1
|
Ji X, Chen Z, Lin W, Wu Q, Wu Y, Hong Y, Tong H, Wang C, Zhang Y. Esculin induces endoplasmic reticulum stress and drives apoptosis and ferroptosis in colorectal cancer via PERK regulating eIF2α/CHOP and Nrf2/HO-1 cascades. J Ethnopharmacol 2024; 328:118139. [PMID: 38561058 DOI: 10.1016/j.jep.2024.118139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cortex fraxini (also known as Qinpi), the bark of Fraxinus rhynchophylla Hance and Fraxinus stylosa Lingelsh, constitutes a crucial component in several traditional Chinese formulas (e.g., Baitouweng Tang, Jinxiao Formula, etc.) and has demonstrated efficacy in alleviating intestinal carbuncle and managing diarrhea. Cortex fraxini has demonstrated commendable anticancer activity in the realm of Chinese ethnopharmacology; nevertheless, the underlying mechanisms against colorectal cancer (CRC) remain elusive. AIM OF THE STUDY Esculin, an essential bioactive compound derived from cortex fraxini, has recently garnered attention for its ability to impede viability and induce apoptosis in cancer cells. This investigation aims to assess the therapeutic potential of esculin in treating CRC and elucidate the underlying mechanisms. MATERIALS AND METHODS The impact of esculin on CRC cell viability was assessed using CCK-8 assay, Annexin V/PI staining, and Western blotting. Various cell death inhibitors, along with DCFH-DA, ELISA, biochemical analysis, and Western blotting, were employed to delineate the modes through which esculin induces HCT116 cells death. Inhibitors and siRNA knockdown were utilized to analyze the signaling pathways influenced by esculin. Additionally, an azomethane/dextran sulfate sodium (AOM/DSS)-induced in vivo CRC mouse model was employed to validate esculin's potential in inhibiting tumorigenesis and to elucidate its underlying mechanisms. RESULTS Esculin significantly suppressed the viability of various CRC cell lines, particularly HCT116 cells. Investigation with diverse cell death inhibitors revealed that esculin-induced cell death was associated with both apoptosis and ferroptosis. Furthermore, esculin treatment triggered cellular lipid peroxidation, as evidenced by elevated levels of malondialdehyde (MDA) and decreased levels of glutathione (GSH), indicative of its propensity to induce ferroptosis in HCT116 cells. Enhanced protein levels of protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK) and p-eIF2α suggested that esculin induced cellular endoplasmic reticulum (ER) stress, subsequently activating the Nrf2/ARE signaling pathway and initiating the transcriptional expression of heme oxygenase (HO)-1. Esculin-induced excessive expression of HO-1 could potentially lead to iron overload in HCT116 cells. Knockdown of Ho-1 significantly attenuated esculin-induced ferroptosis, underscoring HO-1 as a critical mediator of esculin-induced ferroptosis in HCT116 cells. Furthermore, utilizing an AOM/DSS-induced colorectal cancer mouse model, we validated that esculin potentially inhibits the onset and progression of colon cancer by inducing apoptosis and ferroptosis in vivo. CONCLUSIONS These findings provide comprehensive insights into the dual induction of apoptosis and ferroptosis in HCT116 cells by esculin. The activation of the PERK signaling pathway, along with modulation of downstream eIF2α/CHOP and Nrf2/HO-1 cascades, underscores the mechanistic basis supporting the clinical application of esculin on CRC treatment.
Collapse
Affiliation(s)
- Xiaoke Ji
- Department of General Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Zongpin Chen
- Department of Gastroenterology, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325200, China
| | - Weifan Lin
- College of Biological Science, China Agricultural University, Beijing, 100193, China
| | - Qifang Wu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Yu Wu
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
| | - Yan Hong
- Department of Pediatric Medicine, Taizhou Women and Children's Hospital of Wenzhou Medical University, Taizhou, 325200, China
| | - Haibin Tong
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China; State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, Beijing, 100700, China.
| | - Changxiong Wang
- Department of Digestive, Lishui Hospital of Traditional Chinese Medicine, Lishui, 323000, China.
| | - Ya Zhang
- Hepatology Diagnosis and Treatment Center & Zhejiang Provincial Key Laboratory for Accurate Diagnosis and Treatment of Chronic Liver Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China; Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China.
| |
Collapse
|
2
|
Su Z, Gao M, Weng L, Xu T. Esculin targets TLR4 to protect against LPS-induced septic cardiomyopathy. Int Immunopharmacol 2024; 131:111897. [PMID: 38513575 DOI: 10.1016/j.intimp.2024.111897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/05/2024] [Accepted: 03/16/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND Esculin, a main active ingredient from Cortex fraxini, possesses biological activities such as anti-thrombosis, anti-inflammatory, and anti-oxidation effects. However, the effects of Esculin on septic cardiomyopathy remains unclear. This study aimed to explore the protective properties and mechanisms of Esculin in countering sepsis-induced cardiac trauma and dysfunction. METHODS AND RESULTS In lipopolysaccharide (LPS)-induced mice model, Esculin could obviously improve heart injury and function. Esculin treatment also significantly reduced the production of inflammatory and apoptotic cells, the release of inflammatory cytokines, and the expression of oxidative stress-associated and apoptosis-associated markers in hearts compared to LPS injection alone. These results were consistent with those of in vitro experiments based on neonatal rat cardiomyocytes. Database analysis and molecular docking suggested that TLR4 was targeted by Esculin, as shown by stable hydrogen bonds formed between Esculin with VAL-308, ASN-307, CYS-280, CYS-304 and ASP-281 of TLR4. Esculin reversed LPS-induced upregulation of TLR4 and phosphorylation of NF-κB p65 in cardiomyocytes. The plasmid overexpressing TLR4 abolished the protective properties of Esculin in vitro. CONCLUSION We concluded that Esculin could alleviate LPS-induced septic cardiomyopathy via binding to TLR4 to attenuate cardiomyocyte inflammation, oxidative stress and apoptosis.
Collapse
Affiliation(s)
- Zhenyang Su
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China.
| | - Min Gao
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China.
| | - Liqing Weng
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China; Department of Geriatrics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu, China.
| | - Tianhua Xu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China.
| |
Collapse
|
3
|
Wu D, Luo R, Chen Y, Zheng Z, Gui S, He N. Preparation, characterisation, pharmacokinetics and distribution of esculin microspheres administered via intravitreal injection into rabbit brain. Xenobiotica 2024:1-15. [PMID: 38638108 DOI: 10.1080/00498254.2024.2341402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 04/07/2024] [Indexed: 04/20/2024]
Abstract
This study explored the distribution of esculin microspheres in rabbit brain tissue following intravitreal injection and investigated the possibility of direct entry of the drug into the brain through the eye, to develop a formulation with enhanced therapeutic efficacy against Parkinson's disease.Chitosan microspheres of esculin were prepared via an emulsification cross-linking method and their characteristics were evaluated, including angle of repose, bulk density, and swelling ratio. Furthermore, the pharmacokinetic parameters and brain tissue distribution in rabbits were compared among groups administered esculin eye drops, intravitreal esculin solution, and intravitreal esculin microspheres, to determine whether esculin could enter the brain through an ocular route.The results showed that the prepared esculin microspheres were spherical and had good fluidity. Notably, intravitreal administration enhanced the area under the curve (AUC) of esculin in the thalamus. Delivery through microspheres prolonged the drug retention time in both rabbit plasma and brain tissues, as well as the brain-targeting efficiency of esculin.The collective findings indicated that there may be a direct eye-brain pathway facilitating enter of esculin microspheres into brain tissue after intravitreal injection, supporting the utility of intravitreal esculin microspheres as an effective therapeutic formulation for Parkinson's disease, a long-term chronic condition.
Collapse
Affiliation(s)
- Danqing Wu
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Rui Luo
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Yangnan Chen
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Zhiyun Zheng
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Institute of Pharmaceutics, Anhui Academy of Chinese Medical Sciences, Hefei, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, China
| | - Shuangying Gui
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Institute of Pharmaceutics, Anhui Academy of Chinese Medical Sciences, Hefei, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, China
| | - Ning He
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Institute of Pharmaceutics, Anhui Academy of Chinese Medical Sciences, Hefei, China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, China
| |
Collapse
|
4
|
Cheng Z, Liu Z, Liu C, Yang A, Miao H, Bai X. Esculin suppresses the PERK-eIF2α-CHOP pathway by enhancing SIRT1 expression in oxidative stress-induced rat chondrocytes, mitigating osteoarthritis progression in a rat model. Int Immunopharmacol 2024; 132:112061. [PMID: 38608474 DOI: 10.1016/j.intimp.2024.112061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/14/2024]
Abstract
OBJECTIVE Osteoarthritis (OA) is a degenerative disease characterized by the gradual degeneration of chondrocytes, involving endoplasmic reticulum (ER) stress. Esculin is a natural compound with antioxidant, anti-inflammatory and anti-tumor properties. However, its impact on ER stress in OA therapy has not been thoroughly investigated. We aim to determine the efficiency of Esculin in OA treatment and its underlying mechanism. METHODS We utilized the tert-butyl hydroperoxide (TBHP) to establish OA model in chondrocytes. The expression of SIRT1, PERK/eIF2α pathway-related proteins, apoptosis-associated proteins and ER stress-related proteins were detected by Western blot and Real-time PCR. The apoptosis was evaluated by flow cytometry and terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) staining. X-ray imaging, Hematoxylin & Eosin staining, Safranin O staining and immunohistochemistry were used to assess the pharmacological effects of Esculin in the anterior cruciate ligament transection (ACLT) rat OA model. RESULTS Esculin downregulated the expression of PERK/eIF2α pathway-related proteins, apoptosis-associated proteins and ER stress-related proteins, while upregulated the expression of SIRT1 and Bcl2 in the TBHP-induced OA model in vitro. It was coincident with the results of TUNEL staining and flow cytometry. We further confirmed the protective effect of Esculin in the rat ACLT-related model. CONCLUSION Our results suggest the potential therapeutic value of Esculin on osteoarthritis. It probably inhibits the PERK-eIF2α-ATF4-CHOP pathway by upregulating SIRT1, thereby mitigating endoplasmic reticulum stress and protecting chondrocytes from apoptosis.
Collapse
Affiliation(s)
- Zhihua Cheng
- Dalian Medical University, Dalian City, Liaoning Province, China
| | - Zheyuan Liu
- China Medical University, Shenyang City, Liaoning Province, China
| | - Chao Liu
- Department of Orthopedics, Liaoning Jinqiu Hospital, Shenyang City, Liaoning Province, China
| | - Aoxiang Yang
- Dalian Medical University, Dalian City, Liaoning Province, China
| | - Haichuan Miao
- Dalian Medical University, Dalian City, Liaoning Province, China
| | - Xizhuang Bai
- Dalian Medical University, Dalian City, Liaoning Province, China; Department of Arthrology, Liaoning Provincial People's Hospital, Shenyang City, Liaoning Province, China.
| |
Collapse
|
5
|
Xu S, Chen Y, Miao J, Li Y, Liu J, Zhang J, Liang J, Chen S, Hou S. Esculin inhibits hepatic stellate cell activation and CCl 4-induced liver fibrosis by activating the Nrf2/GPX4 signaling pathway. Phytomedicine 2024; 128:155465. [PMID: 38471319 DOI: 10.1016/j.phymed.2024.155465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 01/11/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024]
Abstract
BACKGROUND Liver fibrosis (LF) is a pathological process of the liver that threatens human health. Currently, effective treatments are still lacking. Esculin, a prominent constituent found in the Fraxinus rhynchophylla. (bark), Aesculus hippocastanum. (bark), and Cichorium intybus. (herb), has been shown to possess significant anti-inflammatory, antioxidant, and antibacterial properties. However, to date, there have been no studies investigating its potential efficacy in the treatment of LF. OBJECTIVE The study aims to investigate the therapeutic effect of esculin on LF and elucidate its potential molecular mechanism. METHODS Carbon tetrachloride (CCl4) was injected intraperitoneally to induce LF in mice, and transforming growth factor β1 (TGF-β1) was injected to induce LX-2 cells to investigate the improvement effect of esculin on LF. Kit, histopathological staining, immunohistochemistry (IHC), immunofluorescence (IF), polymerase chain reaction (PCR), and western blot (WB) were used to detect the expression of fiber markers and nuclear factor erythroid 2-related factor 2 (Nrf2)/glutathione peroxidase 4 (GPX4) signaling pathway in liver tissue and LX-2 cells. Finally, molecular docking, cellular thermal shift assay (CETSA), and drug affinity responsive target stability (DARTS) were used to verify the targeting between Nrf2 and esculin. RESULTS Esculin significantly inhibited CCl4-induced hepatic fibrosis and inflammation in mice. This was evidenced by the improvement of liver function indexes, fibrosis indicators, and histopathology. Additionally, esculin treatment prominently reduced the levels of pro-inflammatory factors, oxidative stress, and liver Fe2+ in CCl4-induced mice. In vitro studies also showed that esculin treatment significantly inhibited TGF-β1-induced LX-2 cell activation and decreased alpha-smooth muscle actin (α-SMA) and collagen I expression. Mechanism experiments proved that esculin can activate the Nrf2/GPX4 signaling pathway and inhibit liver ferroptosis. However, when LX-2 cells were treated with the Nrf2 inhibitor (ML385), the therapeutic effect of esculin significantly decreased. CONCLUSION This study is the first to demonstrate that esculin is a potential natural active ingredient in the treatment of LF, which can inhibit the activation of hepatic stellate cells (HSC) and improve LF. Its therapeutic effect is related to the activation of the Nrf2/GPX4 signaling pathway.
Collapse
Affiliation(s)
- Shuoxi Xu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, PR China
| | - Yonger Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, PR China
| | - Jindian Miao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, PR China
| | - Yuhua Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, PR China
| | - Jiaying Liu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, PR China
| | - Jing Zhang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, PR China
| | - Jian Liang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, PR China
| | - Shuxian Chen
- Department of Hepatobiliary Surgery, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510000, PR China.
| | - Shaozhen Hou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, PR China.
| |
Collapse
|
6
|
Yang YY, Qi JJ, Jiang SY, Ye L. Esculin ameliorates obesity-induced insulin resistance by improving adipose tissue remodeling and activating the IRS1/PI3K/AKT/GLUT4 pathway. J Ethnopharmacol 2024; 319:117251. [PMID: 37778516 DOI: 10.1016/j.jep.2023.117251] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 09/13/2023] [Accepted: 09/28/2023] [Indexed: 10/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cortex fraxini (also known as qinpi)-the bark of Fraxinus rhynchophylla Hance (Oleaceae)-is widely used as a Chinese traditional medicinal for its anti-inflammatory and anti-hyperuricemic activities. AIM OF THE STUDY Obesity-induced insulin resistance (IR) is driving the rising incidence of type 2 diabetes mellitus and is related to pathological adipose tissue remodeling. Esculin, a major active component of Cortex fraxini, has anti-diabetic effects. However, whether esculin improves obesity-induced IR by regulating adipose tissue remodeling is unclear. The aims of the present study were to assess the effects of esculin on obesity-induced IR and to explore the underlying mechanisms. MATERIALS AND METHODS Obese IR C57BL/6J mice were treated with esculin (40 or 80 mg/kg/day) for 4 weeks. Oral glucose tolerance tests were used to assess insulin sensitivity. Histological analyses were performed to analyze the number and size distribution of adipocytes. Glucose uptake was assessed using 2-NBDG. RESULTS Esculin had no effect on body weight gain but reduced fasting blood glucose, improved oral glucose tolerance, and increased insulin sensitivity. Esculin reduced adipocyte size and the expression levels of collagen 4A1 and tumor necrosis factor α and increased the number of adipocytes and the expression of vascular endothelial growth factor A. Esculin promoted the differentiation of 3T3-L1 cells and upregulated the mRNA expression of CCAAT/enhancer-binding protein α and peroxisome proliferator-activated receptor-γ, activated the insulin receptor substrate 1 (IRS1)/phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) signaling pathway, and enhanced the translocation of glucose transporter type 4 (GLUT4) and glucose uptake in adipocytes treated with palmitic acid. CONCLUSIONS These data suggest that esculin increases insulin sensitivity by improving adipose tissue remodeling and activating the IRS1/PI3K/AKT/GLUT4 pathway.
Collapse
Affiliation(s)
- Yong-Yu Yang
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China; Hunan Provincial Engineering Research Central of Translational Medical and Innovative Drug, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
| | - Jing-Jing Qi
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
| | - Si-Yi Jiang
- Department of Pharmacy, Medical College, Yueyang Vocational Technical College, YueYang, Hunan, China.
| | - Ling Ye
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
| |
Collapse
|
7
|
Naseem N, Ahmad MF, Malik S, Khan RH, Siddiqui WA. The potential of esculin in ameliorating Type-2 diabetes mellitus induced neuropathy in Wistar rats and probing its inhibitory mechanism of insulin aggregation. Int J Biol Macromol 2023; 242:124760. [PMID: 37156314 DOI: 10.1016/j.ijbiomac.2023.124760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/01/2023] [Accepted: 05/02/2023] [Indexed: 05/10/2023]
Abstract
Diabetic neuropathy encompasses multiple pathological disturbances, many of which coincide with the pathophysiological mechanisms of neurodegenerative disorders. In the present study, various biophysical techniques like Rayleigh light scattering assay, Thioflavin T assay, far-UV Circular Dichroism spectroscopy, Transmission electron microscopy have unveiled the anti-fibrillatory effect of esculin upon human insulin fibrillation. MTT cytotoxicity assay demonstrated the biocompatibility of esculin and in-vivo studies such as behavioral tests like hot plate test, tail immersion test, acetone drop test, plantar test were performed for validating diabetic neuropathy. Assessment of levels of serum biochemical parameters, oxidative stress parameters, pro-inflammatory cytokines as well as neuron specific markers was done in the current study. Rat brains were subjected to histopathology and their sciatic nerves were subjected to transmission electron microscopy to analyze myelin structure alterations. All these results reveal that esculin ameliorates diabetic neuropathy in experimental diabetic rats. Conclusively, our study demonstrates the anti-amyloidogenic potential of esculin in the form of inhibition of human insulin fibrillation, making it a promising candidate in combating neurodegenerative disorders in the near future and the results of various behavioral, biochemical, and molecular studies reveal that esculin possesses anti-lipidemic, anti-inflammatory, anti-oxidative and neuroprotective properties which help in ameliorating diabetic neuropathy in streptozotocin induced diabetic Wistar rats.
Collapse
Affiliation(s)
- Nida Naseem
- Research Lab-1, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India
| | - Md Fahim Ahmad
- Research Lab-1, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India
| | - Sadia Malik
- Research Lab-3, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India
| | - Rizwan Hasan Khan
- Research Lab-3, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India.
| | - Waseem A Siddiqui
- Research Lab-1, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India.
| |
Collapse
|
8
|
Ni J, Li G, Dai N, Quan Z, Tong H, Liu Y. Esculin alleviates LPS-induced acute lung injury via inhibiting neutrophil recruitment and migration. Int Immunopharmacol 2023; 119:110177. [PMID: 37068336 PMCID: PMC10105132 DOI: 10.1016/j.intimp.2023.110177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/25/2023] [Accepted: 04/09/2023] [Indexed: 04/19/2023]
Abstract
OBJECTIVES Acute lung injury (ALI) poses a serious threat to human health globally, particularly with the Coronavirus 2019 (COVID-19) pandemic. Excessive recruitment and infiltration of neutrophils is the major etiopathogenesis of ALI. Esculin, also known as 6,7-dihydroxycoumarin, is a remarkable compound derived from traditional Chinese medicine Cortex fraxini. Accumulated evidence indicates that esculin has potent anti-inflammatory effects, but its pharmaceutical effect against ALI and potential mechanisms are still unclear. METHODS This study evaluated the protective effect of esculin against ALI by histopathological observation and biochemical analysis of lung tissues and bronchoalveolar lavage fluid (BALF) in lipopolysaccharide (LPS)-challenged ALI mice in vivo. The effects of esculin on N-formyl-met-leu-phe (fMLP)-induced neutrophil migration and chemotaxis were quantitatively assessed using a Transwell assay and an automated cell imaging system equipped with a Zigmond chamber, respectively. The drug affinity responsive target stability (DARTS) assay, in vitro protein binding assay and molecular docking were performed to identify the potential therapeutic target of esculin and the potential binding sites and pattern. RESULTS Esculin significantly attenuated LPS-induced lung pathological injury, reduced the levels of pro-inflammatory cytokines in both BALF and lung, and suppressed the activation of NF-κB signaling. Esculin also significantly reduced the number of total cells and neutrophils as well as myeloperoxidase (MPO) activity in the BALF. Esculin impaired neutrophil migration and chemotaxis as evidenced by the reduced migration distance and velocity. Furthermore, esculin remarkably inhibited Vav1 phosphorylation, suppressed Rac1 activation and the PAK1/LIMK1/cofilin signaling axis. Mechanistically, esculin could interact with β2 integrin and then diminish its ligand affinity with intercellular adhesion molecule-1 (ICAM-1). CONCLUSIONS Esculin inhibits β2 integrin-dependent neutrophil migration and chemotaxis, blocks the cytoskeletal remodeling process required for neutrophil recruitment, thereby contributing to its protective effect against ALI. This study demonstrates the new therapeutic potential of esculin as a novel lead compound.
Collapse
Affiliation(s)
- Jiangwei Ni
- Department of Thoracic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, PR China
| | - Ge Li
- Department of Thoracic Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, PR China
| | - Ningfeng Dai
- Department of Thoracic Surgery, The Affiliated Cangnan Hospital of Wenzhou Medical University, Wenzhou 325800, PR China
| | - Zijiao Quan
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325000, PR China
| | - Haibin Tong
- Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, College of Life and Environmental Science, Wenzhou University, Wenzhou 325000, PR China.
| | - Yu Liu
- Department of Thoracic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, PR China.
| |
Collapse
|
9
|
Arif A, Quds R, Salam S, Mahmood R. Esculin protects human blood cells from bioallethrin-induced toxicity: An ex vivo study. Pestic Biochem Physiol 2023; 191:105375. [PMID: 36963944 DOI: 10.1016/j.pestbp.2023.105375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
Bioallethrin, a household insecticide, is a member of the pyrethroid family and is known for its adverse effects on human health. Human exposure to pyrethroids is unavoidable due to their widespread use in controlling several fatal vector-borne diseases, mostly in developing nations. Bioallethrin is known to induce oxidative stress in target cells, including erythrocytes. Here we have studied the protective effect of dietary antioxidant esculin on bioallethrin-induced damage in isolated human erythrocytes. The cells were incubated with 200 μM bioallethrin, without or with different concentrations of esculin (200, 400 and 600 μM), and the results compared to the untreated control samples. Bioallethrin-treated erythrocytes showed a significant increase in oxidative stress markers, like protein and lipid oxidation, accompanied by decrease in free amino groups and ratio of reduced to oxidized glutathione. There was enhanced generation of reactive oxygen and nitrogen species with changes in plasma membrane integrity. Bioallethrin oxidized hemoglobin to methemoglobin, which cannot transport oxygen. It altered the activities of antioxidant enzymes and lowered the electron donating and free radical quenching ability of erythrocytes. The cell morphology and redox system of erythrocyte membrane were also altered by bioallethrin. Treatment with esculin, prior to incubation with bioallethrin, led to significant restoration in all these parameters in an esculin concentration-dependent manner. Thus esculin attenuated the biolletherin-induced oxidative damage to erythrocytes. Esculin can, therefore, be an effective chemoprotectant against xenobiotic-induced toxicity in human erythrocytes.
Collapse
Affiliation(s)
- Amin Arif
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Ruhul Quds
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Samreen Salam
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Riaz Mahmood
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India.
| |
Collapse
|
10
|
Robe K, Conjero G, Dubos C. The Use of Spectral Imaging to Follow the Iron and pH-Dependent Accumulation of Fluorescent Coumarins. Methods Mol Biol 2023; 2665:23-30. [PMID: 37166589 DOI: 10.1007/978-1-0716-3183-6_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Plants challenged with iron deficiency produce in their roots and secrete into the rhizosphere several small molecules named coumarins that derive from the phenylpropanoid pathway. Coumarins are biosynthesized in different root cell types and transported to the root epidermis prior to their secretion in the surrounding media. Taking advantage of the natural fluorescence of most coumarins glycosides when exposed to UV light, we developed a method to uncover their individual cellular localization and accumulation. This approach couples spectral imaging acquisition and linear unmixing analysis. In this protocol, we describe guidelines, experimental setup, and conditions for the analysis of coumarins localization and accumulation in Arabidopsis thaliana root seedlings grown in control and iron deficiency conditions, at both acidic and alkaline pH.
Collapse
Affiliation(s)
- Kevin Robe
- IPSiM, Univ. Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Geneviève Conjero
- IPSiM, Univ. Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Christian Dubos
- IPSiM, Univ. Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France.
| |
Collapse
|
11
|
Qureshi MA, Akbar M, Amir M, Javed S. Molecular interactions of esculin with bovine serum albumin and recognition of binding sites with spectroscopy and molecular docking. J Biomol Struct Dyn 2022; 41:2630-2644. [PMID: 35139760 DOI: 10.1080/07391102.2022.2036238] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Esculin is structurally a hydroxycoumarin found in various medicinal plants. This study investigates the binding mode of esculin with bovine serum albumin by employing numerous spectroscopic studies and molecular docking approaches. Ultraviolet absorption spectroscopy revealed ground state complex formation between esculin and bovine serum albumin. At the same time, steady-state fluorescence studies showed quenching in the fluorescence emission spectra of BSA in the presence of esculin. To get insight into the location of the binding pocket of esculin on BSA, warfarin and ibuprofen site markers were used. Competitive site marker displacement assay revealed that esculin binds to Sudlow's site I (subdomain IIA) in bovine serum albumin. Thermodynamic parameters suggested that hydrogen bonding and van der Waals interaction stabilizes the esculin-BSA complex. Förster's non-radiation energy transfer analysis described the high propensity of energy transfer between bovine serum albumin and esculin. The molecular docking approach facilitated locating the binding pocket, amino acid residues involved, types of interacting forces, and binding energy (ΔG) between esculin and BSA. Circular dichroism revealed the effect of the binding of esculin on the secondary structure and helped understand the thermal unfolding profile of BSA in the presence of esculin.Communicated by Ramaswamy H. Sarm.
Collapse
Affiliation(s)
- Mohd Aamir Qureshi
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Mahmood Akbar
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Mohd Amir
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Saleem Javed
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| |
Collapse
|
12
|
Hao L, Zhang M, Li X, Xin X, Lei F, Lai X, Zhao G, Wu H. Highly efficient whole-cell biosynthesis and cytotoxicity of esculin esters. J Biotechnol 2021; 337:46-56. [PMID: 34197823 DOI: 10.1016/j.jbiotec.2021.06.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 12/17/2022]
Abstract
Esculin is a polyphenol with multiple bioactivities and poor lipophilicity. Therefore, a whole-cell catalytic strategy for esculin acylation was developed to improve its lipophilicity. A total of 12 strains were tested, among which Pseudomonas stutzeri exhibited the highest catalytic activity and mono-acylated regioselectivity. The conversion reached the highest level of 92.7 % at 24 h under the optimal conditions, when vinyl acetate was used as an acyl donor. The catalytic ability of P. stutzeri remained above 60 % after three cycles. Subsequently, five esculin esters with different lengths of fatty chains were synthesized and structurally identified. Of them, esculin-6'-O-octanoate, esculin-6'-O-laurate, and esculin-6'-O-myristate exhibited cytotoxicity on LO2 cells by inducing apoptosis and necrosis. The cytotoxicity of these three esters may attribute to their membrane-disrupting properties. This study provides a novel whole-cell biocatalytic strategy for the acylation of esculin and insight for application of esculin esters as a food additive or drug.
Collapse
Affiliation(s)
- Lisha Hao
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510640, China.
| | - Mengmeng Zhang
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510640, China.
| | - Xiaofeng Li
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510640, China.
| | - Xuan Xin
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510640, China.
| | - Faling Lei
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510640, China.
| | - Xueneng Lai
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510640, China.
| | - Guanglei Zhao
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510640, China.
| | - Hui Wu
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510640, China.
| |
Collapse
|
13
|
Tsirigotis-Maniecka M, Szyk-Warszyńska L, Lamch Ł, Weżgowiec J, Warszyński P, Wilk KA. Benefits of pH-responsive polyelectrolyte coatings for carboxymethyl cellulose-based microparticles in the controlled release of esculin. Mater Sci Eng C Mater Biol Appl 2020; 118:111397. [PMID: 33255002 DOI: 10.1016/j.msec.2020.111397] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/29/2020] [Accepted: 08/14/2020] [Indexed: 12/20/2022]
Abstract
Moderate and prolonged payload release in response to a particular factor is highly demanded for efficient carriers of low-molecular-weight, chemically unstable phytopharmaceuticals. Thus, the objective of our contribution was to establish the effect of pH-responsive polyelectrolyte coatings on the release properties of carboxymethyl cellulose-based microparticles designed to deliver phytopharmaceuticals through the gastrointestinal tract. Microparticles were fabricated via extrusion coupled with external gelation and further coated with polyelectrolytes (PEs) (chitosan, gelatin, or PAH and PSS) involving electrostatic interactions. Successful deposition of PEs was confirmed by FTIR, and their thickness and viscosity were characterized in terms of QCM-D and ellipsometric techniques. The encapsulation efficiency of esculin, used as a model phytopharmaceutical, as proven by UV-Vis studies, was over 57%. SEM and fluorescence microscopy revealed a micrometric size, a mostly spherical shape and an altered topography of the investigated microcapsules. The physical stability of the microcapsules in media of various pH values was confirmed with CLSM and gravimetric studies. Studies on human gingival fibroblasts in vitro revealed that the obtained microparticles did not induce any cytotoxic effects. Payload release was monitored in situ by means of CLSM and ex situ under gastrointestinal conditions in vitro. Mathematical evaluation of the microparticle release profiles using classical models led to the establishment of a new hybrid model that revealed the mechanism behind esculin release. We demonstrated that the application of a polyelectrolyte shell onto CMC-based microspheres may provide controlled delivery of the payload, with its release triggered by the pH and ionic strength of the medium. These observations suggest that the release manner of small-molecule glycosides under gastrointestinal conditions can be tailored by careful selection of suitable materials to obtain biocompatible and functional hydrogel microparticles.
Collapse
Affiliation(s)
- Marta Tsirigotis-Maniecka
- Department of Engineering and Technology of Chemical Processes, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Lilianna Szyk-Warszyńska
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239, Kraków, Poland
| | - Łukasz Lamch
- Department of Engineering and Technology of Chemical Processes, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Joanna Weżgowiec
- Department of Experimental Dentistry, Wroclaw Medical University, 50-425 Wroclaw, Poland
| | - Piotr Warszyński
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239, Kraków, Poland
| | - Kazimiera A Wilk
- Department of Engineering and Technology of Chemical Processes, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| |
Collapse
|
14
|
Mo M, Chen MJ, Huang Y, Jiang W, Qin QH, Liang ZJ, Yang WP, Wei CY. [ Esculin inhibits proliferation of triple negative breast cancer cells by down-regulating FBI-1]. Zhonghua Zhong Liu Za Zhi 2020; 42:629-634. [PMID: 32867453 DOI: 10.3760/cma.j.cn112152-20191001-00642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of esculin on the proliferation of triple negative breast cancer cells and its molecular mechanism. Methods: MDA-MB-231 cells were treated with 28, 56, 112, 225, 450 and 900 μmol/L of esculin for 24, 48 and 72 h, respectively, and the cell viability was detected by cell counting kit 8 (CCK-8) assay. In addition, MDA-MB-231 cells were treated with 0, 225, 450 and 900 μmol/L of esculin for 48 h. And then the changes in cell morphology were observed by inverted microscope. The clone-forming ability was detected by colony formation assay. The mRNA expression levels of FBI-1, p53 and p21 were detected using real-time fluorescence quantitative polymerase chain reaction. The protein expression levels of FBI-1, p53, p21 and Ki67 were detected by western blot. Results: Compared with the blank control group, the cell viability of MDA-MB-231 cells that treated with esculin significantly decreased in a dose-dependent and time-dependent manners. After treatment with esculin, MDA-MB-231 cells shrunk, flattened, adhered poorly to the culture dish and the cell spacing became larger. Meanwhile, shedding and incomplete cells appeared, of which 900 μmol/L of esculin treatment group showed the most dramatic changes. In addition, the colony formation ratios were decreased to (77.18±5.13)%, (65.94±4.98)% and (45.92±3.70)% in the 225, 450 and 900 μmol/L of esculin treatment groups compared with blank control, respectively (P<0.01). Furthermore, the mRNA and protein expressions of FBI-1 increased, while the levels of p53 and p21 mRNA and protein, as well as the protein expression of Ki67 decreased in a concentration-dependent manner (P<0.01). Conclusion: Esculin may regulate cell cycle-related p53-p21 pathway via FBI-1 mediated DNA replication, thus inhibit the proliferation of triple negative breast cancer cells.
Collapse
Affiliation(s)
- M Mo
- Department of Breast Surgery, Guangxi Medical University Cancer Hospital, Nanning 530021, China
| | - M J Chen
- Department of Breast Surgery, Guangxi Medical University Cancer Hospital, Nanning 530021, China
| | - Y Huang
- Department of Experimental Research, Guangxi Medical University Cancer Hospital, Nanning 530021, China
| | - W Jiang
- Department of Respiratory Oncology, Guangxi Medical University Cancer Hospital, Nanning 530021, China
| | - Q H Qin
- Department of Breast Surgery, Guangxi Medical University Cancer Hospital, Nanning 530021, China
| | - Z J Liang
- Breast Center, the Fifth Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - W P Yang
- Department of Ultrasound, Guangxi Medical University Cancer Hospital, Nanning 530021, China
| | - C Y Wei
- Department of Breast Surgery, Guangxi Medical University Cancer Hospital, Nanning 530021, China
| |
Collapse
|
15
|
Pommerrenig B, Müdsam C, Kischka D, Neuhaus HE. Treat and trick: common regulation and manipulation of sugar transporters during sink establishment by the plant and the pathogen. J Exp Bot 2020; 71:3930-3940. [PMID: 32242225 DOI: 10.1093/jxb/eraa168] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
Sugar transport proteins are crucial for the coordinated allocation of sugars. In this Expert View we summarize recent key findings of the roles and regulation of sugar transporters in inter- and intracellular transport by focusing on applied approaches, demonstrating how sucrose transporter activity may alter source and sink dynamics and their identities. The plant itself alters its sugar transport activity in a developmentally dependent manner to either establish or load endogenous sinks, for example, during tuber formation and filling. Pathogens represent aberrant sinks that trigger the plant to induce the same processes, resulting in loss of carbon assimilates. We explore common mechanisms of intrinsic, developmentally dependent processes and aberrant, pathogen-induced manipulation of sugar transport. Transporter activity may also be targeted by breeding or genetic modification approaches in crop plants to alter source and sink metabolism upon the overexpression or heterologous expression of these proteins. In addition, we highlight recent progress in the use of sugar analogs to study these processes in vivo.
Collapse
Affiliation(s)
| | - Christina Müdsam
- Biochemistry, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Dominik Kischka
- Biochemistry, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | | |
Collapse
|
16
|
Serralha RS, Rodrigues IF, Bertolini A, Lima DY, Nascimento M, Mouro MG, Punaro GR, Visoná I, Rodrigues AM, Higa EMS. Esculin reduces P2X7 and reverses mitochondrial dysfunction in the renal cortex of diabetic rats. Life Sci 2020; 254:117787. [PMID: 32417372 DOI: 10.1016/j.lfs.2020.117787] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 02/07/2023]
Abstract
AIMS To evaluate the effects of esculin treatment on P2X7 receptor and mitochondrial dysfunction in the renal cortex of diabetic rats. MAIN METHODS Male Wistar rats, 7 weeks old, were unilaterally nephrectomized. Part of these animals were induced to diabetes using streptozotocin (60 mg/kg). Diabetes was confirmed 48 h after induction, with blood glucose levels ≥200 mg/dL. Part of control and diabetic animals were selected to receive daily doses of esculin (50 mg/kg), during 8 weeks. The animals were placed in metabolic cages at the eighth week of protocol for 24 h urine collection and a small aliquot of blood was collected for biochemical analysis. After this procedure, the animals were euthanized and the remaining kidney was stored for histopathological analysis, Western blotting and mitochondrial high-resolution respirometry. KEY FINDINGS Although esculin did not change metabolic parameters, renal biochemical function, neither TBARS in DM rats, esculin reduced P2X7 levels in these animals and restored mitochondrial function via glycolysis substrates and β-oxidation. Besides, at the histological analysis, we observed that esculin reduced inflammatory infiltrates and collagen IV deposits as compared to diabetic group. SIGNIFICANCE Esculin attenuated the development of renal injuries caused by hyperglycemia, proinflammatory and oxidative mechanisms mediated by P2X7 receptor, as seen by histological findings and improved mitochondrial function in diabetic animals. This suggests that esculin could be used as an adjuvant therapy to prevent the diabetic nephropathy.
Collapse
Affiliation(s)
- R S Serralha
- Translational Medicine, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil.
| | - I F Rodrigues
- Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Nephrology Division, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil
| | - A Bertolini
- Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Nephrology Division, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil
| | - D Y Lima
- Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Nephrology Division, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil
| | - M Nascimento
- Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Nephrology, Universidade Federal de Sao Paulo, Brazil
| | - M G Mouro
- Translational Medicine, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil
| | - G R Punaro
- Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Nephrology Division, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil
| | - I Visoná
- Pathology Department, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil
| | - A M Rodrigues
- Translational Medicine, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil
| | - E M S Higa
- Translational Medicine, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Laboratory of Nitric Oxide and Oxidative Stress, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Nephrology Division, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil; Emergency Division, Universidade Federal de Sao Paulo (UNIFESP-EPM), Brazil
| |
Collapse
|
17
|
Rottmann T, Stadler R. Measuring Sucrose Transporter Activities Using a Protoplast- Esculin Assay. Methods Mol Biol 2019; 2014:253-266. [PMID: 31197802 DOI: 10.1007/978-1-4939-9562-2_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Sucrose transport across membranes requires the activity of transport proteins. Sucrose-specific SWEET proteins mediate sugar efflux out of the cytosol and SUC proteins catalyze the uptake of sucrose from the apoplast. Both transport processes are involved in phloem loading in source leaves as well as in the post-phloem pathway in sink tissues. An important step during the characterization of new sucrose transporters is to analyze their transport activity. This is usually achieved by heterologous expression of the respective gene in yeast cells or Xenopus oocytes and subsequent uptake measurements. However, in some cases, mistargeting to internal membranes or the lack of protein modifications and/or interaction partners in the heterologous system can interfere with uptake analyses. Therefore, a new in planta method was developed that is based on mesophyll protoplasts as expression system and the fluorescent sucrose analog esculin to monitor uptake activities by confocal microscopy. In this chapter we describe the design of constructs required to analyze sucrose transporters in protoplasts, the experimental setup of the protoplast-esculin assay, and the quantitative evaluation of the obtained data. The quantification of esculin uptake allows the application of the new assay to a variety of questions, e.g., by comparison of point mutants, splice variants, or transporters with and without interaction partners.
Collapse
Affiliation(s)
- Theresa Rottmann
- Molecular Plant Physiology, Department of Biology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Ruth Stadler
- Molecular Plant Physiology, Department of Biology, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany.
| |
Collapse
|
18
|
Mo Z, Li L, Yu H, Wu Y, Li H. Coumarins ameliorate diabetogenic action of dexamethasone via Akt activation and AMPK signaling in skeletal muscle. J Pharmacol Sci 2019; 139:151-157. [PMID: 30733181 DOI: 10.1016/j.jphs.2019.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 12/29/2018] [Accepted: 01/09/2019] [Indexed: 02/06/2023] Open
Abstract
Glucocorticoids are widely prescribed for lots of pathological conditions, however, can produce 'Cushingoid' side effects including central obesity, glucose intolerance, insulin resistance and so forth. Our study is intended to investigate the improving effects of coumarins on diabetogenic action of dexamethasone in vivo and in vitro and elucidate potential mechanisms. ICR mice treated with dexamethasone for 21 days exhibited decreased body weight, increased blood glucose and impaired glucose tolerance, which were prevented by fraxetin (40 mg/kg/day), esculin (40 mg/kg/day) and osthole (20 mg/kg/day), respectively. Esculin, fraxetin and osthole also could promote glucose uptake in normal C2C12 myotubes, and improve insulin resistance in myotubes induced by dexamethasone. Western blotting results indicated that esculin, fraxetin and osthole could boost Akt activation, stimulate GLUT4 translocation, thus alleviate insulin resistance. Esculin and osthole also could activate AMPK, thereby phosphorylate TBC1D1 at Ser237, and consequently ameliorate diabetogenic action of dexamethasone. Our study indicates coumarins as potential anti-diabetic candidates or leading compounds for drug development.
Collapse
Affiliation(s)
- Zejun Mo
- Institute of Pharmacology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China; The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, People's Republic of China
| | - Linghuan Li
- Institute of Pharmacology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Haiwen Yu
- Institute of Pharmacology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Yingqi Wu
- Institute of Pharmacology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Hanbing Li
- Institute of Pharmacology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China; Section of Endocrinology, School of Medicine, Yale University, New Haven 06520, USA.
| |
Collapse
|
19
|
Abstract
Historically, the ability to measure the velocity of phloem sap in small seedlings and plants has been technically challenging. The phloem tissues are delicate, often flow is blocked entirely if perturbed. Furthermore, the depth that phloem sieve tubes are located within the plant has hindered many techniques. Previously published methods have lacked the spatial and temporal resolution required for measurements in small seedlings, are usually laborious or are not suited to in vivo studies. Here we describe a rapid, high-throughput method using the fluorescent coumarin glucoside esculin as a probe to measure the phloem transport velocity in the roots of young Arabidopsis seedlings.
Collapse
Affiliation(s)
- Kirsten Knox
- Institute of Molecular Plant Science, School of Biological Sciences, University of Edinburgh, Edinburgh, UK.
| |
Collapse
|
20
|
Hijazin T, Radwan A, Abouzeid S, Dräger G, Selmar D. Uptake and modification of umbelliferone by various seedlings. Phytochemistry 2019; 157:194-199. [PMID: 30439620 DOI: 10.1016/j.phytochem.2018.10.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/25/2018] [Accepted: 10/27/2018] [Indexed: 05/11/2023]
Abstract
Inspired by the recently discovered phenomenon of "horizontal natural product transfer" we investigated the putative uptake of phenolic specialized metabolites. Umbelliferone was chosen for this case study, since this coumarin as well as its derivatives can easily be determined by HPLC analyses. Barley (Hordeum vulgare L.), radish (Raphanus sativus L.), pea (Pisum sativum L.), flax (Linum usitatissimum L.), and garden cress (Lepidium sativum L.) were cultivated in hydroponic media, to which the coumarin was applied. Uptake of umbelliferone was verified by corresponding HPLC analyses of extracts obtained from the aerial parts of the seedlings. In all cases, a tremendous uptake of umbelliferone was observed. In plants that genuinely contain coumarins, the umbelliferone taken up was modified: in garden cress, it was hydroxylated and glucosylated to yield esculin, while in barley seedlings, the imported umbelliferone was modified by methoxylation to yield scopoletin. Corresponding reactions are known from modifications of xenobiotics to be catalyzed by cytochrome P450 enzymes. Accordingly, in an additional approach, umbelliferone was applied together with naproxen, which is reported to reduce enzyme activity of P450 enzymes. As predicted, the conversion of umbelliferone to scopoletin in barley as well as the modification to esculin in garden cress was strongly reduced by the addition of naproxen. These data for the first time demonstrate that - in addition to alkaloids - also phenolic compounds are taken up by various acceptor plants. Apart from the leaching of rotting plants, coumarins are known to be exuded by many plants. Accordingly, these compounds are frequently present in soils and will be taken up. These coherences imply that the horizontal natural product transfer might represent a more general phenomenon in plant ecology. Moreover, this study outlines that - in analogy to the modification of xenobiotics - also natural products taken up are modified in the acceptor plants.
Collapse
Affiliation(s)
- Tahani Hijazin
- TU Braunschweig Institute for Plant Biology, Mendelssohnstr. 4, 38106, Braunschweig, Germany; Biology Department, Faculty of Science, Mutah University, P.O. Box7, Mutah, 61710, Al-Karak, Jordan
| | - Alzahraa Radwan
- TU Braunschweig Institute for Plant Biology, Mendelssohnstr. 4, 38106, Braunschweig, Germany; Agriculture Genetic Engineering Research Institute, AGERI- ARC, Giza, Egypt
| | - Sara Abouzeid
- TU Braunschweig Institute for Plant Biology, Mendelssohnstr. 4, 38106, Braunschweig, Germany; Pharmacognosy Department, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Gerald Dräger
- Leibniz University Hannover, Institute of Organic Chemistry, Germany
| | - Dirk Selmar
- TU Braunschweig Institute for Plant Biology, Mendelssohnstr. 4, 38106, Braunschweig, Germany.
| |
Collapse
|
21
|
Owczarek A, Kłys A, Olszewska MA. A validated 1H qNMR method for direct and simultaneous quantification of esculin, fraxin and (-)-epicatechin in Hippocastani cortex. Talanta 2018; 192:263-269. [PMID: 30348388 DOI: 10.1016/j.talanta.2018.09.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 09/07/2018] [Accepted: 09/11/2018] [Indexed: 10/28/2022]
Abstract
A fast and precise qNMR method was developed for quantification of major bioactive constituents in the bark of horse chestnut and dry extracts prepared thereof. The method was optimised using 600 MHz spectrometer, and the final acquisition parameters (90°-pulse, acquisition time - 3.0 s, relaxation delay - 27 s, number of transients - 16) allowed for performing of quantitative experiments in under 15 min. The contents of three analytes were determined using specific 1H resonances at δ7.45 ppm for esculin, δ5.00 ppm for fraxin, and δ5.94 ppm for (-)-epicatechin. The validation showed good precision (RSD < 1.5%) and accuracy (95-103%), and adequate sensitivity (LODs in the range of 3.3-5.9 µg) of the measurements. The determined levels in commercial samples of Hippocastani cortex were in the range of 25.89-38.94 mg/g dry weight (dw) of the bark for esculin, 12.58-17.13 mg/g dw for fraxin and 10.42-13.96 mg/g dw for (-)-epicatechin, and in the dry extracts prepared thereof 97.02-143.51 mg/g, 45.78-58.92 mg/g and 28.07-46.29 mg/g, respectively. The obtained results were cross-validated by a HPLC-PDA method with the use of a fused-core column, and no statistical differences were found between the results obtained by both methodologies, but with the advantage of higher precision of the qNMR assay. The relevant variability in quantitative composition of the commercial samples emphasise the need to introduce quality control studies in production of preparations containing horse chestnut bark and the developed method was proved suitable for this purpose.
Collapse
Affiliation(s)
- Aleksandra Owczarek
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland.
| | - Arkadiusz Kłys
- Department of Chemistry, University of Lodz, Tamka 12, 91-403 Lodz, Poland
| | - Monika A Olszewska
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
| |
Collapse
|
22
|
Mokdad Bzeouich I, Mustapha N, Maatouk M, Ghedira K, Ghoul M, Chekir-Ghedira L. Genotoxic and anti-genotoxic effects of esculin and its oligomer fractions against mitomycin C-induced DNA damages in mice. Regul Toxicol Pharmacol 2016; 82:48-52. [PMID: 27825835 DOI: 10.1016/j.yrtph.2016.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/28/2016] [Accepted: 11/01/2016] [Indexed: 11/15/2022]
Abstract
Mitomycin C is one of the most effective chemotherapeutic drugs against various solid tumors. However, despite its wide spectrum of clinical benefits, this agent is capable of inducing various types of genotoxicity. In this study, we investigated the effect of esculin and its oligomer fractions (E1, E2 and E3) against mitomycin C induced genotoxicity in liver and kidney cells isolated from Balb/C mice using the comet assay. Esculin and its oligomer fractions were not genotoxic at the tested doses (20 mg/kg and 40 mg/kg b.w). A significant decrease in DNA damages was observed, suggesting a protective role of esculin and its oligomer fractions against the genotoxicity induced by mitomycin C on liver and kidney cells. Moreover, esculin and its oligomer fractions did not induce an increase of malondialdehyde levels.
Collapse
Affiliation(s)
- Imen Mokdad Bzeouich
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, University of Monastir, Avicenna Street, 5000, Monastir, Tunisia; Unit of Bioactive and Natural Substances and Biotechnology UR12ES12, Faculty of Pharmacy, University of Monastir, Avicenna Street, 5000, Monastir, Tunisia
| | - Nadia Mustapha
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, University of Monastir, Avicenna Street, 5000, Monastir, Tunisia; Unit of Bioactive and Natural Substances and Biotechnology UR12ES12, Faculty of Pharmacy, University of Monastir, Avicenna Street, 5000, Monastir, Tunisia
| | - Mouna Maatouk
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, University of Monastir, Avicenna Street, 5000, Monastir, Tunisia; Unit of Bioactive and Natural Substances and Biotechnology UR12ES12, Faculty of Pharmacy, University of Monastir, Avicenna Street, 5000, Monastir, Tunisia
| | - Kamel Ghedira
- Laboratory of Cellular and Molecular Biology, Faculty of Dental Medicine, University of Monastir, Avicenna Street, 5000, Monastir, Tunisia
| | - Mohamed Ghoul
- Laboratory of Biomolecular Engineering, National School of Agronomy and Food Industries, National Polytechnics Institute of Lorraine ENSAIA-INPL, 54505, Vandoeuvre les Nancy, France
| | - Leila Chekir-Ghedira
- Unit of Bioactive and Natural Substances and Biotechnology UR12ES12, Faculty of Pharmacy, University of Monastir, Avicenna Street, 5000, Monastir, Tunisia.
| |
Collapse
|
23
|
Li W, Wang Y, Wang X, He Z, Liu F, Zhi W, Zhang H, Niu X. Esculin attenuates endotoxin shock induced by lipopolysaccharide in mouse and NO production in vitro through inhibition of NF-κB activation. Eur J Pharmacol 2016; 791:726-734. [PMID: 27746168 DOI: 10.1016/j.ejphar.2016.10.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 10/08/2016] [Accepted: 10/12/2016] [Indexed: 11/25/2022]
Abstract
Esculin, a coumarin compound derived from the traditional Chinese herbs such as Cortex Fraxini, has long been used for treating inflammatory and vascular diseases. In present study, we analyzed the role of esculin against macrophages and endotoxin shock induced by lipopolysaccharide (LPS) in mice. Here, we demonstrated that esculin suppressed inflammatory reactions in macrophages and protected mice from LPS-induced endotoxin shock. We found that esculin significantly inhibited the production of nitric oxide (NO) production via the inhibition of nuclear factor-κB (NF-κB) activation in macrophages. In animal model, esculin pretreatment significantly improved the survival rate of mice. LPS-induced increase of tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) in serum, lung, liver and kidney were markedly inhibited by esculin. IL-10, an anti-inflammatory cytokine, was up-regulated by esculin. Moreover, the histopathological analyses showed that esculin significantly attenuated the tissues injury of lung, liver, kidney in endotoxic mice. In addition, esculin significantly diminished the protein expression of NF-κB p65 in lung, liver, kidney, which resulted in lower levels of inflammatory mediators. These results suggest that esculin may be a potential drug for treatment of various inflammatory diseases.
Collapse
Affiliation(s)
- Weifeng Li
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China.
| | - Yu Wang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Xiumei Wang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Zehong He
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Fang Liu
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Wenbing Zhi
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Hailin Zhang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Xiaofeng Niu
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China.
| |
Collapse
|
24
|
Wang Y, Zhao M, Ou Y, Zeng B, Lou X, Wang M, Zhao C. Metabolic profile of esculin in rats by ultra high performance liquid chromatography combined with Fourier transform ion cyclotron resonance mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1020:120-8. [PMID: 27038404 DOI: 10.1016/j.jchromb.2016.03.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 03/12/2016] [Accepted: 03/19/2016] [Indexed: 12/19/2022]
Abstract
Esculin, a coumarin derivative found in Fraxinus rhynchophylla, has been reported to possess multiple biological activities. This present study is designed to investigate the metabolic profile of esculin in vivo based on ultra high performance liquid chromatography coupled to Fourier transform ion cyclotron resonance mass spectrometry (UHPLC-FT-ICR-MS) for the first time. After oral administration of esculin (100 mg/kg) for rats, plasma, urine, feces and bile samples were collected to screen metabolites. As a result, a total of 19 metabolites (10 phase I metabolites and 9 phase II metabolites) were found and identified. Results showed that metabolic pathways of esculin included hydrolysis, dehydrogenation, hydroxylation, methylation, dehydrogenation, glucuronidation, sulfation, and glycine conjugation. It was also found that after oral administration of esculin, the esculin could be metabolized to esculetin in vivo via deglycosylation, and esculetin was found in all biological samples. This study also laid solid basis for in-depth development of esculin and provided important information for clarifying the biotransformation process of esculin in vivo.
Collapse
Affiliation(s)
- Yinan Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Min Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Yingfu Ou
- Medicine Experiment Center, School of Medicine, Eastern Liaoning University, Dandong 118002, China
| | - Bowen Zeng
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Xinyu Lou
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Miao Wang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China
| | - Chunjie Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang, Liaoning Province, China.
| |
Collapse
|
25
|
Mokdad-Bzeouich I, Kovacic H, Ghedira K, Chebil L, Ghoul M, Chekir-Ghedira L, Luis J. Esculin and its oligomer fractions inhibit adhesion and migration of U87 glioblastoma cells and in vitro angiogenesis. Tumour Biol 2015; 37:3657-64. [PMID: 26459313 DOI: 10.1007/s13277-015-4209-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 10/05/2015] [Indexed: 11/25/2022] Open
Abstract
Cancer metastasis is the major cause of cancer-related death. Chemoprevention is defined as the use of natural or synthetic substances to prevent cancer formation or cancer progress. In the present study, we investigate the antitumor activity of esculin and its oligomer fractions in U87 glioblastoma cells. We showed that esculin and its oligomers reduced U87 cell growth in a dose dependent manner. They also inhibited cell adhesion to collagen IV and vitronectin by interfering with the function of their respective receptors α2β1 and αvβ5 integrins. Furthermore, the tested samples were able to reduce migration of U87 cells towards another extracellular matrix fibronectin. Moreover, esculin and its oligomer fractions inhibited in vitro angiogenesis of endothelial cells (HMEC-1). In summary, our data provide the first evidence that esculin and its oligomer fractions are able to reduce adhesion, migration of glioblastoma cells and in vitro angiogenesis. Esculin and its oligomers may thus exert multi-target functions against cancer cells.
Collapse
Affiliation(s)
- Imen Mokdad-Bzeouich
- Laboratoire de biologie cellulaire et moléculaire. Faculté de Médecine dentaire. Université de Monastir, Rue Avicenne, Monastir, 5000, Tunisie.,Unité de Substances Naturelles Bioactives et Biotechnologie UR12ES12, Faculté de Pharmacie de Monastir, Université de Monastir, Rue Avicenne, Monastir, 5000, Tunisie
| | - Hervé Kovacic
- INSERM UMR 911-CRO2, Faculté de Pharmacie, Aix-Marseille Université, Marseille, France
| | - Kamel Ghedira
- Unité de Substances Naturelles Bioactives et Biotechnologie UR12ES12, Faculté de Pharmacie de Monastir, Université de Monastir, Rue Avicenne, Monastir, 5000, Tunisie
| | - Latifa Chebil
- Laboratoire d'Ingénierie des Biomolécules, ENSAIA-INPL, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Mohamed Ghoul
- Laboratoire d'Ingénierie des Biomolécules, ENSAIA-INPL, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Leila Chekir-Ghedira
- Laboratoire de biologie cellulaire et moléculaire. Faculté de Médecine dentaire. Université de Monastir, Rue Avicenne, Monastir, 5000, Tunisie. .,Unité de Substances Naturelles Bioactives et Biotechnologie UR12ES12, Faculté de Pharmacie de Monastir, Université de Monastir, Rue Avicenne, Monastir, 5000, Tunisie.
| | - José Luis
- INSERM UMR 911-CRO2, Faculté de Pharmacie, Aix-Marseille Université, Marseille, France
| |
Collapse
|
26
|
Niu X, Wang Y, Li W, Zhang H, Wang X, Mu Q, He Z, Yao H. Esculin exhibited anti-inflammatory activities in vivo and regulated TNF-α and IL-6 production in LPS-stimulated mouse peritoneal macrophages in vitro through MAPK pathway. Int Immunopharmacol 2015; 29:779-786. [PMID: 26391063 DOI: 10.1016/j.intimp.2015.08.041] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/06/2015] [Accepted: 08/31/2015] [Indexed: 10/23/2022]
Abstract
Esculin, a coumarinic derivative found in Aesculus hippocastanum L. (Horse-chestnut), has been reported to have potent anti-inflammatory properties. The present study is designed to investigate the protective effects of esculin on various inflammation models in vivo and in vitro and to clarify the possible mechanism. Induced-animal models of inflammation and lipopolysaccharide (LPS)-challenged mouse peritoneal macrophages were used to examine the anti-inflammatory activity of esculin. In present study, xylene-induced mouse ear edema, carrageenan-induced rat paw edema, and carrageenan-induced mouse pleurisy were attenuated by esculin. In vitro, the pro-inflammatory cytokine levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in supernatant were reduced by esculin. Meanwhile, we found that esculin significantly inhibited LPS-induced activation of mitogen-activated protein kinase (MAPK) pathway in peritoneal macrophages. These results suggest that esculin has potent anti-inflammatory activities in vivo and in vitro, which may involve the inhibition of the MAPK pathway. Esculin may be a promising preventive agent for inflammatory diseases in human.
Collapse
Affiliation(s)
- Xiaofeng Niu
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China.
| | - Yu Wang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Weifeng Li
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China.
| | - Hailin Zhang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Xiumei Wang
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Qingli Mu
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Zehong He
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Huan Yao
- School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, PR China
| |
Collapse
|
27
|
Jamshieed S, Das S, Sharma MP, Srivastava PS. Difference in in vitro response and esculin content in two populations of Taraxacum officinale Weber. Physiol Mol Biol Plants 2010; 16:353-8. [PMID: 23572985 PMCID: PMC3550650 DOI: 10.1007/s12298-010-0038-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In vitro micropropagation has been achieved in medicinally important plant, Taraxacum officinale collected from two different regions, Kashmir (J & K) and Garhwal (Uttarakhand). Leaf segments inoculated on MS supplemented with different combinations of Indole-3-acetic acid (IAA) and Benzyladenine (BA) produced indirect regeneration. For root induction MS fortified with Indole-3-butyric acid (IBA) was used. Taraxacum officinale collected from Garhwal responded two weeks earlier and showed shoot regeneration whereas in Kashmir population only callus proliferation occurred. Esculin content was also higher in the samples from Garhwal. The content was affected by both, the hormone concentration as well as age of the cultures. RAPD of the in vitro raised regenerants confirmed genetic stability.
Collapse
Affiliation(s)
- Sumiya Jamshieed
- />Department of Botany, Faculty of Science, Jamia Hamdard, New Delhi, 110062 India
- />Department of Biotechnology, Faculty of Science, Jamia Hamdard, New Delhi, 110062 India
| | - Sandip Das
- />Department of Biotechnology, Faculty of Science, Jamia Hamdard, New Delhi, 110062 India
| | - M. P. Sharma
- />Department of Botany, Faculty of Science, Jamia Hamdard, New Delhi, 110062 India
| | - P. S. Srivastava
- />Department of Biotechnology, Faculty of Science, Jamia Hamdard, New Delhi, 110062 India
| |
Collapse
|