1
|
Jin Z, Wang X. Traditional Chinese medicine and plant-derived natural products in regulating triglyceride metabolism: Mechanisms and therapeutic potential. Pharmacol Res 2024; 208:107387. [PMID: 39216839 DOI: 10.1016/j.phrs.2024.107387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 08/27/2024] [Accepted: 08/28/2024] [Indexed: 09/04/2024]
Abstract
The incidence of cardiometabolic disease is increasing globally, with a trend toward younger age of onset. Among these, atherosclerotic cardiovascular disease is a leading cause of mortality worldwide. Despite the efficacy of traditional lipid-lowering drugs, such as statins, in reducing low-density lipoprotein cholesterol levels, a significant residual risk of cardiovascular events remains, which is closely related to unmet triglyceride (TG) targets. The clinical application of current TG-lowering Western medicines has certain limitations, necessitating alternative or complementary therapeutic strategies. Traditional Chinese medicine (TCM) and plant-derived natural products, known for their safety owing to their natural origins and diverse biological activities, offer promising avenues for TG regulation with potentially fewer side effects. This review systematically summarises the mechanisms of TG metabolism and subsequently reviews the regulatory effects of TCM and plant-derived natural products on TG metabolism, including the inhibition of TG synthesis (via endogenous and exogenous pathways), promotion of TG catabolism, regulation of fatty acid absorption and transport, enhancement of lipophagy, modulation of the gut microbiota, and other mechanisms. In conclusion, through a comprehensive analysis of recent studies, this review consolidates the multifaceted regulatory roles of TCM and plant-derived natural products in TG metabolism and elucidates their potential as safer, multi-target therapeutic agents in managing hypertriglyceridemia and mitigating cardiovascular risk, thereby providing a basis for new drug development.
Collapse
Affiliation(s)
- Zhou Jin
- Cardiovascular Department of Traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Branch of National Clinical Research Center for Chinese Medicine Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Cardiovascular Research Institute of Traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xiaolong Wang
- Cardiovascular Department of Traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Branch of National Clinical Research Center for Chinese Medicine Cardiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Cardiovascular Research Institute of Traditional Chinese Medicine, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| |
Collapse
|
2
|
Sabry MO, Sedeek MS, El-Sonbaty SM, Issa MY, El Zalabani SM. Regulating microsomal triglyceride transfer protein with natural products for the treatment of hyperlipidaemia. Nat Prod Res 2024:1-5. [PMID: 38178602 DOI: 10.1080/14786419.2023.2300031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/20/2023] [Indexed: 01/06/2024]
Abstract
Hyperlipidaemia, characterised by elevated levels of lipids, particularly LDL-C, is a significant risk factor for atherosclerotic cardiovascular disease. While synthetic inhibitors of microsomal triglyceride transfer protein (MTP) have shown potential in lowering LDL-C, they are associated with adverse effects. This study explores a novel approach by screening natural products to identify plant extracts that down-regulate MTP gene expression, aiming to reduce hyperlipidaemia with fewer side effects. Modulating MTP expression, rather than direct inhibition, offers a promising avenue for lowering plasma lipids and mitigating cardiovascular risk. Various plant extracts were examined for their potential as MTP down-regulators, with Liquorice root and Pomegranate rind extracts demonstrating the highest efficacy. Additionally, the study assessed the total phenolic content of these extracts, revealing their -antioxidant capacity. This research provides a foundation for further investigation into bioactive molecules as potential anti-hyperlipidemic agents with improved safety profiles, addressing a critical need in cardiovascular disease prevention.
Collapse
Affiliation(s)
- Miral O Sabry
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mohamed S Sedeek
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Sawsan M El-Sonbaty
- Department of Radiation Microbiology, the National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Nasr City, Egypt
| | - Marwa Y Issa
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | | |
Collapse
|
3
|
Fokina NN, Sukhovskaya IV, Kantserova NP, Lysenko LA. Tissue Lipid Profiles of Rainbow Trout, Oncorhynchus mykiss, Cultivated under Environmental Variables on a Diet Supplemented with Dihydroquercetin and Arabinogalactan. Animals (Basel) 2023; 14:94. [PMID: 38200824 PMCID: PMC10778423 DOI: 10.3390/ani14010094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/05/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
Reared rainbow trout are vulnerable to environmental stressors, in particular seasonal water warming, which affects fish welfare and growth and induces a temperature response, which involves modifications in tissue lipid profiles. Dietary supplements of plant origin, including the studied mix of a flavonoid, dihydroquercetin and a polysaccharide, arabinogalactan (25 and 50 mg per 1 kg of feed, respectively), extracted from larch wood waste, were shown to facilitate stress tolerance in fish and also to be beneficial for the safety of natural ecosystems and the sustainability of aquaculture production. This four-month feeding trial aimed to determine the effects of the supplement on liver and muscle lipid accumulation and the composition in rainbow trout reared under environmental variables. During periods of environmental optimum for trout, a consistent increase in energy lipid stores, particularly triacylglycerols (2.18 vs. 1.49-fold over a growing season), and an overall increase in lipid saturation due to lower levels of PUFAs, such as eicosapentaenoic (20:5n-3), docosahexaenoic (22:6n-3) and arachidonic (20:4n-6) acids, were observed in both control and supplement-fed fish, respectively. However, in fish stressed by an increase in ambient temperature, dietary supplementation with dihydroquercetin and arabinogalactan reduced mortality (3.65 in control vs. 2.88% in supplement-fed fish, p < 0.05) and alleviated the high-temperature-induced inhibition of lipid accumulation. It also stabilised the membrane phospholipid ratio and moderated the fatty acid composition of fish muscle and liver, resulting in higher levels of n-3 PUFAs and their precursors. Thus, the natural compounds tested are beneficial in accelerating fish tolerance to environmental stressors, reducing mortality and thermal response, and moderately improving fillet quality attributes by increasing the protein/lipid ratio and the abundance of fatty acids essential for human nutrition.
Collapse
Affiliation(s)
| | | | - Nadezhda P. Kantserova
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia; (N.N.F.); (I.V.S.); (L.A.L.)
| | | |
Collapse
|
4
|
Sukhovskaya IV, Lysenko LA, Fokina NN, Kantserova NP, Borvinskaya EV. Survival, Growth Performance, and Hepatic Antioxidant and Lipid Profiles in Infected Rainbow Trout ( Oncorhynchus mykiss) Fed a Diet Supplemented with Dihydroquercetin and Arabinogalactan. Animals (Basel) 2023; 13:ani13081345. [PMID: 37106908 PMCID: PMC10135201 DOI: 10.3390/ani13081345] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/27/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Natural feed supplements have been shown to improve fish viability, health, and growth, and the ability to withstand multiple stressors related to intensive cultivation. We assumed that a dietary mix of plant-origin substances, such as dihydroquercetin, a flavonoid with antioxidative, anti-inflammatory, and antimicrobial properties, and arabinogalactan, a polysaccharide with immunomodulating activity, would promote fish stress resistance and expected it to have a protective effect against infectious diseases. Farmed rainbow trout fish, Oncorhynchus mykiss, received either a standard diet or a diet supplemented with 25 mg/kg of dihydroquercetin and 50 mg/kg of arabinogalactan during a feeding season, from June to November. The fish in the control and experimental groups were sampled twice a month (eight samplings in total) for growth variable estimations and tissue sampling. The hepatic antioxidant status was assessed via the quantification of molecular antioxidants, such as reduced glutathione and alpha-tocopherol rates, as well as the enzyme activity rates of peroxidase, catalase, and glutathione-S-transferase. The lipid and fatty acid compositions of the feed and fish liver were analyzed using thin-layer and high-performance liquid chromatography. The viability, size, and biochemical indices of the fish responded to the growth physiology, environmental variables such as the dissolved oxygen content and water temperature, and sporadic factors. Due to an outbreak of a natural bacterial infection in the fish stock followed by antibiotic treatment, a higher mortality rate was observed in the fish that received a standard diet compared to those fed supplemented feed. In the postinfection period, reduced dietary 18:2n-6 and 18:3n-3 fatty acid assimilation contents were detected in the fish that received the standard diet in contrast to the supplemented diet. By the end of the feeding season, an impaired antioxidant response, including reduced glutathione S-transferase activity and glutathione content, and a shift in the composition of membrane lipids, such as sterols, 18:1n-7 fatty acid, and phospholipids, were also revealed in fish fed the standard diet. Dietary supplementation with plant-origin substances, such as dihydroquercetin and arabinogalactan, decreases lethality in fish stocks, presumably though the stimulation of natural resistance in farmed fish, thereby increasing the economic efficacy during fish production. From the sustainable aquaculture perspective, natural additives also diminish the anthropogenic transformation of aquaculture-bearing water bodies and their ecosystems.
Collapse
Affiliation(s)
- Irina V Sukhovskaya
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia
| | - Liudmila A Lysenko
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia
| | - Natalia N Fokina
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia
| | - Nadezhda P Kantserova
- Laboratory of Environmental Biochemistry, Institute of Biology, Karelian Research Centre of the Russian Academy of Sciences, 185910 Petrozavodsk, Russia
| | | |
Collapse
|
5
|
Sukhovskaya IV, Kantserova NP, Lysenko LA, Morozov AA. Taxifolin Modulates Transcriptomic Response to Heat Stress in Rainbow Trout, Oncorhynchus mykiss. Animals (Basel) 2022; 12:ani12101321. [PMID: 35625167 PMCID: PMC9137817 DOI: 10.3390/ani12101321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 12/10/2022] Open
Abstract
Taxifolin is a natural flavonoid known for its antioxidant, anti-inflammatory, and antiproliferative effects on animals. In this work, we have studied the effect of this compound on rainbow trout, Oncorhynchus mykiss, a major object of aquaculture, under slowly increasing ambient temperature and Gyrodactylus flatworm infection. Transcriptomic profiling of liver samples performed by using the Illumina HiSeq 2500 sequencing platform shows that a combined taxifolin/heat treatment, unlike heat treatment alone, downregulates the production of isopentenyl diphosphate, likely affecting the production of cholesterol and other sterols. Taxifolin treatment also modulates multiple apoptosis regulators and affects the expression of HSPs in response to increasing temperature. On the other hand, the expression of antioxidant enzymes in response to heat is not significantly affected by taxifolin. As for the Gyrodactylus infection, the parasite load is not affected by taxifolin treatment, although it was lower in the high-temperature group. Parasite load also did not induce a statistically significant transcriptomic response within the no heat/no taxifolin group.
Collapse
Affiliation(s)
- Irina V. Sukhovskaya
- Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences (IB KarRC RAS), 11 Pushkinskaya Street, 185910 Petrozavodsk, Russia; (I.V.S.); (L.A.L.)
| | - Nadezhda P. Kantserova
- Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences (IB KarRC RAS), 11 Pushkinskaya Street, 185910 Petrozavodsk, Russia; (I.V.S.); (L.A.L.)
- Correspondence:
| | - Liudmila A. Lysenko
- Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences (IB KarRC RAS), 11 Pushkinskaya Street, 185910 Petrozavodsk, Russia; (I.V.S.); (L.A.L.)
| | - Alexey A. Morozov
- Limnological Institute of the Siberian Branch of the Russian Academy of Sciences (LIN SB RAS), 3 Ulan-Batorskaya Street, 664033 Irkutsk, Russia;
| |
Collapse
|
6
|
Tan Z, Halter B, Liu D, Gilbert ER, Cline MA. Dietary Flavonoids as Modulators of Lipid Metabolism in Poultry. Front Physiol 2022; 13:863860. [PMID: 35547590 PMCID: PMC9081441 DOI: 10.3389/fphys.2022.863860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/07/2022] [Indexed: 01/04/2023] Open
Abstract
Flavonoids, naturally-occurring compounds with multiple phenolic structures, are the most widely distributed phytochemicals in the plant kingdom, and are mainly found in vegetables, fruits, grains, roots, herbs, and tea and red wine products. Flavonoids have health-promoting effects and are indispensable compounds in nutritional and pharmaceutical (i.e., nutraceutical) applications. Among the demonstrated bioactive effects of flavonoids are anti-oxidant, anti-inflammatory, and anti-microbial in a range of research models. Through dietary formulation strategies, numerous flavonoids provide the ability to support bird health while improving the nutritional quality of poultry meat and eggs by changing the profile of fatty acids and reducing cholesterol content. A number of such compounds have been shown to inhibit adipogenesis, and promote lipolysis and apoptosis in adipose tissue cells, and thereby have the potential to affect fat accretion in poultry at various ages and stages of production. Antioxidant and anti-inflammatory properties contribute to animal health by preventing free radical damage in tissues and ameliorating inflammation in adipose tissue, which are concerns in broiler breeders and laying hens. In this review, we summarize the progress in understanding the effects of dietary flavonoids on lipid metabolism and fat deposition in poultry, and discuss the associated physiological mechanisms.
Collapse
Affiliation(s)
- Zhendong Tan
- Department of Animal and Poultry Sciences, Blacksburg, VA, United States
| | - Bailey Halter
- Department of Animal and Poultry Sciences, Blacksburg, VA, United States
| | - Dongmin Liu
- Department of Human Nutrition, Foods, and Exercise, Blacksburg, VA, United States
| | | | - Mark A Cline
- Department of Animal and Poultry Sciences, Blacksburg, VA, United States
| |
Collapse
|
7
|
Yang D, Zhang QF. The natural source, physicochemical properties, biological activities and metabolism of astilbin. Crit Rev Food Sci Nutr 2022; 63:9506-9518. [PMID: 35442837 DOI: 10.1080/10408398.2022.2065661] [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] [Indexed: 11/03/2022]
Abstract
Astilbin is a dihydroflavanol found in many plants and processed foods. Astilbin possesses multiple health-beneficial bioactivities and has received great attention. Hence, the natural source, physicochemical properties, biological activities and metabolism of astilbin are summarized in the present article. Engelhardia roxburghiana Wall. and Smilax glabra Roxb. are the main resource for astilbin purification because of high content. Because of chemical instability, astilbin amount in foods is dependent on the processing and storage conditions. The degradation of astilbin includes isomerization and decomposition. The interconversion of astilbin and its isomers occurs through a chalcone intermediates, which significantly affects the taste of wine during storage. Many factors such as temperature, pH, metal ions and food additives could affect the chemical stability of astilbin. Astilbin exhibits very novel selective immunosuppressive activity, which is not found in other compounds. The rhamnose moiety of astilbin is essential for this bioactivity. After digestion, astilbin was mainly absorbed and transported in circulatory blood in its intact form, and only one metabolite, 3'-O-methylastilbin, was found. Although having many bioactivities, astilbin faces the challenge of poor bioavailability. Some promising strategies were developed for improving its bioavailability, particularly through fabrication the zein nanoparticles.
Collapse
Affiliation(s)
- Dan Yang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, China
| | - Qing-Feng Zhang
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, China
| |
Collapse
|
8
|
Seong EH, Gong DS, Shiwakoti S, Adhikari D, Kim HJ, Oak MH. Taxifolin as a Major Bioactive Compound in the Vasorelaxant Effect of Different Pigmented Rice Bran Extracts. Front Pharmacol 2022; 13:799064. [PMID: 35387354 PMCID: PMC8979019 DOI: 10.3389/fphar.2022.799064] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 03/04/2022] [Indexed: 11/25/2022] Open
Abstract
Cardiovascular disease is one of the leading causes of morbidity and mortality in recent years. The intake of polyphenol rich diets has been associated with improved cardiovascular function and reduced cardiovascular risks. Oryza sativa L. is one of the most common cereals worldwide. Rice bran, a byproduct of the rice milling process, contains many bioactive ingredients, including polyphenols, polysaccharides, proteins, and micronutrients. It is also consumed as a healthy diet in the form of rice bran oil and powder in many Asian countries like Japan, South Korea, and India for its several health benefits as a natural antioxidant. Thus, this study evaluated the vasorelaxant effect of ethanolic extracts of brown, green, red, and black rice bran and investigated its underlying vasorelaxant mechanism. Among the four rice bran extracts (RBEs) examined, the red rice bran extract (RRBE) had a strong endothelium-dependent vasorelaxant effect, which was markedly prevented by N-ω-nitro-L-arginine [endothelial nitric oxide synthase (eNOS) inhibitor], wortmannin [phosphoinositide-3 kinase (PI3K) inhibitor], and 1H-[1,2,4]oxadiazole[4,3-alpha]quinoxalin-1-one (inhibitor of guanylate cyclase). Likewise, RRBE induced the phosphorylation of eNOS and Src in cultured endothelial cells, thereby stimulating NO formation. Altogether, these findings propose that RRBE induces endothelium-dependent relaxation, involving at least in part, NO-mediated signaling through the PI3K/eNOS pathway. Further, LC-PDA analysis conducted on the four RBEs also revealed that RRBE highly contained taxifolin, which is an active flavanonol that induces endothelium-dependent vasorelaxation, compared to other RBEs. Subsequently, the underlying mechanism of taxifolin was assessed through vascular reactivity studies with pharmacological inhibitors similar to that of RRBE. These findings deciphered a distinct difference in vasorelaxant effects between RRBE and the other RBEs. We also observed that RRBE induced a potent endothelium-dependent NO-mediated relaxation in coronary artery rings, which involved the Src/PI3K pathway that activates eNOS. Additionally, taxifolin exhibited, at least in part, similar vasoprotective effects of RRBE. Therefore, we propose that RRBE may serve as natural sources of functional phytochemicals that improve cardiovascular diseases associated with disturbed NO production and endothelial dysfunction.
Collapse
Affiliation(s)
- Eun-Hee Seong
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Dal-Seong Gong
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Saugat Shiwakoti
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Deepak Adhikari
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Hyun Jung Kim
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| | - Min-Ho Oak
- College of Pharmacy, Mokpo National University, Mokpo, South Korea
| |
Collapse
|
9
|
Pan B, Xia Y, Gao Z, Zhao G, Wang L, Fang S, Liu L, Yan S. Cinnamomi Ramulus inhibits the growth of colon cancer cells via Akt/ERK signaling pathways. Chin Med 2022; 17:36. [PMID: 35264225 PMCID: PMC8905814 DOI: 10.1186/s13020-022-00588-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/26/2022] [Indexed: 12/24/2022] Open
Abstract
Background Colon cancer (CC) ranks the second highest mortality rate among malignant tumors worldwide, and the current mainstream treatment regimens are not very effective. The unique efficacy of Chinese herb medicine (CHM) for cancer has recently attracted increasing attention. Cinnamomi Ramulus (CR), as a classic CHM, has been widely used in the treatment of a variety of diseases for hundreds of years in China, but its specific pharmacological mechanism against CC needs to be fully evaluated. Methods TCMSP and China National Knowledge Infrastructure database were utilized to predict the candidate ingredients of CR, and TCMSP and SwissTargetPrediction database were also employed to predict the drug targets of the candidate ingredients from CR. We subsequently evaluated the therapeutic effect of CR by orally administrating it on CC-bearing mice. Next, we further identified the potential CC-related targets by using Gene Expression Omnibus (GEO) database. Based on these obtained targets, the drug/disease-target PPI networks were constructed using Bisogenet plugin of Cytoscape. The potential core therapeutic targets were then identified through topological analysis using CytoNCA plugin. GO and KEGG enrichment analyses were performed to predict the underlying mechanism of CR against CC. Furthermore, these in silico analysis results were validated by a series of cellular functional and molecular biological assays. UPLC–MS/MS method and molecular docking analysis were employed to identify the potential key components from CR. Results In this study, we firstly found that CR has potential therapeutic effect on cancer. Then, oral administration of CR could inhibit the growth of CC cells in C57BL/6 mice, while inhibiting the viability and motility of CC cells in vitro. We obtained 111 putative core therapeutic targets of CR. Subsequent enrichment analysis on these targets showed that CR could induce apoptosis and cell cycle arrest in CC cells by blocking Akt/ERK signaling pathways, which was further experimentally verified. We identified 5 key components from the crude extract of CR, among which taxifolin was found most likely to be the key active component against CC. Conclusions Our results show that CR as well as its active component taxifolin holds great potential in treatment of CC. Supplementary Information The online version contains supplementary material available at 10.1186/s13020-022-00588-6.
Collapse
Affiliation(s)
- Boyu Pan
- Tianjin Key Laboratory of Acute Abdomen Disease Associated Organ Injury and ITCWM Repair, ITCWM Hospital, Tianjin University, No.92 Weijin Road, Nankai District, Tianjin, 300072, China.,Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer, National Clinical Research Center for Cancer, Huanhuxi Road, Hexi District, Tianjin, 300060, China
| | - Yafei Xia
- Tianjin Key Laboratory of Acute Abdomen Disease Associated Organ Injury and ITCWM Repair, ITCWM Hospital, Tianjin University, No.92 Weijin Road, Nankai District, Tianjin, 300072, China
| | - Zilu Gao
- Department of Maxillofacial and Otorhinolaryngological Oncology, Tianjin Medical University Cancer Institute & Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer, National Clinical Research Center for Cancer, Tianjin, 300060, China
| | - Gang Zhao
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer, National Clinical Research Center for Cancer, Huanhuxi Road, Hexi District, Tianjin, 300060, China
| | - Liangjiao Wang
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer, National Clinical Research Center for Cancer, Huanhuxi Road, Hexi District, Tianjin, 300060, China
| | - Senbiao Fang
- School of Information Science and Engineering, Central South University, Yuelu District, Changsha, 410006, Hunan, China.
| | - Liren Liu
- Department of Gastrointestinal Cancer Biology, Tianjin Medical University Cancer Institute & Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin; Tianjin's Clinical Research Center for Cancer, National Clinical Research Center for Cancer, Huanhuxi Road, Hexi District, Tianjin, 300060, China.
| | - Shu Yan
- Tianjin Key Laboratory of Acute Abdomen Disease Associated Organ Injury and ITCWM Repair, ITCWM Hospital, Tianjin University, No.92 Weijin Road, Nankai District, Tianjin, 300072, China.
| |
Collapse
|
10
|
Qi X, Li Q, Che X, Wang Q, Wu G. The Uniqueness of Clear Cell Renal Cell Carcinoma: Summary of the Process and Abnormality of Glucose Metabolism and Lipid Metabolism in ccRCC. Front Oncol 2021; 11:727778. [PMID: 34604067 PMCID: PMC8479096 DOI: 10.3389/fonc.2021.727778] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/10/2021] [Indexed: 12/27/2022] Open
Abstract
Kidney cancer is a cancer with an increasing incidence in recent years. Clear cell renal cell carcinoma (ccRCC) accounts for up to 80% of all kidney cancers. The understanding of the pathogenesis, tumor progression, and metastasis of renal carcinoma is not yet perfect. Kidney cancer has some characteristics that distinguish it from other cancers, and the metabolic aspect is the most obvious. The specificity of glucose and lipid metabolism in kidney cancer cells has also led to its being studied as a metabolic disease. As the most common type of kidney cancer, ccRCC has many characteristics that represent the specificity of kidney cancer. There are features that we are very concerned about, including the presence of lipid droplets in cells and the obesity paradox. These two points are closely related to glucose metabolism and lipid metabolism. Therefore, we hope to explore whether metabolic changes affect the occurrence and development of kidney cancer by looking for evidence of changes on expression at the genomic and protein levels in glucose metabolism and lipid metabolism in ccRCC. We begin with the representative phenomenon of abnormal cancer metabolism: the Warburg effect, through the collection of popular metabolic pathways and related genes in the last decade, as well as some research hotspots, including the role of ferroptosis and glutamine in cancer, systematically elaborated the factors affecting the incidence and metastasis of kidney cancer. This review also identifies the similarities and differences between kidney cancer and other cancers in order to lay a theoretical foundation and provide a valid hypothesis for future research.
Collapse
Affiliation(s)
- Xiaochen Qi
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Quanlin Li
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiangyu Che
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Qifei Wang
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Guangzhen Wu
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| |
Collapse
|
11
|
Recent Molecular Mechanisms and Beneficial Effects of Phytochemicals and Plant-Based Whole Foods in Reducing LDL-C and Preventing Cardiovascular Disease. Antioxidants (Basel) 2021; 10:antiox10050784. [PMID: 34063371 PMCID: PMC8157003 DOI: 10.3390/antiox10050784] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/07/2021] [Accepted: 05/12/2021] [Indexed: 12/19/2022] Open
Abstract
Abnormal lipid metabolism leads to the development of hyperlipidemia, a common cause of multiple chronic disorders, including cardiovascular disease (CVD), obesity, diabetes, and cerebrovascular disease. Low-density lipoprotein cholesterol (LDL-C) currently remains the primary target for treatment of hyperlipidemia. Despite the advancement of treatment and prevention of hyperlipidemia, medications used to manage hyperlipidemia are limited to allopathic drugs, which present certain limitations and adverse effects. Increasing evidence indicates that utilization of phytochemicals and plant-based whole foods is an alternative and promising strategy to prevent hyperlipidemia and CVD. The current review focuses on phytochemicals and their pharmacological mode of actions for the regulation of LDL-C and prevention of CVD. The important molecular mechanisms illustrated in detail in this review include elevation of reverse cholesterol transport, inhibition of intestinal cholesterol absorption, acceleration of cholesterol excretion in the liver, and reduction of cholesterol synthesis. Moreover, the beneficial effects of plant-based whole foods, such as fresh fruits, vegetables, dried nuts, flax seeds, whole grains, peas, beans, vegan diets, and dietary fibers in LDL-C reduction and cardiovascular health are summarized. This review concludes that phytochemicals and plant-based whole foods can reduce LDL-C levels and lower the risk for CVD.
Collapse
|
12
|
Ren L, Guo HN, Yang J, Guo XY, Wei YS, Yang Z. Dissecting Efficacy and Metabolic Characteristic Mechanism of Taxifolin on Renal Fibrosis by Multivariate Approach and Ultra-Performance Liquid Chromatography Coupled With Mass Spectrometry-Based Metabolomics Strategy. Front Pharmacol 2021; 11:608511. [PMID: 33519473 PMCID: PMC7841412 DOI: 10.3389/fphar.2020.608511] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 11/26/2020] [Indexed: 12/15/2022] Open
Abstract
Taxifolin (TFN) is an important natural compound with antifibrotic activity; however, its pharmacological mechanism is not clear. In this study, our aim is to gain insight into the effects of TFN and its potential mechanisms in unilateral ureteral obstruction (UUO) animal model using metabolomics approach to identify the metabolic biomarkers and perturbed pathways. Serum metabolomics analysis by UPLC-Q-TOF/MS was carried out to discover the changes in the metabolic profile. It showed that TFN has a significant protective effect on UUO-induced renal fibrosis and a total of 32 potential biomarkers were identified and related to RF progression. Of note, 27 biomarkers were regulated by TFN treatment, which participate in eight metabolic pathways, including phenylalanine, tyrosine and tryptophan biosynthesis, and phenylalanine metabolism. It also showed that metabolomics was a promising strategy to better dissect metabolic characteristics and pharmacological mechanisms of natural compounds by multivariate approach and ultra-performance liquid chromatography coupled with mass spectrometry.
Collapse
Affiliation(s)
- Lei Ren
- Department of Clinical Laboratory, Affiliated Hospital of Guilin Medical University, Guangxi, China
| | - Hao-Nan Guo
- Department of Clinical Laboratory, Affiliated Hospital of Guilin Medical University, Guangxi, China
| | - Jun Yang
- Department of Clinical Laboratory, Affiliated Hospital of Guilin Medical University, Guangxi, China
| | - Xiao-Ying Guo
- Department of Clinical Laboratory, Daqing Oilfield General Hospital, Daqing, China
| | - Ye-Sheng Wei
- Department of Clinical Laboratory, Affiliated Hospital of Guilin Medical University, Guangxi, China
| | - Zhao Yang
- Department of Clinical Laboratory, Affiliated Hospital of Guilin Medical University, Guangxi, China
| |
Collapse
|
13
|
Qiu XL, Zhang QF. Acidic hydrolysis of astilbin and its application for the preparation of taxifolin from Rhizoma Smilacis Glabrae. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820948357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The acidic hydrolysis of astilbin to produce its aglycone, taxifolin, was investigated in this study. The effects of aq. HCl concentration and temperature on the reaction were studied, and the kinetic parameters were calculated. The results showed that with higher aq. HCl concentration and temperature, the hydrolysis of astilbin became faster. The activation energy of the hydrolysis reaction under 1 mol L−1 aq. HCl was calculated with a value of 148.6 kJ mol−1. The reaction was successfully applied to produce taxifolin from a sample of Rhizoma Smilacis Glabrae. A simple method for the purification of taxifolin from Rhizoma Smilacis Glabrae was developed with purity of 97.5%.
Collapse
Affiliation(s)
- Xiao-Lin Qiu
- College of New Energy and Environmental Engineering, Nanchang Institute of Technology, Nanchang, P.R. China
| | - Qing-Feng Zhang
- College of New Energy and Environmental Engineering, Nanchang Institute of Technology, Nanchang, P.R. China
- Jiangxi Key Laboratory of Natural Product and Functional Food, College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, P.R. China
| |
Collapse
|
14
|
El‐Hadad SS, Tikhomirova NA, Abd El‐Aziz M. Biological activities of dihydroquercetin and its effect on the oxidative stability of butter oil. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14519] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Sameh Sobhy El‐Hadad
- Department of Technology and Biotech of Food Products of Animal Origin Moscow State University of Food Production Moscow Russia
- Dairy Department National Research Centre Dokki Giza Egypt
| | | | | |
Collapse
|
15
|
Sunil C, Xu B. An insight into the health-promoting effects of taxifolin (dihydroquercetin). PHYTOCHEMISTRY 2019; 166:112066. [PMID: 31325613 DOI: 10.1016/j.phytochem.2019.112066] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 07/07/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Taxifolin (3,5,7,3,4-pentahydroxy flavanone or dihydroquercetin) is a flavonoid commonly found in onion, milk thistle, French maritime pine bark and Douglas fir bark. It is also used in various commercial preparations like Legalon™, Pycnogenol®, and Venoruton®. This review focuses on taxifolin's biological activities and related molecular mechanisms. Published literatures were gathered from the scientific databases like PubMed, SciFinder, ScienceDirect, Wiley Online Library, Google Scholar, and Web of Science up to January 2019. Taxifolin showed promising pharmacological activities in the management of inflammation, tumors, microbial infections, oxidative stress, cardiovascular, and liver disorders. The anti-cancer activity was more prominent than other activities evaluated using different in vitro and in vivo models. Further research on the pharmacokinetics, in-depth molecular mechanisms, and safety profile using well-designed randomized clinical studies are suggested to develop a drug for human use.
Collapse
Affiliation(s)
- Christudas Sunil
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, China
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, China.
| |
Collapse
|
16
|
Ji X, Shi S, Liu B, Shan M, Tang D, Zhang W, Zhang Y, Zhang L, Zhang H, Lu C, Wang Y. Bioactive compounds from herbal medicines to manage dyslipidemia. Biomed Pharmacother 2019; 118:109338. [DOI: 10.1016/j.biopha.2019.109338] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/31/2019] [Accepted: 08/05/2019] [Indexed: 02/07/2023] Open
|
17
|
Veloso CC, Oliveira MC, Rodrigues VG, Oliveira CC, Duarte LP, Teixeira MM, Ferreira AVM, Perez AC. Evaluation of the effects of extracts of Maytenus imbricata (Celastraceae) on the treatment of inflammatory and metabolic dysfunction induced by high-refined carbohydrate diet. Inflammopharmacology 2018; 27:539-548. [PMID: 29855750 DOI: 10.1007/s10787-018-0496-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 05/17/2018] [Indexed: 01/14/2023]
Abstract
The Maytenus genus is a member of the Celastraceae family. Numerous medicinal uses were assigned to species of this genus, with the use of roots, bark, and leaves for the treatment of gastric ulcers, as anti-inflammatory, analgesic, antiallergic, antitumor, among others. Several studies have demonstrated that natural products derived from plants have an important role in the prevention and treatment of obesity. Accordingly, we evaluated the effect of Maytenus imbricata extracts in the treatment of obesity induced by diet rich in refined carbohydrate (HC). BALB/c mice were fed chow or HC diet for 8 weeks. At the beginning of the 9th week, the HC group was subdivided into three groups: (i) group of animals that continued to consume only HC diet; (ii) the group of animals fed HC diet supplemented with ethyl acetate extract of M. imbricata roots (HC + EAE); (iii) the group of animals fed HC diet supplemented with extract in hexane/ethyl ether (HC + HEE). The period of extracts supplementation was 4 weeks. It was observed that EAE and EHE when added to the HC diet modulated the metabolic and inflammatory changes, such as: reduced the adipocytes area, improved glucose intolerance, reduced the levels of triglycerides and resistin in serum, and the number of total leukocytes in blood. In the epididymal adipose tissue, the extracts reduced proinflammatory mediators' concentration. According to the results, it was concluded that the species Maytenus imbricata has the potential to be used for the treatment of obesity.
Collapse
Affiliation(s)
- C C Veloso
- Pharmaceutical Sciences Faculty, Federal University of Amazonas (UFAM), Manaus, Amazonas, Brazil. .,Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas (UFAM), Av. General Rodrigo Octávio Jordão Ramos, 3000, Coroado I, Manaus, Amazonas, 69.077-000, Brazil.
| | - M C Oliveira
- Department of Nutrition, Nursing School, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.,Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - V G Rodrigues
- Department of Chemistry, Institute of Exact Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - C C Oliveira
- Department of Pharmacology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - L P Duarte
- Department of Chemistry, Institute of Exact Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - M M Teixeira
- Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - A V M Ferreira
- Department of Nutrition, Nursing School, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.,Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - A C Perez
- Department of Pharmacology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| |
Collapse
|
18
|
She T, Feng J, Lian S, Li R, Zhao C, Song G, Luo J, Dawuti R, Cai S, Qu L, Shou C. Sarsaparilla (Smilax Glabra Rhizome) Extract Activates Redox-Dependent ATM/ATR Pathway to Inhibit Cancer Cell Growth by S Phase Arrest, Apoptosis, and Autophagy. Nutr Cancer 2017; 69:1281-1289. [PMID: 29111814 DOI: 10.1080/01635581.2017.1362447] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Tiantian She
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Junnan Feng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Shenyi Lian
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Ruobing Li
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Chuanke Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Guoliang Song
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Jie Luo
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Rouxianguli Dawuti
- Department of Clinical Immunology, School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Shaoqing Cai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Like Qu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Chengchao Shou
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing, China
| |
Collapse
|
19
|
Wang Q, Wang L, Li G, Ye B. A simple and sensitive method for determination of taxifolin on palladium nanoparticles supported poly (diallyldimethylammonium chloride) functionalized graphene modified electrode. Talanta 2017; 164:323-329. [DOI: 10.1016/j.talanta.2016.11.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/18/2016] [Accepted: 11/20/2016] [Indexed: 11/29/2022]
|
20
|
Abstract
Microsomal triglyceride transfer protein (MTP) is one of the promising targets for the therapy of dyslipidemia and MTP inhibition can lead to robust plasma low-density lipoprotein cholesterol (LDL-C) reduction. Lomitapide, a small-molecule MTP inhibitor, was recently approved by the US FDA as an additional treatment for homozygous familial hypercholesterolemia (hoFH). However, liver-related side effects, including hepatic fat accumulation and transaminase elevations, are the main safety concerns associated with MTP inhibitors. Here, we review recent knowledge on the mechanisms underlying liver toxicity of MTP inhibitors. The contribution of altered levels of intracellular triglycerides, cholesteryl esters, and free cholesterols toward cellular dysfunction is specifically addressed. On this basis, therapies targeted to attenuate cellular lipid accumulation, to reduce risk factors for non-alcoholic fatty liver disease (NAFLD) (i.e., insulin resistance and oxidative stress) and to specifically inhibit intestinal MTP may be useful for ameliorating liver damage induced by MTP inhibitors. In particular, weight loss through lifestyle interventions is expected to be the most effective and safest way to minimize the undesirable side effects. Specific dietary supplementation might also have protective effects against hepatosteatosis. Despite that, to date, few clinical data support these therapeutic options in MTP inhibition-related liver damage, such proposed approaches may be further explored in the future for their use in preventing unwanted effects of MTP inhibitors.
Collapse
|
21
|
She T, Zhao C, Feng J, Wang L, Qu L, Fang K, Cai S, Shou C. Sarsaparilla (Smilax Glabra Rhizome) extract inhibits migration and invasion of cancer cells by suppressing TGF-β1 pathway. PLoS One 2015; 10:e0118287. [PMID: 25742000 PMCID: PMC4351248 DOI: 10.1371/journal.pone.0118287] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Accepted: 01/12/2015] [Indexed: 02/06/2023] Open
Abstract
Sarsaparilla, also known as Smilax Glabra Rhizome (SGR), was shown to modulate immunity, protect against liver injury, lower blood glucose and suppress cancer. However, its effects on cancer cell adhesion, migration and invasion were unclear. In the present study, we found that the supernatant of water-soluble extract from SGR (SW) could promote adhesion, inhibit migration and invasion of HepG2, MDA-MB-231 and T24 cells in vitro, as well as suppress metastasis of MDA-MB-231 cells in vivo. Results of F-actin and vinculin dual staining showed the enhanced focal adhesion in SW-treated cells. Microarray analysis indicated a repression of TGF-β1 signaling by SW treatment, which was verified by real-time RT-PCR of TGF-β1-related genes and immunoblotting of TGFBR1 protein. SW was also shown to antagonize TGF-β1-promoted cell migration. Collectively, our study revealed a new antitumor function of Sarsaparilla in counteracting invasiveness of a subset of cancer cells by inhibiting TGF-β1 signaling.
Collapse
Affiliation(s)
- Tiantian She
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Chuanke Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Junnan Feng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Lixin Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Like Qu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Ke Fang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
| | - Shaoqing Cai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Chengchao Shou
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China
- * E-mail:
| |
Collapse
|
22
|
Loria P, Marchesini G, Nascimbeni F, Ballestri S, Maurantonio M, Carubbi F, Ratziu V, Lonardo A. Cardiovascular risk, lipidemic phenotype and steatosis. A comparative analysis of cirrhotic and non-cirrhotic liver disease due to varying etiology. Atherosclerosis 2014; 232:99-109. [PMID: 24401223 DOI: 10.1016/j.atherosclerosis.2013.10.030] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 10/23/2013] [Accepted: 10/24/2013] [Indexed: 02/08/2023]
|
23
|
Veloso CDC, de Oliveira MC, Oliveira CDC, Rodrigues VG, Giusti-Paiva A, Teixeira MM, Duarte ID, Ferreira AVM, Perez ADC. Hydroethanolic extract of Pyrostegia venusta (Ker Gawl.) Miers flowers improves inflammatory and metabolic dysfunction induced by high-refined carbohydrate diet. JOURNAL OF ETHNOPHARMACOLOGY 2013; 151:722-728. [PMID: 24309496 DOI: 10.1016/j.jep.2013.11.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 11/15/2013] [Accepted: 11/24/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pyrostegia venusta is used in traditional Brazilian medicine as a general tonic to treat any inflammatory disease. Several studies have demonstrated that medicinal plants constitute a therapeutic approach for the treatment of obesity-related metabolic and inflammatory disarrangement. Accordingly, we investigated the effects of hydroethanolic extract of Pyrostegia venusta flowers (PvHE) supplementation for the treatment of inflammatory and metabolic dysfunction induced by high-refined-carbohydrate (HC) diet. MATERIAL AND METHODS The BALB/c mice were fed chow or HC diet for 8 weeks. Part of these animals was fed with HC diet supplemented with PvHE on the 9th week until the 12th week. At the end of the dietary intervention, animals were sacrificed. RESULTS We observed that PvHE decreased adiposity and adipocyte area; improved glucose intolerance; reduced serum triacylglycerol levels and systemic inflammatory cells; and also reduced some inflammatory mediators levels in adipose tissue and liver. CONCLUSION The results showed that PvHE has beneficial effects and may treat inflammatory and metabolic dysfunction induced by HC diet, that are associated to a negative modulation of the inflammatory process at systemic and local levels.
Collapse
Affiliation(s)
- Clarice de Carvalho Veloso
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Marina Chaves de Oliveira
- Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil; Department of Nutrition, Nursing School, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Cristina da Costa Oliveira
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | | | - Alexandre Giusti-Paiva
- Department of Physiological Sciences, Institute of Biomedical Sciences, Federal University of Alfenas (UNIFAL), Alfenas, Minas Gerais, Brazil
| | - Mauro Martins Teixeira
- Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Igor Dimitri Duarte
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Adaliene Versiani Matos Ferreira
- Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil; Department of Nutrition, Nursing School, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Andrea de Castro Perez
- Department of Pharmacology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.
| |
Collapse
|
24
|
Kim JH, Lee HJ, Park Y, Ra KS, Shin KS, Yu KW, Suh HJ. Mucilage removal from cactus cladodes (Opuntia humifusa Raf.) by enzymatic treatment to improve extraction efficiency and radical scavenging activity. Lebensm Wiss Technol 2013. [DOI: 10.1016/j.lwt.2012.10.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
25
|
Zhang ZR, Al Zaharna M, Wong MMK, Chiu SK, Cheung HY. Taxifolin enhances andrographolide-induced mitotic arrest and apoptosis in human prostate cancer cells via spindle assembly checkpoint activation. PLoS One 2013; 8:e54577. [PMID: 23382917 PMCID: PMC3557238 DOI: 10.1371/journal.pone.0054577] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2011] [Accepted: 12/13/2012] [Indexed: 01/09/2023] Open
Abstract
Andrographolide (Andro) suppresses proliferation and triggers apoptosis in many types of cancer cells. Taxifolin (Taxi) has been proposed to prevent cancer development similar to other dietary flavonoids. In the present study, the cytotoxic and apoptotic effects of the addition of Andro alone and Andro and Taxi together on human prostate carcinoma DU145 cells were assessed. Andro inhibited prostate cancer cell proliferation by mitotic arrest and activation of the intrinsic apoptotic pathway. Although the effect of Taxi alone on DU145 cell proliferation was not significant, the combined use of Taxi with Andro significantly potentiated the anti-proliferative effect of increased mitotic arrest and apoptosis by enhancing the cleavage of poly(ADP-ribose) polymerase, and caspases-7 and -9. Andro together with Taxi enhanced microtubule polymerization in vitro, and they induced the formation of twisted and elongated spindles in the cancer cells, thus leading to mitotic arrest. In addition, we showed that depletion of MAD2, a component in the spindle assembly checkpoint (SAC), alleviated the mitotic block induced by the two compounds, suggesting that they trigger mitotic arrest by SAC activation. This study suggests that the anti-cancer activity of Andro can be significantly enhanced in combination with Taxi by disrupting microtubule dynamics and activating the SAC.
Collapse
Affiliation(s)
- Zhong Rong Zhang
- Research Group for Bioactive Products, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Mazen Al Zaharna
- Research Group for Bioactive Products, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Matthew Man-Kin Wong
- Research Group for Bioactive Products, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Sung-Kay Chiu
- Research Group for Bioactive Products, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Hon-Yeung Cheung
- Research Group for Bioactive Products, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, China
- * E-mail:
| |
Collapse
|
26
|
Weidmann AE. Dihydroquercetin: More than just an impurity? Eur J Pharmacol 2012; 684:19-26. [PMID: 22513183 DOI: 10.1016/j.ejphar.2012.03.035] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 03/09/2012] [Accepted: 03/22/2012] [Indexed: 12/19/2022]
Abstract
Dihydroquercetin (taxifolin) is a potent flavonoid found in onions, French maritime bark, milk thistle, tamarind seeds and commercially available semi-synthetic monoHER marketed as Venoruton. This review focuses on the therapeutic promise of dihydroquercetin in major disease states such as cancer, cardiovascular disease and liver disease by reviewing the proposed mechanism(s) of action, including the activation of the antioxidant response element (ARE) and detoxifying phase II enzymes, inhibition of cytochrome P(450) and fatty acid synthase in carcinogenesis. TNF-alpha and NF-ĸB dependent transcription in hepatitis C infections, the scavenging effect of myeloperoxidase (MPO) derived reactive nitrogen species and subsequent effects on cholesterol biosynthesis as well as the effects on apob/apoA-I, HMG-CoA reductase and apoptosis are reviewed. The stereochemistry and pro-oxidant effect of dihydroquercetin are also considered. Although the majority of research on dihydroquercetin to date has focused on the identification of molecular targets in vitro, this review will bring together evidence of the potency and mode of action of dihydroquercetin and will propose a role for the therapeutic potential of flavonoid antioxidants.
Collapse
Affiliation(s)
- Anita Elaine Weidmann
- Robert Gordon University, School of Pharmacy and Life Sciences, Schoolhill, Aberdeen AB10 1FR, UK.
| |
Collapse
|
27
|
New isochaetochromin, an inhibitor of triacylglycerol synthesis in mammalian cells, produced by Penicillium sp. FKI-4942: I. Taxonomy, fermentation, isolation and biological properties. J Antibiot (Tokyo) 2011; 65:15-9. [PMID: 22108679 DOI: 10.1038/ja.2011.105] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A new bis-naphtho-γ-pyrone isomer named isochaetochromin A(1) was isolated along with known isochaetochromins B(1) and B(2) from the culture broth of Penicillium sp. FKI-4942 by solvent extraction, silica gel column chromatography and HPLC. Among them, isochaetochromin B(1) showed the most potent inhibitory activity of triacylglycerol synthesis with an IC(50) value of 5.6 μM, followed by isochaetochromins B(2) (IC(50), 11 μM) and A(1) (33 μM).
Collapse
|
28
|
González-Castejón M, Rodriguez-Casado A. Dietary phytochemicals and their potential effects on obesity: A review. Pharmacol Res 2011; 64:438-55. [DOI: 10.1016/j.phrs.2011.07.004] [Citation(s) in RCA: 207] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 07/11/2011] [Indexed: 12/20/2022]
|
29
|
Lin Y, Vermeer MA, Bos W, van Buren L, Schuurbiers E, Miret-Catalan S, Trautwein EA. Molecular structures of citrus flavonoids determine their effects on lipid metabolism in HepG2 cells by primarily suppressing apoB secretion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:4496-4503. [PMID: 21425871 DOI: 10.1021/jf1044475] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This study investigated the underlying mechanisms of action for blood lipid lowering effects of citrus flavonoids and their methoxylated analogues (n = 19; dose range: 0-100 μM) in HepG2 cells. Cholesterol (CH) and triglyceride (TG) syntheses were assessed by measuring the incorporation of (14)C-acetate and (14)C-glycerol, respectively, whereas apoB secretion was determined by ELISA. Results show that two polymethoxylated citrus flavonoids (PMFs), tangeretin and nobiletin, potently inhibited apoB secretion (IC(50) = 13 and 29 μM, respectively) and modestly inhibited CH synthesis (IC(50) = 49 and 68 μM) and TG synthesis (IC(50) = 14 and 73 μM), without effecting LDL-receptor activity. Other PMFs (e.g., sinensetin) and non-PMFs (e.g., hesperetin and naringenin) had only weak effects on CH and TG syntheses and apoB secretion (IC(50) > 100 μM). The structure-activity analysis indicated that a fully methoxylated A-ring of the flavonoid structure was associated with a potent inhibitory activity on hepatic apoB secretion. In conclusion, this study using HepG2 cells indicates that citrus flavonoids with a fully methoxylated A-ring may lower blood CH and TG concentrations primarily by suppressing hepatic apoB secretion as a main underlying mode of action.
Collapse
Affiliation(s)
- Yuguang Lin
- Unilever R&D Vlaardingen, Vlaardingen, The Netherlands.
| | | | | | | | | | | | | |
Collapse
|
30
|
Ohte S, Matsuda D, Uchida R, Nonaka K, Masuma R, Ōmura S, Tomoda H. Dinapinones, novel inhibitors of triacylglycerol synthesis in mammalian cells, produced by Penicillium pinophilum FKI-3864. J Antibiot (Tokyo) 2011; 64:489-94. [DOI: 10.1038/ja.2011.32] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
31
|
Identification of diacylglycerol acyltransferase inhibitors from Rosa centifolia petals. Lipids 2011; 46:691-700. [PMID: 21538210 DOI: 10.1007/s11745-011-3559-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Accepted: 03/14/2011] [Indexed: 01/12/2023]
Abstract
Diacylglycerol acyltransferase (DGAT) catalyzes the final step of triacylglycerol (TAG) synthesis, and is considered as a potential target to control hypertriglyceridemia or other metabolic disorders. In this study, we found that the extract of rose petals suppressed TAG synthesis in cultured cells, and that the extract showed DGAT inhibitory action in a dose-dependent manner. Fractionation of the rose extract revealed that the DGAT inhibitory substances in the extract were ellagitannins; among them rugosin B, and D, and eusupinin A inhibited DGAT activity by 96, 82, and 84% respectively, at 10 μM. These substances did not inhibit the activities of other hepatic microsomal enzymes, glucose-6-phosphatase and HMG-CoA reductase, or pancreatic lipase, suggesting that ellagitannins inhibit DGAT preferentially. In an oral fat load test using mice, postprandial plasma TAG increase was suppressed by rose extract; TAG levels 2 h after the fat load were significantly lower in mice administered a fat emulsion containing rose extract than in control mice (446.3 ± 33.1 vs 345.3 ± 25.0 mg/dL, control vs rose extract group; P < 0.05). These results suggest that rose ellagitannins or rose extract could be beneficial in controlling lipid metabolism and used to improve metabolic disorders.
Collapse
|
32
|
Wang X, Xia H, Xing F, Deng G, Shen Q, Zeng S. A highly sensitive and robust UPLC–MS with electrospray ionization method for quantitation of taxifolin in rat plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:1778-86. [DOI: 10.1016/j.jchromb.2009.04.037] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Revised: 04/20/2009] [Accepted: 04/26/2009] [Indexed: 11/25/2022]
|
33
|
Abstract
PURPOSE OF REVIEW Microsomal triglyceride transfer protein (MTP), a chaperone for the biosynthesis of apolipoprotein B lipoproteins and CD1d, is a therapeutic candidate to decrease plasma lipids and to diminish inflammation. MTP inhibition increases plasma transaminases and tissue lipids, and therefore new approaches are needed to avoid them. RECENT FINDINGS Inositol requiring enzyme1beta has been identified as a novel intestine-specific regulator of MTP. A new function of MTP in cholesterol ester biosynthesis has been reported. The importance of the phospholipid transfer activity of MTP in the lipidation of apolipoprotein B and CD1d has been indicated. Diurnal variations in MTP expression and its induction by food availability have been observed. On the basis of these and other findings, we propose that upregulation of inositol requiring enzyme 1beta, a combined reduction of cellular free cholesterol or triglyceride or both and MTP activity, specific inhibition of phospholipid or triglyceride transfer activities, and targeting of apolipoprotein B-MTP protein-protein interactions might be pursued to avoid some of the side effects associated with the inhibition of triglyceride transfer activity of MTP. We further speculate that short-lived MTP antagonists may be useful in controlling plasma and tissue lipids and in avoiding steatosis. SUMMARY We have highlighted the importance of addressing the causal relationship between MTP inhibition and aberrant elevations in plasma liver enzymes. The proposed approaches may show that MTP targeting is a viable approach to lower plasma lipids.
Collapse
Affiliation(s)
- Mohammed Mahmood Hussain
- Departments of Anatomy and Cell Biology, and Pediatrics, SUNY Downstate Medical Center, Brooklyn, New York 11203, USA.
| | | |
Collapse
|
34
|
Hubbard BK, Enyedy I, Gilmore TA, Serrano-Wu MH. Antisense and small-molecule modulation of diacylglycerol acyltransferase. Expert Opin Ther Pat 2007. [DOI: 10.1517/13543776.17.11.1331] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
35
|
Maiyoh GK, Kuh JE, Casaschi A, Theriault AG. Cruciferous indole-3-carbinol inhibits apolipoprotein B secretion in HepG2 cells. J Nutr 2007; 137:2185-9. [PMID: 17884995 DOI: 10.1093/jn/137.10.2185] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The cardioprotective effect of consuming cruciferous vegetables may be attributed to a number of unique indole-based compounds. We investigated the potential role and mechanism of action of an indole-based compound, indole-3-carbinol (I-3-C), on apolipoprotein B-100 (apoB) production using HepG2 cells. I-3-C reduced apoB secretion into the media dose dependently by 56% at 100 micromol/L. Relative to the untreated control cells, no change in the density of the secreted lipoproteins was noted. Significant decreases in cellular lipid synthesis, including triglycerides (TG) and cholesterol esters (CE), were observed in cells treated with I-3-C, indicating that limited lipid availability is a major factor in the regulation of apoB secretion. The decrease in TG synthesis was associated with significantly decreased diacylglycerol acyltransferase-1 and -2 activity and reduced fatty acid synthase (FASN) gene expression. The decreased CE synthesis was associated with significantly decreased acyl CoA:cholesterol acyltransferase gene expression and activity. The effect on FASN was shown to be mediated by sterol regulatory element binding protein-1, an important transcription factor involved in fatty acid synthesis. Further investigative work revealed that LDL uptake and fatty acid oxidation were not involved in the I-3-C-mediated reduction of apoB secretion. The results indicate that plant indoles have beneficial effects on lipid synthesis that could contribute to their potential cardioprotective effect.
Collapse
Affiliation(s)
- Geoffrey K Maiyoh
- Division of Medical Technology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
| | | | | | | |
Collapse
|
36
|
Tomoda H, Omura S. Potential therapeutics for obesity and atherosclerosis: Inhibitors of neutral lipid metabolism from microorganisms. Pharmacol Ther 2007; 115:375-89. [PMID: 17614133 DOI: 10.1016/j.pharmthera.2007.05.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2007] [Accepted: 05/16/2007] [Indexed: 11/24/2022]
Abstract
Diacylglycerol acyltransferase (DGAT) and acyl-CoA: cholesterol acyltransferase (ACAT) are the enzymes that catalyze the final reactions of triacylgycerol (TG) and cholesteryl ester (CE) synthesis, and accumulation of TG and CE in adipocytes and arteries causes obesity and atherosclerosis, respectively. Therefore, DGAT and ACAT have been viewed as potential therapeutic targets for these diseases. From the screening program for DGAT inhibitors, new compounds were discovered from fungal and plant extracts, and are expected to provide leads for drug development. From the screening programs for ACAT inhibitors and lipid droplet synthesis inhibitors, new compounds with chemical structures different from those of known synthetic inhibitors were discovered from the cultures of fungal and actinomycete strains. Among them, fungal beauveriolide III rather selectively inhibited ACAT1 isozyme, while fungal pyripyropene A was found to be a highly selective inhibitor of ACAT2 isozyme. Both inhibitors proved orally active in in vivo models. Furthermore, a library of beauveriolide and pyripyropene analogs was prepared by combinatorial and semisynthetic methods, respectively. The future prospects of these inhibitors are discussed.
Collapse
|
37
|
Peluso MR. Flavonoids attenuate cardiovascular disease, inhibit phosphodiesterase, and modulate lipid homeostasis in adipose tissue and liver. Exp Biol Med (Maywood) 2006; 231:1287-99. [PMID: 16946397 DOI: 10.1177/153537020623100802] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Plant flavonoids are widely distributed polyphenolic compounds of the human diet. They consist of six major classes based on specific structural differences: flavonols, flavones, flavanones, catechins, anthocyanidins, and isoflavones. All of the major classes of flavonoids are comprised of three six-membered rings: an aromatic A-ring fused to a heterocyclic C-ring that is attached through a single carbon-carbon bond to an aromatic Bring. Population studies have shown that flavonoid intake is inversely correlated with mortality from cardiovascular disease, and numerous flavonoids of dietary significance have been shown to beneficially impact parameters associated with atherosclerosis, including lipoprotein oxidation, blood platelet aggregation, and vascular reactivity. Therapeutic effects of flavonoids on platelet aggregability and blood pressure have been attributed to competitive inhibition of cyclic nucleotide phosphodiesterase (PDE), an elevation in cAMP level, and subsequent activation of protein kinase A (cAMP-dependent protein kinase). In addition, flavonoids may induce neutral lipid hydrolysis from lipid stores through PDE inhibition in adipose tissue and liver. Indeed, the three-dimensional structure of many flavonoids is sterically and electrostatically compatible with the catalytic site of cAMP PDE3 and PDE4. Flavonoids have also been reported to suppress pathways of lipid biosynthesis and of very low-density lipoprotein production in cultured hepatocytes. Continued studies of the biochemical mechanisms underlying the biological effects of plant flavonoids may uncover new strategies for the treatment of cardiovascular disease, as well as associated conditions such as obesity, hepatic steatosis, and Type 2 diabetes.
Collapse
|
38
|
Nerurkar PV, Lee YK, Linden EH, Lim S, Pearson L, Frank J, Nerurkar VR. Lipid lowering effects of Momordica charantia (Bitter Melon) in HIV-1-protease inhibitor-treated human hepatoma cells, HepG2. Br J Pharmacol 2006; 148:1156-64. [PMID: 16847441 PMCID: PMC1752016 DOI: 10.1038/sj.bjp.0706821] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
1. Hyperlipidemic effects of HIV-1-protease inhibitors (PI) are associated with increased hepatic production of triglyceride (TG)-rich lipoproteins, rather than lipoprotein clearance. PI are known to increase apolipoprotein B (apoB) secretion, apoC-III mRNA expression and decrease apoA-1 secretion. Nutritional therapy remains an important strategy to manage PI-associated hyperlipidemia. 2. This study investigated the in vitro efficacy of Asian vegetable, Momordica charantia or bitter melon (BM) to ameliorate PI-associated apoB and lipid abnormalities in HepG2 cells. 3. Our study demonstrates that bitter melon juice (BMJ) significantly reduced apoB secretion and apoC-III mRNA expression and normalized apoA-I expression in PI-treated HepG2 cells. BMJ also significantly reduced cellular TG and microsomal TG transfer protein, suggesting that lipid bioavailability and lipidation of apoB assembly may play a role in decreased apoB secretion. 4. Identifying molecular targets of BM may offer alternative dietary strategies to decrease PI-associated hyperlipidemia and improve quality of life among HIV-1-infected patients.
Collapse
Affiliation(s)
- Pratibha V Nerurkar
- Laboratory of Metabolic Disorders and Alternative Medicine, Department of Molecular Biosciences and Bioengineering, College of Tropical Agriculture and Human Resources, Room 415H, East-West Road, Honolulu, HI 96822, USA.
| | | | | | | | | | | | | |
Collapse
|
39
|
Pauquai T, Bouchoux J, Chateau D, Vidal R, Rousset M, Chambaz J, Demignot S. Adaptation of enterocytic Caco-2 cells to glucose modulates triacylglycerol-rich lipoprotein secretion through triacylglycerol targeting into the endoplasmic reticulum lumen. Biochem J 2006; 395:393-403. [PMID: 16393142 PMCID: PMC1422772 DOI: 10.1042/bj20051359] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2005] [Revised: 12/13/2005] [Accepted: 01/04/2006] [Indexed: 01/18/2023]
Abstract
Enterocytes are responsible for the absorption of dietary lipids, which involves TRL [TG (triacylglycerol)-rich lipoprotein] assembly and secretion. In the present study, we analysed the effect on TRL secretion of Caco-2 enterocyte adaptation to a differential glucose supply. We showed that TG secretion in cells adapted to a low glucose supply for 2 weeks after confluence was double that of control cells maintained in high-glucose-containing medium, whereas the level of TG synthesis remained similar in both conditions. This increased secretion resulted mainly from an enlargement of the mean size of the secreted TRL. The increased TG availability for TRL assembly and secretion was not due to an increase in the MTP (microsomal TG transfer protein) activity that is required for lipid droplet biogenesis in the ER (endoplasmic reticulum) lumen, or to the channelling of absorbed fatty acids towards the monoacylglycerol pathway for TG synthesis. Interestingly, by electron microscopy and subcellular fractionation studies, we observed, in the low glucose condition, an increase in the TG content available for lipoprotein assembly in the ER lumen, with the cytosolic/microsomal TG levels being verapamil-sensitive. Overall, we demonstrate that Caco-2 enterocytes modulate TRL secretion through TG partitioning between the cytosol and the ER lumen according to the glucose supply. Our model will help in identifying the proteins involved in the control of the balance between TRL assembly and cytosolic lipid storage. This mechanism may be a way for enterocytes to regulate TRL secretion after a meal, and thus impact on our understanding of post-prandial hypertriglyceridaemia.
Collapse
Key Words
- apolipoprotein b
- caco-2 cell
- cytosolic lipid droplet
- enterocyte
- lipoprotein secretion
- microsomal triacylglycerol transfer protein (mtp)
- apob, apolipoprotein b
- ba, batyl alcohol
- dgat, diacylglycerol acyltransferase
- dge, diacylglyceryl ether
- dmem, dulbecco's modified eagle's medium
- er, endoplasmic reticulum
- fcs, foetal calf serum
- gpat, glycerolphosphate acyltransferase
- lpc, l-α-lysophosphatidylcholine
- mg, monoacylglycerol
- mgat, mg acyltransferase
- 2-mo, 2-mono-oleoylglycerol
- tg, triacylglycerol
- mtp, microsomal tg transfer protein
- oa, oleic acid
- pdi, protein disulphide-isomerase
- trl, tg-rich lipoprotein
Collapse
Affiliation(s)
- Thomas Pauquai
- UMR 505 INSERM-Université Pierre et Marie Curie and Laboratoire de Pharmacologie Cellulaire de l'Ecole Pratique des Hautes Etudes, Centre de Recherches Biomédicales des Cordeliers, 15 rue de l'Ecole de Médecine, 75006 Paris, France
| | - Julien Bouchoux
- UMR 505 INSERM-Université Pierre et Marie Curie and Laboratoire de Pharmacologie Cellulaire de l'Ecole Pratique des Hautes Etudes, Centre de Recherches Biomédicales des Cordeliers, 15 rue de l'Ecole de Médecine, 75006 Paris, France
| | - Danielle Chateau
- UMR 505 INSERM-Université Pierre et Marie Curie and Laboratoire de Pharmacologie Cellulaire de l'Ecole Pratique des Hautes Etudes, Centre de Recherches Biomédicales des Cordeliers, 15 rue de l'Ecole de Médecine, 75006 Paris, France
| | - Romain Vidal
- UMR 505 INSERM-Université Pierre et Marie Curie and Laboratoire de Pharmacologie Cellulaire de l'Ecole Pratique des Hautes Etudes, Centre de Recherches Biomédicales des Cordeliers, 15 rue de l'Ecole de Médecine, 75006 Paris, France
| | - Monique Rousset
- UMR 505 INSERM-Université Pierre et Marie Curie and Laboratoire de Pharmacologie Cellulaire de l'Ecole Pratique des Hautes Etudes, Centre de Recherches Biomédicales des Cordeliers, 15 rue de l'Ecole de Médecine, 75006 Paris, France
| | - Jean Chambaz
- UMR 505 INSERM-Université Pierre et Marie Curie and Laboratoire de Pharmacologie Cellulaire de l'Ecole Pratique des Hautes Etudes, Centre de Recherches Biomédicales des Cordeliers, 15 rue de l'Ecole de Médecine, 75006 Paris, France
| | - Sylvie Demignot
- UMR 505 INSERM-Université Pierre et Marie Curie and Laboratoire de Pharmacologie Cellulaire de l'Ecole Pratique des Hautes Etudes, Centre de Recherches Biomédicales des Cordeliers, 15 rue de l'Ecole de Médecine, 75006 Paris, France
| |
Collapse
|
40
|
Jiang J, Nilsson-Ehle P, Xu N. Influence of liver cancer on lipid and lipoprotein metabolism. Lipids Health Dis 2006; 5:4. [PMID: 16515689 PMCID: PMC1420303 DOI: 10.1186/1476-511x-5-4] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Accepted: 03/03/2006] [Indexed: 12/13/2022] Open
Abstract
Liver plays a key role in the metabolism of plasma apolipoproteins, endogenous lipids and lipoproteins. Hepatocellular carcinoma (HCC) is one of the most common fatal malignant tumors in China and in other Southeast Asian countries. This has been attributed to the high incidence of hepatitis B infection. Hepatitis B proteins, such as the hepatitis B X protein (HBx) that is large hepatitis B surface protein could regulate transcription of many candidate genes for liver carcinogenesis. It has known that patients who suffered from acute hepatitis B could have lipid disorders such as decreased plasma level of high-density lipoproteins (HDL). Furthermore, aberrations of lipid metabolism are often seen in the chronic hepatitis B infection. Plasma lipid profiles could be changed under HCC. In majority of the reports in HCC, plasma levels of triglycerides (TG), cholesterol, free fatty acids (FFA), HDL, low-density lipoproteins (LDL), lipoprotein (a) (Lp(a)), apolipoprotein AI (apoAI) and apoB were slight to significantly decreased, however, in some cases plasma levels of TG and Lp(a) might be increased. It has been suggested that analysis of plasma levels of lipids, lipoproteins and apolipoproteins in the patients suffered from HCC reflects on the hepatic cellular impairment status. Studies revealed that alterations seen in the plasma levels of lipids, lipoproteins and apolipoproteins reflecting patients' pathologic conditions. Decreased serum levels of cholesterol and apoAI may indicate a poor prognosis. Human leukaemic cells and certain tumor tissues have a higher receptor-mediated uptake of HDL and LDL than the corresponding normal cells or tissues. LDL and HDL have therefore been proposed as a carrier for the water-insoluble anti-cancer agents.
Collapse
Affiliation(s)
- Jingting Jiang
- Section of Clinical Chemistry & Pharmacology, Institute of Laboratory Medicine. Lund University, S-221 85 Lund, Sweden
- Department of Tumor Biological Treatment, The Third Affiliated Hospital, Su Zhou University, Changzhou 213003, China
| | - Peter Nilsson-Ehle
- Section of Clinical Chemistry & Pharmacology, Institute of Laboratory Medicine. Lund University, S-221 85 Lund, Sweden
| | - Ning Xu
- Section of Clinical Chemistry & Pharmacology, Institute of Laboratory Medicine. Lund University, S-221 85 Lund, Sweden
| |
Collapse
|