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Ziki RA, Colnot S. Glutamine metabolism, a double agent combating or fuelling hepatocellular carcinoma. JHEP Rep 2024; 6:101077. [PMID: 38699532 PMCID: PMC11063524 DOI: 10.1016/j.jhepr.2024.101077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/16/2024] [Accepted: 02/28/2024] [Indexed: 05/05/2024] Open
Abstract
The reprogramming of glutamine metabolism is a key event in cancer more generally and in hepatocellular carcinoma (HCC) in particular. Glutamine consumption supplies tumours with ATP and metabolites through anaplerosis of the tricarboxylic acid cycle, while glutamine production can be enhanced by the overexpression of glutamine synthetase. In HCC, increased glutamine production is driven by activating mutations in the CTNNB1 gene encoding β-catenin. Increased glutamine synthesis or utilisation impacts tumour epigenetics, oxidative stress, autophagy, immunity and associated pathways, such as the mTOR (mammalian target of rapamycin) pathway. In this review, we will discuss studies which emphasise the pro-tumoral or tumour-suppressive effect of glutamine overproduction. It is clear that more comprehensive studies are needed as a foundation from which to develop suitable therapies targeting glutamine metabolic pathways, depending on the predicted pro- or anti-tumour role of dysregulated glutamine metabolism in distinct genetic contexts.
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Affiliation(s)
- Razan Abou Ziki
- INSERM, Sorbonne Université, Centre de Recherche des Cordeliers (CRC), Paris, F-75006, France
- Équipe labellisée Ligue Nationale Contre le Cancer, France
| | - Sabine Colnot
- INSERM, Sorbonne Université, Centre de Recherche des Cordeliers (CRC), Paris, F-75006, France
- Équipe labellisée Ligue Nationale Contre le Cancer, France
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Huang H, Tsui YM, Ho DWH, Chung CYS, Sze KMF, Lee E, Cheung GCH, Zhang VX, Wang X, Lyu X, Ng IOL. LANCL1, a cell surface protein, promotes liver tumor initiation through FAM49B-Rac1 axis to suppress oxidative stress. Hepatology 2024; 79:323-340. [PMID: 37540188 PMCID: PMC10789379 DOI: 10.1097/hep.0000000000000523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/25/2023] [Indexed: 08/05/2023]
Abstract
BACKGROUND AND AIMS HCC is an aggressive cancer with a poor clinical outcome. Understanding the mechanisms that drive tumor initiation is important for improving treatment strategy. This study aimed to identify functional cell membrane proteins that promote HCC tumor initiation. APPROACH AND RESULTS Tailor-made siRNA library screening was performed for all membrane protein-encoding genes that are upregulated in human HCC (n = 134), with sphere formation as a surrogate readout for tumor initiation. Upon confirmation of membranous localization by immunofluorescence and tumor initiation ability by limiting dilution assay in vivo, LanC-like protein-1 (LANCL1) was selected for further characterization. LANCL1 suppressed intracellular reactive oxygen species (ROS) and promoted tumorigenicity both in vitro and in vivo. Mechanistically, with mass spectrometry, FAM49B was identified as a downstream binding partner of LANCL1. LANCL1 stabilized FAM49B by blocking the interaction of FAM49B with the specific E3 ubiquitin ligase TRIM21, thus protecting FAM49B from ubiquitin-proteasome degradation. The LANCL1-FAM49B axis suppressed the Rac1-NADPH oxidase-driven ROS production, but this suppression of ROS was independent of the glutathione transferase function of LANCL1. Clinically, HCCs with high co-expression of LANCL1 and FAM49B were associated with more advanced tumor stage, poorer overall survival, and disease-free survival. In addition, anti-LANCL1 antibodies targeting the extracellular N-terminal domain were able to suppress the self-renewal ability, as demonstrated by the sphere formation ability of HCC cells. CONCLUSIONS Our data showed that LANCL1 is a cell surface protein and a key contributor to HCC initiation. Targeting the LANCL1-FAM49B-Rac1-NADPH oxidase-ROS signaling axis may be a promising therapeutic strategy for HCC.
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Affiliation(s)
- Hongyang Huang
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Yu-Man Tsui
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Daniel Wai-Hung Ho
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Clive Yik-Sham Chung
- Department of Pathology, The University of Hong Kong, Hong Kong
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong
| | - Karen Man-Fong Sze
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Eva Lee
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Gary Cheuk-Hang Cheung
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Vanilla Xin Zhang
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Xia Wang
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Xueying Lyu
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Irene Oi-Lin Ng
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
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Ibrahim FAR, Hussein NA, Soliman AYM, Shalaby TI, Rashad MM, Matar NA, El-Sewedy TS. Chitosan-loaded piperlongumine nanoparticles and kaempferol enhance the anti-cancer action of doxorubicin in targeting of Ehrlich solid adenocarcinoma: in vivo and in silico modeling study. Med Oncol 2024; 41:61. [PMID: 38253759 PMCID: PMC10803394 DOI: 10.1007/s12032-023-02282-5] [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: 11/15/2023] [Accepted: 12/06/2023] [Indexed: 01/24/2024]
Abstract
Doxorubicin is a chemotherapeutic drug that generates free radical-induced toxicities. Natural agents are used to potentiate or ameliorate the toxicity of chemotherapy. None of the studies investigating whether antioxidants or prooxidants should be used with chemotherapy have addressed their efficacy in the same study. Therefore, the aim of this study was to investigate the potential synergy between doxorubicin and two natural rarely in vivo studied anticancer agents; the antioxidant "Kaempferol" and prooxidant "Piperlongumine" in Ehrlich tumor mice model. 77 albino mice were divided into 11 groups; Ehrlich ascites carcinoma cells were injected intramuscularly to develop solid tumors. After 14 days, intratumoral injections of single or combinations of free or Chitosan nanoparticles loaded with doxorubicin, Piperlongumine, and Kaempferol were performed. Tumor Characterization of nanoparticles was measured, tumors were histopathologically examined and evaluation of expression for cancer-related genes by real-time PCR. In silico molecular docking was performed to uncover potential novel targets for Piperlongumine and Kaempferol. Despite receiving half of the overall dose compared to the free drugs, the combined doxorubicin/ piperlongumine-chitosan nanoparticles treatment was the most efficient in reducing tumor volume; down-regulating Cyclin D1, and BCL2; as well as the Beclin-1, and Cyclophilin A genes modulating growth, apoptosis, autophagy, and metastasis, respectively; up-regulating the Glutathione peroxidase expression as a defense mechanism protecting from oxidative damage. When combined with doxorubicin, Kaempferol and Piperlongumine were effective against Ehrlich solid tumors. However, the combination with the Piperlongumine-loaded chitosan nanoparticles significantly enhanced its anticancer effect compared to the Kaempferol or the same free compounds.
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Affiliation(s)
- Fawziya A R Ibrahim
- Department of Applied Medical Chemistry, Medical Research Institute, Alexandria University, 165 El-Horreya Avenue, El-Hadara, Alexandria, Egypt
| | - Neveen A Hussein
- Department of Applied Medical Chemistry, Medical Research Institute, Alexandria University, 165 El-Horreya Avenue, El-Hadara, Alexandria, Egypt
| | - Aisha Y M Soliman
- Faculty of Applied Medical Sciences, Pharos University, Alexandria, Egypt
| | - Thanaa I Shalaby
- Department of Medical Biophysics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Mona M Rashad
- Department of Applied Medical Chemistry, Medical Research Institute, Alexandria University, 165 El-Horreya Avenue, El-Hadara, Alexandria, Egypt
| | - Noura A Matar
- Department of Histochemistry and Cell Biology Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Tarek S El-Sewedy
- Department of Applied Medical Chemistry, Medical Research Institute, Alexandria University, 165 El-Horreya Avenue, El-Hadara, Alexandria, Egypt.
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Zhang Q, Tsui YM, Zhang VX, Lu AJ, Lee JMF, Lee E, Cheung GCH, Li PM, Cheung ETY, Chia NH, Lo ILO, Chan ACY, Cheung TT, Ng IOL, Ho DWH. Reciprocal interactions between malignant cells and macrophages enhance cancer stemness and M2 polarization in HBV-associated hepatocellular carcinoma. Theranostics 2024; 14:892-910. [PMID: 38169544 PMCID: PMC10758064 DOI: 10.7150/thno.87962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024] Open
Abstract
Background: The tumor microenvironment of cancers has emerged as a crucial component in regulating cancer stemness and plays a pivotal role in cell-cell communication. However, the specific mechanisms underlying these phenomena remain poorly understood. Methods: We performed the single-cell RNA sequencing (scRNA-seq) on nine HBV-associated hepatocellular carcinoma (HCC) patients. The heterogeneity of the malignant cells in pathway functions, transcription factors (TFs) regulation, overall survival, stemness, as well as ligand-receptor-based intercellular communication with macrophages were characterized. The aggressive and stemness feature for the target tumor subclone was validated by the conduction of in vitro assays including sphere formation, proliferation, Annexin V apoptosis, flow cytometry, siRNA library screening assays, and multiple in vivo preclinical mouse models including mouse hepatoma cell and human HCC cell xenograft models with subcutaneous or orthotopic injection. Results: Our analysis yielded a comprehensive atlas of 31,664 cells, revealing a diverse array of malignant cell subpopulations. Notably, we identified a stemness-related subclone of HCC cells with concurrent upregulation of CD24, CD47, and ICAM1 expression that correlated with poorer overall survival. Functional characterization both in vitro and in vivo validated S100A11 as one of the top downstream mediators for tumor initiation and stemness maintenance of this subclone. Further investigation of cell-cell communication within the tumor microenvironment revealed a propensity for bi-directional crosstalk between this stemness-related subclone and tumor-associated macrophages (TAMs). Co-culture study showed that this interaction resulted in the maintenance of the expression of cancer stem cell markers and driving M2-like TAM polarization towards a pro-tumorigenic niche. We also consolidated an inverse relationship between the proportions of TAMs and tumor-infiltrating T cells. Conclusions: Our study highlighted the critical role of stemness-related cancer cell populations in driving an immunosuppressive tumor microenvironment and identified the S100A11 gene as a key mediator for stemness maintenance in HCC. Moreover, our study provides support that the maintenance of cancer stemness is more attributed to M2 polarization than the recruitment of the TAMs.
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Affiliation(s)
- Qingyang Zhang
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Yu-Man Tsui
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Vanilla Xin Zhang
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Anna Jingyi Lu
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Joyce Man-Fong Lee
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Eva Lee
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Gary Cheuk-Hang Cheung
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Po-Man Li
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | | | - Nam-Hung Chia
- Department of Surgery, Queen Elizabeth Hospital, Hong Kong
| | | | - Albert Chi-Yan Chan
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
- Department of Surgery, The University of Hong Kong, Hong Kong
| | - Tan-To Cheung
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
- Department of Surgery, The University of Hong Kong, Hong Kong
| | - Irene Oi-Lin Ng
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
| | - Daniel Wai-Hung Ho
- Department of Pathology, The University of Hong Kong, Hong Kong
- State Key Laboratory of Liver Research, The University of Hong Kong, Hong Kong
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Echavarria R, Cardona-Muñoz EG, Ortiz-Lazareno P, Andrade-Sierra J, Gómez-Hermosillo LF, Casillas-Moreno J, Campos-Bayardo TI, Román-Rojas D, García-Sánchez A, Miranda-Díaz AG. The Role of the Oxidative State and Innate Immunity Mediated by TLR7 and TLR9 in Lupus Nephritis. Int J Mol Sci 2023; 24:15234. [PMID: 37894915 PMCID: PMC10607473 DOI: 10.3390/ijms242015234] [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: 08/22/2023] [Revised: 09/25/2023] [Accepted: 09/29/2023] [Indexed: 10/29/2023] Open
Abstract
Lupus nephritis (LN) is a severe complication of systemic lupus erythematosus (SLE) and is considered one of the leading causes of mortality. Multiple immunological pathways are involved in the pathogenesis of SLE, which makes it imperative to deepen our knowledge about this disease's immune-pathological complexity and explore new therapeutic targets. Since an altered redox state contributes to immune system dysregulation, this document briefly addresses the roles of oxidative stress (OS), oxidative DNA damage, antioxidant enzymes, mitochondrial function, and mitophagy in SLE and LN. Although adaptive immunity's participation in the development of autoimmunity is undeniable, increasing data emphasize the importance of innate immunity elements, particularly the Toll-like receptors (TLRs) that recognize nucleic acid ligands, in inflammatory and autoimmune diseases. Here, we discuss the intriguing roles of TLR7 and TLR9 in developing SLE and LN. Also included are the essential characteristics of conventional treatments and some other novel and little-explored alternatives that offer options to improve renal function in LN.
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Affiliation(s)
- Raquel Echavarria
- Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara 44340, Mexico; (R.E.); (P.O.-L.)
- Investigadores por México, Consejo Nacional de Ciencia y Tecnología (CONACYT), Ciudad de México 03940, Mexico
| | - Ernesto Germán Cardona-Muñoz
- Department of Physiology, University Center of Health Sciences, University of Guadalajara, Guadalajara 44360, Mexico; (E.G.C.-M.); (J.A.-S.); (L.F.G.-H.); (J.C.-M.); (T.I.C.-B.); (D.R.-R.); (A.G.-S.)
| | - Pablo Ortiz-Lazareno
- Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara 44340, Mexico; (R.E.); (P.O.-L.)
| | - Jorge Andrade-Sierra
- Department of Physiology, University Center of Health Sciences, University of Guadalajara, Guadalajara 44360, Mexico; (E.G.C.-M.); (J.A.-S.); (L.F.G.-H.); (J.C.-M.); (T.I.C.-B.); (D.R.-R.); (A.G.-S.)
| | - Luis Francisco Gómez-Hermosillo
- Department of Physiology, University Center of Health Sciences, University of Guadalajara, Guadalajara 44360, Mexico; (E.G.C.-M.); (J.A.-S.); (L.F.G.-H.); (J.C.-M.); (T.I.C.-B.); (D.R.-R.); (A.G.-S.)
| | - Jorge Casillas-Moreno
- Department of Physiology, University Center of Health Sciences, University of Guadalajara, Guadalajara 44360, Mexico; (E.G.C.-M.); (J.A.-S.); (L.F.G.-H.); (J.C.-M.); (T.I.C.-B.); (D.R.-R.); (A.G.-S.)
| | - Tannia Isabel Campos-Bayardo
- Department of Physiology, University Center of Health Sciences, University of Guadalajara, Guadalajara 44360, Mexico; (E.G.C.-M.); (J.A.-S.); (L.F.G.-H.); (J.C.-M.); (T.I.C.-B.); (D.R.-R.); (A.G.-S.)
| | - Daniel Román-Rojas
- Department of Physiology, University Center of Health Sciences, University of Guadalajara, Guadalajara 44360, Mexico; (E.G.C.-M.); (J.A.-S.); (L.F.G.-H.); (J.C.-M.); (T.I.C.-B.); (D.R.-R.); (A.G.-S.)
| | - Andrés García-Sánchez
- Department of Physiology, University Center of Health Sciences, University of Guadalajara, Guadalajara 44360, Mexico; (E.G.C.-M.); (J.A.-S.); (L.F.G.-H.); (J.C.-M.); (T.I.C.-B.); (D.R.-R.); (A.G.-S.)
| | - Alejandra Guillermina Miranda-Díaz
- Department of Physiology, University Center of Health Sciences, University of Guadalajara, Guadalajara 44360, Mexico; (E.G.C.-M.); (J.A.-S.); (L.F.G.-H.); (J.C.-M.); (T.I.C.-B.); (D.R.-R.); (A.G.-S.)
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Herdiana Y, Sriwidodo S, Sofian FF, Wilar G, Diantini A. Nanoparticle-Based Antioxidants in Stress Signaling and Programmed Cell Death in Breast Cancer Treatment. Molecules 2023; 28:5305. [PMID: 37513179 PMCID: PMC10384004 DOI: 10.3390/molecules28145305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Breast cancer (BC) is a complex and heterogeneous disease, and oxidative stress is a hallmark of BC. Oxidative stress is characterized by an imbalance between the production of reactive oxygen species (ROS) and antioxidant defense mechanisms. ROS has been implicated in BC development and progression by inducing DNA damage, inflammation, and angiogenesis. Antioxidants have been shown to scavenge ROS and protect cells from oxidative damage, thereby regulating signaling pathways involved in cell growth, survival, and death. Plants contain antioxidants like ascorbic acid, tocopherols, carotenoids, and flavonoids, which have been found to regulate stress signaling and PCD in BC. Combining different antioxidants has shown promise in enhancing the effectiveness of BC treatment. Antioxidant nanoparticles, when loaded with antioxidants, can effectively target breast cancer cells and enhance their cellular uptake. Notably, these nanoparticles have shown promising results in inducing PCD and sensitizing breast cancer cells to chemotherapy, even in cases where resistance is observed. This review aims to explore how nanotechnology can modulate stress signaling and PCD in breast cancer. By summarizing current research, it underscores the potential of nanotechnology in enhancing antioxidant properties for the treatment of breast cancer.
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Affiliation(s)
- Yedi Herdiana
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Sriwidodo Sriwidodo
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Ferry Ferdiansyah Sofian
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Gofarana Wilar
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Ajeng Diantini
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang 45363, Indonesia
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Sahasrabudhe SA, Terluk MR, Kartha RV. N-acetylcysteine Pharmacology and Applications in Rare Diseases-Repurposing an Old Antioxidant. Antioxidants (Basel) 2023; 12:1316. [PMID: 37507857 PMCID: PMC10376274 DOI: 10.3390/antiox12071316] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/31/2023] [Accepted: 06/02/2023] [Indexed: 07/30/2023] Open
Abstract
N-acetylcysteine (NAC), a precursor of cysteine and, thereby, glutathione (GSH), acts as an antioxidant through a variety of mechanisms, including oxidant scavenging, GSH replenishment, antioxidant signaling, etc. Owing to the variety of proposed targets, NAC has a long history of use as a prescription product and in wide-ranging applications that are off-label as an over-the-counter (OTC) product. Despite its discovery in the early 1960s and its development for various indications, systematic clinical pharmacology explorations of NAC pharmacokinetics (PK), pharmacodynamic targets, drug interactions, and dose-ranging are sorely limited. Although there are anecdotal instances of NAC benefits in a variety of diseases, a comprehensive review of the use of NAC in rare diseases does not exist. In this review, we attempt to summarize the existing literature focused on NAC explorations in rare diseases targeting mitochondrial dysfunction along with the history of NAC usage, approved indications, mechanisms of action, safety, and PK characterization. Further, we introduce the research currently underway on other structural derivatives of NAC and acknowledge the continuum of efforts through pre-clinical and clinical research to facilitate further therapeutic development of NAC or its derivatives for rare diseases.
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Affiliation(s)
- Siddhee A Sahasrabudhe
- Center for Orphan Drug Research, Department of Experimental and Clinical Pharmacology, Rm 4-214, McGuire Translational Research Facility, 2001 6th St. SE, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
| | - Marcia R Terluk
- Center for Orphan Drug Research, Department of Experimental and Clinical Pharmacology, Rm 4-214, McGuire Translational Research Facility, 2001 6th St. SE, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
| | - Reena V Kartha
- Center for Orphan Drug Research, Department of Experimental and Clinical Pharmacology, Rm 4-214, McGuire Translational Research Facility, 2001 6th St. SE, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA
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Ajouaou Y, Magnani E, Madakashira B, Jenkins E, Sadler KC. atm Mutation and Oxidative Stress Enhance the Pre-Cancerous Effects of UHRF1 Overexpression in Zebrafish Livers. Cancers (Basel) 2023; 15:cancers15082302. [PMID: 37190230 DOI: 10.3390/cancers15082302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 03/29/2023] [Indexed: 05/17/2023] Open
Abstract
The ataxia-telangiectasia mutated (atm) gene is activated in response to genotoxic stress and leads to activation of the tp53 tumor suppressor gene which induces either senescence or apoptosis as tumor suppressive mechanisms. Atm also serves non-canonical functions in the response to oxidative stress and chromatin reorganization. We previously reported that overexpression of the epigenetic regulator and oncogene Ubiquitin Like with PHD and Ring Finger Domains 1 (UHRF1) in zebrafish hepatocytes resulted in tp53-dependent hepatocyte senescence, a small liver and larval lethality. We investigated the role of atm on UHRF1-mediated phenotypes by generating zebrafish atm mutants. atm-/- adults were viable but had reduction in fertility. Embryos developed normally but were protected from lethality caused by etoposide or H2O2 exposure and failed to fully upregulate Tp53 targets or oxidative stress response genes in response to these treatments. In contrast to the finding that Tp53 prevents the small liver phenotype caused by UHRF1 overexpression, atm mutation and exposure to H2O2 further reduced the liver size in UHRF1 overexpressing larvae whereas treatment with the antioxidant N-acetyl cysteine suppressed this phenotype. We conclude that UHRF1 overexpression in hepatocytes causes oxidative stress, and that loss of atm further enhances this, triggering elimination of these precancerous cells, leading to a small liver.
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Affiliation(s)
- Yousra Ajouaou
- Program in Biology, New York University Abu Dhabi, Abu Dhabi P.O. 129188, United Arab Emirates
- Center for Genomics and Systems Biology (CGSB), New York University Abu Dhabi, Abu Dhabi P.O. 129188, United Arab Emirates
| | - Elena Magnani
- Program in Biology, New York University Abu Dhabi, Abu Dhabi P.O. 129188, United Arab Emirates
| | - Bhavani Madakashira
- Program in Biology, New York University Abu Dhabi, Abu Dhabi P.O. 129188, United Arab Emirates
| | - Eleanor Jenkins
- Program in Biology, New York University Abu Dhabi, Abu Dhabi P.O. 129188, United Arab Emirates
| | - Kirsten C Sadler
- Program in Biology, New York University Abu Dhabi, Abu Dhabi P.O. 129188, United Arab Emirates
- Center for Genomics and Systems Biology (CGSB), New York University Abu Dhabi, Abu Dhabi P.O. 129188, United Arab Emirates
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Nanodrugs alleviate acute kidney injury: Manipulate RONS at kidney. Bioact Mater 2023; 22:141-167. [PMID: 36203963 PMCID: PMC9526023 DOI: 10.1016/j.bioactmat.2022.09.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/12/2022] [Accepted: 09/19/2022] [Indexed: 02/06/2023] Open
Abstract
Currently, there are no clinical drugs available to treat acute kidney injury (AKI). Given the high prevalence and high mortality rate of AKI, the development of drugs to effectively treat AKI is a huge unmet medical need and a research hotspot. Although existing evidence fully demonstrates that reactive oxygen and nitrogen species (RONS) burst at the AKI site is a major contributor to AKI progression, the heterogeneity, complexity, and unique physiological structure of the kidney make most antioxidant and anti-inflammatory small molecule drugs ineffective because of the lack of kidney targeting and side effects. Recently, nanodrugs with intrinsic kidney targeting through the control of size, shape, and surface properties have opened exciting prospects for the treatment of AKI. Many antioxidant nanodrugs have emerged to address the limitations of current AKI treatments. In this review, we systematically summarized for the first time about the emerging nanodrugs that exploit the pathological and physiological features of the kidney to overcome the limitations of traditional small-molecule drugs to achieve high AKI efficacy. First, we analyzed the pathological structural characteristics of AKI and the main pathological mechanism of AKI: hypoxia, harmful substance accumulation-induced RONS burst at the renal site despite the multifactorial initiation and heterogeneity of AKI. Subsequently, we introduced the strategies used to improve renal targeting and reviewed advances of nanodrugs for AKI: nano-RONS-sacrificial agents, antioxidant nanozymes, and nanocarriers for antioxidants and anti-inflammatory drugs. These nanodrugs have demonstrated excellent therapeutic effects, such as greatly reducing oxidative stress damage, restoring renal function, and low side effects. Finally, we discussed the challenges and future directions for translating nanodrugs into clinical AKI treatment. AKI is a common clinical acute syndrome with high morbidity and mortality but without effective clinical drug available. Hypoxia and accumulation of toxic substances are key pathological features of various heterogeneous AKI. Excessive RONS is the core of the pathological mechanism of AKI. The development of nanodrugs is expected to achieve successful treatment in AKI.
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Song C, Long X, He J, Huang Y. Recent evaluation about inflammatory mechanisms in nonalcoholic fatty liver disease. Front Pharmacol 2023; 14:1081334. [PMID: 37007030 PMCID: PMC10061077 DOI: 10.3389/fphar.2023.1081334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 02/28/2023] [Indexed: 03/18/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is common chronic metabolic liver disorder which is associated with fat accumulation in the liver. It causes a wide range of pathological effects such as insulin resistance, obesity, hypertension, diabetes, non-alcoholic steatohepatitis (NASH) and cirrhosis, cardiovascular diseases. The molecular mechanisms that cause the initiation and progression of NAFLD remain fully unclear. Inflammation is regarded as a significant mechanism which could result in cell death and tissue injury. Accumulation of leukocytes and hepatic inflammation are important contributors in NAFLD. Excessive inflammatory response can deteriorate the tissue injury in NAFLD. Thus, inhibition of inflammation improves NAFLD by reducing intrahepatic fat content, increasing β-oxidation of fatty acids, inducing hepato-protective autophagy, overexpressing peroxisome proliferator-activated receptor- γ (PPAR-γ), as well as attenuating hepatocyte apoptosis and increasing insulin sensitivity. Therefore, understanding the molecules and signaling pathways suggests us valuable information about NAFLD progression. This review aimed to evaluate the inflammation in NAFLD and the molecular mechanism on NAFLD.
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Affiliation(s)
- Chong Song
- Medicine School, Changsha Social Work College, Changsha, Hunan, China
| | - Xian Long
- Medicine School, Changsha Social Work College, Changsha, Hunan, China
| | - Jianbin He
- Department of Respiratory and Critical Care Medicine, The First People’s Hospital of Huaihua, Affiliated to University of South China, Huaihua, Hunan, China
- *Correspondence: Yongpan Huang, ; Jianbin He,
| | - Yongpan Huang
- Medicine School, Changsha Social Work College, Changsha, Hunan, China
- *Correspondence: Yongpan Huang, ; Jianbin He,
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11
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Yan Z, Chen Q, Xia Y. Oxidative Stress Contributes to Inflammatory and Cellular Damage in Systemic Lupus Erythematosus: Cellular Markers and Molecular Mechanism. J Inflamm Res 2023; 16:453-465. [PMID: 36761905 PMCID: PMC9907008 DOI: 10.2147/jir.s399284] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 01/18/2023] [Indexed: 02/05/2023] Open
Abstract
Systemic lupus erythematosus (SLE) is a multifactorial autoimmune disease with complex pathogenesis, the treatment of which relies exclusively on the use of immunosuppressants. Increased oxidative stress is involved in causing inflammatory and cellular defects in the pathogenesis of SLE. Various inflammatory and cellular markers including oxidative modifications of proteins, lipids, and DNA contribute to immune system dysregulation and trigger an aggressive autoimmune attack through molecular mechanisms like enhanced NETosis, mTOR pathway activation, and imbalanced T-cell differentiation. Accordingly, the detection of inflammatory and cellular markers is important for providing an accurate assessment of the extent of oxidative stress. Oxidative stress also reduces DNA methylation, thus allowing the increased expression of affected genes. As a result, pharmacological approaches targeting oxidative stress yield promising results in treating patients with SLE. The purpose of this review is to examine the involvement of oxidative stress in the pathogenesis and management of SLE.
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Affiliation(s)
- Zhu Yan
- Department of Dermatology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, 710004, People’s Republic of China
| | - Qin Chen
- Department of Dermatology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, 710004, People’s Republic of China
| | - Yumin Xia
- Department of Dermatology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, 710004, People’s Republic of China,Correspondence: Yumin Xia, Department of Dermatology, The Second Affiliated Hospital of Xi’an Jiaotong University, 157 Xiwu Road, Xi’an, 710004, People’s Republic of China, Tel/Fax +86-29-87679969, Email
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12
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Beeraka NM, Zhang J, Zhao D, Liu J, A U C, Vikram Pr H, Shivaprakash P, Bannimath N, Manogaran P, Sinelnikov MY, Bannimath G, Fan R. Combinatorial Implications of Nrf2 Inhibitors with FN3K Inhibitor: In vitro Breast Cancer Study. Curr Pharm Des 2023; 29:2408-2425. [PMID: 37861038 DOI: 10.2174/0113816128261466231011114600] [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: 05/18/2023] [Revised: 08/07/2023] [Accepted: 08/14/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND Platinum derivatives are chemotherapeutic agents preferred for the treatment of cancers including breast cancer. Oxaliplatin is an anticancer drug that is in phase II studies to treat metastatic breast cancer. However, its usage is constrained by chemoresistance and dose-related side effects. OBJECTIVE The objective of this study is to examine the combinatorial efficacy of brusatol, an Nrf2 blocker, with oxaliplatin (a proven FN3K blocker in our study) in mitigating breast cancer growth in vitro. METHODS We performed cytotoxicity assays, combination index (CI) analysis, colony formation assays, apoptosis assays, and Western blotting. RESULTS Results of our study described the chemosensitizing efficacy of brusatol in combination with lowdose oxaliplatin against breast cancer through synergistic effects in both BT-474 and T47D cells. A significant mitigation in the migration rate of these cancer cells was observed with the combination regimen, which is equivalent to the IC-50 dose of oxaliplatin (125 μM). Furthermore, ROS-mediated and apoptotic modes of cell death were observed with a combinatorial regimen. Colony formation of breast cancer cell lines was mitigated with a combinatorial regimen of bursatol and oxaliplatin than the individual treatment regimen. FN3K expression downregulated with oxaliplatin in T47D cells. The mitigation of FN3K protein expression with a combination regimen was not observed but the Nrf2 downstream antioxidant signaling proteins were significantly downregulated with a combination regimen similar to individual drug regimens. CONCLUSION Our study concluded the combination efficacy of phytochemicals like brusatol in combination with low-dose oxaliplatin (FN3K blocker), which could enhance the chemosensitizing effect in breast cancer and minimize the overall dose requirement of oxaliplatin.
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Affiliation(s)
- Narasimha M Beeraka
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, 1 Jianshedong Str., Zhengzhou 450052, China
- Sechenov First Moscow State Medical University, 8-2 Trubetskaya St., Moscow 119991, Russia
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, Karnataka, India
| | - Jin Zhang
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi 39216, USA
| | - Di Zhao
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Junqi Liu
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, 1 Jianshedong Str., Zhengzhou 450052, China
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshedong Str., Zhengzhou 450052, China
| | - Chinnappa A U
- Department of Biochemistry, JSS Medical College, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, Karnataka, India
| | - Hemanth Vikram Pr
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, Karnataka, India
- Xenone Healthcare Pvt. Ltd, #318, Third Floor, US Complex, Jasola, New Delhi 110076, India
| | - Priyanka Shivaprakash
- Faculty of Life Sciences, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, Karnataka, India
| | - Namitha Bannimath
- Department of Pharmacology and Toxicology, JSS College of Pharmacy, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, Karnataka, India
| | - Prasath Manogaran
- Department of Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - Mikhail Y Sinelnikov
- Sechenov First Moscow State Medical University, 8-2 Trubetskaya St., Moscow 119991, Russia
- Sinelab Biomedical Research Center, Minnesota 55905, USA
| | - Gurupadayya Bannimath
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research (JSS AHER), Mysuru, Karnataka, India
| | - Ruitai Fan
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, 1 Jianshedong Str., Zhengzhou 450052, China
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshedong Str., Zhengzhou 450052, China
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Why Do Dietary Flavonoids Have a Promising Effect as Enhancers of Anthracyclines? Hydroxyl Substituents, Bioavailability and Biological Activity. Int J Mol Sci 2022; 24:ijms24010391. [PMID: 36613834 PMCID: PMC9820151 DOI: 10.3390/ijms24010391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Anthracyclines currently play a key role in the treatment of many cancers, but the limiting factor of their use is the widespread phenomenon of drug resistance and untargeted toxicity. Flavonoids have pleiotropic, beneficial effects on human health that, apart from antioxidant activity, are currently considered small molecules-starting structures for drug development and enhancers of conventional therapeutics. This paper is a review of the current and most important data on the participation of a selected series of flavonoids: chrysin, apigenin, kaempferol, quercetin and myricetin, which differ in the presence of an additional hydroxyl group, in the formation of a synergistic effect with anthracycline antibiotics. The review includes a characterization of the mechanism of action of flavonoids, as well as insight into the physicochemical parameters determining their bioavailability in vitro. The crosstalk between flavonoids and the molecular activity of anthracyclines discussed in the article covers the most important common areas of action, such as (1) disruption of DNA integrity (genotoxic effect), (2) modulation of antioxidant response pathways, and (3) inhibition of the activity of membrane proteins responsible for the active transport of drugs and xenobiotics. The increase in knowledge about the relationship between the molecular structure of flavonoids and their biological effect makes it possible to more effectively search for derivatives with a synergistic effect with anthracyclines and to develop better therapeutic strategies in the treatment of cancer.
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Zhu Y, Yue P, Dickinson CF, Yang JK, Datanagan K, Zhai N, Zhang Y, Miklossy G, Lopez-Tapia F, Tius MA, Turkson J. Natural product preferentially targets redox and metabolic adaptations and aberrantly active STAT3 to inhibit breast tumor growth in vivo. Cell Death Dis 2022; 13:1022. [PMID: 36473850 PMCID: PMC9726930 DOI: 10.1038/s41419-022-05477-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 11/23/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022]
Abstract
Dysregulated gene expression programs and redox and metabolic adaptations allow cancer cells to survive under high oxidative burden. These mechanisms also represent therapeutic vulnerabilities. Using triple-negative breast cancer (TNBC) as a model, we show that compared to normal human breast epithelial cells, the TNBC cells, MDA-MB-231 and MDA-MB-468 that harbor constitutively active STAT3 also express higher glucose-6-phosphate dehydrogenase (G6PD), thioredoxin reductase (TrxR)1, NADPH, and GSH levels for survival. Present studies discover that the natural product, R001, targets these adaptation mechanisms. Treatment of TNBC cells with R001 inhibited constitutively active STAT3, STAT3-regulated gene expression, and the functions of G6PD and TrxR1. Consequently, in the TNBC, but not normal cells, R001 suppressed GSH levels, but raised NADPH levels, reflective of a loss of mitochondrial respiration and which led to reactive oxygen species (ROS) induction, all of which led to loss of viable cells and inhibition of anchorage-dependent and independent growth. R001 treatment further led to early pyroptosis and late DNA damage, cell cycle arrest, and apoptosis only in the TNBC cells. Oral administration of 5 mg/kg R001 inhibited MDA-MB-468 xenografts growth in mice, with reduced pY705-STAT3, G6PD, TrxR1, and GSH levels. R001 serves as a therapeutic entity that targets the vulnerabilities of TNBC cells to inhibit tumor growth in vivo.
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Affiliation(s)
- Yinsong Zhu
- grid.50956.3f0000 0001 2152 9905Division of Medical Oncology, Department of Medicine, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA ,grid.50956.3f0000 0001 2152 9905Cedars-Sinai Cancer, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA
| | - Peibin Yue
- grid.50956.3f0000 0001 2152 9905Division of Medical Oncology, Department of Medicine, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA ,grid.50956.3f0000 0001 2152 9905Cedars-Sinai Cancer, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA
| | - Cody F. Dickinson
- grid.410445.00000 0001 2188 0957Department of Chemistry, University of Hawaii, Manoa, 2545 McCarthy Mall, Honolulu, HI 96825 USA
| | - Justin K. Yang
- grid.410445.00000 0001 2188 0957Department of Chemistry, University of Hawaii, Manoa, 2545 McCarthy Mall, Honolulu, HI 96825 USA
| | - Kyrstin Datanagan
- grid.410445.00000 0001 2188 0957Department of Chemistry, University of Hawaii, Manoa, 2545 McCarthy Mall, Honolulu, HI 96825 USA
| | - Ning Zhai
- grid.50956.3f0000 0001 2152 9905Division of Medical Oncology, Department of Medicine, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA ,grid.50956.3f0000 0001 2152 9905Cedars-Sinai Cancer, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA
| | - Yi Zhang
- grid.50956.3f0000 0001 2152 9905Biobank and Research Pathology Resource, Academic Affairs and Research Administration, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA
| | - Gabriella Miklossy
- grid.516097.c0000 0001 0311 6891Cancer Biology Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813 USA
| | - Francisco Lopez-Tapia
- grid.50956.3f0000 0001 2152 9905Division of Medical Oncology, Department of Medicine, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA ,grid.50956.3f0000 0001 2152 9905Cedars-Sinai Cancer, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA
| | - Marcus A. Tius
- grid.410445.00000 0001 2188 0957Department of Chemistry, University of Hawaii, Manoa, 2545 McCarthy Mall, Honolulu, HI 96825 USA ,grid.516097.c0000 0001 0311 6891Cancer Biology Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, HI 96813 USA
| | - James Turkson
- grid.50956.3f0000 0001 2152 9905Division of Medical Oncology, Department of Medicine, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA ,grid.50956.3f0000 0001 2152 9905Cedars-Sinai Cancer, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles, CA 90048 USA
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Fludioxonil, a phenylpyrrol pesticide, induces Cytoskeleton disruption, DNA damage and apoptosis via oxidative stress on rat glioma cells. Food Chem Toxicol 2022; 170:113464. [DOI: 10.1016/j.fct.2022.113464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/22/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022]
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Kalyanaraman B. NAC, NAC, Knockin' on Heaven's door: Interpreting the mechanism of action of N-acetylcysteine in tumor and immune cells. Redox Biol 2022; 57:102497. [PMID: 36242913 PMCID: PMC9563555 DOI: 10.1016/j.redox.2022.102497] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 10/05/2022] [Indexed: 11/17/2022] Open
Abstract
N-acetylcysteine (NAC) has been used as a direct scavenger of reactive oxygen species (hydrogen peroxide, in particular) and an antioxidant in cancer biology and immuno-oncology. NAC is the antioxidant drug most frequently employed in studies using tumor cells, immune cells, and preclinical mouse xenografts. Most studies use redox-active fluorescent probes such as dichlorodihydrofluorescein, hydroethidine, mitochondria-targeted hydroethidine, and proprietary kit-based probes (i.e., CellROX Green and CellROX Red) for intracellular detection of superoxide or hydrogen peroxide. Inhibition of fluorescence by NAC was used as a key experimental observation to support the formation of reactive oxygen species and redox mechanisms proposed for ferroptosis, tumor metastasis, and redox signaling in the tumor microenvironment. Reactive oxygen species such as superoxide and hydrogen peroxide stimulate or abrogate tumor cells and immune cells depending on multiple factors. Understanding the mechanism of antioxidants is crucial for interpretation of the results. Because neither NAC nor the fluorescent probes indicated above react directly with hydrogen peroxide, it is critically important to reinterpret the results to advance our understanding of the mechanism of action of NAC and shed additional mechanistic insight on redox-regulated signaling in tumor biology. To this end, this review is focused on how NAC could affect multiple pathways in cancer cells, including iron signaling, ferroptosis, and the glutathione-dependent antioxidant and redox signaling mechanism, and how NAC could inhibit oxidation of the fluorescent probes through multiple mechanisms.
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Affiliation(s)
- Balaraman Kalyanaraman
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, USA.
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17
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Li S, Fasipe B, Laher I. Potential harms of supplementation with high doses of antioxidants in athletes. J Exerc Sci Fit 2022; 20:269-275. [PMID: 35812825 PMCID: PMC9241084 DOI: 10.1016/j.jesf.2022.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 05/31/2022] [Accepted: 06/05/2022] [Indexed: 12/14/2022] Open
Affiliation(s)
| | | | - Ismail Laher
- University of British Columbia, Canada
- Corresponding author.
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Design, Synthesis and Activity of New N1-Alkyl Tryptophan Functionalized Dendrimeric Peptides against Glioblastoma. Biomolecules 2022; 12:biom12081116. [PMID: 36009010 PMCID: PMC9406037 DOI: 10.3390/biom12081116] [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: 07/28/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Due to resistance to conventional therapy, a blood–brain barrier that results in poor drug delivery, and a high potential for metastasis, glioblastoma (GBM) presents a great medical challenge. Since the repertoire of the possible therapies is very limited, novel therapeutic strategies require new drugs as well as new approaches. The multiple roles played by L-tryptophan (Trp) in tumorigenesis of GBM and the previously found antiproliferative properties of Trp-bearing dendrimers against this malignancy prompted us to design novel polyfunctional peptide-based dendrimers covalently attached to N1-alkyl tryptophan (Trp) residues. Their antiproliferative properties against GBM and normal human astrocytes (NHA) and their antioxidant potential were tested. Methods: Two groups of amphiphilic peptide dendrimers terminated with N1-butyl and N1-aminopentane tryptophan were designed. The influence of dendrimers on viability of NHA and human GBM cell lines, displaying different genetic backgrounds and tumorigenic potentials, was determined by the MTT test. The influence of compounds on the clonogenic potential of GBM cells was assessed by colony-formation assay. Dendrimers were tested for radical scavenging potency as well as redox capability (DPPH, ABTS, and FRAP models). Results: Several peptide dendrimers functionalized with N1-alkyl-tryptophan at 5 µM concentration exhibited high selectivity towards GBM cells retaining 85–95% viable NHA cells while killing cancer cells. In both the MTT and colony-formation assays, compounds 21 (functionalized with N1-butyl-Trp and (+)8 charged) and 25 (functionalized with N1-aminopentane-Trp and (+)12 charged) showed the most promise for their development into anticancer drugs. According to ABTS, DPPH, and FRAP antioxidant tests, dendrimers functionalized with N1-alkylated Trp expressed higher ROS-scavenging capacity (ABTS and DPPH) than those with unsubstituted Trp. Conclusions: Peptide dendrimers functionalized with N1-alkyl-tryptophan showed varying toxicity to NHA, while all were toxic to GBM cells. Based on their activity towards inhibition of GBM viability and relatively mild effect on NHA cells the most advantageous were derivatives 21 and 25 with the respective di-dodecyl and dodecyl residue located at the C-terminus. As expected, peptide dendrimers functionalized with N1-alkyl-tryptophan expressed higher scavenging potency against ROS than dendrimers with unsubstituted tryptophan.
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Wiggs MP, Beaudry AG, Law ML. Cardiac Remodeling in Cancer-Induced Cachexia: Functional, Structural, and Metabolic Contributors. Cells 2022; 11:cells11121931. [PMID: 35741060 PMCID: PMC9221803 DOI: 10.3390/cells11121931] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/01/2022] [Accepted: 06/08/2022] [Indexed: 11/17/2022] Open
Abstract
Cancer cachexia is a syndrome of progressive weight loss and muscle wasting occurring in many advanced cancer patients. Cachexia significantly impairs quality of life and increases mortality. Cardiac atrophy and dysfunction have been observed in patients with cachexia, which may contribute to cachexia pathophysiology. However, relative to skeletal muscle, little research has been carried out to understand the mechanisms of cardiomyopathy in cachexia. Here, we review what is known clinically about the cardiac changes occurring in cachexia, followed by further discussion of underlying physiological and molecular mechanisms contributing to cachexia-induced cardiomyopathy. Impaired cardiac contractility and relaxation may be explained by a complex interplay of significant heart muscle atrophy and metabolic remodeling, including mitochondrial dysfunction. Because cardiac muscle has fundamental differences compared to skeletal muscle, understanding cardiac-specific effects of cachexia may bring light to unique therapeutic targets and ultimately improve clinical management for patients with cancer cachexia.
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Affiliation(s)
- Michael P. Wiggs
- Department of Health, Human Performance, and Recreation, Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76706, USA; (M.P.W.); (A.G.B.)
| | - Anna G. Beaudry
- Department of Health, Human Performance, and Recreation, Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76706, USA; (M.P.W.); (A.G.B.)
| | - Michelle L. Law
- Department of Human Sciences and Design, Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76706, USA
- Correspondence: ; Tel.: +1-(254)-710-6003
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Tumor Promoting Effects of Sulforaphane on Diethylnitrosamine-Induced Murine Hepatocarcinogenesis. Int J Mol Sci 2022; 23:ijms23105397. [PMID: 35628208 PMCID: PMC9141104 DOI: 10.3390/ijms23105397] [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: 03/27/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 12/10/2022] Open
Abstract
Nuclear factor erythroid 2-related factor 2 (NRF2) is a key transcription factor involved in protection against initiation of carcinogenesis in normal cells. Notably, recent studies have demonstrated that aberrant activation of NRF2 accelerates the proliferation and progression of cancer cells. The differential effects of NRF2 on multi-stage carcinogenesis have raised a concern about the validity of NRF2 activators for chemoprevention. This prompted us to assess the effects of sulforaphane (SFN), a prototypic NRF2 activating chemopreventive phytochemical, on experimentally induced carcinogenesis. In the present study, SFN was daily injected intraperitoneally (25 mg/kg) for 3 months to male C57BL/6 mice at 6 months after single intraperitoneal administration of a hepatocarcinogen, diethylnitrosamine (DEN). The liver to body weight ratio, tumor growth, and the number and the size of hepatomas measured at 9 months after DEN administration were significantly higher in SFN-treated mice than those in vehicle-treated mice. Moreover, the expression of NRF2, its target protein NAD(P)H:quinone oxidoreductase 1, and the cell proliferation marker, proliferating cell nuclear antigen was further elevated in DEN plus SFN-treated mice. These results suggest that once hepatocarcinogenesis is initiated, SFN may stimulate tumor progression.
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