1
|
Xia Q, Lan J, Pan Y, Wang Y, Song T, Yang Y, Tian X, Chen L, Gu Z, Ding YY. Effects of Dityrosine on Lactic Acid Metabolism in Mice Gastrocnemius Muscle During Endurance Exercise via the Oxidative Stress-Induced Mitochondria Damage. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:5269-5282. [PMID: 38439706 DOI: 10.1021/acs.jafc.3c09649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Dityrosine (Dityr) has been detected in commercial food as a product of protein oxidation and has been shown to pose a threat to human health. This study aims to investigate whether Dityr causes a decrease in lactic acid metabolism in the gastrocnemius muscle during endurance exercise. C57BL/6 mice were administered Dityr or saline by gavage for 13 weeks and underwent an endurance exercise test on a treadmill. Dityr caused a severe reduction in motion displacement and endurance time, along with a significant increase in lactic acid accumulation in the blood and gastrocnemius muscle in mice after exercise. Dityr induced significant mitochondrial defects in the gastrocnemius muscle of mice. Additionally, Dityr induced serious oxidative stress in the gastrocnemius muscle, accompanied by inflammation, which might be one of the causes of mitochondrial dysfunction. Moreover, significant apoptosis in the gastrocnemius muscle increased after exposure to Dityr. This study confirmed that Dityr induced oxidative stress in the gastrocnemius muscle, which further caused significant mitochondrial damage in the gastrocnemius muscle cell, resulting in decreased capacity of lactic acid metabolism and finally affected performance in endurance exercise. This may be one of the possible mechanisms by which highly oxidized foods cause a decreased muscle energy metabolism.
Collapse
Affiliation(s)
- Qiudong Xia
- Department of Physical Education, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Jinchi Lan
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yuxiang Pan
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yuxin Wang
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Tianyuan Song
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Ying Yang
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xu Tian
- Beijing Competitor Sports Nutrition Research Institute, Beijing 100027, China
| | - Longjun Chen
- Huzhou Shengtao Biotechnology LLC, Huzhou 313000, China
| | - Zhenyu Gu
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yin-Yi Ding
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| |
Collapse
|
2
|
Gitego N, Agianian B, Mak OW, Kumar Mv V, Cheng EH, Gavathiotis E. Chemical modulation of cytosolic BAX homodimer potentiates BAX activation and apoptosis. Nat Commun 2023; 14:8381. [PMID: 38104127 PMCID: PMC10725471 DOI: 10.1038/s41467-023-44084-3] [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: 01/17/2023] [Accepted: 11/29/2023] [Indexed: 12/19/2023] Open
Abstract
The BCL-2 family protein BAX is a major regulator of physiological and pathological cell death. BAX predominantly resides in the cytosol in a quiescent state and upon stress, it undergoes conformational activation and mitochondrial translocation leading to mitochondrial outer membrane permeabilization, a critical event in apoptosis execution. Previous studies reported two inactive conformations of cytosolic BAX, a monomer and a dimer, however, it remains unclear how they regulate BAX. Here we show that, surprisingly, cancer cell lines express cytosolic inactive BAX dimers and/or monomers. Expression of inactive dimers, results in reduced BAX activation, translocation and apoptosis upon pro-apoptotic drug treatments. Using the inactive BAX dimer structure and a pharmacophore-based drug screen, we identify a small-molecule modulator, BDM19 that binds and activates cytosolic BAX dimers and prompts cells to apoptosis either alone or in combination with BCL-2/BCL-XL inhibitor Navitoclax. Our findings underscore the role of the cytosolic inactive BAX dimer in resistance to apoptosis and demonstrate a strategy to potentiate BAX-mediated apoptosis.
Collapse
Affiliation(s)
- Nadege Gitego
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
- Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Bogos Agianian
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
- Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Oi Wei Mak
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
- Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Vasantha Kumar Mv
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
- Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Emily H Cheng
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Weill Cornell Medicine, New York, NY, USA
| | - Evripidis Gavathiotis
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA.
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA.
- Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA.
| |
Collapse
|
3
|
Robin AY, Miller MS, Iyer S, Shi MX, Wardak AZ, Lio D, Smith NA, Smith BJ, Birkinshaw RW, Czabotar PE, Kluck RM, Colman PM. Structure of the BAK-activating antibody 7D10 bound to BAK reveals an unexpected role for the α1-α2 loop in BAK activation. Cell Death Differ 2022; 29:1757-1768. [PMID: 35279694 PMCID: PMC9433411 DOI: 10.1038/s41418-022-00961-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 02/13/2022] [Accepted: 02/17/2022] [Indexed: 11/08/2022] Open
Abstract
Pro-apoptotic BAK and BAX are activated by BH3-only proteins to permeabilise the outer mitochondrial membrane. The antibody 7D10 also activates BAK on mitochondria and its epitope has previously been mapped to BAK residues in the loop connecting helices α1 and α2 of BAK. A crystal structure of the complex between the Fv fragment of 7D10 and the BAK mutant L100A suggests a possible mechanism of activation involving the α1-α2 loop residue M60. M60 mutants of BAK have reduced stability and elevated sensitivity to activation by BID, illustrating that M60, through its contacts with residues in helices α1, α5 and α6, is a linchpin stabilising the inert, monomeric structure of BAK. Our data demonstrate that BAK's α1-α2 loop is not a passive covalent connector between secondary structure elements, but a direct restraint on BAK's activation.
Collapse
Affiliation(s)
- Adeline Y Robin
- Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Michelle S Miller
- Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Sweta Iyer
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Melissa X Shi
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Ahmad Z Wardak
- Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Daisy Lio
- Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Nicholas A Smith
- Department of Chemistry and Physics, La Trobe Institute for Molecular Sciences, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Brian J Smith
- Department of Chemistry and Physics, La Trobe Institute for Molecular Sciences, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Richard W Birkinshaw
- Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Peter E Czabotar
- Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Ruth M Kluck
- Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia.
| | - Peter M Colman
- Structural Biology Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Melbourne, VIC, 3052, Australia.
| |
Collapse
|
4
|
Lockshin RA, Cummings MC. The power of an idea: Andrew Wyllie. Cell Death Differ 2022; 29:1671-1672. [PMID: 35871230 PMCID: PMC9433440 DOI: 10.1038/s41418-022-01043-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 06/27/2022] [Indexed: 11/09/2022] Open
Affiliation(s)
- Richard A Lockshin
- Department of Biology, Queens College of the City University of New York, Flushing, NY, USA.
- St. Johns University, Jamaica, NY, USA.
| | - Margaret C Cummings
- University of Queensland Centre for Clinical Research, Brisbane, QLD, Australia.
- Department of Anatomical Pathology, Pathology Queensland, Brisbane, QLD, Australia.
| |
Collapse
|
5
|
Guida AM, Sensi B, Formica V, D'Angelillo RM, Roselli M, Del Vecchio Blanco G, Rossi P, Capolupo GT, Caricato M, Sica GS. Total neoadjuvant therapy for the treatment of locally advanced rectal cancer: a systematic minireview. Biol Direct 2022; 17:16. [PMID: 35698084 PMCID: PMC9195214 DOI: 10.1186/s13062-022-00329-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 05/30/2022] [Indexed: 12/13/2022] Open
Abstract
Colorectal carcinoma is the second leading cause of cancer-related deaths, and indeed, rectal cancer accounting for approximately one third of newly diagnosed patients. Gold standard in the treatment of rectal cancer is a multimodality approach, aiming at a good control of the local disease. Distant recurrences are the major cause of mortality. Currently, Locally Advanced Rectal Cancer (LARC) patients undergo a combined treatment of chemotherapy and radiotherapy, followed by surgery. Eventually, more chemotherapy, namely adjuvant chemotherapy (aCT), may be necessary. Total Neoadjuvant Therapy (TNT) is an emerging approach aimed to reduce distant metastases and improve local control. Several ongoing studies are analyzing whether this new approach could improve oncological outcomes. Published results were encouraging, but the heterogeneity of protocols in use, makes the comparison and interpretation of data rather complex. One of the major concerns regarding TNT administration is related to its effect on larger and more advanced cancers that might not undergo similar down-staging as smaller, early-stage tumors. This minireview, based on a systematic literature search of randomized clinical trials and meta-analysis, summarizes current knowledge on TNT. The aim was to confirm or refute whether or not current practice of TNT is based on relevant evidence, to establish the quality of that evidence, and to address any uncertainty or variation in practice that may be occurring. A tentative grouping of general study characteristics, clinical features and treatments characteristics has been undertaken to evaluate if the reported studies are sufficiently homogeneous in terms of subjects involved, interventions, and outcomes to provide a meaningful idea of which patients are more likely to gain from this treatment.
Collapse
Affiliation(s)
- Andrea M Guida
- Department of Surgery, Minimally Invasive Unit, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Bruno Sensi
- Department of Surgery, Minimally Invasive Unit, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Vincenzo Formica
- Department of Systems Medicine, Medical Oncology Unit, Policlinico Tor Vergata, Rome, Italy
| | - Rolando M D'Angelillo
- Department of Biomedicine and Prevention, Radiation Oncology, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Mario Roselli
- Department of Systems Medicine, Medical Oncology Unit, Policlinico Tor Vergata, Rome, Italy
| | | | - Piero Rossi
- Department of Surgery, Minimally Invasive Unit, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Gabriella T Capolupo
- Department of Colorectal Surgery, Colorectal Surgery Unit, Campus Bio-Medico University, 00128, Rome, Italy
| | - Marco Caricato
- Department of Colorectal Surgery, Colorectal Surgery Unit, Campus Bio-Medico University, 00128, Rome, Italy
| | - Giuseppe S Sica
- Department of Surgery, Minimally Invasive Unit, University of Rome Tor Vergata, 00133, Rome, Italy. .,Department of Surgery, Policlinico Tor Vergata, University of Rome, Tor Vergata, Viale Oxford 81, 00133, Rome, Italy.
| |
Collapse
|
6
|
Gil M, Hanna MR, Gama V. A taste of the early steps in BAX activation with FLAMBE. CELL REPORTS METHODS 2022; 2:100190. [PMID: 35475223 PMCID: PMC9017131 DOI: 10.1016/j.crmeth.2022.100190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The activation of BAX through intricate intramolecular changes is critical for apoptosis. In this issue of Cell Reports Methods, Gelles et al. report engineering FLAMBE, an elegant fluorescence polarization ligand assay for monitoring the early activation of monomeric BAX via real-time release of a peptide probe, expanding the repertoire of BAX activation assays to the single-molecule level.
Collapse
Affiliation(s)
- Melanie Gil
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN, USA
- Neuroscience Graduate Program, Vanderbilt University, Nashville, TN, USA
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, USA
| | - Marina R. Hanna
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN, USA
- Neuroscience Graduate Program, Vanderbilt University, Nashville, TN, USA
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, USA
| | - Vivian Gama
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN, USA
- Neuroscience Graduate Program, Vanderbilt University, Nashville, TN, USA
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, USA
- Vanderbilt Center for Stem Cell Biology, Vanderbilt University, Nashville, TN, USA
| |
Collapse
|
7
|
Physiological and pharmacological modulation of BAX. Trends Pharmacol Sci 2022; 43:206-220. [PMID: 34848097 PMCID: PMC8840970 DOI: 10.1016/j.tips.2021.11.001] [Citation(s) in RCA: 77] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/30/2021] [Accepted: 11/01/2021] [Indexed: 01/29/2023]
Abstract
Bcl-2-associated X protein (BAX) is a critical executioner of mitochondrial regulated cell death through its lethal activity of permeabilizing the mitochondrial outer membrane (MOM). While the physiological function of BAX ensures tissue homeostasis, dysregulation of BAX leads to aberrant cell death. Despite BAX being a promising therapeutic target for human diseases, historically the development of drugs has focused on antiapoptotic BCL-2 proteins, due to challenges in elucidating the mechanism of BAX activation and identifying druggable surfaces of BAX. Here, we discuss recent studies that have provided structure-function insights and identified regulatory surfaces that control BAX activation. Moreover, we emphasize the development of small molecule orthosteric, allosteric, and oligomerization modulators that provide novel opportunities for biological investigation and progress towards drugging BAX.
Collapse
|