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Takahashi C, Chtcherbinine M, Huddle BC, Wilson MW, Emmel T, Hohlman RM, McGonigal S, Buckanovich RJ, Larsen SD, Hurley TD. Development of substituted benzimidazoles as inhibitors of human aldehyde dehydrogenase 1A isoenzymes. Chem Biol Interact 2024; 391:110910. [PMID: 38364885 PMCID: PMC11062403 DOI: 10.1016/j.cbi.2024.110910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/01/2024] [Accepted: 02/07/2024] [Indexed: 02/18/2024]
Abstract
Aldehyde dehydrogenase 1A (ALDH1A) isoforms may be a useful target for overcoming chemotherapy resistance in high-grade serous ovarian cancer (HGSOC) and other solid tumor cancers. However, as different cancers express different ALDH1A isoforms, isoform selective inhibitors may have a limited therapeutic scope. Furthermore, resistance to an ALDH1A isoform selective inhibitor could arise via induction of expression of other ALDH1A isoforms. As such, we have focused on the development of pan-ALDH1A inhibitors, rather than on ALDH1A isoform selective compounds. Herein, we report the development of a new group of pan-ALDH1A inhibitors to assess whether broad spectrum ALDH1A inhibition is an effective adjunct to chemotherapy in HGSOC. Optimization of the CM10 scaffold, aided by ALDH1A1 crystal structures, led to improved biochemical potencies, improved cellular efficacy as demonstrated by reduction in ALDEFLUOR signal in HGSOC cells, and substantial improvements in liver microsomal stability. Based on this work we identified two compounds 17 and 25 suitable for future in vivo proof of concept experiments.
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Affiliation(s)
- Cyrus Takahashi
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Mikhail Chtcherbinine
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Brandt C Huddle
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Michael W Wilson
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Timothy Emmel
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Robert M Hohlman
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Stacy McGonigal
- Department of Obstetrics, Gynecology, and Reproductive Sciences, the Magee-Women's Research Institute, Pittsburgh, PA 15213, USA
| | - Ronald J Buckanovich
- Department of Obstetrics, Gynecology, and Reproductive Sciences, the Magee-Women's Research Institute, Pittsburgh, PA 15213, USA; Division of Hematology-Oncology, Departments of Internal Medicine and Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh Medical Center and the Magee-Women's Research Institute, Pittsburgh, PA, 15213, USA
| | - Scott D Larsen
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Thomas D Hurley
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
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Narendra G, Raju B, Verma H, Kumar M, Jain SK, Tung GK, Thakur S, Kaur R, Kaur S, Sapra B, Silakari O. Scaffold hopping based designing of selective ALDH1A1 inhibitors to overcome cyclophosphamide resistance: synthesis and biological evaluation. RSC Med Chem 2024; 15:309-321. [PMID: 38283216 PMCID: PMC10809718 DOI: 10.1039/d3md00543g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 11/27/2023] [Indexed: 01/30/2024] Open
Abstract
Aldehyde dehydrogenase 1A1 (ALDH1A1) is an isoenzyme that catalyzes the conversion of aldehydes to acids. However, the overexpression of ALDH1A1 in a variety of malignancies is the major cause of resistance to an anti-cancer drug, cyclophosphamide (CP). CP is a prodrug that is initially converted into 4-hydroxycyclophosphamide and its tautomer aldophosphamide, in the liver. These compounds permeate into the cell and are converted as active metabolites, i.e., phosphoramide mustard (PM), through spontaneous beta-elimination. On the other hand, the conversion of CP to PM is diverted at the level of aldophosphamide by converting it into inactive carboxyphosphamide using ALDH1A1, which ultimately leads to high drug inactivation and CP resistance. Hence, in combination with our earlier work on the target of resistance, i.e., ALDH1A1, we hereby report selective ALDH1A1 inhibitors. Herein, we selected a lead molecule from our previous virtual screening and implemented scaffold hopping analysis to identify a novel scaffold that can act as an ALDH1A1 inhibitor. This results in the identification of various novel scaffolds. Among these, on the basis of synthetic feasibility, the benzimidazole scaffold was selected for the design of novel ALDH1A1 inhibitors, followed by machine learning-assisted structure-based virtual screening. Finally, the five best compounds were selected and synthesized. All synthesized compounds were evaluated using in vitro enzymatic assay against ALDH1A1, ALDH2, and ALDH3A1. The results disclosed that three molecules A1, A2, and A3 showed significant selective ALDH1A1 inhibitory potential with an IC50 value of 0.32 μM, 0.55 μM, and 1.63 μM, respectively, and none of the compounds exhibits potency towards the other two ALDH isoforms i.e. ALDH2 and ALDH3A1. Besides, the potent compounds (A1, A2, and A3) have been tested for in vitro cell line assay in combination with mafosfamide (analogue of CP) on two cell lines i.e. A549 and MIA-PaCa-2. All three compounds show significant potency to reverse mafosfamide resistance by inhibiting ALDH1A1 against these cell lines.
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Affiliation(s)
- Gera Narendra
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University Patiala Punjab 147002 India +91 17522 83075 +91 95015 42696
| | - Baddipadige Raju
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University Patiala Punjab 147002 India +91 17522 83075 +91 95015 42696
| | - Himanshu Verma
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University Patiala Punjab 147002 India +91 17522 83075 +91 95015 42696
| | - Manoj Kumar
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University Patiala Punjab 147002 India +91 17522 83075 +91 95015 42696
| | - Subheet Kumar Jain
- Department of Pharmaceutical Sciences, Guru Nanak Dev University Amritsar India
| | - Gurleen Kaur Tung
- Centre for Basic and Translational Research in Health Sciences, Guru Nanak Dev University Amritsar India
| | - Shubham Thakur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University Amritsar India
| | - Rasdeep Kaur
- Department of Botany and Environmental Sciences, Guru Nanak Dev University Amritsar India
| | - Satwinderjeet Kaur
- Department of Botany and Environmental Sciences, Guru Nanak Dev University Amritsar India
| | - Bharti Sapra
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University Patiala Punjab 147002 India +91 17522 83075 +91 95015 42696
| | - Om Silakari
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University Patiala Punjab 147002 India +91 17522 83075 +91 95015 42696
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Paul SK, Guendouzi A, Banerjee A, Guendouzi A, Haldar R. Identification of approved drugs with ALDH1A1 inhibitory potential aimed at enhancing chemotherapy sensitivity in cancer cells: an in-silico drug repurposing approach. J Biomol Struct Dyn 2024:1-15. [PMID: 38189344 DOI: 10.1080/07391102.2023.2300127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 12/21/2023] [Indexed: 01/09/2024]
Abstract
The aldehyde dehydrogenase 1A1 (ALDH1A1) also known as retinal dehydrogenase, is an enzyme normally involved in the cellular metabolism, development and detoxification processes in healthy cells. However, it's also considered a cancer stem cell marker and its high levels of expression in several cancers, including breast, lung, ovarian, and colon cancer have been associated with poor prognosis and resistance to chemotherapy. Given its crucial role in chemotherapy resistance by detoxification of chemotherapeutic drugs, ALDH1A1 has attracted significant research interest as a potential therapeutic target for cancer. Though a few synthetic inhibitors of ALDH1A1 have been synthesized and their efficacy has been proved in-vitro and in-vivo studies, none of them have passed clinical trials so far. In this scenario, we have performed an in-silico study to verify whether any of the already approved drugs used for various purposes has the ability to inhibit catalytic activity of ALDH1A1, so that they can be repurposed for cancer therapy. Keeping in mind the feasibility of repurposing in a larger population we have selected the approved drugs from five widely used drug categories such as antibiotic, antiviral, antifungal, anti diabetic and antihypertensive for screening. Computational techniques like molecular docking, molecular dynamics simulations and MM-PBSA binding energy calculation have been used in this study to screen the approved drugs. Based on the logical analysis of results, we propose that three drugs - telmisartan, irbesartan and maraviroc can inhibit the catalytic activity of ALDH1A1 and thus can be repurposed to increase chemotherapy sensitivity in cancer cells.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sanjay Kumar Paul
- Department of Physiology, University of Calcutta, Kolkata, India
- Department of Zoology, Rammohan College, Kolkata, West Bengal, India
| | - Abdelmadjid Guendouzi
- Center for Research in Pharmaceutical Sciences (CRSP), Constantine, Algeria
- Ecole Normale Supérieure ENS Constantine, Constantine, Algeria
| | | | | | - Rajen Haldar
- Department of Physiology, University of Calcutta, Kolkata, India
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4
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Gabizon R, Tivon B, Reddi RN, van den Oetelaar MCM, Amartely H, Cossar PJ, Ottmann C, London N. A simple method for developing lysine targeted covalent protein reagents. Nat Commun 2023; 14:7933. [PMID: 38040731 PMCID: PMC10692228 DOI: 10.1038/s41467-023-42632-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 10/16/2023] [Indexed: 12/03/2023] Open
Abstract
Peptide-based covalent probes can target shallow protein surfaces not typically addressable using small molecules, yet there is a need for versatile approaches to convert native peptide sequences into covalent binders that can target a broad range of residues. Here we report protein-based thio-methacrylate esters-electrophiles that can be installed easily on unprotected peptides and proteins via cysteine side chains, and react efficiently and selectively with cysteine and lysine side chains on the target. Methacrylate phosphopeptides derived from 14-3-3-binding proteins irreversibly label 14-3-3σ via either lysine or cysteine residues, depending on the position of the electrophile. Methacrylate peptides targeting a conserved lysine residue exhibit pan-isoform binding of 14-3-3 proteins both in lysates and in extracellular media. Finally, we apply this approach to develop protein-based covalent binders. A methacrylate-modified variant of the colicin E9 immunity protein irreversibly binds to the E9 DNAse, resulting in significantly higher thermal stability relative to the non-covalent complex. Our approach offers a simple and versatile route to convert peptides and proteins into potent covalent binders.
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Affiliation(s)
- Ronen Gabizon
- Department of Chemical and Structural Biology, The Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Barr Tivon
- Department of Chemical and Structural Biology, The Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Rambabu N Reddi
- Department of Chemical and Structural Biology, The Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Maxime C M van den Oetelaar
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600MB, Eindhoven, The Netherlands
| | - Hadar Amartely
- Wolfson Centre for Applied Structural Biology, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Peter J Cossar
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600MB, Eindhoven, The Netherlands
| | - Christian Ottmann
- Laboratory of Chemical Biology, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600MB, Eindhoven, The Netherlands
| | - Nir London
- Department of Chemical and Structural Biology, The Weizmann Institute of Science, Rehovot, 7610001, Israel.
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5
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Duan JJ, Cai J, Gao L, Yu SC. ALDEFLUOR activity, ALDH isoforms, and their clinical significance in cancers. J Enzyme Inhib Med Chem 2023; 38:2166035. [PMID: 36651035 PMCID: PMC9858439 DOI: 10.1080/14756366.2023.2166035] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
High aldehyde dehydrogenase (ALDH) activity is a metabolic feature of adult stem cells and various cancer stem cells (CSCs). The ALDEFLUOR system is currently the most commonly used method for evaluating ALDH enzyme activity in viable cells. This system is applied extensively in the isolation of normal stem cells and CSCs from heterogeneous cell populations. For many years, ALDH1A1 has been considered the most important subtype among the 19 ALDH family members in determining ALDEFLUOR activity. However, in recent years, studies of many types of normal and tumour tissues have demonstrated that other ALDH subtypes can also significantly influence ALDEFLUOR activity. In this article, we briefly review the relationships between various members of the ALDH family and ALDEFLUOR activity. The clinical significance of these ALDH isoforms in different cancers and possible directions for future studies are also summarised.
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Affiliation(s)
- Jiang-Jie Duan
- Department of Stem Cell and Regenerative Medicine, Southwest Hospital; Third Military Medical University (Army Medical University), Chongqing, China,International Joint Research Center for Precision Biotherapy, Ministry of Science and Technology, Chongqing, China,Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Chongqing, China,Ministry of Education, Key Laboratory of Cancer Immunopathology, Chongqing, China
| | - Jiao Cai
- Department of Stem Cell and Regenerative Medicine, Southwest Hospital; Third Military Medical University (Army Medical University), Chongqing, China,International Joint Research Center for Precision Biotherapy, Ministry of Science and Technology, Chongqing, China,Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Chongqing, China,Ministry of Education, Key Laboratory of Cancer Immunopathology, Chongqing, China
| | - Lei Gao
- Department of Hematology, Xinqiao Hospital; Third Medical University (Army Medical University), Chongqing, China
| | - Shi-Cang Yu
- Department of Stem Cell and Regenerative Medicine, Southwest Hospital; Third Military Medical University (Army Medical University), Chongqing, China,International Joint Research Center for Precision Biotherapy, Ministry of Science and Technology, Chongqing, China,Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Chongqing, China,Ministry of Education, Key Laboratory of Cancer Immunopathology, Chongqing, China,Jin-feng Laboratory, Chongqing, China,CONTACT Shi-Cang Yu Department of Stem Cell and Regenerative Medicine, Third Military Medical University (Army Medical University), Chongqing400038, China
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Zhang Z, Wang Y, Liang Z, Meng Z, Zhang X, Ma G, Chen Y, Zhang M, Su Y, Li Z, Liang Y, Niu H. Modification of lysine-260 2-hydroxyisobutyrylation destabilizes ALDH1A1 expression to regulate bladder cancer progression. iScience 2023; 26:108142. [PMID: 37867947 PMCID: PMC10585400 DOI: 10.1016/j.isci.2023.108142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/11/2023] [Accepted: 10/02/2023] [Indexed: 10/24/2023] Open
Abstract
ALDH1A1 is one of the classical stem cell markers for bladder cancer. Lysine 2-hydroxyisobutyrylation (Khib) is a newfound modification to modulate the protein expression, and the underlying mechanisms of how ALDH1A1 was regulated by Khib modification in bladder cancer remains unknown. Here, ALDH1A1 showed a decreased K260hib modification, as identified by protein modification omics in bladder cancer. Decreasing ALDH1A1 expression significantly suppressed the proliferation, migration and invasion of bladder cancer cells. Moreover, K260hib modification is responsible for the activity of ALDH1A1 in bladder cancer, which is regulated by HDAC2/3. Higher K260hib modification on ALDH1A1 promotes protein degradation through chaperone-mediated autophagy (CMA), and ALDH1A1 K260hib could sensitize bladder cancer cells to chemotherapeutic drugs. Higher ALDH1A1 expression with a lower K260hib modification indicates a poor prognosis in patients with bladder cancer. Overall, we demonstrated that K260hib of ALDH1A1 can be used as a potential therapeutic target for bladder cancer treatment.
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Affiliation(s)
- Zhilei Zhang
- Department of Urology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
- Key Laboratory, Department of Urology and Andrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yonghua Wang
- Department of Urology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Zhijuan Liang
- Key Laboratory, Department of Urology and Andrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Zhaoyuan Meng
- School of Basic Medicine, Qingdao University, No.308 Ningxia Road, Qingdao 266071, China
| | - Xiangyan Zhang
- Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Guofeng Ma
- Department of Urology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
- Key Laboratory, Department of Urology and Andrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yuanbin Chen
- Key Laboratory, Department of Urology and Andrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Mingxin Zhang
- Department of Urology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
| | - Yinjie Su
- Department of Urology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
- Key Laboratory, Department of Urology and Andrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Zhiqiang Li
- The Affiliated Hospital of Qingdao University and Biomedical Sciences Institute of Qingdao University (Qingdao Branch of SJTU Bio-X Institutes), Qingdao University, Qingdao 266071, China
| | - Ye Liang
- Key Laboratory, Department of Urology and Andrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Haitao Niu
- Department of Urology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao 266003, China
- Key Laboratory, Department of Urology and Andrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
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Kundu B, Iyer MR. A patent review on aldehyde dehydrogenase inhibitors: an overview of small molecule inhibitors from the last decade. Expert Opin Ther Pat 2023; 33:651-668. [PMID: 38037334 DOI: 10.1080/13543776.2023.2287515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 11/21/2023] [Indexed: 12/02/2023]
Abstract
INTRODUCTION Physiological and pathophysiological effects arising from detoxification of aldehydes in humans implicate the enzyme aldehyde dehydrogenase (ALDH) gene family comprising of 19 isoforms. The main function of this enzyme family is to metabolize reactive aldehydes to carboxylic acids. Dysregulation of ALDH activity has been associated with various diseases. Extensive research has since gone into studying ALHD isozymes, their structural biology and developing small-molecule inhibitors. Novel chemical strategies to enhance the selectivity of ALDH inhibitors have now appeared. AREAS COVERED A comprehensive review of patent literature related to aldehyde dehydrogenase inhibitors in the last decade and half (2007-2022) is provided. EXPERT OPINION Aldehyde dehydrogenase (ALDH) is an important enzyme that metabolizes reactive exogenous and endogenous aldehydes in the body through NAD(P)±dependent oxidation. Hence this family of enzymes possess important physiological as well as toxicological roles in human body. Significant efforts in the field have led to potent inhibitors with approved clinical agents for alcohol use disorder therapy. Further clinical translation of novel compounds targeting ALDH inhibition will validate the promised therapeutic potential in treating many human diseases.The scientific/patent literature has been searched on SciFinder-n, Reaxys, PubMed, Espacenet and Google Patents. The search terms used were 'ALDH inhibitors', 'Aldehyde Dehydrogenase Inhibitors'.
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Affiliation(s)
- Biswajit Kundu
- Section on Medicinal Chemistry, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA
| | - Malliga R Iyer
- Section on Medicinal Chemistry, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA
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8
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Su CC, Lyu M, Zhang Z, Miyagi M, Huang W, Taylor DJ, Yu EW. High-resolution structural-omics of human liver enzymes. Cell Rep 2023; 42:112609. [PMID: 37289586 PMCID: PMC10592444 DOI: 10.1016/j.celrep.2023.112609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/28/2023] [Accepted: 05/20/2023] [Indexed: 06/10/2023] Open
Abstract
We applied raw human liver microsome lysate to a holey carbon grid and used cryo-electron microscopy (cryo-EM) to define its composition. From this sample we identified and simultaneously determined high-resolution structural information for ten unique human liver enzymes involved in diverse cellular processes. Notably, we determined the structure of the endoplasmic bifunctional protein H6PD, where the N- and C-terminal domains independently possess glucose-6-phosphate dehydrogenase and 6-phosphogluconolactonase enzymatic activity, respectively. We also obtained the structure of heterodimeric human GANAB, an ER glycoprotein quality-control machinery that contains a catalytic α subunit and a noncatalytic β subunit. In addition, we observed a decameric peroxidase, PRDX4, which directly contacts a disulfide isomerase-related protein, ERp46. Structural data suggest that several glycosylations, bound endogenous compounds, and ions associate with these human liver enzymes. These results highlight the importance of cryo-EM in facilitating the elucidation of human organ proteomics at the atomic level.
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Affiliation(s)
- Chih-Chia Su
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Meinan Lyu
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Zhemin Zhang
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Masaru Miyagi
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Wei Huang
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Derek J Taylor
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Edward W Yu
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.
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Narendra G, Raju B, Verma H, Kumar M, Jain SK, Tung GK, Thakur S, Kaur R, Kaur S, Sapra B, Singh PK, Silakari O. Raloxifene and bazedoxifene as selective ALDH1A1 inhibitors to ameliorate cyclophosphamide resistance: A drug repurposing approach. Int J Biol Macromol 2023; 242:124749. [PMID: 37160174 DOI: 10.1016/j.ijbiomac.2023.124749] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/25/2023] [Accepted: 05/01/2023] [Indexed: 05/11/2023]
Abstract
Cyclophosphamide (CP) is one of the most widely used anticancer drugs for various malignancies. However, its long-term use leads to ALDH1A1-mediated inactivation and subsequent resistance which necessitates the development of potential ALDH1A1 inhibitors. Currently, ALDH1A1 inhibitors from different chemical classes have been reported, but these failed to reach the market due to safety and efficacy problems. Developing a new treatment from the ground requires a huge amount of time, effort, and money, therefore it is worthwhile to improve CP efficacy by proposing better adjuvants as ALDH1A1 inhibitors. Herein, the database constituting the FDA-approved drugs with well-established safety and toxicity profiles was screened through already reported machine learning models by our research group. This model is validated for discriminating the ALDH1A1 inhibitors and non-inhibitors. Virtual screening protocol (VS) from this model identified four FDA-approved drugs, raloxifene, bazedoxifene, avanafil, and betrixaban as selective ALDH1A1 inhibitors. The molecular docking, dynamics, and water swap analysis also suggested these drugs to be promising ALDH1A1 inhibitors which were further validated for their CP resistance reversal potential by in-vitro analysis. The in-vitro enzymatic assay results indicated that raloxifene and bazedoxifene selectively inhibited the ALDH1A1 enzyme with IC50 values of 2.35 and 4.41 μM respectively, whereas IC50 values of both the drugs against ALDH2 and ALDH3A1 was >100 μM. Additional in-vitro stu = dies with well-reported ALDH1A1 overexpressing A549 and MIA paCa-2 cell lines suggested that mafosfamide sensitivity was further ameliorated by the combination of both raloxifene and bazedoxifene. Collectively, in-silico and in-vitro studies indicate raloxifene and bazedoxifene act as promising adjuvants with CP that may improve the quality of treatment for cancer patients with minimal toxicities.
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Affiliation(s)
- Gera Narendra
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab 147002, India
| | - Baddipadige Raju
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab 147002, India
| | - Himanshu Verma
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab 147002, India
| | - Manoj Kumar
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab 147002, India
| | - Subheet Kumar Jain
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, India
| | - Gurleen Kaur Tung
- Centre for Basic and Translational Research in Health Sciences, Guru Nanak Dev University, Amritsar, India
| | - Shubham Thakur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, India
| | - Rasdeep Kaur
- Department of Botany and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Satwinderjeet Kaur
- Department of Botany and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Bharti Sapra
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab 147002, India
| | - Pankaj Kumar Singh
- Integrative Physiology and Pharmacology, Institute of Biomedicine, Faculty of Medicine, University of Turku, FI-20520 Turku, Finland
| | - Om Silakari
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab 147002, India.
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10
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Tringides ML, Zhang Z, Morgan CE, Su CC, Yu EW. A cryo-electron microscopic approach to elucidate protein structures from human brain microsomes. Life Sci Alliance 2023; 6:6/2/e202201724. [PMID: 36450447 PMCID: PMC9713474 DOI: 10.26508/lsa.202201724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/07/2022] [Accepted: 11/10/2022] [Indexed: 12/05/2022] Open
Abstract
We recently developed a "Build and Retrieve" cryo-electron microscopy (cryo-EM) methodology, which is capable of simultaneously producing near-atomic resolution cryo-EM maps for several individual proteins from a heterogeneous, multiprotein sample. Here we report the use of "Build and Retrieve" to define the composition of a raw human brain microsomal lysate. From this sample, we simultaneously identify and solve cryo-EM structures of five different brain enzymes whose functions affect neurotransmitter recycling, iron metabolism, glycolysis, axonal development, energy homeostasis, and retinoic acid biosynthesis. Interestingly, malfunction of these important proteins has been directly linked to several neurodegenerative disorders, such as Alzheimer's, Huntington's, and Parkinson's diseases. Our work underscores the importance of cryo-EM in facilitating tissue and organ proteomics at the atomic level.
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Affiliation(s)
- Marios L Tringides
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Zhemin Zhang
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Christopher E Morgan
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Chih-Chia Su
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Edward W Yu
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
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11
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Lyu M, Su CC, Miyagi M, Yu EW. Simultaneous solving high-resolution structures of various enzymes from human kidney microsomes. Life Sci Alliance 2023; 6:6/2/e202201580. [PMID: 36450445 PMCID: PMC9713302 DOI: 10.26508/lsa.202201580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 12/02/2022] Open
Abstract
The ability to investigate tissues and organs through an integrated systems biology approach has been thought to be unobtainable in the field of structural biology, where the techniques mainly focus on a particular biomacromolecule of interest. Here we report the use of cryo-electron microscopy (cryo-EM) to define the composition of a raw human kidney microsomal lysate. We simultaneously identify and solve cryo-EM structures of four distinct kidney enzymes whose functions have been linked to protein biosynthesis and quality control, biosynthesis of retinoic acid, gluconeogenesis and glycolysis, and the regulation and metabolism of amino acids. Interestingly, all four of these enzymes are directly linked to cellular processes that, when disrupted, can contribute to the onset and progression of diabetes. This work underscores the potential of cryo-EM to facilitate tissue and organ proteomics at the atomic level.
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Affiliation(s)
- Meinan Lyu
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Chih-Chia Su
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Masaru Miyagi
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Edward W Yu
- Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH, USA
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12
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Zhang X, Ouyang Z. Crystal structure of aldehyde dehydrogenase 1A1 from mouse. Biochem Biophys Res Commun 2022; 628:141-146. [DOI: 10.1016/j.bbrc.2022.08.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/05/2022] [Accepted: 08/19/2022] [Indexed: 11/02/2022]
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13
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Ma M, He W, Zhao K, Xue L, Xia S, Zhang B. Targeting aldehyde dehydrogenase for prostate cancer therapies. Front Oncol 2022; 12:1006340. [PMID: 36300093 PMCID: PMC9589344 DOI: 10.3389/fonc.2022.1006340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 09/26/2022] [Indexed: 11/25/2022] Open
Abstract
Prostate cancer (PCa) is the most common cancer in men in the United States. About 10 – 20% of PCa progress to castration-resistant PCa (CRPC), which is accompanied by metastasis and therapeutic resistance. Aldehyde dehydrogenase (ALDH) is famous as a marker of cancer stem-like cells in different cancer types, including PCa. Generally, ALDHs catalyze aldehyde oxidation into less toxic carboxylic acids and give cancers a survival advantage by reducing oxidative stress caused by aldehyde accumulation. In PCa, the expression of ALDHs is associated with a higher tumor stage and more lymph node metastasis. Functionally, increased ALDH activity makes PCa cells gain more capabilities in self-renewal and metastasis and reduces the sensitivity to castration and radiotherapy. Therefore, it is promising to target ALDH or ALDHhigh cells to eradicate PCa. However, challenges remain in moving the ALDH inhibitors to PCa therapy, potentially due to the toxicity of pan-ALDH inhibitors, the redundancy of ALDH isoforms, and the lack of explicit understanding of the metabolic signaling transduction details. For targeting PCa stem-like cells (PCSCs), different regulators have been revealed in ALDHhigh cells to control cell proliferation and tumorigenicity. ALDH rewires essential signaling transduction in PCa cells. It has been shown that ALDHs produce retinoic acid (RA), bind with androgen, and modulate diverse signaling. This review summarizes and discusses the pathways directly modulated by ALDHs, the crucial regulators that control the activities of ALDHhigh PCSCs, and the recent progress of ALDH targeted therapies in PCa. These efforts will provide insight into improving ALDH-targeted treatment.
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Affiliation(s)
| | | | | | | | - Siyuan Xia
- *Correspondence: Siyuan Xia, ; Baotong Zhang,
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14
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Muralikrishnan V, Fang F, Given TC, Podicheti R, Chtcherbinine M, Metcalfe TX, Sriramkumar S, O’Hagan HM, Hurley TD, Nephew KP. A Novel ALDH1A1 Inhibitor Blocks Platinum-Induced Senescence and Stemness in Ovarian Cancer. Cancers (Basel) 2022; 14:3437. [PMID: 35884498 PMCID: PMC9318275 DOI: 10.3390/cancers14143437] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/08/2022] [Accepted: 07/10/2022] [Indexed: 02/04/2023] Open
Abstract
Ovarian cancer is a deadly disease attributed to late-stage detection as well as recurrence and the development of chemoresistance. Ovarian cancer stem cells (OCSCs) are hypothesized to be largely responsible for the emergence of chemoresistant tumors. Although chemotherapy may initially succeed at decreasing the size and number of tumors, it leaves behind residual malignant OCSCs. In this study, we demonstrate that aldehyde dehydrogenase 1A1 (ALDH1A1) is essential for the survival of OCSCs. We identified a first-in-class ALDH1A1 inhibitor, compound 974, and used 974 as a tool to decipher the mechanism of stemness regulation by ALDH1A1. The treatment of OCSCs with 974 significantly inhibited ALDH activity, the expression of stemness genes, and spheroid and colony formation. An in vivo limiting dilution assay demonstrated that 974 significantly inhibited CSC frequency. A transcriptomic sequencing of cells treated with 974 revealed a significant downregulation of genes related to stemness and chemoresistance as well as senescence and the senescence-associated secretory phenotype (SASP). We confirmed that 974 inhibited the senescence and stemness induced by platinum-based chemotherapy in functional assays. Overall, these data establish that ALDH1A1 is essential for OCSC survival and that ALDH1A1 inhibition suppresses chemotherapy-induced senescence and stemness. Targeting ALDH1A1 using small-molecule inhibitors in combination with chemotherapy therefore presents a promising strategy to prevent ovarian cancer recurrence and has the potential for clinical translation.
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Affiliation(s)
- Vaishnavi Muralikrishnan
- Cell, Molecular and Cancer Biology Graduate Program, Medical Sciences Department, Indiana University School of Medicine, Bloomington, IN 47405, USA; (V.M.); (T.C.G.); (T.X.M.); (S.S.); (H.M.O.)
| | - Fang Fang
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
| | - Tyler C. Given
- Cell, Molecular and Cancer Biology Graduate Program, Medical Sciences Department, Indiana University School of Medicine, Bloomington, IN 47405, USA; (V.M.); (T.C.G.); (T.X.M.); (S.S.); (H.M.O.)
| | - Ram Podicheti
- Center for Genomics and Bioinformatics, Indiana University, Bloomington, IN 46202, USA;
| | - Mikhail Chtcherbinine
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
| | - Tara X. Metcalfe
- Cell, Molecular and Cancer Biology Graduate Program, Medical Sciences Department, Indiana University School of Medicine, Bloomington, IN 47405, USA; (V.M.); (T.C.G.); (T.X.M.); (S.S.); (H.M.O.)
| | - Shruthi Sriramkumar
- Cell, Molecular and Cancer Biology Graduate Program, Medical Sciences Department, Indiana University School of Medicine, Bloomington, IN 47405, USA; (V.M.); (T.C.G.); (T.X.M.); (S.S.); (H.M.O.)
| | - Heather M. O’Hagan
- Cell, Molecular and Cancer Biology Graduate Program, Medical Sciences Department, Indiana University School of Medicine, Bloomington, IN 47405, USA; (V.M.); (T.C.G.); (T.X.M.); (S.S.); (H.M.O.)
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indianapolis, IN 46202, USA
| | - Thomas D. Hurley
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
| | - Kenneth P. Nephew
- Cell, Molecular and Cancer Biology Graduate Program, Medical Sciences Department, Indiana University School of Medicine, Bloomington, IN 47405, USA; (V.M.); (T.C.G.); (T.X.M.); (S.S.); (H.M.O.)
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
- Department of Anatomy, Cell Biology and Physiology, Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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15
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Verma H, Narendra G, Raju B, Kumar M, Jain SK, Tung GK, Singh PK, Silakari O. 3D-QSAR and scaffold hopping based designing of benzo[d]ox-azol-2(3H)-one and 2-oxazolo[4,5-b]pyridin-2(3H)-one derivatives as selective aldehyde dehydrogenase 1A1 inhibitors: Synthesis and biological evaluation. Arch Pharm (Weinheim) 2022; 355:e2200108. [PMID: 35618489 DOI: 10.1002/ardp.202200108] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/26/2022] [Accepted: 05/02/2022] [Indexed: 01/16/2023]
Abstract
Aldehyde dehydrogenase 1 (ALDH1A1), an oxidoreductase class of enzymes, is overexpressed in various types of cancer cell lines and is the major cause of resistance to the Food and Drug Administration (FDA)-approved drug, cyclophosphamide (CP). In cancer conditions, CP undergoes a sequence of biotransformations to form an active metabolite, aldophosphamide, which further biotransforms to its putative cytotoxic metabolite, phosphoramide mustard. However, in resistant cancer conditions, aldophosphamide is converted into its inactive metabolite, carboxyphosphamide, via oxidation with ALDH1A1. Herein, to address the issue of ALDH1A1 mediated CP resistance, we report a series of benzo[d]oxazol-2(3H)-one and 2-oxazolo[4,5-b]pyridin-2(3H)-one derivatives as selective ALDH1A1 inhibitors. These inhibitors were designed using a validated 3D-quantitative structure activity relationship (3D-QSAR) model coupled with scaffold hopping. The 3D-QSAR model was developed using reported indole-2,3-diones based ALDH1A1 inhibitors, which provided field points in terms of electrostatic, van der Waals and hydrophobic potentials required for selectively inhibiting ALDH1A1. The most selective indole-2,3-diones-based compound, that is, cmp 3, was further considered for scaffold hopping. Two top-ranked bioisosteres, that is, benzo[d]oxazol-2(3H)-one and 2-oxazolo[4,5-b]pyridin-2(3H)-one, were selected for designing new inhibitors by considering the field pattern of 3D-QSAR. All designed molecules were mapped perfectly on the 3D-QSAR model and found to be predictive with good inhibitory potency (pIC50 range: 7.5-6.8). Molecular docking was carried out for each designed molecule to identify key interactions that are required for ALDH1A1 inhibition and to authenticate the 3D-QSAR result. The top five inhibitor-ALDH1A1 complexes were also submitted for molecular dynamics simulations to access their stability. In vitro enzyme assays of 21 compounds suggested that these compounds are selective toward ALDH1A1 over the other two isoforms, that is, ALDH2 and ALDH3A1. All the compounds were found to be at least three and two times more selective toward ALDH1A1 over ALDH2 and ALDH3A1, respectively. All the compounds showed an IC50 value in the range of 0.02-0.80 μM, which indicates the potential for these to be developed as adjuvant therapy for CP resistance.
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Affiliation(s)
- Himanshu Verma
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Gera Narendra
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Baddipadige Raju
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Manoj Kumar
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Subheet K Jain
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, India
| | - Gurleen K Tung
- Centre for Basic and Translational Research in Health Sciences, Guru Nanak Dev University, Amritsar, India
| | - Pankaj K Singh
- Faculty of Medicine, Integrative Physiology and Pharmacology, Institute of Biomedicine, University of Turku, Turku, Finland
| | - Om Silakari
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
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16
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Pereira R, Flaherty RL, Edwards RS, Greenwood HE, Shuhendler AJ, Witney TH. A prodrug strategy for the in vivo imaging of aldehyde dehydrogenase activity. RSC Chem Biol 2022; 3:561-570. [PMID: 35656483 PMCID: PMC9092432 DOI: 10.1039/d2cb00040g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 03/04/2022] [Indexed: 11/21/2022] Open
Abstract
Therapy resistance is one of the biggest challenges facing clinical oncology. Despite a revolution in new anti-cancer drugs targeting multiple components of the tumour microenvironment, acquired or innate resistance frequently blunts the efficacy of these treatments. Non-invasive identification of drug-resistant tumours will enable modification of the patient treatment pathway through the selection of appropriate second-line treatments. Here, we have designed a prodrug radiotracer for the non-invasive imaging of aldehyde dehydrogenase 1A1 (ALDH1A1) activity. Elevated ALDH1A1 activity is a marker of drug-resistant cancer cells, modelled here with matched cisplatin-sensitive and -resistant human SKOV3 ovarian cancer cells. The aromatic aldehyde of our prodrug radiotracer was intracellularly liberated by esterase cleavage of the geminal diacetate and specifically trapped by ALDH through its conversion to the charged carboxylic acid. Through this mechanism of action, ALDH-specific retention of our prodrug radiotracer in the drug-resistant tumour cells was twice as high as the drug-sensitive cells. Acylal masking of the aldehyde afforded a modest protection from oxidation in the blood, which was substantially improved in carrier-added experiments. In vivo positron emission tomography imaging of tumour-bearing mice produced high tumour-to-background images and radiotracer uptake in high ALDH-expressing organs but was unable to differentiate between drug-sensitive and drug-resistant tumours. Alternative strategies to protect the labile aldehyde are currently under investigation.
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Affiliation(s)
- Raul Pereira
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital London SE1 7EH UK +44 (0)20 7188 7188, ext. 883496
| | - Renée L Flaherty
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital London SE1 7EH UK +44 (0)20 7188 7188, ext. 883496
| | - Richard S Edwards
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital London SE1 7EH UK +44 (0)20 7188 7188, ext. 883496
| | - Hannah E Greenwood
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital London SE1 7EH UK +44 (0)20 7188 7188, ext. 883496
| | - Adam J Shuhendler
- Department of Chemistry & Biomolecular Sciences, University of Ottawa Ottawa ON Canada
- University of Ottawa Heart Institute Ottawa ON Canada
| | - Timothy H Witney
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital London SE1 7EH UK +44 (0)20 7188 7188, ext. 883496
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17
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Tian Q, Wu J, Xu H, Hu Z, Huo Y, Wang L. Cryo-EM structure of the fatty acid reductase LuxC-LuxE complex provides insights into bacterial bioluminescence. J Biol Chem 2022; 298:102006. [PMID: 35504354 PMCID: PMC9157457 DOI: 10.1016/j.jbc.2022.102006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 11/25/2022] Open
Abstract
The discovery of reduced flavin mononucleotide and fatty aldehydes as essential factors of light emission facilitated study of bacterial luminescence. Although the molecular mechanisms underlying bacterial luminescence have been studied for more than 60 years, the structure of the bacterial fatty acid reductase complex remains unclear. Here, we report the cryo-EM structure of the Photobacterium phosphoreum fatty acid reductase complex LuxC–LuxE to a resolution of 2.79 Å. We show that the active site Lys238/Arg355 pair of LuxE is >30 Å from the active site Cys296 of LuxC, implying that catalysis relies on a large conformational change. Furthermore, mutagenesis and biochemical experiments support that the L-shaped cleft inside LuxC plays an important role in substrate binding and reaction. We obtained a series of mutants with significantly improved activity as measured by in vitro bioluminescence assays and demonstrated that the double mutant W111A/F483K displayed the highest activity (370% of the WT). Our results indicated that the activity of LuxC significantly affects the bacterial bioluminescence reaction. Finally, we expressed this mutated lux operon in Escherichia coli but observed that the in vivo concentrations of ATP and NADPH limited the enzyme activity; thus, we conclude that the luminous intensity mainly depends on the level of metabolic energy.
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Affiliation(s)
- Qingwei Tian
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China; Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Jingting Wu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Haifeng Xu
- National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China; Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Yangao Huo
- National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
| | - Liyan Wang
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China.
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18
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Wang W, Wang J, Liu S, Ren Y, Wang J, Liu S, Cui W, Jia L, Tang X, Yang J, Wu C, Wang L. An EHMT2/NFYA-ALDH2 signaling axis modulates the RAF pathway to regulate paclitaxel resistance in lung cancer. Mol Cancer 2022; 21:106. [PMID: 35477569 PMCID: PMC9044593 DOI: 10.1186/s12943-022-01579-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/19/2022] [Indexed: 12/24/2022] Open
Abstract
Background Lung cancer is a kind of malignancy with high morbidity and mortality worldwide. Paclitaxel (PTX) is the main treatment for non-small cell lung cancer (NSCLC), and resistance to PTX seriously affects the survival of patients. However, the underlying mechanism and potential reversing strategy need to be further explored. Methods We identified ALDH2 as a PTX resistance-related gene using gene microarray analysis. Subsequently, a series of functional analysis in cell lines, patient samples and xenograft models were performed to explore the functional role, clinical significance and the aberrant regulation mechanism of ALDH2 in PTX resistance of NSCLC. Furthermore, the pharmacological agents targeting ALDH2 and epigenetic enzyme were used to investigate the diverse reversing strategy against PTX resistance. Results Upregulation of ALDH2 expression is highly associated with resistance to PTX using in vitro and in vivo analyses of NSCLC cells along with clinicopathological analyses of NSCLC patients. ALDH2-overexpressing NSCLC cells exhibited significantly reduced PTX sensitivity and increased biological characteristics of malignancy in vitro and tumor growth and metastasis in vivo. EHMT2 (euchromatic histone lysine methyltransferase 2) inhibition and NFYA (nuclear transcription factor Y subunit alpha) overexpression had a cooperative effect on the regulation of ALDH2. Mechanistically, ALDH2 overexpression activated the RAS/RAF oncogenic pathway. NSCLC/PTX cells re-acquired sensitivity to PTX in vivo and in vitro when ALDH2 was inhibited by pharmacological agents, including the ALDH2 inhibitors Daidzin (DZN)/Disulfiram (DSF) and JIB04, which reverses the effect of EHMT2. Conclusion Our findings suggest that ALDH2 status can help predict patient response to PTX therapy and ALDH2 inhibition may be a promising strategy to overcome PTX resistance in the clinic. Supplementary Information The online version contains supplementary material available at 10.1186/s12943-022-01579-9.
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Affiliation(s)
- Wenjing Wang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Jianmin Wang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Shuai Liu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Yong Ren
- Department of Pathology, General Hospital of Central Theater Command of People's Liberation Army, Wuhan, People's Republic of China
| | - Jingyu Wang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Sen Liu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Wei Cui
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Lina Jia
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Xing Tang
- Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Jingyu Yang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Chunfu Wu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China. .,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.
| | - Lihui Wang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, People's Republic of China. .,Benxi Institute of Pharmaceutical Research, Shenyang Pharmaceutical University, Shenyang, People's Republic of China.
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19
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Castellví A, Pequerul R, Barracco V, Juanhuix J, Parés X, Farrés J. Structural and biochemical evidence that ATP inhibits the cancer biomarker human aldehyde dehydrogenase 1A3. Commun Biol 2022; 5:354. [PMID: 35418200 PMCID: PMC9007972 DOI: 10.1038/s42003-022-03311-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 03/24/2022] [Indexed: 11/15/2022] Open
Abstract
Human aldehyde dehydrogenase (ALDH) participates in the oxidative stress response and retinoid metabolism, being involved in several diseases, including cancer, diabetes and obesity. The ALDH1A3 isoform has recently elicited wide interest because of its potential use as a cancer stem cell biomarker and drug target. We report high-resolution three-dimensional ALDH1A3 structures for the apo-enzyme, the NAD+ complex and a binary complex with ATP. Each subunit of the ALDH1A3-ATP complex contains one ATP molecule bound to the adenosine-binding pocket of the cofactor-binding site. The ATP complex also shows a molecule, putatively identified as a polyethylene glycol aldehyde, covalently bound to the active-site cysteine. This mimics the thioacyl-enzyme catalytic intermediate, which is trapped in a dead enzyme lacking an active cofactor. At physiological concentrations, ATP inhibits the dehydrogenase activity of ALDH1A3 and other isoforms, with a Ki value of 0.48 mM for ALDH1A3, showing a mixed inhibition type against NAD+. ATP also inhibits esterase activity in a concentration-dependent manner. The current ALDH1A3 structures at higher resolution will facilitate the rational design of potent and selective inhibitors. ATP binding to ALDH1A3 enables activity modulation by the energy status of the cell and metabolic reprogramming, which may be relevant in several disease conditions. Three X-ray structures are presented of human aldehyde dehydrogenase family 1 member A3 (ALDH1A3), a potential cancer stem cell biomarker (alone, with NAD+ and with ATP) and structure determination performed using molecular replacement.
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Affiliation(s)
- Albert Castellví
- Department of Biochemistry and Molecular Biology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Barcelona, Spain.,Alba Synchrotron, carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Barcelona, Spain
| | - Raquel Pequerul
- Department of Biochemistry and Molecular Biology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Barcelona, Spain
| | - Vito Barracco
- Department of Biochemistry and Molecular Biology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Barcelona, Spain
| | - Judith Juanhuix
- Alba Synchrotron, carrer de la Llum 2-26, 08290 Cerdanyola del Vallès, Barcelona, Spain
| | - Xavier Parés
- Department of Biochemistry and Molecular Biology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Barcelona, Spain
| | - Jaume Farrés
- Department of Biochemistry and Molecular Biology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Barcelona, Spain.
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20
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Zanoni M, Bravaccini S, Fabbri F, Arienti C. Emerging Roles of Aldehyde Dehydrogenase Isoforms in Anti-cancer Therapy Resistance. Front Med (Lausanne) 2022; 9:795762. [PMID: 35299840 PMCID: PMC8920988 DOI: 10.3389/fmed.2022.795762] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 02/10/2022] [Indexed: 12/19/2022] Open
Abstract
Aldehyde dehydrogenases (ALDHs) are a family of detoxifying enzymes often upregulated in cancer cells and associated with therapeutic resistance. In humans, the ALDH family comprises 19 isoenzymes active in the majority of mammalian tissues. Each ALDH isoform has a specific differential expression pattern and most of them have individual functional roles in cancer. ALDHs are overexpressed in subpopulations of cancer cells with stem-like features, where they are involved in several processes including cellular proliferation, differentiation, detoxification and survival, participating in lipids and amino acid metabolism and retinoic acid synthesis. In particular, ALDH enzymes protect cancer cells by metabolizing toxic aldehydes in less reactive and more soluble carboxylic acids. High metabolic activity as well as conventional anticancer therapies contribute to aldehyde accumulation, leading to DNA double strand breaks (DSB) through the generation of reactive oxygen species (ROS) and lipid peroxidation. ALDH overexpression is crucial not only for the survival of cancer stem cells but can also affect immune cells of the tumour microenvironment (TME). The reduction of ROS amount and the increase in retinoic acid signaling impairs immunogenic cell death (ICD) inducing the activation and stability of immunosuppressive regulatory T cells (Tregs). Dissecting the role of ALDH specific isoforms in the TME can open new scenarios in the cancer treatment. In this review, we summarize the current knowledge about the role of ALDH isoforms in solid tumors, in particular in association with therapy-resistance.
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Affiliation(s)
- Michele Zanoni
- Biosciences Laboratory,IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, Italy
| | - Sara Bravaccini
- Biosciences Laboratory,IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, Italy
| | - Francesco Fabbri
- Biosciences Laboratory,IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, Italy
| | - Chiara Arienti
- Biosciences Laboratory,IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, Italy
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21
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Llorach-Pares L, Nonell-Canals A, Avila C, Sanchez-Martinez M. Computer-Aided Drug Design (CADD) to De-Orphanize Marine Molecules: Finding Potential Therapeutic Agents for Neurodegenerative and Cardiovascular Diseases. Mar Drugs 2022; 20:53. [PMID: 35049908 PMCID: PMC8781171 DOI: 10.3390/md20010053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 12/24/2021] [Accepted: 12/27/2021] [Indexed: 11/30/2022] Open
Abstract
Computer-aided drug design (CADD) techniques allow the identification of compounds capable of modulating protein functions in pathogenesis-related pathways, which is a promising line on drug discovery. Marine natural products (MNPs) are considered a rich source of bioactive compounds, as the oceans are home to much of the planet's biodiversity. Biodiversity is directly related to chemodiversity, which can inspire new drug discoveries. Therefore, natural products (NPs) in general, and MNPs in particular, have been used for decades as a source of inspiration for the design of new drugs. However, NPs present both opportunities and challenges. These difficulties can be technical, such as the need to dive or trawl to collect the organisms possessing the compounds, or biological, due to their particular marine habitats and the fact that they can be uncultivable in the laboratory. For all these difficulties, the contributions of CADD can play a very relevant role in simplifying their study, since, for example, no biological sample is needed to carry out an in-silico analysis. Therefore, the amount of natural product that needs to be used in the entire preclinical and clinical study is significantly reduced. Here, we exemplify how this combination between CADD and MNPs can help unlock their therapeutic potential. In this study, using a set of marine invertebrate molecules, we elucidate their possible molecular targets and associated therapeutic potential, establishing a pipeline that can be replicated in future studies.
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Affiliation(s)
- Laura Llorach-Pares
- Mind the Byte S.L., 08028 Barcelona, Catalonia, Spain; (L.L.-P.); (A.N.-C.)
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology and Biodiversity Research Institute (IRBio), University of Barcelona, 08028 Barcelona, Catalonia, Spain;
| | | | - Conxita Avila
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology and Biodiversity Research Institute (IRBio), University of Barcelona, 08028 Barcelona, Catalonia, Spain;
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22
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Li J, Garavaglia S, Ye Z, Moretti A, Belyaeva OV, Beiser A, Ibrahim M, Wilk A, McClellan S, Klyuyeva AV, Goggans KR, Kedishvili NY, Salter EA, Wierzbicki A, Migaud ME, Mullett SJ, Yates NA, Camacho CJ, Rizzi M, Sobol RW. A specific inhibitor of ALDH1A3 regulates retinoic acid biosynthesis in glioma stem cells. Commun Biol 2021; 4:1420. [PMID: 34934174 PMCID: PMC8692581 DOI: 10.1038/s42003-021-02949-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 12/07/2021] [Indexed: 01/31/2023] Open
Abstract
Elevated aldehyde dehydrogenase (ALDH) activity correlates with poor outcome for many solid tumors as ALDHs may regulate cell proliferation and chemoresistance of cancer stem cells (CSCs). Accordingly, potent, and selective inhibitors of key ALDH enzymes may represent a novel CSC-directed treatment paradigm for ALDH+ cancer types. Of the many ALDH isoforms, we and others have implicated the elevated expression of ALDH1A3 in mesenchymal glioma stem cells (MES GSCs) as a target for the development of novel therapeutics. To this end, our structure of human ALDH1A3 combined with in silico modeling identifies a selective, active-site inhibitor of ALDH1A3. The lead compound, MCI-INI-3, is a selective competitive inhibitor of human ALDH1A3 and shows poor inhibitory effect on the structurally related isoform ALDH1A1. Mass spectrometry-based cellular thermal shift analysis reveals that ALDH1A3 is the primary binding protein for MCI-INI-3 in MES GSC lysates. The inhibitory effect of MCI-INI-3 on retinoic acid biosynthesis is comparable with that of ALDH1A3 knockout, suggesting that effective inhibition of ALDH1A3 is achieved with MCI-INI-3. Further development is warranted to characterize the role of ALDH1A3 and retinoic acid biosynthesis in glioma stem cell growth and differentiation.
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Affiliation(s)
- Jianfeng Li
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL, 36604, USA
| | - Silvia Garavaglia
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Zhaofeng Ye
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, 15261, USA
- School of Medicine, Tsinghua University, Beijing, China
| | - Andrea Moretti
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
- Structural Plant Biology Laboratory, Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Olga V Belyaeva
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Schools of Medicine and Dentistry, 720 20th Street South, Kaul 440B, Birmingham, AL, 35294, USA
| | - Alison Beiser
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL, 36604, USA
| | - Md Ibrahim
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL, 36604, USA
| | - Anna Wilk
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL, 36604, USA
| | - Steve McClellan
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Alla V Klyuyeva
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Schools of Medicine and Dentistry, 720 20th Street South, Kaul 440B, Birmingham, AL, 35294, USA
| | - Kelli R Goggans
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Schools of Medicine and Dentistry, 720 20th Street South, Kaul 440B, Birmingham, AL, 35294, USA
| | - Natalia Y Kedishvili
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Schools of Medicine and Dentistry, 720 20th Street South, Kaul 440B, Birmingham, AL, 35294, USA
| | - E Alan Salter
- Department of Chemistry, University of South Alabama, 6040 USA South Drive, Mobile, AL, 36688, USA
| | - Andrzej Wierzbicki
- Department of Chemistry, University of South Alabama, 6040 USA South Drive, Mobile, AL, 36688, USA
| | - Marie E Migaud
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL, 36604, USA
| | - Steven J Mullett
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Nathan A Yates
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Carlos J Camacho
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Menico Rizzi
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy.
| | - Robert W Sobol
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA.
- Department of Pharmacology, College of Medicine, University of South Alabama, Mobile, AL, 36604, USA.
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23
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Pattar SV, Mirjankar MR, Kulkarni S, Gai PB, Pujar NK, Premakshi HG, Mulla SI, Babu RL, Kamanavalli CM. Analysis of human aldehyde dehydrogenases (ALDH) gene expression pattern in breast cancer tissue samples: rutin-copper complex inhibit the breast cancer cell proliferation. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2021. [DOI: 10.1186/s43042-021-00143-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Higher aldehyde dehydrogenases (ALDH) activity is one of the important signatures of breast cancer appearance and has been associated with poor prognosis. ALDH1A3 has been over-expressed in breast cancer patients. This study aims to analyze gene expression patterns of 18 ALDH isozymes in breast cancer tissue samples. It is carried out using a chip-based microarray, next-generation DNA sequencing of ALDH2 gene following in silico study to identify the natural products which act as inhibitors for over-expressed ALDH isoforms. The synthesis of rutin-copper complex and cell viability assay is carried out on MDA-MB-468 cell line.
Results
ALDH1A3 and ALDH18A1 have shown the highest positive mean fold of variation; whereas, ALDH2 and ALDH1A2 have shown the highest negative mean fold variation. In silico studies revealed that rutin has the highest binding affinity with both ALDH1A3 and ALDH18A1 and supported with IC50 value of rutin against MDA-MB-468 cells (144.50 μg/ml). Chemically synthesized rutin-copper complex significantly lowered the IC50 value to 119.40 μg/ml. The next-generation sequencing study provides the novel single nucleotide polymorphism (SNP) from T to G in the ALDH2 gene.
Conclusion
The present study signifies that, along with ALDH1A3, ALDH18A1 also acts as a marker for breast cancer. Apart from that, inhibitors of ALDH1A3 and ALDH18A1 were attained. Perhaps the single nucleotide polymorphism (SNP) obtained during the mutation analysis may be the probable cause of the highest downregulation of ALDH2 in breast cancer.
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24
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Ma Z, Jiang L, Li B, Liang D, Feng Y, Liu L, Jiang C. Discovery of benzimidazole derivatives as potent and selective aldehyde dehydrogenase 1A1 (ALDH1A1) inhibitors with glucose consumption improving activity. Bioorg Med Chem 2021; 46:116352. [PMID: 34403955 DOI: 10.1016/j.bmc.2021.116352] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/26/2021] [Accepted: 07/30/2021] [Indexed: 02/08/2023]
Abstract
Aldehyde dehydrogenase 1A1 (ALDH1A1) plays vital physiological and toxicological functions in many areas, such as CNS, inflammation, metabolic disorders, and cancers. Overexpression of ALDH1A1 has been disclosed to play an important role in obesity, diabetes and other diseases, indicating the potential need for the identification and development of small molecule ALDH1A1 inhibitors. Herein, a series of benzimidazole derivatives was designed, synthesized and evaluated. Among them, compounds 21, 27, 29, 61 and 65 exhibited excellent inhibitory activity against ALDH1A1 with IC50 values in the low micromolar range and high selectivity over ALDH1A2, ALDH1A3, ALDH2 and ALDH3A1. Moreover, an in vitro study demonstrated that all five compounds effectively improved glucose consumption in HepG2 cells, of which, 61 and 65 at 10 µM produced nearly equal glucose consumption with positive control Metformin (Met) at 1 mM. Furthermore, 61 and 65 showed desirable metabolic stability in human liver microsomes. All these results suggest that 61 and 65 are suitable for further studies.
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Affiliation(s)
- Zonghui Ma
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China.
| | - Ling Jiang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China
| | - Bingyan Li
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China
| | - Dailin Liang
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China
| | - Yu Feng
- Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China
| | - Li Liu
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China.
| | - Cheng Jiang
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing 210009, China.
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Narendra G, Raju B, Verma H, Sapra B, Silakari O. Multiple machine learning models combined with virtual screening and molecular docking to identify selective human ALDH1A1 inhibitors. J Mol Graph Model 2021; 107:107950. [PMID: 34089986 DOI: 10.1016/j.jmgm.2021.107950] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 12/19/2022]
Abstract
Aldehyde dehydrogenases (ALDHs) are the enzymes of oxidoreductase family that are responsible for the aldehyde metabolism. The unbalanced expression of these enzymes may be associated with a variety of disease conditions including cancers. ALDH1A1 is one of the isoform of ALDHs majorly overexpressed in a variety of tumors and responsible for the anti-cancer drug resistance. This makes ALDH1A1 as a specific target to develop small molecule ALDH1A1 inhibitors for resistant cancer condition. Number of ALDH1A1 inhibitors have been developed and reported in the literature, but because of non-selectivity and inappropriate pharmacokinetic properties till now none of these have reached in the market for clinical use. Therefore, multiple machine learning models of different isoforms of ALDHs are integrated with in-silico techniques including virtual screening, docking, ADMET profiling, and MD simulation to identify selective ALDH1A1 inhibitors. Total ten selective ALDH1A1 inhibitors with diverse scaffolds and appropriate ADMET were identified that can be further developed as adjuvant therapy in cyclophosphamide and cisplatin resistance cancer.
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Affiliation(s)
- Gera Narendra
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Baddipadige Raju
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Himanshu Verma
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Bharti Sapra
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Om Silakari
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India.
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26
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Gardner SH, Reinhardt CJ, Chan J. Advances in Activity-Based Sensing Probes for Isoform-Selective Imaging of Enzymatic Activity. Angew Chem Int Ed Engl 2021; 60:5000-5009. [PMID: 32274846 PMCID: PMC7544620 DOI: 10.1002/anie.202003687] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Indexed: 12/12/2022]
Abstract
Until recently, there were no generalizable methods for assessing the effects of post-translational regulation on enzymatic activity. Activity-based sensing (ABS) has emerged as a powerful approach for monitoring small-molecule and enzyme activities within living systems. Initial examples of ABS were applied for measuring general enzymatic activity; however, a recent focus has been placed on increasing the selectivity to monitor a single enzyme or isoform. The highest degree of selectivity is required for differentiating between isoforms, where the targets display significant structural similarities as a result of a gene duplication or alternative splicing. This Minireview highlights key examples of small-molecule isoform-selective probes with a focus on the relevance of isoform differentiation, design strategies to achieve selectivity, and applications in basic biology or in the clinic.
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Affiliation(s)
- Sarah H Gardner
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Christopher J Reinhardt
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jefferson Chan
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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27
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Grimley E, Cole AJ, Luong TT, McGonigal SC, Sinno S, Yang D, Bernstein KA, Buckanovich RJ. Aldehyde dehydrogenase inhibitors promote DNA damage in ovarian cancer and synergize with ATM/ATR inhibitors. Am J Cancer Res 2021; 11:3540-3551. [PMID: 33664846 PMCID: PMC7914353 DOI: 10.7150/thno.51885] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 12/18/2020] [Indexed: 12/17/2022] Open
Abstract
Rationale: Aldehyde dehydrogenase (ALDH) enzymes are often upregulated in cancer cells and associated with therapeutic resistance. ALDH enzymes protect cells by metabolizing toxic aldehydes which can induce DNA double stand breaks (DSB). We recently identified a novel ALDH1A family inhibitor (ALDHi), 673A. We hypothesized that 673A, via inhibition of ALDH1A family members, could induce intracellular accumulation of genotoxic aldehydes to cause DSB and that ALDHi could synergize with inhibitors of the ATM and ATR, proteins which direct DSB repair. Methods: We used immunofluorescence to directly assess levels of the aldehyde 4-hydroxynonenal and comet assays to evaluate DSB. Western blot was used to evaluate activation of the DNA damage response pathways. Cell counts were performed in the presence of 673A and additional aldehydes or aldehyde scavengers. ALDH inhibition results were confirmed using ALDH1A3 CRISPR knockout. Synergy between 673A and ATM or ATR inhibitors was evaluated using the Chou-Talalay method and confirmed in vivo using cell line xenograft tumor studies. Results: The ALDHi 673A cellular accumulation of toxic aldehydes which induce DNA double strand breaks. This is exacerbated by addition of exogenous aldehydes such as vitamin-A (retinaldehyde) and ameliorated by aldehyde scavengers such as metformin and hydralazine. Importantly, ALDH1A3 knockout cells demonstrated increased sensitivity to ATM/ATR inhibitors. And, ALDHi synergized with inhibitors of ATM and ATR, master regulators of the DSB DNA damage response, both in vitro and in vivo. This synergy was evident in homologous recombination (HR) proficient cell lines. Conclusions: ALDHi can be used to induce DNA DSB in cancer cells and synergize with inhibitors the ATM/ATR pathway. Our data suggest a novel therapeutic approach to target HR proficient ovarian cancer cells.
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Li B, Yang K, Liang D, Jiang C, Ma Z. Discovery and development of selective aldehyde dehydrogenase 1A1 (ALDH1A1) inhibitors. Eur J Med Chem 2020; 209:112940. [PMID: 33328099 DOI: 10.1016/j.ejmech.2020.112940] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/29/2020] [Accepted: 10/11/2020] [Indexed: 12/24/2022]
Abstract
ALDH1A1, one important member of 19 ALDHs, can metabolize reactive aldehydes to their corresponding carboxylic acid derivatives and play important physiological and toxicological roles in many areas, including CNS, metabolic disorders, and cancers. Overexpression of ALDH1A1 correlates with poor prognosis and tumor aggressiveness, is associated with drug resistance in traditional chemotherapy for cancer treatment and contributes to obesity, diabetes, and inflammation. So, inhibition of ALDH1A1 may offer new therapeutic options for patients with cancer, obesity, diabetes, and inflammation. Up to now, many ALDH1A1 inhibitors with different scaffolds have been identified and developed as useful chemical tools for better understanding of the functions of ALDH1A1 in physiologic and pathophysiologic conditions. In this review, the advances in the discovery and development of selective ALDH1A1 inhibitors are summarized, and opportunities and challenges associated with this field are also discussed.
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Affiliation(s)
- Bingyan Li
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China
| | - Kang Yang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China
| | - Dailin Liang
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China
| | - Cheng Jiang
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China.
| | - Zonghui Ma
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China.
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29
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Gardner SH, Reinhardt CJ, Chan J. Fortschritte bei aktivitätsbasierten Sonden für die isoformselektive Bildgebung enzymatischer Aktivität. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003687] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sarah H. Gardner
- Department of Biochemistry University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Christopher J. Reinhardt
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Jefferson Chan
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
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30
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Verma H, Silakari O. Investigating the Role of Missense SNPs on ALDH 1A1 mediated pharmacokinetic resistance to cyclophosphamide. Comput Biol Med 2020; 125:103979. [PMID: 32877739 DOI: 10.1016/j.compbiomed.2020.103979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 12/18/2022]
Abstract
Cyclophosphamide (CP) is a well-known anti-cancer drug, which exerts its therapeutic effect by DNA cross-linking, both within and between DNA strands. Earlier, a single dose of CP was enough for an effective treatment however due to overexpression of ALDH 1A1 in cancer cells and consequent drug inactivation, the quality of treatment suffered a lot. Drug inactivation via Drug Metabolizing Enzyme (DME) like Aldehyde dehydrogenase 1A1 (ALDH 1A1) is one of the resistance mechanism which is least considered and somewhat overlooked. The current study focused on investigating the impact of missense SNPs on ALDH 1A1 mediated pharmacokinetic resistance to CP. To achieve this aim, we selected 14 missense SNPs from the large pool of SNPs database. The stability of the mutants corresponding to selected SNPs was then determined using web-based tools like I-Mutant, CUPSAT, Maestro-web, STRUM, Eris, SDM, DUET, I-Stable. The obtained results from the mentioned web tools were later validated by molecular dynamic simulations. Furthermore, to find out the optimal range in terms of geometrical parameters and binding affinity for a molecule to be a good substrate for ALDH 1A1, some well-reported substrates of ALDH1A1 were pooled from the literature. Subsequently, similar parameters were calculated for each aldophosphamide (Active metabolite of CP) - mutant complexes to determine if these parameters lie within the optimal range. Based on this analyses population which is most or least susceptible to resistance was suggested. Our results demonstrated that the population group corresponding to rs11554423 (Gly125Arg) and rs763363983 (Val460Leu) mutation may be least vulnerable to CP resistance. Whereas, the population corresponding to rs1049981 (Asn121Ser) and rs774967243 (Val295Leu) SNPs may be most vulnerable to CP resistance.
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Affiliation(s)
- Himanshu Verma
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
| | - Om Silakari
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India.
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31
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Affiliation(s)
- Matthew D. Lloyd
- Drug & Target Development, Department of Pharmacy & Pharmacology, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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32
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Quattrini L, Gelardi ELM, Petrarolo G, Colombo G, Ferraris DM, Picarazzi F, Rizzi M, Garavaglia S, La Motta C. Progress in the Field of Aldehyde Dehydrogenase Inhibitors: Novel Imidazo[1,2- a]pyridines against the 1A Family. ACS Med Chem Lett 2020; 11:963-970. [PMID: 32435412 DOI: 10.1021/acsmedchemlett.9b00686] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 03/25/2020] [Indexed: 02/07/2023] Open
Abstract
Members of the aldehyde dehydrogenase 1A family are commonly acknowledged as hallmarks of cancer stem cells, and their overexpression is significantly associated with poor prognosis in different types of malignancies. Accordingly, treatments targeting these enzymes may represent a successful strategy to fight cancer. In this work we describe a novel series of imidazo[1,2-a]pyridines, designed as aldehyde dehydrogenase inhibitors by means of a structure-based optimization of a previously developed lead. The novel compounds were evaluated in vitro for their activity and selectivity against the three isoforms of the ALDH1A family and investigated through crystallization and modeling studies for their ability to interact with the catalytic site of the 1A3 isoform. Compound 3f emerged as the first in class submicromolar competitive inhibitor of the target enzyme.
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Affiliation(s)
- Luca Quattrini
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | | | - Giovanni Petrarolo
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Giorgia Colombo
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio 6, 28100 Novara, Italy
| | - Davide Maria Ferraris
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio 6, 28100 Novara, Italy
| | - Francesca Picarazzi
- Department of Biotechnology, Chemistry and Pharmacy “Department of Excellence 2018-2022”, University of Siena, via Aldo Moro 2, 53100 Siena, Italy
| | - Menico Rizzi
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio 6, 28100 Novara, Italy
| | - Silvia Garavaglia
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio 6, 28100 Novara, Italy
| | - Concettina La Motta
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
- CISUP - Centre for Instrumentation Sharing - University of Pisa, Lungarno Pacinotti 43, 56126 Pisa, Italy
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33
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Quattrini L, Gelardi ELM, Coviello V, Sartini S, Ferraris DM, Mori M, Nakano I, Garavaglia S, La Motta C. Imidazo[1,2- a]pyridine Derivatives as Aldehyde Dehydrogenase Inhibitors: Novel Chemotypes to Target Glioblastoma Stem Cells. J Med Chem 2020; 63:4603-4616. [PMID: 32223240 DOI: 10.1021/acs.jmedchem.9b01910] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Glioblastoma multiforme (GBM) is the deadliest form of brain tumor. It is known for its ability to escape the therapeutic options available to date thanks to the presence of a subset of cells endowed with stem-like properties and ability to resist to cytotoxic treatments. As the cytosolic enzyme aldehyde dehydrogenase 1A3 turns out to be overexpressed in these kinds of cells, playing a key role for their vitality, treatments targeting this enzyme may represent a successful strategy to fight GBM. In this work, we describe a novel class of imidazo[1,2-a]pyridine derivatives as aldehyde dehydrogenase 1A3 inhibitors, reporting the evidence of their significance as novel drug candidates for the treatment of GBM. Besides showing an interesting functional profile, in terms of activity against the target enzyme and selectivity toward highly homologous isoenzymes, representative examples of the series also showed a nanomolar to picomolar efficacy against patient-derived GBM stem-like cells, thus proving the concept that targeting aldehyde dehydrogenase might represent a novel and promising way to combat GBM by striking its ability to divide immortally.
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Affiliation(s)
- Luca Quattrini
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | | | - Vito Coviello
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Stefania Sartini
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Davide Maria Ferraris
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio 6, 28100 Novara, Italy
| | - Mattia Mori
- Department of Biotechnology, Chemistry and Pharmacy "Department of Excellence 2018-2022", University of Siena, via Aldo Moro 2, 53100 Siena, Italy
| | - Ichiro Nakano
- Department of Neurosurgery, University of Alabama at Birmingham, WTI 401, 1824 Sixth Avenue South, Birmingham, Alabama 35233, United States
| | - Silvia Garavaglia
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Via Bovio 6, 28100 Novara, Italy
| | - Concettina La Motta
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
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Wang Y, Li PY, Zhang Y, Cao HY, Wang YJ, Li CY, Wang P, Su HN, Chen Y, Chen XL, Zhang YZ. 3,6-Anhydro-L-Galactose Dehydrogenase VvAHGD is a Member of a New Aldehyde Dehydrogenase Family and Catalyzes by a Novel Mechanism with Conformational Switch of Two Catalytic Residues Cysteine 282 and Glutamate 248. J Mol Biol 2020; 432:2186-2203. [PMID: 32087198 DOI: 10.1016/j.jmb.2020.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 02/05/2020] [Accepted: 02/06/2020] [Indexed: 12/26/2022]
Abstract
3,6-anhydro-α-L-galactose (L-AHG) is one of the main monosaccharide constituents of red macroalgae. In the recently discovered bacterial L-AHG catabolic pathway, L-AHG is first oxidized by a NAD(P)+-dependent dehydrogenase (AHGD), which is a key step of this pathway. However, the catalytic mechanism(s) of AHGDs is still unclear. Here, we identified and characterized an AHGD from marine bacterium Vibrio variabilis JCM 19239 (VvAHGD). The NADP+-dependent VvAHGD could efficiently oxidize L-AHG. Phylogenetic analysis suggested that VvAHGD and its homologs represent a new aldehyde dehydrogenase (ALDH) family with different substrate preferences from reported ALDH families, named the L-AHGDH family. To explain the catalytic mechanism of VvAHGD, we solved the structures of VvAHGD in the apo form and complex with NADP+ and modeled its structure with L-AHG. Based on structural, mutational, and biochemical analyses, the cofactor channel and the substrate channel of VvAHGD are identified, and the key residues involved in the binding of NADP+ and L-AHG and the catalysis are revealed. VvAHGD performs catalysis by controlling the consecutive connection and interruption of the cofactor channel and the substrate channel via the conformational changes of its two catalytic residues Cys282 and Glu248. Comparative analyses of structures and enzyme kinetics revealed that differences in the substrate channels (in shape, size, electrostatic surface, and residue composition) lead to the different substrate preferences of VvAHGD from other ALDHs. This study on VvAHGD sheds light on the diversified catalytic mechanisms and evolution of NAD(P)+-dependent ALDHs.
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Affiliation(s)
- Yue Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Ping-Yi Li
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Yi Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Hai-Yan Cao
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Yan-Jun Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Chun-Yang Li
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China
| | - Peng Wang
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, 266003, China
| | - Hai-Nan Su
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Yin Chen
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, 266003, China; School of Life Sciences, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
| | - Yu-Zhong Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China; College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, 266003, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
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Heimann AS, Giardini AC, Sant'Anna MB, Dos Santos NB, Gewehr MCF, Munhoz CD, Castro LM, Picolo G, Remer RA, Ferro ES. NFKF is a synthetic fragment derived from rat hemopressin that protects mice from neurodegeneration. Neurosci Lett 2020; 721:134765. [PMID: 32004656 DOI: 10.1016/j.neulet.2020.134765] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/13/2020] [Accepted: 01/16/2020] [Indexed: 12/20/2022]
Abstract
Previous studies suggested the pharmacological potential of rat hemopressin (PVNFKFLSH) and its shorter synthetic peptide NFKF, to protect from pilocarpine-induced seizures in mice. Orally administered NFKF was shown to be hundred times more potent than cannabidiol in delaying the first seizure induced by pilocarpine in mice. Here, using an experimental autoimmune encephalomyelitis (EAE) model of multiple sclerosis we have shown that C57BL/6 J mice orally administrated with NFKF (500 μg/kg) presented better EAE clinical scores and improved locomotor activity compared to saline administrated control mice. NFKF blocked the production of IL-1beta and IL-6, and has high scores binding cannabinoid type 2 receptors. Therefore, NFKF is an exciting new possibility to neurodegenerative diseases therapeutics.
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Affiliation(s)
| | - A C Giardini
- Special Laboratory of Pain and Signaling, Butantan Institute, São Paulo, 05503-900, Brazil
| | - M B Sant'Anna
- Special Laboratory of Pain and Signaling, Butantan Institute, São Paulo, 05503-900, Brazil
| | - Nilton B Dos Santos
- Department of Pharmacology, Biomedical Sciences Institute, University of São Paulo, 05508-900, São Paulo, Brazil
| | - Mayara C F Gewehr
- Department of Pharmacology, Biomedical Sciences Institute, University of São Paulo, 05508-900, São Paulo, Brazil
| | - Carolina D Munhoz
- Department of Pharmacology, Biomedical Sciences Institute, University of São Paulo, 05508-900, São Paulo, Brazil
| | - Leandro M Castro
- Biosciences Institute, São Paulo State University, 11330-900, São Vicente, Brazil
| | - Gisele Picolo
- Special Laboratory of Pain and Signaling, Butantan Institute, São Paulo, 05503-900, Brazil
| | | | - Emer S Ferro
- Department of Pharmacology, Biomedical Sciences Institute, University of São Paulo, 05508-900, São Paulo, Brazil.
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Zhang Y, Wang M, Lin H. A Regulatory Cysteine Residue Mediates Reversible Inactivation of NAD +-Dependent Aldehyde Dehydrogenases to Promote Oxidative Stress Response. ACS Chem Biol 2020; 15:28-32. [PMID: 31820916 DOI: 10.1021/acschembio.9b00662] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Aldehyde dehydrogenases (ALDHs) are a large family of enzymes that oxidize aldehydes into carboxylic acids. All ALDHs have a conserved catalytic cysteine residue but different cofactor preferences for NAD+ or NADP+. We discovered a CC motif composed of the catalytic and an adjacent cysteine, which are prone to disulfide bond formation under oxidative stress. This facilitates rapid detection of and response to oxidants, as well as protects the catalytic cysteine from overoxidation into irreversible products. In ALDHs, the CC motif only exists in NAD+-dependent ones, which leads to selective inhibition of NAD+-dependent ALDHs under oxidative stress, diverting carbon sources to the NADPH producing ALDHs. This alleviates the oxidative stress and promotes cell survival. Our findings revealed a novel regulatory mechanism for ALDHs that functions in the oxidative stress response. Many enzymes with catalytic cysteine residues have proximal cysteine, suggesting that such a regulatory mechanism may be general.
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Affiliation(s)
- Yugang Zhang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Miao Wang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Hening Lin
- Howard Hughes Medical Institute; Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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Pequerul R, Vera J, Giménez-Dejoz J, Crespo I, Coines J, Porté S, Rovira C, Parés X, Farrés J. Structural and kinetic features of aldehyde dehydrogenase 1A (ALDH1A) subfamily members, cancer stem cell markers active in retinoic acid biosynthesis. Arch Biochem Biophys 2020; 681:108256. [PMID: 31923393 DOI: 10.1016/j.abb.2020.108256] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/01/2020] [Accepted: 01/02/2020] [Indexed: 11/30/2022]
Abstract
Aldehyde dehydrogenases catalyze the NAD(P)+-dependent oxidation of aldehydes to their corresponding carboxylic acids. The three-dimensional structures of the human ALDH1A enzymes were recently obtained, while a complete kinetic characterization of them, under the same experimental conditions, is lacking. We show that the three enzymes, ALDH1A1, ALDH1A2 and ALDH1A3, have similar topologies, although with decreasing volumes in their substrate-binding pockets. The activity with aliphatic and retinoid aldehydes was characterized side-by-side, using an improved HPLC-based method for retinaldehyde. Hexanal was the most efficient substrate. ALDH1A1 displayed lower Km values with hexanal, trans-2-hexenal and citral, compared to ALDH1A2 and ALDH1A3. ALDH1A2 was the best enzyme for the lipid peroxidation product, 4-hydroxy-2-nonenal, in terms of kcat/Km. The catalytic efficiency towards all-trans and 9-cis-retinaldehyde was in general lower than for alkanals and alkenals. ALDH1A2 and ALDH1A3 showed higher catalytic efficiency for all-trans-retinaldehyde. The lower specificity of ALDH1A3 for 9-cis-retinaldehyde against the all-trans- isomer might be related to the smaller volume of its substrate-binding pocket. Magnesium inhibited ALDH1A1 and ALDH1A2, while it activated ALDH1A3, which is consistent with cofactor dissociation being the rate-limiting step for ALDH1A1 and ALDH1A2, and deacylation for ALDH1A3, with hexanal as a substrate. We mutated both ALDH1A1 (L114P) and ALDH1A2 (N475G, A476V, L477V, N478S) to mimic their counterpart substrate-binding pockets. ALDH1A1 specificity for citral was traced to residue 114 and to residues 458 to 461. Regarding retinaldehyde, the mutants did not show significant differences with their respective wild-type forms, suggesting that the mutated residues are not critical for retinoid specificity.
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Affiliation(s)
- Raquel Pequerul
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - Javier Vera
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - Joan Giménez-Dejoz
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - Isidro Crespo
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - Joan Coines
- Department of Inorganic and Organic Chemistry, Universitat de Barcelona, E-08028, Barcelona, Spain
| | - Sergio Porté
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - Carme Rovira
- Department of Inorganic and Organic Chemistry, Universitat de Barcelona, E-08028, Barcelona, Spain
| | - Xavier Parés
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - Jaume Farrés
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain.
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Caldas-Lopes E, Gomez-Arteaga A, Guzman ML. Approaches to Targeting Cancer Stem Cells in Solid Tumors. Curr Stem Cell Res Ther 2019; 14:421-427. [PMID: 30806324 DOI: 10.2174/1574888x14666190222164429] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/08/2018] [Accepted: 01/20/2019] [Indexed: 12/11/2022]
Abstract
CSCs are a population of self-renewing and tumor repopulating cells that have been observed in hematologic and solid tumors and their presence contributes to the development of drug resistance. The failure to eliminate CSCs with conventional therapy is one of major obstacles in the successful treatment of cancer. Several mechanisms have been described to contribute to CSCs chemoresistance properties that include the adoption of drug-efflux pumps, drug detoxification pathways, changes in metabolism, improved DNA repair mechanisms, and deregulated survival and pro-apoptotic pathways. Thus, CSCs are therefore an attractive target to develop new anti-cancer therapies.
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Affiliation(s)
- Eloisi Caldas-Lopes
- Division of Hematology Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Alexandra Gomez-Arteaga
- Division of Hematology Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Monica L Guzman
- Division of Hematology Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY, United States.,Department of Pharmacology, Weill Cornell Medicine, New York, NY, United States
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39
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Liang D, Fan Y, Yang Z, Zhang Z, Liu M, Liu L, Jiang C. Discovery of coumarin-based selective aldehyde dehydrogenase 1A1 inhibitors with glucose metabolism improving activity. Eur J Med Chem 2019; 187:111923. [PMID: 31816557 DOI: 10.1016/j.ejmech.2019.111923] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 11/28/2019] [Accepted: 11/28/2019] [Indexed: 02/06/2023]
Abstract
Overexpression of aldehyde dehydrogenase 1A1 (ALDH1A1) is associated with the occurrence and development of obesity and insulin resistance. Herein, a series of coumarin-based ALDH1A1 inhibitors were designed, synthesized and evaluated. Among them, compounds 10, 14 and 26 exhibited potent inhibitory activity against ALDH1A1 and high selectivity over ALDH1A2, ALDH1A3, ALDH2 and ALDH3A1. Optimized compound 10 showed markedly improved pharmacokinetic characters and ADME profiles comparing to the lead compound 1. In vitro study demonstrated that 10 alleviated palmitic acid-induced impairment of glucose consumption in HepG2 cells.
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Affiliation(s)
- Dailin Liang
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China
| | - Yazhou Fan
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China
| | - Zhou Yang
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China
| | - Zhenguo Zhang
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China
| | - Meiyang Liu
- Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China
| | - Li Liu
- Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China.
| | - Cheng Jiang
- Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China; Department of Medicinal Chemistry, China Pharmaceutical University, Tongjiaxiang 24, Nanjing, 210009, China.
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40
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Dinavahi SS, Bazewicz CG, Gowda R, Robertson GP. Aldehyde Dehydrogenase Inhibitors for Cancer Therapeutics. Trends Pharmacol Sci 2019; 40:774-789. [DOI: 10.1016/j.tips.2019.08.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 07/29/2019] [Accepted: 08/08/2019] [Indexed: 02/07/2023]
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41
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Verma H, Singh Bahia M, Choudhary S, Kumar Singh P, Silakari O. Drug metabolizing enzymes-associated chemo resistance and strategies to overcome it. Drug Metab Rev 2019; 51:196-223. [DOI: 10.1080/03602532.2019.1632886] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Himanshu Verma
- MolecularModelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | | | - Shalki Choudhary
- MolecularModelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Pankaj Kumar Singh
- MolecularModelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Om Silakari
- MolecularModelling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
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42
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Chefetz I, Grimley E, Yang K, Hong L, Vinogradova EV, Suciu R, Kovalenko I, Karnak D, Morgan CA, Chtcherbinine M, Buchman C, Huddle B, Barraza S, Morgan M, Bernstein KA, Yoon E, Lombard DB, Bild A, Mehta G, Romero I, Chiang CY, Landen C, Cravatt B, Hurley TD, Larsen SD, Buckanovich RJ. A Pan-ALDH1A Inhibitor Induces Necroptosis in Ovarian Cancer Stem-like Cells. Cell Rep 2019; 26:3061-3075.e6. [PMID: 30865894 PMCID: PMC7061440 DOI: 10.1016/j.celrep.2019.02.032] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 01/19/2019] [Accepted: 02/07/2019] [Indexed: 12/15/2022] Open
Abstract
Ovarian cancer is typified by the development of chemotherapy resistance. Chemotherapy resistance is associated with high aldehyde dehydrogenase (ALDH) enzymatic activity, increased cancer "stemness," and expression of the stem cell marker CD133. As such, ALDH activity has been proposed as a therapeutic target. Although it remains controversial which of the 19 ALDH family members drive chemotherapy resistance, ALDH1A family members have been primarily linked with chemotherapy resistant and stemness. We identified two ALDH1A family selective inhibitors (ALDH1Ai). ALDH1Ai preferentially kills CD133+ ovarian cancer stem-like cells (CSCs). ALDH1Ai induce necroptotic CSC death, mediated, in part, by the induction of mitochondrial uncoupling proteins and reduction in oxidative phosphorylation. ALDH1Ai is highly synergistic with chemotherapy, reducing tumor initiation capacity and increasing tumor eradication in vivo. These studies link ALDH1A with necroptosis and confirm the family as a critical therapeutic target to overcome chemotherapy resistance and improve patient outcomes.
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Affiliation(s)
- Ilana Chefetz
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Edward Grimley
- Division of Hematology-Oncology, Department of Internal Medicine, Division of Gynecology-Oncology, Department of Obstetrics and Gynecology, and UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kun Yang
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Linda Hong
- Division of Gynecology-Oncology, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA
| | | | - Radu Suciu
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Ilya Kovalenko
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - David Karnak
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Cynthia A Morgan
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Mikhail Chtcherbinine
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Cameron Buchman
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Brandt Huddle
- Vahlteich Medicinal Chemistry Core, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Scott Barraza
- Vahlteich Medicinal Chemistry Core, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Meredith Morgan
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Kara A Bernstein
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, UPMC Hillman Cancer Center, Pittsburgh, PA, USA
| | - Euisik Yoon
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
| | - David B Lombard
- Department of Pathology and Institute of Gerontology, University of Michigan, Ann Arbor, MI, USA
| | - Andrea Bild
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT, USA
| | - Geeta Mehta
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Iris Romero
- Department of Obstetrics and Gynecology, Section of Gynecologic Oncology, University of Chicago, Chicago, IL, USA
| | - Chun-Yi Chiang
- Department of Obstetrics and Gynecology, Section of Gynecologic Oncology, University of Chicago, Chicago, IL, USA
| | - Charles Landen
- Department of Obstetrics and Gynecology, School of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Benjamin Cravatt
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Thomas D Hurley
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Scott D Larsen
- Vahlteich Medicinal Chemistry Core, College of Pharmacy, University of Michigan, Ann Arbor, MI, USA
| | - Ronald J Buckanovich
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA; Division of Gynecology-Oncology, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA; Division of Hematology-Oncology, Department of Internal Medicine, Division of Gynecology-Oncology, Department of Obstetrics and Gynecology, and UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, USA; Magee-Womens Research Institute, Pittsburgh, PA, USA.
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43
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Liu LK, Tanner JJ. Crystal Structure of Aldehyde Dehydrogenase 16 Reveals Trans-Hierarchical Structural Similarity and a New Dimer. J Mol Biol 2018; 431:524-541. [PMID: 30529746 DOI: 10.1016/j.jmb.2018.11.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 12/24/2022]
Abstract
The aldehyde dehydrogenase (ALDH) superfamily is a vast group of enzymes that catalyze the NAD+-dependent oxidation of aldehydes to carboxylic acids. ALDH16 is perhaps the most enigmatic member of the superfamily, owing to its extra C-terminal domain of unknown function and the absence of the essential catalytic cysteine residue in certain non-bacterial ALDH16 sequences. Herein we report the first production of recombinant ALDH16, the first biochemical characterization of ALDH16, and the first crystal structure of ALDH16. Recombinant expression systems were generated for the bacterial ALDH16 from Loktanella sp. and human ALDH16A1. Four high-resolution crystal structures of Loktanella ALDH16 were determined. Loktanella ALDH16 is found to be a bona fide enzyme, exhibiting NAD+-binding, ALDH activity, and esterase activity. In contrast, human ALDH16A1 apparently lacks measurable aldehyde oxidation activity, suggesting that it is a pseudoenzyme, consistent with the absence of the catalytic Cys in its sequence. The fold of ALDH16 comprises three domains: NAD+-binding, catalytic, and C-terminal. The latter is unique to ALDH16 and features a Rossmann fold connected to a protruding β-flap. The tertiary structural interactions of the C-terminal domain mimic the quaternary structural interactions of the classic ALDH superfamily dimer, a phenomenon we call "trans-hierarchical structural similarity." ALDH16 forms a unique dimer in solution, which mimics the classic ALDH superfamily dimer-of-dimer tetramer. Small-angle X-ray scattering shows that human ALDH16A1 has the same dimeric structure and fold as Loktanella ALDH16. We suggest that the Loktanella ALDH16 structure may be considered to be the archetype of the ALDH16 family.
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Affiliation(s)
- Li-Kai Liu
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA
| | - John J Tanner
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA; Department of Chemistry, University of Missouri, Columbia, MO 65211, USA.
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44
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Korasick DA, White TA, Chakravarthy S, Tanner JJ. NAD + promotes assembly of the active tetramer of aldehyde dehydrogenase 7A1. FEBS Lett 2018; 592:3229-3238. [PMID: 30184263 PMCID: PMC6188814 DOI: 10.1002/1873-3468.13238] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/24/2018] [Accepted: 08/28/2018] [Indexed: 02/04/2023]
Abstract
Nicotinamide adenine dinucleotide (NAD) is the redox cofactor of many enzymes, including the vast aldehyde dehydrogenase (ALDH) superfamily. Although the function of NAD(H) in hydride transfer is established, its influence on protein structure is less understood. Herein, we show that NAD+ -binding promotes assembly of the ALDH7A1 tetramer. Multiangle light scattering, small-angle X-ray scattering, and sedimentation velocity all show a pronounced shift of the dimer-tetramer equilibrium toward the tetramer when NAD+ is present. Furthermore, electron microscopy shows that cofactor binding enhances tetramer formation even at the low enzyme concentration used in activity assays, suggesting the tetramer is the active species. Altogether, our results suggest that the catalytically active oligomer of ALDH7A1 is assembled on demand in response to cofactor availability.
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Affiliation(s)
- David A. Korasick
- Department of Biochemistry, University of Missouri, Columbia, Missouri
| | - Tommi A. White
- Department of Biochemistry, University of Missouri, Columbia, Missouri
- Electron Microscopy Core Facility, University of Missouri, Columbia, Missouri
| | - Srinivas Chakravarthy
- Biophysics Collaborative Access Team, Argonne National Laboratory, Argonne, Illinois
| | - John J. Tanner
- Department of Biochemistry, University of Missouri, Columbia, Missouri
- Department of Chemistry, University of Missouri, Columbia, Missouri
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45
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Huddle BC, Grimley E, Buchman CD, Chtcherbinine M, Debnath B, Mehta P, Yang K, Morgan CA, Li S, Felton J, Sun D, Mehta G, Neamati N, Buckanovich RJ, Hurley TD, Larsen SD. Structure-Based Optimization of a Novel Class of Aldehyde Dehydrogenase 1A (ALDH1A) Subfamily-Selective Inhibitors as Potential Adjuncts to Ovarian Cancer Chemotherapy. J Med Chem 2018; 61:8754-8773. [PMID: 30221940 DOI: 10.1021/acs.jmedchem.8b00930] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aldehyde dehydrogenase (ALDH) activity is commonly used as a marker to identify cancer stem-like cells. The three ALDH1A isoforms have all been individually implicated in cancer stem-like cells and in chemoresistance; however, which isoform is preferentially expressed varies between cell lines. We sought to explore the structural determinants of ALDH1A isoform selectivity in a series of small-molecule inhibitors in support of research into the role of ALDH1A in cancer stem cells. An SAR campaign guided by a cocrystal structure of the HTS hit CM39 (7) with ALDH1A1 afforded first-in-class inhibitors of the ALDH1A subfamily with excellent selectivity over the homologous ALDH2 isoform. We also discovered the first reported modestly selective single isoform 1A2 and 1A3 inhibitors. Two compounds, 13g and 13h, depleted the CD133+ putative cancer stem cell pool, synergized with cisplatin, and achieved efficacious concentrations in vivo following IP administration. Compound 13h additionally synergized with cisplatin in a patient-derived ovarian cancer spheroid model.
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Affiliation(s)
| | | | - Cameron D Buchman
- Department of Biochemistry and Molecular Biology , Indiana University School of Medicine , Indianapolis , Indiana 46202 , United States
| | - Mikhail Chtcherbinine
- Department of Biochemistry and Molecular Biology , Indiana University School of Medicine , Indianapolis , Indiana 46202 , United States
| | | | - Pooja Mehta
- Department of Materials Science Engineering , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Kun Yang
- Division of Hematology Oncology, Department of Internal Medicine , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Cynthia A Morgan
- Department of Biochemistry and Molecular Biology , Indiana University School of Medicine , Indianapolis , Indiana 46202 , United States
| | - Siwei Li
- Department of Pharmaceutical Sciences, College of Pharmacy ; University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Jeremy Felton
- Department of Pharmaceutical Sciences, College of Pharmacy ; University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Duxin Sun
- Department of Pharmaceutical Sciences, College of Pharmacy ; University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Geeta Mehta
- Department of Materials Science Engineering , University of Michigan , Ann Arbor , Michigan 48109 , United States.,Department of Biomedical Engineering , University of Michigan , Ann Arbor , Michigan 48109 , United States.,Macromolecular Science and Engineering , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | | | - Ronald J Buckanovich
- Division of Hematology Oncology, Department of Internal Medicine , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Thomas D Hurley
- Department of Biochemistry and Molecular Biology , Indiana University School of Medicine , Indianapolis , Indiana 46202 , United States
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46
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Hayes K, Noor M, Djeghader A, Armshaw P, Pembroke T, Tofail S, Soulimane T. The quaternary structure of Thermus thermophilus aldehyde dehydrogenase is stabilized by an evolutionary distinct C-terminal arm extension. Sci Rep 2018; 8:13327. [PMID: 30190503 PMCID: PMC6127216 DOI: 10.1038/s41598-018-31724-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 08/22/2018] [Indexed: 12/04/2022] Open
Abstract
Aldehyde dehydrogenases (ALDH) form a superfamily of dimeric or tetrameric enzymes that catalyze the oxidation of a broad range of aldehydes into their corresponding carboxylic acids with the concomitant reduction of the cofactor NAD(P) into NAD(P)H. Despite their varied polypeptide chain length and oligomerisation states, ALDHs possess a conserved architecture of three domains: the catalytic domain, NAD(P)+ binding domain, and the oligomerization domain. Here, we describe the structure and function of the ALDH from Thermus thermophilus (ALDHTt) which exhibits non-canonical features of both dimeric and tetrameric ALDH and a previously uncharacterized C-terminal arm extension forming novel interactions with the N-terminus in the quaternary structure. This unusual tail also interacts closely with the substrate entry tunnel in each monomer providing further mechanistic detail for the recent discovery of tail-mediated activity regulation in ALDH. However, due to the novel distal extension of the tail of ALDHTt and stabilizing termini-interactions, the current model of tail-mediated substrate access is not apparent in ALDHTt. The discovery of such a long tail in a deeply and early branching phylum such as Deinococcus-Thermus indicates that ALDHTt may be an ancestral or primordial metabolic model of study. This structure provides invaluable evidence of how metabolic regulation has evolved and provides a link to early enzyme regulatory adaptations.
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Affiliation(s)
- Kevin Hayes
- Department of Chemical Sciences, University of Limerick, Limerick, V94 T9PX, Ireland.,Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Mohamed Noor
- Department of Chemical Sciences, University of Limerick, Limerick, V94 T9PX, Ireland.,Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Ahmed Djeghader
- Department of Chemical Sciences, University of Limerick, Limerick, V94 T9PX, Ireland.,Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Patricia Armshaw
- Department of Chemical Sciences, University of Limerick, Limerick, V94 T9PX, Ireland.,Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Tony Pembroke
- Department of Chemical Sciences, University of Limerick, Limerick, V94 T9PX, Ireland.,Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Syed Tofail
- Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland.,Physics Department, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Tewfik Soulimane
- Department of Chemical Sciences, University of Limerick, Limerick, V94 T9PX, Ireland. .,Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland.
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47
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Anorma C, Hedhli J, Bearrood TE, Pino NW, Gardner SH, Inaba H, Zhang P, Li Y, Feng D, Dibrell SE, Kilian KA, Dobrucki LW, Fan TM, Chan J. Surveillance of Cancer Stem Cell Plasticity Using an Isoform-Selective Fluorescent Probe for Aldehyde Dehydrogenase 1A1. ACS CENTRAL SCIENCE 2018; 4:1045-1055. [PMID: 30159402 PMCID: PMC6107868 DOI: 10.1021/acscentsci.8b00313] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Indexed: 05/19/2023]
Abstract
Cancer stem cells (CSCs) are progenitor cells that contribute to treatment-resistant phenotypes during relapse. CSCs exist in specific tissue microenvironments that cell cultures and more complex models cannot mimic. Therefore, the development of new approaches that can detect CSCs and report on specific properties (e.g., stem cell plasticity) in their native environment have profound implications for studying CSC biology. Herein, we present AlDeSense, a turn-on fluorescent probe for aldehyde dehydrogenase 1A1 (ALDH1A1) and Ctrl-AlDeSense, a matching nonresponsive reagent. Although ALDH1A1 contributes to the detoxification of reactive aldehydes, it is also associated with stemness and is highly elevated in CSCs. AlDeSense exhibits a 20-fold fluorescent enhancement when treated with ALDH1A1. Moreover, we established that AlDeSense is selective against a panel of common ALDH isoforms and exhibits exquisite chemostability against a collection of biologically relevant species. Through the application of surface marker antibody staining, tumorsphere assays, and assessment of tumorigenicity, we demonstrate that cells exhibiting high AlDeSense signal intensity have properties of CSCs. Using these probes in tandem, we have identified CSCs at the cellular level via flow cytometry and confocal imaging, as well as monitored their states in animal models.
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Affiliation(s)
- Chelsea Anorma
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Jamila Hedhli
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1304 W. Springfield Avenue, Urbana, Illinois 61801, United
States
- Beckman Institute
for Advanced Science and Technology, University
of Illinois at Urbana−Champaign, 405 N. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Thomas E. Bearrood
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Nicholas W. Pino
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Sarah H. Gardner
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Hiroshi Inaba
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Pamela Zhang
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Yanfen Li
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1304 W. Springfield Avenue, Urbana, Illinois 61801, United
States
| | - Daven Feng
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Sara E. Dibrell
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Kristopher A. Kilian
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1304 W. Springfield Avenue, Urbana, Illinois 61801, United
States
- School
of Materials Science and Engineering, School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Lawrence W. Dobrucki
- Department
of Bioengineering, University of Illinois
at Urbana−Champaign, 1304 W. Springfield Avenue, Urbana, Illinois 61801, United
States
- Beckman Institute
for Advanced Science and Technology, University
of Illinois at Urbana−Champaign, 405 N. Mathews Avenue, Urbana, Illinois 61801, United States
| | - Timothy M. Fan
- Department
of Veterinary Clinical Medicine, University
of Illinois at Urbana−Champaign, 2001 S Lincoln Avenue, Urbana, Illinois 61801, United States
| | - Jefferson Chan
- Department of Chemistry and Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States
- Beckman Institute
for Advanced Science and Technology, University
of Illinois at Urbana−Champaign, 405 N. Mathews Avenue, Urbana, Illinois 61801, United States
- E-mail:
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48
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Yang SM, Martinez NJ, Yasgar A, Danchik C, Johansson C, Wang Y, Baljinnyam B, Wang AQ, Xu X, Shah P, Cheff D, Wang XS, Roth J, Lal-Nag M, Dunford JE, Oppermann U, Vasiliou V, Simeonov A, Jadhav A, Maloney DJ. Discovery of Orally Bioavailable, Quinoline-Based Aldehyde Dehydrogenase 1A1 (ALDH1A1) Inhibitors with Potent Cellular Activity. J Med Chem 2018; 61:4883-4903. [PMID: 29767973 PMCID: PMC6004562 DOI: 10.1021/acs.jmedchem.8b00270] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
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Aldehyde
dehydrogenases (ALDHs) are responsible for the metabolism of aldehydes
(exogenous and endogenous) and possess vital physiological and toxicological
functions in areas such as CNS, inflammation, metabolic disorders,
and cancers. Overexpression of certain ALDHs (e.g., ALDH1A1) is an
important biomarker in cancers and cancer stem cells (CSCs) indicating
the potential need for the identification and development of small
molecule ALDH inhibitors. Herein, a newly designed series of quinoline-based
analogs of ALDH1A1 inhibitors is described. Extensive medicinal chemistry
optimization and biological characterization led to the identification
of analogs with significantly improved enzymatic and cellular ALDH
inhibition. Selected analogs, e.g., 86 (NCT-505) and 91 (NCT-506), demonstrated target engagement in a cellular
thermal shift assay (CETSA), inhibited the formation of 3D spheroid
cultures of OV-90 cancer cells, and potentiated the cytotoxicity of
paclitaxel in SKOV-3-TR, a paclitaxel resistant ovarian cancer cell
line. Lead compounds also exhibit high specificity over other ALDH
isozymes and unrelated dehydrogenases. The in vitro ADME profiles and pharmacokinetic evaluation of selected analogs
are also highlighted.
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Affiliation(s)
- Shyh-Ming Yang
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Natalia J Martinez
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Adam Yasgar
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Carina Danchik
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Catrine Johansson
- Centre for Translational Myeloma Research, Botnar Research Centre, Oxford NIHR BRU , University of Oxford , Oxford OX3 7LD , U.K
| | - Yuhong Wang
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Bolormaa Baljinnyam
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Amy Q Wang
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Xin Xu
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Pranav Shah
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Dorian Cheff
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Xinran S Wang
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Jacob Roth
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Madhu Lal-Nag
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - James E Dunford
- Centre for Translational Myeloma Research, Botnar Research Centre, Oxford NIHR BRU , University of Oxford , Oxford OX3 7LD , U.K
| | - Udo Oppermann
- Centre for Translational Myeloma Research, Botnar Research Centre, Oxford NIHR BRU , University of Oxford , Oxford OX3 7LD , U.K
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences , Yale School of Public Health , 60 College Street , New Haven , Connecticut 06510 , United States
| | - Anton Simeonov
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - Ajit Jadhav
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
| | - David J Maloney
- National Center for Advancing Translational Sciences, National Institutes of Health , 9800 Medical Center Drive , Rockville , Maryland 20850 , United States
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49
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Update of ALDH as a Potential Biomarker and Therapeutic Target for AML. BIOMED RESEARCH INTERNATIONAL 2018. [PMID: 29516013 PMCID: PMC5817321 DOI: 10.1155/2018/9192104] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Studies employing mouse transplantation have illustrated the role of aldehyde dehydrogenase (ALDH) defining hematopoietic stem cells (HSCs) and leukemia stem cells (LSCs). Besides being a molecular marker, ALDH mediates drug resistance in AML, which induces poor prognosis of the patients. In AML patients, either CD34+ALDHbr population or CD34+CD38-ALDHint population was found to denote LSCs and minimal residual disease (MRD). A bunch of reagents targeting ALDH directly or indirectly have been evaluated. ATRA, disulfiram, and dimethyl ampal thiolester (DIMATE) are all shown to be potential candidates to open new perspective for AML treatment. However, inconsistent results have been shown for markers of LSCs, which makes it even more difficult to differentiate LSCs and HSCs. In this review, we elevated the role of ALDH to be a potential marker to define and distinguish HSCs and LSCs and its importance in prognosis and target therapy in AML patients. In addition to immunophenotypical markers, ALDH is also functionally active in defining and distinguishing HSCs and LSCs and offers intracellular protections against cytotoxic drugs. Targeting ALDH may be a potential strategy to improve AML treatment. Additional studies concerning specific targeting ALDH and mechanisms of its roles in LSCs are warranted.
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50
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Aldehyde dehydrogenase 1A1 increases NADH levels and promotes tumor growth via glutathione/dihydrolipoic acid-dependent NAD + reduction. Oncotarget 2017; 8:67043-67055. [PMID: 28978015 PMCID: PMC5620155 DOI: 10.18632/oncotarget.17688] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 04/07/2017] [Indexed: 01/09/2023] Open
Abstract
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a member of the aldehyde dehydrogenase superfamily that oxidizes aldehydes to their corresponding acids, reactions that are coupled to the reduction of NAD+ to NADH. We report here that ALDH1A1 can also use glutathione (GSH) and dihydrolipoic acid (DHLA) as electron donors to reduce NAD+ to NADH. The GSH/DHLA-dependent NAD+-reduction activity of ALDH1A1 is not affected by the aldehyde dehydrogenase inhibitor or by mutation of the residues in its aldehyde-binding pocket. It is thus a distinct biochemical reaction from the classic aldehyde-dehydrogenase activity catalyzed by ALDH1A1. We also found that the ectopic expression of ALDH1A1 decreased the intracellular NAD+/NADH ratio, while knockout of ALDH1A1 increased the NAD+/NADH ratio. Simultaneous knockout of ALDH1A1 and its isozyme ALDH3A1 in lung cancer cell line NCI-H460 inhibited tumor growth in a xenograft model. Moreover, the ALDH1A1 mutants that retained their GSH/DHLA-dependent NAD+ reduction activity but lost their aldehyde-dehydrogenase activity were able to decrease the NAD+/NADH ratio and to rescue the impaired growth of ALDH1A1/3A1 double knockout tumor cells. Collectively, these results suggest that this newly characterized GSH/DHLA-dependent NAD+-reduction activity of ALDH1A1 can decrease cellular NAD+/NADH ratio and promote tumor growth.
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