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Aguiar APN, Mendonça PDS, Lima Junior RCP, Mota AGDM, Wong DVT, Oliveira RTGD, Ribeiro-Júnior HL, Pinheiro RF, Magalhães SMM. The role of adiposity, adipokines and polymorphisms of leptin and adiponectin in myelodysplastic syndromes. Br J Nutr 2024; 131:737-748. [PMID: 37855224 DOI: 10.1017/s0007114523002283] [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: 10/20/2023]
Abstract
The aim of the present study was to investigate the relationship between leptin and adiponectin gene polymorphisms, circulating levels of leptin and adiponectin, adiposity and clinical markers in patients with myelodysplastic syndrome (MDS). This cross-sectional study was conducted with 102 adults and elderly MDS patients and 102 age- and sex-matched controls. Clinical characteristics, co-morbidities, anthropometric data, laboratory evaluation and genetic analysis (polymorphisms -2548G > A/rs7799039 of the LEP gene and +276G > T/rs1501299 of the ADIPOQ gene) were investigated. Serum leptin was higher and adiponectin lower in MDS when compared with controls. There was a significant positive correlation between serum leptin levels and BMI (r = 0·264, P = 0·025), waist circumference (r = 0·235, P = 0·047), body fat percentage (BF %) (r = 0·373, P = 0·001) and the fat mass index (FMI) (r = 0·371, P < 0·001). A lower mean adiponectin was found among patients with high BF %, higher visceral adiposity index and metabolic syndrome. A significant association was found between the AA genotype (mutant) of the LEP polymorphism rs7799039 and male sex and blast excess (≥ 5 %). In addition, a significant association was observed between the TT genotype (mutant) of the ADIPOQ rs1501299 polymorphism and Fe overload. These results demonstrate the importance of a comprehensive and systematic evaluation in patients with MDS in order to identify and control negative factors not related to the disease at an early stage.
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Affiliation(s)
- Ana Patrícia Nogueira Aguiar
- Cancer Cytogenomic Laboratory, Federal University of Ceará, Fortaleza, CE60430-275, Brazil
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Priscila da Silva Mendonça
- Cancer Cytogenomic Laboratory, Federal University of Ceará, Fortaleza, CE60430-275, Brazil
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
- University Hospital Walter Cantidio, Brazilian Company of Hospital Services (EBSERH), Fortaleza, CE, Brazil
| | - Roberto Cesar Pereira Lima Junior
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
- Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Anacelia Gomes de Matos Mota
- Cancer Cytogenomic Laboratory, Federal University of Ceará, Fortaleza, CE60430-275, Brazil
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Deysi Viviana Tenazoa Wong
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
- Department of Pathology and Forensic Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Roberta Tatiane Germano de Oliveira
- Cancer Cytogenomic Laboratory, Federal University of Ceará, Fortaleza, CE60430-275, Brazil
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Howard Lopes Ribeiro-Júnior
- Cancer Cytogenomic Laboratory, Federal University of Ceará, Fortaleza, CE60430-275, Brazil
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Ronald Feitosa Pinheiro
- Cancer Cytogenomic Laboratory, Federal University of Ceará, Fortaleza, CE60430-275, Brazil
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
- Post-Graduate Program of Pathology, Federal University of Ceará, Fortaleza, CE, Brazil
- Department of Clinical Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
- Post-graduate Program in Medical Science, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Silvia Maria Meira Magalhães
- Cancer Cytogenomic Laboratory, Federal University of Ceará, Fortaleza, CE60430-275, Brazil
- Center for Research and Drug Development (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
- Department of Clinical Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
- Post-graduate Program in Medical Science, Federal University of Ceará, Fortaleza, CE, Brazil
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Trinh T, Broxmeyer HE. Role for Leptin and Leptin Receptors in Stem Cells During Health and Diseases. Stem Cell Rev Rep 2021; 17:511-522. [PMID: 33598894 PMCID: PMC7889057 DOI: 10.1007/s12015-021-10132-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/31/2021] [Indexed: 12/14/2022]
Abstract
Hematopoietic stem cells (HSCs) give rise to all blood and immune cells in the body. These rare cells reside in the hypoxic niche of the bone marrow (BM) where they are subjected to a complex network of regulatory factors including cellular and molecular components. To sustain hematopoiesis over the lifetime of an individual, HSCs maintain distinctive metabolic programs, and in recent years nutritional factors have been increasingly recognized as critical regulators of HSC numbers and functions. Leptin (LEP), a neuroendocrine messenger, and its receptor (LEPR) are well-known for their immunomodulatory and energy balancing effects; yet, how LEP/LEPR signaling plays a role in hematopoiesis is under-appreciated. In this review, we summarize and highlight recent work that demonstrated involvement of LEP/LEPR in hematopoiesis under steady state or stress-associated situations as well as in pathological conditions such as cardiovascular diseases and malignancies. Although the field is only in its infancy, these studies suggest evidence of potential clinical applications and proof-of-principle for more in-depth future research.
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Affiliation(s)
- Thao Trinh
- Departments of Microbiology/Immunology, Indiana University School of Medicine, 950 West Walnut Street, Bldg. R2, Room 302, Indianapolis, IN, 46202-5121, USA
| | - Hal E Broxmeyer
- Departments of Microbiology/Immunology, Indiana University School of Medicine, 950 West Walnut Street, Bldg. R2, Room 302, Indianapolis, IN, 46202-5121, USA.
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Abstract
Leptin is an adipose-derived cytokine that has an important role in bodyweight homeostasis and energy balance. There are a number of studies which have suggested that leptin and its receptors dysregulation play a critical role in the development of malignancies including hematological malignancies, mainly via activation of the JAK/STAT pathway which regulates downstream signaling pathways such as PI3K/AKT signaling and ERK1/2. In this review, current understandings of leptin/leptin receptors mediated pathogenesis in various lymphoid malignancies are described. Blocking of the leptin receptor might be a unique therapeutic approach for many hematological malignancies.
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Affiliation(s)
- Shahab Uddin
- a Translational Research Institute, Academic Health System, Hamad Medical Corporation , Doha , Qatar
| | - Ramzi M Mohammad
- a Translational Research Institute, Academic Health System, Hamad Medical Corporation , Doha , Qatar
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Gorska E, Popko K, Wasik M. Leptin receptor in childhood acute leukemias. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 756:155-61. [PMID: 22836631 DOI: 10.1007/978-94-007-4549-0_20] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Ob-R receptor is encoded by db gene and belongs to class I cytokine receptors family. Its expression was observed in hematopoietic CD34+ stem cells, erythropoietic, myeloid and lymphoblastic lineages cell lines and in human leukemic blast cells in lymphomas, acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL), and chronic myeloid leukemia (CML). The studies on human bone marrow cells show that JAK/STAT pathway plays a substantial role in signal transduction in young bone marrow cells. The aim of the study was to examine the relationship between leptin receptor expression and the proliferation of neoplastic hematopoietic cells in bone marrow. The study was performed in a total of 57 children of both sexes aged 3 months to 16 years. A group of 46 patients with acute leukemia involved 25 children with ALLB, 11 children with ALLT and 10 children with ANNL. The control group consisted of 11 non-obese children with non-malignant hematological disturbances. The tests were performed on bone marrow samples. The assessments of membrane expression of Ob-R and the antigens determining the phenotype of bone marrow cells were performed using a flow cytometry method. In acute lymphoblastic leukemia, a significant decrease of Ob-R expression on leukemic blasts was observed in comparison with respective populations of normal bone marrow cells. Also in progenitor cells populations a significant decrease of CD34+Ob-R+w ALLT and ALLB was observed in comparison with the cells from normal bone marrow. No statistically significant differences in the percentage of Ob-R+ cells in ANNL bone marrow and in control bone marrow were observed.
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Affiliation(s)
- E Gorska
- Department of Laboratory Diagnostics and Clinical Immunology of Developmental Age, Medical University of Warsaw, Warsaw, Poland.
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Aberrant expressions of leptin and adiponectin receptor isoforms in chronic myeloid leukemia patients. Cytokine 2011; 57:61-7. [PMID: 22082804 DOI: 10.1016/j.cyto.2011.10.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 09/07/2011] [Accepted: 10/16/2011] [Indexed: 11/24/2022]
Abstract
BACKGROUND Leptin and adiponectin receptors mediate the role of leptin in stimulating the growth of leukemic cells and the protective function of adiponectin undertaken in several malignancies such as leukemia. In this study, we investigated the involvement of the expression of leptin and adiponectin receptors in chronic myeloid leukemia (CML) pathogenesis. METHODS The expression of leptin receptor isoforms, OB-Rt, OB-Ra, and OB-Rb, and the expression of adiponectin receptors, AdipoR1 and AdipoR2, were measured as mRNA levels in two CML cell lines (K562 and Meg-01) and 20 CML patients and 24 healthy controls by using RT-PCR. RESULTS OB-Rt and OB-Ra isoforms expression of the leptin receptors were found to be significantly lower in Meg-01 cell lines than K562 cells. All leptin receptors were downregulated in CML patients and more particularly OB-Rb level was found to be undetectably low in normal PBMC as well as in CML patients. AdipoR1 expression level was higher in Meg-01 than in K562, whereas AdipoR2 level was found to be unchanged in both cell lines. Interestingly, while AdipoR1 expression increased in CML patients, AdipoR2 decreased. Moreover, imatinib therapy did not affect both leptin and adiponectin isoform expressions. CONCLUSION While the decrease in leptin receptor levels in CML patients was confirmed, the increase in AdipoR1 levels and relevant decrease in AdipoR2 levels depicted their possible involvement in CML pathogenesis. This suggests different functions of adiponectin receptors in CML development.
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Otvos L, Shao WH, Vanniasinghe AS, Amon MA, Holub MC, Kovalszky I, Wade JD, Doll M, Cohen PL, Manolios N, Surmacz E. Toward understanding the role of leptin and leptin receptor antagonism in preclinical models of rheumatoid arthritis. Peptides 2011; 32:1567-74. [PMID: 21723351 DOI: 10.1016/j.peptides.2011.06.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 06/16/2011] [Accepted: 06/16/2011] [Indexed: 01/20/2023]
Abstract
A potential link between obesity, circulating leptin levels and autoimmune disease symptoms suggests that targeting the leptin receptor (ObR) might be a viable novel strategy to combat rheumatoid arthritis (RA). However, studies in animal models and evaluation of clinical cases did not provide clear view on leptin's involvement in RA. To validate ObR as RA target, we used our peptide-based ObR agonists and antagonist in different in vitro and in vivo models of the disease. In human peripheral blood mononuclear cells, leptin and its agonist fragment, desI(2)-E1/Aca, moderately induced constitutive activation of a major proinflammatory transcription factor, NF-κB, while the ObR antagonist peptide Allo-aca inhibited the process. Leptin administration itself did not induce arthritis in rats, but worsened the clinical condition of mice given K/BxN serum transfer arthritis. Simultaneous administration of Allo-aca reduced leptin-dependent increase in disease severity by more than 50%, but the antagonist was ineffective when injected with a 3-day delay. In rats inflicted with mild adjuvant-induced arthritis, both leptin and Allo-aca reduced the extent of joint swelling and the number of arthritic joints. In a more aggressive disease stage, Allo-aca decreased the number of arthritic joints in a dose-dependent manner but did not affect other arthritis markers. In summary, leptin exerts diverse effects on RA depending on the experimental model. This might reflect the heterogeneous character of RA, which is differently impacted by leptin and is unmasked by ObR antagonism. Nevertheless, the results suggest that ObR antagonists might become useful therapeutics in leptin-sensitive early stages of RA.
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Affiliation(s)
- Laszlo Otvos
- Department of Biology, Temple University, Philadelphia, PA 19122, USA.
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Mouzaki A, Panagoulias I, Dervilli Z, Zolota V, Spadidea P, Rodi M, Panitsas FP, Lagadinou E, de Lastic AL, Georgakopoulos T. Expression patterns of leptin receptor (OB-R) isoforms and direct in vitro effects of recombinant leptin on OB-R, leptin expression and cytokine secretion by human hematopoietic malignant cells. Cytokine 2009; 48:203-11. [PMID: 19665393 DOI: 10.1016/j.cyto.2009.07.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Revised: 05/27/2009] [Accepted: 07/08/2009] [Indexed: 01/02/2023]
Abstract
Several studies have implicated leptin in the pathophysiology of neoplasias. We investigated the direct effect of leptin on malignant hematopoietic tissue that included: primary acute myeloid leukemia (AML) cells, leukemic cell lines and bone marrow biopsies from multiple myeloma (MM) patients. PBMC, T-cells, B-cells and monocytes from healthy subjects served as controls. We defined the patterns of OB-R isoform expression in AML cells and leukemic cell lines in comparison to control cells by RT-PCR. rLeptin upregulated the expression of OB-R and endogenous leptin in AML blasts and certain cell lines but not in control cells. Cytometric Bead Array analysis of pro- and anti-inflammatory cytokines showed that rleptin upregulates IL-6 secretion by AML cells, various cytokines by the leukemic cell lines tested and IL-10 secretion by control PBMC, contributed by monocytes. Western immunoblotting revealed that the effect of rleptin was independent of JAK-2/phospho-JAK-2 protein levels. Finally, MM biopsies stained positive for leptin and, to a lesser extend, OB-R. Immunoreactivity was confined mostly to the nucleus of the myeloma cells. Normal myelocytes, promyelocytes and megakaryocytes stained weakly positive, and erythroid cells were constantly negative. We propose that the leptin/OB-R system is strongly and directly involved in supporting the growth of hematopoietic malignancies.
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Affiliation(s)
- Athanasia Mouzaki
- Division of Hematology, Department of Internal Medicine, Medical School, University of Patras, Patras, Greece.
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Park SH, Jung MH, Chung NG, Suh BK, Lee BC. Serum ghrelin and leptin concentrations in children with cancer : comparisons with normal children. KOREAN JOURNAL OF PEDIATRICS 2007. [DOI: 10.3345/kjp.2007.50.9.905] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- So Hyun Park
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Min Ho Jung
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Nac Gyun Chung
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Byung-Kyu Suh
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Byung Churl Lee
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Roela RA, Carraro DM, Brentani HP, Kaiano JHL, Simão DF, Guarnieiro R, Lopes LF, Borojevic R, Brentani MM. Gene stage-specific expression in the microenvironment of pediatric myelodysplastic syndromes. Leuk Res 2006; 31:579-89. [PMID: 17092558 DOI: 10.1016/j.leukres.2006.10.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2006] [Revised: 09/11/2006] [Accepted: 10/10/2006] [Indexed: 01/19/2023]
Abstract
Using cDNA microarray assays we have observed a clear difference in the gene expression pattern between bone marrow stromal cells obtained from healthy children (CT) and from pediatric patients with either myelodysplastic syndromes (MDS) or acute myeloid leukemia (AML) associated with MDS (MDS-AML). The global gene function profiling analysis indicated that in the pediatric MDS microenvironment the disease stages may be characterized mainly by underexpression of genes associated with biological processes such as transport. Furthermore, a subset of downregulated genes related to endocytosis and protein secretion was able to discriminate MDS from MDS-AML.
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Affiliation(s)
- Rosimeire A Roela
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Radiologia (LIM24), Av Dr Arnaldo 455 sala 4112, São Paulo 01246-903, Brazil
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