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Ou LP, Liu YJ, Qiu ST, Yang C, Tang JX, Li XY, Liu HF, Ye ZN. Glutaminolysis is a Potential Therapeutic Target for Kidney Diseases. Diabetes Metab Syndr Obes 2024; 17:2789-2807. [PMID: 39072347 PMCID: PMC11283263 DOI: 10.2147/dmso.s471711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 07/15/2024] [Indexed: 07/30/2024] Open
Abstract
Metabolic reprogramming contributes to the progression and prognosis of various kidney diseases. Glutamine is the most abundant free amino acid in the body and participates in more metabolic processes than other amino acids. Altered glutamine metabolism is a prominent feature in different kidney diseases. Glutaminolysis converts glutamine into the TCA cycle metabolite, alpha-ketoglutarate, via a cascade of enzymatic reactions. This metabolic pathway plays pivotal roles in inflammation, maladaptive repair, cell survival and proliferation, redox homeostasis, and immune regulation. Given the crucial role of glutaminolysis in bioenergetics and anaplerotic fluxes in kidney pathogenesis, studies on this cascade could provide a better understanding of kidney diseases, thus inspiring the development of potential methods for targeted therapy. Emerging evidence has shown that targeting glutaminolysis is a promising therapeutic strategy for ameliorating kidney disease. In this narrative review, equation including keywords related to glutamine, glutaminolysis and kidney are subjected to an exhaustive search on Pubmed database, we identified all relevant articles published before 1 April, 2024. Afterwards, we summarize the regulation of glutaminolysis in major kidney diseases and its underlying molecular mechanisms. Furthermore, we highlight therapeutic strategies targeting glutaminolysis and their potential clinical applications.
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Affiliation(s)
- Li-Ping Ou
- Institute of Nephrology, and Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-Communicable Diseases, and Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
| | - Yong-Jian Liu
- Institute of Nephrology, and Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-Communicable Diseases, and Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
| | - Shi-Tong Qiu
- Institute of Nephrology, and Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-Communicable Diseases, and Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
| | - Chen Yang
- Institute of Nephrology, and Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-Communicable Diseases, and Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
| | - Ji-Xin Tang
- Institute of Nephrology, and Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-Communicable Diseases, and Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
| | - Xiao-Yu Li
- Institute of Nephrology, and Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-Communicable Diseases, and Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
| | - Hua-Feng Liu
- Institute of Nephrology, and Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-Communicable Diseases, and Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
| | - Zhen-Nan Ye
- Institute of Nephrology, and Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-Communicable Diseases, and Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, People’s Republic of China
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Muranaka H, Akinsola R, Billet S, Pandol SJ, Hendifar AE, Bhowmick NA, Gong J. Glutamine Supplementation as an Anticancer Strategy: A Potential Therapeutic Alternative to the Convention. Cancers (Basel) 2024; 16:1057. [PMID: 38473414 PMCID: PMC10930819 DOI: 10.3390/cancers16051057] [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: 02/09/2024] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
Glutamine, a multifaceted nonessential/conditionally essential amino acid integral to cellular metabolism and immune function, holds pivotal importance in the landscape of cancer therapy. This review delves into the intricate dynamics surrounding both glutamine antagonism strategies and glutamine supplementation within the context of cancer treatment, emphasizing the critical role of glutamine metabolism in cancer progression and therapy. Glutamine antagonism, aiming to disrupt tumor growth by targeting critical metabolic pathways, is challenged by the adaptive nature of cancer cells and the complex metabolic microenvironment, potentially compromising its therapeutic efficacy. In contrast, glutamine supplementation supports immune function, improves gut integrity, alleviates treatment-related toxicities, and improves patient well-being. Moreover, recent studies highlighted its contributions to epigenetic regulation within cancer cells and its potential to bolster anti-cancer immune functions. However, glutamine implementation necessitates careful consideration of potential interactions with ongoing treatment regimens and the delicate equilibrium between supporting normal cellular function and promoting tumorigenesis. By critically assessing the implications of both glutamine antagonism strategies and glutamine supplementation, this review aims to offer comprehensive insights into potential therapeutic strategies targeting glutamine metabolism for effective cancer management.
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Affiliation(s)
- Hayato Muranaka
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (H.M.); (R.A.); (S.B.); (S.J.P.); (A.E.H.); (N.A.B.)
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Rasaq Akinsola
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (H.M.); (R.A.); (S.B.); (S.J.P.); (A.E.H.); (N.A.B.)
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Sandrine Billet
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (H.M.); (R.A.); (S.B.); (S.J.P.); (A.E.H.); (N.A.B.)
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Stephen J. Pandol
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (H.M.); (R.A.); (S.B.); (S.J.P.); (A.E.H.); (N.A.B.)
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Andrew E. Hendifar
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (H.M.); (R.A.); (S.B.); (S.J.P.); (A.E.H.); (N.A.B.)
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Neil A. Bhowmick
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (H.M.); (R.A.); (S.B.); (S.J.P.); (A.E.H.); (N.A.B.)
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
- Department of Research, VA Greater Los Angeles Healthcare System, Los Angeles, CA 90073, USA
| | - Jun Gong
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; (H.M.); (R.A.); (S.B.); (S.J.P.); (A.E.H.); (N.A.B.)
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
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3
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Xia R, Peng HF, Zhang X, Zhang HS. Comprehensive review of amino acid transporters as therapeutic targets. Int J Biol Macromol 2024; 260:129646. [PMID: 38272411 DOI: 10.1016/j.ijbiomac.2024.129646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024]
Abstract
The solute carrier (SLC) family, with more than 400 membrane-bound proteins, facilitates the transport of a wide array of substrates such as nutrients, ions, metabolites, and drugs across biological membranes. Amino acid transporters (AATs) are membrane transport proteins that mediate transfer of amino acids into and out of cells or cellular organelles. AATs participate in many important physiological functions including nutrient supply, metabolic transformation, energy homeostasis, redox regulation, and neurological regulation. Several AATs have been found to significantly impact the progression of human malignancies, and dysregulation of AATs results in metabolic reprogramming affecting tumor growth and progression. However, current clinical therapies that directly target AATs have not been developed. The purpose of this review is to highlight the structural and functional diversity of AATs, the molecular mechanisms in human diseases such as tumors, kidney diseases, and emerging therapeutic strategies for targeting AATs.
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Affiliation(s)
- Ran Xia
- College of Chemistry and Life Science, Beijing University of Technology, Pingleyuan 100(#), District of Chaoyang, Beijing 100124, China
| | - Hai-Feng Peng
- College of Chemistry and Life Science, Beijing University of Technology, Pingleyuan 100(#), District of Chaoyang, Beijing 100124, China
| | - Xing Zhang
- College of Chemistry and Life Science, Beijing University of Technology, Pingleyuan 100(#), District of Chaoyang, Beijing 100124, China
| | - Hong-Sheng Zhang
- College of Chemistry and Life Science, Beijing University of Technology, Pingleyuan 100(#), District of Chaoyang, Beijing 100124, China.
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4
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Li S, Zeng H, Fan J, Wang F, Xu C, Li Y, Tu J, Nephew KP, Long X. Glutamine metabolism in breast cancer and possible therapeutic targets. Biochem Pharmacol 2023; 210:115464. [PMID: 36849062 DOI: 10.1016/j.bcp.2023.115464] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 02/27/2023]
Abstract
Cancer is characterized by metabolic reprogramming, which is a hot topic in tumor treatment research. Cancer cells alter metabolic pathways to promote their growth, and the common purpose of these altered metabolic pathways is to adapt the metabolic state to the uncontrolled proliferation of cancer cells. Most cancer cells in a state of nonhypoxia will increase the uptake of glucose and produce lactate, called the Warburg effect. Increased glucose consumption is used as a carbon source to support cell proliferation, including nucleotide, lipid and protein synthesis. In the Warburg effect, pyruvate dehydrogenase activity decreases, thereby disrupting the TCA cycle. In addition to glucose, glutamine is also an important nutrient for the growth and proliferation of cancer cells, an important carbon bank and nitrogen bank for the growth and proliferation of cancer cells, providing ribose, nonessential amino acids, citrate, and glycerin necessary for cancer cell growth and proliferation and compensating for the reduction in oxidative phosphorylation pathways in cancer cells caused by the Warburg effect. In human plasma, glutamine is the most abundant amino acid. Normal cells produce glutamine via glutamine synthase (GLS), but the glutamine synthesized by tumor cells is insufficient to meet their high growth needs, resulting in a "glutamine-dependent phenomenon." Most cancers have an increased glutamine demand, including breast cancer. Metabolic reprogramming not only enables tumor cells to maintain the reduction-oxidation (redox) balance and commit resources to biosynthesis but also establishes heterogeneous metabolic phenotypes of tumor cells that are distinct from those of nontumor cells. Thus, targeting the metabolic differences between tumor and nontumor cells may be a promising and novel anticancer strategy. Glutamine metabolic compartments have emerged as promising candidates, especially in TNBC and drug-resistant breast cancer. In this review, the latest discoveries of breast cancer and glutamine metabolism are discussed, novel treatment methods based on amino acid transporters and glutaminase are discussed, and the relationship between glutamine metabolism and breast cancer metastasis, drug resistance, tumor immunity and ferroptosis are explained, which provides new ideas for the clinical treatment of breast cancer.
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Affiliation(s)
- Shiqi Li
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hui Zeng
- Center of Clinical Laboratory, Hangzhou Ninth People's Hospital, Hangzhou, China
| | - Junli Fan
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Fubing Wang
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Chen Xu
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yirong Li
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jiancheng Tu
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Kenneth P Nephew
- Medical Sciences Program, Indiana University, Bloomington, IN, USA.
| | - Xinghua Long
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.
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5
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Torres SM, Carmo FP, Monteiro LC, Silva C, Andrade N, Martel F. Gallic acid markedly stimulates GLUT1-mediated glucose uptake by the AsPC-1 pancreatic cancer cell line. Can J Physiol Pharmacol 2023; 101:90-105. [PMID: 36688470 DOI: 10.1139/cjpp-2022-0260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Phenolic acids are recognized as chemopreventive and chemotherapeutic agents. Altered glucose and glutamine metabolism are recognized hallmarks of cancer cells. We aimed to test the influence of phenolic acids on glucose and glutamine cellular uptake by a breast (MCF-7) and a pancreatic (AsPC-1) cancer cell line. Several phenolic acids (caffeic, ferrulic, proctocatechuic, coumaric and gallic acid) affected 3H-glutamine and/or 3H-deoxy-d-glucose (3H-DG) uptake. Gallic acid (100 µM) caused a 3-fold increase in 3H-DG uptake by AsPC-1 cells, associated with a 3.7-fold increase in lactic acid production. Gallic acid stimulated GLUT1-mediated 3H-DG uptake and increased the affinity of this transporter for 3H-DG. We further verified that gallic acid does not change GLUT1 transcription rates and cellular redox state and that its effect does not involve PI3K, mTOR and MAP kinases and is not associated with a proproliferative effect. Gallic acid also increased 3H-DG uptake by MCF-7 cells, although less potently. Further investigation is necessary to elucidate the cellular pathways involved in this effect of gallic acid.
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Affiliation(s)
| | - Francisca P Carmo
- Faculty of Sciences, University of Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - Luís C Monteiro
- Faculty of Sciences, University of Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - Cláudia Silva
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal
| | - Nelson Andrade
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,REQUIMTE/LAQV, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Fátima Martel
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal
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6
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The anti-proliferative effect of β-carotene against a triple-negative breast cancer cell line is cancer cell-specific and JNK-dependent. PHARMANUTRITION 2022. [DOI: 10.1016/j.phanu.2022.100320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Zheng X, Ma H, Wang J, Huang M, Fu D, Qin L, Yin Q. Energy metabolism pathways in breast cancer progression: The reprogramming, crosstalk, and potential therapeutic targets. Transl Oncol 2022; 26:101534. [PMID: 36113343 PMCID: PMC9482139 DOI: 10.1016/j.tranon.2022.101534] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/14/2022] [Accepted: 09/04/2022] [Indexed: 11/19/2022] Open
Abstract
Breast cancer (BC) is a malignant tumor that seriously endangers health in women. BC, like other cancers, is accompanied by metabolic reprogramming. Among energy metabolism-related pathways, BC exhibits enhanced glycolysis, tricarboxylic acid (TCA) cycle, pentose phosphate pathway (PPP), glutamate metabolism, and fatty acid metabolism activities. These pathways facilitate the proliferation, growth and migration of BC cells. The progression of BC is closely related to the alterations in the activity or expression level of several metabolic enzymes, which are regulated by the intrinsic factors such as the key signaling and transcription factors. The metabolic reprogramming in the progression of BC is attributed to the aberrant expression of the signaling and transcription factors associated with the energy metabolism pathways. Understanding the metabolic mechanisms underlying the development of BC will provide a druggable potential for BC treatment and drug discovery.
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Affiliation(s)
- Xuewei Zheng
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Haodi Ma
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Jingjing Wang
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Mengjiao Huang
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Dongliao Fu
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Ling Qin
- Department of Hematology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China
| | - Qinan Yin
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China.
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8
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Xu F, Shi J, Qin X, Zheng Z, Chen M, Lin Z, Ye J, Li M. Hormone-Glutamine Metabolism: A Critical Regulatory Axis in Endocrine-Related Cancers. Int J Mol Sci 2022; 23:ijms231710086. [PMID: 36077501 PMCID: PMC9456462 DOI: 10.3390/ijms231710086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/30/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
The endocrine-related cancers and hormones are undoubtedly highly interconnected. How hormones support or repress tumor induction and progression has been extensively profiled. Furthermore, advances in understanding the role of glutamine metabolism in mediating tumorigenesis and development, coupled with these in-depth studies on hormone (e.g., estrogen, progesterone, androgen, prostaglandin, thyroid hormone, and insulin) regulation of glutamine metabolism, have led us to think about the relationship between these three factors, which remains to be elucidated. Accordingly, in this review, we present an updated overview of glutamine metabolism traits and its influence on endocrine oncology, as well as its upstream hormonal regulation. More importantly, this hormone/glutamine metabolism axis may help in the discovery of novel therapeutic strategies for endocrine-related cancer.
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Affiliation(s)
- Fengyuan Xu
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jialu Shi
- Department of Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai 200010, China
| | - Xueyun Qin
- Laboratory for Reproductive Immunology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai 200080, China
| | - Zimeng Zheng
- Laboratory for Reproductive Immunology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai 200080, China
| | - Min Chen
- Laboratory for Reproductive Immunology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai 200080, China
| | - Zhi Lin
- Department of Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai 200010, China
| | - Jiangfeng Ye
- Institute for Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore 138632, Singapore
| | - Mingqing Li
- Laboratory for Reproductive Immunology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai 200080, China
- NHC Key Lab. of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai 201203, China
- Correspondence:
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Silva C, Andrade N, Guimarães JT, Cardoso E, Meireles C, Pinto V, Paiva J, Martel F. The pro-proliferative effect of insulin in human breast epithelial DMBA-transformed and non-transformed cell lines is PI3K-, mTOR- and GLUT1-dependent. Cell Biochem Funct 2022; 40:127-137. [PMID: 35014047 DOI: 10.1002/cbf.3681] [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: 10/13/2021] [Accepted: 12/03/2021] [Indexed: 11/06/2022]
Abstract
Type 2 diabetes mellitus (T2DM) is linked to an increased risk of breast cancer. We aimed to investigate how T2DM-associated characteristics (high levels of glucose, insulin, leptin, inflammatory mediators and oxidative stress) influence breast cancer carcinogenesis, in DMBA-treated (MCF-12ADMBA ) and non-treated breast epithelial (MCF-12A) cell lines. Insulin (50 nM) promotes cell proliferation, 3 H-DG uptake and lactic acid production in both cell lines. The stimulatory effects of insulin upon cell proliferation and 3 H-DG uptake were hampered by rapamycin, LY294001 and BAY-876, in both cell lines. In conclusion, hyperinsulinemia, one important characteristic of T2DM, contributes to the initiation of breast cancer by a PI3K- and mTOR-dependent mechanism involving increased GLUT1-mediated glucose uptake. SIGNIFICANCE: The pro-proliferative effect of insulin in human breast epithelial DMBA-transformed and non-transformed cell lines is PI3K-, mTOR- and GLUT1-dependent.
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Affiliation(s)
- Cláudia Silva
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal
| | - Nelson Andrade
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal.,REQUIMTE/LAQV, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - João Tiago Guimarães
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Department of Clinical Pathology, São João Hospital Centre, Porto, Portugal.,Institute of Public Health, University of Porto, Porto, Portugal
| | - Emília Cardoso
- Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal
| | - Catarina Meireles
- Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal
| | - Vanessa Pinto
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,iLoF, Intelligent Lab on Fiber, Limited, Oxford, UK
| | - Joana Paiva
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,iLoF, Intelligent Lab on Fiber, Limited, Oxford, UK.,Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - Fátima Martel
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal
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