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Hossain MA. Targeting the RAS upstream and downstream signaling pathway for cancer treatment. Eur J Pharmacol 2024; 979:176727. [PMID: 38866361 DOI: 10.1016/j.ejphar.2024.176727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 06/05/2024] [Accepted: 06/06/2024] [Indexed: 06/14/2024]
Abstract
Cancer often involves the overactivation of RAS/RAF/MEK/ERK (MAPK) and PI3K-Akt-mTOR pathways due to mutations in genes like RAS, RAF, PTEN, and PIK3CA. Various strategies are employed to address the overactivation of these pathways, among which targeted therapy emerges as a promising approach. Directly targeting specific proteins, leads to encouraging results in cancer treatment. For instance, RTK inhibitors such as imatinib and afatinib selectively target these receptors, hindering ligand binding and reducing signaling initiation. These inhibitors have shown potent efficacy against Non-Small Cell Lung Cancer. Other inhibitors, like lonafarnib targeting Farnesyltransferase and GGTI 2418 targeting geranylgeranyl Transferase, disrupt post-translational modifications of proteins. Additionally, inhibition of proteins like SOS, SH2 domain, and Ras demonstrate promising anti-tumor activity both in vivo and in vitro. Targeting downstream components with RAF inhibitors such as vemurafenib, dabrafenib, and sorafenib, along with MEK inhibitors like trametinib and binimetinib, has shown promising outcomes in treating cancers with BRAF-V600E mutations, including myeloma, colorectal, and thyroid cancers. Furthermore, inhibitors of PI3K (e.g., apitolisib, copanlisib), AKT (e.g., ipatasertib, perifosine), and mTOR (e.g., sirolimus, temsirolimus) exhibit promising efficacy against various cancers such as Invasive Breast Cancer, Lymphoma, Neoplasms, and Hematological malignancies. This review offers an overview of small molecule inhibitors targeting specific proteins within the RAS upstream and downstream signaling pathways in cancer.
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Affiliation(s)
- Md Arafat Hossain
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj, 8100, Bangladesh.
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2
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Zhang L, Wu M, Zhang J, Liu T, Fu S, Wang Y, Xu Z. The pivotal role of glucose transporter 1 in diabetic kidney disease. Life Sci 2024; 353:122932. [PMID: 39067659 DOI: 10.1016/j.lfs.2024.122932] [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: 04/05/2024] [Revised: 07/12/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024]
Abstract
Diabetes mellitus (DM) is a significant public health problem. Diabetic kidney disease (DKD) is the most common complication of DM, and its incidence has been increasing with the increasing prevalence of DM. Given the association between DKD and mortality in patients with DM, DKD is a significant burden on public health resources. Despite its significance in DM progression, the pathogenesis of DKD remains unclear. Aberrant glucose uptake by cells is an important pathophysiological mechanism underlying DKD renal injury. Glucose is transported across the bilayer cell membrane by a glucose transporter (GLUT) located on the cell membrane. Multiple GLUT proteins have been identified in the kidney, and GLUT1 is one of the most abundantly expressed isoforms. GLUT1 is a crucial regulator of intracellular glucose metabolism and plays a key pathological role in the phenotypic changes in DKD mesangial cells. In an attempt to understand the pathogenesis of DKD better, we here present a review of studies on the role of GLUT1 in the development and progression of DKD.
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Affiliation(s)
- Li Zhang
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Meiyan Wu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Jizhou Zhang
- Department of Biochemistry, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Tingting Liu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Shaojie Fu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Yue Wang
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China
| | - Zhonggao Xu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, 130021, China.
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3
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Zhu J, Guo J, Liu Z, Liu J, Yuan A, Chen H, Qiu J, Dou X, Lu D, Le Y. Salvianolic acid A attenuates non-alcoholic fatty liver disease by regulating the AMPK-IGFBP1 pathway. Chem Biol Interact 2024; 400:111162. [PMID: 39047806 DOI: 10.1016/j.cbi.2024.111162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 07/01/2024] [Accepted: 07/22/2024] [Indexed: 07/27/2024]
Abstract
Non-alcoholic fatty liver disease (NAFLD) affects approximately a quarter of the population and, to date, there is no approved drug therapy for this condition. Individuals with type 2 diabetes mellitus (T2DM) are at a significantly elevated risk of developing NAFLD, underscoring the urgency of identifying effective NAFLD treatments for T2DM patients. Salvianolic acid A (SAA) is a naturally occurring phenolic acid that is an important component of the water-soluble constituents isolated from the roots of Salvia miltiorrhiza Bunge. SAA has been demonstrated to possess anti-inflammatory and antioxidant stress properties. Nevertheless, its potential in ameliorating diabetes-associated NAFLD has not yet been fully elucidated. In this study, diabetic ApoE-/- mice were employed to establish a NAFLD model via a Western diet. Following this, they were treated with different doses of SAA (10 mg/kg, 20 mg/kg) via gavage. The study demonstrated a marked improvement in liver injury, lipid accumulation, inflammation, and the pro-fibrotic phenotype after the administration of SAA. Additionally, RNA-seq analysis indicated that the primary pathway by which SAA alleviates diabetes-induced NAFLD involves the cascade pathways of lipid metabolism. Furthermore, SAA was found to be effective in the inhibition of lipid accumulation, mitochondrial dysfunction and ferroptosis. A functional enrichment analysis of RNA-seq data revealed that SAA treatment modulates the AMPK pathway and IGFBP-1. Further experimental results demonstrated that SAA is capable of inhibiting lipid accumulation through the activation of the AMPK pathway and IGFBP-1.
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Affiliation(s)
- Ji Zhu
- The Third Affiliated Hospital of Zhejiang Chinese Medical University (Zhongshan Hospital of Zhejiang Province), Hangzhou, 330106, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Jianan Guo
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Zhijun Liu
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Jing Liu
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Aini Yuan
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Hang Chen
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Jiannan Qiu
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Xiaobing Dou
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Dezhao Lu
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Yifei Le
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China; Lipid Metabolism Institute (Molecular Medicine Institute), Zhejiang Chinese Medical University, Hangzhou, 310053, China.
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4
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Lee WS, Abel ED, Kim J. New Insights into IGF-1 Signaling in the Heart. Physiology (Bethesda) 2024; 39:0. [PMID: 38713091 DOI: 10.1152/physiol.00003.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/24/2024] [Accepted: 05/04/2024] [Indexed: 05/08/2024] Open
Abstract
Insulin-like growth factor-1 (IGF-1) signaling has multiple physiological roles in cellular growth, metabolism, and aging. Myocardial hypertrophy, cell death, senescence, fibrosis, and electrical remodeling are hallmarks of various heart diseases and contribute to the progression of heart failure. This review highlights the critical role of IGF-1 and its cognate receptor in cardiac hypertrophy, aging, and remodeling.
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Affiliation(s)
- Wang-Soo Lee
- Division of Cardiology, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - E Dale Abel
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States
| | - Jaetaek Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
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5
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Freeman P, Bellomo G, Ireland L, Abudula M, Luckett T, Oberst M, Stafferton R, Ghaneh P, Halloran C, Schmid MC, Mielgo A. Inhibition of insulin-like growth factors increases production of CXCL9/10 by macrophages and fibroblasts and facilitates CD8 + cytotoxic T cell recruitment to pancreatic tumours. Front Immunol 2024; 15:1382538. [PMID: 39165364 PMCID: PMC11334161 DOI: 10.3389/fimmu.2024.1382538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 07/10/2024] [Indexed: 08/22/2024] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a highly lethal malignancy with an urgent unmet clinical need for new therapies. Using a combination of in vitro assays and in vivo preclinical models we demonstrate that therapeutic inhibition of the IGF signalling axis promotes the accumulation of CD8+ cytotoxic T cells within the tumour microenvironment of PDAC tumours. Mechanistically, we show that IGF blockade promotes macrophage and fibroblast production of the chemokines CXCL9 and CXCL10 to facilitate CD8+ T cell recruitment and trafficking towards the PDAC tumour. Exploring this pathway further, we show that IGF inhibition leads to increased STAT1 transcriptional activity, correlating with a downregulation of the AKT/STAT3 signalling axis, in turn promoting Cxcl9 and Cxcl10 gene transcription. Using patient derived tumour explants, we also demonstrate that our findings translate into the human setting. PDAC tumours are frequently described as "immunologically cold", therefore bolstering CD8+ T cell recruitment to PDAC tumours through IGF inhibition may serve to improve the efficacy of immune checkpoint inhibitors which rely on the presence of CD8+ T cells in tumours.
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Affiliation(s)
- Patrick Freeman
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Gaia Bellomo
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Lucy Ireland
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Maidinaimu Abudula
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Teifion Luckett
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Michael Oberst
- Department of Oncology Research, AstraZeneca, One Medimmune Way, Gaithersburg, MD, United States
| | - Ruth Stafferton
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Paula Ghaneh
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Chris Halloran
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Michael C. Schmid
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Ainhoa Mielgo
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
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Önder T, Ateş Ö, Öner İ, Karaçin C. Triglyceride-Glucose Index: A Candidate Prognostic Marker in HR-Positive/HER2-Negative Metastatic Breast Cancer Patients Treated With CDK4/6 Inhibitors. Clin Breast Cancer 2024; 24:519-526. [PMID: 38879437 DOI: 10.1016/j.clbc.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 04/26/2024] [Accepted: 05/07/2024] [Indexed: 07/28/2024]
Abstract
AIMS AND OBJECTIVES Although cyclin-dependent kinase 4/6 inhibitors (CDK 4/6i) are a vital part of the treatment of hormone receptor (HR)-positive/HER-2-negative metastatic breast cancer (BC), individuals have different sensitivities to CDK4/6i, indicating the need for biomarkers. The fasting triglyceride glucose (TyG) index is an easily accessible surrogate marker of insulin resistance (IR). Herein, we investigated the prognostic significance of the fasting triglyceride glucose (TyG) index in HR+/HER2- metastatic BC patients treated with CDK4/6i plus endocrine therapy (ET). METHODS About 333 patients with HR+/HER2-metastatic BC treated with CDK4/6i plus ET were analyzed retrospectively. The TyG index was calculated within 3 months before the initiation of CDK4/6i plus ET. The median value of 8.43 was taken as the cutoff for the TyG index. RESULTS The median overall survival (OS) was 73.6 months (95% CI, 66.0-81.1) in the whole cohort. The progression-free survival (PFS) was significantly longer in the low-TyG subgroup than in the high-TyG subgroup (30.1 vs. 21.3 months, multivariate adjusted [HR] = 0.666, 95% CI, 0.450-0.987, P = .043). While the median OS was not reached in the low TyG subgroup, it was 69.0 months in the high TyG subgroup (multivariate-adjusted HR = 0.513, 95% CI, 0.281-0.936, P = .030). Although the ORR and DCR were numerically greater in the low-TyG subgroup, no significant differences were observed between the low-TyG subgroup and high-TyG subgroup (28.1% vs. 24.7%, P = .476; 83.2% vs. 80.1%, P = .463, respectively). CONCLUSIONS These data imply that the TyG index could be a predictive biomarker for the therapeutic efficacy of CDK4/6is. Extensive prospective studies are needed to confirm these findings.
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Affiliation(s)
- Tuğba Önder
- Health Sciences University, Dr Abdurrahman Yurtaslan Ankara Oncology Education and Research Hospital, Department of Medical Oncology, Yenimahalle Ankara, Turkey.
| | - Öztürk Ateş
- Health Sciences University, Dr Abdurrahman Yurtaslan Ankara Oncology Education and Research Hospital, Department of Medical Oncology, Yenimahalle Ankara, Turkey
| | - İrem Öner
- Health Sciences University, Dr Abdurrahman Yurtaslan Ankara Oncology Education and Research Hospital, Department of Medical Oncology, Yenimahalle Ankara, Turkey
| | - Cengiz Karaçin
- Health Sciences University, Dr Abdurrahman Yurtaslan Ankara Oncology Education and Research Hospital, Department of Medical Oncology, Yenimahalle Ankara, Turkey
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7
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Verma J, Vashisth H. Molecular basis for differential recognition of an allosteric inhibitor by receptor tyrosine kinases. Proteins 2024; 92:905-922. [PMID: 38506327 PMCID: PMC11222054 DOI: 10.1002/prot.26685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/08/2024] [Accepted: 03/06/2024] [Indexed: 03/21/2024]
Abstract
Understanding kinase-inhibitor selectivity continues to be a major objective in kinase drug discovery. We probe the molecular basis of selectivity of an allosteric inhibitor (MSC1609119A-1) of the insulin-like growth factor-I receptor kinase (IGF1RK), which has been shown to be ineffective for the homologous insulin receptor kinase (IRK). Specifically, we investigated the structural and energetic basis of the allosteric binding of this inhibitor to each kinase by combining molecular modeling, molecular dynamics (MD) simulations, and thermodynamic calculations. We predict the inhibitor conformation in the binding pocket of IRK and highlight that the charged residues in the histidine-arginine-aspartic acid (HRD) and aspartic acid-phenylalanine-glycine (DFG) motifs and the nonpolar residues in the binding pocket govern inhibitor interactions in the allosteric pocket of each kinase. We suggest that the conformational changes in the IGF1RK residues M1054 and M1079, movement of the ⍺C-helix, and the conformational stabilization of the DFG motif favor the selectivity of the inhibitor toward IGF1RK. Our thermodynamic calculations reveal that the observed selectivity can be rationalized through differences observed in the electrostatic interaction energy of the inhibitor in each inhibitor/kinase complex and the hydrogen bonding interactions of the inhibitor with the residue V1063 in IGF1RK that are not attained with the corresponding residue V1060 in IRK. Overall, our study provides a rationale for the molecular basis of recognition of this allosteric inhibitor by IGF1RK and IRK, which is potentially useful in developing novel inhibitors with improved affinity and selectivity.
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Affiliation(s)
- Jyoti Verma
- Department of Chemical Engineering and Bioengineering, University of New Hampshire, Durham, NH 03824
| | - Harish Vashisth
- Department of Chemical Engineering and Bioengineering, University of New Hampshire, Durham, NH 03824
- Department of Chemistry, University of New Hampshire, Durham, NH 03824
- Integrated Applied Mathematics Program, University of New Hampshire, Durham, NH 03824
- Molecular and Cellular Biotechnology Program, University of New Hampshire, Durham, NH 03824
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8
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Rhea EM, Leclerc M, Yassine HN, Capuano AW, Tong H, Petyuk VA, Macauley SL, Fioramonti X, Carmichael O, Calon F, Arvanitakis Z. State of the Science on Brain Insulin Resistance and Cognitive Decline Due to Alzheimer's Disease. Aging Dis 2024; 15:1688-1725. [PMID: 37611907 PMCID: PMC11272209 DOI: 10.14336/ad.2023.0814] [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: 06/02/2023] [Accepted: 08/14/2023] [Indexed: 08/25/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is common and increasing in prevalence worldwide, with devastating public health consequences. While peripheral insulin resistance is a key feature of most forms of T2DM and has been investigated for over a century, research on brain insulin resistance (BIR) has more recently been developed, including in the context of T2DM and non-diabetes states. Recent data support the presence of BIR in the aging brain, even in non-diabetes states, and found that BIR may be a feature in Alzheimer's disease (AD) and contributes to cognitive impairment. Further, therapies used to treat T2DM are now being investigated in the context of AD treatment and prevention, including insulin. In this review, we offer a definition of BIR, and present evidence for BIR in AD; we discuss the expression, function, and activation of the insulin receptor (INSR) in the brain; how BIR could develop; tools to study BIR; how BIR correlates with current AD hallmarks; and regional/cellular involvement of BIR. We close with a discussion on resilience to both BIR and AD, how current tools can be improved to better understand BIR, and future avenues for research. Overall, this review and position paper highlights BIR as a plausible therapeutic target for the prevention of cognitive decline and dementia due to AD.
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Affiliation(s)
- Elizabeth M Rhea
- Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA.
- Department of Medicine, Division of Gerontology and Geriatric Medicine, University of Washington, Seattle, WA 98195, USA.
| | - Manon Leclerc
- Faculty of Pharmacy, Laval University, Quebec, Quebec, Canada.
- Neuroscience Axis, CHU de Québec Research Center - Laval University, Quebec, Quebec, Canada.
| | - Hussein N Yassine
- Departments of Neurology and Medicine, University of Southern California, Los Angeles, CA 90033, USA.
| | - Ana W Capuano
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL 60612, USA.
| | - Han Tong
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL 60612, USA.
| | - Vladislav A Petyuk
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA.
| | - Shannon L Macauley
- Department of Physiology, University of Kentucky, Lexington, KY 40508, USA.
| | - Xavier Fioramonti
- International Associated Laboratory OptiNutriBrain, Bordeaux, France and Quebec, Canada.
- Univ. Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France.
| | - Owen Carmichael
- Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA.
| | - Frederic Calon
- Faculty of Pharmacy, Laval University, Quebec, Quebec, Canada.
- Neuroscience Axis, CHU de Québec Research Center - Laval University, Quebec, Quebec, Canada.
- International Associated Laboratory OptiNutriBrain, Bordeaux, France and Quebec, Canada.
| | - Zoe Arvanitakis
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL 60612, USA.
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Turvey S, Muench SP, Issad T, Fishwick CWG, Kearney MT, Simmons KJ. Using site-directed mutagenesis to further the understanding of insulin receptor-insulin like growth factor-1 receptor heterodimer structure. Growth Horm IGF Res 2024; 77:101607. [PMID: 39033666 DOI: 10.1016/j.ghir.2024.101607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 06/26/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
Type 2 diabetes is characterised by the disruption of insulin and insulin-like growth factor (IGF) signalling. The key hubs of these signalling cascades - the Insulin receptor (IR) and Insulin-like growth factor 1 receptor (IGF1R) - are known to form functional IR-IGF1R hybrid receptors which are insulin resistant. However, the mechanisms underpinning IR-IGF1R hybrid formation are not fully understood, hindering the ability to modulate this for future therapies targeting this receptor. To pinpoint suitable sites for intervention, computational hotspot prediction was utilised to identify promising epitopes for targeting with point mutagenesis. Specific IGF1R point mutations F450A, R391A and D555A show reduced affinity of the hybrid receptor in a BRET based donor-saturation assay, confirming hybrid formation could be modulated at this interface. These data provide the basis for rational design of more effective hybrid receptor modulators, supporting the prospect of identifying a small molecule that specifically interacts with this target.
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Affiliation(s)
- Samuel Turvey
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Stephen P Muench
- School of Biomedical Sciences, Faculty of Biological Sciences & Astbury Centre, University of Leeds, UK
| | - Tarik Issad
- Université Paris Cité, CNRS, INSERM, Institut Cochin, F-75014 Paris, France
| | | | - Mark T Kearney
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Katie J Simmons
- School of Biomedical Sciences, Faculty of Biological Sciences & Astbury Centre, University of Leeds, UK.
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10
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Abdullah G, Akpan A, Phelan MM, Wright HL. New insights into healthy ageing, inflammageing and frailty using metabolomics. FRONTIERS IN AGING 2024; 5:1426436. [PMID: 39044748 PMCID: PMC11263002 DOI: 10.3389/fragi.2024.1426436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Accepted: 06/24/2024] [Indexed: 07/25/2024]
Abstract
Human ageing is a normal process and does not necessarily result in the development of frailty. A mix of genetic, environmental, dietary, and lifestyle factors can have an impact on ageing, and whether an individual develops frailty. Frailty is defined as the loss of physiological reserve both at the physical and cellular levels, where systemic processes such as oxidative stress and inflammation contribute to physical decline. The newest "omics" technology and systems biology discipline, metabolomics, enables thorough characterisation of small-molecule metabolites in biological systems at a particular time and condition. In a biological system, metabolites-cellular intermediate products of metabolic reactions-reflect the system's final response to genomic, transcriptomic, proteomic, epigenetic, or environmental alterations. As a relatively newer technique to characterise metabolites and biomarkers in ageing and illness, metabolomics has gained popularity and has a wide range of applications. We will give a comprehensive summary of what is currently known about metabolomics in studies of ageing, with a focus on biomarkers for frailty. Metabolites related to amino acids, lipids, carbohydrates, and redox metabolism may function as biomarkers of ageing and/or frailty development, based on data obtained from human studies. However, there is a complexity that underpins biological ageing, due to both genetic and environmental factors that play a role in orchestrating the ageing process. Therefore, there is a critical need to identify pathways that contribute to functional decline in people with frailty.
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Affiliation(s)
- Genna Abdullah
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Asangaedem Akpan
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
- Division of Internal Medicine, University of Western Australia, Bunbury, WA, Australia
- Faculty of Health Sciences, Curtis University, Bunbury, WA, Australia
- Department of Geriatric Medicine, Bunbury Regional Hospital, Bunbury, WA, Australia
| | - Marie M. Phelan
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
- High Field NMR Facility, Liverpool Shared Research Facilities University of Liverpool, Liverpool, United Kingdom
| | - Helen L. Wright
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
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11
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Wang R, Liao Y, Deng Y, Shuang R. Unraveling the Health Benefits and Mechanisms of Time-Restricted Feeding: Beyond Caloric Restriction. Nutr Rev 2024:nuae074. [PMID: 38954563 DOI: 10.1093/nutrit/nuae074] [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: 07/04/2024] Open
Abstract
Time-restricted feeding (TRF) is a lifestyle intervention that aims to maintain a consistent daily cycle of feeding and fasting to support robust circadian rhythms. Recently, it has gained scientific, medical, and public attention due to its potential to enhance body composition, extend lifespan, and improve overall health, as well as induce autophagy and alleviate symptoms of diseases like cardiovascular diseases, type 2 diabetes, neurodegenerative diseases, cancer, and ischemic injury. However, there is still considerable debate on the primary factors that contribute to the health benefits of TRF. Despite not imposing strict limitations on calorie intake, TRF consistently led to reductions in calorie intake. Therefore, while some studies suggest that the health benefits of TRF are primarily due to caloric restriction (CR), others argue that the key advantages of TRF arise not only from CR but also from factors like the duration of fasting, the timing of the feeding period, and alignment with circadian rhythms. To elucidate the roles and mechanisms of TRF beyond CR, this review incorporates TRF studies that did not use CR, as well as TRF studies with equivalent energy intake to CR, which addresses the previous lack of comprehensive research on TRF without CR and provides a framework for future research directions.
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Affiliation(s)
- Ruhan Wang
- Department of Nutrition Hygiene and Toxicology, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 43000, China
| | - Yuxiao Liao
- Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 43000, China
| | - Yan Deng
- Department of Nutrition Hygiene and Toxicology, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 43000, China
| | - Rong Shuang
- Department of Nutrition Hygiene and Toxicology, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 43000, China
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12
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Messeha SS, Agarwal M, Gendy SG, Mehboob SB, Soliman KFA. The Anti-Obesogenic Effects of Muscadine Grapes through Ciliary Neurotrophic Factor Receptor (Cntfr) and Histamine Receptor H1 (Hrh1) Genes in 3T3-L1 Differentiated Mouse Cells. Nutrients 2024; 16:1817. [PMID: 38931172 PMCID: PMC11206641 DOI: 10.3390/nu16121817] [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: 05/11/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Obesity and type 2 diabetes are prevalent metabolic diseases that have significant links to several chronic diseases, including cancer, diabetes, hypertension, and cardiovascular disease. Muscadine grape extracts have shown the potential to reduce adiposity and improve insulin sensitivity and glucose control. Thus, this study was designed to determine the potential of muscadine grape berries extract (Pineapple and Southern Home) for its antiobesity properties in 3T3-L1 cells as a model for obesity research. The current study's data indicated the total phenolic content (TPC) and 2,2-diphenyl-1-picrylhydraziyl (DPPH) activity were higher in cultivar (CV) Southern Home, meanwhile, elevated the total flavonoid content (TFC) in Pineapple. Both extracts were safe across the tested range (0-5 mg/mL). A noticeable reduction in lipid accumulation was also found in extract-treated cells. In preadipocytes and adipocytes, the tested extracts showed significant alterations in various genes involved in glucose homeostasis and obesity. The most remarkable findings of the current study are the upregulation of two genes, Cntfr (+712.715-fold) and Hrh1 (+270.11-fold) in CV Pineapple extract-treated adipocytes 3T3-L1 and the high fold increase in Ramp3 induced by both Pineapple and Southern Home in pre-adipose cells. Furthermore, the tested extracts showed a potential to alter the mRNA of various genes, including Zfp91, B2m, Nr3c1, Insr, Atrn, Il6ra, Hsp90ab1, Sort1, and Npy1r. In conclusion, the data generated from the current study suggested that the two extracts under investigation are considered potential candidates for controlling insulin levels and managing obesity.
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Affiliation(s)
- Samia S. Messeha
- College of Science and Technology, Florida A&M University, Tallahassee, FL 32307, USA;
- College of Pharmacy and Pharmaceutical Sciences, Institute of Public Health, Florida A&M University, New Pharmacy Building, 1415 ML King Blvd., Tallahassee, FL 32307, USA
| | - Meenakshi Agarwal
- Center for Viticulture & Small Fruit Research, Florida A&M University, Tallahassee, FL 32317, USA;
| | - Sherif G. Gendy
- School of Allied Health Sciences, Florida A&M University, Tallahassee, FL 32307, USA;
| | - Sheikh B. Mehboob
- Center for Viticulture & Small Fruit Research, Florida A&M University, Tallahassee, FL 32317, USA;
| | - Karam F. A. Soliman
- College of Pharmacy and Pharmaceutical Sciences, Institute of Public Health, Florida A&M University, New Pharmacy Building, 1415 ML King Blvd., Tallahassee, FL 32307, USA
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13
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Millward DJ. Post-natal muscle growth and protein turnover: a narrative review of current understanding. Nutr Res Rev 2024; 37:141-168. [PMID: 37395180 DOI: 10.1017/s0954422423000124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
A model explaining the dietary-protein-driven post-natal skeletal muscle growth and protein turnover in the rat is updated, and the mechanisms involved are described, in this narrative review. Dietary protein controls both bone length and muscle growth, which are interrelated through mechanotransduction mechanisms with muscle growth induced both from stretching subsequent to bone length growth and from internal work against gravity. This induces satellite cell activation, myogenesis and remodelling of the extracellular matrix, establishing a growth capacity for myofibre length and cross-sectional area. Protein deposition within this capacity is enabled by adequate dietary protein and other key nutrients. After briefly reviewing the experimental animal origins of the growth model, key concepts and processes important for growth are reviewed. These include the growth in number and size of the myonuclear domain, satellite cell activity during post-natal development and the autocrine/paracrine action of IGF-1. Regulatory and signalling pathways reviewed include developmental mechanotransduction, signalling through the insulin/IGF-1-PI3K-Akt and the Ras-MAPK pathways in the myofibre and during mechanotransduction of satellite cells. Likely pathways activated by maximal-intensity muscle contractions are highlighted and the regulation of the capacity for protein synthesis in terms of ribosome assembly and the translational regulation of 5-TOPmRNA classes by mTORC1 and LARP1 are discussed. Evidence for and potential mechanisms by which volume limitation of muscle growth can occur which would limit protein deposition within the myofibre are reviewed. An understanding of how muscle growth is achieved allows better nutritional management of its growth in health and disease.
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Affiliation(s)
- D Joe Millward
- Department of Nutritional Sciences, School of Biosciences & Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
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14
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Douglas JC, Sekulovski N, Arreola MR, Oh Y, Hayashi K, MacLean JA. Normal Ovarian Function in Subfertile Mouse with Amhr2-Cre-Driven Ablation of Insr and Igf1r. Genes (Basel) 2024; 15:616. [PMID: 38790245 PMCID: PMC11121541 DOI: 10.3390/genes15050616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Insulin receptor signaling promotes cell differentiation, proliferation, and growth which are essential for oocyte maturation, embryo implantation, endometrial decidualization, and placentation. The dysregulation of insulin signaling in women with metabolic syndromes including diabetes exhibits poor pregnancy outcomes that are poorly understood. We utilized the Cre/LoxP system to target the tissue-specific conditional ablation of insulin receptor (Insr) and insulin-like growth factor-1 receptor (Igf1r) using an anti-Mullerian hormone receptor 2 (Amhr2) Cre-driver which is active in ovarian granulosa and uterine stromal cells. Our long-term goal is to examine insulin-dependent molecular mechanisms that underlie diabetic pregnancy complications, and our conditional knockout models allow for such investigation without confounding effects of ligand identity, source and cross-reactivity, or global metabolic status within dams. Puberty occurred with normal timing in all conditional knockout models. Estrous cycles progressed normally in Insrd/d females but were briefly stalled in diestrus in Igf1rd/d and double receptor (DKO) mice. The expression of vital ovulatory genes (Lhcgr, Pgr, Ptgs2) was not significantly different in 12 h post-hCG superovulated ovaries in knockout mice. Antral follicles exhibited an elevated apoptosis of granulosa cells in Igf1rd/d and DKO mice. However, the distribution of ovarian follicle subtypes and subsequent ovulations was normal in all insulin receptor mutants compared to littermate controls. While ovulation was normal, all knockout lines were subfertile suggesting that the loss of insulin receptor signaling in the uterine stroma elicits implantation and decidualization defects responsible for subfertility in Amhr2-Cre-derived insulin receptor mutants.
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Affiliation(s)
- Jenna C. Douglas
- Center for Reproductive Biology, School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA; (J.C.D.)
| | - Nikola Sekulovski
- Department of Physiology, Southern Illinois University, Carbondale, IL 62901, USA
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Madison R. Arreola
- Center for Reproductive Biology, School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA; (J.C.D.)
| | - Yeongseok Oh
- Center for Reproductive Biology, School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA; (J.C.D.)
| | - Kanako Hayashi
- Center for Reproductive Biology, School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA; (J.C.D.)
| | - James A. MacLean
- Center for Reproductive Biology, School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA; (J.C.D.)
- Department of Physiology, Southern Illinois University, Carbondale, IL 62901, USA
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15
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Albar NY, Hassaballa H, Shikh H, Albar Y, Ibrahim AS, Mousa AH, Alshanberi AM, Elgebaly A, Bahbah EI. The interaction between insulin resistance and Alzheimer's disease: a review article. Postgrad Med 2024; 136:377-395. [PMID: 38804907 DOI: 10.1080/00325481.2024.2360887] [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: 01/28/2024] [Accepted: 05/23/2024] [Indexed: 05/29/2024]
Abstract
Insulin serves multiple functions as a growth-promoting hormone in peripheral tissues. It manages glucose metabolism by promoting glucose uptake into cells and curbing the production of glucose in the liver. Beyond this, insulin fosters cell growth, drives differentiation, aids protein synthesis, and deters degradative processes like glycolysis, lipolysis, and proteolysis. Receptors for insulin and insulin-like growth factor-1 are widely expressed in the central nervous system. Their widespread presence in the brain underscores the varied and critical functions of insulin signaling there. Insulin aids in bolstering cognition, promoting neuron extension, adjusting the release and absorption of catecholamines, and controlling the expression and positioning of gamma-aminobutyric acid (GABA). Importantly, insulin can effortlessly traverse the blood-brain barrier. Furthermore, insulin resistance (IR)-induced alterations in insulin signaling might hasten brain aging, impacting its plasticity and potentially leading to neurodegeneration. Two primary pathways are responsible for insulin signal transmission: the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) pathway, which oversees metabolic responses, and the mitogen-activated protein kinase (MAPK) pathway, which guides cell growth, survival, and gene transcription. This review aimed to explore the potential shared metabolic traits between Alzheimer's disease (AD) and IR disorders. It delves into the relationship between AD and IR disorders, their overlapping genetic markers, and shared metabolic indicators. Additionally, it addresses existing therapeutic interventions targeting these intersecting pathways.
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Affiliation(s)
- Nezar Y Albar
- Internal Medicine Department, Dr. Samir Abbas Hospital, Jeddah, Saudi Arabia
| | | | - Hamza Shikh
- Ibn Sina National College for Medical Studies, Jeddah, Saudi Arabia
| | - Yassin Albar
- Fakeeh College of Medical Sciences, Jeddah, Saudi Arabia
| | | | - Ahmed Hafez Mousa
- Department of Neurosurgery, Postgraduate Medical Education, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
- Department of Neurosurgery, Rashid Hospital, Dubai Academic Health Cooperation, Dubai, United Arab Emirates
| | - Asim Muhammed Alshanberi
- Department of Community Medicine and Pilgrims Health Care, Umm Alqura University, Makkah, Saudi Arabia
- Medicine Program, Batterjee Medical College, Jeddah, Saudi Arabia
| | - Ahmed Elgebaly
- Smart Health Academic Unit, University of East London, London, UK
| | - Eshak I Bahbah
- Faculty of Medicine, Al-Azhar University, Damietta, Egypt
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16
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Lewitt MS, Boyd GW. Role of the Insulin-like Growth Factor System in Neurodegenerative Disease. Int J Mol Sci 2024; 25:4512. [PMID: 38674097 PMCID: PMC11049992 DOI: 10.3390/ijms25084512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
The insulin-like growth factor (IGF) system has paracrine and endocrine roles in the central nervous system. There is evidence that IGF signalling pathways have roles in the pathophysiology of neurodegenerative disease. This review focusses on Alzheimer's disease and Parkinson's disease, the two most common neurodegenerative disorders that are increasing in prevalence globally in relation to the aging population and the increasing prevalence of obesity and type 2 diabetes. Rodent models used in the study of the molecular pathways involved in neurodegeneration are described. However, currently, no animal model fully replicates these diseases. Mice with triple mutations in APP, PSEN and MAPT show promise as models for the testing of novel Alzheimer's therapies. While a causal relationship is not proven, the fact that age, obesity and T2D are risk factors in both strengthens the case for the involvement of the IGF system in these disorders. The IGF system is an attractive target for new approaches to management; however, there are gaps in our understanding that first need to be addressed. These include a focus beyond IGF-I on other members of the IGF system, including IGF-II, IGF-binding proteins and the type 2 IGF receptor.
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Affiliation(s)
- Moira S. Lewitt
- School of Health and Life Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
| | - Gary W. Boyd
- School of Health and Life Sciences, University of the West of Scotland, Hamilton G72 0LH, UK;
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17
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Sharman R, Harris Z, Ernst B, Mussallem D, Larsen A, Gowin K. Lifestyle Factors and Cancer: A Narrative Review. Mayo Clin Proc Innov Qual Outcomes 2024; 8:166-183. [PMID: 38468817 PMCID: PMC10925935 DOI: 10.1016/j.mayocpiqo.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024] Open
Abstract
Lifestyle factors and their impact on cancer prevention, prognosis, and survivorship are increasingly recognized in the medical literature. Lifestyle factors are primarily defined here as diet and physical activity. We conducted a narrative review of the primary published data, including randomized controlled trials and prospective studies, on the impact of primary lifestyle factors on oncogenesis and clinical outcomes in the preventative and survivorship setting. First, we discuss the oncogenic mechanisms behind primary lifestyle factors (diet, physical activity and, within these 2, obesity). Then, we discuss the impact of adherence to lifestyle guidelines and dietary patterns on cancer incidence based on primary data. Owing to the plethora of published literature, to summarize the data in a more efficient manner, we describe the role of physical activity on cancer incidence using summative systematic reviews. We end by synthesizing the primary data on lifestyle factors in the survivorship setting and conclude with potential future directions. In brief, the various large-scale studies investigating the role diet and physical activity have reported a beneficial effect on cancer prevention and survivorship. Although the impact of single lifestyle factors on cancer incidence risk reduction is generally supported, holistic approaches to address the potential synergistic impact of multiple lifestyle factors together in concert is limited. Future research to identify the potentially synergistic effects of lifestyle modifications on oncogenesis and clinical outcomes is needed, particularly in cancer subtypes beyond colorectal and breast cancers.
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Affiliation(s)
- Reya Sharman
- Division of Hematology Oncology, Department of Medicine, University of Arizona, Tucson, AZ
| | - Zoey Harris
- Division of Hematology and Medical Oncology, Department of Medicine, Mayo Clinic, Phoenix, AZ
| | - Brenda Ernst
- Division of Hematology and Medical Oncology, Department of Medicine, Mayo Clinic, Phoenix, AZ
| | - Dawn Mussallem
- Division of Hematology and Medical Oncology, Department of Medicine, Mayo Clinic, Jacksonville, FL
| | - Ashley Larsen
- Division of Hematology Oncology, Department of Medicine, University of Arizona, Tucson, AZ
| | - Krisstina Gowin
- Division of Hematology Oncology, Department of Medicine, University of Arizona, Tucson, AZ
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18
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An W, Hall C, Li J, Hung A, Wu J, Park J, Wang L, Bai XC, Choi E. Activation of the insulin receptor by insulin-like growth factor 2. Nat Commun 2024; 15:2609. [PMID: 38521788 PMCID: PMC10960814 DOI: 10.1038/s41467-024-46990-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/15/2024] [Indexed: 03/25/2024] Open
Abstract
Insulin receptor (IR) controls growth and metabolism. Insulin-like growth factor 2 (IGF2) has different binding properties on two IR isoforms, mimicking insulin's function. However, the molecular mechanism underlying IGF2-induced IR activation remains unclear. Here, we present cryo-EM structures of full-length human long isoform IR (IR-B) in both the inactive and IGF2-bound active states, and short isoform IR (IR-A) in the IGF2-bound active state. Under saturated IGF2 concentrations, both the IR-A and IR-B adopt predominantly asymmetric conformations with two or three IGF2s bound at site-1 and site-2, which differs from that insulin saturated IR forms an exclusively T-shaped symmetric conformation. IGF2 exhibits a relatively weak binding to IR site-2 compared to insulin, making it less potent in promoting full IR activation. Cell-based experiments validated the functional importance of IGF2 binding to two distinct binding sites in optimal IR signaling and trafficking. In the inactive state, the C-terminus of α-CT of IR-B contacts FnIII-2 domain of the same protomer, hindering its threading into the C-loop of IGF2, thus reducing the association rate of IGF2 with IR-B. Collectively, our studies demonstrate the activation mechanism of IR by IGF2 and reveal the molecular basis underlying the different affinity of IGF2 to IR-A and IR-B.
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Affiliation(s)
- Weidong An
- Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Catherine Hall
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Jie Li
- Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Albert Hung
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Jiayi Wu
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Junhee Park
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Liwei Wang
- Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Xiao-Chen Bai
- Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA.
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA.
| | - Eunhee Choi
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA.
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19
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Wang Y, Lei F, Lin Y, Han Y, Yang L, Tan H. Peroxisome proliferator-activated receptors as therapeutic target for cancer. J Cell Mol Med 2024; 28:e17931. [PMID: 37700501 PMCID: PMC10902584 DOI: 10.1111/jcmm.17931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/05/2023] [Accepted: 08/18/2023] [Indexed: 09/14/2023] Open
Abstract
Peroxisome proliferator-activated receptors (PPARs) are transcription factors belonging to the nuclear receptor family. There are three subtypes of PPARs, including PPAR-α, PPAR-β/δ and PPAR-γ. They are expressed in different tissues and act by regulating the expression of target genes in the form of binding to ligands. Various subtypes of PPAR have been shown to have significant roles in a wide range of biological processes including lipid metabolism, body energy homeostasis, cell proliferation and differentiation, bone formation, tissue repair and remodelling. Recent studies have found that PPARs are closely related to tumours. They are involved in cancer cell growth, angiogenesis and tumour immune response, and are essential components in tumour progression and metastasis. As such, they have become a target for cancer therapy research. In this review, we discussed the current state of knowledge on the involvement of PPARs in cancer, including their role in tumourigenesis, the impact of PPARs in tumour microenvironment and the potential of using PPARs combinational therapy to treat cancer by targeting essential signal pathways, or as adjuvants to boost the effects of current chemo and immunotherapies. Our review highlights the complexity of PPARs in cancer and the need for a better understanding of the mechanism in order to design effective cancer therapies.
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Affiliation(s)
- Yuqing Wang
- Department of Internal MedicineMontefiore Medical Center, Wakefield CampusBronxNew YorkUSA
| | - Feifei Lei
- Department of Infectious Disease, Lab of Liver Disease, Renmin HospitalHubei University of MedicineShiyanChina
| | - Yiyun Lin
- Department of Biomedical SciencesUniversity of Texas, MD Anderson Cancer CenterHoustonTexasUSA
| | - Yuru Han
- Qinghai Provincial People's HospitalXiningChina
| | - Lei Yang
- Department of Biomedical SciencesUniversity of Texas, MD Anderson Cancer CenterHoustonTexasUSA
| | - Huabing Tan
- Department of Infectious Disease, Lab of Liver Disease, Renmin HospitalHubei University of MedicineShiyanChina
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20
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Kiernan K, Alwarawrah Y, Nichols AG, Danzaki K, MacIver NJ. Insulin and IGF-1 have both overlapping and distinct effects on CD4 + T cell mitochondria, metabolism, and function. Sci Rep 2024; 14:4331. [PMID: 38383709 PMCID: PMC10881490 DOI: 10.1038/s41598-024-54836-w] [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: 07/03/2023] [Accepted: 02/17/2024] [Indexed: 02/23/2024] Open
Abstract
Insulin and insulin-like growth factor 1 (IGF-1) are metabolic hormones with known effects on CD4+ T cells through insulin receptor (IR) and IGF-1 receptor (IGF-1R) signaling. Here, we describe specific and distinct roles for these hormones and receptors. We have found that IGF-1R, but not IR, expression is increased following CD4+ T cell activation or following differentiation toward Th17 cells. Although both insulin and IGF-1 increase the metabolism of CD4+ T cells, insulin has a more potent effect. However, IGF-1 has a unique role and acts specifically on Th17 cells to increase IL-17 production and Th17 cell metabolism. Furthermore, IGF-1 decreases mitochondrial membrane potential and mitochondrial reactive oxygen species (mROS) in Th17 cells, providing a cytoprotective effect. Interestingly, both IR and IGF-1R are required for this effect of IGF-1 on mitochondria, which suggests that the hybrid IR/IGF-1R may be required for mediating the effect of IGF-1 on mitochondrial membrane potential and mROS production.
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Affiliation(s)
- Kaitlin Kiernan
- Department of Immunology, Duke University School of Medicine, Durham, NC, USA
| | - Yazan Alwarawrah
- Department of Pediatrics, Division of Pediatric Endocrinology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Amanda G Nichols
- Department of Pediatrics, Division of Pediatric Endocrinology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Keiko Danzaki
- Department of Immunology, Duke University School of Medicine, Durham, NC, USA
| | - Nancie J MacIver
- Department of Pediatrics, Division of Pediatric Endocrinology, University of North Carolina School of Medicine, Chapel Hill, NC, USA.
- Department of Nutrition, School of Medicine and Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.
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21
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Li J, Huang G. Insulin receptor alternative splicing in breast and prostate cancer. Cancer Cell Int 2024; 24:62. [PMID: 38331804 PMCID: PMC10851471 DOI: 10.1186/s12935-024-03252-1] [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: 10/24/2023] [Accepted: 02/01/2024] [Indexed: 02/10/2024] Open
Abstract
Cancer etiology represents an intricate, multifactorial orchestration where metabolically associated insulin-like growth factors (IGFs) and insulin foster cellular proliferation and growth throughout tumorigenesis. The insulin receptor (IR) exhibits two splice variants arising from alternative mRNA processing, namely IR-A, and IR-B, with remarkable distribution and biological effects disparities. This insightful review elucidates the structural intricacies, widespread distribution, and functional significance of IR-A and IR-B. Additionally, it explores the regulatory mechanisms governing alternative splicing processes, intricate signal transduction pathways, and the intricate association linking IR-A and IR-B splicing variants to breast and prostate cancer tumorigenesis. Breast cancer and prostate cancer are the most common malignant tumors with the highest incidence rates among women and men, respectively. These findings provide a promising theoretical framework for advancing preventive strategies, diagnostic modalities, and therapeutic interventions targeting breast and prostate cancer.
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Affiliation(s)
- Jinyu Li
- Department of Medical Oncology, The Second Hospital of Dalian Medical University, No. 467 Zhongshan Road, Shahekou District, Dalian, 116023, Liaoning, China
| | - Gena Huang
- Department of Medical Oncology, The Second Hospital of Dalian Medical University, No. 467 Zhongshan Road, Shahekou District, Dalian, 116023, Liaoning, China.
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22
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Zhang Z, Wang X, Liu Y, Wu H, Zhu X, Ye C, Ren H, Chong W, Shang L, Li L. Phospholysine phosphohistidine inorganic pyrophosphate phosphatase suppresses insulin-like growth factor 1 receptor expression to inhibit cell adhesion and proliferation in gastric cancer. MedComm (Beijing) 2024; 5:e472. [PMID: 38292328 PMCID: PMC10827000 DOI: 10.1002/mco2.472] [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: 04/06/2023] [Revised: 12/01/2023] [Accepted: 01/01/2024] [Indexed: 02/01/2024] Open
Abstract
Phospholysine phosphohistidine inorganic pyrophosphate phosphatase (LHPP) has recently emerged as a novel tumor suppressor. Researchers have observed that LHPP plays a crucial role in inhibiting proliferation, growth, migration, invasion, and cell metabolism across various cancers. Nevertheless, the specific functions and underlying mechanisms of LHPP as a tumor suppressor in gastric cancer (GC) require further exploration. The expression of LHPP was assessed in human GC specimens and cell lines. Various assays were employed to evaluate the impact of LHPP on GC cells. RNA sequencing and Gene Set Enrichment Analysis were conducted to unravel the mechanism through which LHPP regulates GC cell behavior. Additionally, xenograft nude mouse models were utilized to investigate the in vivo effects of LHPP. The findings indicate that LHPP, functioning as a tumor suppressor, is downregulated in both GC tissues and cells. LHPP emerges as an independent risk factor for GC patients, and its expression level exhibits a positive correlation with patient prognosis. LHPP exerts inhibitory effects on the adhesion and proliferation of GC cells by suppressing the expression of insulin-like growth factor 1 receptor (IGF1R) and modulating downstream signaling pathways. Consequently, LHPP holds potential as a biomarker for targeted therapy involving IGF1R inhibition in GC patients.
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Affiliation(s)
- Zihao Zhang
- Department of Gastrointestinal SurgeryShandong Provincial HospitalShandong UniversityJinanShandongChina
- Department of General SurgeryZhongshan HospitalFudan UniversityShanghaiChina
| | - Xu Wang
- Department of AnesthesiologyShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
| | - Yuan Liu
- Department of Gastrointestinal SurgeryShandong Provincial HospitalShandong UniversityJinanShandongChina
| | - Hao Wu
- Department of Gastrointestinal SurgeryShandong Provincial HospitalShandong UniversityJinanShandongChina
- Department of Gastrointestinal SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
- Department of General SurgeryPeking Union Medical CollegePeking Union Medical College HospitalChinese Academy of Medical SciencesBeijingChina
| | - Xingyu Zhu
- Department of Gastrointestinal SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
| | - Chunshui Ye
- Department of Gastrointestinal SurgeryShandong Provincial HospitalShandong UniversityJinanShandongChina
| | - Huicheng Ren
- Department of Gastrointestinal SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
| | - Wei Chong
- Department of Gastrointestinal SurgeryShandong Provincial HospitalShandong UniversityJinanShandongChina
- Department of Gastrointestinal SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesShandongChina
- Key Laboratory of Engineering of Shandong ProvinceShandong Provincial HospitalJinanShandongChina
| | - Liang Shang
- Department of Gastrointestinal SurgeryShandong Provincial HospitalShandong UniversityJinanShandongChina
- Department of Gastrointestinal SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesShandongChina
- Key Laboratory of Engineering of Shandong ProvinceShandong Provincial HospitalJinanShandongChina
| | - Leping Li
- Department of Gastrointestinal SurgeryShandong Provincial HospitalShandong UniversityJinanShandongChina
- Department of Gastrointestinal SurgeryShandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesShandongChina
- Key Laboratory of Engineering of Shandong ProvinceShandong Provincial HospitalJinanShandongChina
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23
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Zeng X, Wu C, Cao Y, Li H, Zhang X. Mdm2-mediated ubiquitination of PKCβII is responsible for insulin-induced heterologous desensitization of dopamine D 3 receptor. FEBS Lett 2024; 598:400-414. [PMID: 38302840 DOI: 10.1002/1873-3468.14815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/21/2023] [Accepted: 01/05/2024] [Indexed: 02/03/2024]
Abstract
The insulin and dopaminergic systems in the brain are associated with schizophrenia and Parkinson's disease with respect to etiology and treatment. The present study investigated the crosstalk between the insulin receptor (IR) and dopamine receptor and found that insulin stimulation selectively inhibits signaling of D3 R in a PKCβII-dependent manner. Upon insulin stimulation, E3 ligase enzyme Mdm2 moves out of the nucleus to ubiquitinate PKCβII. Subsequently, ubiquitinated PKCβII translocates to the cell membrane and interacts with D3 R in a phosphorylation-dependent manner at S229/257, resulting in the attenuation of D3 R signaling and initiating clathrin-mediated endocytosis and downregulation. Considering that both IR and D3 R are closely related to some neuropsychosis, this study could provide new molecular insight into the etiology of the disorder.
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Affiliation(s)
- Xingyue Zeng
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
| | - ChengYan Wu
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
| | - Yongkai Cao
- Department of Neurology, Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, China
| | - Huijun Li
- Department of Pharmaceuticals, People's Hospital of Zunyi City Bo Zhou District, China
| | - Xiaohan Zhang
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, China
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24
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Athar F, Karmani M, Templeman N. Metabolic hormones are integral regulators of female reproductive health and function. Biosci Rep 2024; 44:BSR20231916. [PMID: 38131197 PMCID: PMC10830447 DOI: 10.1042/bsr20231916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 11/29/2023] [Accepted: 12/21/2023] [Indexed: 12/23/2023] Open
Abstract
The female reproductive system is strongly influenced by nutrition and energy balance. It is well known that food restriction or energy depletion can induce suppression of reproductive processes, while overnutrition is associated with reproductive dysfunction. However, the intricate mechanisms through which nutritional inputs and metabolic health are integrated into the coordination of reproduction are still being defined. In this review, we describe evidence for essential contributions by hormones that are responsive to food intake or fuel stores. Key metabolic hormones-including insulin, the incretins (glucose-dependent insulinotropic polypeptide and glucagon-like peptide-1), growth hormone, ghrelin, leptin, and adiponectin-signal throughout the hypothalamic-pituitary-gonadal axis to support or suppress reproduction. We synthesize current knowledge on how these multifaceted hormones interact with the brain, pituitary, and ovaries to regulate functioning of the female reproductive system, incorporating in vitro and in vivo data from animal models and humans. Metabolic hormones are involved in orchestrating reproductive processes in healthy states, but some also play a significant role in the pathophysiology or treatment strategies of female reproductive disorders. Further understanding of the complex interrelationships between metabolic health and female reproductive function has important implications for improving women's health overall.
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Affiliation(s)
- Faria Athar
- Department of Biology, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Muskan Karmani
- Department of Biology, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Nicole M. Templeman
- Department of Biology, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
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25
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Zhou Y, Liu K, Tang W, Zhang Y, Sun Y, Wu Y, Shi Y, Yao Z, Li Y, Bai R, Liang R, Sun P, Chang X, Wang S, Zhu Y, Han X. β-Cell miRNA-503-5p Induced by Hypomethylation and Inflammation Promotes Insulin Resistance and β-Cell Decompensation. Diabetes 2024; 73:57-74. [PMID: 37847900 DOI: 10.2337/db22-1044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 10/02/2023] [Indexed: 10/19/2023]
Abstract
Chronic inflammation promotes pancreatic β-cell decompensation to insulin resistance because of local accumulation of supraphysiologic interleukin 1β (IL-1β) levels. However, the underlying molecular mechanisms remain elusive. We show that miR-503-5p is exclusively upregulated in islets from humans with type 2 diabetes and diabetic rodents because of its promoter hypomethylation and increased local IL-1β levels. β-Cell-specific miR-503 transgenic mice display mild or severe diabetes in a time- and expression-dependent manner. By contrast, deletion of the miR-503 cluster protects mice from high-fat diet-induced insulin resistance and glucose intolerance. Mechanistically, miR-503-5p represses c-Jun N-terminal kinase-interacting protein 2 (JIP2) translation to activate mitogen-activated protein kinase signaling cascades, thus inhibiting glucose-stimulated insulin secretion (GSIS) and compensatory β-cell proliferation. In addition, β-cell miR-503-5p is packaged in nanovesicles to dampen insulin signaling transduction in liver and adipose tissues by targeting insulin receptors. Notably, specifically blocking the miR-503 cluster in β-cells effectively remits aging-associated diabetes through recovery of GSIS capacity and insulin sensitivity. Our findings demonstrate that β-cell miR-503-5p is required for the development of insulin resistance and β-cell decompensation, providing a potential therapeutic target against diabetes. ARTICLE HIGHLIGHTS Promoter hypomethylation during natural aging permits miR-503-5p overexpression in islets under inflammation conditions, conserving from rodents to humans. Impaired β-cells release nanovesicular miR-503-5p to accumulate in liver and adipose tissue, leading to their insulin resistance via the miR-503-5p/insulin receptor/phosphorylated AKT axis. Accumulated miR-503-5p in β-cells impairs glucose-stimulated insulin secretion via the JIP2-coordinated mitogen-activated protein kinase signaling cascades. Specific blockage of β-cell miR-503-5p improves β-cell function and glucose tolerance in aging mice.
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Affiliation(s)
- Yuncai Zhou
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Kerong Liu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wei Tang
- Department of Endocrinology, Geriatric Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yan Zhang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yi Sun
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yangyang Wu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ying Shi
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhengjian Yao
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yating Li
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Rongjie Bai
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Rui Liang
- Organ Transplant Center, Tianjin First Central Hospital, Nankai University, Tianjin, China
| | - Peng Sun
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiaoai Chang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Shusen Wang
- Organ Transplant Center, Tianjin First Central Hospital, Nankai University, Tianjin, China
| | - Yunxia Zhu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiao Han
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
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26
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Yakupov EZ, Zhamieva RA. [Cognitive impairments and emotional disorders and their correction in perimenopausal women]. Zh Nevrol Psikhiatr Im S S Korsakova 2024; 124:48-53. [PMID: 39072566 DOI: 10.17116/jnevro202412406148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
The presented literature review reveals the topic of the features of risk factors for cognitive impairment in women in the perimenopausal period (PMP), as well as the possibilities of their earliest detection and correction. The paper searches for various symptoms and predictors of the development of cognitive impairment in women in the PMP. The key features include certain difficulties in making a diagnosis at earlier stages. The relationship of metabolic disorders with factors negatively affecting the health of women in the PPP, as well as contributing to the deterioration of cognitive functions, is considered. Women are more at risk of developing cognitive impairment and represent a specific target group that requires special attention in assessing risk factors and methods for correcting cognitive disorders. To date, the relationship between gender and dementia risk still needs to be studied in more depth. Given this, menopause is an important physiological period, as it is accompanied by intense hormonal changes that may be the direct cause of cognitive decline. Many women experience mood disorders, anxiety, increased mental and/or physical fatigue, irritability, mild cognitive disorders, which requires an interdisciplinary approach by doctors to this issue. All these manifestations should be evaluated and corrected in time to avoid their progression and a decrease in the quality of life. An integrated approach to therapy, both medicinal and non-medicinal, can significantly improve the quality of life of patients in the PPP.
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Affiliation(s)
- E Z Yakupov
- LLC Scientific Research Medical Complex «Vashe Zdorovya», Kazan, Russia
| | - R A Zhamieva
- LLC Scientific Research Medical Complex «Vashe Zdorovya», Kazan, Russia
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27
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Monteiro M, Zhang X, Yee D. Insulin promotes growth in breast cancer cells through the type I IGF receptor in insulin receptor deficient cells. Exp Cell Res 2024; 434:113862. [PMID: 38036052 PMCID: PMC10842809 DOI: 10.1016/j.yexcr.2023.113862] [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: 09/22/2023] [Revised: 11/14/2023] [Accepted: 11/21/2023] [Indexed: 12/02/2023]
Abstract
Breast cancer is the most common cancer in women. The upregulation of insulin-like growth factor (IGF) system observed in certain types of breast cancers was linked to growth, metastasis, and survival resulting in multiple strategies designed to target the type I IGF receptor (IGF-1R) in breast cancer. These attempts failed to prove beneficial and it has been suggested that insulin receptor (IR) could also play an important role in breast cancer biology. To better understand the IR's role in breast cancer cells, the receptor was deleted from MCF-7L cells using CRISPR technology, and fluorescence-assisted cell sorting was used to obtain clone 35 (CL35). It was found that CL35 activated signaling pathways upon insulin stimulation despite the absence of IR expression. We hypothesized that CL35 used a surrogate receptor for sustained growth and development. IGF-1R was able to activate insulin signaling and growth in CL35. Thus, insulin may play a central role in regulating breast cancer growth due to its ability to activate all the receptors of the IGF family. These findings argue that dual targeting of IR and IGF-IR may be required to inhibit breast cancer growth.
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Affiliation(s)
- Marvis Monteiro
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA; Purdue University, Heine Pharmacy Building, 575 Stadium Mall Drive, West Lafayette, IN, 47907-2091, USA
| | - Xihong Zhang
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Douglas Yee
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.
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28
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Scalia P, Marino IR, Asero S, Pandini G, Grimberg A, El-Deiry WS, Williams SJ. Autocrine IGF-II-Associated Cancers: From a Rare Paraneoplastic Event to a Hallmark in Malignancy. Biomedicines 2023; 12:40. [PMID: 38255147 PMCID: PMC10813354 DOI: 10.3390/biomedicines12010040] [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: 11/26/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
The paraneoplastic syndrome referred in the literature as non-islet-cell tumor hypoglycemia (NICTH) and extra-pancreatic tumor hypoglycemia (EPTH) was first reported almost a century ago, and the role of cancer-secreted IGF-II in causing this blood glucose-lowering condition has been widely established. The landscape emerging in the last few decades, based on molecular and cellular findings, supports a broader role for IGF-II in cancer biology beyond its involvement in the paraneoplastic syndrome. In particular, a few key findings are constantly observed during tumorigenesis, (a) a relative and absolute increase in fetal insulin receptor isoform (IRA) content, with (b) an increase in IGF-II high-molecular weight cancer-variants (big-IGF-II), and (c) a stage-progressive increase in the IGF-II autocrine signal in the cancer cell, mostly during the transition from benign to malignant growth. An increasing and still under-exploited combinatorial pattern of the IGF-II signal in cancer is shaping up in the literature with respect to its transducing receptorial system and effector intracellular network. Interestingly, while surgical and clinical reports have traditionally restricted IGF-II secretion to a small number of solid malignancies displaying paraneoplastic hypoglycemia, a retrospective literature analysis, along with publicly available expression data from patient-derived cancer cell lines conveyed in the present perspective, clearly suggests that IGF-II expression in cancer is a much more common event, especially in overt malignancy. These findings strengthen the view that (1) IGF-II expression/secretion in solid tumor-derived cancer cell lines and tissues is a broader and more common event compared to the reported IGF-II association to paraneoplastic hypoglycemia, and (2) IGF-II associates to the commonly observed autocrine loops in cancer cells while IGF-I cancer-promoting effects may be linked to its paracrine effects in the tumor microenvironment. Based on these evidence-centered considerations, making the autocrine IGF-II loop a hallmark for malignant cancer growth, we here propose the functional name of IGF-II secreting tumors (IGF-IIsT) to overcome the view that IGF-II secretion and pro-tumorigenic actions affect only a clinical sub-group of rare tumors with associated hypoglycemic symptoms. The proposed scenario provides an updated logical frame towards biologically sound therapeutic strategies and personalized therapeutic interventions for currently unaccounted IGF-II-producing cancers.
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Affiliation(s)
- Pierluigi Scalia
- The ISOPROG-Somatolink EPFP Research Network, Philadelphia, PA 19102, USA; 93100 Caltanissetta, Italy
| | - Ignazio R. Marino
- Department of Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Salvatore Asero
- The ISOPROG-Somatolink EPFP Research Network, Philadelphia, PA 19102, USA; 93100 Caltanissetta, Italy
- ARNAS Garibaldi, UOC Chirurgia Oncologica, Nesima, 95122 Catania, Italy
| | - Giuseppe Pandini
- The ISOPROG-Somatolink EPFP Research Network, Philadelphia, PA 19102, USA; 93100 Caltanissetta, Italy
| | - Adda Grimberg
- Perelman School of Medicine, University of Pennsylvania, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Wafik S. El-Deiry
- Legorreta Cancer Center, Brown University, Providence, RI 02903, USA
| | - Stephen J. Williams
- The ISOPROG-Somatolink EPFP Research Network, Philadelphia, PA 19102, USA; 93100 Caltanissetta, Italy
- Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
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29
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Podmore L, Poloz Y, Iorio C, Mouaaz S, Nixon K, Smirnov P, McDonnell B, Lam S, Zhang B, Tharmapalan P, Sarkar S, Vyas F, Ennis M, Dowling R, Stambolic V. Insulin receptor loss impairs mammary tumorigenesis in mice. Cell Rep 2023; 42:113251. [PMID: 37913774 DOI: 10.1016/j.celrep.2023.113251] [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: 09/30/2022] [Revised: 09/05/2023] [Accepted: 09/27/2023] [Indexed: 11/03/2023] Open
Abstract
Breast cancer (BC) prognosis and outcome are adversely affected by obesity. Hyperinsulinemia, common in the obese state, is associated with higher risk of death and recurrence in BC. Up to 80% of BCs overexpress the insulin receptor (INSR), which correlates with worse prognosis. INSR's role in mammary tumorigenesis was tested by generating MMTV-driven polyoma middle T (PyMT) and ErbB2/Her2 BC mouse models, respectively, with coordinate mammary epithelium-restricted deletion of INSR. In both models, deletion of either one or both copies of INSR leads to a marked delay in tumor onset and burden. Longitudinal phenotypic characterization of mouse tumors and cells reveals that INSR deletion affects tumor initiation, not progression and metastasis. INSR upholds a bioenergetic phenotype in non-transformed mammary epithelial cells, independent of its kinase activity. Similarity of phenotypes elicited by deletion of one or both copies of INSR suggest a dose-dependent threshold for INSR impact on mammary tumorigenesis.
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Affiliation(s)
- Lauren Podmore
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Yekaterina Poloz
- Princess Margaret Cancer Centre, University Health Network, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Catherine Iorio
- Princess Margaret Cancer Centre, University Health Network, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Samar Mouaaz
- Princess Margaret Cancer Centre, University Health Network, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Kevin Nixon
- Princess Margaret Cancer Centre, University Health Network, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Petr Smirnov
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Brianna McDonnell
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Sonya Lam
- Princess Margaret Cancer Centre, University Health Network, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Bowen Zhang
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Pirashaanthy Tharmapalan
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Soumili Sarkar
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Foram Vyas
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | | | - Ryan Dowling
- Princess Margaret Cancer Centre, University Health Network, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada
| | - Vuk Stambolic
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada; Princess Margaret Cancer Centre, University Health Network, Princess Margaret Cancer Research Tower, Toronto, ON M5G 1L7, Canada.
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30
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Vaganova AN, Shemyakova TS, Lenskaia KV, Rodionov RN, Steenblock C, Gainetdinov RR. Trace Amine-Associated Receptors and Monoamine-Mediated Regulation of Insulin Secretion in Pancreatic Islets. Biomolecules 2023; 13:1618. [PMID: 38002300 PMCID: PMC10669413 DOI: 10.3390/biom13111618] [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: 09/27/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
Currently, metabolic syndrome treatment includes predominantly pharmacological symptom relief and complex lifestyle changes. Trace amines and their receptor systems modulate signaling pathways of dopamine, norepinephrine, and serotonin, which are involved in the pathogenesis of this disorder. Trace amine-associated receptor 1 (TAAR1) is expressed in endocrine organs, and it was revealed that TAAR1 may regulate insulin secretion in pancreatic islet β-cells. For instance, accumulating data demonstrate the positive effect of TAAR1 agonists on the dynamics of metabolic syndrome progression and MetS-associated disease development. The role of other TAARs (TAAR2, TAAR5, TAAR6, TAAR8, and TAAR9) in the islet's function is much less studied. In this review, we summarize the evidence of TAARs' contribution to the metabolic syndrome pathogenesis and regulation of insulin secretion in pancreatic islets. Additionally, by the analysis of public transcriptomic data, we demonstrate that TAAR1 and other TAAR receptors are expressed in the pancreatic islets. We also explore associations between the expression of TAARs mRNA and other genes in studied samples and demonstrate the deregulation of TAARs' functional associations in patients with metabolic diseases compared to healthy donors.
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Affiliation(s)
- Anastasia N. Vaganova
- Institute of Translational Biomedicine, St. Petersburg State University, 199034 St. Petersburg, Russia; (A.N.V.); (T.S.S.)
- St. Petersburg State University Hospital, St. Petersburg State University, 199034 St. Petersburg, Russia
| | - Taisiia S. Shemyakova
- Institute of Translational Biomedicine, St. Petersburg State University, 199034 St. Petersburg, Russia; (A.N.V.); (T.S.S.)
| | - Karina V. Lenskaia
- Department of Medicine, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia;
| | - Roman N. Rodionov
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (R.N.R.); (C.S.)
| | - Charlotte Steenblock
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (R.N.R.); (C.S.)
| | - Raul R. Gainetdinov
- Institute of Translational Biomedicine, St. Petersburg State University, 199034 St. Petersburg, Russia; (A.N.V.); (T.S.S.)
- St. Petersburg State University Hospital, St. Petersburg State University, 199034 St. Petersburg, Russia
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31
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Galal MA, Alouch SS, Alsultan BS, Dahman H, Alyabis NA, Alammar SA, Aljada A. Insulin Receptor Isoforms and Insulin Growth Factor-like Receptors: Implications in Cell Signaling, Carcinogenesis, and Chemoresistance. Int J Mol Sci 2023; 24:15006. [PMID: 37834454 PMCID: PMC10573852 DOI: 10.3390/ijms241915006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/22/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
This comprehensive review thoroughly explores the intricate involvement of insulin receptor (IR) isoforms and insulin-like growth factor receptors (IGFRs) in the context of the insulin and insulin-like growth factor (IGF) signaling (IIS) pathway. This elaborate system encompasses ligands, receptors, and binding proteins, giving rise to a wide array of functions, including aspects such as carcinogenesis and chemoresistance. Detailed genetic analysis of IR and IGFR structures highlights their distinct isoforms, which arise from alternative splicing and exhibit diverse affinities for ligands. Notably, the overexpression of the IR-A isoform is linked to cancer stemness, tumor development, and resistance to targeted therapies. Similarly, elevated IGFR expression accelerates tumor progression and fosters chemoresistance. The review underscores the intricate interplay between IRs and IGFRs, contributing to resistance against anti-IGFR drugs. Consequently, the dual targeting of both receptors could present a more effective strategy for surmounting chemoresistance. To conclude, this review brings to light the pivotal roles played by IRs and IGFRs in cellular signaling, carcinogenesis, and therapy resistance. By precisely modulating these receptors and their complex signaling pathways, the potential emerges for developing enhanced anti-cancer interventions, ultimately leading to improved patient outcomes.
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Affiliation(s)
- Mariam Ahmed Galal
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
- Department of Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 1QU, UK
| | - Samhar Samer Alouch
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
| | - Buthainah Saad Alsultan
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
| | - Huda Dahman
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
| | - Nouf Abdullah Alyabis
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
| | - Sarah Ammar Alammar
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
| | - Ahmad Aljada
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
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32
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Tunc-Ata M, Altunay ZM, Alphan A, Kucukatay V. Effect of insulin on IR and GLP1-R expressions in HT22 cells. Med Oncol 2023; 40:301. [PMID: 37712993 DOI: 10.1007/s12032-023-02172-w] [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: 07/14/2023] [Accepted: 08/22/2023] [Indexed: 09/16/2023]
Abstract
Insulin is a significant growth factor that specifically binds to the insulin receptor (IR) in the brain and then activates the PI3K-AKT pathway. Glucagon-like peptide 1 (GLP-1) has a variety of functions including neuroprotection, support for neurogenesis, and increasing insulin signal. This study aims to investigate the effect of insulin administered to immortalized clonal mouse hippocampal cell line (HT22) at different doses and intervals on IR, insulin receptor A (IRA), insulin receptor B (IRB), and Glucagon-like peptide 1 receptor (GLP1-R) mRNA expression and protein levels. The cells were planted in 6 well plates at a density of 3 × 105/4 × 105. Cells treated with insulin at different concentrations (5, 10, and 40 nM) were collected at 0.5, 2, 8, 16, and 24 h. RT-PCR and western blot analysis were used to measure mRNA expression and protein levels. Our results showed that insulin has short and long-term effects on IR and GLP1-R expression depending on dose and time. These findings may guide future studies targeting IR isoforms and GLP1-R in particular, as well as determining the optimal dose and duration of insulin stimulation in insulin signaling research.
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Affiliation(s)
- Melek Tunc-Ata
- Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli, Turkey.
| | - Zeynep Mine Altunay
- Department of Neuroscience, School of Medicine, University of Connecticut, Farmington, CT, USA
| | - Aysel Alphan
- Department of Neuroscience, Institute of Health Sciences, Pamukkale University, Denizli, Turkey
| | - Vural Kucukatay
- Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
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33
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Alves SS, Servilha-Menezes G, Rossi L, da Silva Junior RMP, Garcia-Cairasco N. Evidence of disturbed insulin signaling in animal models of Alzheimer's disease. Neurosci Biobehav Rev 2023; 152:105326. [PMID: 37479008 DOI: 10.1016/j.neubiorev.2023.105326] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 06/02/2023] [Accepted: 07/17/2023] [Indexed: 07/23/2023]
Abstract
Since glucose reuptake by neurons is mostly independent of insulin, it has been an intriguing question whether insulin has or not any roles in the brain. Consequently, the identification of insulin receptors in the central nervous system has fueled investigations of insulin functions in the brain. It is also already known that insulin can influence glucose reuptake by neurons, mostly during activities that have the highest energy demand. The identification of high density of insulin receptors in the hippocampus also suggests that insulin may present important roles related to memory. In this context, studies have reported worse performance in cognitive tests among diabetic patients. In addition, alterations in the regulation of central insulin pathways have been observed in the brains of Alzheimer's disease (AD) patients. In fact, some authors have proposed AD as a third type of diabetes and recently, our group proposed insulin resistance as a common link between different AD hypotheses. Therefore, in the present narrative review, we intend to revise and gather the evidence of disturbed insulin signaling in experimental animal models of AD.
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Affiliation(s)
- Suélen Santos Alves
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), Brazil
| | - Gabriel Servilha-Menezes
- Department of Physiology, Ribeirão Preto Medical School - University of São Paulo (FMRP-USP), Brazil
| | - Leticia Rossi
- Department of Physiology, Ribeirão Preto Medical School - University of São Paulo (FMRP-USP), Brazil
| | - Rui Milton Patrício da Silva Junior
- Department of Physiology, Ribeirão Preto Medical School - University of São Paulo (FMRP-USP), Brazil; Institute of Neuroscience of Castilla y León, University of Salamanca, Salamanca, Spain
| | - Norberto Garcia-Cairasco
- Department of Neurosciences and Behavioral Sciences, Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), Brazil; Department of Physiology, Ribeirão Preto Medical School - University of São Paulo (FMRP-USP), Brazil.
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Brox-Torrecilla N, García Cano AM, Valderrábano P, Quintero Tobar A, Escobar-Morreale HF, Araujo-Castro M. Prevalence and incidence of type 2 diabetes mellitus in patients with adrenal incidentalomas: a study of 709 cases. Endocrine 2023; 81:484-491. [PMID: 37212980 DOI: 10.1007/s12020-023-03396-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/07/2023] [Indexed: 05/23/2023]
Abstract
AIM To evaluate the prevalence and incidence of type 2 diabetes in patients with nonfunctioning adrenal incidentalomas (NFAI) or adrenal incidentalomas (AI) with autonomous cortisol secretion (ACS). METHODS In this single-center retrospective study, all patients with adrenal incidentalomas ≥1 cm and ACS or NFAI studied between 2013 and 2020 were included. ACS was defined by a post-dexamethasone suppression test (DST) serum cortisol concentration ≥1.8 μg/dl, in the absence of signs of hypercortisolism, and NFAI was defined as a DST < 1.8 μg/dl without biochemical evidence of hypersecretion of other hormones. RESULTS Inclusion criteria were met by 231 patients with ACS and 478 with NFAI. At diagnosis, type 2 diabetes was present in 24.3% of patients. No differences were found in the prevalence of type 2 diabetes (27.7 vs. 22.6%, P = 0.137) between patients with ACS and NFAI. However, fasting plasma glucose values and glycated hemoglobin levels were significantly higher in patients with ACS than with NFAI (112 ± 35.6 vs. 105 ± 29 mg/dl, P = 0.004; and 6.5 ± 1.4 vs. 6.1 ± 0.9%, P = 0.005, respectively). Furthermore, patients with type 2 diabetes had higher urinary free cortisol (P = 0.039) and late-night salivary cortisol levels (P = 0.010) than those without type 2 diabetes. After a median follow-up of 28 months, no differences were found in the incidence of type 2 diabetes between the groups (HR 1.17, 95% 0.52-2.64). CONCLUSION Type 2 diabetes was present in one fourth of our cohort. We found no differences in its prevalence or incidence between the groups. However, glycemic control might be worse among diabetic patients with ACS. Higher concentrations of urinary and salivary cortisol were found in patients with than without type 2 diabetes.
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Affiliation(s)
- Noemi Brox-Torrecilla
- Department of Endocrinology & Nutrition. Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS, Madrid, Spain
| | - Ana M García Cano
- Department of Biochemistry, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Pablo Valderrábano
- Department of Endocrinology & Nutrition. Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS, Madrid, Spain
| | | | - Héctor F Escobar-Morreale
- Department of Endocrinology & Nutrition, Hospital Universitario Ramón y Cajal & Universidad de Alcalá & Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) & Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Marta Araujo-Castro
- Department of Endocrinology & Nutrition. Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS, Madrid, Spain.
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Mishra AG, Deshmane RB, Thappa DK, Lona J, Ghade NS, Sonar SM, Krishnan AR. In Vitro Biological Characterization of Recombinant Insulin Aspart from Biogenomics and Originator Insulin Aspart. BioDrugs 2023; 37:709-719. [PMID: 37285012 DOI: 10.1007/s40259-023-00607-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2023] [Indexed: 06/08/2023]
Abstract
BACKGROUND Bioassays are used to identify the pharmacological activity of new or chemically unknown compounds, as well as their undesirable effect, including toxicity. Biological assays are also required to ensure the quality, safety, and efficacy of recombinant biologics to confirm its biosimilarity to its originator. In the present study, analytical similarity between the biosimilar and its innovator is established by in vitro bioassays. OBJECTIVE The objective of this study was to show the comparative in vitro characterization of the recombinant insulin aspart from BioGenomics with its originator insulin aspart, using relevant biological assays. METHODS In vitro assays such as receptor binding, receptor autophosphorylation, glucose uptake, and mitogenic potential were analyzed for biological characterization of BioGenomics recombinant insulin aspart (BGL-ASP) manufactured by BioGenomics Limited and NovoRapid® as the reference medicinal product (RMP) manufactured by Novo Nordisk. Insulin receptor binding was studied by a state-of-the-art method, surface plasmon resonance (SPR) for biomolecular interactions. The receptor autophosphorylation assay measures the phosphorylated insulin receptor in cell lysates. The glucose uptake assay measures the uptake of glucose by 3T3-L1 cells in the presence of insulin. Lipogenesis was studied in treated 3T3-L1 cells by detecting the accumulation of lipid droplets in the cells. Mitogenic effect was studied by cell proliferation assay using MCF-7 cells. A rabbit bioidentity test was performed by measuring the sudden decrease in blood glucose in the presence of insulin. RESULTS The binding studies showed that the affinity of BGL-ASP was highly comparable to NovoRapid®. Insulin receptor autophosphorylation, glucose uptake, and lipogenesis demonstrated high similarity to the RMP. The mitogenic assay for BGL-ASP did not show any proliferative effect and was comparable to the RMP. The in vivo bioidentity test showed that the BGL-ASP is highly similar to the innovator, NovoRapid®. CONCLUSION The biological characterization studies of BGL-ASP demonstrated high binding and functional similarity to NovoRapid®.
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Affiliation(s)
| | | | | | - Jeseena Lona
- BioGenomics Ltd., Thane, Maharashtra, 400610, India
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Di Lorenzo M, Cacciapuoti N, Lonardo MS, Nasti G, Gautiero C, Belfiore A, Guida B, Chiurazzi M. Pathophysiology and Nutritional Approaches in Polycystic Ovary Syndrome (PCOS): A Comprehensive Review. Curr Nutr Rep 2023; 12:527-544. [PMID: 37213054 PMCID: PMC10444658 DOI: 10.1007/s13668-023-00479-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2023] [Indexed: 05/23/2023]
Abstract
PURPOSE OF REVIEW Polycystic ovary syndrome (PCOS) is the most common endocrine and metabolic disorder in women of reproductive age worldwide. This disease causes menstrual, metabolic, and biochemical abnormalities such as hyperandrogenism, oligo-anovulatory menstrual cycles, polycystic ovary, hyperleptinemia, insulin resistance (IR), and cardiometabolic disorders, often associated with overweight or obesity and visceral adiposity. RECENT FINDINGS The etiology and pathophysiology of PCOS are not yet fully understood, but insulin seems to play a key role in this disease. PCOS shares an inflammatory state with other chronic diseases such as obesity, type II diabetes, and cardiovascular diseases; however, recent studies have shown that a healthy nutritional approach can improve IR and metabolic and reproductive functions, representing a valid therapeutic strategy to ameliorate PCOS symptomatology. This review aimed to summarize and collect evidence about different nutritional approaches such as the Mediterranean diet (MedDiet) and the ketogenic diet (KD), as well as bariatric surgery and nutraceutical supplementation as probiotics, prebiotics, and synbiotics, among the others, used in patients with PCOS.
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Affiliation(s)
- M Di Lorenzo
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
- Infectious Diseases and Gender Medicine Unit, Cotugno Hospital, AO Dei Colli, Naples, Italy
| | - N Cacciapuoti
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - M S Lonardo
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - G Nasti
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - C Gautiero
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - A Belfiore
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - B Guida
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - M Chiurazzi
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy.
- Department of Medical Oncology, AO "A. Cardarelli", Naples, Italy.
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Horwitz A, Birk R. Adipose Tissue Hyperplasia and Hypertrophy in Common and Syndromic Obesity-The Case of BBS Obesity. Nutrients 2023; 15:3445. [PMID: 37571382 PMCID: PMC10421039 DOI: 10.3390/nu15153445] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/16/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Obesity is a metabolic state generated by the expansion of adipose tissue. Adipose tissue expansion depends on the interplay between hyperplasia and hypertrophy, and is mainly regulated by a complex interaction between genetics and excess energy intake. However, the genetic regulation of adipose tissue expansion is yet to be fully understood. Obesity can be divided into common multifactorial/polygenic obesity and monogenic obesity, non-syndromic and syndromic. Several genes related to obesity were found through studies of monogenic non-syndromic obesity models. However, syndromic obesity, characterized by additional features other than obesity, suggesting a more global role of the mutant genes related to the syndrome and, thus, an additional peripheral influence on the development of obesity, were hardly studied to date in this regard. This review summarizes present knowledge regarding the hyperplasia and hypertrophy of adipocytes in common obesity. Additionally, we highlight the scarce research on syndromic obesity as a model for studying adipocyte hyperplasia and hypertrophy, focusing on Bardet-Biedl syndrome (BBS). BBS obesity involves central and peripheral mechanisms, with molecular and mechanistic alternation in adipocyte hyperplasia and hypertrophy. Thus, we argue that using syndromic obesity models, such as BBS, can further advance our knowledge regarding peripheral adipocyte regulation in obesity.
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Affiliation(s)
| | - Ruth Birk
- Department of Nutrition, Faculty of Health Sciences, Ariel University, Ariel 40700, Israel;
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Yuan Y, Shi Z, Xiong S, Hu R, Song Q, Song Z, Ong SG, Jiang Y. Differential roles of insulin receptor in adipocyte progenitor cells in mice. Mol Cell Endocrinol 2023; 573:111968. [PMID: 37244600 PMCID: PMC10846871 DOI: 10.1016/j.mce.2023.111968] [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: 03/03/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/29/2023]
Abstract
The development of white adipose tissue (WAT) occurs during distinct embryonic and postnatal stages, and it is subsequently maintained throughout life. However, the specific mediators and mechanisms responsible for WAT development during different phases remain unclear. In this study, we investigate the role of the insulin receptor (IR) in regulating adipogenesis and adipocyte function within adipocyte progenitor cells (APCs) during WAT development and homeostasis. We use two in vivo adipose lineage tracking and deletion systems to delete IR either in embryonic APCs or adult APCs, respectively, to explore the specific requirements of IR during WAT development and WAT homeostasis in mice. Our data suggest that IR expression in APCs may not be essential for adult adipocyte differentiation but appears to be crucial for adipose tissue development. We reveal a surprising divergent role of IR in APCs during WAT development and homeostasis.
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Affiliation(s)
- Yexian Yuan
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangdong Province Key Laboratory of Animal Nutritional Regulation and National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China; Department of Physiology and Biophysics, The University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Zuoxiao Shi
- Department of Physiology and Biophysics, The University of Illinois at Chicago, Chicago, IL, 60612, USA; Department of Pharmaceutical Sciences, The University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Shaolei Xiong
- Department of Microbiology and Immunology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Ruoci Hu
- Department of Physiology and Biophysics, The University of Illinois at Chicago, Chicago, IL, 60612, USA; Department of Pharmaceutical Sciences, The University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Qing Song
- Department of Kinesiology and Nutrition, The University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Zhenyuan Song
- Department of Kinesiology and Nutrition, The University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Sang-Ging Ong
- Department of Pharmacology and Regenerative Medicine, College of Medicine, The University of Illinois at Chicago, Illinois, 60612, USA; Division of Cardiology, Department of Medicine, The University of Illinois College of Medicine, Illinois, 60612, USA
| | - Yuwei Jiang
- Department of Physiology and Biophysics, The University of Illinois at Chicago, Chicago, IL, 60612, USA; Department of Pharmaceutical Sciences, The University of Illinois at Chicago, Chicago, IL, 60612, USA; Division of Endocrinology, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA.
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Muoio MG, Pellegrino M, Rapicavoli V, Talia M, Scavo G, Sergi V, Vella V, Pettinato S, Galasso MG, Lappano R, Scordamaglia D, Cirillo F, Pulvirenti A, Rigiracciolo DC, Maggiolini M, Belfiore A, De Francesco EM. RAGE inhibition blunts insulin-induced oncogenic signals in breast cancer. Breast Cancer Res 2023; 25:84. [PMID: 37461077 PMCID: PMC10351154 DOI: 10.1186/s13058-023-01686-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/11/2023] [Indexed: 07/20/2023] Open
Abstract
The receptor for advanced glycation end products (RAGE) is implicated in diabetes and obesity complications, as well as in breast cancer (BC). Herein, we evaluated whether RAGE contributes to the oncogenic actions of Insulin, which plays a key role in BC progression particularly in obese and diabetic patients. Analysis of the publicly available METABRIC study, which collects gene expression and clinical data from a large cohort (n = 1904) of BC patients, revealed that RAGE and the Insulin Receptor (IR) are co-expressed and associated with negative prognostic parameters. In MCF-7, ZR75 and 4T1 BC cells, as well as in patient-derived Cancer-Associated Fibroblasts, the pharmacological inhibition of RAGE as well as its genetic depletion interfered with Insulin-induced activation of the oncogenic pathway IR/IRS1/AKT/CD1. Mechanistically, IR and RAGE directly interacted upon Insulin stimulation, as shown by in situ proximity ligation assays and coimmunoprecipitation studies. Of note, RAGE inhibition halted the activation of both IR and insulin like growth factor 1 receptor (IGF-1R), as demonstrated in MCF-7 cells KO for the IR and the IGF-1R gene via CRISPR-cas9 technology. An unbiased label-free proteomic analysis uncovered proteins and predicted pathways affected by RAGE inhibition in Insulin-stimulated BC cells. Biologically, RAGE inhibition reduced cell proliferation, migration, and patient-derived mammosphere formation triggered by Insulin. In vivo, the pharmacological inhibition of RAGE halted Insulin-induced tumor growth, without affecting blood glucose homeostasis. Together, our findings suggest that targeting RAGE may represent an appealing opportunity to blunt Insulin-induced oncogenic signaling in BC.
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Affiliation(s)
- M G Muoio
- Endocrinology, Department of Clinical and Experimental Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122, Catania, Italy
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - M Pellegrino
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - V Rapicavoli
- Endocrinology, Department of Clinical and Experimental Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122, Catania, Italy
| | - M Talia
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - G Scavo
- Endocrinology, Department of Clinical and Experimental Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122, Catania, Italy
| | - V Sergi
- Endocrinology, Department of Clinical and Experimental Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122, Catania, Italy
| | - V Vella
- Endocrinology, Department of Clinical and Experimental Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122, Catania, Italy
| | - S Pettinato
- Breast Unit Breast Surgery, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - M G Galasso
- Pathological Anatomy Unit, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - R Lappano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - D Scordamaglia
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - F Cirillo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - A Pulvirenti
- Bioinformatics Unit, Department of Clinical and Experimental Medicine, University of Catania, 95131, Catania, Italy
| | - D C Rigiracciolo
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Via Adamello 16, 20139, Milan, Italy
| | - M Maggiolini
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy.
| | - A Belfiore
- Endocrinology, Department of Clinical and Experimental Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122, Catania, Italy
| | - E M De Francesco
- Endocrinology, Department of Clinical and Experimental Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122, Catania, Italy.
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40
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Pardridge WM. Receptor-mediated drug delivery of bispecific therapeutic antibodies through the blood-brain barrier. FRONTIERS IN DRUG DELIVERY 2023; 3:1227816. [PMID: 37583474 PMCID: PMC10426772 DOI: 10.3389/fddev.2023.1227816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Therapeutic antibody drug development is a rapidly growing sector of the pharmaceutical industry. However, antibody drug development for the brain is a technical challenge, and therapeutic antibodies for the central nervous system account for ~3% of all such agents. The principal obstacle to antibody drug development for brain or spinal cord is the lack of transport of large molecule biologics across the blood-brain barrier (BBB). Therapeutic antibodies can be made transportable through the blood-brain barrier by the re-engineering of the therapeutic antibody as a BBB-penetrating bispecific antibody (BSA). One arm of the BSA is the therapeutic antibody and the other arm of the BSA is a transporting antibody. The transporting antibody targets an exofacial epitope on a BBB receptor, and this enables receptor-mediated transcytosis (RMT) of the BSA across the BBB. Following BBB transport, the therapeutic antibody then engages the target receptor in brain. RMT systems at the BBB that are potential conduits to the brain include the insulin receptor (IR), the transferrin receptor (TfR), the insulin-like growth factor receptor (IGFR) and the leptin receptor. Therapeutic antibodies have been re-engineered as BSAs that target the insulin receptor, TfR, or IGFR RMT systems at the BBB for the treatment of Alzheimer's disease and Parkinson's disease.
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Waldrep KM, Rodgers JI, Garrett SM, Wolf BJ, Feghali-Bostwick CA. The Role of SOX9 in IGF-II-Mediated Pulmonary Fibrosis. Int J Mol Sci 2023; 24:11234. [PMID: 37510994 PMCID: PMC10378869 DOI: 10.3390/ijms241411234] [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: 03/22/2023] [Revised: 06/29/2023] [Accepted: 07/02/2023] [Indexed: 07/30/2023] Open
Abstract
Pulmonary fibrosis (PF) associated with systemic sclerosis (SSc) results in significant morbidity and mortality. We previously reported that insulin-like growth factor-II (IGF-II) is overexpressed in lung tissues and fibroblasts from SSc patients, and IGF-II fosters fibrosis by upregulating collagen type I, fibronectin, and TGFβ. We now show that IGF-II augments mRNA levels of profibrotic signaling molecules TGFβ2 (p ≤ 0.01) and TGFβ3 (p ≤ 0.05), collagen type III (p ≤ 0.01), and the collagen posttranslational modification enzymes P4HA2 (p ≤ 0.05), P3H2 (p ≤ 0.05), LOX (p = 0.065), LOXL2 (p ≤ 0.05), LOXL4 (p ≤ 0.05) in primary human lung fibroblasts. IGF-II increases protein levels of TGFβ2 (p ≤ 0.01), as well as COL3A1, P4HA2, P4Hβ, and LOXL4 (p ≤ 0.05). In contrast, IGF-II decreases mRNA levels of the collagen degradation enzymes cathepsin (CTS) K, CTSB, and CTSL and protein levels of CTSK (p ≤ 0.05). The SRY-box transcription factor 9 (SOX9) is overexpressed in SSc lung tissues at the mRNA (p ≤ 0.05) and protein (p ≤ 0.01) levels compared to healthy controls. IGF-II induces SOX9 in lung fibroblasts (p ≤ 0.05) via the IGF1R/IR hybrid receptor, and SOX9 regulates TGFβ2 (p ≤ 0.05), TGFβ3 (p ≤ 0.05), COL3A1 (p ≤ 0.01), and P4HA2 (p ≤ 0.001) downstream of IGF-II. Our results identify a novel IGF-II signaling axis and downstream targets that are regulated in a SOX9-dependent and -independent manner. Our findings provide novel insights on the role of IGF-II in promoting pulmonary fibrosis.
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Affiliation(s)
- Kristy M. Waldrep
- Department of Medicine, Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA; (K.M.W.); (J.I.R.); (S.M.G.)
| | - Jessalyn I. Rodgers
- Department of Medicine, Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA; (K.M.W.); (J.I.R.); (S.M.G.)
| | - Sara M. Garrett
- Department of Medicine, Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA; (K.M.W.); (J.I.R.); (S.M.G.)
| | - Bethany J. Wolf
- Department of Public Health Sciences, Biostatistics and Bioinformatics, Medical University of South Carolina, Charleston, SC 29425, USA;
| | - Carol A. Feghali-Bostwick
- Department of Medicine, Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA; (K.M.W.); (J.I.R.); (S.M.G.)
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Sulyok E, Farkas B, Bodis J. Pathomechanisms of Prenatally Programmed Adult Diseases. Antioxidants (Basel) 2023; 12:1354. [PMID: 37507894 PMCID: PMC10376205 DOI: 10.3390/antiox12071354] [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: 05/26/2023] [Revised: 06/22/2023] [Accepted: 06/25/2023] [Indexed: 07/30/2023] Open
Abstract
Based on epidemiological observations Barker et al. put forward the hypothesis/concept that an adverse intrauterine environment (involving an insufficient nutrient supply, chronic hypoxia, stress, and toxic substances) is an important risk factor for the development of chronic diseases later in life. The fetus responds to the unfavorable environment with adaptive reactions, which ensure survival in the short run, but at the expense of initiating pathological processes leading to adult diseases. In this review, the major mechanisms (including telomere dysfunction, epigenetic modifications, and cardiovascular-renal-endocrine-metabolic reactions) will be outlined, with a particular emphasis on the role of oxidative stress in the fetal origin of adult diseases.
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Affiliation(s)
- Endre Sulyok
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- Faculty of Health Sciences, Doctoral School of Health Sciences, University of Pécs, 7624 Pécs, Hungary
- MTA-PTE Human Reproduction Scientific Research Group, 7624 Pécs, Hungary
| | - Balint Farkas
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- MTA-PTE Human Reproduction Scientific Research Group, 7624 Pécs, Hungary
- Department of Obstetrics and Gynecology, School of Medicine, University of Pécs, 7624 Pécs, Hungary
| | - Jozsef Bodis
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- Faculty of Health Sciences, Doctoral School of Health Sciences, University of Pécs, 7624 Pécs, Hungary
- MTA-PTE Human Reproduction Scientific Research Group, 7624 Pécs, Hungary
- Department of Obstetrics and Gynecology, School of Medicine, University of Pécs, 7624 Pécs, Hungary
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Rajoria B, Zhang X, Yee D. IGF-1 Stimulates Glycolytic ATP Production in MCF-7L Cells. Int J Mol Sci 2023; 24:10209. [PMID: 37373357 PMCID: PMC10299323 DOI: 10.3390/ijms241210209] [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: 05/15/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
The Insulin-like Growth Factor (IGF) system in breast cancer progression has been a matter of interest for decades, but targeting this system did not result in a successful clinical strategy. The system's complexity and homology of its two receptors-insulin receptor (IR) and type 1 insulin-like growth factor receptor (IGF-1R)-are possible causes. The IGF system maintains cell proliferation and also regulates metabolism, making it a pathway to explore. To understand the metabolic phenotype of breast cancer cells, we quantified their real-time ATP production rate upon acute stimulation with ligands-insulin-like growth factor 1 (1GF-1) and insulin. MCF-7L cells express both IGF-1R and IR, while tamoxifen-resistant MCF-7L (MCF-7L TamR) cells have downregulated IGF-1R with unchanged IR levels. Treating MCF-7L cells with 5 nM IGF-1 increased the glycolytic ATP production rate, while 10 nM insulin did not affect metabolism when compared with the control. Neither treatment altered ATP production in MCF-7L TamR cells. This study provides evidence of the relationship between metabolic dysfunction, cancer, and the IGF axis. In these cells, IGF-1R, and not IR, regulates ATP production.
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Affiliation(s)
- Bhumika Rajoria
- Department of Pharmacology, University of Minnesota, Minneapolis, MN 55455, USA;
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA;
| | - Xihong Zhang
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA;
| | - Douglas Yee
- Department of Pharmacology, University of Minnesota, Minneapolis, MN 55455, USA;
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA;
- Department of Medicine, University of Minnesota, Minneapolis, MN 55455, USA
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Boo HJ, Min HY, Park CS, Park JS, Jeong JY, Lee SY, Kim WY, Lee JW, Oh SR, Park RW, Lee HY. Dual Impact of IGF2 on Alveolar Stem Cell Function during Tobacco-Induced Injury Repair and Development of Pulmonary Emphysema and Cancer. Cancer Res 2023; 83:1782-1799. [PMID: 36971490 DOI: 10.1158/0008-5472.can-22-3543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 02/23/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023]
Abstract
Pulmonary emphysema is a destructive inflammatory disease primarily caused by cigarette smoking (CS). Recovery from CS-induced injury requires proper stem cell (SC) activities with a tightly controlled balance of proliferation and differentiation. Here we show that acute alveolar injury induced by two representative tobacco carcinogens, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone and benzo[a]pyrene (N/B), increased IGF2 expression in alveolar type 2 (AT2) cells to promote their SC function and facilitate alveolar regeneration. Autocrine IGF2 signaling upregulated Wnt genes, particularly Wnt3, to stimulate AT2 proliferation and alveolar barrier regeneration after N/B-induced acute injury. In contrast, repetitive N/B exposure provoked sustained IGF2-Wnt signaling through DNMT3A-mediated epigenetic control of IGF2 expression, causing a proliferation/differentiation imbalance in AT2s and development of emphysema and cancer. Hypermethylation of the IGF2 promoter and overexpression of DNMT3A, IGF2, and the Wnt target gene AXIN2 were seen in the lungs of patients with CS-associated emphysema and cancer. Pharmacologic or genetic approaches targeting IGF2-Wnt signaling or DNMT prevented the development of N/B-induced pulmonary diseases. These findings support dual roles of AT2 cells, which can either stimulate alveolar repair or promote emphysema and cancer depending on IGF2 expression levels. SIGNIFICANCE IGF2-Wnt signaling plays a key role in AT2-mediated alveolar repair after cigarette smoking-induced injury but also drives pathogenesis of pulmonary emphysema and cancer when hyperactivated.
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Affiliation(s)
- Hye-Jin Boo
- Creative Research Initiative Center for Concurrent Control of Emphysema and Lung Cancer, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Hye-Young Min
- Creative Research Initiative Center for Concurrent Control of Emphysema and Lung Cancer, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
| | - Choon-Sik Park
- Soonchunhyang University Bucheon Hospital, Bucheon-si, Gyeonggi-do, Republic of Korea
| | - Jong-Sook Park
- Soonchunhyang University Bucheon Hospital, Bucheon-si, Gyeonggi-do, Republic of Korea
| | - Ji Yun Jeong
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea
| | - Shin Yup Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Lung Cancer Center, Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea
| | - Woo-Young Kim
- College of Pharmacy, Sookmyung Women's University, Seoul, Republic of Korea
| | - Jae-Won Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Sei-Ryang Oh
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju-si, Chungcheongbuk-do, Republic of Korea
| | - Rang-Woon Park
- Department of Biochemistry and Cell Biology, School of Medicine, and Cell and Matrix Research Institute, Kyungpook National University, Daegu, Republic of Korea
| | - Ho-Young Lee
- Creative Research Initiative Center for Concurrent Control of Emphysema and Lung Cancer, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea
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Ock S, Choi SW, Choi SH, Kang H, Kim SJ, Lee WS, Kim J. Insulin signaling is critical for sinoatrial node maintenance and function. Exp Mol Med 2023; 55:965-973. [PMID: 37121973 PMCID: PMC10238478 DOI: 10.1038/s12276-023-00988-0] [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: 12/17/2022] [Revised: 02/12/2023] [Accepted: 02/12/2023] [Indexed: 05/02/2023] Open
Abstract
Insulin and insulin-like growth factor 1 (IGF-1) signaling regulate cellular growth and glucose metabolism in the myocardium. However, their physiological role in the cells of the cardiac conduction system has never been explored. Therefore, we sought to determine the spatiotemporal function of insulin/IGF-1 receptors in the sinoatrial node (SAN). We generated cardiac conduction cell-specific inducible IGF-1 receptor (IGF-1R) knockout (KO) (CSIGF1RKO), insulin receptor (IR) KO (CSIRKO), and IR/IGF-1R double-KO (CSDIRKO) mice and evaluated their phenotypes. Telemetric electrocardiography revealed regular sinus rhythm in CSIGF1RKO mice, indicating that IGF-1R is dispensable for normal pacemaking. In contrast, CSIRKO and CSDIRKO mice exhibited profound sinus bradycardia. CSDIRKO mice showed typical sinus node dysfunction characterized by junctional rhythm and sinus pauses on electrocardiography. Interestingly, the lack of an insulin receptor in the SAN cells of CSIRKO and CSDIRKO mice caused sinus nodal fibrosis. Mechanistically, hyperpolarization-activated cyclic nucleotide-gated channel 4 (HCN4) protein expression significantly decreased in the CSIRKO and CSDIRKO mice relative to the controls. A patch-clamp study of the SAN cells of CSIRKO mice revealed a significant decrease in the funny current, which is responsible for spontaneous diastolic depolarization in the SAN. This result suggested that insulin receptor loss reduces the heart rate via downregulation of the HCN4 channel. Additionally, HCN1 expression was decreased in CSDIRKO mice, explaining their sinus node dysfunction. Our results reveal a previously unrecognized role of insulin/IGF-1 signaling in sinus node structural maintenance and pacemaker function.
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Affiliation(s)
- Sangmi Ock
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Seong Woo Choi
- Departments of Physiology and Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea
- Department of Physiology, Dongguk University College of Medicine, Gyeongju, Korea
| | - Seung Hee Choi
- Division of Endocrinology and Metabolism, Departments of Internal Medicine and Biochemistry and Cell Biology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Hyun Kang
- Department of Anesthesiology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Sung Joon Kim
- Departments of Physiology and Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea
| | - Wang-Soo Lee
- Division of Cardiology, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea.
| | - Jaetaek Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea.
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Scalia P, Merali C, Barrero C, Suma A, Carnevale V, Merali S, Williams SJ. Novel Isoform DTX3c Associates with UBE2N-UBA1 and Cdc48/p97 as Part of the EphB4 Degradation Complex Regulated by the Autocrine IGF-II/IR A Signal in Malignant Mesothelioma. Int J Mol Sci 2023; 24:ijms24087380. [PMID: 37108544 PMCID: PMC10139083 DOI: 10.3390/ijms24087380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/08/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
EphB4 angiogenic kinase over-expression in Mesothelioma cells relies upon a degradation rescue signal provided by autocrine IGF-II activation of Insulin Receptor A. However, the identity of the molecular machinery involved in EphB4 rapid degradation upon IGF-II signal deprivation are unknown. Using targeted proteomics, protein-protein interaction methods, PCR cloning, and 3D modeling approaches, we identified a novel ubiquitin E3 ligase complex recruited by the EphB4 C tail upon autocrine IGF-II signal deprivation. We show this complex to contain a previously unknown N-Terminal isoform of Deltex3 E3-Ub ligase (referred as "DTX3c"), along with UBA1(E1) and UBE2N(E2) ubiquitin ligases and the ATPase/unfoldase Cdc48/p97. Upon autocrine IGF-II neutralization in cultured MSTO211H (a Malignant Mesothelioma cell line that is highly responsive to the EphB4 degradation rescue IGF-II signal), the inter-molecular interactions between these factors were enhanced and their association with the EphB4 C-tail increased consistently with the previously described EphB4 degradation pattern. The ATPase/unfoldase activity of Cdc48/p97 was required for EphB4 recruitment. As compared to the previously known isoforms DTX3a and DTX3b, a 3D modeling analysis of the DTX3c Nt domain showed a unique 3D folding supporting isoform-specific biological function(s). We shed light on the molecular machinery associated with autocrine IGF-II regulation of oncogenic EphB4 kinase expression in a previously characterized IGF-II+/EphB4+ Mesothelioma cell line. The study provides early evidence for DTX3 Ub-E3 ligase involvement beyond the Notch signaling pathway.
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Affiliation(s)
- Pierluigi Scalia
- The ISOPROG-Somatolink EPFP Research Network, Philadelphia, PA 19102, USA and 93100 Caltanissetta, Italy
- Sbarro Institute for Cancer Research and Molecular Medicine and Center for Biotechnology, Temple University, Philadelphia, PA 19122, USA
| | - Carmen Merali
- Proteomics and Metabolomics Facility, Moulder Center for Drug Discovery Research, School of Pharmacy, Temple University, Philadelphia, PA 19140, USA
| | - Carlos Barrero
- Proteomics and Metabolomics Facility, Moulder Center for Drug Discovery Research, School of Pharmacy, Temple University, Philadelphia, PA 19140, USA
| | - Antonio Suma
- Institute of Computational Molecular Science, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
| | - Vincenzo Carnevale
- Institute of Computational Molecular Science, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
| | - Salim Merali
- Proteomics and Metabolomics Facility, Moulder Center for Drug Discovery Research, School of Pharmacy, Temple University, Philadelphia, PA 19140, USA
| | - Stephen J Williams
- The ISOPROG-Somatolink EPFP Research Network, Philadelphia, PA 19102, USA and 93100 Caltanissetta, Italy
- Sbarro Institute for Cancer Research and Molecular Medicine and Center for Biotechnology, Temple University, Philadelphia, PA 19122, USA
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Orosz G, Szabó L, Bereti S, Zámbó V, Csala M, Kereszturi É. Molecular Basis of Unequal Alternative Splicing of Human SCD5 and Its Alteration by Natural Genetic Variations. Int J Mol Sci 2023; 24:ijms24076517. [PMID: 37047490 PMCID: PMC10095032 DOI: 10.3390/ijms24076517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/22/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023] Open
Abstract
Alternative splicing (AS) is a major means of post-transcriptional control of gene expression, and provides a dynamic versatility of protein isoforms. Cancer-related AS disorders have diagnostic, prognostic and therapeutic values. Changes in the expression and AS of human stearoyl-CoA desaturase-5 (SCD5) are promising specific tumor markers, although the transcript variants (TVs) of the gene have not yet been confirmed. Our in silico, in vitro and in vivo study focuses on the distribution of SCD5 TVs (A and B) in human tissues, the functionality of the relevant splice sites, and their modulation by certain single-nucleotide variations (SNVs). An order of magnitude higher SCD5A expression was found compared with SCD5B. This unequal splicing is attributed to a weaker recognition of the SCD5B-specific splicing acceptor site, based on predictions confirmed by an optimized minigene assay. The pronounced dominance of SCD5A was largely modified (rs1430176385_A, rs1011850309_A) or even inverted (rs1011850309_C) by natural SNVs at the TV-specific splice sites. Our results provide long missing data on the proportion of SCD5 TVs in human tissues and reveal mutation-driven changes in SCD5 AS, potentially affecting tumor-associated reprogramming of lipid metabolism, thus having prognostic significance, which may be utilized for novel and personalized therapeutic approaches.
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Affiliation(s)
- Gabriella Orosz
- Department of Molecular Biology, Semmelweis University, H-1085 Budapest, Hungary
| | - Luca Szabó
- Department of Molecular Biology, Semmelweis University, H-1085 Budapest, Hungary
| | - Szanna Bereti
- Department of Molecular Biology, Semmelweis University, H-1085 Budapest, Hungary
| | - Veronika Zámbó
- Department of Molecular Biology, Semmelweis University, H-1085 Budapest, Hungary
| | - Miklós Csala
- Department of Molecular Biology, Semmelweis University, H-1085 Budapest, Hungary
| | - Éva Kereszturi
- Department of Molecular Biology, Semmelweis University, H-1085 Budapest, Hungary
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Wissmiller K, Bilekova S, Franko A, Lutz SZ, Katsburg M, Gulde S, Pellegata NS, Stenzl A, Heni M, Berti L, Häring HU, Lickert H. Inceptor correlates with markers of prostate cancer progression and modulates insulin/IGF1 signaling and cancer cell migration. Mol Metab 2023; 71:101706. [PMID: 36931467 PMCID: PMC10074927 DOI: 10.1016/j.molmet.2023.101706] [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: 12/01/2022] [Revised: 02/21/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
OBJECTIVE The insulin/insulin-like growth factor 1 (IGF1) pathway is emerging as a crucial component of prostate cancer progression. Therefore, we investigated the role of the novel insulin/IGF1 signaling modulator inceptor in prostate cancer. METHODS We analyzed the expression of inceptor in human samples of benign prostate epithelium and prostate cancer. Further, we performed signaling and functional assays using prostate cancer cell lines. RESULTS We found that inceptor was expressed in human benign and malignant prostate tissue and its expression positively correlated with various genes of interest, including genes involved in androgen signaling. In vitro, total levels of inceptor were increased upon androgen deprivation and correlated with high levels of androgen receptor in the nucleus. Inceptor overexpression was associated with increased cell migration, altered IGF1R trafficking and higher IGF1R activation. CONCLUSIONS Our in vitro results showed that inceptor expression was associated with androgen status, increased migration, and IGF1R signaling. In human samples, inceptor expression was significantly correlated with markers of prostate cancer progression. Taken together, these data provide a basis for investigation of inceptor in the context of prostate cancer.
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Affiliation(s)
- Katharina Wissmiller
- Institute of Diabetes and Regeneration Research at the Helmholtz Center Munich, Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; German Center for Diabetes Research (DZD), Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; Technical University of Munich, School of Medicine, Ismaninger Str. 22, 81675, Munich, Germany
| | - Sara Bilekova
- Institute of Diabetes and Regeneration Research at the Helmholtz Center Munich, Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; German Center for Diabetes Research (DZD), Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; Technical University of Munich, School of Medicine, Ismaninger Str. 22, 81675, Munich, Germany
| | - Andras Franko
- German Center for Diabetes Research (DZD), Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; Institute of Diabetes and Metabolic Disease at the Helmholtz Center Munich, Ottfried-Müller-Str. 10, 72076, Tübingen, Germany; Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, Ottfried-Müller-Str. 10, 72076, Tübingen, Germany
| | - Stefan Z Lutz
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, Ottfried-Müller-Str. 10, 72076, Tübingen, Germany; Clinic for Geriatric and Orthopedic Rehabilitation Bad Sebastiansweiler, Hechinger Str. 26, 72116, Mössingen, Germany
| | - Miriam Katsburg
- Institute of Diabetes and Regeneration Research at the Helmholtz Center Munich, Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany
| | - Sebastian Gulde
- Institute of Diabetes and Cancer at the Helmholtz Center Munich, Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany
| | - Natalia S Pellegata
- Institute of Diabetes and Cancer at the Helmholtz Center Munich, Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany
| | - Arnulf Stenzl
- Department of Urology, University Hospital Tübingen, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Martin Heni
- German Center for Diabetes Research (DZD), Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; Institute of Diabetes and Metabolic Disease at the Helmholtz Center Munich, Ottfried-Müller-Str. 10, 72076, Tübingen, Germany; Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, Ottfried-Müller-Str. 10, 72076, Tübingen, Germany; Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Lucia Berti
- German Center for Diabetes Research (DZD), Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; Institute of Diabetes and Metabolic Disease at the Helmholtz Center Munich, Ottfried-Müller-Str. 10, 72076, Tübingen, Germany
| | - Hans-Ulrich Häring
- German Center for Diabetes Research (DZD), Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; Institute of Diabetes and Metabolic Disease at the Helmholtz Center Munich, Ottfried-Müller-Str. 10, 72076, Tübingen, Germany; Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital Tübingen, Ottfried-Müller-Str. 10, 72076, Tübingen, Germany
| | - Heiko Lickert
- Institute of Diabetes and Regeneration Research at the Helmholtz Center Munich, Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; German Center for Diabetes Research (DZD), Ingolstaedter Landstr. 1, 85764, Neuherberg, Germany; Technical University of Munich, School of Medicine, Ismaninger Str. 22, 81675, Munich, Germany.
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Miao X, Luo Q, Zhao H, Qin X. Comparison of alternative splicing (AS) events in adipose tissue of polled dorset versus small tail han sheep. Heliyon 2023; 9:e14938. [PMID: 37095997 PMCID: PMC10121611 DOI: 10.1016/j.heliyon.2023.e14938] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 04/03/2023] Open
Abstract
Background During the alternative splicing (AS), the exons of primary transcripts are spliced in various arrangements, resulting in structurally and functionally distinct mRNAs and proteins. This study aimed to examine genes with AS events from Small Tail Han sheep and Dorset sheep to explore the mechanism of adipose developments. Methods This study identified the genes with AS events in adipose tissues of two different sheep with next-generation sequencing. In this paper, genes with significantly different AS events were performed gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses. Results 364 genes with 411 A S events showed significant differences in adipose tissues between the two breeds; 108 genes with 120 A S events were extremely significant differences between the two breeds. We identified several novel genes that are related with adipose growth and development. The results of KEGG and GO analysis indicated that oocyte meiosis, mitogen-activated protein kinase (Wnt), mitogen-activated protein kinase (MAPK) signaling pathway, etc. Were closely related to the adipose tissue developments. Conclusions This paper revealed that the genes with AS events are important for adipose tissues in sheep, exploring the mechanisms of AS events associated with adipose tissue developments in sheep of different breeds.
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50
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Zorina II, Avrova NF, Zakharova IO, Shpakov AO. Prospects for the Use of Intranasally Administered Insulin and Insulin-Like Growth Factor-1 in Cerebral Ischemia. BIOCHEMISTRY (MOSCOW) 2023; 88:374-391. [PMID: 37076284 DOI: 10.1134/s0006297923030070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
Abstract
Current approaches to the treatment of stroke have significant limitations, and neuroprotective therapy is ineffective. In view of this, searching for effective neuroprotectors and developing new neuroprotective strategies remain a pressing topic in research of cerebral ischemia. Insulin and insulin-like growth factor-1 (IGF-1) play a key role in the brain functioning by regulating the growth, differentiation, and survival of neurons, neuronal plasticity, food intake, peripheral metabolism, and endocrine functions. Insulin and IGF-1 produce multiple effects in the brain, including neuroprotective action in cerebral ischemia and stroke. Experiments in animals and cell cultures have shown that under hypoxic conditions, insulin and IGF-1 improve energy metabolism in neurons and glial cells, promote blood microcirculation in the brain, restore nerve cell functions and neurotransmission, and produce the anti-inflammatory and antiapoptotic effects on brain cells. The intranasal route of insulin and IGF-1 administration is of particular interest in the clinical practice, since it allows controlled delivery of these hormones directly to the brain, bypassing the blood-brain barrier. Intranasally administered insulin alleviated cognitive impairments in elderly people with neurodegenerative and metabolic disorders; intranasally administered insulin and IGF-1 promoted survival of animals with ischemic stroke. The review discusses the published data and results of our own studies on the mechanisms of neuroprotective action of intranasally administered insulin and IGF-1 in cerebral ischemia, as well as the prospects of using these hormones for normalization of CNS functions and reduction of neurodegenerative changes in this pathology.
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Affiliation(s)
- Inna I Zorina
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint-Petersburg, 194223, Russia.
| | - Natalia F Avrova
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint-Petersburg, 194223, Russia
| | - Irina O Zakharova
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint-Petersburg, 194223, Russia
| | - Alexander O Shpakov
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint-Petersburg, 194223, Russia
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