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Kangas ST, Coulibaly IN, Tausanovitch Z, Ouologuem B, Marron B, Radin E, Ritz C, Dembele S, Ouédraogo CT, Bailey J. Post-Recovery Relapse of Children Treated with a Simplified, Combined Nutrition Treatment Protocol in Mali: A Prospective Cohort Study. Nutrients 2023; 15:nu15112636. [PMID: 37299599 DOI: 10.3390/nu15112636] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
The present study aimed to determine the 6-month incidence of relapse and associated factors among children who recovered from acute malnutrition (AM) following mid-upper arm circumference (MUAC)-based simplified combined treatment using the ComPAS protocol. A prospective cohort of 420 children who had reached a MUAC ≥ 125 mm for two consecutive measures was monitored between December 2020 and October 2021. Children were seen at home fortnightly for 6 months. The overall 6-month cumulative incidence of relapse [95%CI] into MUAC < 125 mm and/or edema was 26.1% [21.7; 30.8] and 1.7% [0.6; 3.6] to MUAC < 115 mm and/or edema. Relapse was similar among children initially admitted to treatment with a MUAC < 115 mm and/or oedema and among those with a MUAC ≥ 115 mm but <125 mm. Relapse was predicted by lower anthropometry both at admission to and discharge from treatment, and a higher number of illness episodes per month of follow-up. Having a vaccination card, using an improved water source, having agriculture as the main source of income, and increases in caregiver workload during follow-up all protected from relapse. Children discharged as recovered from AM remain at risk of relapsing into AM. To achieve reduction in relapse, recovery criteria may need to be revised and post-discharge strategies tested.
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Affiliation(s)
| | | | | | | | | | | | - Christian Ritz
- National Institute of Public Health, Copenhagen, Denmark
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Kim YA, Siddiqui T, Blaze J, Cosacak MI, Winters T, Kumar A, Tein E, Sproul AA, Teich AF, Bartolini F, Akbarian S, Kizil C, Hargus G, Santa-Maria I. RNA methyltransferase NSun2 deficiency promotes neurodegeneration through epitranscriptomic regulation of tau phosphorylation. Acta Neuropathol 2023; 145:29-48. [PMID: 36357715 PMCID: PMC9807547 DOI: 10.1007/s00401-022-02511-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 10/06/2022] [Accepted: 10/07/2022] [Indexed: 11/12/2022]
Abstract
Epitranscriptomic regulation adds a layer of post-transcriptional control to brain function during development and adulthood. The identification of RNA-modifying enzymes has opened the possibility of investigating the role epitranscriptomic changes play in the disease process. NOP2/Sun RNA methyltransferase 2 (NSun2) is one of the few known brain-enriched methyltransferases able to methylate mammalian non-coding RNAs. NSun2 loss of function due to autosomal-recessive mutations has been associated with neurological abnormalities in humans. Here, we show NSun2 is expressed in adult human neurons in the hippocampal formation and prefrontal cortex. Strikingly, we unravel decreased NSun2 protein expression and an increased ratio of pTau/NSun2 in the brains of patients with Alzheimer's disease (AD) as demonstrated by Western blotting and immunostaining, respectively. In a well-established Drosophila melanogaster model of tau-induced toxicity, reduction of NSun2 exacerbated tau toxicity, while overexpression of NSun2 partially abrogated the toxic effects. Conditional ablation of NSun2 in the mouse brain promoted a decrease in the miR-125b m6A levels and tau hyperphosphorylation. Utilizing human induced pluripotent stem cell (iPSC)-derived neuronal cultures, we confirmed NSun2 deficiency results in tau hyperphosphorylation. We also found that neuronal NSun2 levels decrease in response to amyloid-beta oligomers (AβO). Notably, AβO-induced tau phosphorylation and cell toxicity in human neurons could be rescued by overexpression of NSun2. Altogether, these results indicate that neuronal NSun2 deficiency promotes dysregulation of miR-125b and tau phosphorylation in AD and highlights a novel avenue for therapeutic targeting.
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Affiliation(s)
- Yoon A Kim
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, USA
- Department of Pathology and Cell Biology, Columbia University, New York, USA
| | - Tohid Siddiqui
- German Center for Neurodegenerative Diseases (DZNE), Helmholtz Association, Dresden, Germany
| | - Jennifer Blaze
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Mehmet Ilyas Cosacak
- German Center for Neurodegenerative Diseases (DZNE), Helmholtz Association, Dresden, Germany
| | - Tristan Winters
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, USA
- Department of Pathology and Cell Biology, Columbia University, New York, USA
| | - Atul Kumar
- Department of Pathology and Cell Biology, Columbia University, New York, USA
| | - Ellen Tein
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, USA
| | - Andrew A Sproul
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, USA
- Department of Pathology and Cell Biology, Columbia University, New York, USA
| | - Andrew F Teich
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, USA
- Department of Pathology and Cell Biology, Columbia University, New York, USA
| | - Francesca Bartolini
- Department of Pathology and Cell Biology, Columbia University, New York, USA
| | - Schahram Akbarian
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Caghan Kizil
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, USA
- German Center for Neurodegenerative Diseases (DZNE), Helmholtz Association, Dresden, Germany
- Department of Neurology, College of Physicians and Surgeons, Columbia University and the New York Presbyterian Hospital, New York, USA
| | - Gunnar Hargus
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, USA.
- Department of Pathology and Cell Biology, Columbia University, New York, USA.
| | - Ismael Santa-Maria
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, USA.
- Department of Pathology and Cell Biology, Columbia University, New York, USA.
- Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Edificio E, Pozuelo de Alarcón, Madrid, 28223, Spain.
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Lukhna K, do Carmo HRP, Castillo AR, Davidson SM, Geffen H, Giesz S, Golforoush P, Bovi TG, Gorag D, Salama A, Imamdin A, Kalkhoran S, Lecour S, Perroud Jr. MW, Ntsekhe M, Sposito AC, Yellon DM. Effect of Remote Ischaemic Conditioning on the Inflammatory Cytokine Cascade of COVID-19 (RIC in COVID-19): a Randomized Controlled Trial. Cardiovasc Drugs Ther 2022:10.1007/s10557-022-07411-2. [PMID: 36445625 PMCID: PMC9707178 DOI: 10.1007/s10557-022-07411-2] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/20/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Patients hospitalized with COVID-19 may develop a hyperinflammatory, dysregulated cytokine "storm" that rapidly progresses to acute respiratory distress syndrome, multiple organ dysfunction, and even death. Remote ischaemic conditioning (RIC) has elicited anti-inflammatory and cytoprotective benefits by reducing cytokines following sepsis in animal studies. Therefore, we investigated whether RIC would mitigate the inflammatory cytokine cascade induced by COVID-19. METHODS We conducted a prospective, multicentre, randomized, sham-controlled, single-blind trial in Brazil and South Africa. Non-critically ill adult patients with COVID-19 pneumonia were randomly allocated (1:1) to receive either RIC (intermittent ischaemia/reperfusion applied through four 5-min cycles of inflation (20 mmHg above systolic blood pressure) and deflation of an automated blood-pressure cuff) or sham for approximately 15 days. Serum was collected following RIC/sham administration and analyzed for inflammatory cytokines using flow cytometry. The endpoint was the change in serum cytokine concentrations. Participants were followed for 30 days. RESULTS Eighty randomized participants (40 RIC and 40 sham) completed the trial. Baseline characteristics according to trial intervention were overall balanced. Despite downward trajectories of all cytokines across hospitalization, we observed no substantial changes in cytokine concentrations after successive days of RIC. Time to clinical improvement was similar in both groups (HR 1.66; 95% CI, 0.938-2.948, p 0.08). Overall RIC did not demonstrate a significant impact on the composite outcome of all-cause death or clinical deterioration (HR 1.19; 95% CI, 0.616-2.295, p = 0.61). CONCLUSION RIC did not reduce the hypercytokinaemia induced by COVID-19 or prevent clinical deterioration to critical care. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04699227.
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Affiliation(s)
- Kishal Lukhna
- Division of Cardiology, Faculty of Health Sciences, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Helison R. P. do Carmo
- Atherosclerosis and Vascular Biology Laboratory, State University of Campinas, Campinas, Brazil
| | | | - Sean M. Davidson
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX UK
| | - Hayli Geffen
- Division of Cardiology, Faculty of Health Sciences, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Sara Giesz
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX UK
| | - Pelin Golforoush
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX UK
| | - Ticiane Gonçalez Bovi
- Atherosclerosis and Vascular Biology Laboratory, State University of Campinas, Campinas, Brazil
| | - Diana Gorag
- Atherosclerosis and Vascular Biology Laboratory, State University of Campinas, Campinas, Brazil
| | - Alan Salama
- Cape Heart Institute, University of Cape Town, Cape Town, South Africa
- The Royal Free Hospital, University College London, Pond St, London, NW3 2QG UK
| | - Aqeela Imamdin
- Cape Heart Institute, University of Cape Town, Cape Town, South Africa
| | - Siavash Kalkhoran
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX UK
| | - Sandrine Lecour
- Cape Heart Institute, University of Cape Town, Cape Town, South Africa
| | - Mauricio W. Perroud Jr.
- Atherosclerosis and Vascular Biology Laboratory, State University of Campinas, Campinas, Brazil
| | - Mpiko Ntsekhe
- Division of Cardiology, Faculty of Health Sciences, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Andrei C. Sposito
- Atherosclerosis and Vascular Biology Laboratory, State University of Campinas, Campinas, Brazil
| | - Derek M. Yellon
- The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX UK
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Kim PK, Halbrook CJ, Kerk SA, Radyk M, Wisner S, Kremer DM, Sajjakulnukit P, Andren A, Hou SW, Trivedi A, Thurston G, Anand A, Yan L, Salamanca-Cardona L, Welling SD, Zhang L, Pratt MR, Keshari KR, Ying H, Lyssiotis CA. Hyaluronic acid fuels pancreatic cancer cell growth. eLife 2021; 10:e62645. [PMID: 34951587 PMCID: PMC8730721 DOI: 10.7554/elife.62645] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/21/2021] [Indexed: 11/13/2022] Open
Abstract
Rewired metabolism is a hallmark of pancreatic ductal adenocarcinomas (PDA). Previously, we demonstrated that PDA cells enhance glycosylation precursor biogenesis through the hexosamine biosynthetic pathway (HBP) via activation of the rate limiting enzyme, glutamine-fructose 6-phosphate amidotransferase 1 (GFAT1). Here, we genetically ablated GFAT1 in human PDA cell lines, which completely blocked proliferation in vitro and led to cell death. In contrast, GFAT1 knockout did not preclude the growth of human tumor xenografts in mice, suggesting that cancer cells can maintain fidelity of glycosylation precursor pools by scavenging nutrients from the tumor microenvironment. We found that hyaluronic acid (HA), an abundant carbohydrate polymer in pancreatic tumors composed of repeating N-acetyl-glucosamine (GlcNAc) and glucuronic acid sugars, can bypass GFAT1 to refuel the HBP via the GlcNAc salvage pathway. Together, these data show HA can serve as a nutrient fueling PDA metabolism beyond its previously appreciated structural and signaling roles.
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Affiliation(s)
- Peter K Kim
- Doctoral Program in Cancer Biology, University of MichiganAnn ArborUnited States
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Christopher J Halbrook
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Samuel A Kerk
- Doctoral Program in Cancer Biology, University of MichiganAnn ArborUnited States
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Megan Radyk
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Stephanie Wisner
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Daniel M Kremer
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
- Program in Chemical Biology, University of MichiganAnn ArborUnited States
| | - Peter Sajjakulnukit
- Doctoral Program in Cancer Biology, University of MichiganAnn ArborUnited States
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Anthony Andren
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Sean W Hou
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Ayush Trivedi
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Galloway Thurston
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Abhinav Anand
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Liang Yan
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer CenterHoustonUnited States
| | | | - Samuel D Welling
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Li Zhang
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
| | - Matthew R Pratt
- Department of Chemistry, University of Southern CaliforniaLos AngelesUnited States
- Department of Biological Sciences, University of Southern CaliforniaLos AngelesUnited States
| | - Kayvan R Keshari
- Department of Radiology, Memorial Sloan Kettering Cancer CenterNew York CityUnited States
- Molecular Pharmacology Program, Memorial Sloan Kettering Cancer CenterNew York CityUnited States
| | - Haoqiang Ying
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer CenterHoustonUnited States
| | - Costas A Lyssiotis
- Department of Molecular & Integrative Physiology, University of MichiganAnn ArborUnited States
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of MichiganAnn ArborUnited States
- Rogel Cancer Center, University of MichiganAnn ArborUnited States
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5
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Somerville TDD, Biffi G, Daßler-Plenker J, Hur SK, He XY, Vance KE, Miyabayashi K, Xu Y, Maia-Silva D, Klingbeil O, Demerdash OE, Preall JB, Hollingsworth MA, Egeblad M, Tuveson DA, Vakoc CR. Squamous trans-differentiation of pancreatic cancer cells promotes stromal inflammation. eLife 2020; 9:e53381. [PMID: 32329713 PMCID: PMC7200154 DOI: 10.7554/elife.53381] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 04/23/2020] [Indexed: 12/18/2022] Open
Abstract
A highly aggressive subset of pancreatic ductal adenocarcinomas undergo trans-differentiation into the squamous lineage during disease progression. Here, we investigated whether squamous trans-differentiation of human and mouse pancreatic cancer cells can influence the phenotype of non-neoplastic cells in the tumor microenvironment. Conditioned media experiments revealed that squamous pancreatic cancer cells secrete factors that recruit neutrophils and convert pancreatic stellate cells into cancer-associated fibroblasts (CAFs) that express inflammatory cytokines at high levels. We use gain- and loss-of-function approaches to show that squamous-subtype pancreatic tumor models become enriched with neutrophils and inflammatory CAFs in a p63-dependent manner. These effects occur, at least in part, through p63-mediated activation of enhancers at pro-inflammatory cytokine loci, which includes IL1A and CXCL1 as key targets. Taken together, our findings reveal enhanced tissue inflammation as a consequence of squamous trans-differentiation in pancreatic cancer, thus highlighting an instructive role of tumor cell lineage in reprogramming the stromal microenvironment.
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Affiliation(s)
| | - Giulia Biffi
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborUnited States
- Cancer Research United Kingdom Cambridge Institute, University of CambridgeCambridgeUnited Kingdom
| | | | - Stella K Hur
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
| | - Xue-Yan He
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
| | - Krysten E Vance
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical CenterOmahaUnited States
| | - Koji Miyabayashi
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborUnited States
| | - Yali Xu
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
| | - Diogo Maia-Silva
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
- Watson School of Biological SciencesCold Spring HarborUnited States
| | - Olaf Klingbeil
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
| | | | | | - Michael A Hollingsworth
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical CenterOmahaUnited States
| | - Mikala Egeblad
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
| | - David A Tuveson
- Cold Spring Harbor LaboratoryCold Spring HarborUnited States
- Lustgarten Foundation Pancreatic Cancer Research LaboratoryCold Spring HarborUnited States
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Jenkins BA, Fontecilla NM, Lu CP, Fuchs E, Lumpkin EA. The cellular basis of mechanosensory Merkel-cell innervation during development. eLife 2019; 8:42633. [PMID: 30794158 PMCID: PMC6386521 DOI: 10.7554/elife.42633] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 02/06/2019] [Indexed: 02/06/2023] Open
Abstract
Touch sensation is initiated by mechanosensory neurons that innervate distinct skin structures; however, little is known about how these neurons are patterned during mammalian skin development. We explored the cellular basis of touch-receptor patterning in mouse touch domes, which contain mechanosensory Merkel cell-neurite complexes and abut primary hair follicles. At embryonic stage 16.5 (E16.5), touch domes emerge as patches of Merkel cells and keratinocytes clustered with a previously unsuspected population of Bmp4-expressing dermal cells. Epidermal Noggin overexpression at E14.5 disrupted touch-dome formation but not hair-follicle specification, demonstrating a temporally distinct requirement for BMP signaling in placode-derived structures. Surprisingly, two neuronal populations preferentially targeted touch domes during development but only one persisted in mature touch domes. Finally, Keratin-17-expressing keratinocytes but not Merkel cells were necessary to establish innervation patterns during development. These findings identify key cell types and signaling pathways required for targeting Merkel-cell afferents to discrete mechanosensory compartments.
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Affiliation(s)
- Blair A Jenkins
- Department of Physiology and Cellular BiophysicsColumbia UniversityNew YorkUnited States
- Department of DermatologyColumbia UniversityNew YorkUnited States
| | - Natalia M Fontecilla
- Department of Physiology and Cellular BiophysicsColumbia UniversityNew YorkUnited States
| | - Catherine P Lu
- Robin Neustein Laboratory of Mammalian Development and Cell BiologyHoward Hughes Medical Institute, The Rockefeller UniversityNew YorkUnited States
| | - Elaine Fuchs
- Robin Neustein Laboratory of Mammalian Development and Cell BiologyHoward Hughes Medical Institute, The Rockefeller UniversityNew YorkUnited States
| | - Ellen A Lumpkin
- Department of Physiology and Cellular BiophysicsColumbia UniversityNew YorkUnited States
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