Olah
- Faculty of Pharmacy, “Vasile Goldis” Western University of Arad, 310045 Arad, Romania;
| | - Adina Frum
- Faculty of Agricultural Science, Food Industry and Environmental Protection, “Lucian Blaga” University of Sibiu, 550012 Sibiu, Romania; (A.F.); (O.T.)
| | - Ovidiu Tita
- Faculty of Agricultural Science, Food Industry and Environmental Protection, “Lucian Blaga” University of Sibiu, 550012 Sibiu, Romania; (A.F.); (O.T.)
| | - Carmen Neamtu
- Faculty of Medicine, “Vasile Goldis” Western University of Arad, 310045 Arad, Romania; (V.T.); (C.N.)
| | - Zsombor Szoke-Kovacs
- Doctoral School of Nutrition, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary;
| | - Zoltan Cziaky
- Agricultural and Molecular Research and Service Institute, University of Nyiregyhaza, H-4400 Nyíregyháza, Hungary;
| | - Endre Mathe
- Faculty of Medicine, “Vasile Goldis” Western University of Arad, 310045 Arad, Romania; (V.T.); (C.N.)
- Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary
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13
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Zhao Q, Peng C, Zheng C, He XH, Huang W, Han B. Recent Advances in Characterizing Natural Products that Regulate Autophagy. Anticancer Agents Med Chem 2020; 19:2177-2196. [PMID: 31749434 DOI: 10.2174/1871520619666191015104458] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 11/16/2018] [Accepted: 08/26/2019] [Indexed: 02/07/2023]
Abstract
Autophagy, an intricate response to nutrient deprivation, pathogen infection, Endoplasmic Reticulum (ER)-stress and drugs, is crucial for the homeostatic maintenance in living cells. This highly regulated, multistep process has been involved in several diseases including cardiovascular and neurodegenerative diseases, especially in cancer. It can function as either a promoter or a suppressor in cancer, which underlines the potential utility as a therapeutic target. In recent years, increasing evidence has suggested that many natural products could modulate autophagy through diverse signaling pathways, either inducing or inhibiting. In this review, we briefly introduce autophagy and systematically describe several classes of natural products that implicated autophagy modulation. These compounds are of great interest for their potential activity against many types of cancer, such as ovarian, breast, cervical, pancreatic, and so on, hoping to provide valuable information for the development of cancer treatments based on autophagy.
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Affiliation(s)
- Qian Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu 611137, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu 611137, China
| | - Chuan Zheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu 611137, China
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu 611137, China
| | - Wei Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu 611137, China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Chengdu 611137, China.,The RNA Institute, University at Albany, State University of New York, Albany, NY 12222, United States
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14
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Polyphenol-Mediated Autophagy in Cancer: Evidence of In Vitro and In Vivo Studies. Int J Mol Sci 2020; 21:ijms21186635. [PMID: 32927836 PMCID: PMC7555128 DOI: 10.3390/ijms21186635] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 02/06/2023] Open
Abstract
One of the hallmarks of cellular transformation is the altered mechanism of cell death. There are three main types of cell death, characterized by different morphological and biochemical features, namely apoptosis (type I), autophagic cell death (type II) and necrosis (type III). Autophagy, or self-eating, is a tightly regulated process involved in stress responses, and it is a lysosomal degradation process. The role of autophagy in cancer is controversial and has been associated with both the induction and the inhibition of tumor growth. Autophagy can exert tumor suppression through the degradation of oncogenic proteins, suppression of inflammation, chronic tissue damage and ultimately by preventing mutations and genetic instability. On the other hand, tumor cells activate autophagy for survival in cellular stress conditions. Thus, autophagy modulation could represent a promising therapeutic strategy for cancer. Several studies have shown that polyphenols, natural compounds found in foods and beverages of plant origin, can efficiently modulate autophagy in several types of cancer. In this review, we summarize the current knowledge on the effects of polyphenols on autophagy, highlighting the conceptual benefits or drawbacks and subtle cell-specific effects of polyphenols for envisioning future therapies employing polyphenols as chemoadjuvants.
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15
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Chen F, Wen X, Lin P, Chen H, Wang A, Jin Y. HERP depletion inhibits zearalenone-induced apoptosis through autophagy activation in mouse ovarian granulosa cells. Toxicol Lett 2018; 301:1-10. [PMID: 30394307 DOI: 10.1016/j.toxlet.2018.10.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/25/2018] [Accepted: 10/22/2018] [Indexed: 12/21/2022]
Abstract
HERP is an endoplasmic reticulum (ER) membrane protein and is strongly induced by stress conditions. A recent study has indicated that HERP cooperates in apoptosis during zearalenone (ZEA) treatment. However, regulatory mechanisms and the role of HERP in ZEA-induced apoptosis remain elusive in ovarian granulosa cells. In this study, MTT and flow cytometry assays demonstrated that ZEA gradually decreased cell viability and increased apoptosis in granulosa cells in a dose-dependent manner. Western blot analysis showed that ZEA significantly activated autophagy by upregulating LC3-II. Chloroquine (CQ) significantly increased LC3-II and induced granulosa cell apoptosis. Moreover, Western blot analysis showed that ZEA inhibited the mTOR and ERK1/2 signaling pathways. Furthermore, we found that ZEA activated ER stress by upregulating the ER stress-related proteins GRP78, HERP and CHOP. 4-PBA significantly decreased GRP78, HERP, CHOP and LC3-II. In addition, knockdown of HERP (shHERP) significantly protected ovarian granulosa cells from apoptosis induced by ZEA. We found that HERP depletion activated autophagy and ERK1/2 signaling pathways, while it inhibited the mTOR and caspase-dependent mitochondrial signaling pathways. In summary, autophagy and ER stress cooperated in apoptosis induced by ZEA; HERP depletion inhibits ZEA-induced apoptosis of ovarian granulosa cells through autophagy activation and apoptotic pathway inhibition.
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Affiliation(s)
- Fenglei Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, Jiangsu, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, Jiangsu, China
| | - Xin Wen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Pengfei Lin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Huatao Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Aihua Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yaping Jin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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16
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Alejo-Armijo A, Parola AJ, Pina F, Altarejos J, Salido S. Thermodynamic Stability of Flavylium Salts as a Valuable Tool To Design the Synthesis of A-Type Proanthocyanidin Analogues. J Org Chem 2018; 83:12297-12304. [DOI: 10.1021/acs.joc.8b01780] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alfonso Alejo-Armijo
- Departamento de Química Inorgánica y Orgánica, Facultad de Ciencias Experimentales, Universidad de Jaén, Campus de Excelencia Internacional Agroalimentario, ceiA3, 23071 Jaén, Spain
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - A. Jorge Parola
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Fernando Pina
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - Joaquín Altarejos
- Departamento de Química Inorgánica y Orgánica, Facultad de Ciencias Experimentales, Universidad de Jaén, Campus de Excelencia Internacional Agroalimentario, ceiA3, 23071 Jaén, Spain
| | - Sofía Salido
- Departamento de Química Inorgánica y Orgánica, Facultad de Ciencias Experimentales, Universidad de Jaén, Campus de Excelencia Internacional Agroalimentario, ceiA3, 23071 Jaén, Spain
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17
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Zeng Z, He S, Lu J, Liu C, Lin H, Xu C, Xie L, Sun S. MicroRNA-21 aggravates chronic obstructive pulmonary disease by promoting autophagy. Exp Lung Res 2018. [PMID: 29543496 DOI: 10.1080/01902148.2018.1439548] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
MicroRNAs and autophagy play important roles in chronic obstructive pulmonary disease (COPD). This study was designed to explore the role of microRNA-21 (miR-21) induced autophagy in COPD. Using the C57BL/6, miR-21-/- mice and human bronchial epithelial (16HBE) cell line, we found that in the lung tissues of mice, the level of autophagy in the COPD model group was significantly higher than that in the control group. However, compared to the COPD model, the level of autophagy was significantly lower in the miR-21-/- CSE+CS group. In the COPD model, miR-21 was overexpressed. Moreover, in human bronchial epithelial (16HBE) cells exposed to cigarette smoke extract (CSE), miR-21 expression was upregulated and autophagy was notably increased. In addition, pretreatment of 16HBE cells with miR-21 inhibitor significantly inhibited autophagy activity and decreased apoptosis, indicating that miR-21 is involved in CSE-induced autophagy and apoptosis. The results showed that miR-21 could increase autophagy and promote the apoptosis of 16HBE cells in COPD. This information contributes to our further understanding of COPD.
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Affiliation(s)
- Zhengpeng Zeng
- a Center for Experimental Medical Research , the Third Xiangya Hospital of Central South University , Changsha , Hunan , P.R. China
| | - ShengYang He
- a Center for Experimental Medical Research , the Third Xiangya Hospital of Central South University , Changsha , Hunan , P.R. China
| | - JunJuan Lu
- a Center for Experimental Medical Research , the Third Xiangya Hospital of Central South University , Changsha , Hunan , P.R. China
| | - Chun Liu
- a Center for Experimental Medical Research , the Third Xiangya Hospital of Central South University , Changsha , Hunan , P.R. China
| | - Hua Lin
- a Center for Experimental Medical Research , the Third Xiangya Hospital of Central South University , Changsha , Hunan , P.R. China
| | - ChaoQun Xu
- b HuNan Cancer Hospital , Changsha , Hunan , P.R. China
| | - LiHua Xie
- a Center for Experimental Medical Research , the Third Xiangya Hospital of Central South University , Changsha , Hunan , P.R. China
| | - ShengHua Sun
- a Center for Experimental Medical Research , the Third Xiangya Hospital of Central South University , Changsha , Hunan , P.R. China
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18
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Hung CM, Liu LC, Ho CT, Lin YC, Way TD. Pterostilbene Enhances TRAIL-Induced Apoptosis through the Induction of Death Receptors and Downregulation of Cell Survival Proteins in TRAIL-Resistance Triple Negative Breast Cancer Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:11179-11191. [PMID: 29164887 DOI: 10.1021/acs.jafc.7b02358] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tumor necrosis factor-related apoptosis-induced ligand (TRAIL) is nontoxic to normal cells and preferentially cytotoxic to cancer cells. Recent data suggest that malignant breast cancer cells often become resistant to TRAIL. Pterostilbene (PTER), a naturally occurring analogue of resveratrol found in blueberries, is known to induce cancer cells to undergo apoptosis. In the present study, we examined whether PTER affects TRAIL-induced apoptosis and its mechanism in TRAIL-resistant triple negative breast cancer (TNBC) cells. Our data indicated that PTER induced apoptosis (14.68 ± 3.78% for 40 μM PTER vs 1.98 ± 0.25% for control, p < 0.01) in TNBC cells and enhanced TRAIL-induced apoptosis in TRAIL-resistant TNBC cells (18.45 ± 4.65% for 40 μM PTER vs 29.38 ± 6.35% for combination of 40 μM PTER and 100 ng/mL TRAIL, p < 0.01). We demonstrated that PTER induced death receptors DR5 and DR4 as well as decreased decoy receptor DcR-1 and DcR-2 expression. PTER also decreased the antiapoptotic proteins c-FLIPS/L, Bcl-Xl, Bcl-2, survivin, and XIAP. PTER induced the cleavage of bid protein and caused proapoptotic Bax accumulation. Moreover, we found that PTER induced the expression of DR4 and DR5 through the reactive oxygen species (ROS)/ endoplasmic reticulum (ER) stress/ERK 1/2 and p38/C/EBP-homologous protein (CHOP) signaling pathways. Overall, our results showed that PTER potentiated TRAIL-induced apoptosis via ROS-mediated CHOP activation leading to the expression of DR4 and DR5.
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Affiliation(s)
- Chao-Ming Hung
- Department of General Surgery, E-Da Hospital, I-Shou University , Kaohsiung, Taiwan
- School of Medicine, I-Shou University , Kaohsiung, Taiwan
| | - Liang-Chih Liu
- Department of Surgery, China Medical University Hospital , Taichung, Taiwan
- School of Medicine, College of Medicine, China Medical University , Taichung, Taiwan
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University , New Brunswick, New Jersey 08901, United States
| | - Ying-Chao Lin
- Division of Neurosurgery, Buddhist Tzu Chi General Hospital, Taichung Branch , Taichung, Taiwan
- School of Medicine, Tzu Chi University , Hualien, Taiwan
- Department of Medical Imaging and Radiological Science, Central Taiwan University of Science and Technology , Taichung, Taiwan
| | - Tzong-Der Way
- Department of Biological Science and Technology, College of Biopharmaceutical and Food Sciences, China Medical University , Taichung, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University , Taichung, Taiwan
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19
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Yang H, Zhang J, Ye X, Yue T, Yuan Y. Prodelphinidin in Hot Water Extract of Bayberry Leaves (<i>Myrica rubra</i> Sieb. et Zucc.) and Its Antioxidant Activity: Influence of Infusion Conditions. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2016. [DOI: 10.3136/fstr.22.829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Haihua Yang
- College of Food Science and Engineering, Northwest A&F University
- College of Biosystem Engineering and Food Science, Zhejiang University
| | | | - Xingqian Ye
- College of Biosystem Engineering and Food Science, Zhejiang University
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A&F University
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