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Lian B, Zhang J, Yin X, Wang J, Li L, Ju Q, Wang Y, Jiang Y, Liu X, Chen Y, Tang X, Sun C. SIRT1 improves lactate homeostasis in the brain to alleviate parkinsonism via deacetylation and inhibition of PKM2. Cell Rep Med 2024; 5:101684. [PMID: 39128469 DOI: 10.1016/j.xcrm.2024.101684] [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: 08/03/2023] [Revised: 04/15/2024] [Accepted: 07/22/2024] [Indexed: 08/13/2024]
Abstract
Sirtuin 1 (SIRT1) is a histone deacetylase and plays diverse functions in various physiological events, from development to lifespan regulation. Here, in Parkinson's disease (PD) model mice, we demonstrated that SIRT1 ameliorates parkinsonism, while SIRT1 knockdown further aggravates PD phenotypes. Mechanistically, SIRT1 interacts with and deacetylates pyruvate kinase M2 (PKM2) at K135 and K206, thus leading to reduced PKM2 enzyme activity and lactate production, which eventually results in decreased glial activation in the brain. Administration of lactate in the brain recapitulates PD-like phenotypes. Furthermore, increased expression of PKM2 worsens PD symptoms, and, on the contrary, inhibition of PKM2 by shikonin or PKM2-IN-1 alleviates parkinsonism in mice. Collectively, our data indicate that excessive lactate in the brain might be involved in the progression of PD. By improving lactate homeostasis, SIRT1, together with PKM2, are likely drug targets for developing agents for the treatment of neurodegeneration in PD.
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Affiliation(s)
- Bolin Lian
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China; School of Life Sciences, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, China
| | - Jing Zhang
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China
| | - Xiang Yin
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China
| | - Jiayan Wang
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China
| | - Li Li
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China
| | - Qianqian Ju
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China
| | - Yuejun Wang
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China
| | - Yuhui Jiang
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China
| | - Xiaoyu Liu
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China
| | - Yu Chen
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong 226001, China.
| | - Xin Tang
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China.
| | - Cheng Sun
- Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, Jiangsu 226001, China.
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Bian X, Li M, Lou S. Resistance training boosts lactate transporters and synaptic proteins in insulin-resistance mice. Heliyon 2024; 10:e34425. [PMID: 39082040 PMCID: PMC11284409 DOI: 10.1016/j.heliyon.2024.e34425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 07/09/2024] [Accepted: 07/09/2024] [Indexed: 08/02/2024] Open
Abstract
Background This investigation delineates the influence of resistance training on the expression of synaptic plasticity-related proteins in the hippocampi of insulin-resistant mice and explores the underlying molecular mechanisms. Methods Six-week-old male C57BL/6 J mice were stratified into a control group and a high-fat diet group to induce insulin resistance over a 12-week period. Subsequently, the mice were further divided into sedentary and resistance training cohorts, with the latter engaging in a 12-week ladder-climbing regimen. Post-intervention, blood, and hippocampal specimens were harvested for analytical evaluation. Results In the insulin-resistant mice, elevated blood lactate levels were observed alongside diminished expression of synaptic plasticity-related proteins, monocarboxylate transporters (MCTs), and reduced phosphorylation of protein kinase B (Akt) and mechanistic target of rapamycin (mTOR). In contrast, the expression of eukaryotic translation initiation factor 4 E-binding protein 2 was significantly augmented. Resistance training mitigated insulin resistance, decreased blood lactate levels, and enhanced the expression and phosphorylation of mTOR, regulatory-associated protein of mTOR, MCTs, and synaptic plasticity-related proteins. Conclusions Resistance training mitigates insulin resistance and improves hippocampal synaptic plasticity by normalizing blood lactate levels and enhancing mTOR, MCTs, and synaptic plasticity-related proteins. It may also activate mTORC1 via the PI3K/Akt pathway, promote lactate utilization, and enhance synaptic plasticity proteins, potentially alleviating peripheral insulin resistance. Further research is needed to confirm these mechanisms.
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Affiliation(s)
- Xuepeng Bian
- Department of Rehabilitation, School of International Medical Technology, Shanghai Sanda University, Shanghai, China
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Mingming Li
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Shujie Lou
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
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Kuppusamy P, Haque MM, Traub RJ, Melemedjian OK. Targeting metabolic pathways alleviates bortezomib-induced neuropathic pain without compromising anticancer efficacy in a sex-specific manner. FRONTIERS IN PAIN RESEARCH 2024; 5:1424348. [PMID: 38979441 PMCID: PMC11228363 DOI: 10.3389/fpain.2024.1424348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Accepted: 06/10/2024] [Indexed: 07/10/2024] Open
Abstract
Introduction Chemotherapy-induced peripheral neuropathy (CIPN) is a debilitating side effect of cancer treatment that significantly impacts patients' quality of life. This study investigated the effects of targeting metabolic pathways on bortezomib-induced neuropathic pain and tumor growth using a Lewis lung carcinoma (LLC) mouse model, while exploring potential sex differences. Methods Male and female C57BL/6J mice were implanted with LLC cells and treated with bortezomib alone or in combination with metformin, dichloroacetate (DCA), or oxamate. Tactile allodynia was assessed using von Frey filaments. Tumor volume and weight were measured to evaluate tumor growth. Results Metformin, DCA, and oxamate effectively attenuated bortezomib-induced neuropathic pain without compromising the anticancer efficacy of bortezomib in both male and female mice. The LLC model exhibited a paraneoplastic neuropathy-like phenotype. Significant sex differences were observed, with male mice exhibiting larger tumors compared to females. Oxamate was more effective in alleviating allodynia in males, while metformin and DCA showed greater efficacy in reducing tumor growth in females. Discussion Targeting metabolic pathways can alleviate CIPN without interfering with bortezomib's anticancer effects. The LLC model may serve as a tool for studying paraneoplastic neuropathy. Sex differences in tumor growth and response to metabolic interventions highlight the importance of considering sex as a biological variable in preclinical and clinical studies investigating cancer biology, CIPN, and potential therapeutic interventions.
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Affiliation(s)
- Panjamurthy Kuppusamy
- Department of Neural and Pain Sciences, University of Maryland School of Dentistry, Baltimore, MD, United States
| | - Md Mamunul Haque
- Department of Neural and Pain Sciences, University of Maryland School of Dentistry, Baltimore, MD, United States
| | - Richard J. Traub
- Department of Neural and Pain Sciences, University of Maryland School of Dentistry, Baltimore, MD, United States
- UM Center to Advance Chronic Pain Research, Baltimore, MD, United States
| | - Ohannes K. Melemedjian
- Department of Neural and Pain Sciences, University of Maryland School of Dentistry, Baltimore, MD, United States
- UM Center to Advance Chronic Pain Research, Baltimore, MD, United States
- UM Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD, United States
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Zeng X, Wang H, Deng Y, Deng Z, Bi W, Fu H. Causal relationship between obesity and anorectal abscess: a Mendelian randomization study. Front Med (Lausanne) 2024; 11:1437849. [PMID: 38975051 PMCID: PMC11225408 DOI: 10.3389/fmed.2024.1437849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 06/13/2024] [Indexed: 07/09/2024] Open
Abstract
Background Observational studies have indicated that obesity is a risk factor for anorectal abscess (ARB). However, it remains unclear whether a causal genetic relationship exists between obesity and ARB. Methods Univariate and multivariate Mendelian randomization (MR) were conducted using data from a large, published genome-wide association study (GWAS) of European ancestry to infer a causal relationship between obesity and ARB. Inverse variance weighted (IVW) analysis served as the primary analysis method, with results reported as odds ratios (OR). Results MR analysis revealed that body mass index (BMI) positively affects ARB (OR 1.974, 95% confidence interval (CI) 1.548-2.519, p = 4.34 × 10-8). The weighted median method (OR = 1.879, 95% CI 1.248-2.829, p = 0.002) and Bayesian model averaging (BMA) (OR = 1.88, 95% CI 1.477-2.392, p = 2.85 × 10-7) also demonstrated consistent results. Subsequently, the impact of several obesity-related characteristics on ARB was assessed. Body fat percentage (BF), whole body fat mass (FM), waist circumference (WC), and hip circumference (HC) were found to be causally associated with an increased risk of ARB. However, these associations vanished after adjusting for BMI effects. Conclusion The study confirms a positive causal effect of obesity on ARB, highlighting that reasonable weight control is an important strategy to reduce the incidence of ARB.
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Affiliation(s)
- XiaoYu Zeng
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - HanYu Wang
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yang Deng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - ZhiYu Deng
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wei Bi
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hao Fu
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Koltai T, Fliegel L. Dichloroacetate for Cancer Treatment: Some Facts and Many Doubts. Pharmaceuticals (Basel) 2024; 17:744. [PMID: 38931411 PMCID: PMC11206832 DOI: 10.3390/ph17060744] [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: 03/28/2024] [Revised: 05/23/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
Rarely has a chemical elicited as much controversy as dichloroacetate (DCA). DCA was initially considered a dangerous toxic industrial waste product, then a potential treatment for lactic acidosis. However, the main controversies started in 2008 when DCA was found to have anti-cancer effects on experimental animals. These publications showed contradictory results in vivo and in vitro such that a thorough consideration of this compound's in cancer is merited. Despite 50 years of experimentation, DCA's future in therapeutics is uncertain. Without adequate clinical trials and health authorities' approval, DCA has been introduced in off-label cancer treatments in alternative medicine clinics in Canada, Germany, and other European countries. The lack of well-planned clinical trials and its use by people without medical training has discouraged consideration by the scientific community. There are few thorough clinical studies of DCA, and many publications are individual case reports. Case reports of DCA's benefits against cancer have been increasing recently. Furthermore, it has been shown that DCA synergizes with conventional treatments and other repurposable drugs. Beyond the classic DCA target, pyruvate dehydrogenase kinase, new target molecules have also been recently discovered. These findings have renewed interest in DCA. This paper explores whether existing evidence justifies further research on DCA for cancer treatment and it explores the role DCA may play in it.
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Affiliation(s)
- Tomas Koltai
- Hospital del Centro Gallego de Buenos Aires, Buenos Aires 2199, Argentina
| | - Larry Fliegel
- Department of Biochemistry, University Alberta, Edmonton, AB T6G 2H7, Canada;
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Ayyangar U, Karkhanis A, Tay H, Afandi AFB, Bhattacharjee O, Ks L, Lee SH, Chan J, Raghavan S. Metabolic rewiring of macrophages by epidermal-derived lactate promotes sterile inflammation in the murine skin. EMBO J 2024; 43:1113-1134. [PMID: 38418556 PMCID: PMC10987662 DOI: 10.1038/s44318-024-00039-y] [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: 02/15/2023] [Revised: 01/02/2024] [Accepted: 01/08/2024] [Indexed: 03/01/2024] Open
Abstract
Dysregulated macrophage responses and changes in tissue metabolism are hallmarks of chronic inflammation in the skin. However, the metabolic cues that direct and support macrophage functions in the skin are poorly understood. Here, we show that during sterile skin inflammation, the epidermis and macrophages uniquely depend on glycolysis and the TCA cycle, respectively. This compartmentalisation is initiated by ROS-induced HIF-1α stabilization leading to enhanced glycolysis in the epidermis. The end-product of glycolysis, lactate, is then exported by epithelial cells and utilized by the dermal macrophages to induce their M2-like fates through NF-κB pathway activation. In addition, we show that psoriatic skin disorder is also driven by such lactate metabolite-mediated crosstalk between the epidermis and macrophages. Notably, small-molecule inhibitors of lactate transport in this setting attenuate sterile inflammation and psoriasis disease burden, and suppress M2-like fate acquisition in dermal macrophages. Our study identifies an essential role for the metabolite lactate in regulating macrophage responses to inflammation, which may be effectively targeted to treat inflammatory skin disorders such as psoriasis.
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Affiliation(s)
- Uttkarsh Ayyangar
- Centre for Inflammation and Tissue Homeostasis, Institute for Stem Cell Science and Regenerative Medicine, Bangalore, India.
- School for Chemical and Biotechnology, Sastra University, Thanjavur, India.
| | - Aneesh Karkhanis
- A*Star Skin Research Labs, Agency for Science, Technology and Research, Singapore, Singapore
| | - Heather Tay
- A*Star Skin Research Labs, Agency for Science, Technology and Research, Singapore, Singapore
| | | | - Oindrila Bhattacharjee
- Centre for Inflammation and Tissue Homeostasis, Institute for Stem Cell Science and Regenerative Medicine, Bangalore, India
| | - Lalitha Ks
- Animal Care and Resource Centre (ACRC), National Centre for Biological Sciences (NCBS), Bangalore, India
| | - Sze Han Lee
- A*Star Skin Research Labs, Agency for Science, Technology and Research, Singapore, Singapore
| | - James Chan
- A*Star Skin Research Labs, Agency for Science, Technology and Research, Singapore, Singapore
- Singapore Institute of Food and Biotechnology Innovation, Agency for Science Technology and Research, Singapore, Singapore
| | - Srikala Raghavan
- Centre for Inflammation and Tissue Homeostasis, Institute for Stem Cell Science and Regenerative Medicine, Bangalore, India.
- A*Star Skin Research Labs, Agency for Science, Technology and Research, Singapore, Singapore.
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Ma XM, Geng K, Wang P, Jiang Z, Law BYK, Xu Y. MCT4-dependent lactate transport: a novel mechanism for cardiac energy metabolism injury and inflammation in type 2 diabetes mellitus. Cardiovasc Diabetol 2024; 23:96. [PMID: 38486199 PMCID: PMC10941417 DOI: 10.1186/s12933-024-02178-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 02/24/2024] [Indexed: 03/17/2024] Open
Abstract
Diabetic cardiomyopathy (DCM) is a major contributor to mortality in diabetic patients, characterized by a multifaceted pathogenesis and limited therapeutic options. While lactate, a byproduct of glycolysis, is known to be significantly elevated in type 2 diabetes, its specific role in DCM remains uncertain. This study reveals an abnormal upregulation of monocarboxylate transporter 4 (MCT4) on the plasma membrane of cardiomyocytes in type 2 diabetes, leading to excessive lactate efflux from these cells. The disruption in lactate transport homeostasis perturbs the intracellular lactate-pyruvate balance in cardiomyocytes, resulting in oxidative stress and inflammatory responses that exacerbate myocardial damage. Additionally, our findings suggest increased lactate efflux augments histone H4K12 lactylation in macrophages, facilitating inflammatory infiltration within the microenvironment. In vivo experiments have demonstrated that inhibiting MCT4 effectively alleviates myocardial oxidative stress and pathological damage, reduces inflammatory macrophage infiltration, and enhances cardiac function in type 2 diabetic mice. Furthermore, a clinical prediction model has been established, demonstrating a notable association between peripheral blood lactate levels and diastolic dysfunction in individuals with type 2 diabetes. This underscores the potential of lactate as a prognostic biomarker for DCM. Ultimately, our findings highlight the pivotal involvement of MCT4 in the dysregulation of cardiac energy metabolism and macrophage-mediated inflammation in type 2 diabetes. These insights offer novel perspectives on the pathogenesis of DCM and pave the way for the development of targeted therapeutic strategies against this debilitating condition.
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Affiliation(s)
- Xiu Mei Ma
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China
- Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, 646000, Sichuan, People's Republic of China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, People's Republic of China
| | - Kang Geng
- Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, 646000, Sichuan, People's Republic of China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, People's Republic of China
| | - Peng Wang
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China
| | - Zongzhe Jiang
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
- Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, 646000, Sichuan, People's Republic of China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, People's Republic of China
| | - Betty Yuen-Kwan Law
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China.
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China.
| | - Yong Xu
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China.
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China.
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China.
- Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, 646000, Sichuan, People's Republic of China.
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, People's Republic of China.
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Shamis SA, Savioli F, Ammar A, Al-Badran SS, Hatthakarnkul P, Leslie H, Mallon EE, Jamieson NB, McMillan DC, Edwards J. Spatial transcriptomic analysis of tumour with high and low CAIX expression in TNBC tissue samples using GeoMx™ RNA assay. Histol Histopathol 2024; 39:177-200. [PMID: 37681672 DOI: 10.14670/hh-18-655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
PURPOSE Prognostic significance and gene signatures associated with carbonic anhydrase IX (CAIX) was investigated in triple negative breast cancer (TNBC) patients. METHODS Immunohistochemistry (IHC) for CAIX was performed in tissue microarrays (TMAs) of 136 TNBC patients. In a subset of 52 patients Digital Spatial Profiler (DSP) was performed in tumour (pan-cytokeratin+) and stroma (pan-cytokeratin-). Differentially expressed genes (DEGs) with P<0.05 and and log2 fold change (FC)>(±0.25 and ±0.3, for tumour and stromal compartment, respectively) were identified. Four genes were validated at the protein level. RESULT Cytoplasmic CAIX expression was independently associated with poor recurrence free survival in TNBC patients [hazard ratio (HR)=6.59, 95% confidence interval (CI): 1.47-29.58, P=0.014]. DEG analysis identified 4 up-regulated genes (CD68, HIF1A, pan-melanocyte, and VSIR) in the tumour region and 9 down-regulated genes in the stromal region (CD86, CD3E, MS4A1, BCL2, CCL5, NKG7, PTPRC, CD27, and FAS) when low versus high CAIX expression was explored. Employing IHC, high CD68 and HIF-1α was associated with poorer prognosis and high BCL2 and CD3 was associated with good prognosis. CONCLUSIONS DSP technology identified DEGs in TNBC. Selected genes validated by IHC showed involvement of CD3 and BCL2 expression within stroma and HIF-1α, and CD68 expression within tumour. However, further functional analysis is warranted.
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Affiliation(s)
- Suad Ak Shamis
- Academic Unit of Surgery, School of Medicine, University of Glasgow, Royal Infirmary, Alexandria Parade, Glasgow, United Kingdom.
- Unit of Molecular Pathology, School of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Glasgow, United Kingdom
| | - Francesca Savioli
- Academic Unit of Surgery, School of Medicine, University of Glasgow, Royal Infirmary, Alexandria Parade, Glasgow, United Kingdom.
| | - Aula Ammar
- Unit of Molecular Pathology, School of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Glasgow, United Kingdom
| | - Sara Sf Al-Badran
- Unit of Molecular Pathology, School of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Glasgow, United Kingdom
| | - Phimmada Hatthakarnkul
- Unit of Molecular Pathology, School of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Glasgow, United Kingdom
| | - Holly Leslie
- Unit of Molecular Pathology, School of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Glasgow, United Kingdom
| | - Elizabeth Ea Mallon
- Department of Pathology, Queen Elizabeth University Hospital, Glasgow, United Kingdom
| | - Nigel B Jamieson
- Unit of Molecular Pathology, School of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Glasgow, United Kingdom
| | - Donald C McMillan
- Academic Unit of Surgery, School of Medicine, University of Glasgow, Royal Infirmary, Alexandria Parade, Glasgow, United Kingdom.
| | - Joanne Edwards
- Unit of Molecular Pathology, School of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Glasgow, United Kingdom
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Chen J, Li G, Sun D, Li H, Chen L. Research progress of hexokinase 2 in inflammatory-related diseases and its inhibitors. Eur J Med Chem 2024; 264:115986. [PMID: 38011767 DOI: 10.1016/j.ejmech.2023.115986] [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: 10/02/2023] [Revised: 11/14/2023] [Accepted: 11/19/2023] [Indexed: 11/29/2023]
Abstract
Hexokinase 2 (HK2) is a crucial enzyme involved in glycolysis, which converts glucose into glucose-6-phosphate and plays a significant role in glucose metabolism. HK2 can mediate glycolysis, which is linked to the release of inflammatory factors. The over-expression of HK2 increases the production of pro-inflammatory cytokines, exacerbating the inflammatory reaction. Consequently, HK2 is closely linked to various inflammatory-related diseases affecting multiple systems, including the digestive, nervous, circulatory, respiratory, reproductive systems, as well as rheumatoid arthritis. HK2 is regarded as a novel therapeutic target for inflammatory-related diseases, and this article provides a comprehensive review of its roles in these conditions. Furthermore, the development of potent HK2 inhibitors has garnered significant attention in recent years. Therefore, this review also presents a summary of potential HK2 inhibitors, offering promising prospects for the treatment of inflammatory-related diseases in the future.
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Affiliation(s)
- Jinxia Chen
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Guirong Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Dejuan Sun
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China.
| | - Hua Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China; Institute of Structural Pharmacology & TCM Chemical Biology, College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, China.
| | - Lixia Chen
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, 110016, China.
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Roy RM, Allawzi A, Burns N, Sul C, Rubio V, Graham J, Stenmark K, Nozik ES, Tuder RM, Vohwinkel CU. Lactate produced by alveolar type II cells suppresses inflammatory alveolar macrophages in acute lung injury. FASEB J 2023; 37:e23316. [PMID: 37983890 PMCID: PMC10914122 DOI: 10.1096/fj.202301722r] [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: 08/25/2023] [Revised: 10/26/2023] [Accepted: 11/01/2023] [Indexed: 11/22/2023]
Abstract
Alveolar inflammation is a hallmark of acute lung injury (ALI), and its clinical correlate is acute respiratory distress syndrome-and it is as a result of interactions between alveolar type II cells (ATII) and alveolar macrophages (AM). In the setting of acute injury, the microenvironment of the intra-alveolar space is determined in part by metabolites and cytokines and is known to shape the AM phenotype. In response to ALI, increased glycolysis is observed in AT II cells, mediated by the transcription factor hypoxia-inducible factor (HIF) 1α, which has been shown to decrease inflammation. We hypothesized that in acute lung injury, lactate, the end product of glycolysis, produced by ATII cells shifts AMs toward an anti-inflammatory phenotype, thus mitigating ALI. We found that local intratracheal delivery of lactate improved ALI in two different mouse models. Lactate shifted cytokine expression of murine AMs toward increased IL-10, while decreasing IL-1 and IL-6 expression. Mice with ATII-specific deletion of Hif1a and mice treated with an inhibitor of lactate dehydrogenase displayed exacerbated ALI and increased inflammation with decreased levels of lactate in the bronchoalveolar lavage fluid; however, all those parameters improved with intratracheal lactate. When exposed to LPS (to recapitulate an inflammatory stimulus as it occurs in ALI), human primary AMs co-cultured with alveolar epithelial cells had reduced inflammatory responses. Taken together, these studies reveal an innate protective pathway, in which lactate produced by ATII cells shifts AMs toward an anti-inflammatory phenotype and dampens excessive inflammation in ALI.
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Affiliation(s)
- René M. Roy
- Children’s Hospital Colorado, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Ayed Allawzi
- Division of Pediatric Critical Care, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Nana Burns
- Division of Pediatric Critical Care, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Christina Sul
- Division of Pediatric Critical Care, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Victoria Rubio
- Children’s Hospital Colorado, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
- Division of Pediatric Critical Care, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Jessica Graham
- Children’s Hospital Colorado, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Kurt Stenmark
- Division of Pediatric Critical Care, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Eva S. Nozik
- Division of Pediatric Critical Care, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Rubin M. Tuder
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
- Division of Pulmonary Sciences and Critical Care Medicine, Program in Translational Lung Research, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Christine U. Vohwinkel
- Division of Pediatric Critical Care, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
- Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, University of Colorado, Anschutz Medical Campus, Aurora, Colorado, USA
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11
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Stakišaitis D, Kapočius L, Kilimaitė E, Gečys D, Šlekienė L, Balnytė I, Palubinskienė J, Lesauskaitė V. Preclinical Study in Mouse Thymus and Thymocytes: Effects of Treatment with a Combination of Sodium Dichloroacetate and Sodium Valproate on Infectious Inflammation Pathways. Pharmaceutics 2023; 15:2715. [PMID: 38140056 PMCID: PMC10747708 DOI: 10.3390/pharmaceutics15122715] [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: 10/29/2023] [Revised: 11/17/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
The research presents data from a preclinical study on the anti-inflammatory effects of a sodium dichloroacetate and sodium valproate combination (DCA-VPA). The 2-week treatment with a DCA 100 mg/kg/day and VPA 150 mg/kg/day combination solution in drinking water's effects on the thymus weight, its cortex/medulla ratio, Hassall's corpuscles (HCs) number in the thymus medulla, and the expression of inflammatory and immune-response-related genes in thymocytes of male Balb/c mice were studied. Two groups of mice aged 6-7 weeks were investigated: a control (n = 12) and a DCA-VPA-treated group (n = 12). The treatment did not affect the body weight gain (p > 0.05), the thymus weight (p > 0.05), the cortical/medulla ratio (p > 0.05), or the number of HCs (p > 0.05). Treatment significantly increased the Slc5a8 gene expression by 2.1-fold (p < 0.05). Gene sequence analysis revealed a significant effect on the expression of inflammation-related genes in thymocytes by significantly altering the expression of several genes related to the cytokine activity pathway, the inflammatory response pathway, and the Il17 signaling pathway in thymocytes. Data suggest that DCA-VPA exerts an anti-inflammatory effect by inhibiting the inflammatory mechanisms in the mouse thymocytes.
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Affiliation(s)
- Donatas Stakišaitis
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (L.K.); (L.Š.); (I.B.); (J.P.)
- Laboratory of Molecular Oncology, National Cancer Institute, 08660 Vilnius, Lithuania
| | - Linas Kapočius
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (L.K.); (L.Š.); (I.B.); (J.P.)
| | - Evelina Kilimaitė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (L.K.); (L.Š.); (I.B.); (J.P.)
| | - Dovydas Gečys
- Laboratory of Molecular Cardiology, Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu Ave., 50161 Kaunas, Lithuania;
| | - Lina Šlekienė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (L.K.); (L.Š.); (I.B.); (J.P.)
| | - Ingrida Balnytė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (L.K.); (L.Š.); (I.B.); (J.P.)
| | - Jolita Palubinskienė
- Department of Histology and Embryology, Medical Academy, Lithuanian University of Health Sciences, 44307 Kaunas, Lithuania; (L.K.); (L.Š.); (I.B.); (J.P.)
| | - Vaiva Lesauskaitė
- Laboratory of Molecular Cardiology, Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu Ave., 50161 Kaunas, Lithuania;
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12
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Maduka CV, Alhaj M, Ural E, Habeeb OM, Kuhnert MM, Smith K, Makela AV, Pope H, Chen S, Hix JM, Mallett CL, Chung S, Hakun M, Tundo A, Zinn KR, Hankenson KD, Goodman SB, Narayan R, Contag CH. Polylactide Degradation Activates Immune Cells by Metabolic Reprogramming. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304632. [PMID: 37737614 PMCID: PMC10625072 DOI: 10.1002/advs.202304632] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/04/2023] [Indexed: 09/23/2023]
Abstract
Polylactide (PLA) is the most widely utilized biopolymer in medicine. However, chronic inflammation and excessive fibrosis resulting from its degradation remain significant obstacles to extended clinical use. Immune cell activation has been correlated to the acidity of breakdown products, yet methods to neutralize the pH have not significantly reduced adverse responses. Using a bioenergetic model, delayed cellular changes were observed that are not apparent in the short-term. Amorphous and semi-crystalline PLA degradation products, including monomeric l-lactic acid, mechanistically remodel metabolism in cells leading to a reactive immune microenvironment characterized by elevated proinflammatory cytokines. Selective inhibition of metabolic reprogramming and altered bioenergetics both reduce these undesirable high cytokine levels and stimulate anti-inflammatory signals. The results present a new biocompatibility paradigm by identifying metabolism as a target for immunomodulation to increase tolerance to biomaterials, ensuring safe clinical application of PLA-based implants for soft- and hard-tissue regeneration, and advancing nanomedicine and drug delivery.
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Affiliation(s)
- Chima V. Maduka
- Comparative Medicine & Integrative BiologyMichigan State UniversityEast LansingMI48824USA
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Mohammed Alhaj
- Department of Chemical Engineering & Materials ScienceMichigan State UniversityEast LansingMI48824USA
| | - Evran Ural
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Oluwatosin M. Habeeb
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Maxwell M. Kuhnert
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Kylie Smith
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Ashley V. Makela
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Hunter Pope
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Shoue Chen
- School of PackagingMichigan State UniversityEast LansingMI48824USA
| | - Jeremy M. Hix
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Christiane L. Mallett
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Seock‐Jin Chung
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Maxwell Hakun
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Anthony Tundo
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Kurt R. Zinn
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
| | - Kurt D. Hankenson
- Department of Orthopedic SurgeryUniversity of Michigan Medical SchoolAnn ArborMI48109USA
| | - Stuart B. Goodman
- Department of Orthopedic SurgeryStanford UniversityStanfordCA94063USA
- Department of BioengineeringStanford UniversityStanfordCA94305USA
| | - Ramani Narayan
- Department of Chemical Engineering & Materials ScienceMichigan State UniversityEast LansingMI48824USA
| | - Christopher H. Contag
- Department of Biomedical EngineeringMichigan State UniversityEast LansingMI48824USA
- Institute for Quantitative Health Science & EngineeringMichigan State UniversityEast LansingMI48824USA
- Department of Microbiology & Molecular GeneticsMichigan State UniversityEast LansingMI48864USA
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13
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Lin Y, Yan G, Wang M, Zhang K, Shu F, Liu M, Long F, Mao D. Crosstalk between lactic acid and immune regulation and its value in the diagnosis and treatment of liver failure. Open Life Sci 2023; 18:20220636. [PMID: 37724112 PMCID: PMC10505340 DOI: 10.1515/biol-2022-0636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/07/2023] [Accepted: 05/17/2023] [Indexed: 09/20/2023] Open
Abstract
Liver failure is a common clinical syndrome of severe liver diseases, which belongs to one of the critical medical conditions. Immune response plays a leading role in the pathogenesis of liver failure. Lactic acid as a target for the treatment and prediction of liver failure has not attracted enough attention. Since the emergence of the concept of "histone lactation," lactic acid has shown great promise in immune response and escape. Therefore, targeted lactic acid may be a reliable agent to solve immune and energy metabolism disorders in liver failure. Based on the relationship between lactic acid and immune response, the cross-talk between lactic acid metabolism, its compounds, and immune regulation and its significance in the diagnosis and treatment of liver failure were expounded in this article to provide new ideas for understanding and treating liver failure.
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Affiliation(s)
- Yong Lin
- Graduate School of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Gengjie Yan
- Graduate School of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Minggang Wang
- Department of Hepatology at the First Affiliated Hospital of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Kan Zhang
- Department of Hepatology at the First Affiliated Hospital of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Faming Shu
- Department of Hepatology at the First Affiliated Hospital of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Meiyan Liu
- Graduate School of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Fuli Long
- Department of Hepatology at the First Affiliated Hospital of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Dewen Mao
- Department of Hepatology at the First Affiliated Hospital of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
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14
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Hori K, Uchida Y, Kokubo K, Matsuzawa N, Kamegamori A, Iizuka T, Saito Y, Shiota K, Kidooka S, Inoue M. Factors associated with elevated blood lactate levels in patients undergoing maintenance hemodialysis. J Artif Organs 2023; 26:212-219. [PMID: 35939152 DOI: 10.1007/s10047-022-01355-y] [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: 04/16/2022] [Accepted: 07/23/2022] [Indexed: 10/15/2022]
Abstract
Factors associated with chronic elevation of the blood lactate levels in patients undergoing chronic maintenance hemodialysis (hereinafter, hemodialysis patients) have not yet been thoroughly investigated. The purpose of the present study was to clarify factors associated with elevated blood lactate levels in hemodialysis patients. We divided the hemodialysis patients into two groups according the blood lactate levels (the high blood lactate group [> 2 mmol/L] and normal blood lactate group), and conducted a retrospective comparison of the following items between the two groups: (1) the creatinine generation rate (%CGR) and the geriatric nutrition risk index (GNRI) as indices of the nutritional status; (2) the left ventricular ejection fraction (LVEF) and E/A, an indicator of diastolic function; (3) the ankle-brachial index (ABI) and transcutaneous partial pressure of oxygen as indices of the adequacy of circulation in the peripheral blood vessels of the lower extremities; (4) the white blood cell count and serum level of C-reactive protein (CRP) before dialysis as markers of an inflammatory state. The mean age and serum CRP level were significantly higher in the high blood lactate group than in the normal blood lactate group. There were no significant differences in the markers of the nutritional status, cardiac function, or adequacy of circulation in the peripheral blood vessels of the lower extremities between the two groups. Advanced age and a state of chronic inflammation appear to be associated with elevated blood lactate levels in patients undergoing chronic maintenance hemodialysis.
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Affiliation(s)
- Kazuyoshi Hori
- Department of Life and Environmental Sciences, Teikyo University of Science, 2-2-1 Senjyusakuragi, Adachiku, Tokyo, 120-0045, Japan.
| | - Yasutaka Uchida
- Department of Life and Environmental Sciences, Teikyo University of Science, 2-2-1 Senjyusakuragi, Adachiku, Tokyo, 120-0045, Japan
| | - Kenichi Kokubo
- Kitasato University School of Allied Health Sciences, 1-15-1 Kitasato Sagamihara Minamiku, Kanagawa, 252-0373, Japan
| | - Naoya Matsuzawa
- Department of Clinical Engineering, Katori Omigawa Medical Center, 438-1, Minamiharachishinden, Katori City, Chiba, 289-0332, Japan
| | - Anna Kamegamori
- Department of Clinical Engineering, Katori Omigawa Medical Center, 438-1, Minamiharachishinden, Katori City, Chiba, 289-0332, Japan
| | - Tomoya Iizuka
- Department of Clinical Engineering, Katori Omigawa Medical Center, 438-1, Minamiharachishinden, Katori City, Chiba, 289-0332, Japan
| | - Yusuke Saito
- Department of Clinical Engineering, Katori Omigawa Medical Center, 438-1, Minamiharachishinden, Katori City, Chiba, 289-0332, Japan
| | - Kenji Shiota
- Department of Clinical Engineering, Katori Omigawa Medical Center, 438-1, Minamiharachishinden, Katori City, Chiba, 289-0332, Japan
| | - Satoshi Kidooka
- Department of Clinical Engineering, Katori Omigawa Medical Center, 438-1, Minamiharachishinden, Katori City, Chiba, 289-0332, Japan
| | - Masahiro Inoue
- Department of Medicine, Katori Omigawa Medical Center, 438-1, Minamiharachisinden Katori City, Chiba, 289-0332, Japan
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15
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Romero M, Miller K, Gelsomini A, Garcia D, Li K, Suresh D, Frasca D. Immunometabolic effects of lactate on B cell function in healthy individuals of different ages. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.08.07.23293760. [PMID: 37609164 PMCID: PMC10441492 DOI: 10.1101/2023.08.07.23293760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Aging is characterized by chronic systemic inflammation and metabolic changes. When we compared B cells from young and elderly donors, we found that aging induces higher oxygen consumption rates, and especially higher extracellular acidification rates, measures of oxidative phosphorylation and of anaerobic glycolysis, respectively. Importantly, this higher metabolic status, which reflects the age-associated expansion of pro-inflammatory B cell subsets, was found associated with higher secretion of lactate and autoimmune antibodies after in vitro stimulation. B cells from elderly individuals, induce in vitro generation of pro-inflammatory CD4+ T cells from young individuals through metabolic pathways mediated by lactate secretion. Lactate also induces immunosenescent B cells that are glycolytic and express transcripts for multiple pro-inflammatory molecules. These results altogether may have relevant clinical implications and suggest novel targets for therapeutic interventions in patients with inflammatory conditions and diseases.
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16
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Muniz-Santos R, Lucieri-Costa G, de Almeida MAP, Moraes-de-Souza I, Brito MADSM, Silva AR, Gonçalves-de-Albuquerque CF. Lipid oxidation dysregulation: an emerging player in the pathophysiology of sepsis. Front Immunol 2023; 14:1224335. [PMID: 37600769 PMCID: PMC10435884 DOI: 10.3389/fimmu.2023.1224335] [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: 05/17/2023] [Accepted: 06/30/2023] [Indexed: 08/22/2023] Open
Abstract
Sepsis is a life-threatening organ dysfunction caused by abnormal host response to infection. Millions of people are affected annually worldwide. Derangement of the inflammatory response is crucial in sepsis pathogenesis. However, metabolic, coagulation, and thermoregulatory alterations also occur in patients with sepsis. Fatty acid mobilization and oxidation changes may assume the role of a protagonist in sepsis pathogenesis. Lipid oxidation and free fatty acids (FFAs) are potentially valuable markers for sepsis diagnosis and prognosis. Herein, we discuss inflammatory and metabolic dysfunction during sepsis, focusing on fatty acid oxidation (FAO) alterations in the liver and muscle (skeletal and cardiac) and their implications in sepsis development.
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Affiliation(s)
- Renan Muniz-Santos
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Giovanna Lucieri-Costa
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Matheus Augusto P. de Almeida
- Neuroscience Graduate Program, Federal Fluminense University, Niteroi, Brazil
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Isabelle Moraes-de-Souza
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Adriana Ribeiro Silva
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Cassiano Felippe Gonçalves-de-Albuquerque
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
- Neuroscience Graduate Program, Federal Fluminense University, Niteroi, Brazil
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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17
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Tao H, Zhong X, Zeng A, Song L. Unveiling the veil of lactate in tumor-associated macrophages: a successful strategy for immunometabolic therapy. Front Immunol 2023; 14:1208870. [PMID: 37564659 PMCID: PMC10411982 DOI: 10.3389/fimmu.2023.1208870] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/12/2023] [Indexed: 08/12/2023] Open
Abstract
Lactate, traditionally regarded as a metabolic waste product at the terminal of the glycolysis process, has recently been found to have multifaceted functional roles in metabolism and beyond. A metabolic reprogramming phenomenon commonly seen in tumor cells, known as the "Warburg effect," sees high levels of aerobic glycolysis result in an excessive production of lactate. This lactate serves as a substrate that sustains not only the survival of cancer cells but also immune cells. However, it also inhibits the function of tumor-associated macrophages (TAMs), a group of innate immune cells ubiquitously present in solid tumors, thereby facilitating the immune evasion of malignant tumor cells. Characterized by their high plasticity, TAMs are generally divided into the pro-inflammatory M1 phenotype and the pro-tumour M2 phenotype. Through a process of 'education' by lactate, TAMs tend to adopt an immunosuppressive phenotype and collaborate with tumor cells to promote angiogenesis. Additionally, there is growing evidence linking metabolic reprogramming with epigenetic modifications, suggesting the participation of histone modification in diverse cellular events within the tumor microenvironment (TME). In this review, we delve into recent discoveries concerning lactate metabolism in tumors, with a particular focus on the impact of lactate on the function of TAMs. We aim to consolidate the molecular mechanisms underlying lactate-induced TAM polarization and angiogenesis and explore the lactate-mediated crosstalk between TAMs and tumor cells. Finally, we also touch upon the latest progress in immunometabolic therapies and drug delivery strategies targeting glycolysis and lactate production, offering new perspectives for future therapeutic approaches.
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Affiliation(s)
- Hongxia Tao
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Xuansheng Zhong
- Clinical Medicine Department, Bengbu Medical College, Bengbu, China
| | - Anqi Zeng
- Institute of Translational Pharmacology and Clinical Application, Sichuan Academy of Chinese Medical Science, Chengdu, Sichuan, China
| | - Linjiang Song
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
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18
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Dou X, Chen R, Yang J, Dai M, Long J, Sun S, Lin Y. The potential role of T-cell metabolism-related molecules in chronic neuropathic pain after nerve injury: a narrative review. Front Immunol 2023; 14:1107298. [PMID: 37266437 PMCID: PMC10229812 DOI: 10.3389/fimmu.2023.1107298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 04/27/2023] [Indexed: 06/03/2023] Open
Abstract
Neuropathic pain is a common type of chronic pain, primarily caused by peripheral nerve injury. Different T-cell subtypes play various roles in neuropathic pain caused by peripheral nerve damage. Peripheral nerve damage can lead to co-infiltration of neurons and other inflammatory cells, thereby altering the cellular microenvironment and affecting cellular metabolism. By elaborating on the above, we first relate chronic pain to T-cell energy metabolism. Then we summarize the molecules that have affected T-cell energy metabolism in the past five years and divide them into two categories. The first category could play a role in neuropathic pain, and we explain their roles in T-cell function and chronic pain, respectively. The second category has not yet been involved in neuropathic pain, and we focus on how they affect T-cell function by influencing T-cell metabolism. By discussing the above content, this review provides a reference for studying the direct relationship between chronic pain and T-cell metabolism and searching for potential therapeutic targets for the treatment of chronic pain on the level of T-cell energy metabolism.
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Affiliation(s)
- Xiaoke Dou
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rui Chen
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Juexi Yang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Maosha Dai
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junhao Long
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shujun Sun
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Pain, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yun Lin
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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19
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Hylén U, Särndahl E, Bejerot S, Humble MB, Hyötyläinen T, Salihovic S, Eklund D. Alterations in inflammasome-related immunometabolites in individuals with severe psychiatric disorders. BMC Psychiatry 2023; 23:268. [PMID: 37076825 PMCID: PMC10114326 DOI: 10.1186/s12888-023-04784-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 04/13/2023] [Indexed: 04/21/2023] Open
Abstract
INTRODUCTION Psychiatric disorders are common and significantly impact the quality of life. Inflammatory processes are proposed to contribute to the emergence of psychiatric disorders. In addition to inflammation, disturbances in metabolic pathways have been observed in individuals with different psychiatric disorders. A suggested key player in the interaction between inflammation and metabolism is the Nod-like receptor 3 (NLRP3) inflammasome, and NLRP3 is known to react to a number of specific metabolites. However, little is known about the interplay between these immunometabolites and the NLRP3 inflammasome in mental health disorders. AIM To assess the interplay between immunometabolites and inflammasome function in a transdiagnostic cohort of individuals with severe mental disorders. METHODS Mass spectrometry-based analysis of selected immunometabolites, previously known to affect inflammasome function, were performed in plasma from low-functioning individuals with severe mental disorders (n = 39) and sex and aged-matched healthy controls (n = 39) using a transdiagnostic approach. Mann Whitney U test was used to test differences in immunometabolites between psychiatric patients and controls. To assess the relationship between inflammasome parameters, disease severity, and the immunometabolites, Spearman's rank-order correlation test was used. Conditional logistic regression was used to control for potential confounding variables. Principal component analysis was performed to explore immunometabolic patterns. RESULTS Among the selected immunometabolites (n = 9), serine, glutamine, and lactic acid were significantly higher in the patient group compared to the controls. After adjusting for confounders, the differences remained significant for all three immunometabolites. No significant correlations were found between immunometabolites and disease severity. CONCLUSION Previous research on metabolic changes in mental disorders has not been conclusive. This study shows that severely ill patients have common metabolic perturbations. The changes in serine, glutamine, and lactic acid could constitute a direct contribution to the low-grade inflammation observed in severe psychiatric disorders.
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Affiliation(s)
- Ulrika Hylén
- University Health Care Research Center, Örebro University, Örebro, Sweden.
- Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
- Inflammatory Response and Infection Susceptibility Centre, (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
| | - Eva Särndahl
- Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Inflammatory Response and Infection Susceptibility Centre, (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Susanne Bejerot
- University Health Care Research Center, Örebro University, Örebro, Sweden
- Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Mats B Humble
- Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Tuulia Hyötyläinen
- Man-Technology-Environment Research Center, School of Science and Technology, Örebro University, Örebro, Sweden
| | - Samira Salihovic
- Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Inflammatory Response and Infection Susceptibility Centre, (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Man-Technology-Environment Research Center, School of Science and Technology, Örebro University, Örebro, Sweden
| | - Daniel Eklund
- Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Inflammatory Response and Infection Susceptibility Centre, (iRiSC), Faculty of Medicine and Health, Örebro University, Örebro, Sweden
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20
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Maduka CV, Alhaj M, Ural E, Kuhnert MM, Habeeb OM, Schilmiller AL, Hankenson KD, Goodman SB, Narayan R, Contag CH. Stereochemistry Determines Immune Cellular Responses to Polylactide Implants. ACS Biomater Sci Eng 2023; 9:932-943. [PMID: 36634351 DOI: 10.1021/acsbiomaterials.2c01279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Repeating l- and d-chiral configurations determine polylactide (PLA) stereochemistry, which affects its thermal and physicochemical properties, including degradation profiles. Clinically, degradation of implanted PLA biomaterials promotes prolonged inflammation and excessive fibrosis, but the role of PLA stereochemistry is unclear. Additionally, although PLA of varied stereochemistries causes differential immune responses in vivo, this observation has yet to be effectively modeled in vitro. A bioenergetic model was applied to study immune cellular responses to PLA containing >99% l-lactide (PLLA), >99% d-lactide (PDLA), and a 50/50 melt-blend of PLLA and PDLA (stereocomplex PLA). Stereocomplex PLA breakdown products increased IL-1β, TNF-α, and IL-6 protein levels but not MCP-1. Expression of these proinflammatory cytokines is mechanistically driven by increases in glycolysis in primary macrophages. In contrast, PLLA and PDLA degradation products selectively increase MCP-1 protein expression. Although both oxidative phosphorylation and glycolysis are increased with PDLA, only oxidative phosphorylation is increased with PLLA. For each biomaterial, glycolytic inhibition reduces proinflammatory cytokines and markedly increases anti-inflammatory (IL-10) protein levels; differential metabolic changes in fibroblasts were observed. These findings provide mechanistic explanations for the diverse immune responses to PLA of different stereochemistries and underscore the pivotal role of immunometabolism in the biocompatibility of biomaterials applied in medicine.
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Affiliation(s)
- Chima V Maduka
- Comparative Medicine & Integrative Biology, Michigan State University, East Lansing, Michigan 48824, United States.,Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, United States.,Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States
| | - Mohammed Alhaj
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, Michigan 48824, United States
| | - Evran Ural
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, United States.,Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States
| | - Maxwell M Kuhnert
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, United States.,Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States
| | - Oluwatosin M Habeeb
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, United States.,Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States
| | - Anthony L Schilmiller
- Mass Spectrometry and Metabolomics Core, Michigan State University, East Lansing, Michigan 48824, United States
| | - Kurt D Hankenson
- Department of Orthopedic Surgery, University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
| | - Stuart B Goodman
- Department of Orthopedic Surgery, Stanford University, Stanford, California 94063, United States.,Department of Bioengineering, Stanford University, Stanford, California 94305, United States
| | - Ramani Narayan
- Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, Michigan 48824, United States
| | - Christopher H Contag
- Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, United States.,Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States.,Department of Microbiology & Molecular Genetics, Michigan State University, East Lansing, Michigan 48864, United States
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21
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Dai Q, Zhang H, Tang S, Wu X, Wang J, Yi B, Liu J, Li Z, Liao Q, Li A, Liu Y, Zhang W. Vitamin D- VDR (vitamin D receptor) alleviates glucose metabolism reprogramming in lipopolysaccharide-induced acute kidney injury. Front Physiol 2023; 14:1083643. [PMID: 36909229 PMCID: PMC9998528 DOI: 10.3389/fphys.2023.1083643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 02/13/2023] [Indexed: 03/14/2023] Open
Abstract
Background: Our previous study showed that vitamin D (VD)-vitamin D receptor (VDR) plays a nephroprotective role in lipopolysaccharide (LPS)-induced acute kidney injury (AKI). Recently, glucose metabolism reprogramming was reported to be involved in the pathogenesis of AKI. Objective: To investigate the role of VD-VDR in glucose metabolism reprogramming in LPS-induced AKI. Methods: We established a model of LPS-induced AKI in VDR knockout (VDR-KO) mice, renal proximal tubular-specific VDR-overexpressing (VDR-OE) mice and wild-type C57BL/6 mice. In vitro, human proximal tubular epithelial cells (HK-2 cells), VDR knockout and VDR overexpression HK-2 cell lines were used. Results: Paricalcitol (an active vitamin D analog) or VDR-OE reduced lactate concentration, hexokinase activity and PDHA1 phosphorylation (a key step in inhibiting aerobic oxidation) and simultaneously ameliorated renal inflammation, apoptosis and kidney injury in LPS-induced AKI mice, which were more severe in VDR-KO mice. In in vitro experiments, glucose metabolism reprogramming, inflammation and apoptosis induced by LPS were alleviated by treatment with paricalcitol or dichloroacetate (DCA, an inhibitor of p-PDHA1). Moreover, paricalcitol activated the phosphorylation of AMP-activated protein kinase (AMPK), and an AMPK inhibitor partially abolished the protective effect of paricalcitol in LPS-treated HK-2 cells. Conclusion: VD-VDR alleviated LPS-induced metabolic reprogramming in the kidneys of AKI mice, which may be attributed to the inactivation of PDHA1 phosphorylation via the AMPK pathway.
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Affiliation(s)
- Qing Dai
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Hao Zhang
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Shiqi Tang
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Xueqin Wu
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Jianwen Wang
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Bin Yi
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Jishi Liu
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhi Li
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Qin Liao
- Department of Anesthesiology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Aimei Li
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Yan Liu
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
| | - Wei Zhang
- Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, China
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22
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Ye L, Jiang Y, Zhang M. Crosstalk between glucose metabolism, lactate production and immune response modulation. Cytokine Growth Factor Rev 2022; 68:81-92. [PMID: 36376165 DOI: 10.1016/j.cytogfr.2022.11.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022]
Abstract
Metabolites of glycolytic metabolism have been identified as signaling molecules and regulators of gene expression, in addition to their basic function as major energy and biosynthetic source. Immune cells reprogram metabolic pathways to cater to energy and biosynthesis demands upon activation. Most lymphocytes, including inflammatory M1 macrophages, mainly shift from oxidative phosphorylation to glycolysis, whereas regulatory T cells and M2 macrophages preferentially use the tricarboxylic acid (TCA) cycle and have reduced glycolysis. Recent studies have revealed the "non-metabolic" signaling functions of intermediates of the mitochondrial pathway and glycolysis. The roles of citrate, succinate and itaconate in immune response, including post-translational modifications of proteins and macrophages activation, have been highlighted. As an end product of glycolysis, lactate has received considerable interest from researchers. In this review, we specifically focused on studies exploring the integration of lactate into immune cell biology and associated pathologies. Lactate can act as a double-edged sword. On one hand, activated immune cells prefer to use lactate to support their function. On the other hand, accumulated lactate in the tissue microenvironment acts as a signaling molecule that restricts immune cell function. Recently, a novel epigenetic change mediated by histone lysine lactylation has been proposed. The burgeoning researches support the idea that histone lactylation participates in diverse cellular events. This review describes glycolytic metabolism, including the immunoregulation of metabolites of the TCA cycle and lactate. These latest findings strengthen our understanding on tumor and chronic inflammatory diseases and offer potential therapeutic options.
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Affiliation(s)
- Lei Ye
- Department of Gastroenterology and Hepatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Disease, State Key Laboratory for Oncogenes and Related Genes, NHC Key Laboratory of Digestive Diseases, Shanghai 200001, China
| | - Yi Jiang
- Department of Gastroenterology and Hepatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Disease, State Key Laboratory for Oncogenes and Related Genes, NHC Key Laboratory of Digestive Diseases, Shanghai 200001, China
| | - Mingming Zhang
- Department of Gastroenterology and Hepatology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Disease, State Key Laboratory for Oncogenes and Related Genes, NHC Key Laboratory of Digestive Diseases, Shanghai 200001, China; Department of Gastroenterology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing University, Nanjing 210093, China.
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23
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Huang Q, Zheng XM, Zhang ML, Ning P, Wu MJ. Lactation mastitis: Promising alternative indicators for early diagnosis. World J Clin Cases 2022; 10:11252-11259. [PMID: 36387788 PMCID: PMC9649554 DOI: 10.12998/wjcc.v10.i31.11252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/31/2022] [Accepted: 09/22/2022] [Indexed: 02/05/2023] Open
Abstract
Although lactation mastitis (LM) has been extensively researched, the incidence rate of LM remains a salient clinical problem. To reduce this incidence rate and achieve a better prognosis, early and specific quantitative indicators are particularly important. It has been found that milk electrolyte concentrations (chloride, potassium, and sodium) and electrical conductivity (EC) significantly change in the early stages of LM in an animal model. Several studies have evaluated EC for the detection of subclinical mastitis in cows. EC, chloride, and sodium content of milk were more accurate for predicting infection status than were other variables. In the early stages of LM, lactic sodium, chloride, and EC increase, but potassium decreases. However, these indicators have not been reported in the diagnosis of LM in humans. This review summarizes the pathogenesis and the mechanism of LM in terms of milk electrolyte concentration and EC, and aim to provide new ideas for the detection of sub-clinical mastitis in humans.
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Affiliation(s)
- Qian Huang
- School of Medicine, University of Electronic Science and Technology of China, Chengdu 610000, Sichuan Province, China
| | - Xue-Mei Zheng
- School of Medicine, University of Electronic Science and Technology of China, Chengdu 610000, Sichuan Province, China
| | - Mao-Lin Zhang
- Department of Anesthesiology, Chongqing Medical University, Chongqing 400016, Sichuan Province, China
| | - Ping Ning
- Department of Breast, Chengdu Women's and Children's Central Hospital, Chengdu 610000, Sichuan Province, China
| | - Meng-Jun Wu
- Department of Anesthesiology, Chengdu Women's and Children's Central Hospital, Chengdu 610000, Sichuan Province, China
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24
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Hu H, Guo L, Overholser J, Wang X. Mitochondrial VDAC1: A Potential Therapeutic Target of Inflammation-Related Diseases and Clinical Opportunities. Cells 2022; 11:cells11193174. [PMID: 36231136 PMCID: PMC9562648 DOI: 10.3390/cells11193174] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/27/2022] [Accepted: 09/30/2022] [Indexed: 12/03/2022] Open
Abstract
The multifunctional protein, voltage-dependent anion channel 1 (VDAC1), is located on the mitochondrial outer membrane. It is a pivotal protein that maintains mitochondrial function to power cellular bioactivities via energy generation. VDAC1 is involved in regulating energy production, mitochondrial oxidase stress, Ca2+ transportation, substance metabolism, apoptosis, mitochondrial autophagy (mitophagy), and many other functions. VDAC1 malfunction is associated with mitochondrial disorders that affect inflammatory responses, resulting in an up-regulation of the body’s defensive response to stress stimulation. Overresponses to inflammation may cause chronic diseases. Mitochondrial DNA (mtDNA) acts as a danger signal that can further trigger native immune system activities after its secretion. VDAC1 mediates the release of mtDNA into the cytoplasm to enhance cytokine levels by activating immune responses. VDAC1 regulates mitochondrial Ca2+ transportation, lipid metabolism and mitophagy, which are involved in inflammation-related disease pathogenesis. Many scientists have suggested approaches to deal with inflammation overresponse issues via specific targeting therapies. Due to the broad functionality of VDAC1, it may become a useful target for therapy in inflammation-related diseases. The mechanisms of VDAC1 and its role in inflammation require further exploration. We comprehensively and systematically summarized the role of VDAC1 in the inflammatory response, and hope that our research will lead to novel therapeutic strategies that target VDAC1 in order to treat inflammation-related disorders.
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Affiliation(s)
- Hang Hu
- Inflammation & Allergic Diseases Research Unit, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Linlin Guo
- Department of Obstetrics and Gynecology, The Ohio State University Wexner Medical Center at The Ohio State University, Columbus, OH 43210, USA
- Correspondence: (L.G.); (X.W.)
| | - Jay Overholser
- Department of Obstetrics and Gynecology, The Ohio State University Wexner Medical Center at The Ohio State University, Columbus, OH 43210, USA
| | - Xing Wang
- Inflammation & Allergic Diseases Research Unit, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Correspondence: (L.G.); (X.W.)
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25
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Certo M, Llibre A, Lee W, Mauro C. Understanding lactate sensing and signalling. Trends Endocrinol Metab 2022; 33:722-735. [PMID: 35999109 DOI: 10.1016/j.tem.2022.07.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/14/2022] [Accepted: 07/22/2022] [Indexed: 12/26/2022]
Abstract
Metabolites generated from cellular and tissue metabolism have been rediscovered in recent years as signalling molecules. They may act as cofactor of enzymes or be linked to proteins as post-translational modifiers. They also act as ligands for specific receptors, highlighting that their neglected functions have, in fact, a long standing in evolution. Lactate is one such metabolite that has been considered for long time a waste product of metabolism devoid of any biological function. However, in the past 10 years, lactate has gained much attention in several physio-pathological processes. Mechanisms of sensing and signalling have been discovered and implicated in a broad range of diseases, from cancer to inflammation and fibrosis, providing opportunities for novel therapeutic avenues. Here, we review some of the most recently discovered mechanisms of lactate sensing and signalling.
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Affiliation(s)
- Michelangelo Certo
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Alba Llibre
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | | | - Claudio Mauro
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK.
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26
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Feng T, Zhao X, Gu P, Yang W, Wang C, Guo Q, Long Q, Liu Q, Cheng Y, Li J, Cheung CKY, Wu D, Kong X, Xu Y, Ye D, Hua S, Loomes K, Xu A, Hui X. Adipocyte-derived lactate is a signalling metabolite that potentiates adipose macrophage inflammation via targeting PHD2. Nat Commun 2022; 13:5208. [PMID: 36064857 PMCID: PMC9445001 DOI: 10.1038/s41467-022-32871-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 08/22/2022] [Indexed: 11/09/2022] Open
Abstract
Adipose tissue macrophage (ATM) inflammation is involved with meta-inflammation and pathology of metabolic complications. Here we report that in adipocytes, elevated lactate production, previously regarded as the waste product of glycolysis, serves as a danger signal to promote ATM polarization to an inflammatory state in the context of obesity. Adipocyte-selective deletion of lactate dehydrogenase A (Ldha), the enzyme converting pyruvate to lactate, protects mice from obesity-associated glucose intolerance and insulin resistance, accompanied by a lower percentage of inflammatory ATM and reduced production of pro-inflammatory cytokines such as interleukin 1β (IL-1β). Mechanistically, lactate, at its physiological concentration, fosters the activation of inflammatory macrophages by directly binding to the catalytic domain of prolyl hydroxylase domain-containing 2 (PHD2) in a competitive manner with α-ketoglutarate and stabilizes hypoxia inducible factor (HIF-1α). Lactate-induced IL-1β was abolished in PHD2-deficient macrophages. Human adipose lactate level is positively linked with local inflammatory features and insulin resistance index independent of the body mass index (BMI). Our study shows a critical function of adipocyte-derived lactate in promoting the pro-inflammatory microenvironment in adipose and identifies PHD2 as a direct sensor of lactate, which functions to connect chronic inflammation and energy metabolism.
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Affiliation(s)
- Tianshi Feng
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China.,Department of Medicine, The University of Hong Kong, Hong Kong, China
| | - Xuemei Zhao
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Ping Gu
- Department of Endocrinology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Wah Yang
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China.,Department of Medicine, The University of Hong Kong, Hong Kong, China.,The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Cunchuan Wang
- The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Qingyu Guo
- Department of Endocrinology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Qiaoyun Long
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Qing Liu
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China.,Department of Medicine, The University of Hong Kong, Hong Kong, China.,School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Ying Cheng
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China.,Department of Medicine, The University of Hong Kong, Hong Kong, China
| | - Jin Li
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China.,Department of Medicine, The University of Hong Kong, Hong Kong, China
| | - Cynthia Kwan Yui Cheung
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China.,Department of Medicine, The University of Hong Kong, Hong Kong, China
| | - Donghai Wu
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,China-New Zealand Joint Laboratory on Biomedicine and Health, Guangzhou, China
| | - Xinyu Kong
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,China-New Zealand Joint Laboratory on Biomedicine and Health, Guangzhou, China
| | - Yong Xu
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,China-New Zealand Joint Laboratory on Biomedicine and Health, Guangzhou, China
| | - Dewei Ye
- Guangdong Pharmaceutical University, Guangzhou, China
| | - Shuang Hua
- Guangdong Pharmaceutical University, Guangzhou, China
| | - Kerry Loomes
- School of Biological Sciences and Maurice Wilkins Centre, University of Auckland, Auckland, New Zealand
| | - Aimin Xu
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China. .,Department of Medicine, The University of Hong Kong, Hong Kong, China. .,Department of Pharmacy and Pharmacology, The University of Hong Kong, Hong Kong, China.
| | - Xiaoyan Hui
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China. .,Department of Medicine, The University of Hong Kong, Hong Kong, China. .,School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China.
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27
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Li X, Yang Y, Zhang B, Lin X, Fu X, An Y, Zou Y, Wang JX, Wang Z, Yu T. Lactate metabolism in human health and disease. Signal Transduct Target Ther 2022; 7:305. [PMID: 36050306 PMCID: PMC9434547 DOI: 10.1038/s41392-022-01151-3] [Citation(s) in RCA: 251] [Impact Index Per Article: 125.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 07/17/2022] [Accepted: 08/09/2022] [Indexed: 12/29/2022] Open
Abstract
The current understanding of lactate extends from its origins as a byproduct of glycolysis to its role in tumor metabolism, as identified by studies on the Warburg effect. The lactate shuttle hypothesis suggests that lactate plays an important role as a bridging signaling molecule that coordinates signaling among different cells, organs and tissues. Lactylation is a posttranslational modification initially reported by Professor Yingming Zhao’s research group in 2019. Subsequent studies confirmed that lactylation is a vital component of lactate function and is involved in tumor proliferation, neural excitation, inflammation and other biological processes. An indispensable substance for various physiological cellular functions, lactate plays a regulatory role in different aspects of energy metabolism and signal transduction. Therefore, a comprehensive review and summary of lactate is presented to clarify the role of lactate in disease and to provide a reference and direction for future research. This review offers a systematic overview of lactate homeostasis and its roles in physiological and pathological processes, as well as a comprehensive overview of the effects of lactylation in various diseases, particularly inflammation and cancer.
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Affiliation(s)
- Xiaolu Li
- Center for Regenerative Medicine, Institute for Translational Medicine, The Affiliated Hospital of Qingdao University; Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao, 266000, China
| | - Yanyan Yang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Bei Zhang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Xiaotong Lin
- Department of Respiratory Medicine, Qingdao Municipal Hospital, Qingdao, 266011, China
| | - Xiuxiu Fu
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao, 266000, China
| | - Yi An
- Department of Cardiology, The Affiliated Hospital of Qingdao University, No. 1677 Wutaishan Road, Qingdao, 266555, China
| | - Yulin Zou
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao, 266000, China
| | - Jian-Xun Wang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Zhibin Wang
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao, 266000, China.
| | - Tao Yu
- Center for Regenerative Medicine, Institute for Translational Medicine, The Affiliated Hospital of Qingdao University; Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, No. 16 Jiangsu Road, Qingdao, 266000, China.
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28
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Lactic Acid Regulation: A Potential Therapeutic Option in Rheumatoid Arthritis. J Immunol Res 2022; 2022:2280973. [PMID: 36061305 PMCID: PMC9433259 DOI: 10.1155/2022/2280973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/16/2022] [Indexed: 11/29/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic, persistent autoimmune disease that causes severe joint tissue damage and irreversible disability. Cumulative evidence suggests that patients suffering from RA for long durations are at risk of functional damage to cardiovascular, kidney, lung, and other tissues. This seriously affects the quality of work and life of patients. To date, no clear etiology of RA has been found. Recent studies have revealed that the massive proliferation of synoviocytes and immune cells requires a large amount of energy supply. Rapid energy supply depends on the anaerobic glucose metabolic pathway in both RA animal models and clinical patients. Anaerobic glycolysis can increase intracellular lactic acid (LA) content. LA induces the overexpression of monocarboxylate transporters (MCTs) in cell membranes. MCTs rapidly transport LA from the intracellular to the intercellular or articular cavity. Hence, a relatively high accumulation of LA could be formed in the intercellular and articular cavities of inflammatory joints. Moreover, LA contributes to the migration and activation of immune cells. Immune cells proliferate and secrete interleukins (IL) including IL-1, IL-2, IL-13, IL-17, and other inflammatory factors. These inflammatory factors enhance the immune inflammatory response of the body and aggravate the condition of RA patients. In this paper, the effects of LA on RA pathogenesis will be summarized from the perspective of the production, transport, and metabolism of synoviocytes and immune cells. Additionally, the drugs involved in the production, transport, and metabolism of LA are highlighted.
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29
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Tanaka M, Miyamoto Y, Sasa K, Yoshimura K, Yamada A, Shirota T, Kamijo R. Low oxygen tension suppresses the death of chondrocyte-like ATDC5 cells induced by interleukin-1ß. In Vitro Cell Dev Biol Anim 2022; 58:521-528. [PMID: 35925448 DOI: 10.1007/s11626-022-00680-z] [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: 03/01/2022] [Accepted: 03/21/2022] [Indexed: 11/05/2022]
Abstract
The articular cartilage is an avascular tissue, and oxygen tensions in its superficial and deeper zones are estimated to be 6% and 1%. Degeneration of the articular cartilage begins from the surface zone in osteoarthritis. We previously reported that monocarboxylate transporter-1, a transmembrane transporter for monocarboxylates, played an essential role in the interleukin-1β-induced expression of NADPH oxidase-2, a reactive oxygen species-producing enzyme, and reactive oxygen species-dependent death of mouse chondrogenic ATDC5 cells cultured in a normal condition (20% oxygen). Here, we investigated the effect of oxygen tension on interleukin-1β-induced events described above in ATDC5 cells. Interleukin-1β induced the death of ATDC5 cells under 20% and 6% oxygen but did not under 2% and 1% oxygen. Interleukin-1β induced Mct1 (monocarboxylate transporter-1 gene) and Nox2 (NADPH oxidase-2 gene) mRNAs' expression under 20% oxygen in 24 h, respectively, but not under 2% oxygen. On the other hand, a 24-h incubation with interleukin-1β upregulated the expression of Nos2 (inducible nitric oxide synthase gene) mRNA irrespective of oxygen tension. Furthermore, inhibition of I-κB kinase suppressed the interleukin-1β-induced expression of Mct1 mRNA in the cells cultured under 20% and 2% oxygen, indicating NF-κB plays an essential role in the induction of the Mct1 gene expression. The results suggest that interleukin-1β induces monocarboxylate transporter-1 in an oxygen tension-dependent manner required for cell death in ATDC5 cells. These results might explain some part of the degenerative process of the articular cartilage, which begins from its superficial zone in the pathogenesis of osteoarthritis.
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Affiliation(s)
- Motohiro Tanaka
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, 142-8555, Japan
- Department of Oral and Maxillofacial Surgery, Show University School of Dentistry, Tokyo, 142-8555, Japan
| | - Yoichi Miyamoto
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, 142-8555, Japan.
| | - Kiyohito Sasa
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, 142-8555, Japan
| | - Kentaro Yoshimura
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, 142-8555, Japan
| | - Atsushi Yamada
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, 142-8555, Japan
| | - Tatsuo Shirota
- Department of Oral and Maxillofacial Surgery, Show University School of Dentistry, Tokyo, 142-8555, Japan
| | - Ryutaro Kamijo
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, 142-8555, Japan
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30
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Kong E, Li Y, Deng M, Hua T, Yang M, Li J, Feng X, Yuan H. Glycometabolism Reprogramming of Glial Cells in Central Nervous System: Novel Target for Neuropathic Pain. Front Immunol 2022; 13:861290. [PMID: 35669777 PMCID: PMC9163495 DOI: 10.3389/fimmu.2022.861290] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 04/26/2022] [Indexed: 11/13/2022] Open
Abstract
Neuropathic pain is characterized by hyperalgesia and allodynia. Inflammatory response is conducive to tissue recovery upon nerve injury, but persistent and exaggerated inflammation is detrimental and participates in neuropathic pain. Synaptic transmission in the nociceptive pathway, and particularly the balance between facilitation and inhibition, could be affected by inflammation, which in turn is regulated by glial cells. Importantly, glycometabolism exerts a vital role in the inflammatory process. Glycometabolism reprogramming of inflammatory cells in neuropathic pain is characterized by impaired oxidative phosphorylation in mitochondria and enhanced glycolysis. These changes induce phenotypic transition of inflammatory cells to promote neural inflammation and oxidative stress in peripheral and central nervous system. Accumulation of lactate in synaptic microenvironment also contributes to synaptic remodeling and central sensitization. Previous studies mainly focused on the glycometabolism reprogramming in peripheral inflammatory cells such as macrophage or lymphocyte, little attention was paid to the regulation effects of glycometabolism reprogramming on the inflammatory responses in glial cells. This review summarizes the evidences for glycometabolism reprogramming in peripheral inflammatory cells, and presents a small quantity of present studies on glycometabolism in glial cells, expecting to promote the exploration in glycometabolism in glial cells of neuropathic pain.
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Affiliation(s)
- Erliang Kong
- Department of Anesthesiology, Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, China.,Department of Anesthesiology, The No. 988 Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Zhengzhou, China
| | - Yongchang Li
- Department of Anesthesiology, Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Mengqiu Deng
- Department of Anesthesiology, Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Tong Hua
- Department of Anesthesiology, Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Mei Yang
- Department of Anesthesiology, Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Jian Li
- Department of Anesthesiology, Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Xudong Feng
- Department of Anesthesiology, The No. 988 Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Zhengzhou, China
| | - Hongbin Yuan
- Department of Anesthesiology, Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, China
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31
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Systematic Investigations on the Metabolic and Transcriptomic Regulation of Lactate in the Human Colon Epithelial Cells. Int J Mol Sci 2022; 23:ijms23116262. [PMID: 35682941 PMCID: PMC9181574 DOI: 10.3390/ijms23116262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/19/2022] [Accepted: 05/31/2022] [Indexed: 02/04/2023] Open
Abstract
Lactate, primarily produced by the gut microbiota, performs as a necessary “information transmission carrier” between the gut and the microbiota. To investigate the role of lactate in the gut epithelium cell–microbiota interactions as a metabolic signal, we performed a combinatory, global, and unbiased analysis of metabolomic and transcriptional profiling in human colon epithelial cells (Caco-2), using a lactate treatment at the physiological concentration (8 mM). The data demonstrated that most of the genes in oxidative phosphorylation were significantly downregulated in the Caco-2 cells due to lactate treatment. Consistently, the levels of fumarate, adenosine triphosphate (ATP), and creatine significantly decreased, and these are the metabolic markers of OXPHOS inhibition by mitochondria dysfunction. The one-carbon metabolism was affected and the polyol pathway was activated at the levels of gene expression and metabolic alternation. In addition, lactate significantly upregulated the expressions of genes related to self-protection against apoptosis. In conclusion, lactate participates in gut–gut microbiota communications by remodeling the metabolomic and transcriptional signatures, especially for the regulation of mitochondrial function. This work contributes comprehensive information to disclose the molecular mechanisms of lactate-mediated functions in human colon epithelial cells that can help us understand how the microbiota communicates with the intestines through the signaling molecule, lactate.
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32
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The Pyruvate Dehydrogenase Complex Mitigates LPS-Induced Endothelial Barrier Dysfunction by Metabolic Regulation. Shock 2022; 57:308-317. [PMID: 35759309 DOI: 10.1097/shk.0000000000001931] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
ABSTRACT Sepsis is a fatal health issue induced by an aberrant host response to infection, and it correlates with organ damage and a high mortality rate. Endothelial barrier dysfunction and subsequent capillary leakage play major roles in sepsis-induced multiorgan dysfunction. Anaerobic glycolysis is the primary metabolic mode in sepsis and the pyruvate dehydrogenase complex (PDHC) serves as a critical hub in energy regulation. Therefore, it is important to understand the role of PDHC in metabolic regulation during the development of sepsis-induced endothelial barrier dysfunction.In present study, human umbilical vein endothelial cells (HUVECs) and C57 BL/6 mice were treated with lipopolysaccharide (LPS) as models of endotoxemia. LPS increased basal glycolysis, compensatory glycolysis, and lactate secretion, indicating increased glycolysis level in endothelial cells (ECs). Activation of PDHC with dichloroacetate (DCA) reversed LPS-induced glycolysis, allowing PDHC to remain in the active dephosphorylated state, thereby preventing lactic acid production and HUVECs monolayers barrier dysfunction, as assessed by transendothelial electrical resistance and Fluorescein Isothiocyanate-labeled dextran. The in vivo study also showed that the lactate level and vascular permeability were increased in LPS-treated mice, but pretreatment with DCA attenuated these increases. The LPS-treated HUVEC model showed that DCA reversed LPS-induced phosphorylation of pyruvate dehydrogenase E1α Ser293 and Ser300 to restore PDHC activity. Immunoprecipitation results showed that LPS treatment increased the acetylation level of PDH E1α in HUVECs.Our study suggested that activation of PDHC may represent a therapeutic target for treatment of LPS-induced endothelial barrier dysfunction.
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Zhang CS, Zhang B, Li M, Wei X, Gong K, Li Z, Yao X, Wu J, Zhang C, Zhu M, Zhang L, Sun X, Zhan YH, Jiang Z, Zhao W, Zhong W, Zhuang X, Zhou D, Piao HL, Lin SC, Wang Z. Identification of serum metabolites enhancing inflammatory responses in COVID-19. SCIENCE CHINA LIFE SCIENCES 2022; 65:1971-1984. [PMID: 35508791 PMCID: PMC9068507 DOI: 10.1007/s11427-021-2099-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/22/2022] [Indexed: 12/15/2022]
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is characterized by a strong production of inflammatory cytokines such as TNF and IL-6, which underlie the severity of the disease. However, the molecular mechanisms responsible for such a strong immune response remains unclear. Here, utilizing targeted tandem mass spectrometry to analyze serum metabolome and lipidome in COVID-19 patients at different temporal stages, we identified that 611 metabolites (of 1,039) were significantly altered in COVID-19 patients. Among them, two metabolites, agmatine and putrescine, were prominently elevated in the serum of patients; and 2-quinolinecarboxylate was changed in a biphasic manner, elevated during early COVID-19 infection but levelled off. When tested in mouse embryonic fibroblasts (MEFs) and macrophages, these 3 metabolites were found to activate the NF-κB pathway that plays a pivotal role in governing cytokine production. Importantly, these metabolites were each able to cause strong increase of TNF and IL-6 levels when administered to wildtype mice, but not in the mice lacking NF-κB. Intriguingly, these metabolites have little effects on the activation of interferon regulatory factors (IRFs) for the production of type I interferons (IFNs) for antiviral defenses. These data suggest that circulating metabolites resulting from COVID-19 infection may act as effectors to elicit the peculiar systemic inflammatory responses, exhibiting severely strong proinflammatory cytokine production with limited induction of the interferons. Our study may provide a rationale for development of drugs to alleviate inflammation in COVID-19 patients.
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Affiliation(s)
- Chen-Song Zhang
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Bingchang Zhang
- Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, the First Affiliated Hospital of Xiamen University, Xiamen, 361102, China
| | - Mengqi Li
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Xiaoyan Wei
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Kai Gong
- Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, the First Affiliated Hospital of Xiamen University, Xiamen, 361102, China
| | - Zhiyong Li
- Department of Laboratory Medicine, The First Affiliated Hospital of Xiamen University, Xiamen, 361102, China
| | - Xiangyang Yao
- Department of pulmonary diseases, The First Affiliated Hospital of Xiamen University, Xiamen, 361102, China
| | - Jianfeng Wu
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Cixiong Zhang
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Mingxia Zhu
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Lei Zhang
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Xiufeng Sun
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Yi-Hong Zhan
- Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, the First Affiliated Hospital of Xiamen University, Xiamen, 361102, China
| | - Zhengye Jiang
- School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Wenpeng Zhao
- School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Wei Zhong
- School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Xinguo Zhuang
- Department of Laboratory Medicine, The First Affiliated Hospital of Xiamen University, Xiamen, 361102, China
- School of Medicine, Xiamen University, Xiamen, 361102, China
| | - Dawang Zhou
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Hai-Long Piao
- Scientific Research Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Sheng-Cai Lin
- State Key Laboratory for Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, 361102, China.
| | - Zhanxiang Wang
- Department of Neurosurgery, Xiamen Key Laboratory of Brain Center, the First Affiliated Hospital of Xiamen University, Xiamen, 361102, China.
- Institute of Neurosurgery, School of Medicine, Xiamen University, Xiamen, 361102, China.
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34
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HCAR1-Mediated l-Lactate Signaling Suppresses Microglial Phagocytosis. Neuromolecular Med 2022; 24:399-404. [DOI: 10.1007/s12017-022-08710-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/28/2022] [Indexed: 10/18/2022]
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35
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Li H, Yang YG, Sun T. Nanoparticle-Based Drug Delivery Systems for Induction of Tolerance and Treatment of Autoimmune Diseases. Front Bioeng Biotechnol 2022; 10:889291. [PMID: 35464732 PMCID: PMC9019755 DOI: 10.3389/fbioe.2022.889291] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 03/10/2022] [Indexed: 11/13/2022] Open
Abstract
Autoimmune disease is a chronic inflammatory disease caused by disorders of immune regulation. Antigen-specific immunotherapy has the potential to inhibit the autoreactivity of inflammatory T cells and induce antigen-specific immune suppression without impairing normal immune function, offering an ideal strategy for autoimmune disease treatment. Tolerogenic dendritic cells (Tol DCs) with immunoregulatory functions play important roles in inducing immune tolerance. However, the effective generation of tolerogenic DCs in vivo remains a great challenge. The application of nanoparticle-based drug delivery systems in autoimmune disease treatment can increase the efficiency of inducing antigen-specific tolerance in vivo. In this review, we discuss multiple nanoparticles, with a focus on their potential in treatment of autoimmune diseases. We also discuss how the physical properties of nanoparticles influence their therapeutic efficacy.
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Affiliation(s)
- He Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, China
- Department of Rehabilitation Medicine, The First Hospital, Jilin University, Changchun, China
| | - Yong-Guang Yang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
| | - Tianmeng Sun
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
- *Correspondence: Tianmeng Sun,
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36
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High fructose diet: A risk factor for immune system dysregulation. Hum Immunol 2022; 83:538-546. [DOI: 10.1016/j.humimm.2022.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/05/2022] [Accepted: 03/19/2022] [Indexed: 12/15/2022]
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37
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Engineering T cells to survive and thrive in the hostile tumor microenvironment. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2022. [DOI: 10.1016/j.cobme.2021.100360] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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38
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Manosalva C, Quiroga J, Hidalgo AI, Alarcón P, Anseoleaga N, Hidalgo MA, Burgos RA. Role of Lactate in Inflammatory Processes: Friend or Foe. Front Immunol 2022; 12:808799. [PMID: 35095895 PMCID: PMC8795514 DOI: 10.3389/fimmu.2021.808799] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/23/2021] [Indexed: 12/13/2022] Open
Abstract
During an inflammatory process, shift in the cellular metabolism associated with an increase in extracellular acidification are well-known features. This pH drop in the inflamed tissue is largely attributed to the presence of lactate by an increase in glycolysis. In recent years, evidence has accumulated describing the role of lactate in inflammatory processes; however, there are differences as to whether lactate can currently be considered a pro- or anti-inflammatory mediator. Herein, we review these recent advances on the pleiotropic effects of lactate on the inflammatory process. Taken together, the evidence suggests that lactate could exert differential effects depending on the metabolic status, cell type in which the effects of lactate are studied, and the pathological process analyzed. Additionally, various targets, including post-translational modifications, G-protein coupled receptor and transcription factor activation such as NF-κB and HIF-1, allow lactate to modulate signaling pathways that control the expression of cytokines, chemokines, adhesion molecules, and several enzymes associated with immune response and metabolism. Altogether, this would explain its varied effects on inflammatory processes beyond its well-known role as a waste product of metabolism.
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Affiliation(s)
- Carolina Manosalva
- Faculty of Sciences, Institute of Pharmacy, Universidad Austral de Chile, Valdivia, Chile
| | - John Quiroga
- Laboratory of Immunometabolism, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile.,Graduate School, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Alejandra I Hidalgo
- Laboratory of Immunometabolism, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Pablo Alarcón
- Laboratory of Immunometabolism, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Nicolás Anseoleaga
- Laboratory of Immunometabolism, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile.,Graduate School, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - María Angélica Hidalgo
- Laboratory of Immunometabolism, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Rafael Agustín Burgos
- Laboratory of Immunometabolism, Faculty of Veterinary Sciences, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
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39
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Boyer S, Lee HJ, Steele N, Zhang L, Sajjakulnukit P, Andren A, Ward MH, Singh R, Basrur V, Zhang Y, Nesvizhskii AI, Pasca di Magliano M, Halbrook CJ, Lyssiotis CA. Multiomic characterization of pancreatic cancer-associated macrophage polarization reveals deregulated metabolic programs driven by the GM-CSF-PI3K pathway. eLife 2022; 11:e73796. [PMID: 35156921 PMCID: PMC8843093 DOI: 10.7554/elife.73796] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 01/31/2022] [Indexed: 12/12/2022] Open
Abstract
The pancreatic ductal adenocarcinoma microenvironment is composed of a variety of cell types and marked by extensive fibrosis and inflammation. Tumor-associated macrophages (TAMs) are abundant, and they are important mediators of disease progression and invasion. TAMs are polarized in situ to a tumor promoting and immunosuppressive phenotype via cytokine signaling and metabolic crosstalk from malignant epithelial cells and other components of the tumor microenvironment. However, the specific distinguishing features and functions of TAMs remain poorly defined. Here, we generated tumor-educated macrophages (TEMs) in vitro and performed detailed, multiomic characterization (i.e., transcriptomics, proteomics, metabolomics). Our results reveal unique genetic and metabolic signatures of TEMs, the veracity of which were queried against our in-house single-cell RNA sequencing dataset of human pancreatic tumors. This analysis identified expression of novel, metabolic TEM markers in human pancreatic TAMs, including ARG1, ACLY, and TXNIP. We then utilized our TEM model system to study the role of mutant Kras signaling in cancer cells on TEM polarization. This revealed an important role for granulocyte-macrophage colony-stimulating factor (GM-CSF) and lactate on TEM polarization, molecules released from cancer cells in a mutant Kras-dependent manner. Lastly, we demonstrate that GM-CSF dysregulates TEM gene expression and metabolism through PI3K-AKT pathway signaling. Collectively, our results define new markers and programs to classify pancreatic TAMs, how these are engaged by cancer cells, and the precise signaling pathways mediating polarization.
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Affiliation(s)
- Seth Boyer
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Ho-Joon Lee
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Nina Steele
- Department of Cell and Developmental Biology, University of MichiganAnn ArborUnited States
- Department of Surgery, University of MichiganAnn ArborUnited States
| | - Li Zhang
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Peter Sajjakulnukit
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Anthony Andren
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Matthew H Ward
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Rima Singh
- Department of Molecular Biology and Biochemistry, University of California, IrvineIrvineUnited States
| | - Venkatesha Basrur
- Department of Pathology, University of MichiganAnn ArborUnited States
| | - Yaqing Zhang
- Department of Surgery, University of MichiganAnn ArborUnited States
| | - Alexey I Nesvizhskii
- Department of Pathology, University of MichiganAnn ArborUnited States
- Department of Computational Medicine and Bioinformatics, University of MichiganAnn ArborUnited States
| | - Marina Pasca di Magliano
- Department of Surgery, University of MichiganAnn ArborUnited States
- Rogel Cancer Center, University of MichiganAnn ArborUnited States
| | - Christopher J Halbrook
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Costas A Lyssiotis
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
- Rogel Cancer Center, University of MichiganAnn ArborUnited States
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of MichiganAnn ArborUnited States
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40
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Das M, Ajit K, Mate N, Roy R, Haldar C, Gupta L, Banerjee A. Lactate-Dependent Cross-Talk Between Astrocyte and GnRH-I Neurons in Hypothalamus of Aged Brain: Decreased GnRH-I Transcription. Reprod Sci 2022; 29:2546-2564. [PMID: 35138586 DOI: 10.1007/s43032-021-00814-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/25/2021] [Indexed: 11/29/2022]
Abstract
GnRH-I produced by hypothalamic neurosecretory cells is considered a master regulator of mammalian reproduction. Although GnRH-I transcription is well studied, the effect of ageing on transcriptional regulation of GnRH-I has not yet been explored. Here, we elucidate the effects of ageing on the metabolic environment like lactate level and TNF-α and how these affect GnRH-I transcription. Using pathway analysis of transcriptomic data, we found that lactate is upregulated in ageing astrocytes due to the downregulation of cellular respiration pathways possibly resulting in greater pyruvate concentration for lactate production. This lactate could then be shuttled into neurons where it would affect GnRH-I transcription. We showed that supra-physiological level of lactate in young mouse brain can mimic metabolic disturbances in the old brain and cause downregulation in GnRH-I transcription at a young age. In particular, we found upregulation of GnRH-I repressors in the young brain treated with high levels of lactate similar to old brain. Hence, this confirmed that aged metabolic environment can affect GnRH-I transcription even in the young brain. Further downstream analysis using the TRUST database showed NF-Kb signalling which lies downstream of both lactate and TNF-α as being capable of upregulating GnRH-I repressors. Since NF-Kb signalling has been shown in our study as well as others to be induced by TNF-α during ageing, it is likely that GnRH-I transcriptional regulation is mediated through these pathways. Thus, we formed a model for explaining the downregulation of GnRH-I transcription during ageing through differential expression of its TFs in an aged metabolic environment.
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Affiliation(s)
- Moitreyi Das
- Department of Zoology, Goa University, Taleigao Plateau, Goa, India.
| | - Kamal Ajit
- Department of Biological Sciences, KK Birla, BITS Pilani, Goa Campus, Zuarinagar, Goa, India
| | - Nayan Mate
- Department of Biological Sciences, KK Birla, BITS Pilani, Goa Campus, Zuarinagar, Goa, India
| | - Ramaballav Roy
- Department of Zoology, Goa University, Taleigao Plateau, Goa, India
| | | | - Lalita Gupta
- Department of Zoology, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Arnab Banerjee
- Department of Biological Sciences, KK Birla, BITS Pilani, Goa Campus, Zuarinagar, Goa, India.
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41
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Alber J, Föller M. Lactic acid induces fibroblast growth factor 23 (FGF23) production in UMR106 osteoblast-like cells. Mol Cell Biochem 2022; 477:363-370. [PMID: 34731356 PMCID: PMC8800909 DOI: 10.1007/s11010-021-04287-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 10/23/2021] [Indexed: 01/04/2023]
Abstract
Endocrine and paracrine fibroblast growth factor 23 (FGF23) is a protein predominantly produced by bone cells with strong impact on phosphate and vitamin D metabolism by targeting the kidney. Plasma FGF23 concentration early rises in kidney and cardiovascular diseases correlating with progression and outcome. Lactic acid is generated in anaerobic glycolysis. Lactic acidosis is the consequence of various physiological and pathological conditions and may be fatal. Since FGF23 production is stimulated by inflammation and lactic acid induces pro-inflammatory signaling, we investigated whether and how lactic acid influences FGF23. Experiments were performed in UMR106 osteoblast-like cells, Fgf23 mRNA levels estimated from quantitative real-time polymerase chain reaction, and FGF23 protein determined by enzyme-linked immunosorbent assay. Lactic acid dose-dependently induced Fgf23 gene expression and up-regulated FGF23 synthesis. Also, Na+-lactate as well as formic acid and acetic acid up-regulated Fgf23. The lactic acid effect was significantly attenuated by nuclear factor kappa-light-chain enhancer of activated B-cells (NFκB) inhibitors wogonin and withaferin A. Lactic acid induces FGF23 production, an effect at least in part mediated by NFκB. Lactic acidosis may, therefore, be paralleled by a surge in plasma FGF23.
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Affiliation(s)
- Jana Alber
- Department of Physiology, University of Hohenheim, Garbenstraße 30, 70599, Stuttgart, Germany
| | - Michael Föller
- Department of Physiology, University of Hohenheim, Garbenstraße 30, 70599, Stuttgart, Germany.
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Wu X, Ye J, Cai W, Yang X, Zou Q, Lin J, Zheng H, Wang C, Chen L, Li Y. LDHA mediated degradation of extracellular matrix is a potential target for the treatment of aortic dissection. Pharmacol Res 2022; 176:106051. [PMID: 34973467 DOI: 10.1016/j.phrs.2021.106051] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/11/2021] [Accepted: 12/28/2021] [Indexed: 11/26/2022]
Abstract
Aortic dissection (AD) is a disease with high mortality and lacks effective drug treatment. Recent studies have shown that the development of AD is closely related to glucose metabolism. Lactate dehydrogenase A (LDHA) is a key glycolytic enzyme and plays an important role in cardiovascular disease. However, the role of LDHA in the progression of AD remains to be elucidated. Here, we found that the level of LDHA was significantly elevated in AD patients and the mouse model established by BAPN combined with Ang II. In vitro, the knockdown of LDHA reduced the growth of human aortic vascular smooth muscle cells (HAVSMCs), glucose consumption, and lactate production induced by PDGF-BB. The overexpression of LDHA in HAVSMCs promoted the transformation of HAVSMCs from contractile phenotype to synthetic phenotype, and increased the expression of MMP2/9. Mechanistically, LDHA promoted MMP2/9 expression through the LDHA-NDRG3-ERK1/2-MMP2/9 pathway. In vivo, Oxamate, LDH and lactate inhibitor, reduced the degradation of elastic fibers and collagen deposition, inhibited the phenotypic transformation of HAVSMCs from contractile phenotype to synthetic phenotype, reduced the expression of NDRG3, p-ERK1/2, and MMP2/9, and delayed the progression of AD. To sum up, the increase of LDHA promotes the production of MMP2/9, stimulates the degradation of extracellular matrix (ECM), and promoted the transformation of HAVSMCs from contractile phenotype to synthetic phenotype. Oxamate reduced the progression of AD in mice. LDHA may be a therapeutic target for AD.
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Affiliation(s)
- Xiaohui Wu
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China; The School of Pharmacy, Fujian Medical University, Fuzhou, China; Fujian Center for Safety Evaluation of New Drug, Fujian Medical University, Fuzhou, China
| | - Jianqiang Ye
- The School of Pharmacy, Fujian Medical University, Fuzhou, China; Fujian Center for Safety Evaluation of New Drug, Fujian Medical University, Fuzhou, China
| | - Weixing Cai
- The School of Pharmacy, Fujian Medical University, Fuzhou, China; Fujian Center for Safety Evaluation of New Drug, Fujian Medical University, Fuzhou, China
| | - Xi Yang
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Provincial Special Reserve Talents Laboratory, Fuzhou, China
| | - Qiuying Zou
- The School of Pharmacy, Fujian Medical University, Fuzhou, China; Fujian Center for Safety Evaluation of New Drug, Fujian Medical University, Fuzhou, China
| | - Jingjing Lin
- The School of Pharmacy, Fujian Medical University, Fuzhou, China; Fujian Center for Safety Evaluation of New Drug, Fujian Medical University, Fuzhou, China
| | - Hui Zheng
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Provincial Special Reserve Talents Laboratory, Fuzhou, China; Key Laboratory of Cardio-Thoracic Surgery (Fujian Medical University), Fujian Province University, Fuzhou, China; Engineering Research Center of Tissue and Organ Regeneration, Fujian Province University, Fuzhou, China
| | - Chaoyun Wang
- The School of Pharmacy, Fujian Medical University, Fuzhou, China; Fujian Center for Safety Evaluation of New Drug, Fujian Medical University, Fuzhou, China
| | - Liangwan Chen
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Provincial Special Reserve Talents Laboratory, Fuzhou, China; Key Laboratory of Cardio-Thoracic Surgery (Fujian Medical University), Fujian Province University, Fuzhou, China; Engineering Research Center of Tissue and Organ Regeneration, Fujian Province University, Fuzhou, China.
| | - Yumei Li
- Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Provincial Special Reserve Talents Laboratory, Fuzhou, China; The School of Pharmacy, Fujian Medical University, Fuzhou, China; Fujian Center for Safety Evaluation of New Drug, Fujian Medical University, Fuzhou, China.
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Lui PPY, Yung PSH. Inflammatory mechanisms linking obesity and tendinopathy. J Orthop Translat 2022; 31:80-90. [PMID: 34976728 PMCID: PMC8666605 DOI: 10.1016/j.jot.2021.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/09/2021] [Accepted: 10/10/2021] [Indexed: 12/13/2022] Open
Abstract
Chronic tendinopathy is a debilitating tendon disorder with disappointing treatment outcomes. This review focuses on the potential roles of chronic low-grade inflammation in promoting tendinopathy in obesity. A systematic literature search was performed to identify all clinical studies supporting the actions of obesity-associated inflammatory mediators in the development of tendinopathy. The mechanisms of obesity-induced chronic inflammation in adipose tissue are firstly reviewed. Common inflammatory mediators potentially linking obesity and the development of tendinopathy, and their association with mechanical overuse, are discussed, along with pre-clinical evidences and a systematic literature search on clinical studies. The potential contribution of local adipose tissues in the promotion of inflammation, pain and tendon degeneration is then discussed. The future research directions are proposed. Translational potential statement Better understanding of the roles of obesity-associated inflammatory mediators on tendons will clarify the pathophysiological drivers of tendinopathy in patients with obesity and identify possible treatment targets. Further studies on the mechanisms of obesity-induced chronic inflammation on tendon are a promising direction for the treatment of tendinopathy.
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Affiliation(s)
- Pauline Po Yee Lui
- Corresponding author. Room 74037, 5/F, Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, China.
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Hu H, Mei J, Lin M, Wu X, Lin H, Chen G. The causal relationship between obesity and skin and soft tissue infections: A two-sample Mendelian randomization study. Front Endocrinol (Lausanne) 2022; 13:996863. [PMID: 36568121 PMCID: PMC9768473 DOI: 10.3389/fendo.2022.996863] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE Many observational studies have shown that obesity strongly affects skin and soft tissue infections (SSTIs). However, whether a causal genetic relationship exists between obesity and SSTIs is unclear. METHODS A two-sample Mendelian randomization (MR) study was used to explore whether obesity is causally associated with SSTIs using a publicly released genome-wide association study (GWAS). An inverse-variance weighted (IVW) analysis was used as the primary analysis, and the results are reported as the odds ratios (ORs). Heterogeneity was tested using Cochran's Q test and the I2 statistic, and horizontal pleiotropy was tested using the MR-Egger intercept and MR pleiotropy residual sum and outlier (MR-PRESSO). RESULTS The results of the MR analysis showed a positive effect of BMI on SSTIs (OR 1.544, 95% CI 1.399-1.704, P= 5.86 × 10-18). After adjusting for the effect of type 2 diabetes (T2D) and peripheral vascular disease (PVD), the positive effect still existed. Then, we further assessed the effect of BMI on different types of SSTIs. The results showed that BMI caused an increased risk of impetigo, cutaneous abscess, furuncle and carbuncle, cellulitis, pilonidal cyst, and other local infections of skin and subcutaneous tissues, except for acute lymphadenitis. However, the associations disappeared after adjusting for the effect of T2D and PVD, and the associations between BMI and impetigo or cellulitis disappeared. Finally, we assessed the effects of several obesity-related characteristics on SSTIs. Waist circumference, hip circumference, body fat percentage, and whole-body fat mass, excluding waist-to-hip ratio, had a causal effect on an increased risk of SSTIs. However, the associations disappeared after adjusting for the effect of BMI. CONCLUSION This study found that obesity had a positive causal effect on SSTIs. Reasonable weight control is a possible way to reduce the occurrence of SSTIs, especially in patients undergoing surgery.
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Affiliation(s)
- Hongxin Hu
- Department of Orthopedic Surgery, Affiliated Hospital of Putian University, Putian, China
| | - Jian Mei
- Department of Orthopaedic Surgery, Experimental Orthopaedics, Centre for Medical Biotechnology (ZMB/Biopark 1), University of Regensburg, Regensburg, Germany
| | - Mei Lin
- Department of Surgery, Affiliated Hospital of Putian University, Putian, China
| | - Xianwei Wu
- Department of Orthopedic Surgery, Affiliated Hospital of Putian University, Putian, China
| | - Haibin Lin
- Department of Orthopedic Surgery, Affiliated Hospital of Putian University, Putian, China
| | - Guoli Chen
- Department of Orthopedic Surgery, Affiliated Hospital of Putian University, Putian, China
- *Correspondence: Guoli Chen,
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45
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Zeng Z, Huang Q, Mao L, Wu J, An S, Chen Z, Zhang W. The Pyruvate Dehydrogenase Complex in Sepsis: Metabolic Regulation and Targeted Therapy. Front Nutr 2022; 8:783164. [PMID: 34970577 PMCID: PMC8712327 DOI: 10.3389/fnut.2021.783164] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 11/24/2021] [Indexed: 12/24/2022] Open
Abstract
Anaerobic glycolysis is the process by which glucose is broken down into pyruvate and lactate and is the primary metabolic pathway in sepsis. The pyruvate dehydrogenase complex (PDHC) is a multienzyme complex that serves as a critical hub in energy metabolism. Under aerobic conditions, pyruvate translocates to mitochondria, where it is oxidized into acetyl-CoA through the activation of PDHC, thereby accelerating aerobic oxidation. Both phosphorylation and acetylation affect PDHC activity and, consequently, the regulation of energy metabolism. The mechanisms underlying the protective effects of PDHC in sepsis involve the regulation on the balance of lactate, the release of inflammatory mediators, the remodeling of tricarboxylic acid (TCA) cycle, as well as on the improvement of lipid and energy metabolism. Therapeutic drugs that target PDHC activation for sepsis treatment include dichloroacetate, thiamine, amrinone, TNF-binding protein, and ciprofloxacin. In this review, we summarize the recent findings regarding the metabolic regulation of PDHC in sepsis and the therapies targeting PDHC for the treatment of this condition.
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Affiliation(s)
- Zhenhua Zeng
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qiaobing Huang
- Department of Pathophysiology, Guangdong Provincial Key Lab of Shock and Microcirculation, Southern Medical University, Guangzhou, China
| | - Liangfeng Mao
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jie Wu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Sheng An
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhongqing Chen
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Weijin Zhang
- Department of Internal Medicine General Ward, Shantou Central Hospital, Shantou, China
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46
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Ma D, Qin X, Zhong ZA, Liao H, Chen P, Zhang B. Systematic analysis of myocardial immune progression in septic cardiomyopathy: Immune-related mechanisms in septic cardiomyopathy. Front Cardiovasc Med 2022; 9:1036928. [PMID: 36911241 PMCID: PMC10002421 DOI: 10.3389/fcvm.2022.1036928] [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: 09/05/2022] [Accepted: 11/29/2022] [Indexed: 02/26/2023] Open
Abstract
Background The immune infiltration and molecular mechanisms underlying septic cardiomyopathy (SC) have not been completely elucidated. This study aimed to identify key genes related to SC and elucidate the potential molecular mechanisms. Methods The weighted correlation network analysis (WGCNA), linear models for microarray analysis (LIMMA), protein-protein interaction (PPI) network, CIBERSORT, Kyoto Encyclopedia of Genes and Genomes pathway (KEGG), and gene set enrichment analysis (GSEA) were applied to assess the key pathway and hub genes involved in SC. Results We identified 10 hub genes, namely, LRG1, LCN2, PTX3, E LANE, TCN1, CLEC4D, FPR2, MCEMP1, CEACAM8, and CD177. Furthermore, we used GSEA for all genes and online tools to explore the function of the hub genes. Finally, we took the intersection between differential expression genes (DEGs) and hub genes to identify LCN2 and PTX3 as key genes. We found that immune-related pathways played vital roles in SC. LCN2 and PTX3 were key genes in SC progression, which mainly showed an anti-inflammatory effect. The significant immune cells in cardiomyocytes of SC were neutrophils and M2 macrophages. Conclusion These cells may have the potential to be prognostic and therapeutic targets in the clinical management of SC. Excessive anti-inflammatory function and neutrophil infiltration are probably the primary causes of SC.
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Affiliation(s)
- Dunliang Ma
- Guangdong Provincial People's Hospital's Nanhai Hospital, The Second People's Hospital of Nanhai District, Foshan, China
| | - Xianyu Qin
- Department of Thoracic Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhi-An Zhong
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong People's Hospital, Guangzhou, China
| | - Hongtao Liao
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong People's Hospital, Guangzhou, China
| | - Pengyuan Chen
- Guangdong Provincial People's Hospital's Nanhai Hospital, The Second People's Hospital of Nanhai District, Foshan, China
| | - Bin Zhang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong People's Hospital, Guangzhou, China
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47
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Cheng J, Cai W, Zong S, Yu Y, Wei F. Metabolite transporters as regulators of macrophage polarization. Naunyn Schmiedebergs Arch Pharmacol 2021; 395:13-25. [PMID: 34851450 DOI: 10.1007/s00210-021-02173-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 10/27/2021] [Indexed: 12/20/2022]
Abstract
Macrophages are myeloid immune cells, present in virtually all tissues which exhibit considerable functional plasticity and diversity. Macrophages are often subdivided into two distinct subsets described as classically activated (M1) and alternatively activated (M2) macrophages. It has recently emerged that metabolites regulate the polarization and function of macrophages by altering metabolic pathways. These metabolites often cannot freely pass the cell membrane and are therefore transported by the corresponding metabolite transporters. Here, we reviewed how glucose, glutamate, lactate, fatty acid, and amino acid transporters are involved in the regulation of macrophage polarization. Understanding the interactions among metabolites, metabolite transporters, and macrophage function under physiological and pathological conditions may provide further insights for novel drug targets for the treatment of macrophage-associated diseases. In Brief Recent studies have shown that the polarization and function of macrophages are regulated by metabolites, most of which cannot pass freely through biofilms. Therefore, metabolite transporters required for the uptake of metabolites have emerged seen as important regulators of macrophage polarization and may represent novel drug targets for the treatment of macrophage-associated diseases. Here, we summarize the role of metabolite transporters as regulators of macrophage polarization.
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Affiliation(s)
- Jingwen Cheng
- School of Pharmacy, Bengbu Medical College, Donghai Avenue, Bengbu, 2600233030, Anhui, China
| | - Weiwei Cai
- School of Pharmacy, Bengbu Medical College, Donghai Avenue, Bengbu, 2600233030, Anhui, China
| | - Shiye Zong
- School of Pharmacy, Bengbu Medical College, Donghai Avenue, Bengbu, 2600233030, Anhui, China
| | - Yun Yu
- School of Pharmacy, Bengbu Medical College, Donghai Avenue, Bengbu, 2600233030, Anhui, China
| | - Fang Wei
- School of Pharmacy, Bengbu Medical College, Donghai Avenue, Bengbu, 2600233030, Anhui, China. .,Anhui Engineering Technology Research Center of Biochemical Pharmaceutical, 2600 Donghai Avenue, Bengbu, 233030, Anhui, China.
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48
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Caslin HL, Abebayehu D, Pinette JA, Ryan JJ. Lactate Is a Metabolic Mediator That Shapes Immune Cell Fate and Function. Front Physiol 2021; 12:688485. [PMID: 34733170 PMCID: PMC8558259 DOI: 10.3389/fphys.2021.688485] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 09/22/2021] [Indexed: 12/12/2022] Open
Abstract
Lactate and the associated H+ ions are still introduced in many biochemistry and general biology textbooks and courses as a metabolic by-product within fast or oxygen-independent glycolysis. However, the role of lactate as a fuel source has been well-appreciated in the field of physiology, and the role of lactate as a metabolic feedback regulator and distinct signaling molecule is beginning to gain traction in the field of immunology. We now know that while lactate and the associated H+ ions are generally immunosuppressive negative regulators, there are cell, receptor, mediator, and microenvironment-specific effects that augment T helper (Th)17, macrophage (M)2, tumor-associated macrophage, and neutrophil functions. Moreover, we are beginning to uncover how lactate and H+ utilize different transporters and signaling cascades in various immune cell types. These immunomodulatory effects may have a substantial impact in cancer, sepsis, autoimmunity, wound healing, and other immunomodulatory conditions with elevated lactate levels. In this article, we summarize the known effects of lactate and H+ on immune cells to hypothesize potential explanations for the divergent inflammatory vs. anti-inflammatory effects.
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Affiliation(s)
- Heather L Caslin
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, United States.,Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
| | - Daniel Abebayehu
- Department of Biology, Virginia Commonwealth University, Richmond, VA, United States.,Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Julia A Pinette
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, United States
| | - John J Ryan
- Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
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49
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van Meijel RLJ, Vogel MAA, Jocken JWE, Vliex LMM, Smeets JSJ, Hoebers N, Hoeks J, Essers Y, Schoffelen PFM, Sell H, Kersten S, M A Rouschop K, Blaak EE, Goossens GH. Mild intermittent hypoxia exposure induces metabolic and molecular adaptations in men with obesity. Mol Metab 2021; 53:101287. [PMID: 34224918 PMCID: PMC8355948 DOI: 10.1016/j.molmet.2021.101287] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/15/2021] [Accepted: 06/30/2021] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Recent studies suggest that hypoxia exposure may improve glucose homeostasis, but well-controlled human studies are lacking. We hypothesized that mild intermittent hypoxia (MIH) exposure decreases tissue oxygen partial pressure (pO2) and induces metabolic improvements in people who are overweight/obese. METHODS In a randomized, controlled, single-blind crossover study, 12 men who were overweight/obese were exposed to MIH (15 % O2, 3 × 2 h/day) or normoxia (21 % O2) for 7 consecutive days. Adipose tissue (AT) and skeletal muscle (SM) pO2, fasting/postprandial substrate metabolism, tissue-specific insulin sensitivity, SM oxidative capacity, and AT and SM gene/protein expression were determined. Furthermore, primary human myotubes and adipocytes were exposed to oxygen levels mimicking the hypoxic and normoxic AT and SM microenvironments. RESULTS MIH decreased systemic oxygen saturation (92.0 ± 0.5 % vs 97.1 ± 0.3, p < 0.001, respectively), AT pO2 (21.0 ± 2.3 vs 36.5 ± 1.5 mmHg, p < 0.001, respectively), and SM pO2 (9.5 ± 2.2 vs 15.4 ± 2.4 mmHg, p = 0.002, respectively) compared to normoxia. In addition, MIH increased glycolytic metabolism compared to normoxia, reflected by enhanced fasting and postprandial carbohydrate oxidation (pAUC = 0.002) and elevated plasma lactate concentrations (pAUC = 0.005). Mechanistically, hypoxia exposure increased insulin-independent glucose uptake compared to standard laboratory conditions (~50 %, p < 0.001) and physiological normoxia (~25 %, p = 0.019) through AMP-activated protein kinase in primary human myotubes but not in primary human adipocytes. MIH upregulated inflammatory/metabolic pathways and downregulated extracellular matrix-related pathways in AT but did not alter systemic inflammatory markers and SM oxidative capacity. MIH exposure did not induce significant alterations in AT (p = 0.120), hepatic (p = 0.132) and SM (p = 0.722) insulin sensitivity. CONCLUSIONS Our findings demonstrate for the first time that 7-day MIH reduces AT and SM pO2, evokes a shift toward glycolytic metabolism, and induces adaptations in AT and SM but does not induce alterations in tissue-specific insulin sensitivity in men who are overweight/obese. Future studies are needed to investigate further whether oxygen signaling is a promising target to mitigate metabolic complications in obesity. CLINICAL TRIAL REGISTRATION This study is registered at the Netherlands Trial Register (NL7120/NTR7325).
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Affiliation(s)
- Rens L J van Meijel
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Max A A Vogel
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Johan W E Jocken
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Lars M M Vliex
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Joey S J Smeets
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Nicole Hoebers
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Joris Hoeks
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Yvonne Essers
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Paul F M Schoffelen
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands; Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Henrike Sell
- Paul-Langerhans-Group for Integrative Physiology, German Diabetes Center, Dusseldorf, Germany
| | - Sander Kersten
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, the Netherlands
| | - Kasper M A Rouschop
- Maastricht Radiation Oncology (MaastRO) Laboratory, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Ellen E Blaak
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands
| | - Gijs H Goossens
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center(+), Maastricht, the Netherlands.
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50
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Piedrafita A, Balayssac S, Casemayou A, Saulnier-Blache JS, Lucas A, Iacovoni JS, Breuil B, Chauveau D, Decramer S, Malet-Martino M, Schanstra JP, Faguer S. Hepatocyte nuclear factor-1β shapes the energetic homeostasis of kidney tubule cells. FASEB J 2021; 35:e21931. [PMID: 34653285 DOI: 10.1096/fj.202100782rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 08/28/2021] [Accepted: 09/02/2021] [Indexed: 12/17/2022]
Abstract
Energetic metabolism controls key steps of kidney development, homeostasis, and epithelial repair following acute kidney injury (AKI). Hepatocyte nuclear factor-1β (HNF-1β) is a master transcription factor that controls mitochondrial function in proximal tubule (PT) cells. Patients with HNF1B pathogenic variant display a wide range of kidney developmental abnormalities and progressive kidney fibrosis. Characterizing the metabolic changes in PT cells with HNF-1β deficiency may help to identify new targetable molecular hubs involved in HNF1B-related kidney phenotypes and AKI. Here, we combined 1 H-NMR-based metabolomic analysis in a murine PT cell line with CrispR/Cas9-induced Hnf1b invalidation (Hnf1b-/- ), clustering analysis, targeted metabolic assays, and datamining of published RNA-seq and ChIP-seq dataset to identify the role of HNF-1β in metabolism. Hnf1b-/- cells grown in normoxic conditions display intracellular ATP depletion, increased cytosolic lactate concentration, increased lipid droplet content, failure to use pyruvate for energetic purposes, increased levels of tricarboxylic acid (TCA) cycle intermediates and oxidized glutathione, and a reduction of TCA cycle byproducts, all features consistent with mitochondrial dysfunction and an irreversible switch toward glycolysis. Unsupervised clustering analysis showed that Hnf1b-/- cells mimic a hypoxic signature and that they cannot furthermore increase glycolysis-dependent energetic supply during hypoxic challenge. Metabolome analysis also showed alteration of phospholipid biosynthesis in Hnf1b-/- cells leading to the identification of Chka, the gene coding for choline kinase α, as a new putative target of HNF-1β. HNF-1β shapes the energetic metabolism of PT cells and HNF1B deficiency in patients could lead to a hypoxia-like metabolic state precluding further adaptation to ATP depletion following AKI.
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Affiliation(s)
- Alexis Piedrafita
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France.,Université Paul Sabatier - Toulouse 3, Toulouse, France.,Département de Néphrologie et Transplantation d'Organes, Centre de Référence des Maladies Rénales Rares, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Stéphane Balayssac
- Groupe de RMN Biomédicale, Laboratoire SPCMIB, UMR CNRS 5068, Université Paul Sabatier, Centre National de la Recherche Scientifique, Toulouse, France.,Laboratoire des Interaction Moléculaires et Réactivité Chimique et Photochimique (IMRCP), UMR 5623, Toulouse, France
| | - Audrey Casemayou
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France.,Université Paul Sabatier - Toulouse 3, Toulouse, France.,Département de Néphrologie et Transplantation d'Organes, Centre de Référence des Maladies Rénales Rares, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Jean-Sébastien Saulnier-Blache
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France.,Université Paul Sabatier - Toulouse 3, Toulouse, France
| | - Alexandre Lucas
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France
| | - Jason S Iacovoni
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France
| | - Benjamin Breuil
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France
| | - Dominique Chauveau
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France.,Université Paul Sabatier - Toulouse 3, Toulouse, France.,Département de Néphrologie et Transplantation d'Organes, Centre de Référence des Maladies Rénales Rares, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Stéphane Decramer
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France.,Université Paul Sabatier - Toulouse 3, Toulouse, France.,Service de Néphrologie, Médecine interne et Hypertension artérielle, Hôpital des Enfants, Centre de Référence des Maladies Rénales Rares, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Myriam Malet-Martino
- Groupe de RMN Biomédicale, Laboratoire SPCMIB, UMR CNRS 5068, Université Paul Sabatier, Centre National de la Recherche Scientifique, Toulouse, France
| | - Joost P Schanstra
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France.,Université Paul Sabatier - Toulouse 3, Toulouse, France
| | - Stanislas Faguer
- Institut National de la Santé et de la Recherche Médicale, UMR 1297, Institut des Maladies Métaboliques et Cardiovasculaires, Hôpital Rangueil, Toulouse, France.,Université Paul Sabatier - Toulouse 3, Toulouse, France.,Département de Néphrologie et Transplantation d'Organes, Centre de Référence des Maladies Rénales Rares, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
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