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Bennin D, Hartery SA, Kirby BJ, Maekawa AS, St-Arnaud R, Kovacs CS. Loss of 24-hydroxylated catabolism increases calcitriol and fibroblast growth factor 23 and alters calcium and phosphate metabolism in fetal mice. JBMR Plus 2024; 8:ziae012. [PMID: 38577520 PMCID: PMC10993470 DOI: 10.1093/jbmrpl/ziae012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 01/23/2024] [Accepted: 01/18/2024] [Indexed: 04/06/2024] Open
Abstract
Calcitriol circulates at low levels in normal human and rodent fetuses, in part due to increased 24-hydroxylation of calcitriol and 25-hydroxyvitamin D by 24-hydroxylase (CYP24A1). Inactivating mutations of CYP24A1 cause high postnatal levels of calcitriol and the human condition of infantile hypercalcemia type 1, but whether the fetus is disturbed by the loss of CYP24A1 is unknown. We hypothesized that loss of Cyp24a1 in fetal mice will cause high calcitriol, hypercalcemia, and increased placental calcium transport. The Cyp24a1+/- mice were mated to create pregnancies with wildtype, Cyp24a1+/-, and Cyp24a1 null fetuses. The null fetuses were hypercalcemic, modestly hypophosphatemic (compared to Cyp24a1+/- fetuses only), with 3.5-fold increased calcitriol, 4-fold increased fibroblast growth factor 23 (FGF23), and unchanged parathyroid hormone. The quantitative RT-PCR confirmed the absence of Cyp24a1 and 2-fold increases in S100g, sodium-calcium exchanger type 1, and calcium-sensing receptor in null placentas but not in fetal kidneys; these changes predicted an increase in placental calcium transport. However, placental 45Ca and 32P transport were unchanged in null fetuses. Fetal ash weight and mineral content, placental weight, crown-rump length, and skeletal morphology did not differ among the genotypes. Serum procollagen 1 intact N-terminal propeptide and bone expression of sclerostin and Blgap were reduced while calcitonin receptor was increased in nulls. In conclusion, loss of Cyp24a1 in fetal mice causes hypercalcemia, modest hypophosphatemia, and increased FGF23, but no alteration in skeletal development. Reduced incorporation of calcium into bone may contribute to the hypercalcemia without causing a detectable decrease in the skeletal mineral content. The results predict that human fetuses bearing homozygous or compound heterozygous inactivating mutations of CYP24A1 will also be hypercalcemic in utero but with normal skeletal development.
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Affiliation(s)
- David Bennin
- Faculty of Medicine – Endocrinology, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, A1B 3V6, Canada
| | - Sarah A Hartery
- Faculty of Medicine – Endocrinology, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, A1B 3V6, Canada
| | - Beth J Kirby
- Faculty of Medicine – Endocrinology, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, A1B 3V6, Canada
| | - Alexandre S Maekawa
- Faculty of Medicine – Endocrinology, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, A1B 3V6, Canada
| | - René St-Arnaud
- Shriners Hospitals for Children–Canada and McGill University, Montréal, Quebec, H4A 0A9, Canada
| | - Christopher S Kovacs
- Faculty of Medicine – Endocrinology, Memorial University of Newfoundland, St. John’s, Newfoundland and Labrador, A1B 3V6, Canada
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Peterson A, Bennin D, Lasarev M, Chini J, Beebe DJ, Huttenlocher A. Neutrophil motility is regulated by both cell intrinsic and endothelial cell ARPC1B. J Cell Sci 2024; 137:jcs261774. [PMID: 38224139 PMCID: PMC10911274 DOI: 10.1242/jcs.261774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/08/2024] [Indexed: 01/16/2024] Open
Abstract
Neutrophil-directed motility is necessary for host defense, but its dysregulation can also cause collateral tissue damage. Actinopathies are monogenic disorders that affect the actin cytoskeleton and lead to immune dysregulation. Deficiency in ARPC1B, a component of the Arp2/3 complex, results in vascular neutrophilic inflammation; however, the mechanism remains unclear. Here, we generated human induced pluripotent stem cell (iPSC)-derived neutrophils (denoted iNeutrophils) that are deficient in ARPC1B and show impaired migration and a switch from forming pseudopodia to forming elongated filopodia. We show, using a blood vessel on a chip model, that primary human neutrophils have impaired movement across an endothelium deficient in APRC1B. We also show that the combined deficiency of ARPC1B in iNeutrophils and endothelium results in further reduction in neutrophil migration. Taken together, these results suggest that ARPC1B in endothelium is sufficient to drive neutrophil behavior. Furthermore, the findings provide support for using the iPSC system to understand human neutrophil biology and model disease in a genetically tractable system.
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Affiliation(s)
- Ashley Peterson
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA
- Comparative Biomedical Sciences Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - David Bennin
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Michael Lasarev
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI 53706, USA
| | - Julia Chini
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - David J. Beebe
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53706, USA
- Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Anna Huttenlocher
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI 53706, USA
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Schrope JH, Horn A, Farooqui M, Lazorchak K, Li J, Tinnen C, Stevens JJ, Bennin D, Robertson T, Juang T, Li C, Huttenlocher A, Beebe DJ. Liquid-liquid interfaces enable tunable cell confinement to recapitulate surrounding tissue deformations during neutrophil interstitial migration in vivo. bioRxiv 2023:2023.06.14.544898. [PMID: 38106211 PMCID: PMC10723256 DOI: 10.1101/2023.06.14.544898] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Cell migration is regulated by an interplay between both chemical and mechanical cues. Immune cells navigate through interstitial spaces and generate forces to deform surrounding cells, which in turn exert opposing pressures that regulate cell morphology and motility mechanisms. Current in vitro systems to study confined cell migration largely utilize rigid materials orders of magnitude stiffer than surrounding cells, limiting insights into how these local physical interactions regulate interstitial cell motility. Here, we first characterize mechanical interactions between neutrophils and surrounding cells in larval zebrafish and subsequently engineer in vitro migration channels bound by a deformable liquid-liquid interface that responds to cell generated pressures yielding a gradient of confinement across the length of a single cell. Tuning confining pressure gradients replicates mechanical interactions with surrounding cells during interstitial migration in vivo . We find that neutrophils favor a bleb-based mechanism of force generation to deform a barrier applying cell-scale confining forces. This work introduces a biomimetic material interface that enables new avenues of exploring the influence of mechanical forces on cell migration.
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4
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de Jesus AA, Chen G, Yang D, Brdicka T, Ruth NM, Bennin D, Cebecauerova D, Malcova H, Freeman H, Martin N, Svojgr K, Passo MH, Bhuyan F, Alehashemi S, Rastegar AT, Uss K, Kardava L, Marrero B, Duric I, Omoyinmi E, Peldova P, Lee CCR, Kleiner DE, Hadigan CM, Hewitt SM, Pittaluga S, Carmona-Rivera C, Calvo KR, Shah N, Balascakova M, Fink DL, Kotalova R, Parackova Z, Peterkova L, Kuzilkova D, Campr V, Sramkova L, Biancotto A, Brooks SR, Manes C, Meffre E, Harper RL, Kuehn H, Kaplan MJ, Brogan P, Rosenzweig SD, Merchant M, Deng Z, Huttenlocher A, Moir SL, Kuhns DB, Boehm M, Skvarova Kramarzova K, Goldbach-Mansky R. Constitutively active Lyn kinase causes a cutaneous small vessel vasculitis and liver fibrosis syndrome. Nat Commun 2023; 14:1502. [PMID: 36932076 PMCID: PMC10022554 DOI: 10.1038/s41467-023-36941-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 02/22/2023] [Indexed: 03/19/2023] Open
Abstract
Neutrophilic inflammation is a hallmark of many monogenic autoinflammatory diseases; pathomechanisms that regulate extravasation of damaging immune cells into surrounding tissues are poorly understood. Here we identified three unrelated boys with perinatal-onset of neutrophilic cutaneous small vessel vasculitis and systemic inflammation. Two patients developed liver fibrosis in their first year of life. Next-generation sequencing identified two de novo truncating variants in the Src-family tyrosine kinase, LYN, p.Y508*, p.Q507* and a de novo missense variant, p.Y508F, that result in constitutive activation of Lyn kinase. Functional studies revealed increased expression of ICAM-1 on induced patient-derived endothelial cells (iECs) and of β2-integrins on patient neutrophils that increase neutrophil adhesion and vascular transendothelial migration (TEM). Treatment with TNF inhibition improved systemic inflammation; and liver fibrosis resolved on treatment with the Src kinase inhibitor dasatinib. Our findings reveal a critical role for Lyn kinase in modulating inflammatory signals, regulating microvascular permeability and neutrophil recruitment, and in promoting hepatic fibrosis.
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Affiliation(s)
- Adriana A de Jesus
- Translational Autoinflammatory Diseases Section (TADS), Laboratory of Clinical Immunology and Microbiology (LCIM), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Guibin Chen
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Dan Yang
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Tomas Brdicka
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Natasha M Ruth
- Medical University of South Carolina, Charleston, SC, USA
| | - David Bennin
- Departments of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Dita Cebecauerova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | - Hana Malcova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | | | - Neil Martin
- Royal Hospital for Children, Glasgow, Scotland
| | - Karel Svojgr
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | - Murray H Passo
- Medical University of South Carolina, Charleston, SC, USA
| | - Farzana Bhuyan
- Translational Autoinflammatory Diseases Section (TADS), Laboratory of Clinical Immunology and Microbiology (LCIM), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Sara Alehashemi
- Translational Autoinflammatory Diseases Section (TADS), Laboratory of Clinical Immunology and Microbiology (LCIM), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Andre T Rastegar
- Translational Autoinflammatory Diseases Section (TADS), Laboratory of Clinical Immunology and Microbiology (LCIM), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Katsiaryna Uss
- Translational Autoinflammatory Diseases Section (TADS), Laboratory of Clinical Immunology and Microbiology (LCIM), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Lela Kardava
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Bernadette Marrero
- Translational Autoinflammatory Diseases Section (TADS), Laboratory of Clinical Immunology and Microbiology (LCIM), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Iris Duric
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Ebun Omoyinmi
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Petra Peldova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | | | - David E Kleiner
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - Stephen M Hewitt
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Stefania Pittaluga
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Carmelo Carmona-Rivera
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | | | - Nirali Shah
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Miroslava Balascakova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | - Danielle L Fink
- Collaborative Clinical Research Branch/Neutrophil Monitoring Laboratory, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD, USA
| | - Radana Kotalova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | - Zuzana Parackova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | - Lucie Peterkova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | - Daniela Kuzilkova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | - Vit Campr
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | - Lucie Sramkova
- Second Faculty of Medicine, Charles University/University Hospital Motol, Prague, Czech Republic
| | | | - Stephen R Brooks
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | | | | | - Rebecca L Harper
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Hyesun Kuehn
- Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Mariana J Kaplan
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Paul Brogan
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | | | - Melinda Merchant
- AstraZeneca Research Based Biopharmaceutical Company, Waltham, MA, USA
| | - Zuoming Deng
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Anna Huttenlocher
- Departments of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Susan L Moir
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Douglas B Kuhns
- Collaborative Clinical Research Branch/Neutrophil Monitoring Laboratory, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD, USA
| | - Manfred Boehm
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - Raphaela Goldbach-Mansky
- Translational Autoinflammatory Diseases Section (TADS), Laboratory of Clinical Immunology and Microbiology (LCIM), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
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Giese M, Bennin D, Johnson C, Klemm L, Yung HS, Nett J, Slukvin I, Huttenlocher A. Engineering iPSC-derived neutrophils to fight infection. The Journal of Immunology 2022. [DOI: 10.4049/jimmunol.208.supp.50.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Abstract
Neutrophils are the initial responders to infection and injury and are critical for host survival. Immunocompromised patients are prone to recurrent bacterial and fungal infections which may require granulocyte transfusion. However, these transfusions have minimal efficacy as donor material is limited and highly heterogeneous. Induced pluripotent stem cells (iPSCs) are a promising option for generating a defined therapeutic that can improve patient outcomes. Therefore, we aimed to engineer iPSC-derived neutrophils to improve recruitment and antimicrobial function. Prior research in the field has shown that iPSC-derived neutrophils have limited function compared to primary human neutrophils, likely due to inhibitory signaling pathways. To generate iPSC-derived neutrophils with enhanced capacity, we utilized CRISPR/Cas9 to delete the protein tyrosine phosphatase 1B (PTP1B), a negative regulator of neutrophil function. PTP1B−/− neutrophils displayed increased cellular migration and inflammatory cytokine signaling in response to bacterial stimuli versus WT cells. Additionally, upon selection of cells with mature neutrophil markers, these PTP1B−/− neutrophils show similar fungal killing ability and improved phagocytosis compared to WT. Thus, these data indicate that deletion of PTP1B can improve the antimicrobial function of iPSC neutrophils and highlights the value of our system for genetically engineering iPSC-derived neutrophils.
Supported by grants from the NIH (5R01AI134749-03 and Microbes in Health and Disease T32 NIAID: T32AI055397)
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Affiliation(s)
- Morgan Giese
- 1Medical Microbiology and Immunology, university of wisconsin-madison
| | - David Bennin
- 1Medical Microbiology and Immunology, university of wisconsin-madison
| | - Chad Johnson
- 1Medical Microbiology and Immunology, university of wisconsin-madison
| | - Lucas Klemm
- 1Medical Microbiology and Immunology, university of wisconsin-madison
| | - Ho Sun Yung
- 2Pathology and Laboratory Medicine, university of wisconsin-madison
| | - Jeniel Nett
- 3Department of Medicine, university of wisconsin-madison
| | - Igor Slukvin
- 2Pathology and Laboratory Medicine, university of wisconsin-madison
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Korte BG, Giese MA, Ramakrishnan G, Ma S, Bennin D, Rindy J, Dewey CN, Huttenlocher A. Cell Type-Specific Transcriptome Profiling Reveals a Role for Thioredoxin During Tumor Initiation. Front Immunol 2022; 13:818893. [PMID: 35250998 PMCID: PMC8891495 DOI: 10.3389/fimmu.2022.818893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 01/25/2022] [Indexed: 01/27/2023] Open
Abstract
Neutrophils in the tumor microenvironment exhibit altered functions. However, the changes in neutrophil behavior during tumor initiation remain unclear. Here we used Translating Ribosomal Affinity Purification (TRAP) and RNA sequencing to identify neutrophil, macrophage and transformed epithelial cell transcriptional changes induced by oncogenic RasG12V in larval zebrafish. We found that transformed epithelial cells and neutrophils, but not macrophages, had significant changes in gene expression in larval zebrafish. Interestingly, neutrophils had more significantly down-regulated genes, whereas gene expression was primarily upregulated in transformed epithelial cells. The antioxidant, thioredoxin (txn), a small thiol that regulates reduction-oxidation (redox) balance, was upregulated in transformed keratinocytes and neutrophils in response to oncogenic Ras. To determine the role of thioredoxin during tumor initiation, we generated a zebrafish thioredoxin mutant. We observed an increase in wound-induced reactive oxygen species signaling and neutrophil recruitment in thioredoxin-deficient zebrafish. Transformed keratinocytes also showed increased proliferation and reduced apoptosis in thioredoxin-deficient larvae. Using live imaging, we visualized neutrophil behavior near transformed cells and found increased neutrophil recruitment and altered motility dynamics. Finally, in the absence of neutrophils, transformed keratinocytes no longer exhibited increased proliferation in thioredoxin mutants. Taken together, our findings demonstrate that tumor initiation induces changes in neutrophil gene expression and behavior that can impact proliferation of transformed cells in the early tumor microenvironment.
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Affiliation(s)
- Benjamin G. Korte
- Department of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin – Madison, Madison, WI, United States,Cancer Biology Graduate Program, University of Wisconsin – Madison, Madison, WI, United States
| | - Morgan A. Giese
- Department of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin – Madison, Madison, WI, United States,Cellular and Molecular Biology Graduate Program, University of Wisconsin – Madison, Madison, WI, United States
| | - Gayathri Ramakrishnan
- Department of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin – Madison, Madison, WI, United States,Cancer Biology Graduate Program, University of Wisconsin – Madison, Madison, WI, United States
| | - Stella Ma
- Department of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin – Madison, Madison, WI, United States
| | - David Bennin
- Department of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin – Madison, Madison, WI, United States
| | - Julie Rindy
- Department of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin – Madison, Madison, WI, United States
| | - Colin N. Dewey
- Department of Biostatistics and Medical Informatics, University of Wisconsin – Madison, Madison, WI, United States
| | - Anna Huttenlocher
- Department of Pediatrics and Medical Microbiology and Immunology, University of Wisconsin – Madison, Madison, WI, United States,Department of Pediatrics, University of Wisconsin – Madison, Madison, WI, United States,*Correspondence: Anna Huttenlocher,
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7
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Adu P, Bennin D, Edzie RA, Owusu-Poku AG, Hakeem TU, Baba GO, Edzie EKM. Depleted iron stores in voluntary blood donors: A three-center cross-sectional study in Ghana. Asian J Transfus Sci 2021; 14:149-157. [PMID: 33767542 PMCID: PMC7983149 DOI: 10.4103/ajts.ajts_112_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 04/14/2019] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Blood donation is frequently associated with iron deficiency. Although iron deficiency is endemic in Ghana, there is a scarcity of data on iron stores in blood donors to inform donor recruitment policy. This study determined the prevalence and factors predictive of depleted iron stores in blood donors. MATERIALS AND METHODS This cross-sectional study recruited 287 blood donors from three regions in Ghana. Venous blood samples were collected for estimation of C-reactive protein, full blood count, and serum ferritin. Questionnaires were used to capture sociodemographic data. Data were analyzed using SPSS or GraphPad Prism. Multivariate logistic regression and receiver operator characteristics (ROC) analyses were, respectively, used to determine the factors associated with depleted iron stores or sensitivities of calculated red cell indices in predicting depleted iron stores in the participants. RESULTS Whereas 27.4% of the blood donors had depleted iron stores (ferritin <15 ng/dL), only 11% took iron supplementation. While ferritin levels significantly increased with age, 49.5% of the blood donors were aged 20-29 years. Whereas 39.5% of participants had never donated blood, 24.9% had donated ≥3 units of whole blood in the past 2 years. Female (adjusted odds ratio [aOR]: 7.407, P = 0.005), multiple previous donations (1-2 [aOR: 1.846, P = 0.431]; ≥3 [aOR: 6.297, P = 0.016]), no iron supplementation (aOR: 17.553, P = 0.078), or platelet count ≥150 × 109/L (aOR: 2.689, P = 0.354) significantly associated with iron depletion. ROC analyses showed that whereas mean cell hemoglobin (MCH) density (area under the curve [AUC]: 0.735, P < 0.01), MCH (AUC: 0.772, P < 0.01) or Shine and Lal (AUC: 0.736, P < 0.01) fairly predicted iron depletion, combined cell index (AUC: 0.660, P < 0.01) or Green and King (AUC: 0.603, P < 0.01) indices poorly predicted iron depletion. CONCLUSIONS More than quarter of voluntary blood donors suffers postdonation sideropenia. Calculated red cell indices should be investigated in different settings to validate usefulness in detecting iron depletion.
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Affiliation(s)
- Patrick Adu
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - David Bennin
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Richard Ato Edzie
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Ama Gyasiwaah Owusu-Poku
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Toniah Umar Hakeem
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Glory Obadiah Baba
- Department of Medical Laboratory Sciences, School of Allied Health Sciences, University of Cape Coast, Cape Coast, Ghana
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Majumder A, Brok-Volchanskaya V, Slukvin I, Bennin D, Huttenlocher A, Klemm L, Suknuntha K. 3106 – DIRECT INDUCTION OF HEMOGENIC ENDOTHELIUM AND MYELOID CELLS FROM HUMAN IPSCS USING ETV2 MODIFIED RNA. Exp Hematol 2020. [DOI: 10.1016/j.exphem.2020.09.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Schoen TJ, Rosowski EE, Knox BP, Bennin D, Keller NP, Huttenlocher A. Neutrophil phagocyte oxidase activity controls invasive fungal growth and inflammation in zebrafish. J Cell Sci 2019; 133:jcs.236539. [PMID: 31722976 DOI: 10.1242/jcs.236539] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/06/2019] [Indexed: 12/17/2022] Open
Abstract
Neutrophils are primary phagocytes of the innate immune system that generate reactive oxygen species (ROS) and mediate host defense. Deficient phagocyte NADPH oxidase (PHOX) function leads to chronic granulomatous disease (CGD) that is characterized by invasive infections, including those by the generally non-pathogenic fungus Aspergillus nidulans The role of neutrophil ROS in this specific host-pathogen interaction remains unclear. Here, we exploit the optical transparency of zebrafish to image the effects of neutrophil ROS on invasive fungal growth and neutrophil behavior in response to Aspergillus nidulans In a wild-type host, A. nidulans germinates rapidly and elicits a robust inflammatory response with efficient fungal clearance. PHOX-deficient larvae have increased susceptibility to invasive A. nidulans infection despite robust neutrophil infiltration. Expression of subunit p22phox (officially known as CYBA), specifically in neutrophils, does not affect fungal germination but instead limits the area of fungal growth and excessive neutrophil inflammation and is sufficient to restore host survival in p22phox-deficient larvae. These findings suggest that neutrophil ROS limits invasive fungal growth and has immunomodulatory activities that contribute to the specific susceptibility of PHOX-deficient hosts to invasive A. nidulans infection.
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Affiliation(s)
- Taylor J Schoen
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA.,Comparative Biomedical Sciences Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Emily E Rosowski
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Benjamin P Knox
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - David Bennin
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Nancy P Keller
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA.,Department of Bacteriology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Anna Huttenlocher
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI 53706, USA .,Department of Pediatrics, University of Wisconsin-Madison, Madison, WI 53706, USA
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Boateng LR, Bennin D, De Oliveira S, Huttenlocher A. Mammalian Actin-binding Protein-1/Hip-55 Interacts with FHL2 and Negatively Regulates Cell Invasion. J Biol Chem 2016; 291:13987-13998. [PMID: 27129278 DOI: 10.1074/jbc.m116.725739] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Indexed: 11/06/2022] Open
Abstract
Mammalian actin-binding protein-1 (mAbp1) is an adaptor protein that binds actin and modulates scission during endocytosis. Recent studies suggest that mAbp1 impairs cell invasion; however, the mechanism for the inhibitory effects of mAbp1 remain unclear. We performed a yeast two-hybrid screen and identified the adaptor protein, FHL2, as a novel binding partner that interacts with the N-terminal actin depolymerizing factor homology domain (ADFH) domain of mAbp1. Here we report that depletion of mAbp1 or ectopic expression of the ADFH domain of mAbp1 increased Rho GTPase signaling and breast cancer cell invasion. Moreover, cell invasion induced by the ADFH domain of mAbp1 required the expression of FHL2. Taken together, our findings show that mAbp1 and FHL2 are novel binding partners that differentially regulate Rho GTPase signaling and MTLn3 breast cancer cell invasion.
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Affiliation(s)
- Lindsy R Boateng
- Program in Cellular and Molecular Biology, University of Wisconsin, Madison, Wisconsin 53706
| | - David Bennin
- Departments of Medical Microbiology and Immunology and Pediatrics, University of Wisconsin, Madison, Wisconsin 53706
| | - Sofia De Oliveira
- Departments of Medical Microbiology and Immunology and Pediatrics, University of Wisconsin, Madison, Wisconsin 53706
| | - Anna Huttenlocher
- Departments of Medical Microbiology and Immunology and Pediatrics, University of Wisconsin, Madison, Wisconsin 53706.
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Cox EA, Bennin D, Doan AT, O'Toole T, Huttenlocher A. RACK1 regulates integrin-mediated adhesion, protrusion, and chemotactic cell migration via its Src-binding site. Mol Biol Cell 2003; 14:658-69. [PMID: 12589061 PMCID: PMC149999 DOI: 10.1091/mbc.e02-03-0142] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Mammalian cDNA expression cloning was used to identify novel regulators of integrin-mediated cell-substratum adhesions. Using a focal adhesion morphology screen, we identified a cDNA with homology to a receptor for activated protein kinase C (RACK1) that induced a loss of central focal adhesions and stress fibers in CHO-K1 cells. The identified cDNA was a C-terminal truncated form of RACK1 that had one of the putative protein kinase C binding sites but lacked the region proposed to bind the beta integrin cytoplasmic domain and the tyrosine kinase Src. To investigate the role of RACK1 during cell spreading and migration, we tagged RACK1, a C-terminal truncated RACK1 and a point mutant that does not bind Src (RACK Y246F) with green fluorescent protein and expressed them in CHO-K1 cells. We found that RACK1 regulates the organization of focal adhesions and that it localizes to a subset of nascent focal complexes in areas of protrusion that contain paxillin but not vinculin. We also found that RACK1 regulates cell protrusion and chemotactic migration through its Src binding site. Together, these findings suggest that RACK1 regulates adhesion, protrusion, and chemotactic migration through its interaction with Src.
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Affiliation(s)
- Elisabeth A Cox
- Departments of Pediatrics and Pharmacology, University of Wisconsin, Madison 53706, USA
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