1
|
Oyadomari Y, Goto Y, Suganuma K, Kawazu SI, Becking LE, Fusetani N, Nakao Y. Aurantoside L, a New Tetramic Acid Glycoside with Anti-Leishmanial Activity Isolated from the Marine Sponge Siliquariaspongia japonica. Mar Drugs 2024; 22:171. [PMID: 38667788 PMCID: PMC11050911 DOI: 10.3390/md22040171] [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: 03/14/2024] [Revised: 04/04/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024] Open
Abstract
A new tetramic acid glycoside, aurantoside L (1), was isolated from the sponge Siliquariaspongia japonica collected at Tsushima Is., Nagasaki Prefecture, Japan. The structure of aurantoside L (1) composed of a tetramic acid bearing a chlorinated polyene system and a trisaccharide part was elucidated using spectral analysis. Aurantoside L (1) showed anti-parasitic activity against L. amazonensis with an IC50 value of 0.74 µM.
Collapse
Affiliation(s)
- Yasumoto Oyadomari
- Department of Chemistry and Biochemistry, Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan;
| | - Yasuyuki Goto
- Graduate School of Agricultural and Life Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan;
| | - Keisuke Suganuma
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Japan; (K.S.); (S.-i.K.)
| | - Shin-ichiro Kawazu
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Japan; (K.S.); (S.-i.K.)
| | - Leontine E. Becking
- Aquaculture & Fisheries Group, Wageningen University & Research, P.O. Box 338, Bode 32, 6700 AH Wageningen, The Netherlands;
- Naturalis Biodiversity Center, Darwinweg 2, 23333 CR Leiden, The Netherlands
| | - Nobuhiro Fusetani
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan;
| | - Yoichi Nakao
- Department of Chemistry and Biochemistry, Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan;
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan;
| |
Collapse
|
2
|
Qiu C, Arora P, Malik I, Laperuta AJ, Pavlovic EM, Ugochukwu S, Naik M, Kaplan CD. Thiolutin has complex effects in vivo but is a direct inhibitor of RNA polymerase II in vitro. Nucleic Acids Res 2024; 52:2546-2564. [PMID: 38214235 PMCID: PMC10954460 DOI: 10.1093/nar/gkad1258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 12/18/2023] [Accepted: 12/29/2023] [Indexed: 01/13/2024] Open
Abstract
Thiolutin is a natural product transcription inhibitor with an unresolved mode of action. Thiolutin and the related dithiolopyrrolone holomycin chelate Zn2+ and previous studies have concluded that RNA Polymerase II (Pol II) inhibition in vivo is indirect. Here, we present chemicogenetic and biochemical approaches to investigate thiolutin's mode of action in Saccharomyces cerevisiae. We identify mutants that alter sensitivity to thiolutin. We provide genetic evidence that thiolutin causes oxidation of thioredoxins in vivo and that thiolutin both induces oxidative stress and interacts functionally with multiple metals including Mn2+ and Cu2+, and not just Zn2+. Finally, we show direct inhibition of RNA polymerase II (Pol II) transcription initiation by thiolutin in vitro in support of classical studies that thiolutin can directly inhibit transcription in vitro. Inhibition requires both Mn2+ and appropriate reduction of thiolutin as excess DTT abrogates its effects. Pause prone, defective elongation can be observed in vitro if inhibition is bypassed. Thiolutin effects on Pol II occupancy in vivo are widespread but major effects are consistent with prior observations for Tor pathway inhibition and stress induction, suggesting that thiolutin use in vivo should be restricted to studies on its modes of action and not as an experimental tool.
Collapse
Affiliation(s)
- Chenxi Qiu
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Payal Arora
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Indranil Malik
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | | | | | | | - Mandar Naik
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Craig D Kaplan
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| |
Collapse
|
3
|
Kairytė K, Vaickelionienė R, Grybaitė B, Anusevičius K, Mickevičius V, Petrikaitė V. The Effect of 4-(Dimethylamino)phenyl-5-oxopyrrolidines on Breast and Pancreatic Cancer Cell Colony Formation, Migration, and Growth of Tumor Spheroids. Int J Mol Sci 2024; 25:1834. [PMID: 38339112 PMCID: PMC10855844 DOI: 10.3390/ijms25031834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
A series of hydrazones, azoles, and azines bearing a 4-dimethylaminophenyl-5-oxopyrrolidine scaffold was synthesized. Their cytotoxic effect against human pancreatic carcinoma Panc-1 and triple-negative breast cancer MDA-MB-231 cell lines was established by MTT assay. Pyrrolidinone derivatives 3c and 3d, with incorporated 5-chloro and 5-methylbenzimidazole fragments; hydrazone 5k bearing a 5-nitrothien-2-yl substitution; and hydrazone 5l with a naphth-1-yl fragment in the structure significantly decreased the viability of both cancer cell lines. Compounds 3c and 5k showed the highest selectivity, especially against the MDA-MB-231 cancer cell line. The EC50 values of the most active compound 5k against the MDA-MB231 cell line was 7.3 ± 0.4 μM, which were slightly higher against the Panc-1 cell line (10.2 ± 2.6 μM). Four selected pyrrolidone derivatives showed relatively high activity in a clonogenic assay. Compound 5k was the most active in both cell cultures, and it completely disturbed MDA-MB-231 cell colony growth at 1 and 2 μM and showed a strong effect on Panc-1 cell colony formation, especially at 2 μM. The compounds did not show an inhibitory effect on cell line migration by the 'wound-healing' assay. Compound 3d most efficiently inhibited the growth of Panc-1 spheroids and reduced cell viability in MDA-MB-231 spheroids. Considering these different activities in biological assays, the selected pyrrolidinone derivatives could be further tested to better understand the structure-activity relationship and their mechanism of action.
Collapse
Affiliation(s)
- Karolina Kairytė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (K.K.); (R.V.); (B.G.); (K.A.); (V.M.)
| | - Rita Vaickelionienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (K.K.); (R.V.); (B.G.); (K.A.); (V.M.)
| | - Birutė Grybaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (K.K.); (R.V.); (B.G.); (K.A.); (V.M.)
| | - Kazimieras Anusevičius
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (K.K.); (R.V.); (B.G.); (K.A.); (V.M.)
| | - Vytautas Mickevičius
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų Rd. 19, LT-50254 Kaunas, Lithuania; (K.K.); (R.V.); (B.G.); (K.A.); (V.M.)
| | - Vilma Petrikaitė
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio Al. 7, LT-10257 Vilnius, Lithuania
- Faculty of Medicine, Lithuanian University of Health Sciences, A. Mickevičiaus 9, LT-44307 Kaunas, Lithuania
- Laboratory of Drug Targets Histopathology, Institute of Cardiology, Lithuanian University of Health Sciences, Sukilėlių Pr. 13, LT-50162 Kaunas, Lithuania
| |
Collapse
|
4
|
Zwierzyńska E, Pietrzak B. The impact of brivaracetam on cognitive processes and anxiety in various experimental models. Pharmacol Rep 2024; 76:86-97. [PMID: 38182968 PMCID: PMC10830775 DOI: 10.1007/s43440-023-00564-3] [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: 08/23/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND Memory deficits and anxiety symptoms are undesirable effects that occur in epilepsy patients. They may be associated with the pathophysiology of the disease but also with anticonvulsant therapy. Brivaracetam (BRV) is one of the newest antiseizure drugs. It acts as a ligand for synaptic vesicle glycoprotein 2A (SV2A), which may play a significant role in cognitive processes. Although BRV has a favorable safety profile, its central side effects remain unclear. Hence, this study aimed to evaluate the effect of BRV on various types of memory and anxiety in rats. METHODS BRV was given to adult male Wistar rats (n = 80) via gastric tube as a single dose (6 mg/kg or 20 mg/kg) or chronically (6 mg/kg). The effect of the drug on spatial memory was evaluated in the Morris water maze (MWM), fear-learning by passive avoidance (PA), and recognition memory with novel object recognition (NOR). The elevated plus maze (EPM) was used to assess anxiety-like behaviors. RESULTS The impact of BRV on memory is dose-dependent and mainly high doses may alter retrieval memory and fear-learning. Sub-chronic administration also impaired retrieval and spatial memory in animals. Moreover, chronic BRV may increase anxiety levels in rats but did not affect recognition memory. CONCLUSIONS BRV may cause transient memory deficits as well as anxiety disturbances. However, the results are varied and depend on the type of memory, used dose, and duration of administration.
Collapse
Affiliation(s)
- Ewa Zwierzyńska
- Department of Pharmacodynamics, Medical University of Lodz, Muszyńskiego 1, 90-151, Łódź, Poland.
| | - Bogusława Pietrzak
- Department of Pharmacodynamics, Medical University of Lodz, Muszyńskiego 1, 90-151, Łódź, Poland
| |
Collapse
|
5
|
Li Y, Li L, Xiong W, Duan X, Xi H. Fluorochloridone induces mitochondrial dysfunction and apoptosis in primary goat Sertoli cells. Theriogenology 2024; 214:192-200. [PMID: 37897848 DOI: 10.1016/j.theriogenology.2023.10.028] [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: 03/30/2023] [Revised: 10/19/2023] [Accepted: 10/22/2023] [Indexed: 10/30/2023]
Abstract
Fluorochloridone (FLC), a pyrrolidone herbicide, has been recognized as a hazardous chemical. The in vitro adverse effects of FLC on the reproduction of livestock have not been assessed. This study was conducted to explore the cytotoxicity and toxicological mechanisms of FLC on cultured goat Sertoli cells. The results showed that FLC exposure significantly decreased goat Sertoli cell viability (p < 0.05) and induced oxidative stress. And FLC treatment promoted apoptosis and initiation of autophagy. Interestingly, FLC inhibited lysosomal biogenesis and blocked autophagic flux in goat Sertoli cells. The expression levels of autophagy-related proteins Atg5, LC3II, and p62 were significantly increased (p < 0.05) in FLC-treated goat Sertoli cells compared with the control. Importantly, FLC-induced ROS accumulation further causes mitochondrial dysfunction and disturbs mitophagy. FLC significantly decreased (p < 0.05) the expression levels of OPA1, MFN2, p-Drp1, FIS1, PINK1, and Parkin in goat Sertoli cells. Moreover, pretreatment with N-acetyl-l-cysteine (NAC, an antioxidant) significantly reduced (p < 0.01) FLC-induced ROS accumulation and reversed the disorder of autophagy levels. Our results indicated that FLC-induced toxicity in primary goat Sertoli cells was characterized by ROS accumulation, inducing oxidative stress, inhibiting lysosomal biogenesis, blocking autophagic flux, and promoting mitochondrial dysfunction, resulting in apoptosis via the mitochondrial pathway.
Collapse
Affiliation(s)
- Yuan Li
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection & Internet Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, 311300, People's Republic of China
| | - Lishu Li
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection & Internet Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, 311300, People's Republic of China
| | - Wenjie Xiong
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection & Internet Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, 311300, People's Republic of China
| | - Xing Duan
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection & Internet Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, 311300, People's Republic of China.
| | - Huaming Xi
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection & Internet Technology, Zhejiang International Science and Technology Cooperation Base for Veterinary Medicine and Health Management, China-Australia Joint Laboratory for Animal Health Big Data Analytics, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, Hangzhou, 311300, People's Republic of China.
| |
Collapse
|
6
|
Love RWB. Aniracetam: An Evidence-Based Model for Preventing the Accumulation of Amyloid-β Plaques in Alzheimer's Disease. J Alzheimers Dis 2024; 98:1235-1241. [PMID: 38552113 DOI: 10.3233/jad-231247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Alzheimer's disease is the leading cause of dementia in the world. It affects 6 million people in the United States and 50 million people worldwide. Alzheimer's disease is characterized by the accumulation of amyloid-β plaques (Aβ), an increase in tau protein neurofibrillary tangles, and a loss of synapses. Since the 1990s, removing and reducing Aβ has been the focus of Alzheimer's treatment and prevention research. The accumulation of Aβ can lead to oxidative stress, inflammation, neurotoxicity, and eventually apoptosis. These insults impair signaling systems in the brain, potentially leading to memory loss and cognitive decline. Aniracetam is a safe, effective, cognitive-enhancing drug that improves memory in both human and animal studies. Aniracetam may prevent the production and accumulation of Aβ by increasing α-secretase activity through two distinct pathways: 1) increasing brain derived neurotrophic factor expression and 2) positively modulating metabotropic glutamate receptors. This is the first paper to propose an evidence-based model for aniracetam reducing the accumulation and production of Aβ.
Collapse
Affiliation(s)
- Robert W B Love
- Research Department, Brain Fit For Life, LLC, Lewes, DE, USA
| |
Collapse
|
7
|
Zubrickė I, Jonuškienė I, Kantminienė K, Tumosienė I, Petrikaitė V. Synthesis and In Vitro Evaluation as Potential Anticancer and Antioxidant Agents of Diphenylamine-Pyrrolidin-2-one-Hydrazone Derivatives. Int J Mol Sci 2023; 24:16804. [PMID: 38069128 PMCID: PMC10871122 DOI: 10.3390/ijms242316804] [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: 11/04/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/18/2023] Open
Abstract
The title compounds were synthesized by the reaction of 5-oxo-1-(4-(phenylamino)phenyl)pyrrolidine-3-carbohydrazide with various aldehydes bearing aromatic and heterocyclic moieties and acetophenones, and their cytotoxicity was tested via MTT assay against human triple-negative breast cancer MDA-MB-231, human melanoma IGR39, human pancreatic carcinoma Panc-1, and prostate cancer cell line PPC-1. Furthermore, the selectivity of compounds towards cancer cells compared to fibroblasts was also investigated. Four compounds were identified as the most promising anticancer agents out of a series of pyrrolidinone-hydrazone derivatives bearing a diphenylamine moiety. These compounds were most selective against the prostate cancer cell line PPC-1 and the melanoma cell lines IGR39, with EC50 values in the range of 2.5-20.2 µM against these cell lines. In general, the compounds were less active against triple-negative breast cancer MDA-MB-231 cell line, and none of them showed an inhibitory effect on the migration of these cells. In the 'wound healing' assay, N'-((5-nitrothiophen-2-yl)methylene)-5-oxo-1-(4-(phenylamino)phenyl)pyrrolidine-3-carbohydrazide was identified as the most promising derivative that could be further developed as an antimetastatic agent. N'-(5-chloro- and N'-(3,4-dichlorobenzylidene)-5-oxo-1-(4-(phenylamino)phenyl)pyrrolidine-3-carbohydrazides most efficiently reduced the cell viability in IGR39 cell spheroids, while there was no effect of the investigated pyrrolidinone-hydrazone derivatives on PPC-1 3D cell cultures. Antioxidant activity determined via FRAP assay of N'-(1-(4-aminophenyl)ethylidene)-5-oxo-1-(4-(phenylamino)phenyl)pyrrolidine-3-carbohydrazide was 1.2 times higher than that of protocatechuic acid.
Collapse
Affiliation(s)
- Irma Zubrickė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, 50254 Kaunas, Lithuania; (I.Z.); (I.J.); (I.T.)
| | - Ilona Jonuškienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, 50254 Kaunas, Lithuania; (I.Z.); (I.J.); (I.T.)
| | - Kristina Kantminienė
- Department of Physical and Inorganic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, 50254 Kaunas, Lithuania
| | - Ingrida Tumosienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, 50254 Kaunas, Lithuania; (I.Z.); (I.J.); (I.T.)
| | - Vilma Petrikaitė
- Laboratory of Drug Targets Histopathology, Institute of Cardiology, Lithuanian University of Health Sciences, Sukilėlių pr. 13, 50162 Kaunas, Lithuania
- Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio al. 7, 10257 Vilnius, Lithuania
| |
Collapse
|
8
|
Borozdenko DA, Gonchar DI, Bogorodova VI, Tarasenko DV, Kramarova EP, Khovanova SS, Golubev YV, Kiseleva NM, Shmigol TA, Ezdoglian AA, Sobyanin KA, Negrebetsky VV, Baukov YI. The Antidepressant Activity of a Taurine-Containing Derivative of 4-Phenylpyrrolidone-2 in a Model of Chronic Unpredictable Mild Stress. Int J Mol Sci 2023; 24:16564. [PMID: 38068887 PMCID: PMC10705968 DOI: 10.3390/ijms242316564] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 11/14/2023] [Accepted: 11/18/2023] [Indexed: 12/18/2023] Open
Abstract
This study investigates the therapeutic potential of a new compound, potassium 2-[2-(2-oxo-4-phenylpyrrolidin-1-yl) acetamido]ethanesulfonate (Compound I), in depression. Willner's chronic unpredictable mild stress model of male Wistar rats was used as a depression model. The rats were randomized into four groups, including an intact group, a Compound I group, a Fluoxetine group, and a control group with saline. Behavioral tests, such as the Porsolt forced swim test, hole-board test, elevated plus maze test, and light-dark box, were used to assess the animals' conditions. Our results demonstrated that Compound I effectively reduced the immobilization time of rats in the forced swim test, increased orientation and exploratory behavior, and decreased the latency period of going into the dark compartment compared to the control group. Hippocampal and striatal serotonin concentrations were increased in the Compound I group, and the compound also reduced the level of corticosterone in the blood plasma of rats compared to the intact animals. These results suggest that Compound I has reliable antidepressant activity, comparable to that of the reference antidepressant Fluoxetine.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Yuri I. Baukov
- Institute of Pharmacy and Medicinal Chemistry, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (D.A.B.); (D.I.G.); (V.I.B.); (D.V.T.); (E.P.K.); (S.S.K.); (Y.V.G.); (N.M.K.); (T.A.S.); (A.A.E.); (K.A.S.); (V.V.N.)
| |
Collapse
|
9
|
Demir Ö, Zeng H, Schulz B, Schrey H, Steinert M, Stadler M, Surup F. Bioactive Compounds from an Endophytic Pezicula sp. Showing Antagonistic Effects against the Ash Dieback Pathogen. Biomolecules 2023; 13:1632. [PMID: 38002314 PMCID: PMC10669340 DOI: 10.3390/biom13111632] [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: 09/20/2023] [Revised: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
A fungal endophyte originating from the Canary Islands was identified as a potent antagonist against the fungal phytopathogen Hymenoscyphus fraxineus, which causes the devastating ash dieback disease. This endophyte was tentatively identified as Pezicula cf. ericae, using molecular barcoding. Isolation of secondary metabolites by preparative high-performance liquid chromatography (HPLC) yielded the known compounds CJ-17,572 (1), mycorrhizin A (3) and cryptosporioptides A-C (4-6), besides a new N-acetylated dihydroxyphenylalanin derivative 2, named peziculastatin. Planar structures were elucidated by NMR and HRMS data, while the relative stereochemistry of 2 was assigned by H,H and C,H coupling constants. The assignment of the unknown stereochemistry of CJ-17,572 (1) was hampered by the broadening of NMR signals. Nevertheless, after semisynthetic conversion of 1 into its methyl derivatives 7 and 8, presumably preventing tautomeric effects, the relative configuration could be assigned, whereas comparison of ECD data to those of related compounds determined the absolute configuration. Metabolites 1 and 3 showed significant antifungal effects in vitro against H. fraxineus. Furthermore, 4-6 exhibited significant dispersive effects on preformed biofilms of S. aureus at concentrations up to 2 µg/mL, while the biofilm formation of C. albicans was also inhibited. Thus, cryptosporioptides might constitute a potential source for the development of novel antibiofilm agents.
Collapse
Affiliation(s)
- Özge Demir
- Department Microbial Drugs, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany; (Ö.D.); (H.Z.); (H.S.); (M.S.)
| | - Haoxuan Zeng
- Department Microbial Drugs, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany; (Ö.D.); (H.Z.); (H.S.); (M.S.)
| | - Barbara Schulz
- Institute of Microbiology, Technical University of Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany; (B.S.); (M.S.)
| | - Hedda Schrey
- Department Microbial Drugs, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany; (Ö.D.); (H.Z.); (H.S.); (M.S.)
- Institute of Microbiology, Technical University of Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany; (B.S.); (M.S.)
| | - Michael Steinert
- Institute of Microbiology, Technical University of Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany; (B.S.); (M.S.)
| | - Marc Stadler
- Department Microbial Drugs, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany; (Ö.D.); (H.Z.); (H.S.); (M.S.)
- Institute of Microbiology, Technical University of Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany; (B.S.); (M.S.)
| | - Frank Surup
- Department Microbial Drugs, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany; (Ö.D.); (H.Z.); (H.S.); (M.S.)
- Institute of Microbiology, Technical University of Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany; (B.S.); (M.S.)
| |
Collapse
|
10
|
Palla SR, Li CW, Chao TL, Lo HLV, Liu JJ, Pan MYC, Chiu YT, Lin WC, Hu CW, Yang CM, Chen YY, Fang JT, Lin SW, Lin YT, Lin HC, Kuo CJ, Wang LHC, Chang SY, Liang PH. Synthesis, evaluation, and mechanism of 1-(4-(arylethylenylcarbonyl)phenyl)-4-carboxy-2-pyrrolidinones as potent reversible SARS-CoV-2 entry inhibitors. Antiviral Res 2023; 219:105735. [PMID: 37858764 DOI: 10.1016/j.antiviral.2023.105735] [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: 05/01/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/21/2023]
Abstract
A class of 1-(4-(arylethylenylcarbonyl)phenyl)-4-carboxy-2-pyrrolidinones were designed and synthesized via Michael addition, cyclization, aldol condensation, and deprotonation to inhibit the human transmembrane protease serine 2 (TMPRSS2) and Furin, which are involved in priming the SARS-CoV-2 Spike for virus entry. The most potent inhibitor 2f (81) was found to efficiently inhibit the replication of various SARS-CoV-2 delta and omicron variants in VeroE6 and Calu-3 cells, with EC50 range of 0.001-0.026 μM by pre-incubation with the virus to avoid the virus entry. The more potent antiviral activities than the proteases inhibitory activities led to discovery that the synthesized compounds also inhibited Spike's receptor binding domain (RBD):angiotensin converting enzyme 2 (ACE2) interaction as a main target, and their antiviral activities were enhanced by inhibiting TMPRSS2 and/or Furin. To further confirm the blocking effect of 2f (81) on virus entry, SARS-CoV-2 Spike pseudovirus was used in the entry assay and the results showed that the compound inhibited the pseudovirus entry in a ACE2-dependent pathway, via mainly inhibiting RBD:ACE2 interaction and TMPRSS2 activity in Calu-3 cells. Finally, in the in vivo animal model of SARS-CoV-2 infection, the oral administration of 25 mg/kg 2f (81) in hamsters resulted in reduced bodyweight loss and 5-fold lower viral RNA levels in nasal turbinate three days post-infection. Our findings demonstrated the potential of the lead compound for further preclinical investigation as a potential treatment for SARS-CoV-2.
Collapse
Affiliation(s)
- Srinivasa Rao Palla
- Institute of Biochemical Sciences, National Taiwan University, 10617, Taiwan; Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
| | - Chen-Wei Li
- Institute of Biochemical Sciences, National Taiwan University, 10617, Taiwan
| | - Tai-Ling Chao
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University, Taipei 10048, Taiwan
| | - Hoi-Ling Vienn Lo
- Institute of Biochemical Sciences, National Taiwan University, 10617, Taiwan
| | - Jia-Jin Liu
- Institute of Biochemical Sciences, National Taiwan University, 10617, Taiwan
| | - Max Yu-Chen Pan
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Ting Chiu
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Wen-Chin Lin
- Institute of Preventive Medicine, National Defense Medical Center, New Taipei City 23742, Taiwan; Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei 11490, Taiwan
| | - Chih-Wei Hu
- Institute of Preventive Medicine, National Defense Medical Center, New Taipei City 23742, Taiwan; Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei 11490, Taiwan; Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan
| | - Chuen-Mi Yang
- Institute of Preventive Medicine, National Defense Medical Center, New Taipei City 23742, Taiwan
| | - Yi-Ying Chen
- Institute of Preventive Medicine, National Defense Medical Center, New Taipei City 23742, Taiwan; Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan
| | - Jun-Tung Fang
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University, Taipei 10048, Taiwan
| | - Sheng-Wei Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Yi-Tzu Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Hsiao-Ching Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan; Institute of Biochemical Sciences, National Taiwan University, 10617, Taiwan; Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan
| | - Chih-Jung Kuo
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan.
| | - Lily Hui-Ching Wang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan; School of Medicine, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Sui-Yuan Chang
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University, Taipei 10048, Taiwan; Department of Laboratory Medicine, National Taiwan University Hospital, Taipei 10002, Taiwan.
| | - Po-Huang Liang
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan; Institute of Biochemical Sciences, National Taiwan University, 10617, Taiwan; Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan.
| |
Collapse
|
11
|
Mejia-Bautista A, Michelson HB, Sanjana A, Famuyiwa O, Goodman JH, Ling DSF. 4-AP challenge reveals that early intervention with brivaracetam prevents posttraumatic epileptogenesis in rats. Epilepsy Res 2023; 196:107217. [PMID: 37619297 DOI: 10.1016/j.eplepsyres.2023.107217] [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: 06/30/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023]
Abstract
PURPOSE There are currently no clinical treatments to prevent posttraumatic epilepsy (PTE). Recently, our group has shown that administration of levetiracetam (LEV) or brivaracetam (BRV) shortly after cortical neurotrauma prevents the development of epileptiform activity in rats, as measured ex vivo in neocortical slices. Due to the low incidence of spontaneous seizures in rodent-based models of traumatic brain injury (TBI), chemoconvulsants have been used to test injured animals for seizure susceptibility. We used a low dose of the voltage-gated potassium channel blocker 4-aminopyridine (4-AP) to evaluate posttraumatic epileptogenesis after controlled cortical impact (CCI) injury. We then used this assessment to further investigate the efficacy of BRV as an antiepileptogenic treatment. METHODS Sprague-Dawley rats aged P24-35 were subjected to severe CCI injury. Following trauma, one group received BRV-21 mg/kg (IP) at 0-2 min after injury and the other BRV-100 mg/kg (IP) at 30 min after injury. Four to eight weeks after injury, animals were given a single, low dose of 4-AP (3.0-3.5 mg/kg, IP) and then monitored up to 90 min for stage 4/5 seizures. RESULTS The chemoconvulsant challenge revealed that within four to eight weeks, CCI injury led to a two-fold increase in percentage of rats with 4-AP induced stage 4-5 seizures relative to sham-injured controls. Administration of a single dose of BRV within 30 min after trauma significantly reduced injury-induced seizure susceptibility, bringing the proportion of CCI-rats that exhibited evoked seizures down to control levels. CONCLUSIONS This study is the first to use a low dose of 4-AP as a chemoconvulsant challenge to test epileptogenicity within the first two months after CCI injury in rats. Our findings show that a single dose of BRV administered within 30 min after TBI prevents injury-induced increases in seizure susceptibility. This supports our hypothesis that early intervention with BRV may prevent PTE.
Collapse
Affiliation(s)
- Ana Mejia-Bautista
- Department of Physiology and Pharmacology, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Program in Neural and Behaviroal Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Robert F. Furchgott Center for Behavioral and Neural Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA.
| | - Hillary B Michelson
- Department of Physiology and Pharmacology, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Program in Neural and Behaviroal Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Robert F. Furchgott Center for Behavioral and Neural Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA
| | - Anika Sanjana
- Department of Physiology and Pharmacology, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Program in Neural and Behaviroal Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Robert F. Furchgott Center for Behavioral and Neural Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA
| | - Oluwafunmilayo Famuyiwa
- Department of Physiology and Pharmacology, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Robert F. Furchgott Center for Behavioral and Neural Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA
| | - Jeffrey H Goodman
- Department of Physiology and Pharmacology, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Department of Neurology, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Program in Neural and Behaviroal Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Robert F. Furchgott Center for Behavioral and Neural Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Department of Developmental Neurobiology, The New York State Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314, USA
| | - Douglas S F Ling
- Department of Physiology and Pharmacology, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Program in Neural and Behaviroal Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA; Robert F. Furchgott Center for Behavioral and Neural Science, SUNY Downstate Health Sciences University, 450 Clarkson Ave, Brooklyn, NY 11203, USA
| |
Collapse
|
12
|
Aulicino PC, Momin Z, Rozenszajn M, Monzon A, Arazi-Caillaud S, Bologna R, Mangano A, Kimata JT. HIV-1 subtype F integrase polymorphisms external to the catalytic core domain contribute to severe loss of replication capacity in context of the integrase inhibitor resistance mutation Q148H. J Antimicrob Chemother 2022; 77:2793-2802. [PMID: 35897124 PMCID: PMC9989736 DOI: 10.1093/jac/dkac238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/20/2022] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND In prior studies, HIV-1 BF recombinants with subtype F integrases failed to develop resistance to raltegravir through the Q148H mutational pathway. We aimed to determine the role of subtype-specific polymorphisms in integrase on drug susceptibility, viral replication and integration. METHODS Integrase sequences were retrieved from the Los Alamos Database or obtained from the Garrahan HIV cohort. HIV-1 infectious molecular clones with or without Q148H (+ G140S) resistance mutations were constructed using integrases of subtype B (NL4-3) or F1(BF) ARMA159 and URTR23. Integrase chimeras were generated by reciprocal exchanges of a 200 bp fragment spanning amino acids 85-150 of the catalytic core domain (CCD) of NL4-3-Q148H and either ARMA159-Q148H or URTR23-Q148H. Viral infections were quantified by p24 ELISA and Alu-gag integration PCR assay. RESULTS At least 18 different polymorphisms distinguish subtype B from F1(BF) recombinant integrases. In phenotypic experiments, p24 at Day 15 post-infection was high (105-106 pg/mL) for WT and NL4-3-Q148H; by contrast, it was low (102-104 pg/mL) for both F1(BF)-Q148H + G140S viruses, and undetectable for the Q148H mutants. Compared with WT viruses, integrated DNA was reduced by 5-fold for NL4-3-Q148H (P = 0.05), 9-fold for URTR23-Q148H (P = 0.01) and 16000-fold for ARMA159-Q148H (P = 0.01). Reciprocal exchange between B and F1(BF) of an integrase CCD region failed to rescue the replicative defect of F1(BF) integrase mutants. CONCLUSIONS The functional impairment of Q148H in the context of subtype F integrases from BF recombinants explains the lack of selection of this pathway in vivo. Non-B polymorphisms external to the integrase CCD may influence the pathway to integrase strand transfer inhibitor resistance.
Collapse
Affiliation(s)
- Paula C Aulicino
- Laboratory of Cellular Biology and Retroviruses, Unit of Virology and Molecular Epidemiology, Hospital de Pediatría “Prof. Dr. Juan P. Garrahan”, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Zoha Momin
- Department of Molecular Virology & Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Mijael Rozenszajn
- Laboratory of Cellular Biology and Retroviruses, Unit of Virology and Molecular Epidemiology, Hospital de Pediatría “Prof. Dr. Juan P. Garrahan”, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Arturo Monzon
- Department of Molecular Virology & Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Solange Arazi-Caillaud
- Unit of Epidemiology and Infectology, Hospital de Pediatría “Prof. Dr. Juan P. Garrahan”, Buenos Aires, Argentina
| | - Rosa Bologna
- Unit of Epidemiology and Infectology, Hospital de Pediatría “Prof. Dr. Juan P. Garrahan”, Buenos Aires, Argentina
| | - Andrea Mangano
- Laboratory of Cellular Biology and Retroviruses, Unit of Virology and Molecular Epidemiology, Hospital de Pediatría “Prof. Dr. Juan P. Garrahan”, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Jason T Kimata
- Department of Molecular Virology & Microbiology, Baylor College of Medicine, Houston, TX, USA
| |
Collapse
|
13
|
Markovič T, Podgornik H, Avsec D, Nabergoj S, Mlinarič-Raščan I. The Enhanced Cytotoxic Effects in B-Cell Leukemia and Lymphoma Following Activation of Prostaglandin EP4 Receptor and Targeting of CD20 Antigen by Monoclonal Antibodies. Int J Mol Sci 2022; 23:ijms23031599. [PMID: 35163524 PMCID: PMC8835876 DOI: 10.3390/ijms23031599] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/21/2022] [Accepted: 01/27/2022] [Indexed: 01/25/2023] Open
Abstract
Anti-CD20 monoclonal antibodies (MAbs) have revolutionized the treatment of B-cell leukemia and lymphoma. However, many patients do not respond to such treatment due to either deficiency of the complementary immune response or resistance to apoptosis. Other currently available treatments are often inadequate or induce major side effects. Therefore, there is a constant need for improved therapies. The prostaglandin E2 receptor 4 (EP4) receptor has been identified as a promising therapeutic target for hematologic B-cell malignancies. Herein, we report that EP4 receptor agonists PgE1-OH and L-902688 have exhibited enhanced cytotoxicity when applied together with anti-CD20 MAbs rituximab, ofatumumab and obinutuzumab in vitro in Burkitt lymphoma cells Ramos, as well as in p53-deficient chronic lymphocytic leukemia (CLL) cells MEC-1. Moreover, the enhanced cytotoxic effects of EP4 receptor agonists and MAbs targeting CD20 have been identified ex vivo on primary lymphocytes B obtained from patients diagnosed with CLL. Incubation of cells with PgE1-OH and L-902688 preserved the expression of CD20 molecules, further confirming the anti-leukemic potential of EP4 receptor agonists in combination with anti-CD20 MAbs. Additionally, we demonstrated that the EP4 receptor agonist PgE-1-OH induced apoptosis and inhibited proliferation via the EP4 receptor triggering in CLL. This work has revealed very important findings leading towards the elucidation of the anticancer potential of PgE1-OH and L-902688, either alone or in combination with MAbs. This may contribute to the development of potential therapeutic alternatives for patients with B-cell malignancies.
Collapse
MESH Headings
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antigens, CD20/immunology
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Cell Survival/drug effects
- Drug Synergism
- Gene Expression Regulation, Neoplastic/drug effects
- Heptanoic Acids/pharmacology
- Humans
- Leukemia, B-Cell/drug therapy
- Leukemia, B-Cell/metabolism
- Lymphoma, B-Cell/drug therapy
- Lymphoma, B-Cell/metabolism
- Pyrrolidinones/pharmacology
- Receptors, Prostaglandin E, EP4 Subtype/agonists
- Receptors, Prostaglandin E, EP4 Subtype/metabolism
- Rituximab/pharmacology
- Rituximab/therapeutic use
- Tetrazoles/pharmacology
Collapse
Affiliation(s)
- Tijana Markovič
- Faculty of Pharmacy, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (T.M.); (H.P.); (D.A.); (S.N.)
| | - Helena Podgornik
- Faculty of Pharmacy, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (T.M.); (H.P.); (D.A.); (S.N.)
- Department of Haematology, University Medical Centre Ljubljana, SI-1000 Ljubljana, Slovenia
| | - Damjan Avsec
- Faculty of Pharmacy, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (T.M.); (H.P.); (D.A.); (S.N.)
| | - Sanja Nabergoj
- Faculty of Pharmacy, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (T.M.); (H.P.); (D.A.); (S.N.)
| | - Irena Mlinarič-Raščan
- Faculty of Pharmacy, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (T.M.); (H.P.); (D.A.); (S.N.)
- Correspondence:
| |
Collapse
|
14
|
Arora R, Van Theemsche KM, Van Remoortel S, Snyders DJ, Labro AJ, Timmermans JP. Constitutive, Basal, and β-Alanine-Mediated Activation of the Human Mas-Related G Protein-Coupled Receptor D Induces Release of the Inflammatory Cytokine IL-6 and Is Dependent on NF-κB Signaling. Int J Mol Sci 2021; 22:ijms222413254. [PMID: 34948051 PMCID: PMC8703779 DOI: 10.3390/ijms222413254] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/03/2021] [Accepted: 12/04/2021] [Indexed: 12/14/2022] Open
Abstract
G protein-coupled receptors (GPCRs) have emerged as key players in regulating (patho)physiological processes, including inflammation. Members of the Mas-related G protein coupled receptors (MRGPRs), a subfamily of GPCRs, are largely expressed by sensory neurons and known to modulate itch and pain. Several members of MRGPRs are also expressed in mast cells, macrophages, and in cardiovascular tissue, linking them to pseudo-allergic drug reactions and suggesting a pivotal role in the cardiovascular system. However, involvement of the human Mas-related G-protein coupled receptor D (MRGPRD) in the regulation of the inflammatory mediator interleukin 6 (IL-6) has not been demonstrated to date. By stimulating human MRGPRD-expressing HeLa cells with the agonist β-alanine, we observed a release of IL-6. β-alanine-induced signaling through MRGPRD was investigated further by probing downstream signaling effectors along the Gαq/Phospholipase C (PLC) pathway, which results in an IkB kinases (IKK)-mediated canonical activation of nuclear factor kappa-B (NF-κB) and stimulation of IL-6 release. This IL-6 release could be blocked by a Gαq inhibitor (YM-254890), an IKK complex inhibitor (IKK-16), and partly by a PLC inhibitor (U-73122). Additionally, we investigated the constitutive (ligand-independent) and basal activity of MRGPRD and concluded that the observed basal activity of MRGPRD is dependent on the presence of fetal bovine serum (FBS) in the culture medium. Consequently, the dynamic range for IL-6 detection as an assay for β-alanine-mediated activation of MRGPRD is substantially increased by culturing the cells in FBS free medium before treatment. Overall, the observation that MRGPRD mediates the release of IL-6 in an in vitro system, hints at a role as an inflammatory mediator and supports the notion that IL-6 can be used as a marker for MRGPRD activation in an in vitro drug screening assay.
Collapse
Affiliation(s)
- Rohit Arora
- Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, 2610 Wilrijk, Belgium; (R.A.); (S.V.R.)
- Laboratory for Molecular, Cellular and Network Excitability, Department of Biomedical Sciences, University of Antwerp, 2610 Wilrijk, Belgium; (K.M.V.T.); (D.J.S.)
| | - Kenny M. Van Theemsche
- Laboratory for Molecular, Cellular and Network Excitability, Department of Biomedical Sciences, University of Antwerp, 2610 Wilrijk, Belgium; (K.M.V.T.); (D.J.S.)
| | - Samuel Van Remoortel
- Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, 2610 Wilrijk, Belgium; (R.A.); (S.V.R.)
| | - Dirk J. Snyders
- Laboratory for Molecular, Cellular and Network Excitability, Department of Biomedical Sciences, University of Antwerp, 2610 Wilrijk, Belgium; (K.M.V.T.); (D.J.S.)
| | - Alain J. Labro
- Laboratory for Molecular, Cellular and Network Excitability, Department of Biomedical Sciences, University of Antwerp, 2610 Wilrijk, Belgium; (K.M.V.T.); (D.J.S.)
- Department of Basic and Applied Medical Sciences, Ghent University, 9000 Ghent, Belgium
- Correspondence: (A.J.L.); (J.-P.T.); Tel.: +32-9-3320034 (A.J.L.); +32-3-2653327 (J.-P.T.)
| | - Jean-Pierre Timmermans
- Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, 2610 Wilrijk, Belgium; (R.A.); (S.V.R.)
- Correspondence: (A.J.L.); (J.-P.T.); Tel.: +32-9-3320034 (A.J.L.); +32-3-2653327 (J.-P.T.)
| |
Collapse
|
15
|
Croft SN, Walker EJ, Ghildyal R. RIPK1 Is Cleaved by 3C Protease of Rhinovirus A and B Strains and Minor and Major Groups. Viruses 2021; 13:2402. [PMID: 34960671 PMCID: PMC8703350 DOI: 10.3390/v13122402] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 11/30/2022] Open
Abstract
Rhinoviruses (RV), like many other viruses, modulate programmed cell death to their own advantage. The viral protease, 3C has an integral role in the modulation, and we have shown that RVA-16 3C protease cleaves Receptor-interacting protein kinase-1 (RIPK1), a key host factor that modulates various cell death and cell survival pathways. In the current study, we have investigated whether this cleavage is conserved across selected RV strains. RIPK1 was cleaved in cells infected with strains representing diversity across phylogenetic groups (A and B) and receptor usage (major and minor groups). The cleavage was abrogated in the presence of the specific 3C protease inhibitor, Rupintrivir. Interestingly, there appears to be involvement of another protease (maybe 2A protease) in RIPK1 cleavage in strains belonging to genotype B. Our data show that 3C protease from diverse RV strains cleaves RIPK1, highlighting the importance of the cleavage to the RV lifecycle.
Collapse
Affiliation(s)
- Sarah N. Croft
- John Curtin School of Medical Research, Australian National University, Canberra 2601, Australia;
| | - Erin J. Walker
- Centre for Research in Therapeutic Solutions, Faculty of Science and Technology, University of Canberra, Canberra 2617, Australia;
| | - Reena Ghildyal
- Centre for Research in Therapeutic Solutions, Faculty of Science and Technology, University of Canberra, Canberra 2617, Australia;
| |
Collapse
|
16
|
Aboudzadeh N, Khavandi A, Javadpour J, Shokrgozar MA, Imani M. Effect of Dioxane and N-Methyl-2-pyrrolidone as a Solvent on Biocompatibility and Degradation Performance of PLGA/nHA Scaffolds. Iran Biomed J 2021; 25:408-16. [PMID: 34641642 PMCID: PMC8744699 DOI: 10.52547/ibj.25.6.408] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 06/24/2021] [Indexed: 11/18/2022]
Abstract
Background Solvent casting/particulate leaching is one of the most conventional methods for fabricating polymer/ceramic composite scaffolds. In this method, the solvent generally affects resulting scaffold properties, including porosity and degradation rate. Methods Herein, composite scaffolds of PLGA (poly(lactide-co-glycolide))/ nano-hydroxyapatite (nHA) with different percentages of nHA (25, 35, and 45 wt. %) were prepared by the solvent casting/particle leaching combined with freeze drying. The effects of two different solvents, 1,4-dioxane (DIO) and N-methyl-2-pyrrolidone (NMP), on morphology, porosity, bioactivity, degradation rate, and biocompatibility of the resulting scaffolds were investigated. Results The results revealed that increasing the nano-hydroxyapatite (nHA) percentages had no significant effect on the porosity and interconectivity of scaffolds (p > 0.05), whereas altering the solvent from DIO into NMP decreased the porosity from about 87% into 71%, respectively. Moreover, scaffolds of DIO illustrated the high results of cell proliferation compared to those of NMP; the cell viability of GD25 decreased from 85% to 65% for GN25. The findings also indicated that scaffolds prepared by NMP had a higher rate of losing weight in comparison to DIO. Adding nHA to PLGA had a significant effect on the bioactivity of scaffolds (p < 0.05), composite scaffolds with 45 wt % nHA had at least 30% more weight gain compared to the neat polymer scaffolds. Conclusion The DIO scaffolds have higher rates of porosity, interconnectivity, bioactivity, and biocompatibility than NMP scaffolds due to its high evaporation rate.
Collapse
Affiliation(s)
- Neda Aboudzadeh
- Department of Materials Science and Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Alireza Khavandi
- Department of Materials Science and Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
| | - Jafar Javadpour
- Department of Materials Science and Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
| | | | - Mohammad Imani
- Novel Drug Delivery Systems Dept., Iran Polymer and Petrochemical Institute, P.O.Box 14965/115, Tehran, Iran
| |
Collapse
|
17
|
Soliga KJ, Bär SI, Oberhuber N, Zeng H, Schrey H, Schobert R. Synthesis and Bioactivity of Ancorinoside B, a Marine Diglycosyl Tetramic Acid. Mar Drugs 2021; 19:583. [PMID: 34677482 PMCID: PMC8541288 DOI: 10.3390/md19100583] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 11/17/2022] Open
Abstract
The sponge metabolite ancorinoside B was prepared for the first time in 16 steps and 4% yield. It features a β-d-galactopyranosyl-(1→4)-β-d-glucuronic acid tethered to a d-aspartic acid-derived tetramic acid. Key steps were the synthesis of a fully protected d-lactose derived thioglycoside, its attachment to a C20-aldehyde spacer, functionalization of the latter with a terminal N-(β-ketoacyl)-d-aspartate, and a basic Dieckmann cyclization to close the pyrrolidin-2,4-dione ring with concomitant global deprotection. Ancorinoside B exhibited multiple biological effects of medicinal interest. It inhibited the secretion of the cancer metastasis-relevant matrix metalloproteinases MMP-2 and MMP-9, and also the growth of Staphylococcus aureus biofilms by ca 87% when applied at concentrations as low as 0.5 µg/mL. This concentration is far below its MIC of ca 67 µg/mL and thus unlikely to induce bacterial resistance. It also led to a 67% dispersion of preformed S. aureus biofilms when applied at a concentration of ca 2 µg/mL. Ancorinoside B might thus be an interesting candidate for the control of the general hospital, catheter, or joint protheses infections.
Collapse
Affiliation(s)
- Kevin J. Soliga
- Department of Chemistry, University Bayreuth, Universitaetsstr. 30, D-95440 Bayreuth, Germany; (K.J.S.); (S.I.B.); (N.O.)
| | - Sofia I. Bär
- Department of Chemistry, University Bayreuth, Universitaetsstr. 30, D-95440 Bayreuth, Germany; (K.J.S.); (S.I.B.); (N.O.)
| | - Natalie Oberhuber
- Department of Chemistry, University Bayreuth, Universitaetsstr. 30, D-95440 Bayreuth, Germany; (K.J.S.); (S.I.B.); (N.O.)
| | - Haoxuan Zeng
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstrasse 7, 38124 Braunschweig, Germany; (H.Z.); (H.S.)
| | - Hedda Schrey
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstrasse 7, 38124 Braunschweig, Germany; (H.Z.); (H.S.)
| | - Rainer Schobert
- Department of Chemistry, University Bayreuth, Universitaetsstr. 30, D-95440 Bayreuth, Germany; (K.J.S.); (S.I.B.); (N.O.)
| |
Collapse
|
18
|
Klemmer VA, Khera N, Siegenthaler BM, Bhattacharya I, Weber FE, Ghayor C. Effect of N-Vinyl-2-Pyrrolidone (NVP), a Bromodomain-Binding Small Chemical, on Osteoblast and Osteoclast Differentiation and Its Potential Application for Bone Regeneration. Int J Mol Sci 2021; 22:ijms222011052. [PMID: 34681710 PMCID: PMC8541071 DOI: 10.3390/ijms222011052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/05/2021] [Accepted: 10/09/2021] [Indexed: 12/15/2022] Open
Abstract
The human skeleton is a dynamic and remarkably organized organ system that provides mechanical support and performs a variety of additional functions. Bone tissue undergoes constant remodeling; an essential process to adapt architecture/resistance to growth and mechanical needs, but also to repair fractures and micro-damages. Despite bone's ability to heal spontaneously, certain situations require an additional stimulation of bone regeneration, such as non-union fractures or after tumor resection. Among the growth factors used to increase bone regeneration, bone morphogenetic protein-2 (BMP2) is certainly the best described and studied. If clinically used in high quantities, BMP2 is associated with various adverse events, including fibrosis, overshooting bone formation, induction of inflammation and swelling. In previous studies, we have shown that it was possible to reduce BMP2 doses significantly, by increasing the response and sensitivity to it with small molecules called "BMP2 enhancers". In the present study, we investigated the effect of N-Vinyl-2-pyrrolidone (NVP) on osteoblast and osteoclast differentiation in vitro and guided bone regeneration in vivo. We showed that NVP increases BMP2-induced osteoblast differentiation and decreases RANKL-induced osteoclast differentiation in a dose-dependent manner. Moreover, in a rabbit calvarial defect model, the histomorphometric analysis revealed that bony bridging and bony regenerated area achieved with NVP-loaded poly (lactic-co-glycolic acid (PLGA) membranes were significantly higher compared to unloaded membranes. Taken together, our results suggest that NVP sensitizes BMP2-dependent pathways, enhances BMP2 effect, and inhibits osteoclast differentiation. Thus, NVP could prove useful as "osteopromotive substance" in situations where a high rate of bone regeneration is required, and in the management of bone diseases associated with excessive bone resorption, like osteoporosis.
Collapse
Affiliation(s)
- Viviane A. Klemmer
- Oral Biotechnology and Bioengineering, Center for Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (V.A.K.); (N.K.); (B.M.S.); (I.B.)
| | - Nupur Khera
- Oral Biotechnology and Bioengineering, Center for Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (V.A.K.); (N.K.); (B.M.S.); (I.B.)
| | - Barbara M. Siegenthaler
- Oral Biotechnology and Bioengineering, Center for Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (V.A.K.); (N.K.); (B.M.S.); (I.B.)
| | - Indranil Bhattacharya
- Oral Biotechnology and Bioengineering, Center for Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (V.A.K.); (N.K.); (B.M.S.); (I.B.)
| | - Franz E. Weber
- Oral Biotechnology and Bioengineering, Center for Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (V.A.K.); (N.K.); (B.M.S.); (I.B.)
- Center for Applied Biotechnology and Molecular Medicine, University of Zurich, 8057 Zurich, Switzerland
- Correspondence: (F.E.W.); (C.G.)
| | - Chafik Ghayor
- Oral Biotechnology and Bioengineering, Center for Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (V.A.K.); (N.K.); (B.M.S.); (I.B.)
- Correspondence: (F.E.W.); (C.G.)
| |
Collapse
|
19
|
Van Dycke J, Dai W, Stylianidou Z, Li J, Cuvry A, Roux E, Li B, Rymenants J, Bervoets L, de Witte P, Liu H, Neyts J, Rocha-Pereira J. A Novel Class of Norovirus Inhibitors Targeting the Viral Protease with Potent Antiviral Activity In Vitro and In Vivo. Viruses 2021; 13:v13091852. [PMID: 34578432 PMCID: PMC8472913 DOI: 10.3390/v13091852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/08/2021] [Accepted: 09/11/2021] [Indexed: 12/15/2022] Open
Abstract
Human noroviruses (HuNoVs) are the most common cause of viral gastroenteritis resulting annually in ~219,000 deaths and a societal cost of ~USD 60 billion, and no antivirals or vaccines are available. Here, we assess the anti-norovirus activity of new peptidomimetic aldehydes related to the protease inhibitor rupintrivir. The early hit compound 4 inhibited the replication of murine norovirus (MNV) and the HuNoV GI.1 replicon in vitro (EC50 ~1 µM) and swiftly cleared the HuNoV GI.1 replicon from the cells. Compound 4 still inhibits the proteolytic activity. We selected a resistant GI.1 replicon, with a mutation (I109V) in a highly conserved region of the viral protease, conferring a low yield of resistance against compound 4 and rupintrivir. After testing new derivatives, compound 10d was the most potent (EC50 nanomolar range). Molecular docking indicated that the aldehyde group of compounds 4 and 10d bind with Cys139 in the HuNoV 3CL protease by a covalent linkage. Finally, compound 10d inhibited the replication of HuNoV GII.4 in infected zebrafish larvae, and PK studies in mice showed an adequate profile.
Collapse
Affiliation(s)
- Jana Van Dycke
- Laboratory of Virology and Chemotherapy, KU Leuven–Department of Microbiology, Immunology and Transplantation, Rega Institute, 3000 Leuven, Belgium; (J.V.D.); (Z.S.); (A.C.); (E.R.); (J.R.); (L.B.); (J.N.)
| | - Wenhao Dai
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China; (W.D.); (J.L.); (B.L.)
| | - Zoe Stylianidou
- Laboratory of Virology and Chemotherapy, KU Leuven–Department of Microbiology, Immunology and Transplantation, Rega Institute, 3000 Leuven, Belgium; (J.V.D.); (Z.S.); (A.C.); (E.R.); (J.R.); (L.B.); (J.N.)
| | - Jian Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China; (W.D.); (J.L.); (B.L.)
- College of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Arno Cuvry
- Laboratory of Virology and Chemotherapy, KU Leuven–Department of Microbiology, Immunology and Transplantation, Rega Institute, 3000 Leuven, Belgium; (J.V.D.); (Z.S.); (A.C.); (E.R.); (J.R.); (L.B.); (J.N.)
| | - Emma Roux
- Laboratory of Virology and Chemotherapy, KU Leuven–Department of Microbiology, Immunology and Transplantation, Rega Institute, 3000 Leuven, Belgium; (J.V.D.); (Z.S.); (A.C.); (E.R.); (J.R.); (L.B.); (J.N.)
| | - Bingqian Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China; (W.D.); (J.L.); (B.L.)
| | - Jasper Rymenants
- Laboratory of Virology and Chemotherapy, KU Leuven–Department of Microbiology, Immunology and Transplantation, Rega Institute, 3000 Leuven, Belgium; (J.V.D.); (Z.S.); (A.C.); (E.R.); (J.R.); (L.B.); (J.N.)
| | - Lindsey Bervoets
- Laboratory of Virology and Chemotherapy, KU Leuven–Department of Microbiology, Immunology and Transplantation, Rega Institute, 3000 Leuven, Belgium; (J.V.D.); (Z.S.); (A.C.); (E.R.); (J.R.); (L.B.); (J.N.)
| | - Peter de Witte
- Laboratory for Molecular Biodiscovery, KU Leuven–Department of Pharmaceutical and Pharmacological Sciences, 3000 Leuven, Belgium;
| | - Hong Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China; (W.D.); (J.L.); (B.L.)
- Correspondence: (H.L.); (J.R.-P.)
| | - Johan Neyts
- Laboratory of Virology and Chemotherapy, KU Leuven–Department of Microbiology, Immunology and Transplantation, Rega Institute, 3000 Leuven, Belgium; (J.V.D.); (Z.S.); (A.C.); (E.R.); (J.R.); (L.B.); (J.N.)
| | - Joana Rocha-Pereira
- Laboratory of Virology and Chemotherapy, KU Leuven–Department of Microbiology, Immunology and Transplantation, Rega Institute, 3000 Leuven, Belgium; (J.V.D.); (Z.S.); (A.C.); (E.R.); (J.R.); (L.B.); (J.N.)
- Correspondence: (H.L.); (J.R.-P.)
| |
Collapse
|
20
|
Tsai CH, Chen CJ, Gong CL, Liu SC, Chen PC, Huang CC, Hu SL, Wang SW, Tang CH. CXCL13/CXCR5 axis facilitates endothelial progenitor cell homing and angiogenesis during rheumatoid arthritis progression. Cell Death Dis 2021; 12:846. [PMID: 34518512 PMCID: PMC8437941 DOI: 10.1038/s41419-021-04136-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 07/29/2021] [Accepted: 08/18/2021] [Indexed: 12/27/2022]
Abstract
Angiogenesis is a critical process in the formation of new capillaries and a key participant in rheumatoid arthritis (RA) pathogenesis. The chemokine (C-X-C motif) ligand 13 (CXCL13) plays important roles in several cellular functions such as infiltration, migration, and motility. We report significantly higher levels of CXCL13 expression in collagen-induced arthritis (CIA) mice compared with controls and also in synovial fluid from RA patients compared with human osteoarthritis (OA) samples. RA synovial fluid increased endothelial progenitor cell (EPC) homing and angiogenesis, which was blocked by the CXCL13 antibody. By interacting with the CXCR5 receptor, CXCL13 facilitated vascular endothelial growth factor (VEGF) expression and angiogenesis in EPC through the PLC, MEK, and AP-1 signaling pathways. Importantly, infection with CXCL13 short hairpin RNA (shRNA) mitigated EPC homing and angiogenesis, articular swelling, and cartilage erosion in ankle joints of mice with CIA. CXCL13 is therefore a novel therapeutic target for RA.
Collapse
Affiliation(s)
- Chun-Hao Tsai
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Chao-Ju Chen
- School of Medicine, China Medical University, Taichung, Taiwan
| | - Chi-Li Gong
- School of Medicine, China Medical University, Taichung, Taiwan
| | - Shan-Chi Liu
- Department of Medical Education and Research, China Medical University Beigang Hospital, Yunlin, Taiwan
| | - Po-Chun Chen
- Translational Medicine Center, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Chien-Chung Huang
- School of Medicine, China Medical University, Taichung, Taiwan
- Division of Immunology and Rheumatology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Sung-Lin Hu
- School of Medicine, China Medical University, Taichung, Taiwan
- Department of Family Medicine, China Medical University Hsinchu Hospital, Hsinchu, Taiwan
| | - Shih-Wei Wang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Institute of Biomedical Sciences, Mackay Medical College, Taipei, Taiwan
| | - Chih-Hsin Tang
- School of Medicine, China Medical University, Taichung, Taiwan.
- Chinese Medicine Research Center, China Medical University, Taichung, Taiwan.
- Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan.
| |
Collapse
|
21
|
van Geffen C, Deißler A, Beer-Hammer S, Nürnberg B, Handgretinger R, Renz H, Hartl D, Kolahian S. Myeloid-Derived Suppressor Cells Dampen Airway Inflammation Through Prostaglandin E2 Receptor 4. Front Immunol 2021; 12:695933. [PMID: 34322123 PMCID: PMC8311661 DOI: 10.3389/fimmu.2021.695933] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/24/2021] [Indexed: 01/22/2023] Open
Abstract
Emerging evidence suggests a mechanistic role for myeloid-derived suppressor cells (MDSCs) in lung diseases like asthma. Previously, we showed that adoptive transfer of MDSCs dampens lung inflammation in murine models of asthma through cyclooxygenase-2 and arginase-1 pathways. Here, we further dissected this mechanism by studying the role and therapeutic relevance of the downstream mediator prostaglandin E2 receptor 4 (EP4) in a murine model of asthma. We adoptively transferred MDSCs generated using an EP4 agonist in a murine model of asthma and studied the consequences on airway inflammation. Furthermore, pegylated human arginase-1 was used to model MDSC effector activities. We demonstrate that the selective EP4 agonist L-902,688 increased the number and suppressive activity of MDSCs through arginase-1 and nitric oxide synthase-2. These results showed that adoptive transfer of EP4-primed MDSCs, EP4 agonism alone or arginase-1 administration ameliorated lung inflammatory responses and histopathological changes in asthmatic mice. Collectively, our results provide evidence that MDSCs dampen airway inflammation in murine asthma through a mechanism involving EP4.
Collapse
MESH Headings
- Adoptive Transfer
- Animals
- Antigens, Dermatophagoides/immunology
- Arginase/metabolism
- Arginase/pharmacology
- Arthropod Proteins/immunology
- Asthma/immunology
- Asthma/metabolism
- Asthma/therapy
- Cells, Cultured
- Cytokines/metabolism
- Dinoprostone/pharmacology
- Disease Models, Animal
- Female
- Lung/drug effects
- Lung/immunology
- Lung/metabolism
- Mice, Inbred BALB C
- Myeloid-Derived Suppressor Cells/drug effects
- Myeloid-Derived Suppressor Cells/immunology
- Myeloid-Derived Suppressor Cells/metabolism
- Myeloid-Derived Suppressor Cells/transplantation
- Nitric Oxide Synthase Type II/metabolism
- Pneumonia/immunology
- Pneumonia/metabolism
- Pneumonia/therapy
- Pyroglyphidae/immunology
- Pyrrolidinones/pharmacology
- Receptors, Prostaglandin E, EP2 Subtype/agonists
- Receptors, Prostaglandin E, EP2 Subtype/metabolism
- Receptors, Prostaglandin E, EP4 Subtype/agonists
- Receptors, Prostaglandin E, EP4 Subtype/metabolism
- Signal Transduction
- Tetrazoles/pharmacology
- Mice
Collapse
Affiliation(s)
- Chiel van Geffen
- Department of Experimental and Clinical Pharmacology and Pharmacogenomics, University Hospital Tübingen, Tübingen, Germany
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University of Marburg, Marburg, Germany
- Universities of Giessen and Marburg Lung Center, German Center for Lung Research (DZL), Marburg, Germany
| | - Astrid Deißler
- Department of Experimental and Clinical Pharmacology and Pharmacogenomics, University Hospital Tübingen, Tübingen, Germany
| | - Sandra Beer-Hammer
- Department of Pharmacology, Experimental Therapy & Toxicology and Interfaculty Center of Pharmacogenomics & Drug Research (IZePhA), University Hospitals and Clinics, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Bernd Nürnberg
- Department of Pharmacology, Experimental Therapy & Toxicology and Interfaculty Center of Pharmacogenomics & Drug Research (IZePhA), University Hospitals and Clinics, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Rupert Handgretinger
- Children’s University Hospital, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Harald Renz
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University of Marburg, Marburg, Germany
- Universities of Giessen and Marburg Lung Center, German Center for Lung Research (DZL), Marburg, Germany
| | - Dominik Hartl
- Department of Pediatrics I, Eberhard Karls University of Tübingen, Tübingen, Germany
- Translational Medicine, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Saeed Kolahian
- Department of Experimental and Clinical Pharmacology and Pharmacogenomics, University Hospital Tübingen, Tübingen, Germany
- Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, Philipps University of Marburg, Marburg, Germany
- Universities of Giessen and Marburg Lung Center, German Center for Lung Research (DZL), Marburg, Germany
| |
Collapse
|
22
|
Abstract
The concept of 'impulse control' has its roots in early psychiatry and today has progressed into a well-described, although poorly understood, multidimensional endophenotype underlying many neuropsychiatric disorders (e.g., attention deficit hyperactivity disorder, schizophrenia, substance use disorders). There is mounting evidence suggesting that the cognitive and/or behavioral dimensions underlying impulsivity are driven by dysfunctional glutamate (Glu) neurotransmission via targeted ionotropic Glu receptor (GluR) [e.g., N-methyl-D-aspartate receptor (NMDAR), α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR)] mechanisms and associated synaptic alterations within key brain nodes. Ketamine, a noncompetitive NMDAR antagonist and FDA-approved for treatment-resistant depression, induces a 'glutamate burst' that drives resculpting of the synaptic milieu, which lasts for several days to a week. Thus, we hypothesized that single and repeated treatment with a subanesthetic ketamine dose would normalize motor impulsivity. Next, we hypothesized that AMPAR positive allosteric modulation, alone or in combination with ketamine, would attenuate impulsivity and provide insight into the mechanisms underlying GluR dysfunction relevant to motor impulsivity. To measure motor impulsivity, outbred male Sprague-Dawley rats were trained on the one-choice serial reaction time task. Rats pretreated with single or repeated (3 days) administration of ketamine (10 mg/kg; i.p.; 24-h pretreatment) or with the AMPAkine HJC0122 (1 or 10 mg/kg; i.p.; 30-min pretreatment) exhibited lower levels of motor impulsivity vs. control. Combination of single or repeated ketamine plus HJC0122 also attenuated motor impulsivity vs. control. We conclude that ligands designed to promote GluR signaling represent an effective pharmacological approach to normalize impulsivity and subsequently, neuropsychiatric disorders marked by aberrant impulse control.
Collapse
Affiliation(s)
- Brionna D Davis-Reyes
- Center for Addiction Research and Department of Pharmacology and Toxicology, University of Texas Medical Branch, Galveston, Texas, USA
| | | | | | | | | | | |
Collapse
|
23
|
Primahana G, Narmani A, Surup F, Teponno RB, Arzanlou M, Stadler M. Five Tetramic Acid Derivatives Isolated from the Iranian Fungus Colpoma quercinum CCTU A372. Biomolecules 2021; 11:biom11060783. [PMID: 34067463 PMCID: PMC8224775 DOI: 10.3390/biom11060783] [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] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 01/31/2023] Open
Abstract
Submerged mycelial cultures of the ascomycete Colpoma quercinum CCTU A372 were found to produce five previously undescribed tetramic acids, for which we propose the trivial names colposetins A-C (1-3) and colpomenoic acids A and B (4 and 5), along with the known compounds penicillide (6) and monodictyphenone (7). The planar structures of 1-5 were determined by high-resolution electrospray ionization mass spectrometry (HR-ESIMS) and extensive 1D and 2D nuclear magnetic resonance (NMR) spectroscopy. Their absolute configurations were determined by the combination of electronic circular dischroism (ECD) analysis, J-based configurational analysis, and a rotating-frame Overhauser effect spectroscopy (ROESY) experiment. Colposetin B displayed weak antimicrobial activity against Bacillus subtilis and Mucor hiemalis (MIC 67 µg/mL).
Collapse
Affiliation(s)
- Gian Primahana
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany; (G.P.); (A.N.); (F.S.); (R.B.T.)
- Research Center for Chemistry, Indonesian Institute of Sciences (LIPI), Kawasan Puspiptek, Serpong, 15314 Tangerang Selatan, Indonesia
| | - Abolfazl Narmani
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany; (G.P.); (A.N.); (F.S.); (R.B.T.)
- Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz 51666, Iran;
| | - Frank Surup
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany; (G.P.); (A.N.); (F.S.); (R.B.T.)
| | - Rémy Bertrand Teponno
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany; (G.P.); (A.N.); (F.S.); (R.B.T.)
- Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Mahdi Arzanlou
- Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz 51666, Iran;
| | - Marc Stadler
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany; (G.P.); (A.N.); (F.S.); (R.B.T.)
- Correspondence:
| |
Collapse
|
24
|
Ni Z, Sun W, Li R, Yang M, Zhang F, Chang X, Li W, Zhou Z. Fluorochloridone induces autophagy in TM4 Sertoli cells: involvement of ROS-mediated AKT-mTOR signaling pathway. Reprod Biol Endocrinol 2021; 19:64. [PMID: 33902598 PMCID: PMC8073911 DOI: 10.1186/s12958-021-00739-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 04/06/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Fluorochloridone (FLC), a selective pyrrolidone herbicide, has been recognized as a potential endocrine disruptor and reported to induce male reproductive toxicity, but the underlying mechanism is unclear. The aim of this study was to investigate the mechanism of FLC-induced reproductive toxicity on male mice with particular emphasis on the role of autophagy in mice' TM4 Sertoli cells. METHODS Adult C57BL/6 mice were divided into one control group (0.5% sodium carboxymethyl cellulose), and four FLC-treated groups (3,15,75,375 mg/kg). The animals (ten mice per group) received gavage for 28 days. After treatment, histological analysis, sperm parameters, the microstructure of autophagy and the expression of autophagy-associated proteins in testis were evaluated. Furthermore, to explore the autophagy mechanism, TM4 Sertoli cells were treated with FLC (0,40,80,160 μM) in vitro for 24 h. Cell activity and cytoskeletal changes were measured by MTT assay and F-actin immunofluorescence staining. The formation of autophagosome, accumulation of reactive oxygen species (ROS), expression of autophagy marker proteins (LC3, Beclin-1 and P62) and AKT-related pathway proteins (AKT, mTOR) were observed. The ROS scavenger N-acetylcysteine (NAC) and AKT agonist (SC79) were used to treat TM4 cells to observe the changes of AKT-mTOR pathway and autophagy. RESULTS In vivo, it showed that FLC exposure caused testicular injuries, abnormality in epididymal sperm. Moreover, FLC increased the formation of autophagosomes, the accumulation of LC3II/LC3I, Beclin-1 and P62 protein, which is related to the degradation of autophagy. In vitro, FLC triggered TM4 cell autophagy by increasing the formation of autophagosomes and upregulating of LC3II/LC3I, Beclin-1 and P62 levels. In addition, FLC induced ROS production and inhibited the activities of AKT and mTOR kinases. The Inhibition of AKT/mTOR signaling pathways and the activation of autophagy induced by FLC could be efficiently reversed by pretreatment of NAC. Additionally, decreased autophagy and increased cell viability were observed in TM4 cells treated with SC79 and FLC, compared with FLC alone, indicating that FLC-induced autophagy may be pro-death. CONCLUSION Taken together, our study provided the evidence that FLC promoted autophagy in TM4 Sertoli cells and that this process may involve ROS-mediated AKT/mTOR signaling pathways.
Collapse
Affiliation(s)
- Zhijing Ni
- School of Public Health/MOE Key Laboratory for Public Health Safety/NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, 200032, China
| | - Weiqi Sun
- School of Public Health/MOE Key Laboratory for Public Health Safety/NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, 200032, China
| | - Rui Li
- Shanghai Institute for Food and Drug Control, Shanghai, 201203, China
| | - Mingjun Yang
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai, 200032, China
| | - Fen Zhang
- School of Public Health/MOE Key Laboratory for Public Health Safety/NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, 200032, China
| | - Xiuli Chang
- School of Public Health/MOE Key Laboratory for Public Health Safety/NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, 200032, China
| | - Weihua Li
- NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai, 200032, China
| | - Zhijun Zhou
- School of Public Health/MOE Key Laboratory for Public Health Safety/NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, 200032, China.
| |
Collapse
|
25
|
Xie T, Zhang Z, Cui Y, Shu Y, Liu Y, Zou J, Wang M, Wang Y, Yang Q, Pan X, Cai J, Sun X, Yao Y, Wang X. Prostaglandin E 2 promotes pathological retinal neovascularisation via EP 4R-EGFR-Gab1-AKT signaling pathway. Exp Eye Res 2021; 205:108507. [PMID: 33609510 DOI: 10.1016/j.exer.2021.108507] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 01/25/2021] [Accepted: 02/12/2021] [Indexed: 12/12/2022]
Abstract
Proliferative retinopathies, such as proliferative diabetic retinopathy (PDR) and retinopathy of prematurity (ROP) are major causes of visual impairment and blindness in industrialized countries. Prostaglandin E2 (PGE2) is implicated in cellular proliferation and migration via E-prostanoid receptor (EP4R). The aim of this study was to investigate the role of PGE2/EP4R signaling in the promotion of retinal neovascularisation. In a streptozotocin (STZ)-induced diabetic model and an oxygen-induced retinopathy (OIR) model, rats received an intravitreal injection of PGE2, cay10598 (an EP4R agonist) or AH23848 (an EP4R antagonist). Optical coherence tomography, retinal histology and biochemical markers were assessed. Treatment with PGE2 or cay10598 accelerated pathological retinal angiogenesis in STZ and OIR-induced rat retina, which was ameliorated in rats pretreated with AH23848. Serum VEGF-A was upregulated in the PGE2-treated diabetic rats vs non-treated diabetic rats and significantly downregulated in AH23848-treated diabetic rats. PGE2 or cay10598 treatment also significantly accelerated endothelial tip-cell formation in new-born rat retina. In addition, AH23848 treatment attenuated PGE2-or cay10598-induced proliferation and migration by repressing the EGF receptor (EGFR)/Growth factor receptor bound protein 2-associated binder protein 1 (Gab1)/Akt/NF-κB/VEGF-A signaling network in human retinal microvascular endothelial cells (hRMECs). PGE2/EP4R signaling network is thus a potential therapeutic target for pathological intraocular angiogenesis.
Collapse
MESH Headings
- Animals
- Animals, Newborn
- Biphenyl Compounds/pharmacology
- Blotting, Western
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Diabetes Mellitus, Experimental
- Dinoprostone/physiology
- Disease Models, Animal
- Electrophoretic Mobility Shift Assay
- Endothelium, Vascular/metabolism
- ErbB Receptors/metabolism
- Intravitreal Injections
- Male
- NF-kappa B/metabolism
- Oxygen/toxicity
- Phosphoproteins/metabolism
- Phosphorylation
- Proto-Oncogene Proteins c-akt/metabolism
- Pyrrolidinones/pharmacology
- Rats, Sprague-Dawley
- Receptors, Prostaglandin E, EP4 Subtype/agonists
- Receptors, Prostaglandin E, EP4 Subtype/antagonists & inhibitors
- Receptors, Prostaglandin E, EP4 Subtype/metabolism
- Retinal Neovascularization/metabolism
- Retinal Neovascularization/physiopathology
- Retinal Vessels/metabolism
- Signal Transduction/physiology
- Tetrazoles/pharmacology
- Vascular Endothelial Growth Factor A/metabolism
- Rats
Collapse
Affiliation(s)
- Tianhua Xie
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China; Center of Clinical Research, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China; Department of Ophthalmology, Shanghai General Hospital of Nanjing Medical University, Shanghai, 200080, PR China
| | - Zhonghong Zhang
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China; Department of Ophthalmology, Zhongda Hospital Southeast University, 87 Dingjiaqiao, Nanjing, Jiangsu, 210009, PR China
| | - Yuqing Cui
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China
| | - Yishun Shu
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China
| | - Yanqiu Liu
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China
| | - Jian Zou
- Center of Clinical Research, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China
| | - Man Wang
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China
| | - Yangningzhi Wang
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China
| | - Qian Yang
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China; Center of Clinical Research, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China
| | - Xubin Pan
- Department of Ophthalmology, Affiliated Hospital of Jiangnan University, 200 Huihe Road, Wuxi, Jiangsu, 214062, PR China
| | - Jiping Cai
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China
| | - Xiaodong Sun
- Department of Ophthalmology, Shanghai General Hospital of Nanjing Medical University, Shanghai, 200080, PR China
| | - Yong Yao
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China.
| | - Xiaolu Wang
- Department of Ophthalmology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China; Center of Clinical Research, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, PR China.
| |
Collapse
|
26
|
Yan L, Banuelos CA, Mawji NR, Patrick BO, Sadar MD, Andersen RJ. Structure-Activity Relationships for the Marine Natural Product Sintokamides: Androgen Receptor N-Terminus Antagonists of Interest for Treatment of Metastatic Castration-Resistant Prostate Cancer. J Nat Prod 2021; 84:797-813. [PMID: 33124806 PMCID: PMC8802828 DOI: 10.1021/acs.jnatprod.0c00921] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Synthetic analogues of the marine natural product sintokamides have been prepared in order to investigate the structure-activity relationships for the androgen receptor N-terminal domain (AR NTD) antagonist activity of the sintokamide scaffold. An in vitro LNCaP cell-based transcriptional activity assay with an androgen-driven luciferase (Luc) reporter was used to monitor the potency of analogues. The data have shown that the chlorine atoms on the leucine side chains are essential for potent activity. Analogues missing the nonchlorinated methyl groups of the leucine side chains (C-1 and C-17) are just as active and in some cases more active than the natural products. Analogues with the natural R configuration at C-10 and the unnatural R configuration at C-4 are most potent. Replacing the natural propionamide N-terminus cap with the more sterically hindered pivaloylamide N-terminus cap leads to enhanced potency. The tetramic acid fragment and the methyl ether on the tetramic acid fragment are essential for activity. The SAR optimized analogue 76 is more selective, easier to synthesize, more potent, and presumed to be more resistant to proteolysis than the natural sintokamides.
Collapse
Affiliation(s)
- Luping Yan
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
- Department of Earth, Ocean & Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Carmen A. Banuelos
- Genome Sciences Centre, BC Cancer, Vancouver, British Columbia, Canada V5Z 1L3 and Departments of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z7
| | - Nasrin R. Mawji
- Genome Sciences Centre, BC Cancer, Vancouver, British Columbia, Canada V5Z 1L3 and Departments of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z7
| | - Brian O. Patrick
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Marianne D. Sadar
- Genome Sciences Centre, BC Cancer, Vancouver, British Columbia, Canada V5Z 1L3 and Departments of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z7
| | - Raymond J. Andersen
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
- Department of Earth, Ocean & Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| |
Collapse
|
27
|
Baig MH, Sharma T, Ahmad I, Abohashrh M, Alam MM, Dong JJ. Is PF-00835231 a Pan-SARS-CoV-2 Mpro Inhibitor? A Comparative Study. Molecules 2021; 26:1678. [PMID: 33802860 PMCID: PMC8002701 DOI: 10.3390/molecules26061678] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 02/03/2021] [Revised: 03/04/2021] [Accepted: 03/04/2021] [Indexed: 12/29/2022] Open
Abstract
The COVID-19 outbreak continues to spread worldwide at a rapid rate. Currently, the absence of any effective antiviral treatment is the major concern for the global population. The reports of the occurrence of various point mutations within the important therapeutic target protein of SARS-CoV-2 has elevated the problem. The SARS-CoV-2 main protease (Mpro) is a major therapeutic target for new antiviral designs. In this study, the efficacy of PF-00835231 was investigated (a Mpro inhibitor under clinical trials) against the Mpro and their reported mutants. Various in silico approaches were used to investigate and compare the efficacy of PF-00835231 and five drugs previously documented to inhibit the Mpro. Our study shows that PF-00835231 is not only effective against the wild type but demonstrates a high affinity against the studied mutants as well.
Collapse
Affiliation(s)
- Mohammad Hassan Baig
- Department of Family Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea; (M.H.B.); (T.S.)
| | - Tanuj Sharma
- Department of Family Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea; (M.H.B.); (T.S.)
| | - Irfan Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia;
| | - Mohammed Abohashrh
- Department of Basic Medical Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia; (M.A.); (M.M.A.)
| | - Mohammad Mahtab Alam
- Department of Basic Medical Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia; (M.A.); (M.M.A.)
| | - Jae-June Dong
- Department of Family Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea; (M.H.B.); (T.S.)
| |
Collapse
|
28
|
Cottone E, Pomatto V, Rapelli S, Scandiffio R, Mackie K, Bovolin P. Cannabinoid Receptor Modulation of Neurogenesis: ST14A Striatal Neural Progenitor Cells as a Simplified In Vitro Model. Molecules 2021; 26:molecules26051448. [PMID: 33800024 PMCID: PMC7962126 DOI: 10.3390/molecules26051448] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/27/2021] [Accepted: 03/04/2021] [Indexed: 12/31/2022] Open
Abstract
The endocannabinoid system (ECS) is involved in the modulation of several basic biological processes, having widespread roles in neurodevelopment, neuromodulation, immune response, energy homeostasis and reproduction. In the adult central nervous system (CNS) the ECS mainly modulates neurotransmitter release, however, a substantial body of evidence has revealed a central role in regulating neurogenesis in developing and adult CNS, also under pathological conditions. Due to the complexity of investigating ECS functions in neural progenitors in vivo, we tested the suitability of the ST14A striatal neural progenitor cell line as a simplified in vitro model to dissect the role and the mechanisms of ECS-regulated neurogenesis, as well as to perform ECS-targeted pharmacological approaches. We report that ST14A cells express various ECS components, supporting the presence of an active ECS. While CB1 and CB2 receptor blockade did not affect ST14A cell number, exogenous administration of the endocannabinoid 2-AG and the synthetic CB2 agonist JWH133 increased ST14A cell proliferation. Phospholipase C (PLC), but not PI3K pharmacological blockade negatively modulated CB2-induced ST14A cell proliferation, suggesting that a PLC pathway is involved in the steps downstream to CB2 activation. On the basis of our results, we propose ST14A neural progenitor cells as a useful in vitro model for studying ECS modulation of neurogenesis, also in prospective in vivo pharmacological studies.
Collapse
MESH Headings
- Animals
- Cannabinoid Receptor Modulators/pharmacology
- Cannabinoids/pharmacology
- Cell Line
- Cell Proliferation/drug effects
- Corpus Striatum/cytology
- Estrenes/pharmacology
- Neural Stem Cells/drug effects
- Neural Stem Cells/physiology
- Neurogenesis/drug effects
- Neurogenesis/physiology
- Pyrrolidinones/pharmacology
- Rats
- Receptor, Cannabinoid, CB1/agonists
- Receptor, Cannabinoid, CB1/antagonists & inhibitors
- Receptor, Cannabinoid, CB1/genetics
- Receptor, Cannabinoid, CB2/agonists
- Receptor, Cannabinoid, CB2/antagonists & inhibitors
- Receptor, Cannabinoid, CB2/genetics
- Receptors, Cannabinoid/genetics
- Receptors, Cannabinoid/metabolism
- Type C Phospholipases/antagonists & inhibitors
Collapse
Affiliation(s)
- Erika Cottone
- Department of Life Sciences and Systems Biology, University of Turin, 10123 Torino, Italy; (E.C.); (V.P.); (S.R.); (R.S.)
| | - Valentina Pomatto
- Department of Life Sciences and Systems Biology, University of Turin, 10123 Torino, Italy; (E.C.); (V.P.); (S.R.); (R.S.)
| | - Stefania Rapelli
- Department of Life Sciences and Systems Biology, University of Turin, 10123 Torino, Italy; (E.C.); (V.P.); (S.R.); (R.S.)
| | - Rosaria Scandiffio
- Department of Life Sciences and Systems Biology, University of Turin, 10123 Torino, Italy; (E.C.); (V.P.); (S.R.); (R.S.)
| | - Ken Mackie
- Department of Psychological and Brain Sciences, Gill Center for Biomolecular Science, Indiana University, Bloomington, IN 47405, USA;
| | - Patrizia Bovolin
- Department of Life Sciences and Systems Biology, University of Turin, 10123 Torino, Italy; (E.C.); (V.P.); (S.R.); (R.S.)
- Correspondence: ; Tel.: +39-011-6704679
| |
Collapse
|
29
|
Gudasheva TA, Tallerova AV, Mezhlumyan AG, Antipova TA, Logvinov IO, Firsova YN, Povarnina PY, Seredenin SB. Low-Molecular Weight BDNF Mimetic, Dimeric Dipeptide GSB-106, Reverses Depressive Symptoms in Mouse Chronic Social Defeat Stress. Biomolecules 2021; 11:biom11020252. [PMID: 33578683 PMCID: PMC7916338 DOI: 10.3390/biom11020252] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 12/12/2022] Open
Abstract
A mimetic of the BDNF loop 4, bis (N-monosuccinyl-L-seryl-L-lysine) hexamethylenediamide, named GSB-106, was designed and synthesized in our scientific group. The compound activated TrkB, MAPK/ERK, PI3K/AKT, and PLCγ in in vitro experiments. In vivo experiments with rodents revealed its antidepressant-like activity in the forced swim and the tail suspension tests at the dose range of 0.1–5.0 mg/kg (i.p., p.o.). However, GSB-106 was not studied in depression models modulating major depression in humans. In the present study, the GSB-106 antidepressant-like activity was revealed in mice at the depression model induced by 28-day social defeat stress with 21-days oral administration (0.1 mg/kg) after stress. At the same time, GSB-106 restored reduced locomotor activity and completely eliminated the anhedonia manifestations. The compound also restored reduced levels of synaptophysin and CREB in the hippocampus. In addition, the Trk receptor antagonist K252A, and the PLC inhibitor U73122, were found to completely block the antidepressant-like activity of GSB-106 in the forced swimming test in mice. Thus, the present results demonstrate the dipeptide BDNF mimetic GSB-106 reversed depressive-like behavior and restored hippocampal neuroplasticity in a rodent depression model. These effects of GSB-106 are probably regulated by TrkB signaling.
Collapse
Affiliation(s)
- Tatiana A. Gudasheva
- Department of Medicinal Chemistry, V.V. Zakusov Research Institute of Pharmacology, Baltijskaya 8, 125315 Moscow, Russia; (A.V.T.); (A.G.M.); (Y.N.F.); (P.Y.P.)
- Correspondence:
| | - Anna V. Tallerova
- Department of Medicinal Chemistry, V.V. Zakusov Research Institute of Pharmacology, Baltijskaya 8, 125315 Moscow, Russia; (A.V.T.); (A.G.M.); (Y.N.F.); (P.Y.P.)
| | - Armen G. Mezhlumyan
- Department of Medicinal Chemistry, V.V. Zakusov Research Institute of Pharmacology, Baltijskaya 8, 125315 Moscow, Russia; (A.V.T.); (A.G.M.); (Y.N.F.); (P.Y.P.)
| | - Tatyana A. Antipova
- Department of Pharmacogenetics, V.V. Zakusov Research Institute of Pharmacology, Baltijskaya 8, 125315 Moscow, Russia; (T.A.A.); (I.O.L.); (S.B.S.)
| | - Ilya O. Logvinov
- Department of Pharmacogenetics, V.V. Zakusov Research Institute of Pharmacology, Baltijskaya 8, 125315 Moscow, Russia; (T.A.A.); (I.O.L.); (S.B.S.)
| | - Yulia N. Firsova
- Department of Medicinal Chemistry, V.V. Zakusov Research Institute of Pharmacology, Baltijskaya 8, 125315 Moscow, Russia; (A.V.T.); (A.G.M.); (Y.N.F.); (P.Y.P.)
| | - Polina Y. Povarnina
- Department of Medicinal Chemistry, V.V. Zakusov Research Institute of Pharmacology, Baltijskaya 8, 125315 Moscow, Russia; (A.V.T.); (A.G.M.); (Y.N.F.); (P.Y.P.)
| | - Sergey B. Seredenin
- Department of Pharmacogenetics, V.V. Zakusov Research Institute of Pharmacology, Baltijskaya 8, 125315 Moscow, Russia; (T.A.A.); (I.O.L.); (S.B.S.)
| |
Collapse
|
30
|
Hasumi K, Suzuki E. Impact of SMTP Targeting Plasminogen and Soluble Epoxide Hydrolase on Thrombolysis, Inflammation, and Ischemic Stroke. Int J Mol Sci 2021; 22:954. [PMID: 33477998 PMCID: PMC7835936 DOI: 10.3390/ijms22020954] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 12/17/2020] [Revised: 01/10/2021] [Accepted: 01/12/2021] [Indexed: 12/11/2022] Open
Abstract
Stachybotrys microspora triprenyl phenol (SMTP) is a large family of small molecules derived from the fungus S. microspora. SMTP acts as a zymogen modulator (specifically, plasminogen modulator) that alters plasminogen conformation to enhance its binding to fibrin and subsequent fibrinolysis. Certain SMTP congeners exert anti-inflammatory effects by targeting soluble epoxide hydrolase. SMTP congeners with both plasminogen modulation activity and anti-inflammatory activity ameliorate various aspects of ischemic stroke in rodents and primates. A remarkable feature of SMTP efficacy is the suppression of hemorrhagic transformation, which is exacerbated by conventional thrombolytic treatments. No drug with such properties has been developed yet, and SMTP would be the first to promote thrombolysis but suppress disease-associated bleeding. On the basis of these findings, one SMTP congener is under clinical study and development. This review summarizes the discovery, mechanism of action, pharmacological activities, and development of SMTP.
Collapse
Affiliation(s)
- Keiji Hasumi
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan;
- Division of Research and Development, TMS Co., Ltd., Tokyo 183-0023, Japan
| | - Eriko Suzuki
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan;
| |
Collapse
|
31
|
Trujillo CA, Adams JW, Negraes PD, Carromeu C, Tejwani L, Acab A, Tsuda B, Thomas CA, Sodhi N, Fichter KM, Romero S, Zanella F, Sejnowski TJ, Ulrich H, Muotri AR. Pharmacological reversal of synaptic and network pathology in human MECP2-KO neurons and cortical organoids. EMBO Mol Med 2021; 13:e12523. [PMID: 33501759 PMCID: PMC7799367 DOI: 10.15252/emmm.202012523] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 04/14/2020] [Revised: 10/26/2020] [Accepted: 10/28/2020] [Indexed: 12/19/2022] Open
Abstract
Duplication or deficiency of the X-linked MECP2 gene reliably produces profound neurodevelopmental impairment. MECP2 mutations are almost universally responsible for Rett syndrome (RTT), and particular mutations and cellular mosaicism of MECP2 may underlie the spectrum of RTT symptomatic severity. No clinically approved treatments for RTT are currently available, but human pluripotent stem cell technology offers a platform to identify neuropathology and test candidate therapeutics. Using a strategic series of increasingly complex human stem cell-derived technologies, including human neurons, MECP2-mosaic neurospheres to model RTT female brain mosaicism, and cortical organoids, we identified synaptic dysregulation downstream from knockout of MECP2 and screened select pharmacological compounds for their ability to treat this dysfunction. Two lead compounds, Nefiracetam and PHA 543613, specifically reversed MECP2-knockout cytologic neuropathology. The capacity of these compounds to reverse neuropathologic phenotypes and networks in human models supports clinical studies for neurodevelopmental disorders in which MeCP2 deficiency is the predominant etiology.
Collapse
Affiliation(s)
- Cleber A Trujillo
- Department of Pediatrics/Rady Children's HospitalDepartment of Cellular & Molecular MedicineSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
| | - Jason W Adams
- Department of Pediatrics/Rady Children's HospitalDepartment of Cellular & Molecular MedicineSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
- Department of NeurosciencesSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
- Center for Academic Research and Training in AnthropogenyUniversity of California San DiegoLa JollaCAUSA
| | - Priscilla D Negraes
- Department of Pediatrics/Rady Children's HospitalDepartment of Cellular & Molecular MedicineSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
- StemoniX IncMaple GroveMNUSA
| | - Cassiano Carromeu
- Department of Pediatrics/Rady Children's HospitalDepartment of Cellular & Molecular MedicineSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
- StemoniX IncMaple GroveMNUSA
| | - Leon Tejwani
- Department of Pediatrics/Rady Children's HospitalDepartment of Cellular & Molecular MedicineSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
- Present address:
Interdepartmental Neuroscience ProgramYale School of MedicineNew HavenCTUSA
| | - Allan Acab
- Department of Pediatrics/Rady Children's HospitalDepartment of Cellular & Molecular MedicineSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
| | - Ben Tsuda
- Department of NeurosciencesSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
- Computational Neurobiology LaboratorySalk Institute for Biological StudiesLa JollaCAUSA
| | - Charles A Thomas
- Department of Pediatrics/Rady Children's HospitalDepartment of Cellular & Molecular MedicineSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
| | | | | | | | | | - Terrence J Sejnowski
- Computational Neurobiology LaboratorySalk Institute for Biological StudiesLa JollaCAUSA
- Institute for Neural ComputationUniversity of California San DiegoLa JollaCAUSA
- Division of Biological SciencesUniversity of California San DiegoLa JollaCAUSA
| | - Henning Ulrich
- Departamento de BioquímicaInstituto de QuímicaUniversidade de São PauloSão PauloBrazil
| | - Alysson R Muotri
- Department of Pediatrics/Rady Children's HospitalDepartment of Cellular & Molecular MedicineSchool of MedicineUniversity of California San DiegoLa JollaCAUSA
- Center for Academic Research and Training in AnthropogenyUniversity of California San DiegoLa JollaCAUSA
| |
Collapse
|
32
|
Alzugaray ME, Gavazzi MV, Ronderos JR. G protein-coupled receptor signal transduction and Ca 2+ signaling pathways of the allatotropin/orexin system in Hydra. Gen Comp Endocrinol 2021; 300:113637. [PMID: 33017583 DOI: 10.1016/j.ygcen.2020.113637] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/16/2020] [Accepted: 09/28/2020] [Indexed: 11/24/2022]
Abstract
Allatotropin is a pleiotropic peptide originally characterized in insects. The existence of AT neuropeptide signaling was proposed in other invertebrates. In fact, we previously proposed the presence of an AT-like system regulating feeding behavior in Hydra sp. Even in insects, the information about the AT signaling pathway is incomplete. The aim of this study is to analyze the signaling cascade activated by AT in Hydra plagiodesmica using a pharmacological approach. The results show the involvement of Ca2+ and IP3 signaling in the transduction pathway of the peptide. Furthermore, we confirm the existence of a GPCR system involved in this pathway, that would be coupled to a Gq subfamily of Gα protein, which activates a PLC, inducing an increase in IP3 and cytosolic Ca2+. To the best of our knowledge, this work represents the first in vivo approach to study the overall signaling pathway and intracellular events involved in the myoregulatory effect of AT in Hydra sp.
Collapse
Affiliation(s)
- María Eugenia Alzugaray
- Cátedra de Histología y Embriología Animal. Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (FCNyM-UNLP), Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - María Victoria Gavazzi
- Cátedra de Histología y Embriología Animal. Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (FCNyM-UNLP), Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Jorge Rafael Ronderos
- Cátedra de Histología y Embriología Animal. Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (FCNyM-UNLP), Argentina.
| |
Collapse
|
33
|
Dai W, Lou N, Xie D, Hu Z, Song H, Lu M, Shang D, Wu W, Peng J, Yin P, Lin Z. N-Ethyl-2-Pyrrolidinone-Substituted Flavan-3-Ols with Anti-inflammatory Activity in Lipopolysaccharide-Stimulated Macrophages Are Storage-Related Marker Compounds for Green Tea. J Agric Food Chem 2020; 68:12164-12172. [PMID: 33074673 DOI: 10.1021/acs.jafc.0c03952] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fresh green tea (GT) is commonly considered to have better sensory flavor and higher commercial value than long-term-stored GT; however, the chemical variations during storage are unclear. In this study, the chemical profiles of stored GT were surveyed among time-series samples from 0 to 19 months using a nontargeted metabolomics method. Seven N-ethyl-2-pyrrolidinone-substituted flavan-3-ols (EPSFs) increased from 0.022 ± 0.019 to 3.212 ± 0.057 mg/g within 19 months (correlation coefficients with storage duration ranging from 0.936 to 0.965), and they were the most significantly increased compounds among the 127 identified compounds. Two representative EPSFs (R-EGCG-cThea and S-EGCG-cThea) possess potential anti-inflammatory properties by suppressing the expression, phosphorylation, and nuclear translocation of nuclear factor kappa-B (NF-κB) p65 in lipopolysaccharide-stimulated macrophages based on western blotting and immunofluorescence results. In conclusion, EPSFs were found to be marker compounds for stored GT and showed potential anti-inflammatory activity by regulating the NF-κB signaling pathway.
Collapse
Affiliation(s)
- Weidong Dai
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| | - Ni Lou
- Clinical Laboratory of Integrative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, People's Republic of China
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Dongchao Xie
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| | - Zhengyan Hu
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310051, People's Republic of China
| | - Huiyi Song
- Clinical Laboratory of Integrative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, People's Republic of China
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Meiling Lu
- Agilent Technologies (China) Limited, Beijing 100102, People's Republic of China
| | - Dong Shang
- Clinical Laboratory of Integrative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, People's Republic of China
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Wenliang Wu
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| | - Jiakun Peng
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| | - Peiyuan Yin
- Clinical Laboratory of Integrative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, People's Republic of China
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Zhi Lin
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| |
Collapse
|
34
|
Brel O, Touré S, Levasseur M, Lechat C, Pellissier L, Wolfender JL, Van-Elslande E, Litaudon M, Dusfour I, Stien D, Eparvier V. Paecilosetin Derivatives as Potent Antimicrobial Agents from Isaria farinosa. J Nat Prod 2020; 83:2915-2922. [PMID: 33021377 DOI: 10.1021/acs.jnatprod.0c00444] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fifty-seven entomopathogenic microorganisms were screened against human pathogens and subjected to mass spectrometry molecular networking based dereplication. Isaria farinosa BSNB-1250, shown to produce potentially novel biologically active metabolites, was grown on a large scale on potato dextrose agar, and paecilosetin (1) and five new analogues (2-6) were subsequently isolated. The structures of the new compounds were elucidated using 1D and 2D NMR. The absolute configurations of compounds 1-6 were determined using Mosher ester derivatives (1, 3, 4), comparison of experimental and calculated ECD spectra (2-4 and 6), and single-crystal X-ray diffraction analysis (5). Compounds 1 and 5 exhibited strong antibacterial activity against MSSA and MRSA with MIC values of 1-2 μg/mL.
Collapse
Affiliation(s)
- Orianne Brel
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Seindé Touré
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Marceau Levasseur
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | | | - Léonie Pellissier
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, CH-1211 Geneva 4, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva 4, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, CH-1211 Geneva 4, Switzerland
| | - Elsa Van-Elslande
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Marc Litaudon
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Isabelle Dusfour
- Institut Pasteur de la Guyane, Unité de Contrôle et Adaptation des Vecteurs, BP6010, 97306 Cayenne, France
- Département de Santé Globale, Institut Pasteur, 75015, Paris, France
| | - Didier Stien
- Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM), Observatoire Océanologique, Sorbonne Universités, UPMC Univ. Paris 06, CNRS, 66650 Banyuls-sur-Mer, France
| | - Véronique Eparvier
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| |
Collapse
|
35
|
Robinson KA, Dunn M, Hussey SP, Fritz-Laylin LK. Identification of antibiotics for use in selection of the chytrid fungi Batrachochytrium dendrobatidis and Batrachochytrium salamandrivorans. PLoS One 2020; 15:e0240480. [PMID: 33079945 PMCID: PMC7575076 DOI: 10.1371/journal.pone.0240480] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/25/2020] [Indexed: 11/21/2022] Open
Abstract
Global amphibian populations are being decimated by chytridiomycosis, a deadly skin infection caused by the fungal pathogens Batrachochytrium dendrobatidis (Bd) and B. salamandrivorans (Bsal). Although ongoing efforts are attempting to limit the spread of these infections, targeted treatments are necessary to manage the disease. Currently, no tools for genetic manipulation are available to identify and test specific drug targets in these fungi. To facilitate the development of genetic tools in Bd and Bsal, we have tested five commonly used antibiotics with available resistance genes: Hygromycin, Blasticidin, Puromycin, Zeocin, and Neomycin. We have identified effective concentrations of each for selection in both liquid culture and on solid media. These concentrations are within the range of concentrations used for selecting genetically modified cells from a variety of other eukaryotic species.
Collapse
Affiliation(s)
- Kristyn A. Robinson
- Department of Biology, The University of Massachusetts Amherst, Amherst, MA, United States of America
| | - Mallory Dunn
- Department of Biology, The University of Massachusetts Amherst, Amherst, MA, United States of America
| | - Shane P. Hussey
- Department of Biology, The University of Massachusetts Amherst, Amherst, MA, United States of America
| | - Lillian K. Fritz-Laylin
- Department of Biology, The University of Massachusetts Amherst, Amherst, MA, United States of America
| |
Collapse
|
36
|
Kim MS, Kim SH, Yang SH, Kim MS. Restricting extracellular Ca2+ on gefitinib-resistant non-small cell lung cancer cells reverses altered epidermal growth factor-mediated Ca2+ response, which consequently enhances gefitinib sensitivity. PLoS One 2020; 15:e0238155. [PMID: 32841278 PMCID: PMC7447054 DOI: 10.1371/journal.pone.0238155] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/10/2020] [Indexed: 11/20/2022] Open
Abstract
Non-small cell lung cancer (NSCLC), one of the leading causes of cancer-related death, has a low 5-year survival rate owing to the inevitable acquired resistance toward antitumor drugs, platinum-based chemotherapy, and targeted therapy. Epidermal growth factor (EGF)-EGF receptor (EGFR) signaling activates downstream events leading to phospholipase C/inositol trisphosphate (IP3)/Ca2+ release from IP3-sensitive Ca2+ stores to modulate cell proliferation, motility, and invasion. However, the role of EGFR-mediated Ca2+ signaling in acquired drug resistance is not fully understood. Here, we analyzed alterations of intracellular Ca2+ ([Ca2+]i) responses between gefitinib-sensitive NSCLC PC-9 cells and gefitinib-resistant NSCLC PC-9/GR cells, and we found that acute EGF treatment elicited intracellular Ca2+ ([Ca2+]i) oscillations in PC-9 cells but not in PC-9/GR cells. PC-9/GR cells presented a more sustained basal [Ca2+]i level, lower endoplasmic reticulum Ca2+ level, and higher spontaneous extracellular Ca2+ ([Ca2+]e) influx than PC-9 cells. Notably, restricting [Ca2+]e in both cell types induced identical [Ca2+]i oscillations, dependent on phospholipase C and EGFR activation. Consequently, restricting [Ca2+]e in PC-9/GR cells upregulated gefitinib-mediated poly (ADP-ribose) polymerase cleavage, an increase in Bax/Bcl-2 ratio, cytotoxicity, and apoptosis. In addition, nuclear factor of activated T cell (NFAT1) induction in response to EGF was inhibited by gefitinib in PC-9 cells, whereas EGF-mediated NFAT1 induction in PC-9/GR cells was sustained regardless of gefitinib treatment. Restricting [Ca2+]e in PC-9/GR cells significantly reduced EGF-mediated NFAT1 induction. These findings indicate that spontaneous [Ca2+]e influx in NSCLC cells plays a pivotal role in developing acquired drug resistance and suggest that restricting [Ca2+]e may be a potential strategy for modulating drug-sensitivity.
Collapse
Affiliation(s)
- Mi Seong Kim
- Department of Oral Physiology, Institute of Biomaterial-Implant, School of Dentistry, Wonkwang University, Iksan, Republic of Korea
- Wonkwang Dental Research Institute, School of Dentistry, Wonkwang University, Iksan, Republic of Korea
| | - So Hui Kim
- Department of Carbon Convergence Engineering, College of Engineering, Wonkwang University, Iksan, Republic of Korea
| | - Sei Hoon Yang
- Department of Internal Medicine, School of Medicine, Wonkwang University, Iksan, Republic of Korea
| | - Min Seuk Kim
- Department of Oral Physiology, Institute of Biomaterial-Implant, School of Dentistry, Wonkwang University, Iksan, Republic of Korea
- * E-mail:
| |
Collapse
|
37
|
Yuan S, Fan K, Chen Z, Sun Y, Hou H, Zhu L. Structure of the HRV-C 3C-Rupintrivir Complex Provides New Insights for Inhibitor Design. Virol Sin 2020; 35:445-454. [PMID: 32103448 PMCID: PMC7462945 DOI: 10.1007/s12250-020-00196-4] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/25/2019] [Indexed: 10/24/2022] Open
Abstract
Human rhinoviruses (HRVs) are the predominant infectious agents for the common cold worldwide. The HRV-C species cause severe illnesses in children and are closely related to acute exacerbations of asthma. 3C protease, a highly conserved enzyme, cleaves the viral polyprotein during replication and assists the virus in escaping the host immune system. These key roles make 3C protease an important drug target. A few structures of 3Cs complexed with an irreversible inhibitor rupintrivir have been determined. These structures shed light on the determinants of drug specificity. Here we describe the structures of HRV-C15 3C in free and inhibitor-bound forms. The volume-decreased S1' subsite and half-closed S2 subsite, which were thought to be unique features of enterovirus A 3C proteases, appear in the HRV-C 3C protease. Rupintrivir assumes an "intermediate" conformation in the complex, which might open up additional avenues for the design of potent antiviral inhibitors. Analysis of the features of the three-dimensional structures and the amino acid sequences of 3C proteases suggest new applications for existing drugs.
Collapse
Affiliation(s)
- Shuai Yuan
- CAS Key Laboratory of Infection and Immunity, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, 06511, USA
| | - Kaiyue Fan
- CAS Key Laboratory of Infection and Immunity, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- Beijing Forestry University, No. 35 Tsinghua East Road, Haidian District, Beijing, 100083, China
| | - Zhonghao Chen
- Key Laboratory for Space Bioscience and Space Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Yao Sun
- CAS Key Laboratory of Infection and Immunity, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Hai Hou
- Key Laboratory for Space Bioscience and Space Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, China.
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, 710072, China.
| | - Ling Zhu
- CAS Key Laboratory of Infection and Immunity, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
| |
Collapse
|
38
|
Masaki K, Hiraki Y, Onishi H, Satoh Y, Roche PA, Tanaka S, Furuta K. Ligation of MHC Class II Induces PKC-Dependent Clathrin-Mediated Endocytosis of MHC Class II. Cells 2020; 9:E1810. [PMID: 32751549 PMCID: PMC7465434 DOI: 10.3390/cells9081810] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/24/2020] [Accepted: 07/28/2020] [Indexed: 11/17/2022] Open
Abstract
In addition to antigen presentation to CD4+ T cells, aggregation of cell surface major histocompatibility complex class II (MHC-II) molecules induces signal transduction in antigen presenting cells that regulate cellular functions. We previously reported that crosslinking of MHC-II induced the endocytosis of MHC-II, which was associated with decreased surface expression levels in murine dendritic cells (DCs) and resulted in impaired activation of CD4+ T cells. However, the downstream signal that induces MHC-II endocytosis remains to be elucidated. In this study, we found that the crosslinking of MHC-II induced intracellular Ca2+ mobilization, which was necessary for crosslinking-induced MHC-II endocytosis. We also found that these events were suppressed by inhibitors of Syk and phospholipase C (PLC). Treatments with a phorbol ester promoted MHC-II endocytosis, whereas inhibitors of protein kinase C (PKC) suppressed crosslinking-induced endocytosis of MHC-II. These results suggest that PKC could be involved in this process. Furthermore, crosslinking-induced MHC-II endocytosis was suppressed by inhibitors of clathrin-dependent endocytosis. Our results indicate that the crosslinking of MHC-II could stimulate Ca2+ mobilization and induce the clathrin-dependent endocytosis of MHC-II in murine DCs.
Collapse
Affiliation(s)
- Kento Masaki
- Department of Immunobiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan; (K.M.); (Y.H.); (Y.S.)
| | - Yuhji Hiraki
- Department of Immunobiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan; (K.M.); (Y.H.); (Y.S.)
| | - Hiroka Onishi
- Department of Immunobiology, Faculty of Pharmacy and Pharmaceutical Sciences, Okayama University, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan;
| | - Yuka Satoh
- Department of Immunobiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan; (K.M.); (Y.H.); (Y.S.)
| | - Paul A. Roche
- Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Satoshi Tanaka
- Department of Pharmacology, Division of Pathological Sciences, Kyoto Pharmaceutical University, Misasagi Nakauchi-cho 5, Yamashina-ku, Kyoto 607-8414, Japan;
| | - Kazuyuki Furuta
- Department of Immunobiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Tsushima naka 1-1-1, Kita-ku, Okayama 700-8530, Japan; (K.M.); (Y.H.); (Y.S.)
| |
Collapse
|
39
|
Wojcieszak J, Kuczyńska K, Zawilska JB. Four Synthetic Cathinones: 3-Chloromethcathinone, 4-Chloromethcathinone, 4-Fluoro-α-Pyrrolidinopentiophenone, and 4-Methoxy-α-Pyrrolidinopentiophenone Produce Changes in the Spontaneous Locomotor Activity and Motor Performance in Mice with Varied Profiles. Neurotox Res 2020; 38:536-551. [PMID: 32506339 PMCID: PMC7334283 DOI: 10.1007/s12640-020-00227-8] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/13/2020] [Accepted: 05/17/2020] [Indexed: 12/26/2022]
Abstract
Two chloromethcathinones, 3-chloromethcathinone (3-CMC) and 4-chloromethcathinone (4-CMC), and two para-substituted α-pyrrolidinophenones, 4-methoxy-α-pyrrolidinopentiophenone (4-MeO-PVP) and 4-fluoro-α-pyrrolidinopentiophenone (4-F-PVP), represent synthetic cathinones, the second most frequently abused group of new psychoactive substances (NPSs), which has aroused a worldwide health concern in the last decade. Synthetic cathinones act as psychostimulants by elevating extracellular levels of monoaminergic neurotransmitters. This study investigates effects of 3-CMC, 4-CMC, 4-MeO-PVP, and 4-F-PVP on the spontaneous locomotor activity and motor performance of mice. Additionally, neurotoxicity of substituted methcathinones against SH-SY5Y neuroblastoma cells was evaluated. All test cathinones stimulate in a dose-dependent manner horizontal locomotor activity of mice. Consistently to our prior findings, pyrrovalerones, but not methcathinone derivatives, produce dose-dependent elevation of vertical locomotor activity (rearing behavior). None of the tested compounds decreases the time spent on the accelerating rotarod, pointing to the lack of considerable motor disability in mice after acute exposition. Only 4-MeO-PVP at the high tested dose (20 mg/kg) increases motor performance of mice. Considering that α-pyrrolidinophenones are highly potent and selective DA uptake inhibitors, while chloromethcathinones enhance non-selective DA/5-HT release, we suggest that the increase of vertical locomotor activity and performance on rotarod in mice may serve as a behavioral indicator of the monoaminergic profile of synthetic cathinones. Finally, this study gives first insights into cytotoxicity of both 3-CMC and 4-CMC displayed against SH-SY5Y cells, which emerges and intensifies after prolonged incubation, suggesting the indirect mechanism of action, unrelated to interactions with monoamine transporters.
Collapse
Affiliation(s)
- Jakub Wojcieszak
- Department of Pharmacodynamics, Medical University of Lodz, 90-151, Lodz, Poland.
| | - Katarzyna Kuczyńska
- Department of Pharmacodynamics, Medical University of Lodz, 90-151, Lodz, Poland
| | - Jolanta B Zawilska
- Department of Pharmacodynamics, Medical University of Lodz, 90-151, Lodz, Poland
| |
Collapse
|
40
|
Larson EC, Lim AL, Pond CD, Craft M, Čavužić M, Waldrop GL, Schmidt EW, Barrows LR. Pyrrolocin C and equisetin inhibit bacterial acetyl-CoA carboxylase. PLoS One 2020; 15:e0233485. [PMID: 32470050 PMCID: PMC7259786 DOI: 10.1371/journal.pone.0233485] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 05/06/2020] [Indexed: 11/25/2022] Open
Abstract
Antimicrobial resistance is a growing global health and economic concern. Current antimicrobial agents are becoming less effective against common bacterial infections. We previously identified pyrrolocins A and C, which showed activity against a variety of Gram-positive bacteria. Structurally similar compounds, known as pyrrolidinediones (e.g., TA-289, equisetin), also display antibacterial activity. However, the mechanism of action of these compounds against bacteria was undetermined. Here, we show that pyrrolocin C and equisetin inhibit bacterial acetyl-CoA carboxylase (ACC), the first step in fatty acid synthesis. We used transcriptomic data, metabolomic analysis, fatty acid rescue and acetate incorporation experiments to show that a major mechanism of action of the pyrrolidinediones is inhibition of fatty acid biosynthesis, identifying ACC as the probable molecular target. This hypothesis was further supported using purified proteins, demonstrating that biotin carboxylase is the inhibited component of ACC. There are few known antibiotics that target this pathway and, therefore, we believe that these compounds may provide the basis for alternatives to current antimicrobial therapy.
Collapse
Affiliation(s)
- Erica C. Larson
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah, United States of America
| | - Albebson L. Lim
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah, United States of America
| | - Christopher D. Pond
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah, United States of America
| | - Matthew Craft
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana, United States of America
| | - Mirela Čavužić
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana, United States of America
| | - Grover L. Waldrop
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana, United States of America
| | - Eric W. Schmidt
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah, United States of America
| | - Louis R. Barrows
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah, United States of America
- * E-mail:
| |
Collapse
|
41
|
Balandis B, Ivanauskaitė G, Smirnovienė J, Kantminienė K, Matulis D, Mickevičius V, Zubrienė A. Synthesis and structure-affinity relationship of chlorinated pyrrolidinone-bearing benzenesulfonamides as human carbonic anhydrase inhibitors. Bioorg Chem 2020; 97:103658. [PMID: 32088419 DOI: 10.1016/j.bioorg.2020.103658] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/05/2020] [Accepted: 02/10/2020] [Indexed: 11/26/2022]
Abstract
A novel set of pyrrolidinone-based chlorinated benzenesulfonamide derivatives were synthesized and investigated for their binding affinity and selectivity against recombinant human carbonic anhydrases I-XIV using fluorescent thermal shift, p-nitrophenyl acetate hydrolysis and stopped-flow enzymatic inhibition assays. The hydrazones 10-22 prepared from 1-(2-chloro-4-sulfamoylphenyl)-5-oxopyrrolidine-3-carboxylic acid exhibited low nanomolar affinity against cancer-related CA IX (Kd in the range of 5.0-37 nM). Compounds with triazole or oxadiazole groups attached directly to pyrrolidinone moiety bound all CAs weaker than compounds with more flexible tail groups. Chloro group at the meta position of benzenesulfonamide derivatives increased affinity to all CAs as compared with binding data for nonchlorinated compounds. The compounds have a potential for further development of CA inhibitors with higher selectivity for a particular CA isozyme.
Collapse
Affiliation(s)
- Benas Balandis
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania
| | - Guostė Ivanauskaitė
- Department of Biothermodynamics and Drug Design, Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio 7, Vilnius LT-10257, Lithuania
| | - Joana Smirnovienė
- Department of Biothermodynamics and Drug Design, Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio 7, Vilnius LT-10257, Lithuania
| | - Kristina Kantminienė
- Department of Physical and Inorganic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania
| | - Daumantas Matulis
- Department of Biothermodynamics and Drug Design, Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio 7, Vilnius LT-10257, Lithuania
| | - Vytautas Mickevičius
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas LT-50254, Lithuania
| | - Asta Zubrienė
- Department of Biothermodynamics and Drug Design, Institute of Biotechnology, Life Sciences Center, Vilnius University, Saulėtekio 7, Vilnius LT-10257, Lithuania.
| |
Collapse
|
42
|
Vašíček O, Fedr R, Skoroplyas S, Chalupa D, Sklenář M, Tharra PR, Švenda J, Kubala L. Natural pseurotins and analogs thereof inhibit activation of B-cells and differentiation into the plasma cells. Phytomedicine 2020; 69:153194. [PMID: 32146299 DOI: 10.1016/j.phymed.2020.153194] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 01/29/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND The frequency of allergic diseases is constantly rising. Dysregulated production of isotype E immunoglobulins is one of the key factors behind allergic reactions and its modulation is therefore an important target for pharmacological intervention. Natural products of the pseurotin family were reported to be inhibitors of IgE production in B-cells. Mechanistic details underlying these effects are however not well understood. PURPOSE In the present study, we synthesized new analogs of natural pseurotins and extensively investigated their inhibitory effects on activation, proliferation and differentiation of B-cells, as well as on the production of IgE. STUDY DESIGN Effects of two natural pseurotins (pseurotins A and D) and a collection of fully synthetic pseurotin analogs were studied on mouse B-cells stimulated by the combination of IL-4 and E. coli lipopolysaccharide. The IgE production was determined along with cell viability and cell proliferation. The phosphorylation of selected members of the STAT transcription factor family was subsequently investigated. Finally, the in vivo effect of pseurotin D on the ovalbumin-induced delayed type hypersensitivity response was tested in mice. RESULTS We discovered that several fully synthetic pseurotin analogs were able to decrease the production of IgE in stimulated B-cells with potency comparable to that of pseurotins A and D. We found that the two natural pseurotins and the active synthetic analogs inhibited the phosphorylation of STAT3, STAT5 and STAT6 proteins in stimulated B-cells, resulting in the inhibition of B-cell proliferation and differentiation into the plasma cells. In vivo, pseurotin D decreased ovalbumin-induced foot pad edema. CONCLUSION Our results advance the current mechanistic understanding of the pseurotin-induced inhibition of IgE production in B-cells by linking the effect to STAT signaling, and associated modulation of B-cell proliferation and differentiation. Together with our finding that structurally simpler pseurotin analogs were able to reproduce the effects of natural pseurotins, the presented work has implications for the future research on these secondary metabolites in the context of allergic diseases.
Collapse
Affiliation(s)
- Ondřej Vašíček
- Institute of Biophysics of the Czech Academy of Sciences, Brno 612 65, Czech Republic; International Clinical Research Center, St. Anne's University Hospital, Brno 656 91, Czech Republic
| | - Radek Fedr
- Institute of Biophysics of the Czech Academy of Sciences, Brno 612 65, Czech Republic; International Clinical Research Center, St. Anne's University Hospital, Brno 656 91, Czech Republic
| | - Svitlana Skoroplyas
- Institute of Biophysics of the Czech Academy of Sciences, Brno 612 65, Czech Republic; Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - David Chalupa
- Department of Chemistry, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Matěj Sklenář
- Department of Chemistry, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Prabhakara Rao Tharra
- Department of Chemistry, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Jakub Švenda
- International Clinical Research Center, St. Anne's University Hospital, Brno 656 91, Czech Republic; Department of Chemistry, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic.
| | - Lukáš Kubala
- Institute of Biophysics of the Czech Academy of Sciences, Brno 612 65, Czech Republic; International Clinical Research Center, St. Anne's University Hospital, Brno 656 91, Czech Republic; Institute of Experimental Biology, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic.
| |
Collapse
|
43
|
Abo-Rady M, Kalmbach N, Pal A, Schludi C, Janosch A, Richter T, Freitag P, Bickle M, Kahlert AK, Petri S, Stefanov S, Glass H, Staege S, Just W, Bhatnagar R, Edbauer D, Hermann A, Wegner F, Sterneckert JL. Knocking out C9ORF72 Exacerbates Axonal Trafficking Defects Associated with Hexanucleotide Repeat Expansion and Reduces Levels of Heat Shock Proteins. Stem Cell Reports 2020; 14:390-405. [PMID: 32084385 PMCID: PMC7066330 DOI: 10.1016/j.stemcr.2020.01.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 01/18/2020] [Accepted: 01/21/2020] [Indexed: 12/13/2022] Open
Abstract
In amyotrophic lateral sclerosis (ALS) motor neurons (MNs) undergo dying-back, where the distal axon degenerates before the soma. The hexanucleotide repeat expansion (HRE) in C9ORF72 is the most common genetic cause of ALS, but the mechanism of pathogenesis is largely unknown with both gain- and loss-of-function mechanisms being proposed. To better understand C9ORF72-ALS pathogenesis, we generated isogenic induced pluripotent stem cells. MNs with HRE in C9ORF72 showed decreased axonal trafficking compared with gene corrected MNs. However, knocking out C9ORF72 did not recapitulate these changes in MNs from healthy controls, suggesting a gain-of-function mechanism. In contrast, knocking out C9ORF72 in MNs with HRE exacerbated axonal trafficking defects and increased apoptosis as well as decreased levels of HSP70 and HSP40, and inhibition of HSPs exacerbated ALS phenotypes in MNs with HRE. Therefore, we propose that the HRE in C9ORF72 induces ALS pathogenesis via a combination of gain- and loss-of-function mechanisms.
Collapse
Affiliation(s)
- Masin Abo-Rady
- Technische Universität Dresden, Center for Regenerative Therapies TU Dresden (CRTD), 01307 Dresden, Germany
| | - Norman Kalmbach
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany
| | - Arun Pal
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Carina Schludi
- German Center for Neurodegenerative Diseases (DZNE) and Munich Cluster for System Neurology (SyNergy), 81377 Munich, Germany
| | - Antje Janosch
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Tanja Richter
- Institute of Human Genetics, University of Ulm, 89081 Ulm, Germany
| | - Petra Freitag
- Institut für Klinische Genetik, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Marc Bickle
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Anne-Karin Kahlert
- Institut für Klinische Genetik, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Susanne Petri
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany
| | - Stefan Stefanov
- Technische Universität Dresden, Center for Regenerative Therapies TU Dresden (CRTD), 01307 Dresden, Germany
| | - Hannes Glass
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany; Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology and Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
| | - Selma Staege
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany
| | - Walter Just
- Institute of Human Genetics, University of Ulm, 89081 Ulm, Germany
| | | | - Dieter Edbauer
- German Center for Neurodegenerative Diseases (DZNE) and Munich Cluster for System Neurology (SyNergy), 81377 Munich, Germany
| | - Andreas Hermann
- Technische Universität Dresden, Center for Regenerative Therapies TU Dresden (CRTD), 01307 Dresden, Germany; Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany; Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology and Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany; German Center for Neurodegenerative Diseases (DZNE) Rostock/Greifswald, 18147 Rostock, Germany
| | - Florian Wegner
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany.
| | - Jared L Sterneckert
- Technische Universität Dresden, Center for Regenerative Therapies TU Dresden (CRTD), 01307 Dresden, Germany.
| |
Collapse
|
44
|
Eshleman N, Luo X, Capaldi A, Buchan JR. Alterations of signaling pathways in response to chemical perturbations used to measure mRNA decay rates in yeast. RNA 2020; 26:10-18. [PMID: 31601735 PMCID: PMC6913126 DOI: 10.1261/rna.072892.119] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 10/04/2019] [Indexed: 06/10/2023]
Abstract
Assessing variations in mRNA stability typically involves inhibiting transcription either globally or in a gene-specific manner. Alternatively, mRNA pulse-labeling strategies offer a means to calculate mRNA stability without inhibiting transcription. However, key stress-responsive cell signaling pathways, which affect mRNA stability, may themselves be perturbed by the approaches used to measure mRNA stability, leading to artifactual results. Here, we have focused on common strategies to measure mRNA half-lives in yeast and determined that commonly used transcription inhibitors thiolutin and 1,10 phenanthroline inhibit TORC1 signaling, PKC signaling, and partially activate HOG signaling. Additionally, 4-thiouracil (4tU), a uracil analog used in mRNA pulse-labeling approaches, modestly induces P-bodies, mRNA-protein granules implicated in storage and decay of nontranslating mRNA. Thiolutin also induces P-bodies, whereas phenanthroline has no effect. Doxycycline, which controls "Tet On/Tet Off" regulatable promoters, shows no impact on the above signaling pathways or P-bodies. In summary, our data argues that broad-acting transcriptional inhibitors are problematic for determining mRNA half-life, particularly if studying the impacts of the TORC1, HOG, or PKC pathway on mRNA stability. Regulatable promoter systems are a preferred approach for individual mRNA half-life studies, with 4tU labeling representing a good approach to global mRNA half-life analysis, despite modestly inducing P-bodies.
Collapse
Affiliation(s)
- Nichole Eshleman
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona 85721, USA
| | - Xiangxia Luo
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona 85721, USA
| | - Andrew Capaldi
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona 85721, USA
| | - J Ross Buchan
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, Arizona 85721, USA
| |
Collapse
|
45
|
Yang S, Ren X, Liang Y, Yan Y, Zhou Y, Hu J, Wang Z, Song F, Wang F, Liao W, Liao W, Ding Y, Liang L. KNK437 restricts the growth and metastasis of colorectal cancer via targeting DNAJA1/CDC45 axis. Oncogene 2020; 39:249-261. [PMID: 31477839 DOI: 10.1038/s41388-019-0978-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 05/27/2019] [Accepted: 06/12/2019] [Indexed: 02/05/2023]
Abstract
As an inhibitor of heat shock proteins (HSPs), KNK437 has been reported to play an anti-tumor role in several cancers. But its therapeutic effect and mechanisms in colorectal cancer (CRC) remain unclear. Here, KNK437 sharply inhibited the level of DnaJ heat shock protein family (Hsp40) member A1 (DNAJA1), followed by DNAJB1, but had little effect on the levels of HSP27, HSP105, HSP90, and HSP70 in CRC cells. DNAJA1 promoted CRC cell proliferation in vitro and tumor growth and metastasis in vivo. Mechanistically, DNAJA1 was activated by E2F transcription factor 1 (E2F1) and then promoted cell cycle by stabilizing cell division cycle protein 45 (CDC45), which could be reversed by KNK437. DNAJA1 was significantly upregulated in CRC tissues and positively correlated with serosa invasion, lymph node metastasis. High level of DNAJA1 predicted poor prognosis for CRC patients. Its expression was highly linked with E2F1 and CDC45 in CRC tissues. More importantly, KNK437 significantly suppressed the growth of DNAJA1 expressing tumor in vivo. The combined treatment of KNK437 with 5-FU/L-OHP chemotherapy reduced liver metastasis of CRC. These data reveal a novel mechanism of KNK437 in anti-tumor therapy of CRC and provides a newly therapeutic strategy with potential translation to the CRC patients.
Collapse
Affiliation(s)
- Shaoshan Yang
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Department of Pathology, The Second Affiliated Hospital of Shantou University Medical College, Shantou, 515041, Guangdong Province, People's Republic of China
| | - Xiaoli Ren
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Yunshi Liang
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Yongrong Yan
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Yangshu Zhou
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Jinlong Hu
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Zhizhi Wang
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Fuyao Song
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Feifei Wang
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Wangjun Liao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Wenting Liao
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Yanqing Ding
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China
| | - Li Liang
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong Province, People's Republic of China.
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, 510515, Guangdong Province, People's Republic of China.
| |
Collapse
|
46
|
Xu J, Zeug A, Riederer B, Yeruva S, Griesbeck O, Daniel H, Tuo B, Ponimaskin E, Dong H, Seidler U. Calcium-sensing receptor regulates intestinal dipeptide absorption via Ca 2+ signaling and IK Ca activation. Physiol Rep 2020; 8:e14337. [PMID: 31960592 PMCID: PMC6971415 DOI: 10.14814/phy2.14337] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Although absorption of di- and tripeptides into intestinal epithelial cells occurs via the peptide transporter 1 (PEPT1, also called solute carrier family 15 member 1 (SLC15A1)), the detailed regulatory mechanisms are not fully understood. We examined: (a) whether dipeptide absorption in villous enterocytes is associated with a rise in cytosolic Ca2+ ([Ca2+ ]cyt ), (b) whether the calcium sensing receptor (CaSR) is involved in dipeptide-elicited [Ca2+ ]cyt signaling, and (c) what potential consequences of [Ca2+ ]cyt signaling may enhance enterocyte dipeptide absorption. Dipeptide Gly-Sar and CaSR agonist spermine markedly raised [Ca2+ ]cyt in villous enterocytes, which was abolished by NPS-2143, a selective CaSR antagonist and U73122, an phospholipase C (PLC) inhibitor. Apical application of Gly-Sar induced a jejunal short-circuit current (Isc), which was reduced by NPS-2143. CaSR expression was identified in the lamina propria and on the basal enterocyte membrane of mouse jejunal mucosa in both WT and Slc15a1-/- animals, but Gly-Sar-induced [Ca2+ ]cyt signaling was significantly decreased in Slc15a1-/- villi. Clotrimazole and TRM-34, two selective blockers of the intermediate conductance Ca2+ -activated K+ channel (IKCa ), but not iberiotoxin, a selective blocker of the large-conductance K+ channel (BKCa ) and apamin, a selective blocker of the small-conductance K+ channel (SKCa ), significantly inhibited Gly-Sar-induced Isc in native tissues. We reveal a novel CaSR-PLC-Ca2+ -IKCa pathway in the regulation of small intestinal dipeptide absorption, which may be exploited as a target for future drug development in human nutritional disorders.
Collapse
Affiliation(s)
- Jingyu Xu
- Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical SchoolHannoverGermany
- Research GastroenterologyAffiliated Hospital of Zunyi Medical UniversityZunyiChina
| | - Andre Zeug
- Cellular NeurophysiologyHannover Medical SchoolHannoverGermany
| | - Brigitte Riederer
- Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical SchoolHannoverGermany
| | - Sunil Yeruva
- Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical SchoolHannoverGermany
| | | | - Hannelore Daniel
- Nutritional PhysiologyTechnical University of MunichFreisingGermany
| | - Biguang Tuo
- Research GastroenterologyAffiliated Hospital of Zunyi Medical UniversityZunyiChina
| | | | - Hui Dong
- Department of MedicineUniversity of California, San DiegoLa JollaCAUSA
| | - Ursula Seidler
- Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical SchoolHannoverGermany
| |
Collapse
|
47
|
Czigler A, Toth L, Szarka N, Szilágyi K, Kellermayer Z, Harci A, Vecsernyes M, Ungvari Z, Szolics A, Koller A, Buki A, Toth P. Prostaglandin E 2, a postulated mediator of neurovascular coupling, at low concentrations dilates whereas at higher concentrations constricts human cerebral parenchymal arterioles. Prostaglandins Other Lipid Mediat 2019; 146:106389. [PMID: 31689497 DOI: 10.1016/j.prostaglandins.2019.106389] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 04/18/2019] [Revised: 10/18/2019] [Accepted: 10/28/2019] [Indexed: 02/04/2023]
Abstract
There is considerable controversy regarding the vasoactive action of prostaglandin E2 (PGE2). On the one hand, indirect evidence implicates that astrocytic release of PGE2 contributes to neurovascular coupling responses mediating functional hyperemia in the brain. On the other hand, overproduction of PGE2 was also reported to contribute to cerebral vasospasm associated with subarachnoid hemorrhage. The present study was conducted to resolve this controversy by determining the direct vasoactive effects of PGE2 in resistance-sized human cerebral parenchymal arterioles. To achieve this goal PGE2-induced isotonic vasomotor responses were assessed in parenchymal arterioles isolated from fronto-temporo-parietal cortical tissues surgically removed from patients and expression of PGE2 receptors were examined. In functionally intact parenchymal arterioles lower concentrations of PGE2 (from 10-8 to 10-6 mol/l) caused significant, endothelium-independent vasorelaxation, which was inhibited by the EP4 receptor blocker BGC201531. In contrast, higher concentrations of PGE2 evoked significant EP1-dependent vasoconstriction, which could not be reversed by the EP4 receptor agonist CAY10598. We also confirmed previous observations that PGE2 primarily evokes constriction in intracerebral arterioles isolated from R. norvegicus. Importantly, vascular mRNA and protein expression of vasodilator EP4 receptors was significantly higher than that of vasoconstrictor EP1 receptors in human cerebral arterioles. PGE2 at low concentrations dilates whereas at higher concentrations constricts human cerebral parenchymal arterioles. This bimodal vasomotor response is consistent with both the proposed vasodilator role of PGE2 during functional hyperemia and its putative role in cerebral vasospasm associated with subarachnoid hemorrhage in human patients.
Collapse
Affiliation(s)
- Andras Czigler
- Department of Neurosurgery and Szentagothai Research Center, University of Pecs, Medical School, Pecs, Hungary; Institute for Translational Medicine, University of Pecs, Medical School, Pecs, Hungary
| | - Luca Toth
- Department of Neurosurgery and Szentagothai Research Center, University of Pecs, Medical School, Pecs, Hungary; Institute for Translational Medicine, University of Pecs, Medical School, Pecs, Hungary
| | - Nikolett Szarka
- Department of Neurosurgery and Szentagothai Research Center, University of Pecs, Medical School, Pecs, Hungary; Institute for Translational Medicine, University of Pecs, Medical School, Pecs, Hungary
| | - Krisztina Szilágyi
- Department of Neurosurgery and Szentagothai Research Center, University of Pecs, Medical School, Pecs, Hungary; Institute for Translational Medicine, University of Pecs, Medical School, Pecs, Hungary
| | - Zoltan Kellermayer
- Department of Immunology and Biotechnology, University of Pecs, Medical School, Pecs, Hungary
| | - Alexandra Harci
- Department of Medical Biology and Central Electron Microscope Laboratory, University of Pecs, Medical School, Pecs, Hungary
| | - Monika Vecsernyes
- Department of Medical Biology and Central Electron Microscope Laboratory, University of Pecs, Medical School, Pecs, Hungary
| | - Zoltan Ungvari
- Reynolds Oklahoma Center on Aging, Donald W. Reynolds Department of Geriatric Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Alex Szolics
- Department of Neurosurgery and Szentagothai Research Center, University of Pecs, Medical School, Pecs, Hungary
| | - Akos Koller
- Department of Neurosurgery and Szentagothai Research Center, University of Pecs, Medical School, Pecs, Hungary; Department of Morphology and Physiology, Faculty of Health Sciences, Semmelweis University, Budapest, Hungary; Department of Physiology, New York Medical College, Valhalla, NY USA
| | - Andras Buki
- Department of Neurosurgery and Szentagothai Research Center, University of Pecs, Medical School, Pecs, Hungary
| | - Peter Toth
- Department of Neurosurgery and Szentagothai Research Center, University of Pecs, Medical School, Pecs, Hungary; Institute for Translational Medicine, University of Pecs, Medical School, Pecs, Hungary; Reynolds Oklahoma Center on Aging, Donald W. Reynolds Department of Geriatric Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA; MTA-PTE Clinical Neuroscience MR Research Group, Pecs, Hungary.
| |
Collapse
|
48
|
Lee SR, Lee D, Eom HJ, Rischer M, Ko YJ, Kang KS, Kim CS, Beemelmanns C, Kim KH. Hybrid Polyketides from a Hydractinia-Associated Cladosporium sphaerospermum SW67 and Their Putative Biosynthetic Origin. Mar Drugs 2019; 17:md17110606. [PMID: 31653089 PMCID: PMC6891565 DOI: 10.3390/md17110606] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 10/16/2019] [Accepted: 10/20/2019] [Indexed: 01/20/2023] Open
Abstract
Five hybrid polyketides (1a, 1b, and 2–4) containing tetramic acid core including a new hybrid polyketide, cladosin L (1), were isolated from the marine fungus Cladosporium sphaerospermum SW67, which was isolated from the marine hydroid polyp of Hydractinia echinata. The hybrid polyketides were isolated as a pair of interconverting geometric isomers. The structure of 1 was determined based on 1D and 2D NMR spectroscopic and HR-ESIMS analyses. Its absolute configuration was established by quantum chemical electronic circular dichroism (ECD) calculations and modified Mosher’s method. Tetramic acid-containing compounds are reported to be derived from a hybrid PKS-NRPS, which was also proved by analyzing our 13C-labeling data. We investigated whether compounds 1–4 could prevent cell damage induced by cisplatin, a platinum-based anticancer drug, in LLC-PK1 cells. Co-treatment with 2 and 3 ameliorated the damage of LLC-PK1 cells induced by 25 μM of cisplatin. In particular, the effect of compound 2 at 100 μM (cell viability, 90.68 ± 0.81%) was similar to the recovered cell viability of 88.23 ± 0.25% with 500 μM N-acetylcysteine (NAC), a positive control.
Collapse
Affiliation(s)
- Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Hee Jeong Eom
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Maja Rischer
- Leibniz Institute for Natural Product Research and Infection Biology e.V., Hans-Knöll-Institute (HKI), 07745 Jena, Germany.
| | - Yoon-Joo Ko
- Laboratory of Nuclear Magnetic Resonance, National Center for Inter-University Research Facilities (NCIRF), Seoul National University, Gwanak-gu, Seoul 08826, Korea.
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| | - Chung Sub Kim
- Department of Chemistry, Yale University, New Haven, CT 06520, USA.
- Chemical Biology Institute, Yale University, West Haven, CT 06516, USA.
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology e.V., Hans-Knöll-Institute (HKI), 07745 Jena, Germany.
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| |
Collapse
|
49
|
Milanick WJ, Polo-Parada L, Dantzler HA, Kline DD. Activation of alpha-1 adrenergic receptors increases cytosolic calcium in neurones of the paraventricular nucleus of the hypothalamus. J Neuroendocrinol 2019; 31:e12791. [PMID: 31494990 PMCID: PMC7003713 DOI: 10.1111/jne.12791] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 08/22/2019] [Accepted: 09/04/2019] [Indexed: 12/15/2022]
Abstract
Norepinephrine (NE) activates adrenergic receptors (ARs) in the hypothalamic paraventricular nucleus (PVN) to increase excitatory currents, depolarise neurones and, ultimately, augment neuro-sympathetic and endocrine output. Such cellular events are known to potentiate intracellular calcium ([Ca2+ ]i ); however, the role of NE with respect to modulating [Ca2+ ]i in PVN neurones and the mechanisms by which this may occur remain unclear. We evaluated the effects of NE on [Ca2+ ]i of acutely isolated PVN neurones using Fura-2 imaging. NE induced a slow increase in [Ca2+ ]i compared to artificial cerebrospinal fluid vehicle. NE-induced Ca2+ elevations were mimicked by the α1 -AR agonist phenylephrine (PE) but not by α2 -AR agonist clonidine (CLON). NE and PE but not CLON also increased the overall number of neurones that increase [Ca2+ ]i (ie, responders). Elimination of extracellular Ca2+ or intracellular endoplasmic reticulum Ca2+ stores abolished the increase in [Ca2+ ]i and reduced responders. Blockade of voltage-dependent Ca2+ channels abolished the α1 -AR induced increase in [Ca2+ ]i and number of responders, as did inhibition of phospholipase C inhibitor, protein kinase C and inositol triphosphate receptors. Spontaneous phasic Ca2+ events, however, were not altered by NE, PE or CLON. Repeated K+ -induced membrane depolarisation produced repetitive [Ca2+ ]i elevations. NE and PE increased baseline Ca2+ , whereas NE decreased the peak amplitude. CLON also decreased peak amplitude but did not affect baseline [Ca2+ ]i . Taken together, these data suggest receptor-specific influence of α1 and α2 receptors on the various modes of calcium entry in PVN neurones. They further suggest Ca2+ increase via α1 -ARs is co-dependent on extracellular Ca2+ influx and intracellular Ca2+ release, possibly via a phospholipase C inhibitor-mediated signalling cascade.
Collapse
Affiliation(s)
- William J. Milanick
- Department of Biomedical Sciences, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO 65211
| | - Luis Polo-Parada
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO 65211
| | - Heather A. Dantzler
- Department of Biomedical Sciences, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO 65211
| | - David D. Kline
- Department of Biomedical Sciences, University of Missouri, Columbia MO 65211
- Dalton Cardiovascular Research Center, University of Missouri, Columbia MO 65211
| |
Collapse
|
50
|
Chen TH, Weber FE, Malina-Altzinger J, Ghayor C. Epigenetic drugs as new therapy for tumor necrosis factor-α-compromised bone healing. Bone 2019; 127:49-58. [PMID: 31152802 DOI: 10.1016/j.bone.2019.05.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 03/05/2019] [Revised: 05/20/2019] [Accepted: 05/27/2019] [Indexed: 02/07/2023]
Abstract
Impaired bone regeneration by excess inflammation leads to failure of bone healing. Current therapies display limited benefits making new treatments imperative. Our recent discoveries of the anti-inflammatory characteristics of bromodomain and extra terminal domain (BET) inhibitors, N-methylpyrrolidone (NMP) and N,N-Dimethylacetamide (DMA), implicate possible therapeutic use of epigenetic drugs in inflammation-impaired bone healing. Here, we investigated the effects of NMP and DMA on osteogenesis in vitro and ex vivo under the influence of TNFα, a key cytokine responsible for impaired fracture healing. NMP and DMA pre-treatment recovered TNFα-inhibited expression of essential osteoblastic genes, Alp, Runx2, and Osterix as well as mineralization in multipotent stem cells, but not in pre-osteoblasts and calvarial osteoblasts. The mechanism of action involves the recovery of TNFα-suppressed BMP-induced Smad signaling and the reduction of TNFα-triggered ERK pathway. In addition, ERK inhibitor treatment diminished the effect of TNFα on osteogenesis, which reinforces the role of ERK pathway in the adverse effect of TNFα. Furthermore, endochondral ossification was analyzed in an ex vivo bone culture model. TNFα largely abrogated BMP-promoted growth of mineralized bone while pre-treatment of NMP and DMA prevented the deleterious effect of TNFα. Taken together, these data shed light on developing low- affinity epigenetic drugs as new therapies for inflammation-compromised bone healing.
Collapse
Affiliation(s)
- Tse-Hsiang Chen
- University of Zurich, Center of Dental Medicine, Oral Biotechnology & Bioengineering, Plattenstrasse11, 8032 Zürich, Switzerland; Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Switzerland
| | - Franz E Weber
- University of Zurich, Center of Dental Medicine, Oral Biotechnology & Bioengineering, Plattenstrasse11, 8032 Zürich, Switzerland; Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Switzerland; CABMM, Center for Applied Biotechnology and Molecular Medicine, University of Zurich, Zürich, Switzerland
| | - Johann Malina-Altzinger
- Limmat Cleft and Craniofacial Centre, Zürich MKG, Hardturmstrasse 133, 8005 Zürich, Switzerland
| | - Chafik Ghayor
- University of Zurich, Center of Dental Medicine, Oral Biotechnology & Bioengineering, Plattenstrasse11, 8032 Zürich, Switzerland.
| |
Collapse
|