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Choudhury D, Rong N, Senthil Kumar HV, Swedick S, Samuel RZ, Mehrotra P, Toftegaard J, Rajabian N, Thiyagarajan R, Podder AK, Wu Y, Shahini S, Seldeen KL, Troen B, Lei P, Andreadis ST. Proline restores mitochondrial function and reverses aging hallmarks in senescent cells. Cell Rep 2024; 43:113738. [PMID: 38354087 DOI: 10.1016/j.celrep.2024.113738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/04/2023] [Accepted: 01/19/2024] [Indexed: 02/16/2024] Open
Abstract
Mitochondrial dysfunction is a hallmark of cellular senescence, with the loss of mitochondrial function identified as a potential causal factor contributing to senescence-associated decline in cellular functions. Our recent findings revealed that ectopic expression of the pluripotency transcription factor NANOG rejuvenates dysfunctional mitochondria of senescent cells by rewiring metabolic pathways. In this study, we report that NANOG restores the expression of key enzymes, PYCR1 and PYCR2, in the proline biosynthesis pathway. Additionally, senescent mesenchymal stem cells manifest severe mitochondrial respiratory impairment, which is alleviated through proline supplementation. Proline induces mitophagy by activating AMP-activated protein kinase α and upregulating Parkin expression, enhancing mitochondrial clearance and ultimately restoring cell metabolism. Notably, proline treatment also mitigates several aging hallmarks, including DNA damage, senescence-associated β-galactosidase, inflammatory cytokine expressions, and impaired myogenic differentiation capacity. Overall, this study highlights the role of proline in mitophagy and its potential in reversing senescence-associated mitochondrial dysfunction and aging hallmarks.
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Affiliation(s)
- Debanik Choudhury
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Na Rong
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | | | - Sydney Swedick
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Ronel Z Samuel
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Pihu Mehrotra
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - John Toftegaard
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Nika Rajabian
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Ramkumar Thiyagarajan
- Department of Medicine, Division of Geriatrics and Palliative Medicine, Buffalo, NY 14203, USA
| | - Ashis K Podder
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Yulun Wu
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Shahryar Shahini
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Kenneth L Seldeen
- Department of Medicine, Division of Geriatrics and Palliative Medicine, Buffalo, NY 14203, USA
| | - Bruce Troen
- Department of Medicine, Division of Geriatrics and Palliative Medicine, Buffalo, NY 14203, USA
| | - Pedro Lei
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
| | - Stelios T Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA; Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14260, USA; Center of Excellence in Bioinformatics and Life Sciences, University at Buffalo, Buffalo, NY 14263, USA; Center for Cell, Gene and Tissue Engineering (CGTE), University at Buffalo, Buffalo, NY 14260, USA.
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Choudhury D, Rong N, Ikhapoh I, Rajabian N, Tseropoulos G, Wu Y, Mehrotra P, Thiyagarajan R, Shahini A, Seldeen KL, Troen B, Lei P, Andreadis ST. Inhibition of glutaminolysis restores mitochondrial function in senescent stem cells. Cell Rep 2022; 41:111744. [PMID: 36450260 PMCID: PMC9809151 DOI: 10.1016/j.celrep.2022.111744] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 07/07/2022] [Accepted: 11/07/2022] [Indexed: 12/03/2022] Open
Abstract
Mitochondrial dysfunction, a hallmark of aging, has been associated with the onset of aging phenotypes and age-related diseases. Here, we report that impaired mitochondrial function is associated with increased glutamine catabolism in senescent human mesenchymal stem cells (MSCs) and myofibroblasts derived from patients suffering from Hutchinson-Gilford progeria syndrome. Increased glutaminase (GLS1) activity accompanied by loss of urea transporter SLC14A1 induces urea accumulation, mitochondrial dysfunction, and DNA damage. Conversely, blocking GLS1 activity restores mitochondrial function and leads to amelioration of aging hallmarks. Interestingly, GLS1 expression is regulated through the JNK pathway, as demonstrated by chemical and genetic inhibition. In agreement with our in vitro findings, tissues isolated from aged or progeria mice display increased urea accumulation and GLS1 activity, concomitant with declined mitochondrial function. Inhibition of glutaminolysis in progeria mice improves mitochondrial respiratory chain activity, suggesting that targeting glutaminolysis may be a promising strategy for restoring age-associated loss of mitochondrial function.
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Affiliation(s)
- Debanik Choudhury
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Na Rong
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Izuagie Ikhapoh
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Nika Rajabian
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Georgios Tseropoulos
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Yulun Wu
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Pihu Mehrotra
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Ramkumar Thiyagarajan
- Department of Medicine, Division of Geriatrics and Palliative medicine, Buffalo, NY 14203
| | - Aref Shahini
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Kenneth L. Seldeen
- Department of Medicine, Division of Geriatrics and Palliative medicine, Buffalo, NY 14203
| | - Bruce Troen
- Department of Medicine, Division of Geriatrics and Palliative medicine, Buffalo, NY 14203
| | - Pedro Lei
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260
| | - Stelios T. Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260,Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14260,Center of Excellence in Bioinformatics and Life Sciences, University at Buffalo, Buffalo, NY 14263,Center for Cell, Gene and Tissue Engineering (CGTE), University at Buffalo, Buffalo, NY 14260,Address for all Correspondence: Stelios T. Andreadis, Ph.D., SUNY Distinguished Professor, Bioengineering Laboratory, 908 Furnas Hall, Department of Chemical and Biological Engineering, Department of Biomedical Engineering, and Center of Excellence in Bioinformatics and Life Sciences, Center for Cell, Gene and Tissue Engineering (CGTE), University at Buffalo, The State University of New York, Amherst, NY 14260-4200, USA, Tel: (716) 645-1202, Fax: (716) 645-3822,
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Thiyagarajan R, Redae Y, Seldeen K, Troen B. Cognitively Impaired Old Mice Display Correlated Reduction in Cortical NMDA Receptor and Complex IV. Innov Aging 2020. [PMCID: PMC7741272 DOI: 10.1093/geroni/igaa057.388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Cognitive decline in older adults represents a major challenge since cognitive impairment is found in 10% of those ≥ 65 and 50% ≥ 85. Thus it is increasingly important to understand the impact of aging on cognitive health. We performed a battery of tests to assess cognition in 6 month-old (n=12) and 24 month-old (n=8) C57BL/6J mice, equivalent to 30 and 70 year old humans, respectively, and also assessed protein markers in cortex for mitochondrial health and cognition. We found that aged mice displayed fewer spontaneous alternations in the T maze test (p=0.034) and lower recognition of novel objects (p=0.022). In addition, aged mice showed prolonged escape time in the Barnes maze (p=0.035), all of which taken together suggest reduced capacity for learning and recall. Aged mice also exhibited diminished nest building (p<0.001), revealing an impaired functional capacity analogous to the instrumental activities of daily living (IADL) geriatric assessment. We found reduced mitochondrial complex IV expression in the cortices of aged mice concomitant with less expression of N-Methyl D-Aspartate (NMDA) receptor subunits 1, 2A and 2B. The cortices from old mice also exhibited greater expression of immature brain derived neurotrophic factor (pro-BDNF). The alterations in NMDA receptors and pro BDNF are consistent with memory impairment and greater neuronal cell death. Therefore, aged mice exhibit significantly reduced recall and learning ability alongside marked alterations in mitochondrial complex, NMDA receptor, and pro-BDNF expression. Studies are underway to assess whether these molecular changes are responsible for the cognitive declines with aging.
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Affiliation(s)
| | - Yonas Redae
- University at Buffalo, Buffalo, New York, United States
| | | | - Bruce Troen
- University at Buffalo, Buffalo, New York, United States
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Russ M, Pang M, Troen B, Rudin S, Ionita C. SU-E-T-143: Effect of X-Ray and Cone Beam CT Reconstruction Parameters On Estimation of Bone Volume of Mice Used in Aging Research. Med Phys 2014. [DOI: 10.1118/1.4888473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Moonga BS, Adebanjo OA, Wang HJ, Li S, Wu XB, Troen B, Inzerillo A, Abe E, Minkin C, Huang CLH, Zaidi M. Differential effects of interleukin-6 receptor activation on intracellular signaling and bone resorption by isolated rat osteoclasts. J Endocrinol 2002; 173:395-405. [PMID: 12065229 DOI: 10.1677/joe.0.1730395] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The effects of the related cytokines interleukin-6 (IL-6), leukemia inhibitory factor (LIF) and oncostatin-M on bone resorption and cytosolic Ca(2+) signaling were compared in isolated rat osteoclasts. In the traditional disaggregated osteoclast (pit) assay, IL-6 and LIF, but not oncostatin-M, conserved the bone resorption otherwise inhibited by high extracellular [Ca(2+)] (15 mM). It produced a paradoxical, concentration-dependent stimulation of resorption by elevated extracellular Ca(2+). In the micro-isolated single osteoclast resorption assay, IL-6, high [Ca(2+)] or IL-6 plus high [Ca(2+)] all increased pit formation. In contrast, the IL-6 receptor (IL-6R)-specific agonist antibody MT-18 inhibited bone resorption in a concentration-dependent manner (1:500 to 1:500 000). MT-18 triggered cytosolic Ca(2+) signals in fura 2-loaded osteoclasts within approximately 10 min of application. Each cytosolic Ca(2+) transient began with a peak deflection that persisted in Ca(2+)-free, EGTA-containing extracellular medium, consistent with a release of intracellularly stored Ca(2+). This was followed by a sustained elevation of cytosolic [Ca(2+)] that was abolished in Ca(2+)-free medium, as expected from an entry of extracellular Ca(2+), and by the Ca(2+) channel antagonist Ni(2+). The inclusion of either IL-6 or soluble human (sh) IL-6R specifically reversed both the above effects of MT-18, confirming that both effects were specific for the IL-6R. The findings suggest that IL-6R activation by IL-6 stimulates osteoclastic bone resorption either by reversing the inhibitory effect of high extracellular Ca(2+) in stromal-containing systems or itself stimulating bone resorption along with Ca(2+) by micro-isolated osteoclasts. In contrast, activation of the IL-6R by an agonist antibody produces an inhibition of bone resorption and an associated triggering of the cytosolic Ca(2+) signals previously associated with regulation of bone resorptive function in other situations.
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Affiliation(s)
- B S Moonga
- The Mount Sinai Bone Program and the Division of Endocrinology, Diabetes and Bone Diseases, Mount Sinai School of Medicine, New York, NY 10029, USA
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