1
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Saunders MN, Rad LM, Williams LA, Landers JJ, Urie RR, Hocevar SE, Quiros M, Chiang MY, Angadi AR, Janczak KW, Bealer EJ, Crumley K, Benson OE, Griffin KV, Ross BC, Parkos CA, Nusrat A, Miller SD, Podojil JR, O'Konek JJ, Shea LD. Allergen-Encapsulating Nanoparticles Reprogram Pathogenic Allergen-Specific Th2 Cells to Suppress Food Allergy. Adv Healthc Mater 2024:e2400237. [PMID: 38691819 DOI: 10.1002/adhm.202400237] [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: 01/20/2024] [Revised: 04/10/2024] [Indexed: 05/03/2024]
Abstract
Food allergy is a prevalent, potentially deadly disease caused by inadvertent sensitization to benign food antigens. Pathogenic Th2 cells are a major driver for disease, and allergen-specific immunotherapies (AIT) aim to increase the allergen threshold required to elicit severe allergic symptoms. However, the majority of AIT approaches require lengthy treatments and convey transient disease suppression, likely due to insufficient targeting of pathogenic Th2 responses. Here, the ability of allergen-encapsulating nanoparticles to directly suppress pathogenic Th2 responses and reactivity is investigated in a mouse model of food allergy. NPs associate with pro-tolerogenic antigen presenting cells, provoking accumulation of antigen-specific, functionally suppressive regulatory T cells in the small intestine lamina propria. Two intravenous doses of allergen encapsulated in poly(lactide-co-glycolide) nanoparticles (NPs) significantly reduces oral food challenge (OFC)-induced anaphylaxis. Importantly, NP treatment alters the fates of pathogenic allergen-specific Th2 cells, reprogramming these cells toward CD25+FoxP3+ regulatory and CD73+FR4+ anergic phenotypes. NP-mediated reductions in the frequency of effector cells in the gut and mast cell degranulation following OFC are also demonstrated. These studies reveal mechanisms by which an allergen-encapsulating NP therapy and, more broadly, allergen-specific immunotherapies, can rapidly attenuate allergic responses by targeting pathogenic Th2 cells.
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Affiliation(s)
- Michael N Saunders
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Laila M Rad
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Laura A Williams
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jeffrey J Landers
- Mary H. Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Russell R Urie
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Sarah E Hocevar
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Miguel Quiros
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ming-Yi Chiang
- Department of Microbiology-Immunology, Northwestern University, Chicago, IL, 60611, USA
| | - Amogh R Angadi
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Katarzyna W Janczak
- Mary H. Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Elizabeth J Bealer
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kelly Crumley
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Olivia E Benson
- Mary H. Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kate V Griffin
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Brian C Ross
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Charles A Parkos
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Asma Nusrat
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Stephen D Miller
- Department of Microbiology-Immunology, Northwestern University, Chicago, IL, 60611, USA
- Center for Human Immunobiology, Northwestern University, Chicago, IL, 60611, USA
- Interdepartmental Immunobiology Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Joseph R Podojil
- Department of Microbiology-Immunology, Northwestern University, Chicago, IL, 60611, USA
- Center for Human Immunobiology, Northwestern University, Chicago, IL, 60611, USA
- Cour Pharmaceuticals Development Company, Northbrook, IL, 60077, USA
| | - Jessica J O'Konek
- Mary H. Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
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Saunders MN, Griffin KV, Kalashnikova I, Kolpek D, Smith DR, Saito E, Cummings BJ, Anderson AJ, Shea LD, Park J. Biodegradable nanoparticles targeting circulating immune cells reduce central and peripheral sensitization to alleviate neuropathic pain following spinal cord injury. Pain 2024; 165:92-101. [PMID: 37463227 PMCID: PMC10787809 DOI: 10.1097/j.pain.0000000000002989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] [Received: 12/27/2022] [Accepted: 05/26/2023] [Indexed: 07/20/2023]
Abstract
ABSTRACT Neuropathic pain is a critical source of comorbidity following spinal cord injury (SCI) that can be exacerbated by immune-mediated pathologies in the central and peripheral nervous systems. In this article, we investigate whether drug-free, biodegradable, poly(lactide- co -glycolide) (PLG) nanoparticle treatment mitigates the development of post-SCI neuropathic pain in female mice. Our results show that acute treatment with PLG nanoparticles following thoracic SCI significantly reduces tactile and cold hypersensitivity scores in a durable fashion. Nanoparticles primarily reduce peripheral immune-mediated mechanisms of neuropathic pain, including neuropathic pain-associated gene transcript frequency, transient receptor potential ankyrin 1 nociceptor expression, and MCP-1 (CCL2) chemokine production in the subacute period after injury. Altered central neuropathic pain mechanisms during this period are limited to reduced innate immune cell cytokine expression. However, in the chronic phase of SCI, nanoparticle treatment induces changes in both central and peripheral neuropathic pain signaling, driving reductions in cytokine production and other immune-relevant markers. This research suggests that drug-free PLG nanoparticles reprogram peripheral proalgesic pathways subacutely after SCI to reduce neuropathic pain outcomes and improve chronic central pain signaling.
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Affiliation(s)
- Michael N Saunders
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Kate V Griffin
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Irina Kalashnikova
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY USA
| | - Daniel Kolpek
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY USA
| | - Dominique R Smith
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Eiji Saito
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Brian J Cummings
- Department of Anatomy and Neurobiology, University of California, Irvine, CA USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA USA
| | - Aileen J Anderson
- Department of Anatomy and Neurobiology, University of California, Irvine, CA USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI USA
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Jonghyuck Park
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY USA
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY USA
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Ross BC, Kent RN, Saunders MN, Schwartz SR, Smiley BM, Hocevar SE, Chen SC, Xiao C, Williams LA, Anderson AJ, Cummings BJ, Baker BM, Shea LD. Building-Block Size Mediates Microporous Annealed Particle Hydrogel Tube Microenvironment Following Spinal Cord Injury. Adv Healthc Mater 2023:e2302498. [PMID: 37768019 DOI: 10.1002/adhm.202302498] [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: 08/01/2023] [Revised: 09/10/2023] [Indexed: 09/29/2023]
Abstract
Spinal cord injury (SCI) is a life-altering event, which often results in loss of sensory and motor function below the level of trauma. Biomaterial therapies have been widely investigated in SCI to promote directional regeneration but are often limited by their pre-constructed size and shape. Herein, the design parameters of microporous annealed particles (MAPs) are investigated with tubular geometries that conform to the injury and direct axons across the defect to support functional recovery. MAP tubes prepared from 20-, 40-, and 60-micron polyethylene glycol (PEG) beads are generated and implanted in a T9-10 murine hemisection model of SCI. Tubes attenuate glial and fibrotic scarring, increase innate immune cell density, and reduce inflammatory phenotypes in a bead size-dependent manner. Tubes composed of 60-micron beads increase the cell density of the chronic macrophage response, while neutrophil infiltration and phenotypes do not deviate from those seen in controls. At 8 weeks postinjury, implantation of tubes composed of 60-micron beads results in enhanced locomotor function, robust axonal ingrowth, and remyelination through both lumens and the inter-tube space. Collectively, these studies demonstrate the importance of bead size in MAP construction and highlight PEG tubes as a biomaterial therapy to promote regeneration and functional recovery in SCI.
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Affiliation(s)
- Brian C Ross
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Robert N Kent
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Michael N Saunders
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Samantha R Schwartz
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Brooke M Smiley
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Sarah E Hocevar
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
- Neuroscience Graduate Program, University of Michigan Medical School, 204 Washtenaw Ave, Ann Arbor, MI, 48109, USA
| | - Shao-Chi Chen
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Chengchuan Xiao
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, 1105 North University Ave, Ann Arbor, MI, 48109, USA
| | - Laura A Williams
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
| | - Aileen J Anderson
- Institute for Memory Impairments and Neurological Disorders, University of California, Biological Sciences III, 2642, Irvine, CA, 92697, USA
- Sue and Bill Gross Stem Cell Research Center, University of California, 845 Health Sciences Rd, Irvine, CA, 92697, USA
- Physical Medicine and Rehabilitation, University of California, 18124 Culver Dr # F, Irvine, CA, 92612, USA
| | - Brian J Cummings
- Institute for Memory Impairments and Neurological Disorders, University of California, Biological Sciences III, 2642, Irvine, CA, 92697, USA
- Sue and Bill Gross Stem Cell Research Center, University of California, 845 Health Sciences Rd, Irvine, CA, 92697, USA
- Physical Medicine and Rehabilitation, University of California, 18124 Culver Dr # F, Irvine, CA, 92612, USA
| | - Brendon M Baker
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
- Department of Chemical Engineering, University of Michigan, 2300 Hayward St, Ann Arbor, MI, 48109, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI, 48109, USA
- Neuroscience Graduate Program, University of Michigan Medical School, 204 Washtenaw Ave, Ann Arbor, MI, 48109, USA
- Department of Chemical Engineering, University of Michigan, 2300 Hayward St, Ann Arbor, MI, 48109, USA
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Hughes KR, Saunders MN, Landers JJ, Janczak KW, Turkistani H, Rad LM, Miller SD, Podojil JR, Shea LD, O'Konek JJ. Masked Delivery of Allergen in Nanoparticles Safely Attenuates Anaphylactic Response in Murine Models of Peanut Allergy. Front Allergy 2022; 3:829605. [PMID: 35386645 PMCID: PMC8974743 DOI: 10.3389/falgy.2022.829605] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/12/2022] [Indexed: 11/24/2022] Open
Abstract
Food allergy is a growing health concern worldwide. Current allergen-specific immunotherapy (AIT) approaches require frequent dosing over extended periods of time and may induce anaphylaxis due to allergen-effector cell interactions. A critical need remains to develop novel approaches that refine AIT for the treatment of food allergies. Previous studies show that poly(lactide-co-glycolide) (PLG) nanoscale particles (NP) effectively suppress Th1- and Th17-driven immune pathologies. However, their ability to suppress the distinct Th2-polarized immune responses driving food allergy are unknown. Herein, we describe the safety and efficacy of NPs containing encapsulated peanut allergen in desensitizing murine models of peanut allergy. Peanut extract encapsulation allowed for the safe intravenous delivery of allergen relative to non-encapsulated approaches. Application of 2–3 doses, without the need for dose escalation, was sufficient to achieve prophylactic and therapeutic efficacy, which correlated with suppression of Th2-mediated disease and reduced mast cell degranulation. Efficacy was associated with strong reductions in a broad panel of Th1, Th2, and Th17 cytokines. These results demonstrate the ability of PLG NPs to suppress allergen-specific immune responses to induce a more tolerogenic phenotype, conferring protection from intragastric allergen challenge. These promising studies represent a step forward in the development of improved immunotherapies for food allergy.
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Affiliation(s)
- Kevin R. Hughes
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Michael N. Saunders
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
- Medical Scientist Training Program, University of Michigan, Ann Arbor, MI, United States
| | - Jeffrey J. Landers
- Mary H. Weiser Food Allergy Center, Michigan Medicine, Ann Arbor, MI, United States
| | - Katarzyna W. Janczak
- Mary H. Weiser Food Allergy Center, Michigan Medicine, Ann Arbor, MI, United States
| | - Hamza Turkistani
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Laila M. Rad
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Stephen D. Miller
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Joseph R. Podojil
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
- COUR Pharmaceuticals Development Co, Inc., Northbrook, IL, United States
| | - Lonnie D. Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, United States
- Department of Surgery, University of Michigan, Ann Arbor, MI, United States
- Lonnie D. Shea
| | - Jessica J. O'Konek
- Mary H. Weiser Food Allergy Center, Michigan Medicine, Ann Arbor, MI, United States
- *Correspondence: Jessica J. O'Konek
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Thompson RE, Lake A, Kenny P, Saunders MN, Sakers K, Iyer NR, Dougherty JD, Sakiyama-Elbert SE. Different Mixed Astrocyte Populations Derived from Embryonic Stem Cells Have Variable Neuronal Growth Support Capacities. Stem Cells Dev 2017; 26:1597-1611. [PMID: 28851266 DOI: 10.1089/scd.2017.0121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Central nervous system injury often leads to functional impairment due, in part, to the formation of an inhibitory glial scar following injury that contributes to poor regeneration. Astrocytes are the major cellular components of the glial scar, which has led to the belief that they are primarily inhibitory following injury. Recent work has challenged this by demonstrating that some astrocytes are required for spinal cord regeneration and astrocytic roles in recovery depend on their phenotype. In this work, two mixed populations containing primarily either fibrous or protoplasmic astrocytes were derived from mouse embryonic stem cells (mESCs). Motoneuron and V2a interneuron growth on live cultures, freeze-lysed cultures, or decellularized extracellular matrix (ECM) from astrocytes were assessed. Both neuronal populations were found to extend significantly longer neurites on protoplasmic-derived substrates than fibrous-derived substrates. Interestingly, neurons extended longer neurites on protoplasmic-derived ECM than fibrous-derived ECM. ECM proteins were compared with in vivo astrocyte expression profiles, and it was found that the ESC-derived ECMs were enriched for astrocyte-specific proteins. Further characterization revealed that protoplasmic ECM had significantly higher levels of axon growth promoting proteins, while fibrous ECM had significantly higher levels of proteins that inhibit axon growth. Supporting this observation, knockdown of spondin-1 improved neurite growth on fibrous ECM, while laminin α5 and γ1 knockdown decreased neurite growth on protoplasmic ECM. These methods allow for scalable production of specific astrocyte subtype-containing populations with different neuronal growth support capacities, and can be used for further studies of the functional importance of astrocyte heterogeneity.
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Affiliation(s)
- Russell E Thompson
- 1 Department of Biomedical Engineering, Washington University in St. Louis , St. Louis, Missouri.,2 Department of Biomedical Engineering, University of Texas at Austin , Austin, Texas
| | - Allison Lake
- 3 Department of Genetics, Washington University School of Medicine , St. Louis, Missouri.,4 Department of Psychiatry, Washington University School of Medicine , St. Louis, Missouri
| | - Peter Kenny
- 2 Department of Biomedical Engineering, University of Texas at Austin , Austin, Texas
| | - Michael N Saunders
- 1 Department of Biomedical Engineering, Washington University in St. Louis , St. Louis, Missouri.,2 Department of Biomedical Engineering, University of Texas at Austin , Austin, Texas
| | - Kristina Sakers
- 3 Department of Genetics, Washington University School of Medicine , St. Louis, Missouri.,4 Department of Psychiatry, Washington University School of Medicine , St. Louis, Missouri
| | - Nisha R Iyer
- 1 Department of Biomedical Engineering, Washington University in St. Louis , St. Louis, Missouri
| | - Joseph D Dougherty
- 3 Department of Genetics, Washington University School of Medicine , St. Louis, Missouri.,4 Department of Psychiatry, Washington University School of Medicine , St. Louis, Missouri
| | - Shelly E Sakiyama-Elbert
- 1 Department of Biomedical Engineering, Washington University in St. Louis , St. Louis, Missouri.,2 Department of Biomedical Engineering, University of Texas at Austin , Austin, Texas
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Abstract
Mental stimulation ensures the flow of blood, oxygen and nutrients to the brain. The stimulation can be either generated internally from thought and rumination or externally from our environment via the senses. Without this stimulation, neuron shrinkage and atrophy eventually may lead to depression and senile dementia. This paper explains why mental stimulation may be prevented from realizing its beneficial effects of increasing the blood flow to the brain. The hypothesis is based on feedback biological mechanisms that prevent overload of the neural circuitry due to excessive mental stimulation. However, if overstimulation is maintained over a long period and, with it, the overload protection process, it may eventually lead to permanent depletion of neuron connections and also neural communications.
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