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Jiao P, Wang Y, Ren G, Chu D, Li Y, Yang Y, Sang T. Urolithin A exerts a protective effect on lipopolysaccharide-induced acute lung injury by regulating HMGB1-mediated MAPK and NF-κB signaling pathways. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:5765-5777. [PMID: 38319388 DOI: 10.1007/s00210-024-02977-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 01/22/2024] [Indexed: 02/07/2024]
Abstract
Acute lung injury (ALI) is a severe inflammatory disorder that has a high morbidity and mortality rate. Urolithin A (UA) is reported to have anti-inflammatory and anti-oxidative effects in ALI. However, its molecular mechanisms in ALI remain to be explored. Mice and BEAS-2B cells were administrated with lipopolysaccharide (LPS) to mimic the ALI model in vivo and in vitro. Hematoxylin-eosin (HE) staining was used to detect the pathological injury of lung tissues. The levels of proinflammatory cytokines in bronchoalveolar lavage fluid (BALF) and culture supernatant and the levels of oxidative stress markers in lung tissues were measured using ELISA. DCFH-DA probe was used to assess the reactive oxygen species (ROS) level. TUNEL staining and flow cytometry were performed to determine cell apoptosis. The key targets and pathways were confirmed by immunohistochemistry (IHC) and western blot. UA suppressed the pathologic damage, wet/dry weight ratio, and total protein and inflammatory cells in BALF. UA decreased neutrophil infiltration and proinflammatory cytokines production. UA reduced the level of malondialdehyde (MDA) and increased the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in pulmonary tissues. UA also inhibited cell apoptosis in lung tissues by decreasing Bax expression and increasing Bcl-2 expression. In addition, UA suppressed LPS-induced inflammatory factor production, ROS level, and cell apoptosis in BEAS-2B. Importantly, UA decreased the expression of HMGB1 in LPS-treated mice and BEAS-2B cells. HMGB1 overexpression greatly abrogated the inhibition of UA on inflammation, ROS, and cell apoptosis in LPS-administrated BEAS-2B. Furthermore, UA treatment suppressed the phosphorylated levels of p38, JNK, ERK, and p65 in LPS-administrated mice and BEAS-2B cells. UA alleviated lung inflammation, oxidative stress, and apoptosis in ALI by targeting HMGB1 to inactivate the MAPK/NF-κB signaling, suggesting the potential of UA to treat ALI.
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Affiliation(s)
- Pengfei Jiao
- Department of General Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Yingrui Wang
- Department of Oncology, The First Affiliated Hospital of Henan University of Chinese Medicine, No. 19 Renmin Road, Jinshui District, Zhengzhou, 450000, China
| | - Gaofei Ren
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Dan Chu
- Department of General Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Yameng Li
- Department of General Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Yingwu Yang
- Department of Nephropathy, Jiren Diabetes Hospital, Ruzhou, 467500, China
| | - Tianqing Sang
- Department of Oncology, The First Affiliated Hospital of Henan University of Chinese Medicine, No. 19 Renmin Road, Jinshui District, Zhengzhou, 450000, China.
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Qadri H, Shah AH, Almilaibary A, Mir MA. Microbiota, natural products, and human health: exploring interactions for therapeutic insights. Front Cell Infect Microbiol 2024; 14:1371312. [PMID: 39035357 PMCID: PMC11257994 DOI: 10.3389/fcimb.2024.1371312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 06/03/2024] [Indexed: 07/23/2024] Open
Abstract
The symbiotic relationship between the human digestive system and its intricate microbiota is a captivating field of study that continues to unfold. Comprising predominantly anaerobic bacteria, this complex microbial ecosystem, teeming with trillions of organisms, plays a crucial role in various physiological processes. Beyond its primary function in breaking down indigestible dietary components, this microbial community significantly influences immune system modulation, central nervous system function, and disease prevention. Despite the strides made in microbiome research, the precise mechanisms underlying how bacterial effector functions impact mammalian and microbiome physiology remain elusive. Unlike the traditional DNA-RNA-protein paradigm, bacteria often communicate through small molecules, underscoring the imperative to identify compounds produced by human-associated bacteria. The gut microbiome emerges as a linchpin in the transformation of natural products, generating metabolites with distinct physiological functions. Unraveling these microbial transformations holds the key to understanding the pharmacological activities and metabolic mechanisms of natural products. Notably, the potential to leverage gut microorganisms for large-scale synthesis of bioactive compounds remains an underexplored frontier with promising implications. This review serves as a synthesis of current knowledge, shedding light on the dynamic interplay between natural products, bacteria, and human health. In doing so, it contributes to our evolving comprehension of microbiome dynamics, opening avenues for innovative applications in medicine and therapeutics. As we delve deeper into this intricate web of interactions, the prospect of harnessing the power of the gut microbiome for transformative medical interventions becomes increasingly tantalizing.
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Affiliation(s)
- Hafsa Qadri
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
| | - Abdul Haseeb Shah
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
| | - Abdullah Almilaibary
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
- Department of Family and Community Medicine, Faculty of Medicine, Al Baha University, Al Bahah, Saudi Arabia
| | - Manzoor Ahmad Mir
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
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Ai J, Tang X, Mao B, Zhang Q, Zhao J, Chen W, Cui S. Gut microbiota: a superior operator for dietary phytochemicals to improve atherosclerosis. Crit Rev Food Sci Nutr 2024:1-23. [PMID: 38940319 DOI: 10.1080/10408398.2024.2369169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Mounting evidence implicates the gut microbiota as a possible key susceptibility factor for atherosclerosis (AS). The employment of dietary phytochemicals that strive to target the gut microbiota has gained scientific support for treating AS. This study conducted a general overview of the links between the gut microbiota and AS, and summarized available evidence that dietary phytochemicals improve AS via manipulating gut microbiota. Then, the microbial metabolism of several dietary phytochemicals was summarized, along with a discussion on the metabolites formed and the biotransformation pathways involving key gut bacteria and enzymes. This study additionally focused on the anti-atherosclerotic potential of representative metabolites from dietary phytochemicals, and investigated their underlying molecular mechanisms. In summary, microbiota-dependent dietary phytochemical therapy is a promising strategy for AS management, and knowledge of "phytochemical-microbiota-biotransformation" may be a breakthrough in the search for novel anti-atherogenic agents.
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Affiliation(s)
- Jian Ai
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xin Tang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Bingyong Mao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Qiuxiang Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, China
| | - Shumao Cui
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
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4
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Wei L, Liu L, Meng Z, Qi K, Gao X, Feng J, Luo J. Recognition of Mycobacterium tuberculosis by macrophage Toll-like receptor and its role in autophagy. Inflamm Res 2024; 73:753-770. [PMID: 38563966 DOI: 10.1007/s00011-024-01864-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 12/25/2023] [Accepted: 02/20/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND The pathogen responsible for tuberculosis is called Mycobacterium tuberculosis. Its interaction with macrophages has a significant impact on the onset and progression of the disease. METHODS The respiratory pathway allows Mycobacterium tuberculosis to enter the body's lungs where it battles immune cells before being infected latently or actively. In the progress of tuberculosis, Mycobacterium tuberculosis activates the body's immune system and creates inflammatory factors, which cause tissue inflammation to infiltrate and the creation of granulomas, which seriously harms the body. Toll-like receptors of macrophage can mediate host recognition of Mycobacterium tuberculosis, initiate immune responses, and participate in macrophage autophagy. New host-directed therapeutic approaches targeting autophagy for drug-resistant Mycobacterium tuberculosis have emerged, providing new ideas for the effective treatment of tuberculosis. CONCLUSIONS In-depth understanding of the mechanisms by which macrophage autophagy interacts with intracellular Mycobacterium tuberculosis, as well as the study of potent and specific autophagy-regulating molecules, will lead to much-needed advances in drug discovery and vaccine design, which will improve the prevention and treatment of human tuberculosis.
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Affiliation(s)
- Linna Wei
- Department of Immunology, Zunyi Medical University, Zunyi, 563000, China
| | - Liping Liu
- Department of Immunology, Zunyi Medical University, Zunyi, 563000, China
| | - Zudi Meng
- Department of Immunology, Zunyi Medical University, Zunyi, 563000, China
| | - Kai Qi
- Department of Immunology, Zunyi Medical University, Zunyi, 563000, China
| | - Xuehan Gao
- Department of Immunology, Zunyi Medical University, Zunyi, 563000, China
| | - Jihong Feng
- Department of Oncology, Lishui People's Hospital, Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, 323000, Zhejiang, China
| | - Junmin Luo
- Department of Immunology, Zunyi Medical University, Zunyi, 563000, China.
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Huang WC, Liou CJ, Shen SC, Hu S, Chao JCJ, Huang CH, Wu SJ. Punicalagin from pomegranate ameliorates TNF-α/IFN-γ-induced inflammatory responses in HaCaT cells via regulation of SIRT1/STAT3 axis and Nrf2/HO-1 signaling pathway. Int Immunopharmacol 2024; 130:111665. [PMID: 38367463 DOI: 10.1016/j.intimp.2024.111665] [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: 10/24/2023] [Revised: 01/29/2024] [Accepted: 02/05/2024] [Indexed: 02/19/2024]
Abstract
Punicalagin (PUN) was isolated from the peel of pomegranate (Punica granatum L.), is a polyphenol with anti-inflammatory, hepatoprotective, and antioxidant activities. However, it remains unclear whether PUN alleviates the inflammation and anti-inflammatory mechanisms in pro-inflammatory cytokines-induced human keratinocyte HaCaT cells. Here, we investigated that tumor necrosis factor-alpha (TNF-α) and interferon-gamma (IFN-γ) mixture-stimulated HaCaT cells were treated with various concentrations of PUN, followed by analyzed the expression of inflammation-related mediators and evaluate anti-inflammatory-related pathways. Our results demonstrated that PUN ≤ 100 μM did not reduce HaCaT cell viability, and PUN ≥ 3 μM was sufficient to decrease interleukin-6 (IL-6), IL-8, monocyte chemoattractant protein-1 (MCP-1), chemokine ligand 5 (CCL5), CCL17 and CCL20 concentrations. We found that PUN ≥ 10 μM and ≥ 3 μM significantly increased sirtuin 1 (SIRT1) expression and inhibited signal transducer and activator of transcription 3 (STAT3) phosphorylation, respectively. PUN downregulated inflammation-related proteins cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS), enhanced nuclear factor erythroid-2-related factor-2 (Nrf2) and heme oxygenase-1 (HO-1) expression. Moreover, PUN decreased intercellular adhesion molecule-1 (ICAM-1) expression and inhibited monocyte adhesion to inflamed HaCaT cells. PUN also suppressed inflammatory-related pathways, including mitogen-activated protein kinase (MAPK) and nuclear factor-kappa B (NF-κB) signaling pathways in TNF-α/IFN-γ- stimulated HaCat cells. Collectively, there is significant evidence that PUN has effective protective defenses against TNF-α/IFN-γ-induced skin inflammation by enhancing SIRT1 to mediate STAT3 and Nrf2/HO-1 signaling pathway.
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Affiliation(s)
- Wen-Chung Huang
- Graduate Institute of Health Industry Technology, Research Center for Food and Cosmetic Safety, Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City 33303, Taiwan, ROC; Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taoyuan City 33303, Taiwan, ROC
| | - Chian-Jiun Liou
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taoyuan City 33303, Taiwan, ROC; Department of Nursing, Division of Basic Medical Sciences, Research Center for Food and Cosmetic Safety, and Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan City 33303, Taiwan, ROC
| | - Szu-Chuan Shen
- Graduate Program of Nutrition Science, National Taiwan Normal University, 88 Ting-Chow Rd, Sec 4, Taipei 11677, Taiwan, ROC
| | - Sindy Hu
- Department of Cosmetic Science, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City, Taiwan, ROC; Department of Dermatology, Aesthetic Medical Center, Chang Gung Memorial Hospital, Taoyuan City, Taiwan, ROC
| | - Jane C-J Chao
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan, ROC
| | - Chun-Hsun Huang
- Department of Cosmetic Science, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City, Taiwan, ROC; Department of Dermatology, Aesthetic Medical Center, Chang Gung Memorial Hospital, Taoyuan City, Taiwan, ROC
| | - Shu-Ju Wu
- Department of Dermatology, Aesthetic Medical Center, Chang Gung Memorial Hospital, Taoyuan City, Taiwan, ROC; Department of Nutrition and Health Sciences, Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan City, Taiwan, ROC.
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6
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Bryan EE, Bode NM, Chen X, Burris ES, Johnson DC, Dilger RN, Dilger AC. The effect of chronic, non-pathogenic maternal immune activation on offspring postnatal muscle and immune outcomes. J Anim Sci 2024; 102:skad424. [PMID: 38189595 PMCID: PMC10794819 DOI: 10.1093/jas/skad424] [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: 08/29/2023] [Accepted: 01/03/2024] [Indexed: 01/09/2024] Open
Abstract
The objective was to determine the effects of maternal inflammation on offspring muscle development and postnatal innate immune response. Sixteen first-parity gilts were randomly allotted to repeated intravenous injections with lipopolysaccharide (LPS; n = 8, treatment code INFLAM) or comparable volume of phosphate buffered saline (CON, n = 8). Injections took place every other day from gestational day (GD) 70 to GD 84 with an initial dose of 10 μg LPS/kg body weight (BW) increasing by 12% each time to prevent endotoxin tolerance. On GD 70, 76, and 84, blood was collected at 0 and 4 h postinjection via jugular or ear venipuncture to determine tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-1β concentrations. After farrowing, litter mortality was recorded, and the pig closest to litter BW average was used for dissection and muscle fiber characterization. On weaning (postnatal day [PND] 21), pigs were weighed individually and 2 barrows closest to litter BW average were selected for another study. The third barrow closest to litter BW average was selected for the postnatal LPS challenge. On PND 52, pigs were given 5 μg LPS/kg BW via intraperitoneal injection, and blood was collected at 0, 4, and 8 h postinjection to determine TNF-α concentration. INFLAM gilt TNF-α concentration increased (P < 0.01) 4 h postinjection compared to 0 h postinjection, while CON gilt TNF-α concentration did not differ between time points. INFLAM gilt IL-6 and IL-1β concentrations increased (P = 0.03) 4 h postinjection compared to 0 h postinjection on GD 70, but did not differ between time points on GD 76 and 84. There were no differences between INFLAM and CON gilts litter mortality outcomes (P ≥ 0.13), but INFLAM pigs were smaller (P = 0.04) at birth and tended (P = 0.09) to be smaller at weaning. Muscle and organ weights did not differ (P ≥ 0.17) between treatments, with the exception of semitendinosus, which was smaller (P < 0.01) in INFLAM pigs. INFLAM pigs tended (P = 0.06) to have larger type I fibers. INFLAM pig TNF-α concentration did not differ across time, while CON pig TNF-α concentration peaked (P = 0.01) 4 h postinjection. TNF-α concentration did not differ between treatments at 0 and 8 h postinjection, but CON pigs had increased (P = 0.01) TNF-α compared to INFLAM pigs 4 h postinjection. Overall, maternal immune activation did not alter pig muscle development, but resulted in suppressed innate immune activation.
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Affiliation(s)
- Erin E Bryan
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Nick M Bode
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Xuenan Chen
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Elli S Burris
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Danielle C Johnson
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Ryan N Dilger
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
| | - Anna C Dilger
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61802, USA
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Jin Y, Yi C. Corilagin attenuates airway inflammation and collagen deposition in ovalbumin-induced asthmatic mice. Allergol Immunopathol (Madr) 2023; 51:97-103. [PMID: 37937502 DOI: 10.15586/aei.v51i6.988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/09/2023] [Indexed: 11/09/2023]
Abstract
OBJECTIVE To investigate the effects of corilagin on inflammation and collagen deposition in ovalbumin (OVA)-induced asthma mouse model and uncover the mechanism. METHODS We constructed a mouse model of OVA-induced asthma. Enzyme-linked-immunosorbent serologic assays were conducted to detect the effects of corilagin on cytokines and Immunoglobulin E (IgE) production. Hematoxylin and eosin staining was used to show pathological features in lung tissues. Masson trichrome assay was used to examine collagen deposition. In addition, the lung function was detected by mouse lung function apparatus. Immunoblot was used to confirm the mechanism. RESULTS Corilagin alleviates OVA-induced cytokine and IgE production. In addition, corilagin alleviates OVA-induced pathological changes and collagen deposition in lung tissues. Corilagin also suppressed airway resistance and lung function in mice. Mechanically, corilagin activated the adenosine monophosphate-activated protein kinase (AMPK) pathway in lung tissues. CONCLUSION Corilagin attenuates airway inflammation and collagen deposition in OVA-induced asthmatic mice via AMPK pathway.
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Affiliation(s)
- Yan Jin
- Department of Emergency Internal Medicine, the Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu, China
| | - Chunhua Yi
- Department of Emergency Internal Medicine, the Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu, China;
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8
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Hu J, Liu R, Yang Z, Pan X, Li Y, Gong Y, Guo D. Praeruptorin A inhibits the activation of NF-κB pathway and the expressions of inflammatory factors in poly (I:C)-induced RAW264.7 cells. Chem Biol Drug Des 2023; 102:1110-1120. [PMID: 37500542 DOI: 10.1111/cbdd.14310] [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: 03/29/2023] [Revised: 07/03/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023]
Abstract
Praeruptorin A (PA), a natural coumarin compound, has significant anti-inflammatory effects. In this study, we evaluate the anti-inflammatory effect of PA on RAW 264.7 mouse macrophages induced by Polyinosinic acid-polycytidylic acid (poly (I:C)). RAW 264.7 mouse macrophages induced by poly (I:C) were treated with or without PA, the viability of which was determined to screen working solution of PA. RNA-sequencing was applied to analyze the differentially expressed genes (DEGs). Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis were carried out. The expressions of interleukin (IL)-1β, heme oxygenase 1 (HMOX1), prostaglandin-endoperoxide synthase 2 (PTGS2), ATP binding cassette subfamily A member 1 (Abca1) and NF-κB-related proteins were measured by enzyme-linked immunosorbent assay (ELISA), quantitative reverse transcription polymerase chain reaction (qRT-PCR) and western blot. As a result, PA at 1, 2, 3, 4 and 5 μM slightly affected cell viability, while PA at 6 and 7 μM significantly inhibited cell viability. GO and KEGG analysis results revealed that DEGs were mainly enriched in the pathways related to inflammatory signaling. Through further analysis, we obtained five possible targets of PA, and verified that PA inhibited the expressions of IL-1β, HMOX1, PTGS2 and Abca1 as well as the activation of NF-κB pathway in poly (I:C)-induced RAW264.7 cells. To summarize, PA may inhibit expressions of the inflammation-related genes in poly (I:C)-induced RAW264.7 cells, which demonstrates its potential as a drug against virus related diseases.
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Affiliation(s)
- Jiayan Hu
- School of Medicine, Hangzhou City University, Hangzhou, China
| | - Roujun Liu
- School of Medicine, Hangzhou City University, Hangzhou, China
| | - Zhouxin Yang
- Laboratory of Critical Care Medicine, Zhejiang Hospital, Hangzhou, China
| | - Xinyu Pan
- School of Medicine, Hangzhou City University, Hangzhou, China
| | - Yuanjing Li
- School of Medicine, Hangzhou City University, Hangzhou, China
| | - Yanghui Gong
- School of Medicine, Hangzhou City University, Hangzhou, China
| | - Dongyang Guo
- School of Medicine, Hangzhou City University, Hangzhou, China
- Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province, Hangzhou City University, Hangzhou, China
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Zhao H, Song G, Zhu H, Qian H, Pan X, Song X, Xie Y, Liu C. Pharmacological Effects of Urolithin A and Its Role in Muscle Health and Performance: Current Knowledge and Prospects. Nutrients 2023; 15:4441. [PMID: 37892516 PMCID: PMC10609777 DOI: 10.3390/nu15204441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/10/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Urolithin A (UA) is a naturally occurring compound derived from the metabolism of gut microbiota, which has attracted considerable research attention due to its pharmacological effects and potential implications in muscle health and performance. Recent studies have demonstrated that Urolithin A exhibits diverse biological activities, encompassing anti-inflammatory, antioxidant, anti-tumor, and anti-aging properties. In terms of muscle health, accumulating evidence suggests that Urolithin A may promote muscle protein synthesis and muscle growth through various pathways, offering promise in mitigating muscle atrophy. Moreover, Urolithin A exhibits the potential to enhance muscle health and performance by improving mitochondrial function and regulating autophagy. Nonetheless, further comprehensive investigations are still warranted to elucidate the underlying mechanisms of Urolithin A and to assess its feasibility and safety in human subjects, thereby advancing its potential applications in the realms of muscle health and performance.
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Affiliation(s)
- Haotian Zhao
- Department of Physical Education, Jiangnan University, Wuxi 214122, China;
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (H.Z.); (H.Q.)
| | - Ge Song
- School of Sport Science, Beijing Sport University, Beijing 100084, China; (G.S.); (X.P.)
| | - Hongkang Zhu
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (H.Z.); (H.Q.)
| | - He Qian
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (H.Z.); (H.Q.)
| | - Xinliang Pan
- School of Sport Science, Beijing Sport University, Beijing 100084, China; (G.S.); (X.P.)
| | - Xiaoneng Song
- Department of Physical Education, Jiangnan University, Wuxi 214122, China;
| | - Yijie Xie
- Affiliated Hospital of Jiangnan University, Wuxi 214062, China
| | - Chang Liu
- School of Sport Science, Beijing Sport University, Beijing 100084, China; (G.S.); (X.P.)
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Li J, Liao R, Zhang S, Weng H, Liu Y, Tao T, Yu F, Li G, Wu J. Promising remedies for cardiovascular disease: Natural polyphenol ellagic acid and its metabolite urolithins. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 116:154867. [PMID: 37257327 DOI: 10.1016/j.phymed.2023.154867] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/17/2023] [Accepted: 05/08/2023] [Indexed: 06/02/2023]
Abstract
BACKGROUND Cardiovascular disease (CVD) is a significant worldwide factor contributing to human fatality and morbidity. With the increase of incidence rates, it is of concern that there is a lack of current therapeutic alternatives because of multiple side effects. Ellagic acid (EA), the natural polyphenol (C14H6O8), is abundant in pomegranates, berries, and nuts. EA and its intestinal microflora metabolite, urolithins, have recently attracted much attention as a potential novel "medicine" because of their wide pharmacological properties. PURPOSE This study aimed to critically analyze available literature to summarize the beneficial effects of EA and urolithins, and highlights their druggability and therapeutic potential in various CVDs. METHODS We systematically studied research and review articles between 1984 and 2022 available on various databases to obtain the data on EA and urolithins with no language restriction. Their cardiovascular protective activities, underlying mechanism, and druggability were highlighted and discussed comprehensively. RESULTS We found that EA and urolithins may exert preventive and curative effects on CVD with negligible side effects and possibly regulate lipid metabolism imbalance, pro-inflammatory factor production, vascular smooth muscle cell proliferation, cardiomyocyte apoptosis, endothelial cell dysfunction, and Ca2+ intake and release. Potentially, this may lead to the prevention and amelioration of atherosclerosis, hypertension, myocardial infarction, cardiac fibrosis, cardiomyopathy, cardiac arrhythmias, and cardiotoxicities in vivo. Several molecules and signaling pathways are associated with their therapeutic actions, including phosphatidylinositol 3-kinase/protein kinase B, mitogen-activated protein kinase, NF-κB, nuclear factor erythroid-2 related factor 2, sirtuin1, miRNA, and extracellular signal-regulated kinase 1/2. CONCLUSION In vitro and in vivo studies shows that EA and urolithins could be used as valid candidates for early prevention and effective therapeutic strategies for various CVDs.
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Affiliation(s)
- Jingyan Li
- Cardiovascular Surgery Department, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China; Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China; Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention of Cardiovascular Diseases, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, China
| | - Ruixue Liao
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Shijia Zhang
- School of Pharmacy, Xuzhou Medical University, Xuzhou 221000, China
| | - Huimin Weng
- Cardiovascular Surgery Department, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Yuanzhi Liu
- Cardiovascular Surgery Department, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China; Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Tianyi Tao
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention of Cardiovascular Diseases, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, China
| | - Fengxu Yu
- Cardiovascular Surgery Department, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
| | - Guang Li
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention of Cardiovascular Diseases, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, China.
| | - Jianming Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drugability Evaluation, Luzhou Key Laboratory of Activity Screening and Drugability Evaluation for Chinese Materia Medica, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China; School of Basic Medical Sciences, Southwest Medical University, Luzhou, China.
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11
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Ma M, Wang Y, Fan S, Huang Y, Su X, Lu C. Urolithin A Alleviates Colitis in Mice by Improving Gut Microbiota Dysbiosis, Modulating Microbial Tryptophan Metabolism, and Triggering AhR Activation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7710-7722. [PMID: 37167350 DOI: 10.1021/acs.jafc.3c00830] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Urolithin A (UroA) is a microbial metabolite derived from ellagitannins and ellagic acid with good bioavailability. In this study, we explored the anticolitis activity of UroA and clarified the mechanism by 16S rDNA sequencing and metabonomics. UroA alleviated dextran sulfate sodium (DSS)-induced colitis in mice, characterized by a decreased disease activity index, increased colon length, and improved colonic histopathological lesions, along with inhibited phosphorylation of the mitogen-activated protein kinase signaling pathway. In addition, UroA improved gut microbiota dysbiosis and modulated the microbiota metabolome. Furthermore, targeted metabolomics focused on tryptophan catabolites showed that UroA significantly increased the production of indole-3-aldehyde (IAld) and subsequently led to increased colonic expression of aryl hydrocarbon receptor (AhR) and promoted the serum content of IL-22 in mice with colitis. Collectively, our data identified a novel anticolitis mechanism of UroA by improving gut microbiota dysbiosis, modulating microbial tryptophan metabolism, promoting IAld production, and triggering AhR/IL-22 axis activation. However, a limitation noted in this study is that these beneficial effects of UroA were found at 50 μM in vitro and 20 mg/kg in vivo, which were nonphysiological concentrations.
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Affiliation(s)
- Mingxia Ma
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo City 315211, China
- School of Marine Science, Ningbo University, Ningbo City 315832, China
| | - Yanxin Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo City 315211, China
- School of Marine Science, Ningbo University, Ningbo City 315832, China
| | - Siqing Fan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo City 315211, China
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo City 315832, China
| | - Yumeng Huang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo City 315211, China
- School of Marine Science, Ningbo University, Ningbo City 315832, China
| | - Xiurong Su
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo City 315211, China
- School of Marine Science, Ningbo University, Ningbo City 315832, China
| | - Chenyang Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo City 315211, China
- School of Marine Science, Ningbo University, Ningbo City 315832, China
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12
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Olędzka AJ, Czerwińska ME. Role of Plant-Derived Compounds in the Molecular Pathways Related to Inflammation. Int J Mol Sci 2023; 24:ijms24054666. [PMID: 36902097 PMCID: PMC10003729 DOI: 10.3390/ijms24054666] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 03/04/2023] Open
Abstract
Inflammation is the primary response to infection and injury. Its beneficial effect is an immediate resolution of the pathophysiological event. However, sustained production of inflammatory mediators such as reactive oxygen species and cytokines may cause alterations in DNA integrity and lead to malignant cell transformation and cancer. More attention has recently been paid to pyroptosis, which is an inflammatory necrosis that activates inflammasomes and the secretion of cytokines. Taking into consideration that phenolic compounds are widely available in diet and medicinal plants, their role in the prevention and support of the treatment of chronic diseases is apparent. Recently, much attention has been paid to explaining the significance of isolated compounds in the molecular pathways related to inflammation. Therefore, this review aimed to screen reports concerning the molecular mode of action assigned to phenolic compounds. The most representative compounds from the classes of flavonoids, tannins, phenolic acids, and phenolic glycosides were selected for this review. Our attention was focused mainly on nuclear factor-κB (NF-κB), nuclear factor erythroid 2-related factor 2 (Nrf2), and mitogen-activated protein kinase (MAPK) signaling pathways. Literature searching was performed using Scopus, PubMed, and Medline databases. In conclusion, based on the available literature, phenolic compounds regulate NF-κB, Nrf2, and MAPK signaling, which supports their potential role in chronic inflammatory disorders, including osteoarthritis, neurodegenerative diseases, cardiovascular, and pulmonary disorders.
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Affiliation(s)
- Agata J. Olędzka
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Str., 02-097 Warsaw, Poland
- Centre for Preclinical Research, Medical University of Warsaw, 1B Banacha Str., 02-097 Warsaw, Poland
| | - Monika E. Czerwińska
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Str., 02-097 Warsaw, Poland
- Centre for Preclinical Research, Medical University of Warsaw, 1B Banacha Str., 02-097 Warsaw, Poland
- Correspondence: ; Tel.: +48-22-116-61-85
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13
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Ju C, Ma Y, Zuo X, Wang X, Song Z, Zhang Z, Zhu Z, Li X, Liang Z, Ding T, Hu X, Wang Z. Photobiomodulation promotes spinal cord injury repair by inhibiting macrophage polarization through lncRNA TUG1-miR-1192/TLR3 axis. Cell Mol Biol Lett 2023; 28:5. [PMID: 36658478 PMCID: PMC9854040 DOI: 10.1186/s11658-023-00417-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/05/2023] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Secondary spinal cord injury (SCI) often causes the aggravation of inflammatory reaction and nerve injury, which affects the recovery of motor function. Bone-marrow-derived macrophages (BMDMs) were recruited to the injured area after SCI, and the M1 polarization is the key process for inducing inflammatory response and neuronal apoptosis. We previously showed that photobiomodulation (PBM) can inhibit the polarization of M1 phenotype of BMDMs and reduce inflammation, but the underlying mechanisms are unclear. The purpose of this study is to explore the potential target and mechanism of PBM in treating SCI. METHODS Transcriptome sequencing and bioinformatics analysis showed that long noncoding RNA taurine upregulated gene 1 (lncRNA TUG1) was a potential target of PBM. The expression and specific mechanism of lncRNA TUG1 were detected by qPCR, immunofluorescence, flow cytometry, western blotting, fluorescence in situ hybridization, and luciferase assay. The Basso mouse scale (BMS) and gait analysis were used to evaluate the recovery of motor function in mice. RESULTS Results showed that lncRNA TUG1 may be a potential target of PBM, regulating the polarization of BMDMs, inflammatory response, and the axial growth of DRG. Mechanistically, TUG1 competed with TLR3 for binding to miR-1192 and attenuated the inhibitory effect of miR-1192 on TLR3. This effect protected TLR3 from degradation, enabling the high expression of TLR3, which promoted the activation of downstream NF-κB signal and the release of inflammatory cytokines. In vivo, PBM treatment could reduce the expression of TUG1, TLR3, and inflammatory cytokines and promoted nerve survival and motor function recovery in SCI mice. CONCLUSIONS Our study clarified that the lncRNA TUG1/miR-1192/TLR3 axis is an important pathway for PBM to inhibit M1 macrophage polarization and inflammation, which provides theoretical support for its clinical application in patients with SCI.
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Affiliation(s)
- Cheng Ju
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Yangguang Ma
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Xiaoshuang Zuo
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Xuankang Wang
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Zhiwen Song
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Zhihao Zhang
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Zhijie Zhu
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Xin Li
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Zhuowen Liang
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Tan Ding
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Xueyu Hu
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
| | - Zhe Wang
- grid.233520.50000 0004 1761 4404Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Changle West Road No. 127, Xi’an, 710032 Shaanxi China
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14
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Surya Prakash Rao H, Prabakaran M, Muthanna N. New method for synthesis of 7-hydroxydibenzopyran-6-ones: Benzannulation of coumarins by three-component condensation. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Zhao Y, Zhong X, Yan J, Sun C, Zhao X, Wang X. Potential roles of gut microbes in biotransformation of natural products: An overview. Front Microbiol 2022; 13:956378. [PMID: 36246222 PMCID: PMC9560768 DOI: 10.3389/fmicb.2022.956378] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/29/2022] [Indexed: 11/23/2022] Open
Abstract
Natural products have been extensively applied in clinical practice, characterized by multi-component and multi-target, many pharmacodynamic substances, complex action mechanisms, and various physiological activities. For the oral administration of natural products, the gut microbiota and clinical efficacy are closely related, but this relationship remains unclear. Gut microbes play an important role in the transformation and utilization of natural products caused by the diversity of enzyme systems. Effective components such as flavonoids, alkaloids, lignans, and phenols cannot be metabolized directly through human digestive enzymes but can be transformed by enzymes produced by gut microorganisms and then utilized. Therefore, the focus is paid to the metabolism of natural products through the gut microbiota. In the present study, we systematically reviewed the studies about gut microbiota and their effect on the biotransformation of various components of natural products and highlighted the involved common bacteria, reaction types, pharmacological actions, and research methods. This study aims to provide theoretical support for the clinical application in the prevention and treatment of diseases and provide new ideas for studying natural products based on gut biotransformation.
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Affiliation(s)
- Yucui Zhao
- Ministry of Education Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xinqin Zhong
- Ministry of Education Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Junyuan Yan
- Ministry of Education Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Congying Sun
- Ministry of Education Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xin Zhao
- Ministry of Education Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- *Correspondence: Xin Zhao,
| | - Xiaoying Wang
- Ministry of Education Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Xiaoying Wang,
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16
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Surya Prakash Rao H, Prabakaran M, Muthanna N. Synthesis of 7-hydroxydibenzopyran-6-ones via benzannulation of coumarins. Org Biomol Chem 2022; 20:6905-6914. [PMID: 35975610 DOI: 10.1039/d2ob01203k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have successfully demonstrated a facile synthesis of a variety of 7-hydroxydibenzopyran-6-ones via a two-step protocol from 3-acylcoumarins having a latent Nazarov dienone functionality. Condensation of 3-acylcoumarins and ethyl cyanoacetate under basic (wet K2CO3) and microwave irradiation conditions followed by decarboethoxylative aromatization with Br2 or DDQ furnished dibenzopyran-6-ones in high yields. The formation of ring C of the dibenzopyran-6-one motif critically depended on an active methylene compound and C7 substitution on coumarins. The Ar-Br or ArOTf substitution in dibenzopyran-6-ones was leveraged for the palladium-catalysed Suzuki coupling with diverse aryl boronic acids to increase the structural diversity. Reductive decyanation of C10 cyano dibenzopyran-6-ones furnished some of the isomers of urolithin A.
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Affiliation(s)
- H Surya Prakash Rao
- Department of Chemistry, Pondicherry University, Pondicherry - 605 014, India. .,Vasista Pharma Chem Pvt Limited, Gajularamaram, Hyderabad - 500 090, India
| | - M Prabakaran
- Department of Chemistry, Pondicherry University, Pondicherry - 605 014, India.
| | - Nandurka Muthanna
- Department of Chemistry, Pondicherry University, Pondicherry - 605 014, India.
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