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Krivoshein G, Della Pietra A, Savinainen J, van den Maagdenberg AMJM, Giniatullin R. Differential inhibitory effects of endocannabinoids on neuronal firing of mouse meningeal afferents. J Headache Pain 2025; 26:112. [PMID: 40355840 PMCID: PMC12070673 DOI: 10.1186/s10194-025-02041-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2025] [Accepted: 04/17/2025] [Indexed: 05/15/2025] Open
Abstract
BACKGROUND Increasing endocannabinoids (endoCBs), anandamide (AEA) and 2-arachidonoylglycerol (2-AG), through inhibition of the degrading hydrolase enzymes, fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL), respectively, has been proposed as approach to alleviate migraine pain. Notwithstanding, the impact of AEA and 2-AG on neuronal firing of meningeal afferents, which is relevant to the genesis of migraine pain, remains elusive. METHODS The impact of AEA and 2-AG on meningeal nerve afferent firing was examined through electrophysiological evaluation upon application of 50 mM KCl with or without DMSO, exogenous AEA (10 µM), or 2-AG (10 µM) to separate groups of C57BL/6J mouse hemiskull preparations. At the end of each experiment, capsaicin (1 µM), an agonist of TRPV1 channels, was tested, as a positive control of presumably nociceptive firing. Advanced clustering and spectral analysis on the electrophysiological data allowed differentiating spiking patterns with respect to their temporal and neurochemical profiles. Activity-based protein profiling and liquid chromatography with tandem mass spectrometry was used to assess endogenous FAAH and MAGL activity and determine endogenous levels of AEA and 2-AG in mouse meninges. RESULTS Local application of endoCBs decreased KCl-induced firing of meningeal nerve afferents, which was most profound for AEA. AEA first produced a short, mild activation in firing, which was followed by a long-lasting reduction. Instead, 2-AG directly led to a short-lasting reduction in firing. Cluster analysis revealed that the transient activation by AEA involved fibers with small-amplitude spikes fired at rates of 1-2 Hz, whereas the persistently suppressed fibers consisted of high-amplitude spikes fired at rates exceeding 10 Hz. Only AEA inhibited subsequent capsaicininduced firing in the afferents long after AEA application, suggesting a broader mode of action for AEA than 2-AG. The more profound inhibitory effects of AEA are consistent with the observed higher activity of FAAH over MAGL and lower level of endogenous AEA than 2-AG in mouse meninges. CONCLUSION Our study revealed a stronger anti-nociceptive action of AEA than of 2-AG, as measured by meningeal afferent firing in mouse hemiskulls. This difference can be exploited for relieving migraine pain by primarily increasing the tone of AEA through inhibition of FAAH outside the central nervous system.
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Affiliation(s)
- Georgii Krivoshein
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands.
| | - Adriana Della Pietra
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Juha Savinainen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Arn M J M van den Maagdenberg
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
- Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
| | - Rashid Giniatullin
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland.
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Brugia F, Ivanov K, Aroviita A, Giniatullina R, Lehtonen M, Malm T, Savinainen J, Giniatullin R, Della Pietra A. Inhibition of endocannabinoid hydrolases MAGL, FAAH and ABHD6 by AKU-005 reduces ex vivo cortical spreading depression. J Headache Pain 2025; 26:85. [PMID: 40269679 PMCID: PMC12016430 DOI: 10.1186/s10194-025-02030-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2025] [Accepted: 04/08/2025] [Indexed: 04/25/2025] Open
Abstract
BACKGROUND Migraine is a common neurovascular disorder that remains currently untreated in half of the patients. One third of migraine patients experience aura, which is associated with the development of cortical spreading depolarization (CSD), a wave of depolarization involving neurons and glial cells. Cannabinoids have proven to be a promising class of compounds for the treatment of migraine pain. In this study, we are proposing a new strategy to counteract development of CSD and downstream events via multicomponent enhancement of the endocannabinoid system (ECS) by using a AKU-005, to simultaneously target several key endocannabinoids hydrolases. To this end, we profiled the activity of selective endocannabinoid hydrolases and their inhibition by AKU-005 and analyzed the effect of AKU-005 on the development of CSD in an ex vivo cortical slice model. METHODS The inhibitory profile of AKU-005 was evaluated by a glycerol assay of lysates from HEK293 cells expressing mouse and human MAGL and ABHD6. After ex vivo treatment of cortex slices of Wistar rats and C57 BL/6 J-OlaHsd mice, endocannabinoids were quantified by mass spectrometry (LC-MS/MS), and activity of the hydrolases MAGL, FAAH, and ABHD6 were measured by activity-based protein profiling (ABPP). The effect of AKU-005 on ex vivo CSD wave in cortical slices was studied by live calcium imaging. RESULTS Ex vivo, AKU-005 inhibited MAGL, FAAH, and ABHD6, increasing 2-arachidonoylglycerol (2-AG) and anandamide (AEA) levels in rat cortex under both basal and CSD conditions. In mice, AKU-005 showed a milder effect, inhibiting MAGL only under CSD conditions and increasing 2-AG levels in both basal and CSD states. In vitro analyses confirmed the ex vivo findings for rats and revealed basal MAGL inhibition in mice cortex. AKU-005, previously reported as a double MAGL/FAAH-inhibitor, also inhibited overexpressed mouse and human ABHD6, a little studied 2-AG-hydrolyzing enzyme in brain. In line with these results, AKU-005 reduced CSD events in cortical slices from both rodent species, with higher efficacy in rats. CONCLUSIONS Given the distinct profile of endocannabinoids hydrolases activities between rats and mice in the brain areas associated with migraine, AKU-005 may target multiple endocannabinoid hydrolases to serve as an efficient treatment option for migraine with aura.
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Affiliation(s)
- Flavia Brugia
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Konstantin Ivanov
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Auni Aroviita
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Raisa Giniatullina
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Marko Lehtonen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Tarja Malm
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Juha Savinainen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Rashid Giniatullin
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Adriana Della Pietra
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland.
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Della Pietra A, Krivoshein G, Ivanov K, Giniatullina R, Jyrkkänen HK, Leinonen V, Lehtonen M, van den Maagdenberg AMJM, Savinainen J, Giniatullin R. Potent dual MAGL/FAAH inhibitor AKU-005 engages endocannabinoids to diminish meningeal nociception implicated in migraine pain. J Headache Pain 2023; 24:38. [PMID: 37038131 PMCID: PMC10088116 DOI: 10.1186/s10194-023-01568-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/17/2023] [Indexed: 04/12/2023] Open
Abstract
BACKGROUND Engaging the endocannabinoid system through inhibition of monoacylglycerol lipase (MAGL) and fatty acid amide hydrolase (FAAH), degrading endocannabinoids (endoCBs) 2-arachidonoylglycerol (2-AG) and anandamide (AEA), was proposed as a promising approach to ameliorate migraine pain. However, the activity of MAGL and FAAH and action of endoCB on spiking activity of meningeal afferents, from which migraine pain originates, has not been explored thus far. Therefore, we here explored the analgesic effects of endoCB enhancement in rat and human meningeal tissues. METHODS Both MAGL and FAAH activity and local 2-AG and AEA levels were measured by activity-based protein profiling (ABPP) and LC-MS/MS, respectively, in rat meninges obtained from hemiskulls of P38-P40 Wistar rats and human meninges from elderly patients undergoing non-migraine related neurosurgery. The action on endoCBs upon administration of novel dual MAGL/FAAH inhibitor AKU-005 on meningeal afferents excitability was tested by investigating paired KCl-induced spiking and validation with local (co-)application of either AEA or 2-AG. Finally, the specific TRPV1 agonist capsaicin and blocker capsazepine were tested. RESULTS The basal level of 2-AG exceeded that of AEA in rat and human meninges. KCl-induced depolarization doubled the level of AEA. AKU-005 slightly increased spontaneous spiking activity whereas the dual MAGL/FAAH inhibitor significantly decreased excitation of nerve fibres induced by KCl. Similar inhibitory effects on meningeal afferents were observed with local applications of 2-AG or AEA. The action of AKU-005 was reversed by CB1 antagonist AM-251, implying CB1 receptor involvement in the anti-nociceptive effect. The inhibitory action of AEA was also reversed by AM-251, but not with the TRPV1 antagonist capsazepine. Data cluster analysis revealed that both AKU-005 and AEA largely increased long-term depression-like meningeal spiking activity upon paired KCl-induced spiking. CONCLUSIONS In the meninges, high anti-nociceptive 2-AG levels can tonically counteract meningeal signalling, whereas AEA can be engaged on demand by local depolarization. AEA-mediated anti-nociceptive effects through CB1 receptors have therapeutic potential. Together with previously detected MAGL activity in trigeminal ganglia, dual MAGL/FAAH inhibitor AKU-005 appears promising as migraine treatment.
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Affiliation(s)
- Adriana Della Pietra
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Georgii Krivoshein
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Konstantin Ivanov
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Raisa Giniatullina
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Henna-Kaisa Jyrkkänen
- Department of Neurosurgery, Kuopio University Hospital and Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Ville Leinonen
- Department of Neurosurgery, Kuopio University Hospital and Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Marko Lehtonen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Arn M J M van den Maagdenberg
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
- Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
| | - Juha Savinainen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Rashid Giniatullin
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland.
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Cravatt BF. Activity-based protein profiling - finding general solutions to specific problems. Isr J Chem 2023; 63:e202300029. [PMID: 37206575 PMCID: PMC10191372 DOI: 10.1002/ijch.202300029] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Indexed: 03/06/2023]
Abstract
In this retrospective/perspective, I will share thoughts on developing and applying the activity-based protein profiling (ABPP) technology, an endeavor that has consumed much of our lab's attention over our 25+ year existence. Before doing so, I first wish to thank the colleagues who so kindly contributed to this Special Issue. I am appreciative and humbled that they were willing to share their innovative and impactful science in this format.
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Affiliation(s)
- Benjamin F Cravatt
- The Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, La Jolla, CA 92037
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Li G, Peng X, Guo Y, Gong S, Cao S, Qiu F. Currently Available Strategies for Target Identification of Bioactive Natural Products. Front Chem 2021; 9:761609. [PMID: 34660543 PMCID: PMC8515416 DOI: 10.3389/fchem.2021.761609] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 09/20/2021] [Indexed: 01/04/2023] Open
Abstract
In recent years, biologically active natural products have gradually become important agents in the field of drug research and development because of their wide availability and variety. However, the target sites of many natural products are yet to be identified, which is a setback in the pharmaceutical industry and has seriously hindered the translation of research findings of these natural products as viable candidates for new drug exploitation. This review systematically describes the commonly used strategies for target identification via the application of probe and non-probe approaches. The merits and demerits of each method were summarized using recent examples, with the goal of comparing currently available methods and selecting the optimum techniques for identifying the targets of bioactive natural products.
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Affiliation(s)
- Gen Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xuling Peng
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yajing Guo
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shaoxuan Gong
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shijie Cao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Feng Qiu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Bononi G, Tuccinardi T, Rizzolio F, Granchi C. α/β-Hydrolase Domain (ABHD) Inhibitors as New Potential Therapeutic Options against Lipid-Related Diseases. J Med Chem 2021; 64:9759-9785. [PMID: 34213320 PMCID: PMC8389839 DOI: 10.1021/acs.jmedchem.1c00624] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Much of the experimental evidence in the literature has linked altered lipid metabolism to severe diseases such as cancer, obesity, cardiovascular pathologies, diabetes, and neurodegenerative diseases. Therefore, targeting key effectors of the dysregulated lipid metabolism may represent an effective strategy to counteract these pathological conditions. In this context, α/β-hydrolase domain (ABHD) enzymes represent an important and diversified family of proteins, which are involved in the complex environment of lipid signaling, metabolism, and regulation. Moreover, some members of the ABHD family play an important role in the endocannabinoid system, being designated to terminate the signaling of the key endocannabinoid regulator 2-arachidonoylglycerol. This Perspective summarizes the research progress in the development of ABHD inhibitors and modulators: design strategies, structure-activity relationships, action mechanisms, and biological studies of the main ABHD ligands will be highlighted.
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Affiliation(s)
- Giulia Bononi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Tiziano Tuccinardi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Flavio Rizzolio
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, 33081 Aviano, Italy.,Department of Molecular Sciences and Nanosystems, Ca' Foscari University, 30123 Venezia, Italy
| | - Carlotta Granchi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
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Della Pietra A, Giniatullin R, Savinainen JR. Distinct Activity of Endocannabinoid-Hydrolyzing Enzymes MAGL and FAAH in Key Regions of Peripheral and Central Nervous System Implicated in Migraine. Int J Mol Sci 2021; 22:ijms22031204. [PMID: 33530477 PMCID: PMC7865507 DOI: 10.3390/ijms22031204] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/20/2021] [Accepted: 01/24/2021] [Indexed: 02/06/2023] Open
Abstract
In migraine pain, cannabis has a promising analgesic action, which, however, is associated with side psychotropic effects. To overcome these adverse effects of exogenous cannabinoids, we propose migraine pain relief via activation of the endogenous cannabinoid system (ECS) by inhibiting enzymes degrading endocannabinoids. To provide a functional platform for such purpose in the peripheral and central parts of the rat nociceptive system relevant to migraine, we measured by activity-based protein profiling (ABPP) the activity of the main endocannabinoid-hydrolases, monoacylglycerol lipase (MAGL) and fatty acid amide hydrolase (FAAH). We found that in trigeminal ganglia, the MAGL activity was nine-fold higher than that of FAAH. MAGL activity exceeded FAAH activity also in DRG, spinal cord and brainstem. However, activities of MAGL and FAAH were comparably high in the cerebellum and cerebral cortex implicated in migraine aura. MAGL and FAAH activities were identified and blocked by the selective and potent inhibitors JJKK-048/KML29 and JZP327A, respectively. The high MAGL activity in trigeminal ganglia implicated in the generation of nociceptive signals suggests this part of ECS as a priority target for blocking peripheral mechanisms of migraine pain. In the CNS, both MAGL and FAAH represent potential targets for attenuation of migraine-related enhanced cortical excitability and pain transmission.
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Affiliation(s)
- Adriana Della Pietra
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
| | - Rashid Giniatullin
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
- Laboratory of Neurobiology, Kazan Federal University, 420008 Kazan, Russia
- Correspondence: (R.G.); (J.R.S.)
| | - Juha R. Savinainen
- Institute of Biomedicine, University of Eastern Finland, 70211 Kuopio, Finland
- Correspondence: (R.G.); (J.R.S.)
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Yoo W, Kim B, Jeon S, Kim KK, Kim TD. Identification, characterization, and immobilization of a novel YbfF esterase from Halomonas elongata. Int J Biol Macromol 2020; 165:1139-1148. [PMID: 33031847 DOI: 10.1016/j.ijbiomac.2020.09.247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/28/2020] [Accepted: 09/28/2020] [Indexed: 12/19/2022]
Abstract
The YbfF esterase family, which has a bifurcated binding pocket for diverse ligands, could serve as excellent biocatalysts in industrial and biotechnological applications. Here, the identification, characterization, and immobilization of a novel YbfF esterase (YbfFHalomonas elongata) from Halomonas elongata DSM 2581 is reported. Biochemical characterization of YbfF was carried out using activity staining, chromatographic analysis, kinetic analysis, activity assay, acetic acid release, and pH-indicator-based hydrolysis. YbfFH.elongata displayed broad substrate specificity, including that for p-nitrophenyl esters, glucose pentaacetate, tert-butyl acetate, and β-lactam-containing compounds, with high efficiency. Based on a homology model of YbfFH.elongata, Trp237 in the substrate-binding pocket, a critical residue for catalytic activity and substrate specificity was identified and characterized. Furthermore, crosslinked enzyme aggregates and nanoflower formation were explored to enhance the chemical stability and recyclability of YbfFH.elongata. The present study is the first report of a YbfF esterase from extremophiles, and explains its protein stability, catalytic activity, substrate specificities and diversities, kinetics, functional residues, amyloid formation, and immobilization.
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Affiliation(s)
- Wanki Yoo
- Department of Chemistry, Graduate School of Natural Science, Sookmyung Women's University, Seoul 04310, Republic of Korea; Department of Precision Medicine, School of Medicine, SungKyunKwan University, Suwon 16419, Republic of Korea
| | - Booyoung Kim
- Department of Chemistry, Graduate School of Natural Science, Sookmyung Women's University, Seoul 04310, Republic of Korea
| | - Sangeun Jeon
- Department of Chemistry, Graduate School of Natural Science, Sookmyung Women's University, Seoul 04310, Republic of Korea
| | - Kyeong Kyu Kim
- Department of Precision Medicine, School of Medicine, SungKyunKwan University, Suwon 16419, Republic of Korea
| | - T Doohun Kim
- Department of Chemistry, Graduate School of Natural Science, Sookmyung Women's University, Seoul 04310, Republic of Korea.
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Wu D, Wang D, Hong J. Effect of a Novel Alpha/Beta Hydrolase Domain Protein on Tolerance of K. marxianus to Lignocellulosic Biomass Derived Inhibitors. Front Bioeng Biotechnol 2020; 8:844. [PMID: 32850717 PMCID: PMC7396682 DOI: 10.3389/fbioe.2020.00844] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/30/2020] [Indexed: 01/12/2023] Open
Abstract
The multiple inhibitors tolerance of microorganism is important in bioconversion of lignocellulosic biomass which is a promising renewable and sustainable source for biofuels and other chemicals. The disruption of an unknown α/β hydrolase, which was termed KmYME and located in mitochondria in this study, resulted in the yeast more susceptible to lignocellulose-derived inhibitors, particularly to acetic acid, furfural and 5-HMF. The KmYME disrupted strain lost more mitochondrial membrane potential, showed increased plasma membrane permeability, severer redox ratio imbalance, and increased ROS accumulation, compared with those of the non-disrupted strain in the presence of the same inhibitors. The intracellular concentration of ATP, NAD and NADP in the KmYME disrupted strain was decreased. However, disruption of KmYME did not result in a significant change of gene expression at the transcriptional level. The KmYME possessed esterase/thioesterase activity which was necessary for the resistance to inhibitors. In addition, KmYME was also required for the resistance to other stresses including ethanol, temperature, and osmotic pressure. Disruption of two possible homologous genes in S. cerevisiae also reduced its tolerance to inhibitors.
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Affiliation(s)
- Dan Wu
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Dongmei Wang
- School of Life Sciences, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory for Physical Sciences at the Microscale, Hefei, China
| | - Jiong Hong
- School of Life Sciences, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory for Physical Sciences at the Microscale, Hefei, China
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ABHD11, a new diacylglycerol lipase involved in weight gain regulation. PLoS One 2020; 15:e0234780. [PMID: 32579589 PMCID: PMC7313976 DOI: 10.1371/journal.pone.0234780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/02/2020] [Indexed: 01/26/2023] Open
Abstract
Obesity epidemic continues to spread and obesity rates are increasing in the world. In addition to public health effort to reduce obesity, there is a need to better understand the underlying biology to enable more effective treatment and the discovery of new pharmacological agents. Abhydrolase domain-containing protein 11 (ABHD11) is a serine hydrolase enzyme, localized in mitochondria, that can synthesize the endocannabinoid 2-arachidonoyl glycerol (2AG) in vitro. In vivo preclinical studies demonstrated that knock-out ABHD11 mice have a similar 2AG level as WT mice and exhibit a lean metabolic phenotype. Such mice resist to weight gain in Diet Induced Obesity studies (DIO) and display normal biochemical plasma parameters. Metabolic and transcriptomic analyses on serum and tissues of ABHD11 KO mice from DIO studies show a modulation in bile salts associated with reduced fat intestinal absorption. These data suggest that modulating ABHD11 signaling pathway could be of therapeutic value for the treatment of metabolic disorders.
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Singha PK, Mäklin K, Vihavainen T, Laitinen T, Nevalainen TJ, Patil MR, Tonduru AK, Poso A, Laitinen JT, Savinainen JR. Evaluation of FASN inhibitors by a versatile toolkit reveals differences in pharmacology between human and rodent FASN preparations and in antiproliferative efficacy in vitro vs. in situ in human cancer cells. Eur J Pharm Sci 2020; 149:105321. [PMID: 32275951 DOI: 10.1016/j.ejps.2020.105321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/20/2020] [Accepted: 03/20/2020] [Indexed: 01/08/2023]
Abstract
De novo synthesis of fatty acids is essential to maintain intensive proliferation of cancer cells. Unlike normal cells that utilize food-derived circulating lipids for their fuel, cancer cells rely on heightened lipogenesis irrespective of exogenous lipid availability. Overexpression and activity of the multidomain enzyme fatty acid synthase (FASN) is crucial in supplying palmitate for protumorigenic activity. Therefore, FASN has been proposed as an attractive target for drug development. As an effort to set up an effective toolkit to study FASN inhibitors in human and rodent tissues, we validated activity-based protein profiling (ABPP) as a viable approach to unveil inhibitors targeting FASN thioesterase domain (FASN-TE). ABPP was combined with multi-well plate-assays designed for classical substrate-based FASN activity analysis together with powerful monitoring of cancer cell proliferation using IncuCyte® Live Cell Analyzing System. FASN-TE inhibitors were identified by competitive ABPP using HEK293 cell lysates in a screen of in-house compounds (200+) designed to target serine hydrolase (SH) family. The identified compounds were tested for their inhibitor potencies in vitro using a substrate-based activity assay monitoring FASN-dependent NADPH consumption in LNCaP prostate cancer cell preparation, in parallel with selected reference inhibitors, including orlistat (THL), GSK2194069, GSK837149A, platensimycin and BI-99179. LNCaP lysate supernatant was validated as a reliable native preparation to monitor FASN-dependent NADPH consumption as opposed to human glioma GAMG cells, whereas FASN enrichment was a prerequisite for accurate assays. While inhibitor pharmacology was identical between human prostate and glioma cancer cell FASN preparations, notable differences were revealed between human and rodent FASN preparations, especially for inhibitors targeting FASN-TE. ABPP combined with substrate-based assays facilitated identification of pan thiol-reactive inhibitor scaffolds, exemplified by the 1,2,4-thiadiazole moiety. Finally, selected compounds were evaluated for their antiproliferative efficacy in situ using GAMG cells. These studies revealed that while the tested compounds acted as potent FASN inhibitors in vitro, only a few showed antiproliferative efficacy in situ. To conclude, we describe a versatile toolkit to study FASN inhibitors in vitro and in situ using human cancer cells and reveal dramatic pharmacological differences between human and rodent FASN preparations.
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Affiliation(s)
- Prosanta K Singha
- School of Medicine Institute of Biomedicine Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland
| | - Kiira Mäklin
- School of Medicine Institute of Biomedicine Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland
| | - Taina Vihavainen
- School of Medicine Institute of Biomedicine Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland
| | - Tuomo Laitinen
- School of Pharmacy Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland
| | - Tapio J Nevalainen
- School of Pharmacy Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland
| | - Mahadeo R Patil
- School of Pharmacy Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland
| | - Arun K Tonduru
- School of Pharmacy Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland
| | - Antti Poso
- School of Pharmacy Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland; Department of Internal Medicine VIII, University Hospital Tuebingen, 72076, Tuebingen, Germany
| | - Jarmo T Laitinen
- School of Medicine Institute of Biomedicine Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland
| | - Juha R Savinainen
- School of Medicine Institute of Biomedicine Faculty of Health Sciences, University of Eastern Finland, 70211, Kuopio, Finland.
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High-Resolution Confocal Fluorescence Imaging of Serine Hydrolase Activity in Cryosections - Application to Glioma Brain Unveils Activity Hotspots Originating from Tumor-Associated Neutrophils. Biol Proced Online 2020; 22:6. [PMID: 32190011 PMCID: PMC7073015 DOI: 10.1186/s12575-020-00118-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/19/2020] [Indexed: 12/18/2022] Open
Abstract
Background Serine hydrolases (SHs) are a functionally diverse family of enzymes playing pivotal roles in health and disease and have emerged as important therapeutic targets in many clinical conditions. Activity-based protein profiling (ABPP) using fluorophosphonate (FP) probes has been a powerful chemoproteomic approach in studies unveiling roles of SHs in various biological systems. ABPP utilizes cell/tissue proteomes and features the FP-warhead, linked to a fluorescent reporter for in-gel fluorescence imaging or a biotin tag for streptavidin enrichment and LC-MS/MS-based target identification. Existing ABPP approaches characterize global SH activity based on mobility in gel or MS-based target identification and cannot reveal the identity of the cell-type responsible for an individual SH activity originating from complex proteomes. Results Here, by using an activity probe with broad reactivity towards the SH family, we advance the ABPP methodology to glioma brain cryosections, enabling for the first time high-resolution confocal fluorescence imaging of global SH activity in the tumor microenvironment. Tumor-associated cell types were identified by extensive immunohistochemistry on activity probe-labeled sections. Tissue-ABPP indicated heightened SH activity in glioma vs. normal brain and unveiled activity hotspots originating from tumor-associated neutrophils (TANs), rather than tumor-associated macrophages (TAMs). Thorough optimization and validation was provided by parallel gel-based ABPP combined with LC-MS/MS-based target verification. Conclusions Our study advances the ABPP methodology to tissue sections, enabling high-resolution confocal fluorescence imaging of global SH activity in anatomically preserved complex native cellular environment. To achieve global portrait of SH activity throughout the section, a probe with broad reactivity towards the SH family members was employed. As ABPP requires no a priori knowledge of the identity of the target, we envisage no imaginable reason why the presently described approach would not work for sections regardless of species and tissue source.
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