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Wei G, Zhu H, Zhou Y, Pan Y, Yi B, Bai Y. Single-cell sequencing revealed metabolic reprogramming and its transcription factor regulatory network in prostate cancer. Transl Oncol 2024; 44:101925. [PMID: 38447277 DOI: 10.1016/j.tranon.2024.101925] [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: 10/02/2023] [Revised: 12/19/2023] [Accepted: 02/28/2024] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND/AIMS Prostate cancer is the most frequently diagnosed cancer among men in the United States and is the second leading cause of cancer-related deaths in men. The incidence of prostate cancer is gradually rising due to factors such as aging demographics and changes in dietary habits. The objective of this study is to investigate the metabolic reprogramming changes occurring in prostate cancer and identify potential therapeutic targets. METHODS In this study, we utilized single-cell sequencing to comprehensively characterize the alterations in metabolism and the regulatory role of transcription factors in various subtypes of prostate cancer. RESULTS In comparison to benign prostate tissue, prostate cancer displayed substantial metabolic variations, notably exhibiting heightened activity in fatty acid metabolism and cholesterol metabolism. This metabolic reprogramming not only influenced cellular energy utilization but also potentially impacted the activity of the androgen receptor (AR) pathway through the synthesis of endogenous steroid hormones. Through our analysis of transcription factor activity, we identified the crucial role of SREBPs, which are transcription factors associated with lipid metabolism, in prostate cancer. Encouragingly, the inhibitor Betulin effectively suppresses prostate cancer growth, highlighting its potential as a therapeutic agent for prostate cancer treatment.
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Affiliation(s)
- Guojiang Wei
- Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China; Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China.
| | - Hongcai Zhu
- Department of Medical Oncology, Hanzhong Central Hospital, Hanzhong, Shaanxi 723000, PR China
| | - Yupeng Zhou
- Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China; Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China
| | - Yang Pan
- Department of Urology, Tianjin Medical University General Hospital, Tianjin 300052, PR China
| | - Bocun Yi
- Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China; Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China
| | - Yangkai Bai
- Department of Urology, Hanzhong Central Hospital, Hanzhong, Shaanxi 723000, PR China; Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China.
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Krasilnikov I, Isaev A, Djonovic M, Ivanov A, Romanovskaya-Romanko E, Stukova M, Zverev V. Transformative vaccination: A pentavalent shield against COVID-19 and influenza with betulin-based adjuvant for enhanced immunity. Vaccine 2024; 42:2191-2199. [PMID: 38508927 DOI: 10.1016/j.vaccine.2023.11.057] [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: 07/17/2023] [Revised: 10/23/2023] [Accepted: 11/28/2023] [Indexed: 03/22/2024]
Abstract
The development of an effective combined vaccine represents a crucial strategy for preventing outbreaks of infectious diseases and reducing the burden on healthcare resources. Developing a combined vaccine against both influenza and the coronavirus is a promising approach, but it is still in the early stages of development. This paper reports on a novel combined pentavalent candidate vaccine that has shown promising results in mice, with statistically significant differences in mean antibody titer against the coronavirus and the influenza antigens compared to placebo. We have shown that the coronavirus antigen is capable of inducing an immune response autonomously, regardless of the presence of the influenza antigens in a combined vaccine. On the other hand, the presence of the coronavirus antigen in a combined vaccine showed to enhance the immune response against some of the studied influenza antigens, suggesting that these antigens may act in synergy and elicit an enhanced immune response. The absence of dose-dependent difference in mean antibody titer within the same antigenic groups of vaccine preparations suggested that even small amounts of the coronavirus and the influenza antigens could induce an immune response just as good as high-dose vaccine preparations, which certainly has important safety and cost implications. The vaccine is soon to be ready for clinical trials and mass production.
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Affiliation(s)
- Igor Krasilnikov
- Biotechnology Developments JSC, Moscow, Russia; The Human Stem Cells Institute, Moscow, Russia.
| | - Artur Isaev
- The Human Stem Cells Institute, Moscow, Russia.
| | - Milana Djonovic
- Biotechnology Developments JSC, Moscow, Russia; The Human Stem Cells Institute, Moscow, Russia; Mayo Clinic, Rochester, USA.
| | | | | | - Marina Stukova
- Smorodintsev Research Institute of Influenza, St. Petersburg, Russia.
| | - Vitaly Zverev
- Mechnikov Research Institute of Vaccines and Sera, St. Petersburg, Russia.
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Farzan M, Farzan M, Shahrani M, Navabi SP, Vardanjani HR, Amini-Khoei H, Shabani S. Neuroprotective properties of Betulin, Betulinic acid, and Ursolic acid as triterpenoids derivatives: a comprehensive review of mechanistic studies. Nutr Neurosci 2024; 27:223-240. [PMID: 36821092 DOI: 10.1080/1028415x.2023.2180865] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Cognitive deficits are the main outcome of neurological disorders whose occurrence has risen over the past three decades. Although there are some pharmacologic approaches approved for managing neurological disorders, it remains largely ineffective. Hence, exploring novel nature-based nutraceuticals is a pressing need to alleviate the results of neurodegenerative diseases, such as Alzheimer's disease (AD) and other neurodegenerative disorders. Some triterpenoids and their derivates can be considered potential therapeutics against neurological disorders due to their neuroprotective and cognitive-improving effects. Betulin (B), betulinic acid (BA), and ursolic acid (UA) are pentacyclic triterpenoid compounds with a variety of biological activities, including antioxidative, neuroprotective and anti-inflammatory properties. This review focuses on the therapeutic efficacy and probable molecular mechanisms of triterpenoids in damage prevention to neurons and restoring cognition in neurodegenerative diseases. Considering few studies on this concept, the precise mechanisms that mediate the effect of these compounds in neurodegenerative disorders have remained unknown. The findings can provide sufficient information about the advantages of these compounds against neurodegenerative diseases.
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Affiliation(s)
- Mahan Farzan
- Student Research Committee, Shahrekord University of Medical Sciences, Shahrekord, Iran
- PhytoPharmacology Interest Group (PPIG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Mahour Farzan
- Student Research Committee, Shahrekord University of Medical Sciences, Shahrekord, Iran
- Neuroscience Research Group (NRG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Mehrdad Shahrani
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Seyedeh Parisa Navabi
- Persian Gulf Physiology Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hossien Rajabi Vardanjani
- Department of Pharmacology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hossein Amini-Khoei
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Sahreh Shabani
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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Dasila K, Pandey A, Sharma A, Samant SS, Singh M. Endophytic fungi from Himalayan silver birch as potential source of plant growth enhancement and secondary metabolite production. Braz J Microbiol 2024; 55:557-570. [PMID: 38265571 PMCID: PMC10920537 DOI: 10.1007/s42770-024-01259-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 01/10/2024] [Indexed: 01/25/2024] Open
Abstract
Mountain biodiversity is under unparalleled pressure due to climate change, necessitating in-depth research on high-altitude plant's microbial associations which are crucial for plant survival under stress conditions. Realizing that high-altitude tree line species of Himalaya are completely unexplored with respect to the microbial association, the present study aimed to elucidate plant growth promoting and secondary metabolite producing potential of culturable endophytic fungi of Himalayan silver birch (Betula utilis D. Don). ITS region sequencing revealed that the fungal isolates belong to Penicillium species, Pezicula radicicola, and Paraconiothyrium archidendri. These endophytes were psychrotolerant in nature with the potential to produce extracellular lytic activities. The endophytes showed plant growth promoting (PGP) traits like phosphorus solubilization and production of siderophore, indole acetic acid (IAA), and ACC deaminase. The fungal extracts also exhibited antagonistic potential against bacterial pathogens. Furthermore, the fungal extracts were found to be a potential source of bioactive compounds including the host-specific compound-betulin. Inoculation with fungal suspension improved seed germination and biomass of soybean and maize crops under net house conditions. In vitro PGP traits of the endophytes, supported by net house experiments, indicated that fungal association may support the growth and survival of the host in extreme cold conditions.
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Affiliation(s)
- Khashti Dasila
- Center for Environmental Assessment and Climate Change, G.B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora, 263643, Uttarakhand, India
| | - Anita Pandey
- Center for Environmental Assessment and Climate Change, G.B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora, 263643, Uttarakhand, India.
- Department of Biotechnology, Graphic Era (Deemed to Be University), Bell Road, Clement Town, Dehradun, 248002, Uttarakhand, India.
| | - Avinash Sharma
- National Centre for Microbial Resource, National Centre for Cell Science, Pune, 41107, Maharashtra, India
- School of Agriculture, Graphic Era Hill University, Dehradun, 248002, India
| | - Sher S Samant
- Himalayan Forest Research Institute, Conifer Campus, Panthaghati, Shimla, 171013, Himachal Pradesh, India
| | - Mithilesh Singh
- Center for Environmental Assessment and Climate Change, G.B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora, 263643, Uttarakhand, India.
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Dash UC, Swain SK, Jena AB, Dandapat J, Sahoo AK. The ameliorative effect of Piper trioicum in attenuating cognitive deficit in scopolamine induced neurotoxicity in experimental rats. J Ethnopharmacol 2024; 318:116911. [PMID: 37451488 DOI: 10.1016/j.jep.2023.116911] [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: 04/24/2023] [Revised: 07/08/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In traditional system of medicine, Piper species, or its components are widely used to treat many diseases including memory improvement. One of the wild species Piper trioicum Roxb. (Piperaceae) is found in South Asian countries. The whole plant is used as folk medicine to improve memory. AIM OF THE STUDY To our knowledge, no previous research has investigated the neuroprotective activities of P. trioicum. So, we studied the ameliorative effect of P. trioicum in attenuating cognitive deficit in scopolamine induced neurotoxicity in experimental rats. MATERIALS AND METHODS Wistar rats were exposed to scopolamine (3 mg/kg, i. p.) for 14 consecutive days, and the effect of P. trioicum (HAPT; oral, 300, 400 mg/kg) on scopolamine-invoked neurotoxicity in brain were studied. During the experimental period, behaviour analyses of rats were observed 30 min post-drug administration. The role of antioxidants of HAPT in scavenging cellular oxygen/peroxyl radicals were studied. Acetylcholinesterase and butyrylcholinesterase inhibitions, and mode of inhibition kinetics of HAPT were studied. Pathogenic cellular oxidative (MDA, GSH, SOD, and CAT), DNA damage (8-oxodG), neurochemical (acetyl- and, butyryl-cholinesterase), β-secretase (BACE-1 and 2), MAPτ, and neuroinflammation (IL-6, TNF-α) biomarkers in extension to the histopathological observation of brain cortex were studied. GC-MS/MS analysis was carried out to investigate the presence of bioactive constituents in HAPT. RESULTS HAPT, a rich source of phenol and flavonoid type antioxidants were responsible in quenching oxygen/peroxyl radicals and protected the cellular membrane, and lipoproteins against ROS in DPPH, ORAC, and CAPe tests. HAPT inhibited acetylcholinesterase and butyrylcholinesterase activities, and showed competitive-inhibition (reversible) towards cholinesterase activities. HAPT-400 significantly improved the learning and memory-impairment by restoring oxidative MDA, GSH, SOD, CAT, and DNA damage (8-oxodG) markers of serum, and cortex. It also improved acetyl- and, butyryl-cholinesterase, β-secretase, and MAPτ level in brain by restoring proinflammatory cytokines IL-6, and TNF-α indicators in neurotoxic rats. GC-MS/MS reported therapeutic significance active compounds were molecular-docked towards target proteins, found that proscillaridin showed the highest affinity towards AChE, BuChE, BACE1, and BACE2 with binding energy of ΔGb -9.1, ΔGb -10.2, ΔGb -11.4 and ΔGb -11.5 Kcal/mol, respectively. Cymarin and morphine-3-glucuronide showed the second highest binding affinity towards AChE (ΔGb -8.8) and BuChE (ΔGb -10.0), respectively. In BACE-1, betulin showed the second highest binding affinity ΔGb -10.7 Kcal/mol and in BACE-2, morphine-3-glucuronide showed the second highest binding affinity ΔGb -9.8 Kcal/mol. CONCLUSIONS Synergistic impact of proscillaridin, Cymarin, morphine-3-glucuronide, betulin like compounds in HAPT improved memory impairment, healing of tissue architecture of cortex with the restoration of neurochemical, neuroinflammation, and oxidative indicators in neurotoxic rats.
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Affiliation(s)
- Umesh Chandra Dash
- Regional Plant Resource Centre, Medicinal & Aromatic Plant Division, Forest & Environment Department, Govt. of Odisha, Nayapalli, Bhubaneswar, 751015, India
| | - Sandeep Kumar Swain
- Regional Plant Resource Centre, Medicinal & Aromatic Plant Division, Forest & Environment Department, Govt. of Odisha, Nayapalli, Bhubaneswar, 751015, India
| | - Atala Bihari Jena
- Department of Biotechnology, Utkal University, Vani Vihar, Bhubaneswar, 751004, India
| | - Jagneshwar Dandapat
- Department of Biotechnology, Utkal University, Vani Vihar, Bhubaneswar, 751004, India
| | - Atish Kumar Sahoo
- Regional Plant Resource Centre, Medicinal & Aromatic Plant Division, Forest & Environment Department, Govt. of Odisha, Nayapalli, Bhubaneswar, 751015, India.
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Danaei N, Sadeghi H, Asfarm A, Rostamzadeh D, Panahi kokhdan E, Sadeghi H, Rahimi N. Betulin-rich hydroalcoholic extract of Daphne oleoides attenuates bleomycin-induced pulmonary fibrosis in rat. Heliyon 2023; 9:e19236. [PMID: 37664747 PMCID: PMC10469556 DOI: 10.1016/j.heliyon.2023.e19236] [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: 04/26/2023] [Revised: 07/30/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023] Open
Abstract
Background and objective Pulmonary fibrosis (PF) is a chronic and progressive respiratory disease representing the final stage of lung inflammatory disorders. Reactive oxygen species (ROS), an essential factor in the formation and progression of pulmonary fibrosis, are a significant adverse effect of Bleomycin (BLM). Antioxidant activities have been found in Daphne oleoides. In this study, we attempted to explore the function of hydroalcoholic extract of Daphne oleoides (D. oleoides) and Betulin in inhibiting bleomycin (BLM)-induced pulmonary fibrosis in rat". Materials and methods The current experimental study used 36 male Wistar rats (180-220). Following a random process, the animals were divided into six groups six (n = 6). Group, I (the control group) received normal saline, while Group II (the hazardous group) received intratracheal BLM (7.5 units per kg). Following the administration of BLM, Groups V and VI received daily doses of vitamin E (500 mg/kg/d, p.o.) and Betulin (10 mg kg/d, p.o.), whereas Groups III and IV received daily doses of Daphne oleoides extract (300 and 600 mg/kg/d, p.o.). Then, blood samples from the hearts of the animals were taken to assess the plasma concentrations of nitric oxide (NO) and malondialdehyde (MDA). Finally, the rats were euthanized, and the lung tissues were taken out for histological analysis and assessments of the levels of lung hydroxyproline (HP), ferric-reducing ability (FRAP), NO, Glutathione Concentration (GSH), thiol content (tSH) and MDA. Findings Elevated lung index, lung hydroxyproline, NO, and MDA plasma levels, and a reduction in total body thiol content (tSH) in the group receiving BLM were evidence of pulmonary toxicity. Treatment with D. oleoides extracts, Betulin, and Vit E, especially at 600 mg/kg, led to a marked reduction in the above parameters compared with the BLM-received group (p < 0.01). Histological Analysis of the BLM-treated group showed a considerable Lung injury with interstitial infiltration, collapsed alveolar spaces, and alveolar septal thickening. These changes were mitigated with D. oleoides 600, Betulin-, and vitamin E. These changes were mitigated with D. oleoides 600, Betulin-, and vitamin E. Conclusion These findings suggest that D. oleoides and Betulin prevent bleomycin-induced lung fibrosis in rats by decreasing inflammatory and antioxidant markers. Daphne oleoides, therefore, have the potential to be used therapeutically to treat pulmonary fibrosis.
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Affiliation(s)
- Nazanin Danaei
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Heibatollah Sadeghi
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Arash Asfarm
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Davoud Rostamzadeh
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | | | - Hossein Sadeghi
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Negin Rahimi
- Tehran University of Medical Sciences, Tehran, Iran
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Błaszczyk M, Kozioł A, Palko-Łabuz A, Środa-Pomianek K, Wesołowska O. Modulators of cellular cholesterol homeostasis as antiproliferative and model membranes perturbing agents. Biochim Biophys Acta Biomembr 2023; 1865:184163. [PMID: 37172710 DOI: 10.1016/j.bbamem.2023.184163] [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: 10/31/2022] [Revised: 04/14/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023]
Abstract
Cholesterol is an important component of mammalian cell membranes affecting their fluidity and permeability. Together with sphingomyelin, cholesterol forms microdomains, called lipid rafts. They play important role in signal transduction forming platforms for interaction of signal proteins. Altered levels of cholesterol are known to be strongly associated with the development of various pathologies (e.g., cancer, atherosclerosis and cardiovascular diseases). In the present work, the group of compounds that share the property of affecting cellular homeostasis of cholesterol was studied. It contained antipsychotic and antidepressant drugs, as well as the inhibitors of cholesterol biosynthesis, simvastatin, betulin, and its derivatives. All compounds were demonstrated to be cytotoxic to colon cancer cells but not to non-cancerous cells. Moreover, the most active compounds decreased the level of free cellular cholesterol. The interaction of drugs with raft-mimicking model membranes was visualized. All compounds reduced the size of lipid domains, however, only some affected their number and shape. Membrane interactions of betulin and its novel derivatives were characterized in detail. Molecular modeling indicated that high dipole moment and significant lipophilicity were characteristic for the most potent antiproliferative agents. The importance of membrane interactions of cholesterol homeostasis-affecting compounds, especially betulin derivatives, for their anticancer potency was suggested.
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Affiliation(s)
- Maria Błaszczyk
- Department of Biophysics and Neuroscience, Wroclaw Medical University, ul. Chalubinskiego 3a, 50-368 Wroclaw, Poland.
| | - Agata Kozioł
- Department of Biochemistry and Immunochemistry, Wroclaw Medical University, Sklodowskiej-Curie 48/50, 50-369 Wroclaw, Poland.
| | - Anna Palko-Łabuz
- Department of Biophysics and Neuroscience, Wroclaw Medical University, ul. Chalubinskiego 3a, 50-368 Wroclaw, Poland.
| | - Kamila Środa-Pomianek
- Department of Biophysics and Neuroscience, Wroclaw Medical University, ul. Chalubinskiego 3a, 50-368 Wroclaw, Poland.
| | - Olga Wesołowska
- Department of Biophysics and Neuroscience, Wroclaw Medical University, ul. Chalubinskiego 3a, 50-368 Wroclaw, Poland.
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Szlasa W, Ślusarczyk S, Nawrot-Hadzik I, Abel R, Zalesińska A, Szewczyk A, Sauer N, Preissner R, Saczko J, Drąg M, Poręba M, Daczewska M, Kulbacka J, Drąg-Zalesińska M. Betulin and Its Derivatives Reduce Inflammation and COX-2 Activity in Macrophages. Inflammation 2023; 46:573-583. [PMID: 36282372 PMCID: PMC10024662 DOI: 10.1007/s10753-022-01756-4] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/01/2022] [Accepted: 10/12/2022] [Indexed: 11/05/2022]
Abstract
Betulin is a heavily studied natural compound for its use as an anticancer or pro-regenerative agent. The structural similarity between betulin to steroids gives rise to the idea that the substance may as well act as an anti-inflammatory drug. This study is the first to describe the anti-inflammatory properties of betulinic acid, betulin, and its derivatives with amino acids 1,4-diaminebutane (Dab), 1,3-diaminepropane (Dap), Ornithine (Orn), and lysine (Lys) on murine macrophages from lymphoma site. The compounds were compared to dexamethasone. To establish the response of the macrophages to the natural compounds, we tested the viability as well as sensitivity to the inflammatory signaling (IFNγR). IL-6 secretory properties and HSP-70 content in the cells were examined. Furthermore, we characterized the effects of compounds on the inhibition of cyclooxygenase-2 (COX-2) activity both in the enzymatic assays and molecular docking studies. Then, the changes in COX-2 expression after betulin treatment were assessed. Betulin and betulinic acid are the low-cytotoxicity compounds with the highest potential to decrease inflammation via reduced IL-6 secretion. To some extent, they induce the reorganization of IFNγR with nearly no effect on COX-2 activity. Conversely, Bet-Orn and Bet-Lys are highly cytotoxic and induce the aggregation of IFNγR. Besides, Bet-Lys reduces the activity of COX-2 to a higher degree than dexamethasone. Bet-Orn is the only one to increase the HSP-70 content in the macrophages. In case of IL-6 reduction, all compounds were more potent than dexamethasone.
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Affiliation(s)
- Wojciech Szlasa
- Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland.
| | - Sylwester Ślusarczyk
- Department of Pharmaceutical Biology and Biotechnology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
| | - Izabela Nawrot-Hadzik
- Department of Pharmaceutical Biology and Biotechnology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
| | - Renata Abel
- Department of Pharmaceutical Biology and Biotechnology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
- Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, Berlin, Germany, Philippstrasse 12, 10115, Berlin, Germany
| | | | - Anna Szewczyk
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
| | - Natalia Sauer
- Faculty of Pharmacy, Wrocław Medical University, Wroclaw, Poland
| | - Robert Preissner
- Science-IT and Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, Philippstrasse 12, 10115, Berlin, Germany
| | - Jolanta Saczko
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland
| | - Marcin Drąg
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wroclaw, Poland
| | - Marcin Poręba
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wroclaw, Poland
| | - Małgorzata Daczewska
- Department of Animal Developmental Biology, Institute of Experimental Biology, University of Wroclaw, Wroclaw, Poland
| | - Julita Kulbacka
- Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland.
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Burkhanova TM, Krysantieva AI, Babashkina MG, Konyaeva IA, Monina LN, Goncharenko AN, Safin DA. In silico analyses of betulin: DFT studies, corrosion inhibition properties, ADMET prediction, and molecular docking with a series of SARS-CoV-2 and monkeypox proteins. Struct Chem 2022; 34:1-12. [PMID: 36320318 PMCID: PMC9607775 DOI: 10.1007/s11224-022-02079-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 10/06/2022] [Indexed: 12/04/2022]
Abstract
We report detailed computational studies of betulin - a pentacyclic naturally occuring triterpene, which is a precursor for a broad family of biologically active derivatives. The structure, electronic, and optical properties of betulin were studied by the density functional theory (DFT) calculations in gas phase. The reactivity and the reactive centers of betulin were revealed through its global reactivity descriptors and molecular electrostatic potential (MEP). The DFT calculations were also applied to probe betulin as a potential corrosion inhibitor for some important metals used in implants. Electron charge transfer from the molecule of betulin to the surface of all the examined metals (Ti, Fe, Zr, Co, Cu, Cr, Ni, Mn, Mo, Zn, Al, W, Ag, Au) was revealed, of which the best results were obtained for Ni, Au and Co. Bioavailability, druggability as well as absorption, distribution, metabolism, excretion and toxicity (ADMET) properties of betulin were evaluated using the SwissADME, BOILED-Egg and ProTox-II tools. Molecular docking was applied to examine the influence of the title compound on a series of the SARS-CoV-2 proteins as well as one of the monkeypox proteins. It was established that betulin is active against all the applied proteins with the best binding affinity with papain-like protease (PLpro) and spike protein (native) of SARS-CoV-2. The title compound is also active against the studied monkeypox protein. Interaction of betulin with papain-like protease (PLpro) was studied using molecular dynamics simulations.
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Affiliation(s)
- Tatyana M. Burkhanova
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020 Russian Federation
- Scientific and Educational and Innovation Center for Chemical and Pharmaceutical Technologies, Ural Federal University Named After the First President of Russia B.N. Yeltsin, Mira Str. 19, Ekaterinburg, 620002 Russian Federation
| | - Alena I. Krysantieva
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020 Russian Federation
| | - Maria G. Babashkina
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020 Russian Federation
| | - Irina A. Konyaeva
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020 Russian Federation
| | - Lyudmila N. Monina
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020 Russian Federation
| | - Anastasiya N. Goncharenko
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020 Russian Federation
| | - Damir A. Safin
- Advanced Materials for Industry and Biomedicine Laboratory, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020 Russian Federation
- Scientific and Educational and Innovation Center for Chemical and Pharmaceutical Technologies, Ural Federal University Named After the First President of Russia B.N. Yeltsin, Mira Str. 19, Ekaterinburg, 620002 Russian Federation
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Hossain R, Kim KI, Jin F, Lee HJ, Lee CJ. Betulin, an Anti-Inflammatory Triterpenoid Compound, Regulates MUC5AC Mucin Gene Expression through NF-kB Signaling in Human Airway Epithelial Cells. Biomol Ther (Seoul) 2022; 30:540-545. [PMID: 36203319 DOI: 10.4062/biomolther.2022.093] [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: 07/06/2022] [Revised: 08/11/2022] [Accepted: 08/16/2022] [Indexed: 11/05/2022] Open
Abstract
Betulin is a triterpenoid natural product contained in several medicinal plants including Betulae Cortex. These medicinal plants have been used for controlling diverse inflammatory diseases in folk medicine and betulin showed anti-inflammatory, antioxidative, and anticancer activities. In this study, we tried to examine whether betulin exerts a regulative effect on the gene expression of MUC5AC mucin under the status simulating a pulmonary inflammation, in human airway epithelial cells. Confluent NCI-H292 cells were pretreated with betulin for 30 min and then stimulated with phorbol 12-myristate 13-acetate (PMA) for 24 h or the indicated periods. The MUC5AC mucin mRNA expression and mucin glycoprotein production were measured by reverse transcription - polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA), respectively. To elucidate the action mechanism of betulin, effect of betulin on PMA-induced nuclear factor kappa B (NF-kB) signaling pathway was also investigated by western blot analysis. The results were as follows: 1) Betulin significantly suppressed the production of MUC5AC mucin glycoprotein and down-regulated MUC5AC mRNA expression induced by PMA in NCI-H292 cells. 2) Betulin inhibited NF-κB activation stimulated by PMA. Suppression of inhibitory kappa B kinase (IKK) by betulin led to the inhibition of the phosphorylation and degradation of inhibitory kappa B alpha (IκBα), and the nuclear translocation of NF-κB p65. This, in turn, led to the down-regulation of MUC5AC glycoprotein production in NCI-H292 cells. These results suggest betulin inhibits the gene expression of mucin through regulation of NF-kB signaling pathway, in human airway epithelial cells.
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Affiliation(s)
- Rajib Hossain
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Kyung-Il Kim
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea.,Brain Korea 21 FOUR Project for Medical Science, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Fengri Jin
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea.,Brain Korea 21 FOUR Project for Medical Science, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Hyun Jae Lee
- Smith Liberal Arts College and Department of Addiction Science, Graduate School, Sahmyook University, Seoul 01795, Republic of Korea
| | - Choong Jae Lee
- Department of Pharmacology, School of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea.,Brain Korea 21 FOUR Project for Medical Science, Chungnam National University, Daejeon 35015, Republic of Korea
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11
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Vikhe S, Kunkulol R, Raut D. Antidiabetic and antihyperlipidemic effects of crude fractions and isolated compound from Striga orobanchioides Benth on streptozotocin induced diabetic rats. J Ayurveda Integr Med 2022; 13:100618. [PMID: 36030594 PMCID: PMC9436756 DOI: 10.1016/j.jaim.2022.100618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 06/08/2022] [Accepted: 06/20/2022] [Indexed: 11/27/2022] Open
Abstract
Background Striga orobanchioides Benth is a traditionally used Ayurvedic medicinal plant for the treatment of diabetes. Scientific validation of the claim is studied in this research. The significant bioactivity of the plant components is obligatory for its use in medicine. Objective The present work is to extract bioactive fractions and chemicals, biological activity of the chemicals and to identify potentially bioactive compound(s) from ethanolic extract of the plant. Materials and methods Ethanolic extract of the authenticated plant was fractionated and subjected to in vitro and in vivo antidiabetic and antihyperlipidemic activity. In vitro α-amylase and α-glucosidase enzyme activity was carried out on digestive enzyme. Streptozotocin (STZ) induced diabetes mellitus in rats model was preferred for in vivo activity where antidiabetic parameters body weight, urine volume, blood glucose level, glycosylated hemoglobin, serum insulin, liver glycogen and lipid profile as an antihypertensive parameters were assessed. Isolation of bioactive compounds was carried out by chromatographic techniques and identification of the compound was done by FTIR, Mass spectrometry and NMR spectroscopy. The molecular docking study with α-amylase, α-glucosidase, dipeptidyl peptidase-IV (DPP-IV), glucokinase (GK) as diabetic markers and on 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) and Niemann-Pick C1-Like 1 (NPC1L1) was carried out. Results Ethyl acetate-methanol fraction of the ethanol extract showed presence of pentacyclic triterpenoids (81.5% w/w) in GC-HRMS study. Spectroscopic analysis of the isolated compound revealed presence betulin. In vitro antidiabetic activity pointed out robust inhibition of the digestive enzymes by the fractions known as bioactive fraction and betulin. Betulin at a dose of 40 mg/kg treated group showed significant improvement of diabetic conditions. The gene expression studies revealed that betulin in 40 mg/kg dose has positive effects for carbohydrate metabolism in liver, lowers the hepatic inflammation and increases insulin secretion. The plant compound demonstrated significant inhibitory potential on α-amylase, α-glucosidase, DPP-IV and GK enzymes in silico. Conclusion The biological study reveals that betulin could dominate the succession of diabetes in dose dependent manner. The plant and specifically Betulin exerts a significant antidiabetic and antihyperlipidemic effects that are more possibly through stimulation of insulin secretion, increase in PPAR-α level with an increase in GRIA2 mRNA expression.
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Affiliation(s)
- Sunayana Vikhe
- Department of Pharmacognosy, Pravara Rural College of Pharmacy, Loni, 413736, Maharashtra, India.
| | - Rahul Kunkulol
- Department of Pharmacology, Pravara Institute of Medical Sciences, Loni, 413736, Maharashtra, India
| | - Dipak Raut
- Department of Pharmacognosy, Amrutvahini College of Pharmacy, Sangamner, 422608, Maharashtra, India
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Kozubek M, Hoenke S, Schmidt T, Deigner HP, Al-Harrasi A, Csuk R. Synthesis and cytotoxicity of betulin and betulinic acid derived 30-oxo-amides. Steroids 2022; 182:109014. [PMID: 35314417 DOI: 10.1016/j.steroids.2022.109014] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 10/18/2022]
Abstract
Betulin and betulinic acid derived 30-oxo-amides were prepared by hydroboration, subsequent oxidation and amidation; these novel compounds were screened for their cytotoxic activity by SRB assays. All of the compounds showed significant cytotoxic activity for different human tumor cell lines. Small changes in the structure, however, resulted in significant changes in the cytotoxicity of the compounds. Of special interest were compounds 11 and 12, each holding an extra ethylenediamine moiety. These C-30 amides which showed low EC50 values, and both of them acted mainly by apoptosis.
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Affiliation(s)
- Marie Kozubek
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Sophie Hoenke
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Theresa Schmidt
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Hans-Peter Deigner
- Furtwangen University, Institute of Precision Medicine, Medical and Life Science Faculty, Jakob-Kienzle-Str. 17, D-78054 Villigen, Schwenningen, Germany
| | - Ahmed Al-Harrasi
- University of Nizwa, Chair of Oman's Medicinal Plants and Marine Natural Products, P.O. Box 33, PC 616, Birkat Al-Mauz, Nizwa, Oman
| | - René Csuk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
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Razwinani M, Motaung KS. The influence of friedelin, resinone, tingenone and betulin of compounds on chondrogenic differentiation of porcine adipose-derived mesenchymal stem cells (pADMSCs). Biochimie 2022; 196:234-242. [PMID: 35121053 DOI: 10.1016/j.biochi.2022.01.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 01/24/2022] [Accepted: 01/28/2022] [Indexed: 12/11/2022]
Abstract
The study investigated the influence of friedelin, resinone, tingenone and betulin plant-based secondary metabolite compounds on cellular proliferation, extracellular matrix (ECM) components synthesis, expression of chondrogenic markers and maturation of differentiated chondrocytes (cell proliferation and hypertrophy) in porcine adipose-derived mesenchymal stem cells (pADMSCs) undergoing chondrogenic differentiation. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) and Cyquant assays were used to determine cell proliferation, viability, and total cellular DNA, DMMB (Dimethyl methylene blue) was used for glycosaminoglycan (GAG) synthesis, RT-qPCR for gene expression and histology combined with immunohistochemistry for cartilage ECM proteoglycan deposition. The MTT results showed that friedelin at 37 μM, resinone at 36 μM and betulin at 18 μM with cell viability of above 100% compared to control. Tingenone at 37 μM showed cell viability of about 76%. These concentrations were considered the most effective with no toxicity effect on the cells and were further analysed with TGF-β3 (10 ng/mL) as a positive control. The results showed a high synthesis of DNA with friedelin on day 14. There was up-regulation of SOX 9, Col II and Col X with friedelin and resinone at day 14 with the significance of p < 0.01. Pellet from friedelin, resinone and tingenone showed more staining of the matrix for Safranin-O and Toluidine blue at day 14. Immunohistostaining of collagen type X (COL-10) showed more stain intensity at friedelin and resinone on day 21. These results provided new knowledge on the potential use of natural isolated secondary metabolites compounds as inducers for chondrogenic and bone differentiation.
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Affiliation(s)
- Mapula Razwinani
- Durban University of Technology, Technology Transfer and Innovation, Steve Biko Campus, Durban, South Africa
| | - Keolebogile Shirley Motaung
- Durban University of Technology, Technology Transfer and Innovation, Steve Biko Campus, Durban, South Africa.
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14
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Khan A, Unnisa A, Sohel M, Date M, Panpaliya N, Saboo SG, Siddiqui F, Khan S. Investigation of phytoconstituents of Enicostemma littorale as potential glucokinase activators through molecular docking for the treatment of type 2 diabetes mellitus. In Silico Pharmacol 2022; 10:1. [PMID: 34926125 DOI: 10.1007/s40203-021-00116-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 11/25/2021] [Indexed: 11/27/2022] Open
Abstract
Glucokinase (GK) is an enzyme involved in synthesising glucose into glucose-6 phosphate and serves a crucial function in glucose sensing. Therefore, agents that induce GK activation could be used to treat T2DM. The present work has been carried out to investigate the GK activation potential of phytoconstituents of Enicostemma littorale through molecular docking. All the phytoconstituents have been screened through the Lipinski rule of 5, Veber's rule, and ADMET properties. From these initial screening, only Apigenin, Ferulic acid, Genkwanin, p-coumaric acid, Protocatechuic acid, Syringic acid, and Vanillic acid have been selected to perform molecular docking studies. The binding free energy and binding mode of the native ligand in the allosteric site of the enzyme have been considered the reference for the other molecules' validation. The native ligand has exhibited - 7.2 kcal/mol binding free energy, whereas; it has formed four hydrogen bonds with THR-228, LYS-169, ASP-78, and GLY-81. Based on these findings, the interactions of phytoconstituents have been justified. Apigenin, genkwanin, and swertiamarin exhibited - 8.7, - 7.5, and - 8.3 kcal/mol binding free energy, respectively, which indicates better enzyme activation than the native ligand. Swertiamarin has formed 08 hydrogen bonds with allosteric amino acid residues, which confirms the excellent enzyme activation by these phytoconstituents. We concluded that if we can isolate and consume the exact active phytoconstituents (GK activators) from this plant, we can use them effectively to treat T2DM. More GK activators can be developed by considering them as a natural lead moiety.
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Pęcak P, Orzechowska B, Chrobak E, Boryczka S. Novel betulin dicarboxylic acid ester derivatives as potent antiviral agents: Design, synthesis, biological evaluation, structure-activity relationship and in-silico study. Eur J Med Chem 2021; 225:113738. [PMID: 34425312 DOI: 10.1016/j.ejmech.2021.113738] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/29/2021] [Accepted: 08/01/2021] [Indexed: 11/20/2022]
Abstract
The search for new methods of antiviral therapy is primarily focused on the use of substances of natural origin. In this context, a triterpene compound, betulin 1, proved to be a good starting point for derivatization. Thirty-eight betulin acid ester derivatives were synthetized, characterized, and tested against DNA and RNA viruses. Several compounds exhibited 4- to 11-fold better activity against Enterovirus E (compound 5 EC50: 10.3 μM) and 3- to 6-fold better activity against Human alphaherpesvirus 1 (HHV-1; compound 3c EC50: 17.2 μM). Time-of-addition experiments showed that most of the active compounds acted in the later steps of the virus replication cycle (e.g., nucleic acid/protein synthesis). Further in-silico analysis confirmed in-vitro data and demonstrated that interactions between HHV-1 DNA polymerase and the most active compound, 3c, were more stable than interactions with the parent non-active betulin 1.
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Dou JY, Jiang YC, Hu ZH, Yao KC, Yuan MH, Bao XX, Zhou MJ, Liu Y, Li ZX, Lian LH, Nan JX, Wu YL. Betulin Targets Lipin1/2-Meidated P2X7 Receptor as a Therapeutic Approach to Attenuate Lipid Accumulation and Metaflammation. Biomol Ther (Seoul) 2021; 30:246-256. [PMID: 34815367 PMCID: PMC9047492 DOI: 10.4062/biomolther.2021.136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/19/2021] [Accepted: 11/01/2021] [Indexed: 11/06/2022] Open
Abstract
The present study focused on the potential mechanism of betulin (BT), a pentacyclic triterpenoid isolated from the bark of white birch (Betula pubescens), against chronic alcohol-induced lipid accumulation and metaflammation. AML-12 and RAW 264.7 cells were administered ethanol (EtOH), lipopolysaccharide (LPS) or BT. Male C57BL/6 mice were fed Lieber-DeCarli liquid diets containing 5% EtOH for 4 weeks, followed by single EtOH gavage on the last day and simultaneous treatment with BT (20 or 50 mg/kg) by oral gavage once per day. In vitro, MTT showed that 0-25 mM EtOH and 0-25 μM BT had no toxic effect on AML-12 cells. BT could regulate sterolregulatory-element-binding protein 1 (SREBP1), lipin1/2, P2X7 receptor (P2X7r) and NOD-like receptor family, pyrin domains-containing protein 3 (NLRP3) expressions again EtOH-stimulation. Oil Red O staining also indicated that BT significantly reduced lipid accumulation in EtOH-stimulated AML-12 cells. Lipin1/2 deficiency indicated that BT might mediate lipin1/2 to regulate SREBP1 and P2X7r expression and further alleviate lipid accumulation and inflammation. In vivo, BT significantly alleviated histopathological changes, reduced serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) and triglyceride (TG) levels, and regulated lipin1/2, SREBP1, peroxisome proliferator activated receptor α/γ (PPARα/γ) and PGC-1α expression compared with the EtOH group. BT reduced the secretion of inflammatory factors and blocked the P2X7r-NLRP3 signaling pathway. Collectively, BT attenuated lipid accumulation and metaflammation by regulating the lipin1/2-mediated P2X7r signaling pathway.
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Affiliation(s)
- Jia-Yi Dou
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Yu-Chen Jiang
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Zhong-He Hu
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Kun-Chen Yao
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Ming-Hui Yuan
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Xiao-Xue Bao
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Mei-Jie Zhou
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Yue Liu
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Zhao-Xu Li
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Li-Hua Lian
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Ji-Xing Nan
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
| | - Yan-Ling Wu
- Key Laboratory for Traditional Chinese Korean Medicine of Jilin Province, College of Pharmacy, Yanbian University, Yanji, Jilin Province 133002, China
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El-Sherbiny M, Eisa NH, Abo El-Magd NF, Elsherbiny NM, Said E, Khodir AE. Anti-inflammatory/anti-apoptotic impact of betulin attenuates experimentally induced ulcerative colitis: An insight into TLR4/NF-kB/caspase signalling modulation. Environ Toxicol Pharmacol 2021; 88:103750. [PMID: 34597787 DOI: 10.1016/j.etap.2021.103750] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 05/21/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 06/13/2023]
Abstract
Ulcerative colitis (UC) is an inflammatory bowel disease with limited therapeutic management approaches. The present study evaluated the potential therapeutic impact of betulin on acetic acid (AA)-induced UC in rats. UC was induced by intracolonic instillation of AA (3% v/v). Rats were treated with betulin (8 mg/kg, I.P., once daily) four days post AA instillation and for 14 consecutive days. Betulin attenuated AA-induced UC as evidenced by retracted macroscopic scores, serum CRP titre and LDH activity, attenuated histopathological hallmarks of UC including mucosal necrosis, haemorrhage, congestion and inflammatory cells infiltration. Moreover, betulin dampened UC-associated colonic inflammatory load with modulation of TLR4/NF-kB axis and reduction in colonic inflammatory cytokines; TNF-α, IL1β and IL-6. Nevertheless, betulin suppressed colonic apoptosis with reduced colonic caspase-3 and caspase-8 expression. The current findings confirm a beneficial therapeutic impact of betulin against UC. The prospective underlying mechanisms include down-regulation of TLR4/NF-κB and the subsequent downstream signalling pathways.
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Affiliation(s)
- Mohamed El-Sherbiny
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, Riyadh, 71666, Saudi Arabia; Department of Anatomy, Mansoura Faculty of Medicine, Mansoura University, Egypt
| | - Nada H Eisa
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, 35516, Mansoura, Egypt
| | - Nada F Abo El-Magd
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, 35516, Mansoura, Egypt
| | - Nehal M Elsherbiny
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, 35516, Mansoura, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Tabuk, Tabuk, Saudi Arabia.
| | - Eman Said
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, 35516, Mansoura, Egypt.
| | - Ahmed E Khodir
- Department of Pharmacology, Faculty of Pharmacy, Horus University-Egypt, New Damietta, 34518, Egypt
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18
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Dubinin MV, Semenova AA, Ilzorkina AI, Markelova NY, Penkov NV, Shakurova ER, Belosludtsev KN, Parfenova LV. New quaternized pyridinium derivatives of betulin: Synthesis and evaluation of membranotropic properties on liposomes, pro- and eukaryotic cells, and isolated mitochondria. Chem Biol Interact 2021; 349:109678. [PMID: 34600868 DOI: 10.1016/j.cbi.2021.109678] [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: 07/10/2021] [Revised: 09/07/2021] [Accepted: 09/29/2021] [Indexed: 10/20/2022]
Abstract
The present study describes the synthesis of pyridinium derivatives of betulin, including new 4-methyl- and 3,5-methyl-pyridinium analogs, their effect on artificial membrane systems (liposomes), cytotoxicity in models of prokaryotic (E. coli K-12 MG1655) and eukaryotic cells (rat thymocytes), as well as their effect on the functioning of membrane systems of rat liver mitochondria. We have shown that the presence of methyl groups in the pyridine ring of compounds determines the ability of the derivatives to effectively permeabilize the artificial membrane of lecithin liposomes for the fluorescent probe sulforhodamine B. The 4-methyl- and 3,5-methyl-pyridinium analogs inhibit the growth of E. coli K-12 MG1655 and, at the same time, did not have a cytotoxic effect on rat thymocytes. However, in the latter case, we noted a decrease in the mitochondrial potential of cells. The studied compounds reduced the functional activity of mitochondria, suppressing the activity of complexes of the respiratory chain and reducing the membrane potential. In addition, compounds containing methyl groups in the p- and m-positions of the pyridine ring were also able to permeabilize the inner membrane of mitochondria, causing them to swell. In this case, the most lipophilic compound containing two methyl substituents at the m-position of the pyridine fragment was most effective and had a protonophore effect on mitochondria. The paper discusses the dependence of the membranotropic and biological actions of the quaternized pyridine derivatives of betulin on their structure and lipophilicity.
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Affiliation(s)
- Mikhail V Dubinin
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El, 424001, Russia.
| | - Alena A Semenova
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El, 424001, Russia
| | - Anna I Ilzorkina
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region, 142290, Russia
| | - Natalia Y Markelova
- Institute of Cell Biophysics, Russian Academy of Sciences, PSCBR RAS, Institutskaya 3, Pushchino, Moscow Region, 142290, Russia
| | - Nikita V Penkov
- Institute of Cell Biophysics, Russian Academy of Sciences, PSCBR RAS, Institutskaya 3, Pushchino, Moscow Region, 142290, Russia
| | - Elvira R Shakurova
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, Prospekt Oktyabrya 141, Ufa, Republic of Bashkortostan, 450075, Russia
| | - Konstantin N Belosludtsev
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El, 424001, Russia; Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region, 142290, Russia
| | - Lyudmila V Parfenova
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, Prospekt Oktyabrya 141, Ufa, Republic of Bashkortostan, 450075, Russia
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Eisa NH, El-Sherbiny M, Abo El-Magd NF. Betulin alleviates cisplatin-induced hepatic injury in rats: Targeting apoptosis and Nek7-independent NLRP3 inflammasome pathways. Int Immunopharmacol 2021; 99:107925. [PMID: 34217992 DOI: 10.1016/j.intimp.2021.107925] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 02/07/2023]
Abstract
Cisplatin is a chemotherapeutic agent that induces multiorgan toxicity side effect due to induction of inflammation, apoptosis and disruption of intracellular antioxidant pathways. Betulin is a natural triterpenoid that has been shown to counteract cisplatin-induced nephrotoxicity. In this study, we investigated the ameliorative effect of betulin against cisplatin-promoted hepatotoxicity in rats. Moreover, we studied the molecular mechanism underlying betulin's effect. Single intraperitoneal injection (i.p.) of 10 mg/kg of cisplatin, was used to induce acute liver injury in rats. To assess betulin effect, a dose of 8 mg/kg (i.p.) was daily administered for 10 days. Betulin significantly improved serum Aspartate transaminase (AST), Alanine transaminase (ALT), albumin and total bilirubin levels in comparison with cisplatin group. Histopathologically, betulin restored cisplatin-deteriorated liver structural features and hepatic fibrosis. Mechanistically, betulin reduced hepatic oxidative stress as indicated by increased total antioxidant capacity and decreased malondialdehyde levels compared to cisplatin group. In addition, betulin reduced hepatic inflammation via significant inhibition of NOD-like receptor pyrin domain-containing protein 3 (NLRP3) inflammasome, caspase-1 and interleukin-1β (IL-1β) levels. Intriguingly, betulin did not affect the expression levels of the mitotic kinase NIMA-related kinase 7 (Nek7), an NLRP3 interacting/activating protein. Last, Betulin induced anti-apoptotic effects as denoted by significant downregulation of P53 and Bax apoptotic proteins, upregulation of the anti-apoptotic protein, BCL2 and reduction of caspases 8, -9 and -3. This study is the first to provide evidence that betulin might be beneficial as a safe therapeutic approach to manage cisplatin-induced hepatotoxicity via targeting inflammatory and apoptotic pathways.
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Affiliation(s)
- Nada H Eisa
- Biochemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
| | - Mohamed El-Sherbiny
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, Riyadh, Saudi Arabia; Department of Anatomy, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
| | - Nada F Abo El-Magd
- Biochemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
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Ren L, Niu S, Sun Y, Liang Y, Zhao J, Zhang T, Zhang J. Anti-inflammatory action of betulin and its potential as a dissociated glucocorticoid receptor modulator. Food Chem Toxicol 2021; 157:112539. [PMID: 34500009 DOI: 10.1016/j.fct.2021.112539] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/30/2021] [Accepted: 09/03/2021] [Indexed: 02/06/2023]
Abstract
Although the medical application of betulin has been presented in previous studies, the potential mechanism of the anti-inflammatory action of betulin should be further investigated. This work aims to confirm the hypothesis that betulin has dexamethasone-like anti-inflammatory action through glucocorticoid receptor (GR)-mediated pathway. Firstly, the binding ability of betulin with GR was measured by a fluorescence polarization-based competitive binding assay, with the IC50 value of 79.18 ± 0.30 mM. Betulin could bind to GR and then induced GR nuclear translocation, but lacked GR transcriptional activity in HeLa cells. Hence, betulin exhibited the potential to be a dissociated modulator for GR, with the loss of glucocorticoid response element (GRE)-associated side effects. In addition, betulin downregulated GRE-driven protein expression of G6P involved in gluconeogenesis, namely side effect. The results of pro-inflammatory cytokines analysis showed that betulin exerted anti-inflammatory action in vitro. Both of the hydrophobic and hydrogen-bonding interactions stabilized the binding between betulin and GR during the simulation process. In conclusion, betulin might be a potential dissociated GR modulator with a reduced side effect profile yet keeping its anti-inflammatory action.
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21
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John R, Dalal B, Shankarkumar A, Devarajan PV. Innovative Betulin Nanosuspension exhibits enhanced anticancer activity in a Triple Negative Breast Cancer Cell line and Zebrafish angiogenesis model. Int J Pharm 2021; 600:120511. [PMID: 33766639 DOI: 10.1016/j.ijpharm.2021.120511] [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: 01/02/2021] [Revised: 02/26/2021] [Accepted: 03/17/2021] [Indexed: 01/11/2023]
Abstract
We present a nanosuspension of betulin, a BCS class II anticancer drug, particularly effective against resistant breast cancer. As anticancer efficacy of betulin is hampered by poor aqueous solubility, a nanosuspension with surface area was considered to enhance efficacy. An innovative approach wherein the betulin nanosuspension is generated instantaneously in situ, by adding a betulin preconcentrate (BeTPC) comprising drug and excipients, to aqueous medium, is successfully demonstrated. The optimal BeTPC when added to isotonic dextrose solution instantaneously generated an in situ nanosuspension (BeTNS-15) with high precipitation efficiency (92.7 ± 1.21%), average particle size (383.74 ± 7.24 nm) and good stability as per ICH guidelines. TEM revealed elongated particles while DSC and XRD indicated partial amorphization. Significantly higher cytotoxicity of BeTNS-15 (IC50 38.44 µg/ml) compared to betulin (BetS) (IC50 69.54 µg/ml) in the resistant triple negative human breast cancer cell line MDA-MB-231, was attributed to high intracellular uptake confirmed by HPLC and Imaging Flow cytometry (IFC). IFC confirmed superior anti-cancer efficacy of BeTNS-15 mediated by mitochondrial membrane disruption and inhibition of the G0/G1 phase. BeTNS-15 also exhibited significantly greater anti-angiogenic efficacy (p < 0.05) in the zebrafish model confirming superior efficacy. Simplicity of the innovative in situ approach coupled with superior efficacy proposes BeTNS as an innovative and highly promising anticancer formulation.
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Affiliation(s)
- Rijo John
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Deemed University, Elite Status and Centre of Excellence (Maharashtra), N.P. Marg, Matunga East, Mumbai, Maharashtra 400019, India
| | - Bhavik Dalal
- Transfusion Transmitted Diseases Department, ICMR-National Institute of Immunohaematology, KEM Hospital Campus, Parel, Mumbai, Maharashtra 400012, India
| | - Aruna Shankarkumar
- Transfusion Transmitted Diseases Department, ICMR-National Institute of Immunohaematology, KEM Hospital Campus, Parel, Mumbai, Maharashtra 400012, India
| | - Padma V Devarajan
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Deemed University, Elite Status and Centre of Excellence (Maharashtra), N.P. Marg, Matunga East, Mumbai, Maharashtra 400019, India.
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22
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de Oliveira VS, Castro AJG, Cesconetto PA, de Souza AZP, Júnior JJB, de Oliveira Nuñer AP, Soares CHL, Van Der Kraak G, Silva FRMB. Triterpene betulin may be involved in the acute effects of pulp and paper mill effluent on testis physiology in zebrafish. Toxicol In Vitro 2021; 73:105147. [PMID: 33722738 DOI: 10.1016/j.tiv.2021.105147] [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: 09/10/2020] [Revised: 02/20/2021] [Accepted: 03/10/2021] [Indexed: 10/21/2022]
Abstract
Pulp and paper mill effluent can cause changes in the morphology and energy metabolism in the zebrafish (Danio rerio) testis. Betulin, a naturally occurring triterpene is commonly present in this type of effluent and is suspected of being involved in these effects. The aim of this study was to compare the effects pulp and paper mill effluent and betulin on various aspects of testicular physiology in the zebrafish. This included the in vitro effects of effluent and betulin on testicular lactate content and lactate dehydrogenase (LDH) activity. In addition, the effects of betulin on glucose uptake, glycogen, alanine aminotransferase (ALT), reactive oxygen and nitrogen species formation and oxidative damage in the testes were determined. Furthermore, we compared the effects and mechanism of action of betulin and effluent on calcium homeostasis in testes. In vitro exposure to both effluent and betulin decreased lactate and calcium influx, possibly due to the activation of the sodium‑calcium exchanger (NCX) pump. Additionally, betulin-treated testes had higher reactive oxygen species (ROS) and reduced glutathione (GSH) content, as well as increased glutathione transferase (GST) activity and a tendency towards decreased catalase (CAT) activity. Thus, this study shows that alterations in testis physiology caused by the pulp and paper mill effluent in the testis may be due in part to the actions of betulin.
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Affiliation(s)
- Vanessa Staldoni de Oliveira
- Universidade Federal de Santa Catarina, Departamento de Bioquímica, Centro de Ciências Biológicas, Florianópolis, SC, Brazil
| | - Allisson Jhonatan Gomes Castro
- Universidade Federal de Santa Catarina, Departamento de Bioquímica, Centro de Ciências Biológicas, Florianópolis, SC, Brazil
| | - Patrícia Acordi Cesconetto
- Universidade Federal de Santa Catarina, Departamento de Bioquímica, Centro de Ciências Biológicas, Florianópolis, SC, Brazil
| | - Ariane Zamoner Pacheco de Souza
- Universidade Federal de Santa Catarina, Departamento de Bioquímica, Centro de Ciências Biológicas, Florianópolis, SC, Brazil
| | | | - Alex Pires de Oliveira Nuñer
- Universidade Federal de Santa Catarina, Departamento de Aquicultura, Centro de Ciências Agrárias, Florianópolis, SC, Brazil
| | - Carlos Henrique Lemos Soares
- Universidade Federal de Santa Catarina, Departamento de Bioquímica, Centro de Ciências Biológicas, Florianópolis, SC, Brazil
| | - Glen Van Der Kraak
- University of Guelph, Department of Integrative Biology, Guelph, Ontario, Canada
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Gonzalez G, Hodoň J, Kazakova A, D'Acunto CW, Kaňovský P, Urban M, Strnad M. Novel pentacyclic triterpenes exhibiting strong neuroprotective activity in SH-SY5Y cells in salsolinol- and glutamate-induced neurodegeneration models. Eur J Med Chem 2021; 213:113168. [PMID: 33508480 DOI: 10.1016/j.ejmech.2021.113168] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 12/06/2020] [Revised: 01/03/2021] [Accepted: 01/04/2021] [Indexed: 12/12/2022]
Abstract
Novel triterpene derivatives were prepared and evaluated in salsolinol (SAL)- and glutamate (Glu)-induced models of neurodegeneration in neuron-like SH-SY5Y cells. Among the tested compounds, betulin triazole 4 bearing a tetraacetyl-β-d-glucose substituent showed a highly potent neuroprotective effect. Further studies revealed that removal of tetraacetyl-β-d-glucose part (free triazole derivative 10) resulted in strong neuroprotection in the SAL model at 1 μM, but this derivative suffered from cytotoxicity at higher concentrations. Both compounds modulated oxidative stress and caspase-3,7 activity, but 10 showed a superior effect comparable to the Ac-DEVD-CHO inhibitor. Interestingly, while both 4 and 10 outperformed the positive controls in blocking mitochondrial permeability transition pore opening, only 4 demonstrated potent restoration of the mitochondrial membrane potential (MMP) in the model. Derivatives 4 and 10 also showed neuroprotection in the Glu model, with 10 exhibiting the strongest oxidative stress reducing effect among the tested compounds, while the neuroprotective activity of 4 was probably due recovery of the MMP.
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Affiliation(s)
- Gabriel Gonzalez
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and the Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic; Department of Neurology, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacký University Olomouc, CZ-775 20, Olomouc, Czech Republic
| | - Jiří Hodoň
- Department of Organic Chemistry, Faculty of Science, Palacky University, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Anna Kazakova
- Department of Organic Chemistry, Faculty of Science, Palacky University, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Cosimo Walter D'Acunto
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and the Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
| | - Petr Kaňovský
- Department of Neurology, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacký University Olomouc, CZ-775 20, Olomouc, Czech Republic
| | - Milan Urban
- Department of Medicinal Chemistry, Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic.
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and the Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic; Department of Neurology, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacký University Olomouc, CZ-775 20, Olomouc, Czech Republic.
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Kadela-Tomanek M, Jastrzębska M, Marciniec K, Chrobak E, Bębenek E, Latocha M, Kuśmierz D, Boryczka S. Design, synthesis and biological activity of 1,4-quinone moiety attached to betulin derivatives as potent DT-diaphorase substrate. Bioorg Chem 2020; 106:104478. [PMID: 33272711 DOI: 10.1016/j.bioorg.2020.104478] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/26/2020] [Accepted: 11/13/2020] [Indexed: 02/06/2023]
Abstract
In this research, betulin derivatives were bonded to the 1,4-quinone fragment by triazole linker. Furthermore, the enzymatic assay used has shown that these compounds are a good DT-diaphorase (NQO1) substrates as evidenced by increasing enzymatic conversion rates relative to that of streptonigrin. The anticancer activities of the hybrids were tested against a panel of human cell lines, like: melanoma, ovarian, breast, colon, and lung cancers. The structure-activity relationship showed that the activity depends on the type of 1,4-quinone moiety and the tumor cell lines used. It was also found that the anticancer effects were increasing against the cell line with higher NQO1 protein level, like: breast (T47D, MCF-7), colon (Caco-2), and lung (A549) cancers. The transcriptional activity of the gene encoding a proliferation marker (H3 histone), cell cycle regulators (p53 and p21) and apoptosis pathway (BCL-2 and BAX) for selected compounds were determined. The molecular docking study was carried out to examine the interaction between the hybrids and NQO1 enzyme. The computational simulation showed that the type of the 1,4-quinone moiety influences location of the compound in the active site of the enzyme. It is worth noting that the study of new hybrids of betulin as substrate for NQO1 protein may lead to new medical therapeutic applications in the future.
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Affiliation(s)
- Monika Kadela-Tomanek
- Department of Organic Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, 4 Jagiellońska Str, 41-200 Sosnowiec, Poland.
| | - Maria Jastrzębska
- Silesian Center for Education and Interdisciplinary Research, University of Silesia, Institute of Physics, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland
| | - Krzysztof Marciniec
- Department of Organic Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, 4 Jagiellońska Str, 41-200 Sosnowiec, Poland
| | - Elwira Chrobak
- Department of Organic Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, 4 Jagiellońska Str, 41-200 Sosnowiec, Poland
| | - Ewa Bębenek
- Department of Organic Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, 4 Jagiellońska Str, 41-200 Sosnowiec, Poland
| | - Małgorzata Latocha
- Department of Cell Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, 8 Jedności Str, 41-200 Sosnowiec, Poland
| | - Dariusz Kuśmierz
- Department of Cell Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, 8 Jedności Str, 41-200 Sosnowiec, Poland
| | - Stanisław Boryczka
- Department of Organic Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Katowice, 4 Jagiellońska Str, 41-200 Sosnowiec, Poland
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25
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Kutkowska J, Strzadala L, Rapak A. Hypoxia increases the apoptotic response to betulinic acid and betulin in human non-small cell lung cancer cells. Chem Biol Interact 2020; 333:109320. [PMID: 33181113 DOI: 10.1016/j.cbi.2020.109320] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 10/11/2020] [Accepted: 11/06/2020] [Indexed: 12/17/2022]
Abstract
Betulinic acid and betulin show promising activity against cancers cells, but the mechanism of their action is still unclear. In this study, non-small cell lung cancer (NSCLC) cell lines: A549, H358 and NCI-H1703 were treated with betulinic acid and betulin under normoxic and hypoxic conditions as hypoxia is critically involved in the response of solid tumors to chemotherapy. The treatment inhibits viability and proliferation of NSCLC cells. The anti-proliferative effect was induced by G1 cell cycle arrest with increased p21 expression and decreased cyclin D1 and cyclin B1 expression. Additionally, downregulation of p-GSK3β activity and the Wnt/β-catenin pathway were also observed under hypoxia. We found that hypoxia increased apoptosis in NSCLC cells. Cell death was associated with changes in the expression of proteins involved in the mitochondrial apoptosis pathway and induction of apoptotic death by caspase activation. Additionally, hypoxia exposure deregulated HIF-1α and p53 expression levels. Importantly, treatment with betulinic acid and betulin reduced colony-forming ability under normoxia, however, only betulinic acid reduced clonogenic activity under hypoxia. Our findings that betulinic acid increases apoptotic cell death and clonogenic activity under hypoxic conditions reveal new attractive strategies for treating hypoxic cancer tumors, such as NSCLC.
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Affiliation(s)
- Justyna Kutkowska
- Department of Experimental Oncology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy Polish Academy of Science, Wroclaw, Poland
| | - Leon Strzadala
- Department of Experimental Oncology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy Polish Academy of Science, Wroclaw, Poland
| | - Andrzej Rapak
- Department of Experimental Oncology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy Polish Academy of Science, Wroclaw, Poland.
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Zhang L, Yuan PH, Yang DZ, Bi YC, Su B, Zhang BX, Wang FQ, Lu Y, Du GH. Purity and Uncertainty Study of CRM Betulin by DSC. Nat Prod Bioprospect 2020; 10:317-324. [PMID: 32809127 PMCID: PMC7520392 DOI: 10.1007/s13659-020-00261-1] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Abstract
Betulin (BE) can be obtained from many plants, such as those belonging Betulaceae family, and pharmacological investigations showed its notable biological properties and good potential for food and pharmaceutical development. We investigated the homogeneity, stability, purity, and uncertainty of a newly certified reference material (CRM) of BE. The certified purity value for the CRM of BE was 99.56% with an extended uncertainty of 0.07% (k = 2, P = 0.95), as determined by differential scanning calorimetry (DSC). In this study, DSC was used for the first time for purity determination of BE. Given its high accuracy, precision, and reproducibility, DSC can be used as an alternative technique for purity determination of CRMs in the pharmaceutical and food industry.
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Affiliation(s)
- Li Zhang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Peng-Hui Yuan
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - De-Zhi Yang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Yan-Cai Bi
- Soteria Pharmaceutical Co., Ltd., Laiwu, 271100, People's Republic of China
| | - Bin Su
- Soteria Pharmaceutical Co., Ltd., Laiwu, 271100, People's Republic of China
| | - Bao-Xi Zhang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Fu-Qing Wang
- China Pharmaceutical Enterprises Association, Beijing, 100044, People's Republic of China.
| | - Yang Lu
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Guan-Hua Du
- Beijing City Key Laboratory of Drug Target and Screening Research, National Center for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
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27
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Lodi GC, Borsato G, Vázquez de Ágredos Pascual ML, Izzo FC. Disclosing the composition of unknown historical drug formulations: an emblematic case from the Spezieria of St. Maria della Scala in Rome. Anal Bioanal Chem 2020; 412:7581-7593. [PMID: 32918172 DOI: 10.1007/s00216-020-02893-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 03/02/2020] [Revised: 07/16/2020] [Accepted: 08/18/2020] [Indexed: 10/23/2022]
Abstract
This paper reports a pioneering study of an unknown historical drug formulation preserved in the Spezieria of Santa Maria della Scala in Rome, founded at the end of the seventeenth century by the Discalced Carmelites. Due to limited literature related to pharmaceutical remedies and drugs of the Early Modern Era (between the XV and XVIII centuries) and the complexity in their formulations, the study of these drugs represents a great challenge. The untargeted nature of the selected drug required a multi-analytical approach with complementary techniques to formulate a compositional hypothesis: FT-IR spectroscopy, gas chromatography-associated/mass spectrometry (GC-MS) and nuclear magnetic resonance (NMR) were successfully employed to identify different organic compounds. Systematic archaeobotanical research was performed as well, allowing us to acquire data related to the possible genus of plants from which these natural compounds derive and their geographical origin. The unknown drug formulation turned out to be a complex mixture used as an ointment with an anti-inflammatory purpose. It mainly contains a mixture of Venetian turpentine; a Pine resin (colophony) from the Pinaceae family; an exudate of a plant from South America, whose identified components are triterpenic compounds such as alpha- and beta-amyrins, betulin and lupeol; and saturated fatty acids which act as carriers and/or to reduce the viscosity of abovementioned exudates and resins. The study of historical drugs is important not only in order to know the practices handed down by the speziali in the past but also to reconstruct historical recipes, which can inspire new dermatological, cosmetic, hygienic and current healing products.Graphical abstract.
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Affiliation(s)
- Giulia Carolina Lodi
- Sciences and Technologies for the Conservation of Cultural Heritage, Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155/b, 30174, Venice, Italy
| | - Giuseppe Borsato
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155/b, 30174 Mestre, Venice, Italy
| | | | - Francesca Caterina Izzo
- Sciences and Technologies for the Conservation of Cultural Heritage, Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155/b, 30174, Venice, Italy.
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Amuthan A, Devi V, Shreedhara CS, Rao V, Jasphin S, Kumar N. Vernonia cinerea regenerates tubular epithelial cells in cisplatin induced nephrotoxicity in cancer bearing mice without affecting antitumor activity. J Tradit Complement Med 2020; 11:279-286. [PMID: 34012874 PMCID: PMC8116717 DOI: 10.1016/j.jtcme.2020.08.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 07/06/2020] [Accepted: 08/26/2020] [Indexed: 11/15/2022] Open
Abstract
Background Traditional Siddha Medicine advises using metal-based formulations to treat cancers. In the case of any toxicities during the therapy, Siddha physicians use Vernonia cinerea (VC) whole plant kashayam (crude aqueous extract-CAE) to reverse the toxic effects. Aim To evaluate the nephroprotective activity of CAE and its fractions in cisplatin-induced nephrotoxicity and to assess whether they compromise the anticancer efficacy of cisplatin. Materials and methods Cisplatin-induced renal damage was induced in Ehrlich Ascites Carcinoma (EAC) bearing mice during mild phase of tumor growth. CAE and its butanol (BF) and aqueous (AF) fractions were administered orally from the 5th day for five days. Nephroprotective potential (serum urea, creatinine, renal histology) and effect of VC on cisplatin anticancer efficacy (tumor volume, viable tumor cells, percentage increase in life span (% ILS)) were calculated. Result CAE and its fractions significantly reversed the cisplatin-induced renal damage. CAE and BF treated animals showed regeneration of 50%–75% of proximal tubular cells. Compared to EAC control mice, the % ILS of the cisplatin-treated group was 244% and it was further extended to 379% after CAE administration. The % ILS in the CAE treated group was 1.6 times higher than the cisplatin alone treated group. GC-MS study showed the presence of astaxanthin and betulin. Conclusion CAE of VC reverses cisplatin-induced kidney damage as well as regenerates proximal tubular epithelial cells, without compromising the anticancer effect of cisplatin. When CAE was further fractionated, the nephroprotective activity was retained, but the beneficial anticancer effect of cisplatin was compromised. Vernonia cinerea (VC) significantly reverses cisplatin-induced kidney damage. VC regenerates the damaged proximal tubular epithelial cells. VC did not compromise the anticancer beneficial effect of cisplatin. Fractionation of VC lead to compromising of cisplatin anticancer effect. Astaxanthin and betulin present in VC could be resposible for its nephroprotective effect.
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Key Words
- % ILS, percentage increase in life span
- AF, aqueous fraction
- Astaxanthin
- Ayurveda
- BF, n-butanol fraction
- Betulin
- CAE, Crude aqueous extract
- Cisplatin
- EAC, Ehrlich Ascites Carcinoma
- GC-MS, Gas Chromatography-Mass Spectroscopy
- MST, Mean Survival Time
- Nephroprotection
- Nephrotoxicity
- Siddha
- US FDA, Food and Drug Administration of the United States
- VC, Vernonia cinerea
- Vernonia cinerea
- WBC, White blood cells
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Affiliation(s)
- Arul Amuthan
- Department of Pharmacology, Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka State, 576104, India
- Division of Siddha, Center for Integrative Medicine and Research, Manipal Academy of Higher Education, Manipal, Karnataka State, 576104, India
| | - Vasudha Devi
- Department of Pharmacology, Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka State, 576104, India
- Coordinator, Center for Cardiovascular Pharmaology, Manipal Academy of Higher Education, Manipal, Karnataka State, 576104, India
- Corresponding author.,
| | - Chandrashekara Shastry Shreedhara
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka State, 576104, India
| | - Venkata Rao
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka State, 576104, India
| | - Shiny Jasphin
- Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka State, 576104, India
| | - Nitesh Kumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka State, 576104, India
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29
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Kazakova O, Lopatina T, Giniyatullina G, Mioc M, Soica C. Antimycobacterial activity of azepano betulin and its derivative: In vitro, in vivo, ADMET and docking studies. Bioorg Chem 2020; 104:104209. [PMID: 32911190 DOI: 10.1016/j.bioorg.2020.104209] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/15/2020] [Accepted: 08/19/2020] [Indexed: 12/20/2022]
Abstract
The antimycobacterial investigation of azepanobetulin and its amide derivative was performed. Both compounds showed increased in vitro antibacterial activity on the H37Rv MTB strain in aerobic and anaerobic conditions. Basing on differences between MIC and IC50 values a predominant bactericidal effect for amide in contrast to azepanobetulin with a bacteriostatic antibacterial mechanism is defined. Both compounds showed a strong antibacterial effect against resistant MTB strains with amide derivative being slightly more active. Amide derivative also showed a higher antibacterial potency against non-tuberculous mycobacterial strains (M. avium, M. abscessus). Molecular docking studies showed that the inhibition of tuberculosinyl adenosine transferase (Rv3378c) could constitute an antimycobacterial mechanism of action for these triterpenic azepane derivatives. The pharmacokinetic profile was evaluated by ADMET studies and azepanobetulin showing the better results was evaluated by in vivo experiments. This compound has demonstrated a statistically significant antimycobacterial activity compared to control, but inferior to isoniazid. Our findings show that pentacyclic triterpene derivatives holding a seven-membered azepane A-ring are the promising template for the development of new agents with high antibacterial potential against M. tuberculosis H37Rv, non-tuberculous mycobacterial and drug- resistant strains.
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Affiliation(s)
- Oxana Kazakova
- Ufa Institute of Chemistry UFRC RAS, pr. Octyabrya 71, 450054 Ufa, Russian Federation.
| | - Tatyana Lopatina
- Ufa Institute of Chemistry UFRC RAS, pr. Octyabrya 71, 450054 Ufa, Russian Federation
| | | | - Marius Mioc
- Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., Timisoara 300041, Romania
| | - Codruta Soica
- Faculty of Pharmacy, "Victor Babes" University of Medicine and Pharmacy, 2nd Eftimie Murgu Sq., Timisoara 300041, Romania.
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Kazakova O, Smirnova I, Lopatina T, Giniyatullina G, Petrova A, Khusnutdinova E, Csuk R, Serbian I, Loesche A. Synthesis and cholinesterase inhibiting potential of A-ring azepano- and 3-amino-3,4-seco-triterpenoids. Bioorg Chem 2020; 101:104001. [PMID: 32683137 DOI: 10.1016/j.bioorg.2020.104001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/20/2020] [Accepted: 06/07/2020] [Indexed: 01/07/2023]
Abstract
In this study, a series of A-ring azepano- and 3-amino-3,4-seco-derivatives were synthesized from betulin, oleanolic, ursolic and glycyrrhetinic acids aiming to develop new cholinesterase inhibitors. Azepanobetulin, azepanoerythrodiol and azepanouvaol were modified to give amide and tosyl derivatives, while azepano-anhydrobetulines and azepano-glycyrrhetols were obtained for the first time. Oleanane and ursane type 3-amino-3,4-seco-4(23)-en triterpenic alcohols were synthesized by reducing the corresponding 2-cyano-derivatives accessible from Beckmann type 2 rearrangements. The compounds were screened in colorimetric Ellman's assays to determine their ability to act as inhibitors for the enzymes acetylcholinesterase (AChE, from electric eel) and butyrylcholinesterase (BChE, from equine serum). While most of these compounds were only moderate inhibitors for AChE, several of them were shown to be inhibitors for BChE acting as mixed-type inhibitors. Azepanobetulin 1, its C28-amide derivatives 7 and 8, azepano-11-deoxo-glycyrrhetol 12 and azepanouvaol 18 held inhibition constants Ki ranging between 0.21 ± 0.06 to 0.68 ± 0.19 μM. Thus, they were approximately 4 to 10 times more active than standard galantamine hydrobromide. For all of the compounds reasonably high docking scores for BChE were obtained being in good agreement with the experimental results from the enzymatic studies. As a result, A-ring azepano-triterpenoids were found to be new scaffolds for the development of BChE inhibitors.
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Affiliation(s)
- Oxana Kazakova
- Ufa Institute of Chemistry UFRC RAS, pr. Octyabrya 71, 450054 Ufa, Russian Federation.
| | - Irina Smirnova
- Ufa Institute of Chemistry UFRC RAS, pr. Octyabrya 71, 450054 Ufa, Russian Federation
| | - Tatyana Lopatina
- Ufa Institute of Chemistry UFRC RAS, pr. Octyabrya 71, 450054 Ufa, Russian Federation
| | | | - Anastasiya Petrova
- Ufa Institute of Chemistry UFRC RAS, pr. Octyabrya 71, 450054 Ufa, Russian Federation
| | - Elmira Khusnutdinova
- Ufa Institute of Chemistry UFRC RAS, pr. Octyabrya 71, 450054 Ufa, Russian Federation
| | - René Csuk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
| | - Immo Serbian
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Anne Loesche
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
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Wen Y, Geng L, Zhou L, Pei X, Yang Z, Ding Z. Betulin alleviates on myocardial inflammation in diabetes mice via regulating Siti1/NLRP3/NF-κB pathway. Int Immunopharmacol 2020; 85:106653. [PMID: 32531709 DOI: 10.1016/j.intimp.2020.106653] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/28/2020] [Accepted: 05/28/2020] [Indexed: 12/29/2022]
Abstract
The aim of this study is to study the effect of betulin (BE) on myocardial injury in diabetic mice. Insulin-related indexes and inflammation-related cytokines are detected by commercial kits. The mechanism of BE on diabetic myocardial injury was studied by modern molecular biology techniques. BE significantly improved glocose tolerance, reduced lipid accumulation and reduced the content of inflammatory cytokines in diabetic mice. Furthermore, BE regulated Siti1/NLRP3/NF-κB signaling pathway in db/db mice and H9C2 cells. Siti1 inhibitor (EX-57) counteracted those changes. BE significantly protected against diabetic cardiomyopathy, which was related to the regulation of Siti1/NLRP3/NF-κB pathway.
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Affiliation(s)
- Yongjin Wen
- Department of Cardiovascular Surgery, Fuwai Central China Cardiovascular Hospital, China; Department of Cardiovascular Surgery, Henan Provincial People's Hospital, China.
| | - Ling Geng
- Ward of Orthopedic and Rehabilitation, Zhengzhou Central Hospital, China
| | - Lin Zhou
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, China.
| | - Xueliang Pei
- Department of Cardiovascular Surgery, Fuwai Central China Cardiovascular Hospital, China; Department of Cardiovascular Surgery, Henan Provincial People's Hospital, China
| | - Zhiyuan Yang
- Department of Cardiovascular Surgery, Fuwai Central China Cardiovascular Hospital, China; Department of Cardiovascular Surgery, Henan Provincial People's Hospital, China
| | - Zhiwei Ding
- Department of Cardiovascular Surgery, Fuwai Central China Cardiovascular Hospital, China; Department of Cardiovascular Surgery, Henan Provincial People's Hospital, China
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Dubinin MV, Semenova AA, Ilzorkina AI, Mikheeva IB, Yashin VA, Penkov NV, Vydrina VA, Ishmuratov GY, Sharapov VA, Khoroshavina EI, Gudkov SV, Belosludtsev KN. Effect of betulin and betulonic acid on isolated rat liver mitochondria and liposomes. Biochim Biophys Acta Biomembr 2020; 1862:183383. [PMID: 32522531 DOI: 10.1016/j.bbamem.2020.183383] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 01/01/2023]
Abstract
The paper considers the effects of plant triterpenoid betulin and its derivative betulonic acid on rat liver mitochondria and liposomes. It was found that betulonic acid and, to a lesser extent, betulin, activate mitochondrial respiration in states 2 and 4 and inhibit ADP- and DNP-stimulated (uncoupled) respiration. The effect of betulonic acid resulted in a significant decrease of the respiratory control and ADP/O ratios and decrease in Δψ. The effects of both compounds were most pronounced in the case of succinate-fueled mitochondrial respiration. This may include both the possible protonophore effect of betulonic acid and the inhibition of respiratory chain complexes by both compounds. Both agents enhanced H2O2 production in succinate-fueled mitochondria, while betulonic acid exerted an antioxidant effect with NAD-dependent substrates. Betulin was found to induce mitochondrial aggregation, but had no effect on membrane permeability. A similar pattern was found on liposomes. As revealed by the laurdan generalized polarization (GP) technique, betulin increased laurdan GP in lecithin liposomes, indicating a decrease in membrane fluidity. Measurements of GP as a function of fluorescence excitation wavelength gave an ascending line for high concentrations of betulin, which can be interpreted as phase heterogeneity of the lipid/betulin system. High concentrations of betulin (> 60 mol%) was also demonstrated to cause permeabilization of lecithin liposomes. Betulonic acid was much less effective in inducing the aggregation of mitochondria and liposomes and had no effect on membrane permeability. The possible mechanisms of betulin and betulonic acid effect on rat liver mitochondria and liposomes are discussed.
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Affiliation(s)
- Mikhail V Dubinin
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El, 424001, Russia.
| | - Alena A Semenova
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El, 424001, Russia
| | - Anna I Ilzorkina
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El, 424001, Russia
| | - Irina B Mikheeva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region, 142290, Russia
| | - Valery A Yashin
- Institute of Cell Biophysics, Russian Academy of Sciences, PSCBR RAS, Institutskaya 3, Pushchino, Moscow Region, 142290, Russia
| | - Nikita V Penkov
- Institute of Cell Biophysics, Russian Academy of Sciences, PSCBR RAS, Institutskaya 3, Pushchino, Moscow Region, 142290, Russia
| | - Valentina A Vydrina
- Ufa Institute of Chemistry, Ufa Federal Research Centre of the Russian Academy of Sciences, Prosp. Oktyabrya 71, Ufa, Republic of Bashkortostan, 450054, Russia
| | - Gumer Yu Ishmuratov
- Ufa Institute of Chemistry, Ufa Federal Research Centre of the Russian Academy of Sciences, Prosp. Oktyabrya 71, Ufa, Republic of Bashkortostan, 450054, Russia
| | | | | | - Sergey V Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilova 38, Moscow, 119991, Russia
| | - Konstantin N Belosludtsev
- Mari State University, pl. Lenina 1, Yoshkar-Ola, Mari El, 424001, Russia; Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region, 142290, Russia
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Yuan PH, Bi YC, Su B, Yang DZ, Gong NB, Zhang L, Lu Y, Du GH. Analysis of Four Solvatomorphs of Betulin by TG-DTA-EI/PI-MS System Equipped with the Skimmer-Type Interface. Nat Prod Bioprospect 2020; 10:141-152. [PMID: 32415420 PMCID: PMC7253561 DOI: 10.1007/s13659-020-00243-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/08/2020] [Indexed: 06/11/2023]
Abstract
Betulin (BE) has exceedingly become a potential natural product, providing multiple pharmacological and biological activities, including anti-cancer, anti-viral, and anti-inflammatory benefits. Previous research indicated that the solvatomorphism of BE can easily occur through crystallization with different organic solvents. This property of BE can directly affect its extraction, isolation, and preparation process. In this study, a system of thermogravimetry (TG)-differential thermal analysis (DTA) coupled with mass spectrometry (MS) with electron ionization (EI) and photoionization (PI) capability, equipped with the skimmer-type interface (i.e., skimmer-type interfaced TG-DTA-EI/PI-MS system), as a real-time and onsite analysis technique, was employed. Then, four solvatomorphs of BE, namely, with pyridine and water (A), sec-butanol (B), n,n-dimethylformamide (DMF) (C), and isopropanol (V), were analyzed for the first time. Finally, five kinds of the main volatile gaseous species, including H2O, pyridine, sec-butanol, DMF, and isopropanol, were identified clearly. Furthermore, the multi-step desolvation processes of the four solvatomorphs of BE were revealed by this system for the first time. This system showed great potential for the rapid and accurate analysis of various solvatomorphs of natural products.
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Affiliation(s)
- Peng-Hui Yuan
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Yan-Cai Bi
- Soteria Pharmaceutical Co., Ltd, Laiwu, 271100, People's Republic of China
| | - Bin Su
- Soteria Pharmaceutical Co., Ltd, Laiwu, 271100, People's Republic of China
| | - De-Zhi Yang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Ning-Bo Gong
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Li Zhang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China.
| | - Yang Lu
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China.
| | - Guan-Hua Du
- Beijing City Key Laboratory of Drug Target and Screening Research, National Center for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
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Mierina I, Vilskersts R, Turks M. Delivery Systems for Birch-bark Triterpenoids and their Derivatives in Anticancer Research. Curr Med Chem 2020; 27:1308-1336. [PMID: 29848269 DOI: 10.2174/0929867325666180530095657] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 02/28/2018] [Accepted: 04/05/2018] [Indexed: 02/07/2023]
Abstract
Birch-bark triterpenoids and their semi-synthetic derivatives possess a wide range of biological activities including cytotoxic effects on various tumor cell lines. However, due to the low solubility and bioavailability, their medicinal applications are rather limited. The use of various nanotechnology-based drug delivery systems is a rapidly developing approach to the solubilization of insufficiently bioavailable pharmaceuticals. Herein, the drug delivery systems deemed to be applicable for birch-bark triterpenoid structures are reviewed. The aforementioned disadvantages of birch-bark triterpenoids and their semi-synthetic derivatives can be overcome through their incorporation into organic nanoparticles, which include various dendrimeric systems, as well as embedding the active compounds into polymer matrices or complexation with carbohydrate nanoparticles without covalent bonding. Some of the known triterpenoid delivery systems consist of nanoparticles featuring inorganic cores covered with carbohydrates or other polymers. Methods for delivering the title compounds through encapsulation and emulsification into lipophilic media are also suitable. Besides, the birch-bark triterpenoids can form self-assembling systems with increased bio-availability. Even more, the self-assembling systems are used as carriers for delivering other chemotherapeutic agents. Another advantage besides increased bioavailability and anticancer activity is the reduced overall systemic toxicity in most of the cases, when triterpenoids are delivered with any of the carriers.
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Affiliation(s)
- Inese Mierina
- Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
| | - Reinis Vilskersts
- Latvian Institute of Organic Synthesis, Riga, Latvia; 3Faculty of Pharmacy, Riga Stradins University, Riga, Latvia.,Faculty of Pharmacy, Riga Stradins University, Riga, Latvia
| | - Māris Turks
- Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
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Chen H, Xiao H, Pang J. Parameter Optimization and Potential Bioactivity Evaluation of a Betulin Extract from White Birch Bark. Plants (Basel) 2020; 9:plants9030392. [PMID: 32210064 PMCID: PMC7154890 DOI: 10.3390/plants9030392] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/22/2020] [Accepted: 03/22/2020] [Indexed: 01/05/2023]
Abstract
Owing to its pharmacological potential, betulin has attracted substantial attention in the past two decades. The present work attempts to extract betulin from Betula platyphylla Suk. bark by the ultrasonic-assisted ethanol method and to evaluate its potential bioactivities. The critical process variables affecting the yield were optimized by a four-factor, three-level, central composite response surface methodology (RSM). A betulin yield of 92.67% was achieved under the optimum conditions: 65% ethanol concentration, 1:25 ratio of white birch bark to solvent, an extraction temperature of 30 °C, and an extraction time of 30 min. The ratio of solid to solvent is the most significant parameter in terms of yield. The optimal conditions were validated through experiments, and the observed value (92.67 ± 2.3%) was interrelated with the predicted value (92.86 ± 1.5%). The betulin extract was analyzed quantitatively by HPLC and quantitatively by LC/MS, before its potential biological activities were evaluated. Bioactivity surveys confirmed that the betulin extract showed not only no embryo deformity through zebrafish administration experiments, but also no cytotoxicity through MTT assays. Furthermore, the betulin extract had strong antioxidant activities in vitro by scavenging ferric reducing power (FRAP), 1,1-diphenyl-2-picryl hydrazyl(DPPH), 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and chelating metal ions. This study demonstrates that ultrasonic-assisted ethanol extraction may be a green, efficient method for the extraction of betulin from white birch bark, and that betulin extracts are potentially useful in cosmetics, food supplements, or pharmaceutical applications.
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Affiliation(s)
- Haiyan Chen
- Changchun Sci-Tech University, Changchun 130600, Jilin, China;
- College of Food Science and Engineering, Jilin Agriculture University, Changchun 130118, Jilin, China;
- Correspondence: ; Tel.: +86-01-366-443-4499
| | - Han Xiao
- College of Food Science and Engineering, Jilin Agriculture University, Changchun 130118, Jilin, China;
| | - Jiwei Pang
- Changchun Sci-Tech University, Changchun 130600, Jilin, China;
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Stacey RJ, Dunne J, Brunning S, Devièse T, Mortimer R, Ladd S, Parfitt K, Evershed R, Bull I. Birch bark tar in early Medieval England - Continuity of tradition or technological revival? J Archaeol Sci Rep 2020; 29:102118. [PMID: 32190727 PMCID: PMC7063695 DOI: 10.1016/j.jasrep.2019.102118] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 11/18/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
Birch bark tar is a manufactured product with a history of production and use that reaches back to the Palaeolithic. Its sticky, water resistant and biocidal properties mean that it has a wide range of applications, for example, as a multipurpose adhesive, sealant and in medicine. Archaeological evidence for birch bark tar in the old world covers a broad geographic range from the UK to the Baltic and from the Mediterranean to Scandinavia. In the east and north of this range there is continuity of use to modern times but in western Europe and the British Isles the use of birch bark tar has generally been viewed as limited to prehistory, with gradual displacement by pine tars during the Roman period. Here, we report new finds of birch bark tar from two early Medieval sites in the east of England. Analysis by HT-GC/MS to identify the tars also revealed fatty material, possibly added to modify the tar. The different contexts of the finds point to diverse applications of the material: in one case perhaps a medicine, the other associated with a ceramic container, possibly used for processing the tar. The results present the first identification of birch bark tar from early Medieval archaeological contexts in the UK. Together they indicate a later period of use for birch bark tar in the UK than has been previously observed and raise the question of whether this indicates evidence of a longer continuity of use than hitherto recognised or a later reintroduction of the technology in the Medieval period, in which case the similarities between the find sites, both early Anglo-Saxon cemeteries with comparable assemblages of grave goods, may be significant.
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Affiliation(s)
- Rebecca J Stacey
- Department of Scientific Research, British Museum, Great Russell Street, London WC1B 3DG, UK
| | - Julie Dunne
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Sue Brunning
- Department of Britain, Europe and Prehistory, British Museum, Great Russell Street, London WC1B 3DG, UK
| | - Thibaut Devièse
- Department of Scientific Research, British Museum, Great Russell Street, London WC1B 3DG, UK
| | - Richard Mortimer
- Oxford Archaeology East, 15 Trafalgar Way, Bar Hill, Cambridgeshire, CB23 8SQ, UK
| | - Stuart Ladd
- Oxford Archaeology East, 15 Trafalgar Way, Bar Hill, Cambridgeshire, CB23 8SQ, UK
| | - Keith Parfitt
- Canterbury Archaeological Trust Ltd, 92A Broad Street, Canterbury, Kent CT1 2LU, UK
| | - Richard Evershed
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Ian Bull
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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Myszka H, Grzywacz D, Zdrowowicz M, Spisz P, Butowska K, Rak J, Piosik J, Jaśkiewicz M, Kamysz W, Liberek B. Design, synthesis and biological evaluation of betulin-3-yl 2-amino-2-deoxy-β-d-glycopyranosides. Bioorg Chem 2020; 96:103568. [PMID: 31972464 DOI: 10.1016/j.bioorg.2020.103568] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 12/03/2019] [Accepted: 01/02/2020] [Indexed: 01/11/2023]
Abstract
Betulin is a natural pentacyclic triterpenoid, possessing a lupane-structure, with a wide range of pharmacological activities. Its weak hydrosolubility hinders the biological activity of the compound and its derivatives. To circumvent this problem, we synthesized and tested in vitro three d-glycosaminosides of betulin. The structure of betulin was modified by incorporation of 2-amino-2-deoxy-d-gluco- and -d-galactopyranosyl moieties to its C-3 position. So far betulinyl glycosides containing these amino-sugars have not been reported in the literature. The structure of the studied derivatives was confirmed by 1H and 13C NMR spectroscopy as well as mass spectrometry. The 28-O-acetylbetulin-3-yl 2-amino-2-deoxy-β-d-glucopyranoside and betulin-3-yl 2-amino-2-deoxy-β-d-gluco- and β-d-galactopyranoside were tested against the human pathogenic fungi and Gram-positive and Gram-negative bacteria. Moreover, the MTT assay of their cytotoxicity was performed on the MCF-7 breast cancer cell line and on the HDFa, human dermal fibroblasts. The Ames test on mutagenic properties completed our biological assays.
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Drąg-Zalesińska M, Rembiałkowska N, Borska S, Saczko J, Drąg M, Poręba M, Kulbacka J. A New Betulin Derivative Stimulates the Synthesis of Collagen in Human Fibroblasts Stronger than its Precursor. In Vivo 2019; 33:1087-1093. [PMID: 31280196 DOI: 10.21873/invivo.11577] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/17/2019] [Accepted: 04/23/2019] [Indexed: 02/01/2023]
Abstract
BACKGROUND/AIM The exploration of substances that stimulate collagen synthesis and retard the aging process of the skin is an active field of current research. The natural environment and plants used in traditional medicine have been a source of such substances. The aim of this study was to compare the stimulatory effect of betulin (BE), betulinic acid (BA) and the new derivative - betulin ester with diaminobutyl acid (BE-Dab-NH2) on collagen synthesis in human normal fibroblasts. MATERIALS AND METHODS Primary fibroblast cultures were obtained from the gums of a healthy patient. The effect of the above-mentioned compounds was assessed by Sircol collagen assay, immunocytochemistry, and proliferation test. RESULTS Fibroblasts cultured in the presence of BE-Dab-NH2 produced 6.85 times more collagen than control cells, 7.85 times more than those cultured in the presence of BA and 6.31 times more than those cultured in the presence of BE. An intense immunocytochemical reaction for collagen type I and III was found in fibroblasts cultured in the presence of BE-Dab-NH2 Conclusion: BE-Dab-NH2 stimulates significantly more collagen synthesis in normal human fibroblasts than its precursor.
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Affiliation(s)
- Małgorzata Drąg-Zalesińska
- Faculty of Medicine, Department of Human Morphology and Embryology, Division of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - Nina Rembiałkowska
- Faculty of Pharmacy, Department of Molecular and Cellular Biology, Wroclaw Medical University, Wroclaw, Poland
| | - Sylwia Borska
- Faculty of Medicine, Department of Human Morphology and Embryology, Division of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - Jolanta Saczko
- Faculty of Pharmacy, Department of Molecular and Cellular Biology, Wroclaw Medical University, Wroclaw, Poland
| | - Marcin Drąg
- Faculty of Chemistry, Department of Bioorganic Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Marcin Poręba
- Faculty of Chemistry, Department of Bioorganic Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Julita Kulbacka
- Faculty of Pharmacy, Department of Molecular and Cellular Biology, Wroclaw Medical University, Wroclaw, Poland
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Lu G, Xu L, Zhang P, Dou X, Yu J, Feng H. Betulin efficiently suppresses the process of an experimental Listeria monocytogenes infection as an antagonist against listeriolysin O. Fitoterapia 2019; 139:104409. [PMID: 31698059 DOI: 10.1016/j.fitote.2019.104409] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 10/30/2019] [Accepted: 11/04/2019] [Indexed: 12/30/2022]
Abstract
Listeria monocytogenes (Lm) is a widespread foodborne intracellular pathogen that invades a variety of cells, causing abortions and severe human diseases. After internalization into host cells, pore-forming cytolysin listeriolysin O (LLO) disrupts the phagosome, which allows the bacterium to survive and colonize the cytoplasm, providing the bacterium the chance to infect neighboring cells. Betulin is an extracted natural compound from birch bark with diverse pharmacological activities. Here, we showed that LLO-induced rabbit red blood cell lysis in vitro was inhibited by preincubation with betulin, which suppressed the oligomerization process. Infectious assays performed with human monocyte macrophages indicated that betulin significantly protected cells against Lm-induced cell injury. In addition, Balb/c mice were used to perform a general infection, and betulin administration obviously inhibited organ damage and bacterial burden in livers and spleens of infected mice. In conclusion, betulin obviously inhibited Lm-induced cell injury in vitro and protected against infection in vivo through an antivirulence effect. Our results showed betulin as a new candidate against listeriosis by targeting LLO and highlight the potential of natural product-based medicine to be applied in the treatment of pathogenic infections.
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Li J, Jiang B, Chen C, Fan B, Huang H, Chen G. Biotransformation of betulin by Mucor subtilissimus to discover anti-inflammatory derivatives. Phytochemistry 2019; 166:112076. [PMID: 31351331 DOI: 10.1016/j.phytochem.2019.112076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 05/05/2019] [Revised: 07/15/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
Biotransformation of lupane-type triterpenoid betulin was carried out with Mucor subtilissimus CGMCC 3.2456. Yielded nine previously undescribed hydroxylated compounds. M. subtilissimus biotransformation provided C-7, C-11, C-15 and C-24 hydroxylated compounds along with C-7 oxidized and C-28 acetylated derivatives. The structures of the metabolites were established based on extensive NMR and HR-ESI-MS data analyses. Furthermore, we found that most of the metabolites exhibited pronounced inhibitory activities on lipopolysaccharides-induced NO production in RAW264.7 cells.
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Affiliation(s)
- Jianlin Li
- School of Pharmacy, Nantong University, Nantong, China
| | | | - Chen Chen
- School of Pharmacy, Nantong University, Nantong, China
| | - Boyi Fan
- School of Pharmacy, Nantong University, Nantong, China
| | - Huilian Huang
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, Ministry of Education, Nanchang, China
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Kern JS, Schwieger-Briel A, Löwe S, Sumeray M, Davis C, Martinez AE. Oleogel-S10 Phase 3 study "EASE" for epidermolysis bullosa: study design and rationale. Trials 2019; 20:350. [PMID: 31186047 PMCID: PMC6560757 DOI: 10.1186/s13063-019-3362-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 04/15/2019] [Indexed: 12/25/2022] Open
Abstract
Background Epidermolysis bullosa (EB) is a group of rare, genetic diseases that affect the integrity of epithelial tissues, most notably the skin. Patients experience recurrent skin wounding, with severity depending on type, sub-type, and mutation. Oleogel-S10, a formulation of birch bark extract, has demonstrated efficacy in a Phase 2 trial assessing re-epithelialization of wounds in EB. EASE (NCT03068780, EudraCT 2016–002066-32) is a randomized, Phase 3, placebo-controlled study designed to determine the efficacy of Oleogel-S10 versus placebo in patients with EB. Methods EASE is a Phase 3, two-phase study comprising a 90-day, double-blind, randomized, placebo-controlled phase, followed by 24 months of open-label, single-arm follow-up. Patients with junctional EB, dystrophic EB, or Kindler syndrome and target wounds (10 - 50cm2) present for > 21 days and < 9 months, are randomized in a 1:1 ratio to receive wound dressings according to local standard of care with or without Oleogel-S10. Placebo is based on the Oleogel-S10 vehicle, which is sunflower oil formulated to have a consistency indistinguishable from that of the active product. The primary endpoint of the trial, directed by the US health authority according to the required study endpoints for chronic cutaneous ulcer and burn wounds, is to compare the efficacy of Oleogel-S10 versus placebo according to the proportion of patients with complete closure of the target wound within 45 ± 7 days of treatment. Additional EB-focused endpoints include wound burden, patient-reported outcomes, and safety. Results Results of the primary endpoint are anticipated to be available by H2 2019. Trial registration ClinicalTrials.gov, NCT03068780. EudraCT, 2016–002066-32. Registered on 3 March 2017. Electronic supplementary material The online version of this article (10.1186/s13063-019-3362-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Johannes S Kern
- Dermatology Department, Royal Melbourne Hospital, Faculy of Medicine, Dentistry and Health Science, The University of Melbourne, Parkville, Victoria, Australia. .,Department of Dermatology, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany.
| | - Agnes Schwieger-Briel
- Department of Dermatology, University Childrens' Hospital Zurich, Zurich, Switzerland
| | | | | | | | - Anna E Martinez
- Department of Paediatric Dermatology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
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Chrobak E, Kadela-Tomanek M, Bębenek E, Marciniec K, Wietrzyk J, Trynda J, Pawełczak B, Kusz J, Kasperczyk J, Chodurek E, Paduszyński P, Boryczka S. New phosphate derivatives of betulin as anticancer agents: Synthesis, crystal structure, and molecular docking study. Bioorg Chem 2019; 87:613-28. [PMID: 30947097 DOI: 10.1016/j.bioorg.2019.03.060] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 02/27/2019] [Accepted: 03/19/2019] [Indexed: 12/21/2022]
Abstract
Betulin derivatives exhibit an antiproliferative activity and have been tested for many cancer cell lines. This paper describes a new series of 3-phosphate derivatives of betulin bearing different substituents at C28 position. The synthesized compounds were tested in vitro for their antiproliferative effect against human leukemia (MV-4-11 and CCRF/CEM), lung carcinoma (A549), prostate cancer (DU 145), melanoma (Hs 294T) cell lines, and murine leukemia P388. To explore the possible mechanism of anticancer activity for the most in vitro active compounds (4, 5, 7 and 8) and betulin, molecular docking was performed to the binding sites of potential anticancer targets, described for the various triterpene derivatives, including topoisomerase I and II, epidermal growth factor receptor (EGFR) and vascular endothelial growth factor (VEGFR), transcription factor NF-κB, anti-apoptotic protein Bcl-2 and peroxisome proliferator-activated receptor (PPARγ). According to the results of the docking, the best fit to the binding pocket of PPARγ was shown by compound 4.
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Abstract
Betulin (BE) is a pentacyclic triterpenes, obtained from natural sources and with several biological activities described, such as anti-tumoral and anti-inflammatory activities. The BE esterification at hydroxyl group (C-3 and C-28) resulted in five new ester derivatives with different numbers of carbons or halogens (chlorine and fluorine). Among these BE derivatives, two (2a e 2c) were able to significantly decrease IFN-g (*p = 0.0391; **p = 0.0156) and 2c modulated the expression of COX-2 better than Dexamethasone (DEXA). Regarding to cytotoxic assay, the best results were obtained for BE without modifications, with emphasis on tumoral cell lines Raji and MCF-7. The derivatives 2a and 2c showed immunomodulation activity (for the cytokines IFN-g). The presence of chorine in BE seems to be important for the ability of modulate COX-2 expression, since the ester chloride derivative 2c at 100 μM is more powerful inhibitor of COX-2 than DEXA.
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Affiliation(s)
- Sayonara Maria Calado Gonçalves
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Research Center Innovation Therapeutics Suely Galdino (NUPIT-SG), Federal University of Pernambuco, Recife, Brazil
| | - Glória Najara Silva
- Organic Synthesis Laboratory of Phytochemistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Ivan da Rocha Pitta
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Research Center Innovation Therapeutics Suely Galdino (NUPIT-SG), Federal University of Pernambuco, Recife, Brazil
| | - Moacyr Jesus Barreto de Melo Rêgo
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Research Center Innovation Therapeutics Suely Galdino (NUPIT-SG), Federal University of Pernambuco, Recife, Brazil
| | | | - Maira Galdino da Rocha Pitta
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Research Center Innovation Therapeutics Suely Galdino (NUPIT-SG), Federal University of Pernambuco, Recife, Brazil
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Frew Q, Rennekampff HO, Dziewulski P, Moiemen N, Zahn T, Hartmann B. Betulin wound gel accelerated healing of superficial partial thickness burns: Results of a randomized, intra-individually controlled, phase III trial with 12-months follow-up. Burns 2018; 45:876-890. [PMID: 30559054 DOI: 10.1016/j.burns.2018.10.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/23/2018] [Accepted: 10/25/2018] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Acceleration of wound healing promises advantages for patients and caregivers in reducing the burden of disease, avoiding complications such as wound infections, and improving the long-term outcome. However, medicines that can accelerate wound healing are lacking. The objective of this open, blindly evaluated, randomized, multicenter phase III study was to compare intra-individually the efficacy and tolerability of Oleogel-S10 with fatty gauze dressing versus Octenilin® wound gel with fatty gauze dressing in accelerating the healing of superficial partial thickness burn wounds. METHODS Acute superficial partial thickness burn wounds in adults caused by fire, heat burn or scalding were divided into 2 halves and randomly assigned to treatment with Oleogel-S10 or Octenilin® wound gel. Photos for observer-blinded analysis of wound healing were taken at each wound dressing change. Percentages of reepithelialization were assessed at defined intervals. Efficacy and tolerability were evaluated based on a 5-point Likert scale. RESULTS Of 61 patients that were enrolled, 57 received the allocated intervention and 48 completed treatment. The percentage of patients with earlier wound healing was significantly higher for Oleogel-S10 (85.7%, n=30) compared to Octenilin® wound gel (14.3%, n=5, p<0.0001). The mean intra-individual difference in time to wound closure was -1.0 day in favour of Oleogel-S10 (-1.4, -0.6; 95% CI, p<0.0001). Most investigators (87.0%) and patients (84.8%) evaluated the efficacy of Oleogel-S10 to be 'better' or 'much better' than that of Octenilin® wound gel. Long-term outcome 3 months and 12 months post injury was improved in some patients. CONCLUSIONS Oleogel-S10 (Episalvan) significantly accelerated the healing of superficial partial thickness burn wounds. It was safe and well tolerated.
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Affiliation(s)
- Quentin Frew
- St. Andrew's Centre for Plastic Surgery and Burns, Mid Essex Hospitals Trust, Broomfield Hospital, Chelmsford, UK
| | | | - Peter Dziewulski
- St. Andrew's Centre for Plastic Surgery and Burns, Mid Essex Hospitals Trust, Broomfield Hospital, Chelmsford, UK
| | - Naiem Moiemen
- Burns and Plastics, University Hospitals Birmingham NHS Foundation Trust Queen Elisabeth Hospital, Birmingham, UK
| | | | - Bernd Hartmann
- Burn Center with Plastic Surgery, Unfallkrankenhaus Berlin, Germany.
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Sułkowska-Ziaja K, Szewczyk A, Galanty A, Gdula-Argasińska J, Muszyńska B. Chemical composition and biological activity of extracts from fruiting bodies and mycelial cultures of Fomitopsis betulina. Mol Biol Rep 2018; 45:2535-2544. [PMID: 30317427 PMCID: PMC6267243 DOI: 10.1007/s11033-018-4420-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 10/04/2018] [Indexed: 12/29/2022]
Abstract
Fomitopsis betulina (Bull.) B.K. Cui, M.L. Han & Y.C. Dai has been used for medicinal purposes for over 5000 years. Numerous studies have confirmed the biological activity of compounds found in this species. The purpose of this study was a comparative analysis of selected groups of metabolites in the extracts from fruiting bodies and mycelial cultures. Phenolic acids (syringic, gallic, p-hydroxybenzoic, 3,4-dihydrophenylacetic), indole compounds (L-tryptophan, 5-hydroxy-L-tryptophan, 5-methyltryptamine), sterols (ergosterol, ergosterol peroxide, hexestrol, cholecalciferol), and triterpenes (betulinic acid, betulin) were determined quantitatively by high performance liquid chromatography with UV-Vis/DAD detection, while fatty acids were assessed with the gas chromatography method. Cytotoxic activity against selected human cancer cell lines was determined using the lactate dehydrogenase test. Anti-inflammatory activity was evaluated on lipopolysaccharide activated A549 cells. Those extracts with anti-inflammatory activity were evaluated for their inhibition of pro-inflammatory enzymes. The mycelium extract exhibited significant cytotoxic activity against prostate cancer cells, while the fruiting body extract indicated a moderate effect on the viability of melanoma and prostate cancer. Incubation of lung epithelial cells with biomass extract significantly decreased cyclooxygenase-2 levels compared to LPS activated A549 cells. This paper is the first report of a comparative quantitative analysis of the metabolites in mycelial cultures and fruiting bodies. In addition, a novel element of this study is its comparison of the cytotoxic and anti-inflammatory activity of the obtained extracts. The results of comparing the composition and activity of mycelium and fruiting bodies shows that the cultures could be proposed as a potential biotechnological source for selected biologically active compounds.
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Affiliation(s)
- Katarzyna Sułkowska-Ziaja
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland.
| | - Agnieszka Szewczyk
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Agnieszka Galanty
- Department of Pharmacognosy, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Joanna Gdula-Argasińska
- Department of Radioligands, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Bożena Muszyńska
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
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Karagöz AÇ, Leidenberger M, Hahn F, Hampel F, Friedrich O, Marschall M, Kappes B, Tsogoeva SB. Synthesis of new betulinic acid/betulin-derived dimers and hybrids with potent antimalarial and antiviral activities. Bioorg Med Chem 2018; 27:110-115. [PMID: 30503412 DOI: 10.1016/j.bmc.2018.11.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/31/2018] [Accepted: 11/13/2018] [Indexed: 02/07/2023]
Abstract
Severe malaria and viral infections cause life-threatening diseases in millions of people worldwide every year. In search for effective bioactive hybrid molecules, which may possess improved properties compared to their parent compounds, a series of betulinic acid/betulin based dimer and hybrid compounds carrying ferrocene and/or artesunic acid moieties, was designed and, synthesized de novo. Furthermore, they were analyzed in vitro against malaria parasites (growth inhibition of 3D7-strain P. falciparum-infected erythrocytes) and human cytomegalovirus (HCMV). From this series of hybrids/dimers, the betulinic acid/betulin and artesunic acid hybrids 11 and 12 showed the most potent activities against P. falciparum and HCMV. On the strength of results, additive and/or synergistic effects between the natural or semisynthetic products, such as betulinic acid-/betulin- and artesunic acid-derived compounds, are suggested on the basis of putatively complex modes of antimicrobial action. This advantage may be taken into account in future drug development.
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Affiliation(s)
- Aysun Çapcı Karagöz
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University of Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Maria Leidenberger
- Institute of Medical Biotechnology, University of Erlangen-Nürnberg, Paul-Gordon-Straße 3, 91052 Erlangen, Germany
| | - Friedrich Hahn
- Institute for Clinical and Molecular Virology, University of Erlangen-Nürnberg, Schlossgarten 4, 91054 Erlangen, Germany
| | - Frank Hampel
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University of Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, University of Erlangen-Nürnberg, Paul-Gordon-Straße 3, 91052 Erlangen, Germany
| | - Manfred Marschall
- Institute for Clinical and Molecular Virology, University of Erlangen-Nürnberg, Schlossgarten 4, 91054 Erlangen, Germany
| | - Barbara Kappes
- Institute of Medical Biotechnology, University of Erlangen-Nürnberg, Paul-Gordon-Straße 3, 91052 Erlangen, Germany
| | - Svetlana B Tsogoeva
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander University of Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany.
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Bębenek E, Kadela-Tomanek M, Chrobak E, Latocha M, Boryczka S. Novel triazoles of 3-acetyl betulin and betulone as anticancer agents. Med Chem Res 2018; 27:2051-2061. [PMID: 30220830 PMCID: PMC6133159 DOI: 10.1007/s00044-018-2213-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 06/27/2018] [Indexed: 11/28/2022]
Abstract
The CuAAC reaction of azides and acetylenic triterpenes was used for synthesis of new triazoles of 3-acetylbetulin and betulone. The triazole derivatives were evaluated for their anticancer activity in vitro against amelanotic melanoma C-32, ductal carcinoma T47D and glioblastoma SNB-19 cell lines. 28-[1-(3’-Deoxythymidine-5’-yl)-1H-1,2,3-triazol-4-yl]carbonylbetulone 6e exhibited a significant IC50 value (0.17 µM) against the human glioblastoma SNB-19 cell line, an almost 5-fold higher potency while compared with reference cisplatin.
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Affiliation(s)
- Ewa Bębenek
- Department of Organic Chemistry, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, 4 Jagiellońska Str., 41-200 Sosnowiec, Poland
| | - Monika Kadela-Tomanek
- Department of Organic Chemistry, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, 4 Jagiellońska Str., 41-200 Sosnowiec, Poland
| | - Elwira Chrobak
- Department of Organic Chemistry, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, 4 Jagiellońska Str., 41-200 Sosnowiec, Poland
| | - Małgorzata Latocha
- Department of Cell Biology, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, 8 Jedności Str., 41-200 Sosnowiec, Poland
| | - Stanisław Boryczka
- Department of Organic Chemistry, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, 4 Jagiellońska Str., 41-200 Sosnowiec, Poland
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Iftime MM, Marin L. Chiral betulin-imino-chitosan hydrogels by dynamic covalent sonochemistry. Ultrason Sonochem 2018; 45:238-247. [PMID: 29705318 DOI: 10.1016/j.ultsonch.2018.03.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 03/30/2018] [Accepted: 03/31/2018] [Indexed: 06/08/2023]
Abstract
A series of chiral hydrogels was prepared from a homogeneous mixture of chitosan and betulinic aldehyde in different molar ratios, under the effect of ultrasound. The hydrogelation mechanism has been investigated by FTIR and CD spectroscopy, wide angle X-ray diffraction and polarized light microscopy. The morphology of hydrogels was examined by SEM. The swelling ability has been tested in three media of different pH. It was concluded that hydrogelation occurred by different pathways, closely related to the peculiarities of the chitosan-betulin systems. Circular dichroism measurements revealed chiroptical properties of the hydrogels, correlated to their content and crosslinking pathway.
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Affiliation(s)
- Manuela Maria Iftime
- Petru Poni Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Luminita Marin
- Petru Poni Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania.
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Rajkumari J, Borkotoky S, Murali A, Suchiang K, Mohanty SK, Busi S. Attenuation of quorum sensing controlled virulence factors and biofilm formation in Pseudomonas aeruginosa by pentacyclic triterpenes, betulin and betulinic acid. Microb Pathog 2018. [PMID: 29526565 DOI: 10.1016/j.micpath.2018.03.012] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [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: 01/19/2023]
Abstract
The production of virulence determinants and biofilm formation in numerous pathogens is regulated by the cell-density-dependent phenomenon, Quorum sensing (QS). The QS system in multidrug resistant opportunistic pathogen, P. aeruginosa constitutes of three main regulatory circuits namely Las, Rhl, and Pqs which are closely linked to its pathogenicity and establishment of chronic infections. In spite intensive antibiotic therapy, P. aeruginosa continue to be an important cause of nosocomial infections and also the major cause of mortality in Cystic Fibrosis patients with 80% of the adults suffering from chronic P. aeruginosa infection. Hence, targeting QS circuit offers an effective intervention to the ever increasing problem of drug resistant pathogens. In the present study, the pentacyclic triterpenes i.e. Betulin (BT) and Betulinic acid (BA) exhibited significant attenuation in production of QS-regulated virulence factors and biofilm formation in P. aeruginosa, at the sub-lethal concentration. The test compound remarkably interfered in initial stages of biofilm development by decreasing the exopolysaccharide production and cell surface hydrophobicity. Based on the in vivo studies, the test compounds notably enhanced the survival of Caenorhabditis elegans infected with P. aeruginosa. Furthermore, molecular docking analysis revealed that BT and BA can act as a strong competitive inhibitor for QS receptors, LasR and RhlR. The findings suggest that BT and BA can serve as potential anti-infectives in the controlling chronic infection of P. aeruginosa.
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Affiliation(s)
- Jobina Rajkumari
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Subhomoi Borkotoky
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Ayaluru Murali
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Kitlangki Suchiang
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Saswat Kumar Mohanty
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Pondicherry University, Puducherry, India
| | - Siddhardha Busi
- Department of Microbiology, School of Life Sciences, Pondicherry University, Puducherry, India.
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Kurjogi M, Satapute P, Jogaiah S, Abdelrahman M, Daddam JR, Ramu V, Tran LP. Computational Modeling of the Staphylococcal Enterotoxins and Their Interaction with Natural Antitoxin Compounds. Int J Mol Sci 2018; 19:E133. [PMID: 29301344 DOI: 10.3390/ijms19010133] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 12/26/2017] [Accepted: 12/27/2017] [Indexed: 01/08/2023] Open
Abstract
Staphylococcus aureus is an opportunistic bacterium that produces various types of toxins, resulting in serious food poisoning. Staphylococcal enterotoxins (SEs) are heat-stable and resistant to hydrolysis by digestive enzymes, representing a potential hazard for consumers worldwide. In the present study, we used amino-acid sequences encoding SEA and SEB-like to identify their respective template structure and build the three-dimensional (3-D) models using homology modeling method. Two natural compounds, Betulin and 28-Norolean-12-en-3-one, were selected for docking study on the basis of the criteria that they satisfied the Lipinski’s Rule-of-Five. A total of 14 and 13 amino-acid residues were present in the best binding site predicted in the SEA and SEB-like, respectively, using the Computer Atlas of Surface Topology of Proteins (CASTp). Among these residues, the docking study with natural compounds Betulin and 28-Norolean-12-en-3-one revealed that GLN43 and GLY227 in the binding site of the SEA, each formed a hydrogen-bond interaction with 28-Norolean-12-en-3-one; while GLY227 residue established a hydrogen bond with Betulin. In the case of SEB-like, the docking study demonstrated that ASN87 and TYR88 residues in its binding site formed hydrogen bonds with Betulin; whereas HIS59 in the binding site formed a hydrogen-bond interaction with 28-Norolean-12-en-3-one. Our results demonstrate that the toxic effects of these two SEs can be effectively treated with antitoxins like Betulin and 28-Norolean-12-en-3-one, which could provide an effective drug therapy for this pathogen.
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