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Yao H, Jiang W, Liao X, Wang D, Zhu H. Regulatory mechanisms of amino acids in ferroptosis. Life Sci 2024; 351:122803. [PMID: 38857653 DOI: 10.1016/j.lfs.2024.122803] [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: 03/12/2024] [Revised: 05/19/2024] [Accepted: 06/04/2024] [Indexed: 06/12/2024]
Abstract
Ferroptosis, an iron-dependent non-apoptotic regulated cell death process, is associated with the pathogenesis of various diseases. Amino acids, which are indispensable substrates of vital activities, significantly regulate ferroptosis. Amino acid metabolism is involved in maintaining iron and lipid homeostasis and redox balance. The regulatory effects of amino acids on ferroptosis are complex. An amino acid may exert contrasting effects on ferroptosis depending on the context. This review systematically and comprehensively summarized the distinct roles of amino acids in regulating ferroptosis and highlighted the emerging opportunities to develop clinical therapeutic strategies targeting amino acid-mediated ferroptosis.
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Affiliation(s)
- Heying Yao
- Institute of Medical Imaging and Artificial Intelligence, Jiangsu University, Zhenjiang 212001, China
| | - Wei Jiang
- Institute of Medical Imaging and Artificial Intelligence, Jiangsu University, Zhenjiang 212001, China
| | - Xiang Liao
- Institute of Medical Imaging and Artificial Intelligence, Jiangsu University, Zhenjiang 212001, China
| | - Dongqing Wang
- Institute of Medical Imaging and Artificial Intelligence, Jiangsu University, Zhenjiang 212001, China; Department of Medical Imaging, The Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China.
| | - Haitao Zhu
- Institute of Medical Imaging and Artificial Intelligence, Jiangsu University, Zhenjiang 212001, China; Department of Medical Imaging, The Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China.
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Babu Balagopal P, Kohli R, Uppal V, Averill L, Shah C, McGoogan K, Di Guglielmo M, Goran M, Hossain MJ. Effect of N-acetyl cysteine in children with metabolic dysfunction-associated steatotic liver disease-A pilot study. J Pediatr Gastroenterol Nutr 2024. [PMID: 38973318 DOI: 10.1002/jpn3.12312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 04/08/2024] [Accepted: 05/03/2024] [Indexed: 07/09/2024]
Abstract
BACKGROUND Prevalence of metabolic dysfunction-associated steatotic liver disease (MASLD), previously known as nonalcoholic fatty liver disease (NAFLD), and its sequelae of more severe forms such as metabolic dysfunction-associated steatohepatitis (MASH) is rapidly increasing in children with the rise in obesity. Successful and sustainable treatments for MASLD are lacking in children. We determined the therapeutic effect of N-acetyl cysteine (NAC) on biomarkers of oxidative stress, inflammation and insulin resistance (IR), liver enzymes, liver fat fraction (LFF) and (LS) in children with obesity and biopsy-confirmed MASLD. METHODS Thirteen children (n = 13; age: 13.6 ± 2.8 years; NAS score >2) underwent a double-blind, placebo-controlled trial of NAC (either 600 or 1200 mg NAC/day) or placebo for 16 weeks. Measurements included LFF (magnetic resonance imaging), LS (ultrasound elastography), and body composition. Erythrocyte glutathione (GSH), liver enzymes, insulin, glucose, adiponectin, high-sensitivity c-reactive protein (hs-CRP), and interleukin-6 (IL-6) were also measured. HOMA-IR was calculated. RESULTS Sixteen-week NAC treatment improved (baseline adjusted between-group p < .05 for all) markers of inflammation (IL-6 and hs-CRP), oxidative stress (GSH), and insulin resistance (HOMA-IR) and reduced liver enzymes, LFF and LS. Body weight and body composition did not show beneficial changes. CONCLUSIONS Sixteen-week NAC treatment was well tolerated in children with obesity and MASLD and led to improvements in oxidative stress, inflammation and IR and liver outcomes. The results from this pilot study support further investigation of NAC as a therapeutic agent in children with MASLD.
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Affiliation(s)
- P Babu Balagopal
- Department of Research and Pediatrics, Nemours Children's Health, Jacksonville, Florida, USA
- Department of Pediatrics, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Rohit Kohli
- Department of Pediatrics, University of South California, Los Angeles, California, USA
| | - Vikas Uppal
- Department of Pediatrics, Nemours Children's Health, Wilmington, Delaware, USA
| | - Lauren Averill
- Department of Pediatrics, Nemours Children's Health, Wilmington, Delaware, USA
| | - Chetan Shah
- Department of Research and Pediatrics, Nemours Children's Health, Jacksonville, Florida, USA
| | - Katherine McGoogan
- Department of Research and Pediatrics, Nemours Children's Health, Jacksonville, Florida, USA
| | | | - Michael Goran
- Department of Pediatrics, University of South California, Los Angeles, California, USA
| | - Md Jobayer Hossain
- Department of Pediatrics, Nemours Children's Health, Wilmington, Delaware, USA
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Bjørklund G, Oliinyk P, Khavrona O, Lozynska I, Lysiuk R, Darmohray R, Antonyak H, Dub N, Zayachuk V, Antoniv O, Rybak O, Peana M. The Effects of Fisetin and Curcumin on Oxidative Damage Caused by Transition Metals in Neurodegenerative Diseases. Mol Neurobiol 2024:10.1007/s12035-024-04321-2. [PMID: 38970766 DOI: 10.1007/s12035-024-04321-2] [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: 12/28/2023] [Accepted: 06/19/2024] [Indexed: 07/08/2024]
Abstract
Neurodegenerative diseases pose a significant health challenge for the elderly. The escalating presence of toxic metals and chemicals in the environment is a potential contributor to central nervous system dysfunction and the onset of neurodegenerative conditions. Transition metals play a crucial role in various pathophysiological mechanisms associated with prevalent neurodegenerative diseases such as Alzheimer's and Parkinson's. Given the ubiquitous exposure to metals from diverse sources in everyday life, the workplace, and the environment, most of the population faces regular contact with different forms of these metals. Disturbances in the levels and homeostasis of certain transition metals are closely linked to the manifestation of neurodegenerative disorders. Oxidative damage further exacerbates the progression of neurological consequences. Presently, there exists no curative therapy for individuals afflicted by neurodegenerative diseases, with treatment approaches primarily focusing on alleviating pathological symptoms. Within the realm of biologically active compounds derived from plants, flavonoids and curcuminoids stand out for their extensively documented antioxidant, antiplatelet, and neuroprotective properties. The utilization of these compounds holds the potential to formulate highly effective therapeutic strategies for managing neurodegenerative diseases. This review provides a comprehensive overview of the impact of abnormal metal levels, particularly copper, iron, and zinc, on the initiation and progression of neurodegenerative diseases. Additionally, it aims to elucidate the potential of fisetin and curcumin to inhibit or decelerate the neurodegenerative process.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine (CONEM), Toften 24, 8610, Mo I Rana, Norway.
| | - Petro Oliinyk
- Department of Disaster Medicine and Military Medicine, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
| | - Oksana Khavrona
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
- Department of Biological Chemistry, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
| | - Iryna Lozynska
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
- Department of Biological Chemistry, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
| | - Roman Lysiuk
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
- Department of Pharmacognosy and Botany, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
| | - Roman Darmohray
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
- Department of Pharmacognosy and Botany, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
| | - Halyna Antonyak
- Department of Ecology, Ivan Franko National University of Lviv, Lviv, 79005, Ukraine
| | - Natalia Dub
- Andrei Krupynskyi Lviv Medical Academy, Lviv, 79000, Ukraine
| | - Vasyl Zayachuk
- Department of Botany, Ukrainian National Forestry University, Wood Science and Non-Wood Forest Products, Lviv, 79057, Ukraine
| | - Olha Antoniv
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
- Department of Pharmacology, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
| | - Oksana Rybak
- CONEM Ukraine Life Science Research Group, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
- Department of Pharmacognosy and Botany, Danylo Halytsky Lviv National Medical University, Lviv, 79010, Ukraine
| | - Massimiliano Peana
- Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, 07100, Sassari, Italy.
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Dhas N, Kudarha R, Tiwari R, Tiwari G, Garg N, Kumar P, Kulkarni S, Kulkarni J, Soman S, Hegde AR, Patel J, Garkal A, Sami A, Datta D, Colaco V, Mehta T, Vora L, Mutalik S. Recent advancements in nanomaterial-mediated ferroptosis-induced cancer therapy: Importance of molecular dynamics and novel strategies. Life Sci 2024; 346:122629. [PMID: 38631667 DOI: 10.1016/j.lfs.2024.122629] [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: 11/23/2023] [Revised: 03/04/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
Ferroptosis is a novel type of controlled cell death resulting from an imbalance between oxidative harm and protective mechanisms, demonstrating significant potential in combating cancer. It differs from other forms of cell death, such as apoptosis and necrosis. Molecular therapeutics have hard time playing the long-acting role of ferroptosis induction due to their limited water solubility, low cell targeting capacity, and quick metabolism in vivo. To this end, small molecule inducers based on biological factors have long been used as strategy to induce cell death. Research into ferroptosis and advancements in nanotechnology have led to the discovery that nanomaterials are superior to biological medications in triggering ferroptosis. Nanomaterials derived from iron can enhance ferroptosis induction by directly releasing large quantities of iron and increasing cell ROS levels. Moreover, utilizing nanomaterials to promote programmed cell death minimizes the probability of unfavorable effects induced by mutations in cancer-associated genes such as RAS and TP53. Taken together, this review summarizes the molecular mechanisms involved in ferroptosis along with the classification of ferroptosis induction. It also emphasized the importance of cell organelles in the control of ferroptosis in cancer therapy. The nanomaterials that trigger ferroptosis are categorized and explained. Iron-based and noniron-based nanomaterials with their characterization at the molecular and cellular levels have been explored, which will be useful for inducing ferroptosis that leads to reduced tumor growth. Within this framework, we offer a synopsis, which traverses the well-established mechanism of ferroptosis and offers practical suggestions for the design and therapeutic use of nanomaterials.
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Affiliation(s)
- Namdev Dhas
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Ritu Kudarha
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Ruchi Tiwari
- Pranveer Singh Institute of Technology (Pharmacy), Kalpi road, Bhauti, Kanpur 208020, Uttar Pradesh, India
| | - Gaurav Tiwari
- Pranveer Singh Institute of Technology (Pharmacy), Kalpi road, Bhauti, Kanpur 208020, Uttar Pradesh, India
| | - Neha Garg
- Department of Medicinal Chemistry, Faculty of Ayurveda, Institute of Medical Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Praveen Kumar
- Department of Medicinal Chemistry, Faculty of Ayurveda, Institute of Medical Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Sanjay Kulkarni
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Jahnavi Kulkarni
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Soji Soman
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Aswathi R Hegde
- Faculty of Pharmacy, M S Ramaiah University of Applied Sciences, New BEL Road, MSR Nagar, Bangalore 560054, Karnataka, India
| | | | - Atul Garkal
- Department of Pharmaceutics, Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat 382481, India; Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Anam Sami
- Department of Pharmaceutics, Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat 382481, India
| | - Deepanjan Datta
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Viola Colaco
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Tejal Mehta
- Department of Pharmaceutics, Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat 382481, India
| | - Lalitkumar Vora
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India.
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Li Y, Tian X, Luo J, Bao T, Wang S, Wu X. Molecular mechanisms of aging and anti-aging strategies. Cell Commun Signal 2024; 22:285. [PMID: 38790068 PMCID: PMC11118732 DOI: 10.1186/s12964-024-01663-1] [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: 02/03/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
Aging is a complex and multifaceted process involving a variety of interrelated molecular mechanisms and cellular systems. Phenotypically, the biological aging process is accompanied by a gradual loss of cellular function and the systemic deterioration of multiple tissues, resulting in susceptibility to aging-related diseases. Emerging evidence suggests that aging is closely associated with telomere attrition, DNA damage, mitochondrial dysfunction, loss of nicotinamide adenine dinucleotide levels, impaired macro-autophagy, stem cell exhaustion, inflammation, loss of protein balance, deregulated nutrient sensing, altered intercellular communication, and dysbiosis. These age-related changes may be alleviated by intervention strategies, such as calorie restriction, improved sleep quality, enhanced physical activity, and targeted longevity genes. In this review, we summarise the key historical progress in the exploration of important causes of aging and anti-aging strategies in recent decades, which provides a basis for further understanding of the reversibility of aging phenotypes, the application prospect of synthetic biotechnology in anti-aging therapy is also prospected.
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Affiliation(s)
- Yumeng Li
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Xutong Tian
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Juyue Luo
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Tongtong Bao
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences; National Center of Technology Innovation for Synthetic Biology, Tianjin, China
| | - Shujin Wang
- Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Xin Wu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences; National Center of Technology Innovation for Synthetic Biology, Tianjin, China.
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Wu Y, Xiao M, Chen J, Tao Y, Chen A, Lin H, Xu Y, Li L, Jia H, Xue Y, Jia Y, Zheng Z. Association of dietary iron intake with diabetic kidney disease among individuals with diabetes. Endocrine 2024:10.1007/s12020-024-03819-y. [PMID: 38758293 DOI: 10.1007/s12020-024-03819-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 04/02/2024] [Indexed: 05/18/2024]
Abstract
PURPOSE The current study investigated the correlation between dietary iron intake and diabetic kidney disease among diabetic adults. METHODS This cross-sectional study enrolled 8118 participants who suffered from diabetes from the National Health and Nutrition Examination Survey (NHANES) 1999-2018. Dietary iron intake was obtained from 24 h recall interviews, and diabetic kidney disease was defined as eGFR < 60 mL/min per 1.73 m2 or albumin creatinine ratio (ACR) ≥ 30 mg/g. Three weighted logistic regression models were utilized to investigate odd ratio (OR) and 95% CIs for diabetic kidney disease. Stratified analyses were performed by gender, age, BMI, HbA1c, hypertension status, and smoking status, and diabetes types. RESULTS Among 8118 participants (51.6% male, mean age 61.3 years), 40.7% of participants suffered from diabetic kidney disease. With the adjustment of potential covariates, we found that ≥ 12.59 mg of dietary iron was related to a lower risk of diabetic kidney disease (OR = 0.78, 95% CI: 0.63 to 0.96; OR = 0.79, 95% CI: 0.63 to 0.98). In stratified analyses, higher iron intake was negatively related to diabetic kidney disease, especially among those who were male, < 60 years, those with hypertension, those with HbA1c < 7.0%, and those who were ex-smokers. The result remained robust in sensitivity analyses. CONCLUSION We found that ≥ 12.59 mg of dietary iron is associated with a lower risk of diabetic kidney disease, especially in those who were male, younger, heavier weight, have better blood sugar control, and those who were ex-smokers.
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Affiliation(s)
- Yichuan Wu
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
- De Feng Academy, Southern Medical University, Guangzhou, China
| | - Manlu Xiao
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jiaqi Chen
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yuan Tao
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
- De Feng Academy, Southern Medical University, Guangzhou, China
| | - Aomiao Chen
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
- De Feng Academy, Southern Medical University, Guangzhou, China
| | - Huanjia Lin
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
- De Feng Academy, Southern Medical University, Guangzhou, China
| | - Ying Xu
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
- De Feng Academy, Southern Medical University, Guangzhou, China
| | - Linna Li
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongxia Jia
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yaoming Xue
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Yijie Jia
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- De Feng Academy, Southern Medical University, Guangzhou, China.
| | - Zongji Zheng
- Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, China.
- De Feng Academy, Southern Medical University, Guangzhou, China.
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Andrawus M, David GB, Terziyska I, Sharvit L, Bergman A, Barzilai N, Raj SM, Govindaraju DR, Atzmon G. Genome integrity as a potential index of longevity in Ashkenazi Centenarian's families. GeroScience 2024:10.1007/s11357-024-01178-0. [PMID: 38724875 DOI: 10.1007/s11357-024-01178-0] [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: 12/01/2023] [Accepted: 04/24/2024] [Indexed: 06/19/2024] Open
Abstract
The aging process, or senescence, is characterized by age-specific decline in physical and physiological function, and increased frailty and genomic changes, including mutation accumulation. However, the mechanisms through which changes in genomic architecture influence human longevity have remained obscure. Copy number variants (CNVs), an abundant class of genomic variants, offer unique opportunities for understanding age-related genomic changes. Here we report the spectrum of CNVs in a cohort of 670 Ashkenazi Jewish centenarians, their progeny, and unrelated controls. The average ages of these groups were 97.4 ± 2.8, 69.2 ± 9.2, and 66.5 ± 7.0 respectively. For the first time, we compared different size classes of CNVs, from 1 kB to 100 MB in size. Using a high-resolution custom Affymetrix array, targeting 44,639 genomic regions, we identified a total of 12,166, 22,188, and 10,285 CNVs in centenarians, their progeny, and control groups, respectively. Interestingly, the offspring group showed the highest number of unique CNVs, followed by control and centenarians. While both gains and losses were found in all three groups, centenarians showed a significantly higher average number of both total gains and losses relative to their controls (p < 0.0327, 0.0182, respectively). Moreover, centenarians showed a lower total length of genomic material lost, suggesting that they may maintain superior genomic integrity over time. We also observe a significance fold increase of CNVs among the offspring, implying greater genomic integrity and a putative mechanism for longevity preservation. Genomic regions that experienced loss or gains appear to be distributed across many sites in the genome and contain genes involved in DNA transcription, cellular transport, developmental pathways, and metabolic functions. Our findings suggest that the exceptional longevity observed in centenarians may be attributed to the prolonged maintenance of functionally important genes. These genes are intrinsic to specific genomic regions as well as to the overall integrity of the genomic architecture. Additionally, a strong association between longer CNVs and differential gene expression observed in this study supports the notion that genomic integrity could positively influence longevity.
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Affiliation(s)
| | - Gil Ben David
- Sagol Department of Neurobiology, Faculty of Natural Sciences, University of Haifa, 199 Aba Khoushy Ave., 3498838, Mount Carmel, Haifa, Israel
| | | | - Lital Sharvit
- Faculty of Natural Sciences, University of Haifa, Haifa, Israel
| | - Aviv Bergman
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Nir Barzilai
- Departments of Medicine and Genetics, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Srilakshmi M Raj
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | | | - Gil Atzmon
- Faculty of Natural Sciences, University of Haifa, Haifa, Israel.
- Departments of Medicine and Genetics, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
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Alfatah M, Lim JJJ, Zhang Y, Naaz A, Cheng TYN, Yogasundaram S, Faidzinn NA, Lin JJ, Eisenhaber B, Eisenhaber F. Uncharacterized yeast gene YBR238C, an effector of TORC1 signaling in a mitochondrial feedback loop, accelerates cellular aging via HAP4- and RMD9-dependent mechanisms. eLife 2024; 12:RP92178. [PMID: 38713053 PMCID: PMC11076046 DOI: 10.7554/elife.92178] [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] [Indexed: 05/08/2024] Open
Abstract
Uncovering the regulators of cellular aging will unravel the complexity of aging biology and identify potential therapeutic interventions to delay the onset and progress of chronic, aging-related diseases. In this work, we systematically compared genesets involved in regulating the lifespan of Saccharomyces cerevisiae (a powerful model organism to study the cellular aging of humans) and those with expression changes under rapamycin treatment. Among the functionally uncharacterized genes in the overlap set, YBR238C stood out as the only one downregulated by rapamycin and with an increased chronological and replicative lifespan upon deletion. We show that YBR238C and its paralog RMD9 oppositely affect mitochondria and aging. YBR238C deletion increases the cellular lifespan by enhancing mitochondrial function. Its overexpression accelerates cellular aging via mitochondrial dysfunction. We find that the phenotypic effect of YBR238C is largely explained by HAP4- and RMD9-dependent mechanisms. Furthermore, we find that genetic- or chemical-based induction of mitochondrial dysfunction increases TORC1 (Target of Rapamycin Complex 1) activity that, subsequently, accelerates cellular aging. Notably, TORC1 inhibition by rapamycin (or deletion of YBR238C) improves the shortened lifespan under these mitochondrial dysfunction conditions in yeast and human cells. The growth of mutant cells (a proxy of TORC1 activity) with enhanced mitochondrial function is sensitive to rapamycin whereas the growth of defective mitochondrial mutants is largely resistant to rapamycin compared to wild type. Our findings demonstrate a feedback loop between TORC1 and mitochondria (the TORC1-MItochondria-TORC1 (TOMITO) signaling process) that regulates cellular aging processes. Hereby, YBR238C is an effector of TORC1 modulating mitochondrial function.
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Affiliation(s)
- Mohammad Alfatah
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Jolyn Jia Jia Lim
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Yizhong Zhang
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Arshia Naaz
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Trishia Yi Ning Cheng
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Sonia Yogasundaram
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Nashrul Afiq Faidzinn
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Jovian Jing Lin
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Birgit Eisenhaber
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- LASA – Lausitz Advanced Scientific Applications gGmbHWeißwasserGermany
| | - Frank Eisenhaber
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- LASA – Lausitz Advanced Scientific Applications gGmbHWeißwasserGermany
- School of Biological Sciences (SBS), Nanyang Technological University (NTU)SingaporeSingapore
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Xiao T, English AM, Wilson ZN, Maschek J, Cox JE, Hughes AL. The phospholipids cardiolipin and phosphatidylethanolamine differentially regulate MDC biogenesis. J Cell Biol 2024; 223:e202302069. [PMID: 38497895 PMCID: PMC10949074 DOI: 10.1083/jcb.202302069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 01/04/2024] [Accepted: 02/20/2024] [Indexed: 03/19/2024] Open
Abstract
Cells utilize multiple mechanisms to maintain mitochondrial homeostasis. We recently characterized a pathway that remodels mitochondria in response to metabolic alterations and protein overload stress. This remodeling occurs via the formation of large membranous structures from the mitochondrial outer membrane called mitochondrial-derived compartments (MDCs), which are eventually released from mitochondria and degraded. Here, we conducted a microscopy-based screen in budding yeast to identify factors that regulate MDC formation. We found that two phospholipids, cardiolipin (CL) and phosphatidylethanolamine (PE), differentially regulate MDC biogenesis. CL depletion impairs MDC biogenesis, whereas blocking mitochondrial PE production leads to constitutive MDC formation. Additionally, in response to metabolic MDC activators, cellular and mitochondrial PE declines, and overexpressing mitochondrial PE synthesis enzymes suppress MDC biogenesis. Altogether, our data indicate a requirement for CL in MDC biogenesis and suggest that PE depletion may stimulate MDC formation downstream of MDC-inducing metabolic stress.
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Affiliation(s)
- Tianyao Xiao
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Alyssa M. English
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Zachary N. Wilson
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - J.Alan. Maschek
- Metabolomics Core Research Facility, University of Utah, Salt Lake City, UT, USA
- Department of Nutrition and Integration. Physiology, University of Utah College of Health, Salt Lake City, UT, USA
| | - James E. Cox
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
- Metabolomics Core Research Facility, University of Utah, Salt Lake City, UT, USA
| | - Adam L. Hughes
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
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10
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Wang R, Sun H, Cao Y, Zhang Z, Chen Y, Wang X, Liu L, Wu J, Xu H, Wu D, Mu C, Hao Z, Qin S, Ren H, Han J, Fang M, Wang G. Glucosylceramide accumulation in microglia triggers STING-dependent neuroinflammation and neurodegeneration in mice. Sci Signal 2024; 17:eadk8249. [PMID: 38530880 DOI: 10.1126/scisignal.adk8249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 03/06/2024] [Indexed: 03/28/2024]
Abstract
Mutations in the gene encoding the lysosomal enzyme glucocerebrosidase (GCase) are responsible for Gaucher disease (GD) and are considered the strongest genetic risk factor for Parkinson's disease (PD) and Lewy body dementia (LBD). GCase deficiency leads to extensive accumulation of glucosylceramides (GCs) in cells and contributes to the neuropathology of GD, PD, and LBD by triggering chronic neuroinflammation. Here, we investigated the mechanisms by which GC accumulation induces neuroinflammation. We found that GC accumulation within microglia induced by pharmacological inhibition of GCase triggered STING-dependent inflammation, which contributed to neuronal loss both in vitro and in vivo. GC accumulation in microglia induced mitochondrial DNA (mtDNA) leakage to the cytosol to trigger STING-dependent inflammation. Rapamycin, a compound that promotes lysosomal activity, improved mitochondrial function, thereby decreasing STING signaling. Furthermore, lysosomal damage caused by GC accumulation led to defects in the degradation of activated STING, further exacerbating inflammation mediated by microglia. Thus, limiting STING activity may be a strategy to suppress neuroinflammation caused by GCase deficiency.
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Affiliation(s)
- Rui Wang
- School of Life Science and Technology, Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, Jiangsu 210096, China
- Center of Translational Medicine, First People's Hospital of Taicang, Taicang Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215400, China
| | - Hongyang Sun
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yifan Cao
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Zhixiong Zhang
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yajing Chen
- Department of Pharmacy, Children's Hospital of Soochow University, Suzhou, Jiangsu 215000, China
| | - Xiying Wang
- Department of Neurology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai 200000, China
| | - Lele Liu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Jin Wu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Hao Xu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Dan Wu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Chenchen Mu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Zongbing Hao
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Song Qin
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fudan University, Shanghai 200000, China
| | - Haigang Ren
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
- Jiangsu Provincial Medical Innovation Center of Trauma Medicine, Institute of Trauma Medicine, Suzhou, Jiangsu 215123, China
- MOE Key Laboratory of Geriatric Diseases and Immunology, Soochow University, Suzhou, Jiangsu 215123, China
| | - Junhai Han
- School of Life Science and Technology, Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, Jiangsu 210096, China
| | - Ming Fang
- School of Life Science and Technology, Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, Jiangsu 210096, China
| | - Guanghui Wang
- Center of Translational Medicine, First People's Hospital of Taicang, Taicang Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215400, China
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
- MOE Key Laboratory of Geriatric Diseases and Immunology, Soochow University, Suzhou, Jiangsu 215123, China
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11
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Rathor L, Curry S, Park Y, McElroy T, Robles B, Sheng Y, Chen WW, Min K, Xiao R, Lee MH, Han SM. Mitochondrial stress in GABAergic neurons non-cell autonomously regulates organismal health and aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.20.585932. [PMID: 38585797 PMCID: PMC10996468 DOI: 10.1101/2024.03.20.585932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Mitochondrial stress within the nervous system can trigger non-cell autonomous responses in peripheral tissues. However, the specific neurons involved and their impact on organismal aging and health have remained incompletely understood. Here, we demonstrate that mitochondrial stress in γ-aminobutyric acid-producing (GABAergic) neurons in Caenorhabditis elegans ( C. elegans ) is sufficient to significantly alter organismal lifespan, stress tolerance, and reproductive capabilities. This mitochondrial stress also leads to significant changes in mitochondrial mass, energy production, and levels of reactive oxygen species (ROS). DAF-16/FoxO activity is enhanced by GABAergic neuronal mitochondrial stress and mediates the induction of these non-cell-autonomous effects. Moreover, our findings indicate that GABA signaling operates within the same pathway as mitochondrial stress in GABAergic neurons, resulting in non-cell-autonomous alterations in organismal stress tolerance and longevity. In summary, these data suggest the crucial role of GABAergic neurons in detecting mitochondrial stress and orchestrating non-cell-autonomous changes throughout the organism.
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12
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R K, Kumar A, Vinod Kumar K, Sengupta A, Kundal K, Sharma S, Pawar A, Krishna PS, Alfatah M, Ray S, Tiwari B, Kumar R. AagingBase: a comprehensive database of anti-aging peptides. Database (Oxford) 2024; 2024:baae016. [PMID: 38470883 PMCID: PMC10930205 DOI: 10.1093/database/baae016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/07/2024] [Accepted: 03/05/2024] [Indexed: 03/14/2024]
Abstract
The process of aging is an intrinsic and inevitable aspect of life that impacts every living organism. As biotechnological advancements continue to shape our understanding of medicine, peptide therapeutics have emerged as a promising strategy for anti-aging interventions. This is primarily due to their favorable attributes, such as low immunogenicity and cost-effective production. Peptide-based treatments have garnered widespread acceptance and interest in aging research, particularly in the context of age-related therapies. To effectively develop anti-aging treatments, a comprehensive understanding of the physicochemical characteristics of anti-aging peptides is essential. Factors such as amino acid composition, instability index, hydrophobic areas and other relevant properties significantly determine their efficacy as potential therapeutic agents. Consequently, the creation of 'AagingBase', a comprehensive database for anti-aging peptides, aims to facilitate research on aging by leveraging the potential of peptide therapies. AagingBase houses experimentally validated 282 anti-aging peptides collected from 54 research articles and 236 patents. Employing state-of-the-art computational techniques, the acquired sequences have undergone rigorous physicochemical calculations. Furthermore, AagingBase presents users with various informative analyses highlighting atomic compositions, secondary structure fractions, tertiary structure, amino acid compositions and frequencies. The database also offers advanced search and filtering options and similarity search, thereby aiding researchers in understanding their biological functions. Hence, the database enables efficient identification and prioritization of potential peptide candidates in geriatric medicine and holds immense potential for advancing geriatric medicine research and innovations. AagingBase can be accessed without any restriction. Database URL: https://project.iith.ac.in/cgntlab/aagingbase/.
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Affiliation(s)
- Kunjulakshmi R
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Telangana 502284, India
- Department of Biological Sciences, Indian Institute of Science Education and Research, Berhampur, Odisha 760010, India
| | - Ambuj Kumar
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Telangana 502284, India
| | - Keerthana Vinod Kumar
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Telangana 502284, India
| | - Avik Sengupta
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Telangana 502284, India
| | - Kavita Kundal
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Telangana 502284, India
| | - Simran Sharma
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Telangana 502284, India
| | - Ankita Pawar
- School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Clappana P.O., Kollam, Kerala 690525, India
| | - Pithani Sai Krishna
- School of Biotechnology, Amrita Vishwa Vidyapeetham, Amritapuri, Clappana P.O., Kollam, Kerala 690525, India
| | - Mohammad Alfatah
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), 30 Biopolis Street, Matrix #07-01, Singapore 138671, Republic of Singapore
| | - Sandipan Ray
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Telangana 502284, India
| | - Bhavana Tiwari
- Department of Biological Sciences, Indian Institute of Science Education and Research, Berhampur, Odisha 760010, India
| | - Rahul Kumar
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Telangana 502284, India
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13
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Kao YR, Chen J, Kumari R, Ng A, Zintiridou A, Tatiparthy M, Ma Y, Aivalioti MM, Moulik D, Sundaravel S, Sun D, Reisz JA, Grimm J, Martinez-Lopez N, Stransky S, Sidoli S, Steidl U, Singh R, D'Alessandro A, Will B. An iron rheostat controls hematopoietic stem cell fate. Cell Stem Cell 2024; 31:378-397.e12. [PMID: 38402617 PMCID: PMC10939794 DOI: 10.1016/j.stem.2024.01.011] [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: 05/25/2023] [Revised: 12/20/2023] [Accepted: 01/30/2024] [Indexed: 02/27/2024]
Abstract
Mechanisms governing the maintenance of blood-producing hematopoietic stem and multipotent progenitor cells (HSPCs) are incompletely understood, particularly those regulating fate, ensuring long-term maintenance, and preventing aging-associated stem cell dysfunction. We uncovered a role for transitory free cytoplasmic iron as a rheostat for adult stem cell fate control. We found that HSPCs harbor comparatively small amounts of free iron and show the activation of a conserved molecular response to limited iron-particularly during mitosis. To study the functional and molecular consequences of iron restriction, we developed models allowing for transient iron bioavailability limitation and combined single-molecule RNA quantification, metabolomics, and single-cell transcriptomic analyses with functional studies. Our data reveal that the activation of the limited iron response triggers coordinated metabolic and epigenetic events, establishing stemness-conferring gene regulation. Notably, we find that aging-associated cytoplasmic iron loading reversibly attenuates iron-dependent cell fate control, explicating intervention strategies for dysfunctional aged stem cells.
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Affiliation(s)
- Yun-Ruei Kao
- Department of Oncology, Albert Einstein College of Medicine, New York, NY, USA.
| | - Jiahao Chen
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Rajni Kumari
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Anita Ng
- Karches Center for Oncology Research, the Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Aliona Zintiridou
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Madhuri Tatiparthy
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Yuhong Ma
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Maria M Aivalioti
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Deeposree Moulik
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Sriram Sundaravel
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Daqian Sun
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Juliane Grimm
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Nuria Martinez-Lopez
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA, USA; Vatche and Tamar Manoukian Division of Digestive Diseases, University of California, Los Angeles, Los Angeles, CA, USA; Comprehensive Liver Research Center at University of California Los Angeles, CA, USA
| | - Stephanie Stransky
- Department of Biochemistry, Albert Einstein College of Medicine, New York, NY, USA
| | - Simone Sidoli
- Department of Biochemistry, Albert Einstein College of Medicine, New York, NY, USA
| | - Ulrich Steidl
- Department of Oncology, Albert Einstein College of Medicine, New York, NY, USA; Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA; Ruth L. and David S. Gottesman Institute for Stem Cell Research and Regenerative Medicine, Albert Einstein College of Medicine, New York, NY, USA; Blood Cancer Institute, Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA; Cancer Dormancy and Tumor Microenvironment Institute, Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rajat Singh
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA, USA; Vatche and Tamar Manoukian Division of Digestive Diseases, University of California, Los Angeles, Los Angeles, CA, USA; Comprehensive Liver Research Center at University of California Los Angeles, CA, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Britta Will
- Department of Oncology, Albert Einstein College of Medicine, New York, NY, USA; Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA; Ruth L. and David S. Gottesman Institute for Stem Cell Research and Regenerative Medicine, Albert Einstein College of Medicine, New York, NY, USA; Blood Cancer Institute, Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA; Cancer Dormancy and Tumor Microenvironment Institute, Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA; Institute for Aging Studies, Albert Einstein College of Medicine, New York, NY, USA.
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14
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Suda K, Moriyama Y, Razali N, Chiu Y, Masukagami Y, Nishimura K, Barbee H, Takase H, Sugiyama S, Yamazaki Y, Sato Y, Higashiyama T, Johmura Y, Nakanishi M, Kono K. Plasma membrane damage limits replicative lifespan in yeast and induces premature senescence in human fibroblasts. NATURE AGING 2024; 4:319-335. [PMID: 38388781 PMCID: PMC10950784 DOI: 10.1038/s43587-024-00575-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 01/26/2024] [Indexed: 02/24/2024]
Abstract
Plasma membrane damage (PMD) occurs in all cell types due to environmental perturbation and cell-autonomous activities. However, cellular outcomes of PMD remain largely unknown except for recovery or death. In this study, using budding yeast and normal human fibroblasts, we found that cellular senescence-stable cell cycle arrest contributing to organismal aging-is the long-term outcome of PMD. Our genetic screening using budding yeast unexpectedly identified a close genetic association between PMD response and replicative lifespan regulations. Furthermore, PMD limits replicative lifespan in budding yeast; upregulation of membrane repair factors ESCRT-III (SNF7) and AAA-ATPase (VPS4) extends it. In normal human fibroblasts, PMD induces premature senescence via the Ca2+-p53 axis but not the major senescence pathway, DNA damage response pathway. Transient upregulation of ESCRT-III (CHMP4B) suppressed PMD-dependent senescence. Together with mRNA sequencing results, our study highlights an underappreciated but ubiquitous senescent cell subtype: PMD-dependent senescent cells.
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Affiliation(s)
- Kojiro Suda
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yohsuke Moriyama
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Nurhanani Razali
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yatzu Chiu
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yumiko Masukagami
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Koutarou Nishimura
- Department of Hematology-Oncology, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Hyogo, Japan
| | - Hunter Barbee
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Hiroshi Takase
- Core Laboratory, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Shinju Sugiyama
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yuta Yamazaki
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yoshikatsu Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
| | - Tetsuya Higashiyama
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
- Department of Biological Science, Graduate School of Science, University of Tokyo, Tokyo, Japan
| | - Yoshikazu Johmura
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Keiko Kono
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan.
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15
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Warnhoff K, Bhattacharya S, Snoozy J, Breen PC, Ruvkun G. Hypoxia-inducible factor induces cysteine dioxygenase and promotes cysteine homeostasis in Caenorhabditis elegans. eLife 2024; 12:RP89173. [PMID: 38349720 PMCID: PMC10942545 DOI: 10.7554/elife.89173] [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] [Indexed: 02/15/2024] Open
Abstract
Dedicated genetic pathways regulate cysteine homeostasis. For example, high levels of cysteine activate cysteine dioxygenase, a key enzyme in cysteine catabolism in most animal and many fungal species. The mechanism by which cysteine dioxygenase is regulated is largely unknown. In an unbiased genetic screen for mutations that activate cysteine dioxygenase (cdo-1) in the nematode Caenorhabditis elegans, we isolated loss-of-function mutations in rhy-1 and egl-9, which encode proteins that negatively regulate the stability or activity of the oxygen-sensing hypoxia inducible transcription factor (hif-1). EGL-9 and HIF-1 are core members of the conserved eukaryotic hypoxia response. However, we demonstrate that the mechanism of HIF-1-mediated induction of cdo-1 is largely independent of EGL-9 prolyl hydroxylase activity and the von Hippel-Lindau E3 ubiquitin ligase, the classical hypoxia signaling pathway components. We demonstrate that C. elegans cdo-1 is transcriptionally activated by high levels of cysteine and hif-1. hif-1-dependent activation of cdo-1 occurs downstream of an H2S-sensing pathway that includes rhy-1, cysl-1, and egl-9. cdo-1 transcription is primarily activated in the hypodermis where it is also sufficient to drive sulfur amino acid metabolism. Thus, the regulation of cdo-1 by hif-1 reveals a negative feedback loop that maintains cysteine homeostasis. High levels of cysteine stimulate the production of an H2S signal. H2S then acts through the rhy-1/cysl-1/egl-9 signaling pathway to increase HIF-1-mediated transcription of cdo-1, promoting degradation of cysteine via CDO-1.
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Affiliation(s)
- Kurt Warnhoff
- Pediatrics and Rare Diseases Group, Sanford ResearchSioux FallsUnited States
- Department of Pediatrics, Sanford School of Medicine, University of South DakotaSioux FallsUnited States
| | | | - Jennifer Snoozy
- Pediatrics and Rare Diseases Group, Sanford ResearchSioux FallsUnited States
| | - Peter C Breen
- Department of Molecular Biology, Massachusetts General HospitalBostonUnited States
| | - Gary Ruvkun
- Department of Molecular Biology, Massachusetts General HospitalBostonUnited States
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16
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Dutta D, Show S, Pal A, Anifowoshe AT, Prasad Aj M, Nongthomba U. The association of cysteine to thiomersal attenuates its apoptosis-mediated cytotoxicity in zebrafish. CHEMOSPHERE 2024; 350:141070. [PMID: 38160945 DOI: 10.1016/j.chemosphere.2023.141070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/03/2024]
Abstract
Thiomersal (TM) is an excellent preservative that is used in a wide variety of products, like pharmaceuticals, cosmetics, and vaccines, etc. Its usage has been in decline because of safety concerns. Since vaccine production is on the rise, its use may increase further in low-income and developing countries, as a cost-effective vaccine preservative. Further, Thiomersal is still being used as an essential component in various pharmaceutical preparations. In this light, the present study addresses its mechanism of toxicity in zebrafish and unveils a novel strategy for lessening its negative effects by conjugating cysteine to it, while retaining its antibacterial efficacy. We show that the mitochondrial membrane potential is destabilised by TM, leading to the induction of apoptosis. Interestingly, TM-cysteine conjugate (at a ratio of 1:1) showed no toxicity in zebrafish, whereas TM alone was highly toxic. Importantly, assaying for the bactericidal activity, tested using Escherichia coli (E. coli) and Methicillin-resistant Staphylococcus aureus (MRSA), revealed that the conjugate retains the antibacterial activity, demonstrating that the TM-cysteine conjugate is a safer alternative to TM as a vaccine preservative, and in all the other products that still use TM.
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Affiliation(s)
- Debanjan Dutta
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India.
| | - Sautan Show
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India; Department of Biochemistry, Pooja Bhagavat Memorial Mahajana Postgraduate Center, Mysore-570016, India
| | - Anabadya Pal
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, 741235, India
| | - Abass Toba Anifowoshe
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India
| | - Mahadesh Prasad Aj
- Department of Biochemistry, Pooja Bhagavat Memorial Mahajana Postgraduate Center, Mysore-570016, India
| | - Upendra Nongthomba
- Department of Developmental Biology and Genetics, Indian Institute of Science, Bangalore, 560012, India.
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17
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Hong J, Mukherjee B, Sanjoba C, Yamagishi J, Goto Y. Upregulation of ATP6V0D2 benefits intracellular survival of Leishmania donovani in erythrocytes-engulfing macrophages. Front Cell Infect Microbiol 2024; 14:1332381. [PMID: 38357442 PMCID: PMC10864549 DOI: 10.3389/fcimb.2024.1332381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 01/12/2024] [Indexed: 02/16/2024] Open
Abstract
Visceral leishmaniasis (VL) is the most severe type of leishmaniasis which is caused by infection of Leishmania donovani complex. In the BALB/c mouse model of VL, multinucleated giant cells (MGCs) with heavy parasite infection consist of the largest population of hemophagocytes in the spleen of L. donovani-infected mice, indicating that MGCs provide the parasites a circumstance beneficial for their survival. Although ATP6V0D2 is a demonstrated factor inducing the formation of hemophagocytic MGCs during L. donovani infection, functions of this protein in shaping the infection outcome in macrophages remain unclear. Here we evaluated the influence of upregulated ATP6V0D2 on intracellular survival of the parasites. L. donovani infection-induced hemophagocytosis of normal erythrocytes by macrophages was suppressed by RNAi-based knockdown of Atp6v0d2. The knockdown of Atp6v0d2 did not improve the survival of amastigotes within macrophages when the cells were cultured in the absence of erythrocytes. On the other hand, reduced intracellular survival of amastigotes in macrophages by the knockdown was observed when macrophages were supplemented with antibody-opsonized erythrocytes before infection. There, increase in cytosolic labile iron pool was observed in the L. donovani-infected knocked-down macrophages. It suggests that ATP6V0D2 plays roles not only in upregulation of hemophagocytosis but also in iron trafficking within L. donovani-infected macrophages. Superior access to iron in macrophages may be how the upregulated expression of the molecule brings benefit to Leishmania for their intracellular survival in the presence of erythrocytes.
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Affiliation(s)
- Jing Hong
- Laboratory of Molecular Immunology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Budhaditya Mukherjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Chizu Sanjoba
- Laboratory of Molecular Immunology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Junya Yamagishi
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Yasuyuki Goto
- Laboratory of Molecular Immunology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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18
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Ouyang Y, Jeong MY, Cunningham CN, Berg JA, Toshniwal AG, Hughes CE, Seiler K, Van Vranken JG, Cluntun AA, Lam G, Winter JM, Akdogan E, Dove KK, Nowinski SM, West M, Odorizzi G, Gygi SP, Dunn CD, Winge DR, Rutter J. Phosphate starvation signaling increases mitochondrial membrane potential through respiration-independent mechanisms. eLife 2024; 13:e84282. [PMID: 38251707 PMCID: PMC10846858 DOI: 10.7554/elife.84282] [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: 10/18/2022] [Accepted: 01/19/2024] [Indexed: 01/23/2024] Open
Abstract
Mitochondrial membrane potential directly powers many critical functions of mitochondria, including ATP production, mitochondrial protein import, and metabolite transport. Its loss is a cardinal feature of aging and mitochondrial diseases, and cells closely monitor membrane potential as an indicator of mitochondrial health. Given its central importance, it is logical that cells would modulate mitochondrial membrane potential in response to demand and environmental cues, but there has been little exploration of this question. We report that loss of the Sit4 protein phosphatase in yeast increases mitochondrial membrane potential, both by inducing the electron transport chain and the phosphate starvation response. Indeed, a similarly elevated mitochondrial membrane potential is also elicited simply by phosphate starvation or by abrogation of the Pho85-dependent phosphate sensing pathway. This enhanced membrane potential is primarily driven by an unexpected activity of the ADP/ATP carrier. We also demonstrate that this connection between phosphate limitation and enhancement of mitochondrial membrane potential is observed in primary and immortalized mammalian cells as well as in Drosophila. These data suggest that mitochondrial membrane potential is subject to environmental stimuli and intracellular signaling regulation and raise the possibility for therapeutic enhancement of mitochondrial function even in defective mitochondria.
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Affiliation(s)
- Yeyun Ouyang
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Mi-Young Jeong
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Corey N Cunningham
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Jordan A Berg
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Ashish G Toshniwal
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Casey E Hughes
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Kristina Seiler
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | | | - Ahmad A Cluntun
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Geanette Lam
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Jacob M Winter
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Emel Akdogan
- Department of Molecular Biology and Genetics, Koç UniversityİstanbulTurkey
| | - Katja K Dove
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Sara M Nowinski
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
| | - Matthew West
- Department of Molecular, Cellular, and Developmental Biology, University of Colorado, BoulderBoulderUnited States
| | - Greg Odorizzi
- Department of Molecular, Cellular, and Developmental Biology, University of Colorado, BoulderBoulderUnited States
| | - Steven P Gygi
- Department of Cell Biology, Harvard University School of MedicineBostonUnited States
| | - Cory D Dunn
- Department of Molecular Biology and Genetics, Koç UniversityİstanbulTurkey
- Institute of Biotechnology, University of HelsinkiHelsinkiFinland
| | - Dennis R Winge
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
- Department of Medicine, The University of UtahSalt Lake CityUnited States
| | - Jared Rutter
- Department of Biochemistry, The University of UtahSalt Lake CityUnited States
- Howard Hughes Medical Institute, University of UtahSalt Lake CityUnited States
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19
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Lindahl PA. Iron Homeostatic Regulation in Saccharomyces cerevisiae: Introduction to a Computational Modeling Method. Methods Mol Biol 2024; 2839:3-29. [PMID: 39008245 DOI: 10.1007/978-1-0716-4043-2_1] [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] [Indexed: 07/16/2024]
Abstract
Over the past 30 years, much has been learned regarding iron homeostatic regulation in budding yeast, S. cerevisiae, including the identity of many of the proteins and molecular-level regulatory mechanisms involved. Most advances have involved inferring such mechanisms based on the analysis of iron-dysregulation phenotypes arising in various genetic mutant strains. Still lacking is a cellular- or system-level understanding of iron homeostasis. These experimental advances are summarized in this review, and a method for developing cellular-level regulatory mechanisms in yeast is presented. The method employs the results of Mössbauer spectroscopy of whole cells and organelles, iron quantification of the same, and ordinary differential equation-based mathematical models. Current models are simplistic when compared to the complexity of iron homeostasis in real cells, yet they hold promise as a useful, perhaps even required, complement to the popular genetics-based approach. The fundamental problem in comprehending cellular regulatory mechanisms is that, given the complexities involved, different molecular-level mechanisms can often give rise to virtually indistinguishable cellular phenotypes. Mathematical models cannot eliminate this problem, but they can minimize it.
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Affiliation(s)
- Paul A Lindahl
- Departments of Chemistry and of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA.
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20
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Zhu H, Shen F, Liao T, Qian H, Liu Y. Immunosenescence and macrophages: From basics to therapeutics. Int J Biochem Cell Biol 2023; 165:106479. [PMID: 37866656 DOI: 10.1016/j.biocel.2023.106479] [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: 06/28/2023] [Revised: 10/06/2023] [Accepted: 10/18/2023] [Indexed: 10/24/2023]
Abstract
Ageing decreases the function of the immune system and increases susceptibility to some chronic, infectious, and autoimmune diseases. Senescence cells, which produce senescence-associated secretory phenotypes (SASPs), can activate the innate and adaptive immune responses. Macrophages are among the most abundant innate immune cell types in senescent microenvironments. Senescence-associated macrophages, recruited by SASPs, play a vital role in establishing the essential microenvironments for maintaining tissue homeostasis. However, it's important to note that these senescence-associated macrophages can also influence senescent processes, either by enhancing or impeding the functions of tissue-resident senescent cells. In this discussion, we describe the potential targets of immunosenescence and shed light on the probable mechanisms by which macrophages influence cellular senescence. Furthermore, we analyze their dual function in both clearing senescent cells and modulating age-related diseases. This multifaceted influence operates through processes including heightened inflammation, phagocytosis, efferocytosis, and autophagy. Given the potential off-target effects and immune evasion mechanisms associated with traditional anti-ageing strategies (senolytics and senomorphics), 'resetting' immune system tolerance or targeting senescence-related macrophage functions (i.e., phagocytotic capacity and immunosurveillance) will inform treatment of age-related diseases. Therefore, we review recent advances in the use of macrophage therapeutics to treat ageing and age-associated disorders, and outline the key gaps in this field.
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Affiliation(s)
- Hongkang Zhu
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | | | - Tingting Liao
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China
| | - He Qian
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, China.
| | - Yu Liu
- Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi 214062, China.
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21
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Fear EJ, Torkelsen FH, Zamboni E, Chen K, Scott M, Jeffery G, Baseler H, Kennerley AJ. Use of 31 P magnetisation transfer magnetic resonance spectroscopy to measure ATP changes after 670 nm transcranial photobiomodulation in older adults. Aging Cell 2023; 22:e14005. [PMID: 37803929 PMCID: PMC10652330 DOI: 10.1111/acel.14005] [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: 05/23/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 10/08/2023] Open
Abstract
Mitochondrial function declines with age, and many pathological processes in neurodegenerative diseases stem from this dysfunction when mitochondria fail to produce the necessary energy required. Photobiomodulation (PBM), long-wavelength light therapy, has been shown to rescue mitochondrial function in animal models and improve human health, but clinical uptake is limited due to uncertainty around efficacy and the mechanisms responsible. Using 31 P magnetisation transfer magnetic resonance spectroscopy (MT-MRS) we quantify, for the first time, the effects of 670 nm PBM treatment on healthy ageing human brains. We find a significant increase in the rate of ATP synthase flux in the brain after PBM in a cohort of older adults. Our study provides initial evidence of PBM therapeutic efficacy for improving mitochondrial function and restoring ATP flux with age, but recognises that wider studies are now required to confirm any resultant cognitive benefits.
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Affiliation(s)
- Elizabeth J. Fear
- Hull York Medical SchoolUniversity of YorkYorkUK
- Department of Biomolecular SciencesUniversity of Urbino Carlo BoUrbinoItaly
| | | | - Elisa Zamboni
- Department of PsychologyUniversity of YorkYorkUK
- School of PsychologyUniversity of NottinghamNottinghamUK
| | | | - Martin Scott
- Department of PsychologyUniversity of YorkYorkUK
- Department of PsychologyStanford UniversityStanfordCaliforniaUSA
| | - Glenn Jeffery
- Faculty of Brain SciencesInstitute of Ophthalmology, UCLLondonUK
| | - Heidi Baseler
- Hull York Medical SchoolUniversity of YorkYorkUK
- Department of PsychologyUniversity of YorkYorkUK
| | - Aneurin J. Kennerley
- Department of ChemistryUniversity of YorkYorkUK
- Institute of SportManchester Metropolitan UniversityManchesterUK
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22
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Mouton SN, Boersma AJ, Veenhoff LM. A physicochemical perspective on cellular ageing. Trends Biochem Sci 2023; 48:949-962. [PMID: 37716870 DOI: 10.1016/j.tibs.2023.08.007] [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: 04/21/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 09/18/2023]
Abstract
Cellular ageing described at the molecular level is a multifactorial process that leads to a spectrum of ageing trajectories. There has been recent discussion about whether a decline in physicochemical homeostasis causes aberrant phase transitions, which are a driver of ageing. Indeed, the function of all biological macromolecules, regardless of their participation in biomolecular condensates, depends on parameters such as pH, crowding, and redox state. We expand on the physicochemical homeostasis hypothesis and summarise recent evidence that the intracellular milieu influences molecular processes involved in ageing.
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Affiliation(s)
- Sara N Mouton
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
| | - Arnold J Boersma
- Cellular Protein Chemistry, Bijvoet Centre for Biomolecular Research, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - Liesbeth M Veenhoff
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
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23
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Warnhoff K, Bhattacharya S, Snoozy J, Breen PC, Ruvkun G. Hypoxia-inducible factor induces cysteine dioxygenase and promotes cysteine homeostasis in Caenorhabditis elegans. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.04.538701. [PMID: 37205365 PMCID: PMC10187278 DOI: 10.1101/2023.05.04.538701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Dedicated genetic pathways regulate cysteine homeostasis. For example, high levels of cysteine activate cysteine dioxygenase, a key enzyme in cysteine catabolism in most animal and many fungal species. The mechanism by which cysteine dioxygenase is regulated is largely unknown. In an unbiased genetic screen for mutations that activate cysteine dioxygenase (cdo-1) in the nematode C. elegans, we isolated loss-of-function mutations in rhy-1 and egl-9, which encode proteins that negatively regulate the stability or activity of the oxygen-sensing hypoxia inducible transcription factor (hif-1). EGL-9 and HIF-1 are core members of the conserved eukaryotic hypoxia response. However, we demonstrate that the mechanism of HIF-1-mediated induction of cdo-1 is largely independent of EGL-9 prolyl hydroxylase activity and the von Hippel-Lindau E3 ubiquitin ligase, the classical hypoxia signaling pathway components. We demonstrate that C. elegans cdo-1 is transcriptionally activated by high levels of cysteine and hif-1. hif-1-dependent activation of cdo-1 occurs downstream of an H2S-sensing pathway that includes rhy-1, cysl-1, and egl-9. cdo-1 transcription is primarily activated in the hypodermis where it is also sufficient to drive sulfur amino acid metabolism. Thus, the regulation of cdo-1 by hif-1 reveals a negative feedback loop that maintains cysteine homeostasis. High levels of cysteine stimulate the production of an H2S signal. H2S then acts through the rhy-1/cysl-1/egl-9 signaling pathway to increase HIF-1-mediated transcription of cdo-1, promoting degradation of cysteine via CDO-1.
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Affiliation(s)
- Kurt Warnhoff
- Pediatrics and Rare Diseases Group, Sanford Research, Sioux Falls, SD 57104, USA
- Department of Pediatrics, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD 57105 USA
| | - Sushila Bhattacharya
- Pediatrics and Rare Diseases Group, Sanford Research, Sioux Falls, SD 57104, USA
| | - Jennifer Snoozy
- Pediatrics and Rare Diseases Group, Sanford Research, Sioux Falls, SD 57104, USA
| | - Peter C. Breen
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Gary Ruvkun
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA
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24
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Uoselis L, Nguyen TN, Lazarou M. Mitochondrial degradation: Mitophagy and beyond. Mol Cell 2023; 83:3404-3420. [PMID: 37708893 DOI: 10.1016/j.molcel.2023.08.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 08/10/2023] [Accepted: 08/17/2023] [Indexed: 09/16/2023]
Abstract
Mitochondria are central hubs of cellular metabolism that also play key roles in signaling and disease. It is therefore fundamentally important that mitochondrial quality and activity are tightly regulated. Mitochondrial degradation pathways contribute to quality control of mitochondrial networks and can also regulate the metabolic profile of mitochondria to ensure cellular homeostasis. Here, we cover the many and varied ways in which cells degrade or remove their unwanted mitochondria, ranging from mitophagy to mitochondrial extrusion. The molecular signals driving these varied pathways are discussed, including the cellular and physiological contexts under which the different degradation pathways are engaged.
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Affiliation(s)
- Louise Uoselis
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia; Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia; Aligning Science Across Parkinson's Collaborative Research Network, Chevy Chase, MD 20185, USA
| | - Thanh Ngoc Nguyen
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia; Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia; Aligning Science Across Parkinson's Collaborative Research Network, Chevy Chase, MD 20185, USA.
| | - Michael Lazarou
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia; Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia; Aligning Science Across Parkinson's Collaborative Research Network, Chevy Chase, MD 20185, USA.
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25
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Okreglak V, Ling R, Ingaramo M, Thayer NH, Millett-Sikking A, Gottschling DE. Cell cycle-linked vacuolar pH dynamics regulate amino acid homeostasis and cell growth. Nat Metab 2023; 5:1803-1819. [PMID: 37640943 PMCID: PMC10590757 DOI: 10.1038/s42255-023-00872-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 07/21/2023] [Indexed: 08/31/2023]
Abstract
Amino acid homeostasis is critical for many cellular processes. It is well established that amino acids are compartmentalized using pH gradients generated between organelles and the cytoplasm; however, the dynamics of this partitioning has not been explored. Here we develop a highly sensitive pH reporter and find that the major amino acid storage compartment in Saccharomyces cerevisiae, the lysosome-like vacuole, alkalinizes before cell division and re-acidifies as cells divide. The vacuolar pH dynamics require the uptake of extracellular amino acids and activity of TORC1, the v-ATPase and the cycling of the vacuolar specific lipid phosphatidylinositol 3,5-bisphosphate, which is regulated by the cyclin-dependent kinase Pho85 (CDK5 in mammals). Vacuolar pH regulation enables amino acid sequestration and mobilization from the organelle, which is important for mitochondrial function, ribosome homeostasis and cell size control. Collectively, our data provide a new paradigm for the use of dynamic pH-dependent amino acid compartmentalization during cell growth/division.
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Affiliation(s)
- Voytek Okreglak
- Calico Life Sciences, LLC, South San Francisco, CA, USA.
- Altos Labs, Redwood City, CA, USA.
| | - Rachel Ling
- Calico Life Sciences, LLC, South San Francisco, CA, USA
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26
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Yan Q, Shi S, Ge Y, Wan S, Li M, Li M. UCHL1 alleviates apoptosis in chondrocytes via upregulation of HIF‑1α‑mediated mitophagy. Int J Mol Med 2023; 52:99. [PMID: 37681473 PMCID: PMC10555477 DOI: 10.3892/ijmm.2023.5302] [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] [Accepted: 08/16/2023] [Indexed: 09/09/2023] Open
Abstract
Stem cell‑based tissue engineering has shown significant potential for rapid restoration of injured cartilage tissues. Stem cells frequently undergo apoptosis because of the prevalence of oxidative stress and inflammation in the microenvironment at the sites of injury. Our previous study demonstrated that stabilization of hypoxia‑inducible factor 1α (HIF‑1α) is key to resisting apoptosis in chondrocytes. Recently, it was reported that Ubiquitin C‑terminal hydrolase L1 (UCHL1) can stabilize HIF‑1α by abrogating the ubiquitination process. However, the effect of UCHL1 on apoptosis in chondrocytes remains unclear. Herein, adipose‑derived stem cells were differentiated into chondrocytes. Next, the CRISPR activation (CRISPRa) system, LDN‑57444 (LDM; a specific inhibitor for UCHL1), KC7F2 (a specific inhibitor for HIF‑1α), and 3‑methyladenine (a specific inhibitor for mitophagy) were used to activate or block UCHL1, HIF‑1α, and mitophagy. Mitophagy, apoptosis, and mitochondrial function in chondrocytes were detected using immunofluorescence, TUNEL staining, and flow cytometry. Moreover, the oxygen consumption rate of chondrocytes was measured using the Seahorse XF 96 Extracellular Flux Analyzer. UCHL1 expression was increased in hypoxia, which in turn regulated mitophagy and apoptosis in the chondrocytes. Further studies revealed that UCHL1 mediated hypoxia‑regulated mitophagy in the chondrocytes. The CRISPRa module was utilized to activate UCHL1 effectively for 7 days; endogenous activation of UCHL1 accelerated mitophagy, inhibited apoptosis, and maintained mitochondrial function in the chondrocytes, which was mediated by HIF‑1α. Taken together, UCHL1 could block apoptosis in chondrocytes via upregulation of HIF‑1α-mediated mitophagy and maintain mitochondrial function. These results indicate the potential of UCHL1 activation using the CRISPRa system for the regeneration of cartilage tissue.
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Affiliation(s)
- Qiqian Yan
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510280
- Guangdong Academy of Stomatology, Guangzhou, Guangdong 510180, P.R. China
| | - Shanwei Shi
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510280
- Guangdong Academy of Stomatology, Guangzhou, Guangdong 510180, P.R. China
| | - Yang Ge
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510280
- Guangdong Academy of Stomatology, Guangzhou, Guangdong 510180, P.R. China
| | - Shuangquan Wan
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510280
- Guangdong Academy of Stomatology, Guangzhou, Guangdong 510180, P.R. China
| | - Mingfei Li
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510280
- Guangdong Academy of Stomatology, Guangzhou, Guangdong 510180, P.R. China
| | - Maoquan Li
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510280
- Guangdong Academy of Stomatology, Guangzhou, Guangdong 510180, P.R. China
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27
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Rehou S, de Brito Monteiro L, Auger C, Knuth CM, Abdullahi A, Stanojcic M, Jeschke MG. Propranolol Normalizes Metabolomic Signatures Thereby Improving Outcomes After Burn. Ann Surg 2023; 278:519-529. [PMID: 37389480 DOI: 10.1097/sla.0000000000005973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
OBJECTIVE AND BACKGROUND Propranolol, a nonselective beta-receptor blocker, improves outcomes of severely burned patients. While the clinical and physiological benefits of beta-blockade are well characterized, the underlying metabolic mechanisms are less well defined. We hypothesized that propranolol improves outcomes after burn injury by profoundly modulating metabolic pathways. METHODS In this phase II randomized controlled trial, patients with burns ≥20% of total body surface area were randomly assigned to control or propranolol (dose given to decrease heart rate <100 bpm). Outcomes included clinical markers, inflammatory and lipidomic profiles, untargeted metabolomics, and molecular pathways. RESULTS Fifty-two severely burned patients were enrolled in this trial (propranolol, n=23 and controls, n=29). There were no significant differences in demographics or injury severity between groups. Metabolomic pathway analyses of the adipose tissue showed that propranolol substantially alters several essential metabolic pathways involved in energy and nucleotide metabolism, as well as catecholamine degradation ( P <0.05). Lipidomic analysis revealed that propranolol-treated patients had lower levels of proinflammatory palmitic acid ( P <0.05) and saturated fatty acids ( P <0.05) with an increased ratio of polyunsaturated fatty acids ( P <0.05), thus shifting the lipidomic profile towards an anti-inflammatory phenotype after burn ( P <0.05). These metabolic effects were mediated by decreased activation of hormone-sensitive lipase at serine 660 ( P <0.05) and significantly reduced endoplasmic reticulum stress by decreasing phospho-JNK ( P <0.05). CONCLUSION Propranolol's ability to mitigate pathophysiological changes to essential metabolic pathways results in significantly improved stress responses.
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Affiliation(s)
- Sarah Rehou
- Hamilton Health Sciences, Hamilton, ON, Canada
- School of Medicine, St. George's University, True Blue, Grenada
| | | | - Christopher Auger
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | - Carly M Knuth
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
- Sunnybrook Research Institute, Toronto, ON, Canada
| | - Abdikarim Abdullahi
- Sunnybrook Research Institute, Toronto, ON, Canada
- Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Mile Stanojcic
- Sunnybrook Research Institute, Toronto, ON, Canada
- Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Marc G Jeschke
- Hamilton Health Sciences, Hamilton, ON, Canada
- Department of Surgery, McMaster University, Hamilton, ON, Canada
- Sunnybrook Research Institute, Toronto, ON, Canada
- Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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28
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Walter S, Mertens C, Muckenthaler MU, Ott C. Cardiac iron metabolism during aging - Role of inflammation and proteolysis. Mech Ageing Dev 2023; 215:111869. [PMID: 37678569 DOI: 10.1016/j.mad.2023.111869] [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: 07/26/2023] [Revised: 09/01/2023] [Accepted: 09/03/2023] [Indexed: 09/09/2023]
Abstract
Iron is the most abundant trace element in the human body. Since iron can switch between its 2-valent and 3-valent form it is essential in various physiological processes such as energy production, proliferation or DNA synthesis. Especially high metabolic organs such as the heart rely on iron-associated iron-sulfur and heme proteins. However, due to switches in iron oxidation state, iron overload exhibits high toxicity through formation of reactive oxygen species, underlining the importance of balanced iron levels. Growing evidence demonstrates disturbance of this balance during aging. While age-associated cardiovascular diseases are often related to iron deficiency, in physiological aging cardiac iron accumulates. To understand these changes, we focused on inflammation and proteolysis, two hallmarks of aging, and their role in iron metabolism. Via the IL-6-hepcidin axis, inflammation and iron status are strongly connected often resulting in anemia accompanied by infiltration of macrophages. This tight connection between anemia and inflammation highlights the importance of the macrophage iron metabolism during inflammation. Age-related decrease in proteolytic activity additionally affects iron balance due to impaired degradation of iron metabolism proteins. Therefore, this review accentuates alterations in iron metabolism during aging with regards to inflammation and proteolysis to draw attention to their implications and associations.
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Affiliation(s)
- Sophia Walter
- German Institute of Human Nutrition Potsdam-Rehbruecke, Department of Molecular Toxicology, Nuthetal, Germany; TraceAge-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly, Potsdam-Berlin-Jena, Wuppertal, Germany; DZHK (German Center for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - Christina Mertens
- Center for Translational Biomedical Iron Research, Department of Pediatric Oncology, Immunology, and Hematology, University of Heidelberg, Heidelberg, Germany; DZHK (German Center for Cardiovascular Research), Heidelberg, Mannheim, Germany
| | - Martina U Muckenthaler
- Center for Translational Biomedical Iron Research, Department of Pediatric Oncology, Immunology, and Hematology, University of Heidelberg, Heidelberg, Germany; DZHK (German Center for Cardiovascular Research), Heidelberg, Mannheim, Germany; Molecular Medicine Partnership Unit, Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), Heidelberg, Germany
| | - Christiane Ott
- German Institute of Human Nutrition Potsdam-Rehbruecke, Department of Molecular Toxicology, Nuthetal, Germany; TraceAge-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly, Potsdam-Berlin-Jena, Wuppertal, Germany; DZHK (German Center for Cardiovascular Research), partner site Berlin, Berlin, Germany.
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29
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Paukštytė J, López Cabezas RM, Feng Y, Tong K, Schnyder D, Elomaa E, Gregorova P, Doudin M, Särkkä M, Sarameri J, Lippi A, Vihinen H, Juutila J, Nieminen A, Törönen P, Holm L, Jokitalo E, Krisko A, Huiskonen J, Sarin LP, Hietakangas V, Picotti P, Barral Y, Saarikangas J. Global analysis of aging-related protein structural changes uncovers enzyme-polymerization-based control of longevity. Mol Cell 2023; 83:3360-3376.e11. [PMID: 37699397 DOI: 10.1016/j.molcel.2023.08.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 05/18/2023] [Accepted: 08/11/2023] [Indexed: 09/14/2023]
Abstract
Aging is associated with progressive phenotypic changes. Virtually all cellular phenotypes are produced by proteins, and their structural alterations can lead to age-related diseases. However, we still lack comprehensive knowledge of proteins undergoing structural-functional changes during cellular aging and their contributions to age-related phenotypes. Here, we conducted proteome-wide analysis of early age-related protein structural changes in budding yeast using limited proteolysis-mass spectrometry (LiP-MS). The results, compiled in online ProtAge catalog, unraveled age-related functional changes in regulators of translation, protein folding, and amino acid metabolism. Mechanistically, we found that folded glutamate synthase Glt1 polymerizes into supramolecular self-assemblies during aging, causing breakdown of cellular amino acid homeostasis. Inhibiting Glt1 polymerization by mutating the polymerization interface restored amino acid levels in aged cells, attenuated mitochondrial dysfunction, and led to lifespan extension. Altogether, this comprehensive map of protein structural changes enables identifying mechanisms of age-related phenotypes and offers opportunities for their reversal.
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Affiliation(s)
- Jurgita Paukštytė
- Helsinki Institute of Life Science, HiLIFE, University of Helsinki, 00790 Helsinki, Finland; Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland
| | - Rosa María López Cabezas
- Helsinki Institute of Life Science, HiLIFE, University of Helsinki, 00790 Helsinki, Finland; Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland
| | - Yuehan Feng
- Institute of Biochemistry, ETH Zurich, 8093 Zurich, Switzerland
| | - Kai Tong
- Helsinki Institute of Life Science, HiLIFE, University of Helsinki, 00790 Helsinki, Finland; Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland; School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA; Interdisciplinary Graduate Program in Quantitative Biosciences, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | | | - Ellinoora Elomaa
- Helsinki Institute of Life Science, HiLIFE, University of Helsinki, 00790 Helsinki, Finland; Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland
| | - Pavlina Gregorova
- Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland
| | - Matteo Doudin
- Helsinki Institute of Life Science, HiLIFE, University of Helsinki, 00790 Helsinki, Finland; Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland
| | - Meeri Särkkä
- Helsinki Institute of Life Science, HiLIFE, University of Helsinki, 00790 Helsinki, Finland; Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland
| | - Jesse Sarameri
- Helsinki Institute of Life Science, HiLIFE, University of Helsinki, 00790 Helsinki, Finland; Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland
| | - Alice Lippi
- Department of Experimental Neurodegeneration, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Helena Vihinen
- Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland
| | - Juhana Juutila
- Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland; Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland
| | - Anni Nieminen
- Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland; Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland
| | - Petri Törönen
- Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland; Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland
| | - Liisa Holm
- Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland; Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland
| | - Eija Jokitalo
- Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland
| | - Anita Krisko
- Department of Experimental Neurodegeneration, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Juha Huiskonen
- Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland
| | - L Peter Sarin
- Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland
| | - Ville Hietakangas
- Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland; Institute of Biotechnology, HiLIFE, University of Helsinki, 00790 Helsinki, Finland
| | - Paola Picotti
- Institute of Biochemistry, ETH Zurich, 8093 Zurich, Switzerland; Institute of Molecular Systems Biology, ETH Zurich, 8093 Zurich, Switzerland
| | - Yves Barral
- Institute of Biochemistry, ETH Zurich, 8093 Zurich, Switzerland
| | - Juha Saarikangas
- Helsinki Institute of Life Science, HiLIFE, University of Helsinki, 00790 Helsinki, Finland; Faculty of Biological and Environmental Sciences, University of Helsinki, 00790 Helsinki, Finland.
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Guardado M, Steurer M, Chapin C, Hernandez RD, Ballard PL, Torgerson D. The Urinary Metabolomic Fingerprint in Extremely Preterm Infants on Total Parenteral Nutrition vs. Enteral Feeds. Metabolites 2023; 13:971. [PMID: 37755251 PMCID: PMC10537655 DOI: 10.3390/metabo13090971] [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: 07/28/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 09/28/2023] Open
Abstract
Total Parenteral Nutrition (TPN), which uses intravenous administration of nutrients, minerals and vitamins, is essential for sustaining premature infants until they transition to enteral feeds, but there is limited information on metabolomic differences between infants on TPN and enteral feeds. We performed untargeted global metabolomics on urine samples collected between 23-30 days of life from 314 infants born <29 weeks gestational age from the TOLSURF and PROP cohorts. Principal component analysis across all metabolites showed a separation of infants solely on TPN compared to infants who had transitioned to enteral feeds, indicating global metabolomic differences between infants based on feeding status. Among 913 metabolites that passed quality control filters, 609 varied in abundance between infants on TPN vs. enteral feeds at p < 0.05. Of these, 88% were in the direction of higher abundance in the urine of infants on enteral feeds. In a subset of infants in a longitudinal analysis, both concurrent and delayed changes in metabolite levels were observed with the initiation of enteral feeds. These infants had higher concentrations of essential amino acids, lipids, and vitamins, which are necessary for growth and development, suggesting the nutritional benefit of an enteral feeding regimen.
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Affiliation(s)
- Miguel Guardado
- Biological and Medical Informatics Graduate Program, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94134, USA
- Department of Epidemiology and Biostatistics, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94158, USA;
- Department of Bioengineering and Therapeutic Sciences, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94134, USA;
| | - Martina Steurer
- Department of Pediatrics, School of Medicine, Mission Bay & Parnassus Campuses, University of California, San Francisco, CA 94158, USA; (M.S.); (C.C.); (P.L.B.)
| | - Cheryl Chapin
- Department of Pediatrics, School of Medicine, Mission Bay & Parnassus Campuses, University of California, San Francisco, CA 94158, USA; (M.S.); (C.C.); (P.L.B.)
| | - Ryan D. Hernandez
- Department of Bioengineering and Therapeutic Sciences, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94134, USA;
| | - Philip L. Ballard
- Department of Pediatrics, School of Medicine, Mission Bay & Parnassus Campuses, University of California, San Francisco, CA 94158, USA; (M.S.); (C.C.); (P.L.B.)
| | - Dara Torgerson
- Department of Epidemiology and Biostatistics, School of Medicine, Mission Bay Campus, University of California, San Francisco, CA 94158, USA;
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Peng W, Schröder LF, Song P, Wong YC, Krainc D. Parkin regulates amino acid homeostasis at mitochondria-lysosome (M/L) contact sites in Parkinson's disease. SCIENCE ADVANCES 2023; 9:eadh3347. [PMID: 37467322 PMCID: PMC10355824 DOI: 10.1126/sciadv.adh3347] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 06/15/2023] [Indexed: 07/21/2023]
Abstract
Mutations in the E3 ubiquitin ligase parkin are the most common cause of early-onset Parkinson's disease (PD). Although parkin modulates mitochondrial and endolysosomal homeostasis during cellular stress, whether parkin regulates mitochondrial and lysosomal cross-talk under physiologic conditions remains unresolved. Using transcriptomics, metabolomics and super-resolution microscopy, we identify amino acid metabolism as a disrupted pathway in iPSC-derived dopaminergic neurons from patients with parkin PD. Compared to isogenic controls, parkin mutant neurons exhibit decreased mitochondria-lysosome contacts via destabilization of active Rab7. Subcellular metabolomics in parkin mutant neurons reveals amino acid accumulation in lysosomes and their deficiency in mitochondria. Knockdown of the Rab7 GTPase-activating protein TBC1D15 restores mitochondria-lysosome tethering and ameliorates cellular and subcellular amino acid profiles in parkin mutant neurons. Our data thus uncover a function of parkin in promoting mitochondrial and lysosomal amino acid homeostasis through stabilization of mitochondria-lysosome contacts and suggest that modulation of interorganelle contacts may serve as a potential target for ameliorating amino acid dyshomeostasis in disease.
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Affiliation(s)
| | - Leonie F. Schröder
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA
| | - Pingping Song
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA
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Hao T, Yu J, Wu Z, Jiang J, Gong L, Wang B, Guo H, Zhao H, Lu B, Engelender S, He H, Song Z. Hypoxia-reprogramed megamitochondrion contacts and engulfs lysosome to mediate mitochondrial self-digestion. Nat Commun 2023; 14:4105. [PMID: 37433770 DOI: 10.1038/s41467-023-39811-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/29/2023] [Indexed: 07/13/2023] Open
Abstract
Mitochondria are the key organelles for sensing oxygen, which is consumed by oxidative phosphorylation to generate ATP. Lysosomes contain hydrolytic enzymes that degrade misfolded proteins and damaged organelles to maintain cellular homeostasis. Mitochondria physically and functionally interact with lysosomes to regulate cellular metabolism. However, the mode and biological functions of mitochondria-lysosome communication remain largely unknown. Here, we show that hypoxia remodels normal tubular mitochondria into megamitochondria by inducing broad inter-mitochondria contacts and subsequent fusion. Importantly, under hypoxia, mitochondria-lysosome contacts are promoted, and certain lysosomes are engulfed by megamitochondria, in a process we term megamitochondria engulfing lysosome (MMEL). Both megamitochondria and mature lysosomes are required for MMEL. Moreover, the STX17-SNAP29-VAMP7 complex contributes to mitochondria-lysosome contacts and MMEL under hypoxia. Intriguingly, MMEL mediates a mode of mitochondrial degradation, which we termed mitochondrial self-digestion (MSD). Moreover, MSD increases mitochondrial ROS production. Our results reveal a mode of crosstalk between mitochondria and lysosomes and uncover an additional pathway for mitochondrial degradation.
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Affiliation(s)
- Tianshu Hao
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Jianglong Yu
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Zhida Wu
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Jie Jiang
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Longlong Gong
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Bingjun Wang
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Hanze Guo
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Huabin Zhao
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China
| | - Bin Lu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Simone Engelender
- Department of Biochemistry, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - He He
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China.
| | - Zhiyin Song
- College of Life Sciences, Taikang center for life and medical sciences, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, Hubei, China.
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Strenkert D, Schmollinger S, Hu Y, Hofmann C, Holbrook K, Liu HW, Purvine SO, Nicora CD, Chen S, Lipton MS, Northen TR, Clemens S, Merchant SS. Zn deficiency disrupts Cu and S homeostasis in Chlamydomonas resulting in over accumulation of Cu and Cysteine. Metallomics 2023; 15:mfad043. [PMID: 37422438 PMCID: PMC10357957 DOI: 10.1093/mtomcs/mfad043] [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: 04/12/2023] [Accepted: 07/06/2023] [Indexed: 07/10/2023]
Abstract
Growth of Chlamydomonas reinhardtii in zinc (Zn) limited medium leads to disruption of copper (Cu) homeostasis, resulting in up to 40-fold Cu over-accumulation relative to its typical Cu quota. We show that Chlamydomonas controls its Cu quota by balancing Cu import and export, which is disrupted in a Zn deficient cell, thus establishing a mechanistic connection between Cu and Zn homeostasis. Transcriptomics, proteomics and elemental profiling revealed that Zn-limited Chlamydomonas cells up-regulate a subset of genes encoding "first responder" proteins involved in sulfur (S) assimilation and consequently accumulate more intracellular S, which is incorporated into L-cysteine, γ-glutamylcysteine, and homocysteine. Most prominently, in the absence of Zn, free L-cysteine is increased ∼80-fold, corresponding to ∼2.8 × 109 molecules/cell. Interestingly, classic S-containing metal binding ligands like glutathione and phytochelatins do not increase. X-ray fluorescence microscopy showed foci of S accumulation in Zn-limited cells that co-localize with Cu, phosphorus and calcium, consistent with Cu-thiol complexes in the acidocalcisome, the site of Cu(I) accumulation. Notably, cells that have been previously starved for Cu do not accumulate S or Cys, causally connecting cysteine synthesis with Cu accumulation. We suggest that cysteine is an in vivo Cu(I) ligand, perhaps ancestral, that buffers cytosolic Cu.
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Affiliation(s)
- Daniela Strenkert
- California Institute for Quantitative Biosciences, University of California, Berkeley, CA, 94720, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
| | - Stefan Schmollinger
- California Institute for Quantitative Biosciences, University of California, Berkeley, CA, 94720, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
| | - Yuntao Hu
- Environmental Genomics and Systems Biology, Lawrence Berkeley National LaboratoryBerkeley CAUSA
| | | | - Kristen Holbrook
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
| | - Helen W Liu
- California Institute for Quantitative Biosciences, University of California, Berkeley, CA, 94720, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
| | - Samuel O Purvine
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, US Department of Energy, Richland, WA 99352, USA
| | - Carrie D Nicora
- Biological Sciences Division, Pacific Northwest National Laboratory, US Department of Energy, Richland, WA 99352, USA
| | - Si Chen
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Mary S Lipton
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, US Department of Energy, Richland, WA 99352, USA
| | - Trent R Northen
- Environmental Genomics and Systems Biology, Lawrence Berkeley National LaboratoryBerkeley CAUSA
- Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley CAUSA
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, Germany
| | - Sabeeha S Merchant
- California Institute for Quantitative Biosciences, University of California, Berkeley, CA, 94720, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
- Environmental Genomics and Systems Biology, Lawrence Berkeley National LaboratoryBerkeley CAUSA
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
- Department of Molecular & Cell Biology, University of California, Berkeley, CA, 94720, USA
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Hao S, Huang M, Xu X, Wang X, Song Y, Jiang W, Huo L, Gu J. Identification and validation of a novel mitochondrion-related gene signature for diagnosis and immune infiltration in sepsis. Front Immunol 2023; 14:1196306. [PMID: 37398680 PMCID: PMC10310918 DOI: 10.3389/fimmu.2023.1196306] [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] [Received: 03/29/2023] [Accepted: 06/05/2023] [Indexed: 07/04/2023] Open
Abstract
Background Owing to the complex pathophysiological features and heterogeneity of sepsis, current diagnostic methods are not sufficiently precise or timely, causing a delay in treatment. It has been suggested that mitochondrial dysfunction plays a critical role in sepsis. However, the role and mechanism of mitochondria-related genes in the diagnostic and immune microenvironment of sepsis have not been sufficiently investigated. Methods Mitochondria-related differentially expressed genes (DEGs) were identified between human sepsis and normal samples from GSE65682 dataset. Least absolute shrinkage and selection operator (LASSO) regression and the Support Vector Machine (SVM) analyses were carried out to locate potential diagnostic biomarkers. Gene ontology and gene set enrichment analyses were conducted to identify the key signaling pathways associated with these biomarker genes. Furthermore, correlation of these genes with the proportion of infiltrating immune cells was estimated using CIBERSORT. The expression and diagnostic value of the diagnostic genes were evaluated using GSE9960 and GSE134347 datasets and septic patients. Furthermore, we established an in vitro sepsis model using lipopolysaccharide (1 µg/mL)-stimulated CP-M191 cells. Mitochondrial morphology and function were evaluated in PBMCs from septic patients and CP-M191 cells, respectively. Results In this study, 647 mitochondrion-related DEGs were obtained. Machine learning confirmed six critical mitochondrion-related DEGs, including PID1, CS, CYP1B1, FLVCR1, IFIT2, and MAPK14. We then developed a diagnostic model using the six genes, and receiver operating characteristic (ROC) curves indicated that the novel diagnostic model based on the above six critical genes screened sepsis samples from normal samples with area under the curve (AUC) = 1.000, which was further demonstrated in the GSE9960 and GSE134347 datasets and our cohort. Importantly, we also found that the expression of these genes was associated with different kinds of immune cells. In addition, mitochondrial dysfunction was mainly manifested by the promotion of mitochondrial fragmentation (p<0.05), impaired mitochondrial respiration (p<0.05), decreased mitochondrial membrane potential (p<0.05), and increased reactive oxygen species (ROS) generation (p<0.05) in human sepsis and LPS-simulated in vitro sepsis models. Conclusion We constructed a novel diagnostic model containing six MRGs, which has the potential to be an innovative tool for the early diagnosis of sepsis.
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Affiliation(s)
- Shuai Hao
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Miao Huang
- Nursing School, Chongqing Medical University, Chongqing, China
| | - Xiaofan Xu
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Xulin Wang
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yuqing Song
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Wendi Jiang
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Liqun Huo
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jun Gu
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
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Cheng G, Hardy M, Kalyanaraman B. Antiproliferative effects of mitochondria-targeted N-acetylcysteine and analogs in cancer cells. Sci Rep 2023; 13:7254. [PMID: 37142668 PMCID: PMC10160116 DOI: 10.1038/s41598-023-34266-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 03/23/2023] [Indexed: 05/06/2023] Open
Abstract
N-acetylcysteine (NAC) has been used as an antioxidant drug in tumor cells and preclinical mice tumor xenografts, and it improves adaptive immunotherapy in melanoma. NAC is not readily bioavailable and is used in high concentrations. The effects of NAC have been attributed to its antioxidant and redox signaling role in mitochondria. New thiol-containing molecules targeted to mitochondria are needed. Here, mitochondria-targeted NAC with a 10-carbon alkyl side chain attached to a triphenylphosphonium group (Mito10-NAC) that is functionally similar to NAC was synthesized and studied. Mito10-NAC has a free sulfhydryl group and is more hydrophobic than NAC. Mito10-NAC is nearly 2000-fold more effective than NAC in inhibiting several cancer cells, including pancreatic cancer cells. Methylation of NAC and Mito10-NAC also inhibited cancer cell proliferation. Mito10-NAC inhibits mitochondrial complex I-induced respiration and, in combination with monocarboxylate transporter 1 inhibitor, synergistically decreased pancreatic cancer cell proliferation. Results suggest that the antiproliferative effects of NAC and Mito10-NAC are unlikely to be related to their antioxidant mechanism (i.e., scavenging of reactive oxygen species) or to the sulfhydryl group-dependent redox modulatory effects.
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Affiliation(s)
- Gang Cheng
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA
| | - Micael Hardy
- CNRS, ICR, UMR 7273, Aix Marseille Univ, 13013, Marseille, France
| | - Balaraman Kalyanaraman
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
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36
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Fang W, Jiang L, Zhu Y, Yang S, Qiu H, Cheng J, Liang Q, Tu ZC, Ye C. Methionine restriction constrains lipoylation and activates mitochondria for nitrogenic synthesis of amino acids. Nat Commun 2023; 14:2504. [PMID: 37130856 PMCID: PMC10154411 DOI: 10.1038/s41467-023-38289-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 04/21/2023] [Indexed: 05/04/2023] Open
Abstract
Methionine restriction (MR) provides metabolic benefits in many organisms. However, mechanisms underlying the MR-induced effect remain incompletely understood. Here, we show in the budding yeast S. cerevisiae that MR relays a signal of S-adenosylmethionine (SAM) deprivation to adapt bioenergetic mitochondria to nitrogenic anabolism. In particular, decreases in cellular SAM constrain lipoate metabolism and protein lipoylation required for the operation of the tricarboxylic acid (TCA) cycle in the mitochondria, leading to incomplete glucose oxidation with an exit of acetyl-CoA and α-ketoglutarate from the TCA cycle to the syntheses of amino acids, such as arginine and leucine. This mitochondrial response achieves a trade-off between energy metabolism and nitrogenic anabolism, which serves as an effector mechanism promoting cell survival under MR.
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Affiliation(s)
- Wen Fang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Liu Jiang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Yibing Zhu
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Sen Yang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Hong Qiu
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Jiou Cheng
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Qingxi Liang
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
- National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang, 330022, China
| | - Zong-Cai Tu
- National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang, 330022, China
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Cunqi Ye
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China.
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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Wei X, Liu M, Zheng Z, Yu S, Huang L, Ma J, Gao Y, Peng Y, Chen L, Tan R, She Z, Yang L. Defective NCOA4-dependent ferroptosis in senescent fibroblasts retards diabetic wound healing. Cell Death Discov 2023; 9:138. [PMID: 37117222 PMCID: PMC10147701 DOI: 10.1038/s41420-023-01437-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 04/02/2023] [Accepted: 04/18/2023] [Indexed: 04/30/2023] Open
Abstract
Cellular senescence describes a state of permanent proliferative arrest in cells. Studies have demonstrated that diabetes promotes the pathological accumulation of senescent cells, which in turn impairs cell movement and proliferation. Historically, senescence has been perceived to be a detrimental consequence of chronic wound healing. However, the underlying mechanism that causes senescent cells to remain in diabetic wounds is yet to be elucidated. Ferroptosis and ferritinophagy observed in diabetes are due to iron metabolism disorders, which are directly associated with the initiation and progression of diabetes. Herein, we reveal that senescent fibroblasts in diabetic wounds are resistant to ferroptosis and that impaired ferritinophagy may be a contributing cause. Further, the expression of NCOA4, a key factor that influences ferritinophagy, is decreased in both diabetic wound tissue and high glucose-induced senescent fibroblasts. Moreover, NCOA4 overexpression could render senescent fibroblasts more vulnerable to ferroptosis. A faster wound healing process was also linked to the induction of ferroptosis. Thus, resistance to ferroptosis impedes the removal of senescent fibroblasts; promoting ferritinophagy could reverse this process, which may have significant implications for the management of diabetic wounds.
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Affiliation(s)
- Xuerong Wei
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Mengqian Liu
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zijun Zheng
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shengxiang Yu
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lei Huang
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jun Ma
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yanbin Gao
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yujie Peng
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lianglong Chen
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Rongwei Tan
- Shenzhen Lando Biomaterials Co., Ltd., Shenzhen Engineering Research Center of Implantable Medical Polymer, Guangdong Engineering Research Center of Implantable Medical Polymer, Shenzhen, China
| | - Zhending She
- Shenzhen Lando Biomaterials Co., Ltd., Shenzhen Engineering Research Center of Implantable Medical Polymer, Guangdong Engineering Research Center of Implantable Medical Polymer, Shenzhen, China
| | - Lei Yang
- Department of Burns, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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Li B, Bai Y, Yion C, Wang H, Su X, Feng G, Guo M, Peng W, Shen B, Zheng B. Single-Atom Nanocatalytic Therapy for Suppression of Neuroinflammation by Inducing Autophagy of Abnormal Mitochondria. ACS NANO 2023; 17:7511-7529. [PMID: 37018124 DOI: 10.1021/acsnano.2c12614] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Catalysts have achieved efficacy in scavenging reactive oxygen species (ROS) to eliminate neuroinflammation, but it ignores the essential fact of blocking the source of ROS regeneration. Here, we report the single-atom catalysts (SACs) Pt/CeO2, which can effectively catalyze the breakdown of existing ROS and induce mitochondrial membrane potential (Δψm) depolarization by interfering with the α-glycerophosphate shuttle pathway and malate-aspartate shuttle pathway, indirectly triggering the self-clearance of dysfunctional mitochondria and thus eradicating the source of ROS generation. In a therapeutic model of Parkinson's disease (PD), Pt/CeO2 wrapped by neutrophil-like (HL-60) cell membranes and modified by rabies virus glycoprotein (RVG29) effectively crosses the blood-brain barrier (BBB), enters dopaminergic neurons entering the neuroinflammatory region breaking down existing ROS and inducing mitophagy by electrostatic adsorption targeting mitochondria to prevent ROS regeneration after catalyst discharge. This strategy of efficiently eliminating ROS at the lesion and fundamentally blocking the source of ROS production can address both symptoms and root causes and provides a mechanism of explanation and action target for the treatment of inflammation-related diseases.
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Affiliation(s)
- Bowen Li
- Academy of Medical Engineering and Translational Medicine, Tianjin Key Laboratory of Brain Science and Neural Engineering, Xincheng Hospital of Tianjin University, Tianjin University, Tianjin 300072, China
| | - Yang Bai
- Department of Stomatology, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, China
| | - Chan Yion
- Academy of Medical Engineering and Translational Medicine, Tianjin Key Laboratory of Brain Science and Neural Engineering, Xincheng Hospital of Tianjin University, Tianjin University, Tianjin 300072, China
| | - Hua Wang
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China
| | - Xin Su
- School of Life Sciences, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China
| | - Guoqing Feng
- Academy of Medical Engineering and Translational Medicine, Tianjin Key Laboratory of Brain Science and Neural Engineering, Xincheng Hospital of Tianjin University, Tianjin University, Tianjin 300072, China
| | - Mingming Guo
- Academy of Medical Engineering and Translational Medicine, Tianjin Key Laboratory of Brain Science and Neural Engineering, Xincheng Hospital of Tianjin University, Tianjin University, Tianjin 300072, China
| | - Wenchang Peng
- Academy of Medical Engineering and Translational Medicine, Tianjin Key Laboratory of Brain Science and Neural Engineering, Xincheng Hospital of Tianjin University, Tianjin University, Tianjin 300072, China
| | - Boxi Shen
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China
| | - Bin Zheng
- Academy of Medical Engineering and Translational Medicine, Tianjin Key Laboratory of Brain Science and Neural Engineering, Xincheng Hospital of Tianjin University, Tianjin University, Tianjin 300072, China
- Healthina Academy of Cellular Intelligence Manufacturing & Neurotrauma Repair of Tianjin Economic-Technological Development Area, Healthina Biomedicine (Tianjin) Co. Ltd., No. 286 AnShan West Road, NanKai District, Tianjin 300190, China
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Liu FC, Cheng ML, Lo CJ, Hsu WC, Lin G, Lin HT. Exploring the aging process of cognitively healthy adults by analyzing cerebrospinal fluid metabolomics using liquid chromatography-tandem mass spectrometry. BMC Geriatr 2023; 23:217. [PMID: 37020298 PMCID: PMC10077689 DOI: 10.1186/s12877-023-03939-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 03/29/2023] [Indexed: 04/07/2023] Open
Abstract
BACKGROUND During biological aging, significant metabolic dysregulation in the central nervous system may lead to cognitive decline and neurodegeneration. However, the metabolomics of the aging process in cerebrospinal fluid (CSF) has not been thoroughly explored. METHODS In this cohort study of CSF metabolomics using liquid chromatography-mass spectrometry (LC-MS), fasting CSF samples collected from 92 cognitively unimpaired adults aged 20-87 years without obesity or diabetes were analyzed. RESULTS We identified 37 metabolites in these CSF samples with significant positive correlations with aging, including cysteine, pantothenic acid, 5-hydroxyindoleacetic acid (5-HIAA), aspartic acid, and glutamate; and two metabolites with negative correlations, asparagine and glycerophosphocholine. The combined alterations of asparagine, cysteine, glycerophosphocholine, pantothenic acid, sucrose, and 5-HIAA showed a superior correlation with aging (AUC = 0.982). These age-correlated changes in CSF metabolites might reflect blood-brain barrier breakdown, neuroinflammation, and mitochondrial dysfunction in the aging brain. We also found sex differences in CSF metabolites with higher levels of taurine and 5-HIAA in women using propensity-matched comparison. CONCLUSIONS Our LC-MS metabolomics of the aging process in a Taiwanese population revealed several significantly altered CSF metabolites during aging and between the sexes. These metabolic alterations in CSF might provide clues for healthy brain aging and deserve further exploration.
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Affiliation(s)
- Fu-Chao Liu
- Department of Anesthesiology, Chang Gung Memorial Hospital, 5 Fu-Shin Street, Kwei-Shan, Taoyuan, 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, 333, Taiwan
- Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chi-Jen Lo
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, 333, Taiwan
| | - Wen-Chuin Hsu
- College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
- Department of Neurology, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan
| | - Gigin Lin
- Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Department of Medical Imaging and Intervention, Imaging Core Lab, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan
| | - Huan-Tang Lin
- Department of Anesthesiology, Chang Gung Memorial Hospital, 5 Fu-Shin Street, Kwei-Shan, Taoyuan, 333, Taiwan.
- College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan.
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan.
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40
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Strenkert D, Schmollinger S, Hu Y, Hofmann C, Holbrook K, Liu HW, Purvine SO, Nicora CD, Chen S, Lipton MS, Northen TR, Clemens S, Merchant SS. Cysteine: an ancestral Cu binding ligand in green algae? BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.15.532757. [PMID: 36993560 PMCID: PMC10055113 DOI: 10.1101/2023.03.15.532757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Growth of Chlamydomonas reinhardtii in zinc (Zn) limited medium leads to disruption of copper (Cu) homeostasis, resulting in up to 40-fold Cu over-accumulation relative to its typical Cu quota. We show that Chlamydomonas controls its Cu quota by balancing Cu import and export, which is disrupted in a Zn deficient cell, thus establishing a mechanistic connection between Cu and Zn homeostasis. Transcriptomics, proteomics and elemental profiling revealed that Zn-limited Chlamydomonas cells up-regulate a subset of genes encoding "first responder" proteins involved in sulfur (S) assimilation and consequently accumulate more intracellular S, which is incorporated into L-cysteine, γ-glutamylcysteine and homocysteine. Most prominently, in the absence of Zn, free L-cysteine is increased ~80-fold, corresponding to ~ 2.8 × 10 9 molecules/cell. Interestingly, classic S-containing metal binding ligands like glutathione and phytochelatins do not increase. X-ray fluorescence microscopy showed foci of S accumulation in Zn-limited cells that co-localize with Cu, phosphorus and calcium, consistent with Cu-thiol complexes in the acidocalcisome, the site of Cu(I) accumulation. Notably, cells that have been previously starved for Cu do not accumulate S or Cys, causally connecting cysteine synthesis with Cu accumulation. We suggest that cysteine is an in vivo Cu(I) ligand, perhaps ancestral, that buffers cytosolic Cu.
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41
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Wang K, Yao K, Chen XY, Wen DK, Qin YJ, Hu ZG, Yang YS. Discovery of the cysteine dynamics during the development and treatment of diabetic process by fluorescent imaging. Redox Biol 2023; 62:102660. [PMID: 36906953 PMCID: PMC10023934 DOI: 10.1016/j.redox.2023.102660] [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: 02/08/2023] [Revised: 03/05/2023] [Accepted: 03/06/2023] [Indexed: 03/09/2023] Open
Abstract
Herein, a novel fluorescent probe RhoDCM was developed for monitoring the cysteine (Cys) dynamics. For the first time, the Cys-triggered implement was applied in relatively complete diabetic mice models. The response of RhoDCM towards Cys suggested advantages including practical sensitivity, high selectivity, rapid reaction, and steadiness in various pH and temperature conditions. RhoDCM could basically monitor the intracellular Cys level, both exogenous and endogenous. It could further monitor the glucose level via detecting consumed Cys. Furthermore, the diabetic mice models including the no diabetic control group, the induced model groups by streptozocin (STZ) or alloxan, and the treatment groups induced by STZ and treated with vildagliptin (Vil), dapagliflozin (DA), or metformin (Metf) were constructed. The models were checked by oral glucose tolerance test and significant liver-related serum indexes. Based on the models, the in vivo imaging and penetrating depth fluorescence imaging both indicated that RhoDCM could characterize the status of the development and treatment in the diabetic process via monitoring the Cys dynamics. Consequently, RhoDCM seemed beneficial for inferring the order of severity in the diabetic process and evaluating the potency of therapeutic schedules, which might be informatic for correlated investigations.
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Affiliation(s)
- Kai Wang
- Department of Medical Laboratory, Affiliated Children's Hospital of Jiangnan University, Wuxi, Jiangsu, China; State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Kun Yao
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China; Laboratory of Medicinal Chemical Biology, Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Xu-Yang Chen
- Department of Medical Laboratory, Affiliated Children's Hospital of Jiangnan University, Wuxi, Jiangsu, China; State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Da-Ke Wen
- Department of Medical Laboratory, Affiliated Children's Hospital of Jiangnan University, Wuxi, Jiangsu, China
| | - Ya-Juan Qin
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Zhi-Gang Hu
- Department of Medical Laboratory, Affiliated Children's Hospital of Jiangnan University, Wuxi, Jiangsu, China.
| | - Yu-Shun Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210023, China; Jinhua Advanced Research Institute, Jinhua, 321019, China.
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42
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Ahmadzadeh K, Pereira M, Vanoppen M, Bernaerts E, Ko J, Mitera T, Maksoudian C, Manshian BB, Soenen S, Rose CD, Matthys P, Wouters C, Behmoaras J. Multinucleation resets human macrophages for specialized functions at the expense of their identity. EMBO Rep 2023; 24:e56310. [PMID: 36597777 PMCID: PMC9986822 DOI: 10.15252/embr.202256310] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 01/05/2023] Open
Abstract
Macrophages undergo plasma membrane fusion and cell multinucleation to form multinucleated giant cells (MGCs) such as osteoclasts in bone, Langhans giant cells (LGCs) as part of granulomas or foreign-body giant cells (FBGCs) in reaction to exogenous material. How multinucleation per se contributes to functional specialization of mature mononuclear macrophages remains poorly understood in humans. Here, we integrate comparative transcriptomics with functional assays in purified mature mononuclear and multinucleated human osteoclasts, LGCs and FBGCs. Strikingly, in all three types of MGCs, multinucleation causes a pronounced downregulation of macrophage identity. We show enhanced lysosome-mediated intracellular iron homeostasis promoting MGC formation. The transition from mononuclear to multinuclear state is accompanied by cell specialization specific to each polykaryon. Enhanced phagocytic and mitochondrial function associate with FBGCs and osteoclasts, respectively. Moreover, human LGCs preferentially express B7-H3 (CD276) and can form granuloma-like clusters in vitro, suggesting that their multinucleation potentiates T cell activation. These findings demonstrate how cell-cell fusion and multinucleation reset human macrophage identity as part of an advanced maturation step that confers MGC-specific functionality.
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Affiliation(s)
- Kourosh Ahmadzadeh
- Laboratory of Immunobiology, Department Microbiology, Immunology and Transplantation, Rega InstituteKU Leuven—University of LeuvenLeuvenBelgium
| | - Marie Pereira
- Centre for Inflammatory Disease, Department of Immunology and Inflammation, Hammersmith HospitalImperial College LondonLondonUK
| | - Margot Vanoppen
- Laboratory of Immunobiology, Department Microbiology, Immunology and Transplantation, Rega InstituteKU Leuven—University of LeuvenLeuvenBelgium
| | - Eline Bernaerts
- Laboratory of Immunobiology, Department Microbiology, Immunology and Transplantation, Rega InstituteKU Leuven—University of LeuvenLeuvenBelgium
| | - Jeong‐Hun Ko
- Centre for Inflammatory Disease, Department of Immunology and Inflammation, Hammersmith HospitalImperial College LondonLondonUK
| | - Tania Mitera
- Laboratory of Immunobiology, Department Microbiology, Immunology and Transplantation, Rega InstituteKU Leuven—University of LeuvenLeuvenBelgium
| | - Christy Maksoudian
- NanoHealth and Optical Imaging Group, Translational Cell and Tissue Research Unit, Department of Imaging and PathologyKU LeuvenLeuvenBelgium
| | - Bella B Manshian
- Translational Cell and Tissue Research Unit, Department of Imaging and PathologyKU LeuvenLeuvenBelgium
| | - Stefaan Soenen
- NanoHealth and Optical Imaging Group, Translational Cell and Tissue Research Unit, Department of Imaging and PathologyKU LeuvenLeuvenBelgium
| | - Carlos D Rose
- Division of Pediatric Rheumatology Nemours Children's HospitalThomas Jefferson UniversityPhiladelphiaPAUSA
| | - Patrick Matthys
- Laboratory of Immunobiology, Department Microbiology, Immunology and Transplantation, Rega InstituteKU Leuven—University of LeuvenLeuvenBelgium
| | - Carine Wouters
- Laboratory of Immunobiology, Department Microbiology, Immunology and Transplantation, Rega InstituteKU Leuven—University of LeuvenLeuvenBelgium
- Division Pediatric RheumatologyUZ LeuvenLeuvenBelgium
- European Reference Network for Rare ImmunodeficiencyAutoinflammatory and Autoimmune Diseases (RITA) at University Hospital LeuvenLeuvenBelgium
| | - Jacques Behmoaras
- Centre for Inflammatory Disease, Department of Immunology and Inflammation, Hammersmith HospitalImperial College LondonLondonUK
- Programme in Cardiovascular and Metabolic Disorders and Centre for Computational BiologyDuke‐NUS Medical School SingaporeSingaporeSingapore
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43
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Rehfeld F, Eitson JL, Ohlson MB, Chang TC, Schoggins JW, Mendell JT. CRISPR screening reveals a dependency on ribosome recycling for efficient SARS-CoV-2 programmed ribosomal frameshifting and viral replication. Cell Rep 2023; 42:112076. [PMID: 36753415 PMCID: PMC9884621 DOI: 10.1016/j.celrep.2023.112076] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 11/21/2022] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
During translation of the genomic RNA of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative virus in the COVID-19 pandemic, host ribosomes undergo programmed ribosomal frameshifting (PRF) at a conserved structural element. Although PRF is essential for coronavirus replication, host factors that regulate this process have not yet been identified. Here we perform genome-wide CRISPR-Cas9 knockout screens to identify regulators of SARS-CoV-2 PRF. These screens reveal that loss of ribosome recycling factors markedly decreases frameshifting efficiency and impairs SARS-CoV-2 viral replication. Mutational studies support a model wherein efficient removal of ribosomal subunits at the ORF1a stop codon is required for frameshifting of trailing ribosomes. This dependency upon ribosome recycling is not observed with other non-pathogenic human betacoronaviruses and is likely due to the unique position of the ORF1a stop codon in the SARS clade of coronaviruses. These findings therefore uncover host factors that support efficient SARS-CoV-2 translation and replication.
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Affiliation(s)
- Frederick Rehfeld
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jennifer L Eitson
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Maikke B Ohlson
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Tsung-Cheng Chang
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - John W Schoggins
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Joshua T Mendell
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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44
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Berry BJ, Vodičková A, Müller-Eigner A, Meng C, Ludwig C, Kaeberlein M, Peleg S, Wojtovich AP. Optogenetic rejuvenation of mitochondrial membrane potential extends C. elegans lifespan. NATURE AGING 2023; 3:157-161. [PMID: 36873708 PMCID: PMC9980297 DOI: 10.1038/s43587-022-00340-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mitochondrial dysfunction plays a central role in aging but the exact biological causes are still being determined. Here, we show that optogenetically increasing mitochondrial membrane potential during adulthood using a light-activated proton pump improves age-associated phenotypes and extends lifespan in C. elegans. Our findings provide direct causal evidence that rescuing the age-related decline in mitochondrial membrane potential is sufficient to slow the rate of aging and extend healthspan and lifespan.
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Affiliation(s)
- Brandon J Berry
- University of Washington, Department of Laboratory Medicine & Pathology, Seattle WA, 98195, United States of America
| | - Anežka Vodičková
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester NY, 14642 Box 711/604. United States of America
| | - Annika Müller-Eigner
- Research Group Epigenetics, Metabolism and Longevity, Research Institute for Farm Animal Biology (FBN), Dummerstorf, 18147, Germany
| | - Chen Meng
- Bavarian Center for Biomolecular Mass Spectrometry (BayBioMS), Technical University of Munich, 85354, Freising, Germany
| | - Christina Ludwig
- Bavarian Center for Biomolecular Mass Spectrometry (BayBioMS), Technical University of Munich, 85354, Freising, Germany
| | - Matt Kaeberlein
- University of Washington, Department of Laboratory Medicine & Pathology, Seattle WA, 98195, United States of America
| | - Shahaf Peleg
- Research Group Epigenetics, Metabolism and Longevity, Research Institute for Farm Animal Biology (FBN), Dummerstorf, 18147, Germany
| | - Andrew P Wojtovich
- University of Rochester Medical Center, Department of Anesthesiology and Perioperative Medicine, 575 Elmwood Ave., Rochester NY, 14642 Box 711/604. United States of America
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45
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Ditta SA, Yaqub A, Tanvir F, Rashid M, Ullah R, Zubair M, Ali S, Anjum KM. Gold nanoparticles capped with L-glycine, L-cystine, and L-tyrosine: toxicity profiling and antioxidant potential. JOURNAL OF MATERIALS SCIENCE 2023; 58:2814-2837. [PMID: 36743265 PMCID: PMC9888356 DOI: 10.1007/s10853-023-08209-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Biomolecules-based surface modifications of nanomaterials may yield effective and biocompatible nanoconjugates. This study was designed to evaluate gold nanoconjugates (AuNCs) for their altered antioxidant potential. Gold nanoparticles (AuNPs) and their conjugates gave SPR peaks in the ranges of 512-525 nm, with red or blueshift for different conjugates. Cys-AuNCs demonstrated enhanced (p < 0.05) and Gly-AuNCs (p > 0.05) displayed reduced DPPH activity. Gly-AuNCs and Tyr-AuNCs displayed enhanced ferric-reducing power and hydrogen peroxide scavenging activity, respectively. Cadmium-intoxicated mice were exposed to gold nanomaterials, and the level of various endogenous parameters, i.e., CAT, GST, SOD, GSH, and MTs, was evaluated. GSH and MTs in liver tissues of the cadmium-exposed group (G2) were elevated (p < 0.05), while other groups showed nonsignificance deviations than the control group. It is concluded that these nanoconjugates might provide effective nanomaterials for biomedical applications. However, more detailed studies for their safety profiling are needed before their practical applications.
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Affiliation(s)
- Sarwar Allah Ditta
- Department of Zoology, Government College University, Lahore, 54000 Pakistan
| | - Atif Yaqub
- Department of Zoology, Government College University, Lahore, 54000 Pakistan
| | - Fouzia Tanvir
- Department of Zoology, University of Okara, Okara, 56300 Pakistan
| | - Muhammad Rashid
- Department of Zoology, Government College University, Lahore, 54000 Pakistan
| | - Rehan Ullah
- Department of Zoology, Government College University, Lahore, 54000 Pakistan
| | - Muhammad Zubair
- Department of Wildlife and Ecology, The University of Veterinary and Animal Sciences, Lahore, 54000 Pakistan
| | - Shaista Ali
- Department of Chemistry, Government College University, Lahore, 54000 Pakistan
| | - Khalid Mahmood Anjum
- Department of Wildlife and Ecology, The University of Veterinary and Animal Sciences, Lahore, 54000 Pakistan
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46
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Li Q, Hoppe T. Role of amino acid metabolism in mitochondrial homeostasis. Front Cell Dev Biol 2023; 11:1127618. [PMID: 36923249 PMCID: PMC10008872 DOI: 10.3389/fcell.2023.1127618] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/16/2023] [Indexed: 03/03/2023] Open
Abstract
Mitochondria are central hubs for energy production, metabolism and cellular signal transduction in eukaryotic cells. Maintenance of mitochondrial homeostasis is important for cellular function and survival. In particular, cellular metabolic state is in constant communication with mitochondrial homeostasis. One of the most important metabolic processes that provide energy in the cell is amino acid metabolism. Almost all of the 20 amino acids that serve as the building blocks of proteins are produced or degraded in the mitochondria. The synthesis of the amino acids aspartate and arginine depends on the activity of the respiratory chain, which is essential for cell proliferation. The degradation of branched-chain amino acids mainly occurs in the mitochondrial matrix, contributing to energy metabolism, mitochondrial biogenesis, as well as protein quality control in both mitochondria and cytosol. Dietary supplementation or restriction of amino acids in worms, flies and mice modulates lifespan and health, which has been associated with changes in mitochondrial biogenesis, antioxidant response, as well as the activity of tricarboxylic acid cycle and respiratory chain. Consequently, impaired amino acid metabolism has been associated with both primary mitochondrial diseases and diseases with mitochondrial dysfunction such as cancer. Here, we present recent observations on the crosstalk between amino acid metabolism and mitochondrial homeostasis, summarise the underlying molecular mechanisms to date, and discuss their role in cellular functions and organismal physiology.
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Affiliation(s)
- Qiaochu Li
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Thorsten Hoppe
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
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47
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Kinoshita C, Kubota N, Aoyama K. Glutathione Depletion and MicroRNA Dysregulation in Multiple System Atrophy: A Review. Int J Mol Sci 2022; 23:ijms232315076. [PMID: 36499400 PMCID: PMC9740333 DOI: 10.3390/ijms232315076] [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: 10/31/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/02/2022] Open
Abstract
Multiple system atrophy (MSA) is a rare neurodegenerative disease characterized by parkinsonism, cerebellar impairment, and autonomic failure. Although the causes of MSA onset and progression remain uncertain, its pathogenesis may involve oxidative stress via the generation of excess reactive oxygen species and/or destruction of the antioxidant system. One of the most powerful antioxidants is glutathione, which plays essential roles as an antioxidant enzyme cofactor, cysteine-storage molecule, major redox buffer, and neuromodulator, in addition to being a key antioxidant in the central nervous system. Glutathione levels are known to be reduced in neurodegenerative diseases. In addition, genes regulating redox states have been shown to be post-transcriptionally modified by microRNA (miRNA), one of the most important types of non-coding RNA. miRNAs have been reported to be dysregulated in several diseases, including MSA. In this review, we focused on the relation between glutathione deficiency, miRNA dysregulation and oxidative stress and their close relation with MSA pathology.
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Affiliation(s)
- Chisato Kinoshita
- Department of Pharmacology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan
- Correspondence: (C.K.); (K.A.); Tel.: +81-3-3964-3794 (C.K.); +81-3-3964-1211 (K.A.)
| | - Noriko Kubota
- Department of Pharmacology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan
- Teikyo University Support Center for Women Physicians and Researchers, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan
| | - Koji Aoyama
- Department of Pharmacology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan
- Correspondence: (C.K.); (K.A.); Tel.: +81-3-3964-3794 (C.K.); +81-3-3964-1211 (K.A.)
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48
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Sing TL, Brar GA, Ünal E. Gametogenesis: Exploring an Endogenous Rejuvenation Program to Understand Cellular Aging and Quality Control. Annu Rev Genet 2022; 56:89-112. [PMID: 35878627 PMCID: PMC9712276 DOI: 10.1146/annurev-genet-080320-025104] [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] [Indexed: 01/07/2023]
Abstract
Gametogenesis is a conserved developmental program whereby a diploid progenitor cell differentiates into haploid gametes, the precursors for sexually reproducing organisms. In addition to ploidy reduction and extensive organelle remodeling, gametogenesis naturally rejuvenates the ensuing gametes, leading to resetting of life span. Excitingly, ectopic expression of the gametogenesis-specific transcription factor Ndt80 is sufficient to extend life span in mitotically dividing budding yeast, suggesting that meiotic rejuvenation pathways can be repurposed outside of their natural context. In this review, we highlight recent studies of gametogenesis that provide emerging insight into natural quality control, organelle remodeling, and rejuvenation strategies that exist within a cell. These include selective inheritance, programmed degradation, and de novo synthesis, all of which are governed by the meiotic gene expression program entailing many forms of noncanonical gene regulation. Finally, we highlight critical questions that remain in the field and provide perspective on the implications of gametogenesis research on human health span.
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Affiliation(s)
- Tina L Sing
- Department of Molecular and Cell Biology, University of California, Berkeley, California, USA;
| | - Gloria A Brar
- Department of Molecular and Cell Biology, University of California, Berkeley, California, USA;
| | - Elçin Ünal
- Department of Molecular and Cell Biology, University of California, Berkeley, California, USA;
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Qin X, Zhang S, Guo X, Liu X, Shen XC. A cascading-response fluorescent probe for real-time pH monitoring during cysteine-depletion process in pancreatic cancer cells. Front Bioeng Biotechnol 2022; 10:1062781. [PMID: 36406226 PMCID: PMC9669487 DOI: 10.3389/fbioe.2022.1062781] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 10/17/2022] [Indexed: 08/11/2023] Open
Abstract
Pancreatic cancer (PC) is one of the deadliest human malignancies, and exploring the complex molecular mechanisms behind cell death will greatly promote the clinical treatment of PC. Here, we reported a cascading-response fluorescent-imaging probe, Cy-Cys-pH, for the sequential detection of cysteine (Cys) and pH in pancreatic cancer cells. In the presence of Cys, Cys-mediated cleavage of the acrylate group caused Cy-Cys-pH to be transformed into Cy-Cys-O, which induced intense fluorescence enhancement at 725 nm. Then, Cy-Cys-O was protonated to obtain Cy-Cys-OH and the fluorescence emission shifted to 682 nm, showing a ratiometric pH response. Furthermore, Cy-Cys-pH can monitor the intracellular pH during the therapeutic process with anticancer drugs and evaluated the ability of three anticancer drugs to kill Panc-1 cells, proving that associating Cys and pH is in part an effective anticancer strategy in the treatment of pancreatic cancer. Significantly, Cy-Cys-pH is able to monitor and image pH changes during Cys depletion in real-time, which further reveals the molecular mechanism of Cys-depleted pancreatic cancer cell death, providing a powerful molecular tool for the precise treatment of PC.
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White AJ, Harper CS, Rosario EM, Dietz JV, Addis HG, Fox JL, Khalimonchuk O, Lackner LL. Loss of Num1-mediated cortical dynein anchoring negatively impacts respiratory growth. J Cell Sci 2022; 135:jcs259980. [PMID: 36185004 PMCID: PMC9687553 DOI: 10.1242/jcs.259980] [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: 03/02/2022] [Accepted: 09/26/2022] [Indexed: 01/29/2023] Open
Abstract
Num1 is a multifunctional protein that both tethers mitochondria to the plasma membrane and anchors dynein to the cell cortex during nuclear inheritance. Previous work has examined the impact loss of Num1-based mitochondrial tethering has on dynein function in Saccharomyces cerevisiae; here, we elucidate its impact on mitochondrial function. We find that like mitochondria, Num1 is regulated by changes in metabolic state, with the protein levels and cortical distribution of Num1 differing between fermentative and respiratory growth conditions. In cells lacking Num1, we observe a reproducible respiratory growth defect, suggesting a role for Num1 in not only maintaining mitochondrial morphology, but also function. A structure-function approach revealed that, unexpectedly, Num1-mediated cortical dynein anchoring is important for normal growth under respiratory conditions. The severe respiratory growth defect in Δnum1 cells is not specifically due to the canonical functions of dynein in nuclear migration but is dependent on the presence of dynein, as deletion of DYN1 in Δnum1 cells partially rescues respiratory growth. We hypothesize that misregulated dynein present in cells that lack Num1 negatively impacts mitochondrial function resulting in defects in respiratory growth.
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Affiliation(s)
- Antoineen J. White
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA
| | - Clare S. Harper
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA
| | - Erica M. Rosario
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA
| | - Jonathan V. Dietz
- Department of Biochemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Hannah G. Addis
- Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC 29424, USA
| | - Jennifer L. Fox
- Department of Chemistry and Biochemistry, College of Charleston, Charleston, SC 29424, USA
| | - Oleh Khalimonchuk
- Department of Biochemistry, University of Nebraska, Lincoln, NE 68588, USA
- Nebraska Redox Biology Center, University of Nebraska, Lincoln, NE 68588, USA
- Fred & Pamela Buffett Cancer Center, Omaha, NE 68198, USA
| | - Laura L. Lackner
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA
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