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Gurdon B, Yates SC, Csucs G, Groeneboom NE, Hadad N, Telpoukhovskaia M, Ouellette A, Ouellette T, O'Connell K, Singh S, Murdy T, Merchant E, Bjerke I, Kleven H, Schlegel U, Leergaard TB, Puchades MA, Bjaalie JG, Kaczorowski CC. Detecting the effect of genetic diversity on brain composition in an Alzheimer's disease mouse model. bioRxiv 2023:2023.02.27.530226. [PMID: 36909528 PMCID: PMC10002670 DOI: 10.1101/2023.02.27.530226] [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] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Alzheimer's disease (AD) is characterized by neurodegeneration, pathology accumulation, and progressive cognitive decline. There is significant variation in age at onset and severity of symptoms highlighting the importance of genetic diversity in the study of AD. To address this, we analyzed cell and pathology composition of 6- and 14-month-old AD-BXD mouse brains using the semi-automated workflow (QUINT); which we expanded to allow for nonlinear refinement of brain atlas-registration, and quality control assessment of atlas-registration and brain section integrity. Near global age-related increases in microglia, astrocyte, and amyloid-beta accumulation were measured, while regional variation in neuron load existed among strains. Furthermore, hippocampal immunohistochemistry analyses were combined with bulk RNA-sequencing results to demonstrate the relationship between cell composition and gene expression. Overall, the additional functionality of the QUINT workflow delivers a highly effective method for registering and quantifying cell and pathology changes in diverse disease models.
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Affiliation(s)
- Brianna Gurdon
- The Jackson Laboratory, Bar Harbor, ME
- The University of Maine Graduate School of Biomedical Sciences and Engineering, Orono, ME
| | - Sharon C Yates
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Gergely Csucs
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Nicolaas E Groeneboom
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | | | | | - Andrew Ouellette
- The Jackson Laboratory, Bar Harbor, ME
- The University of Maine Graduate School of Biomedical Sciences and Engineering, Orono, ME
| | - Tionna Ouellette
- The Jackson Laboratory, Bar Harbor, ME
- Tufts University Graduate School of Biomedical Sciences, Medford, MA
| | - Kristen O'Connell
- The Jackson Laboratory, Bar Harbor, ME
- The University of Maine Graduate School of Biomedical Sciences and Engineering, Orono, ME
- Tufts University Graduate School of Biomedical Sciences, Medford, MA
| | | | - Tom Murdy
- The Jackson Laboratory, Bar Harbor, ME
| | | | - Ingvild Bjerke
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Heidi Kleven
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Ulrike Schlegel
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Trygve B Leergaard
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Maja A Puchades
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Jan G Bjaalie
- Neural Systems Laboratory, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Catherine C Kaczorowski
- The Jackson Laboratory, Bar Harbor, ME
- The University of Maine Graduate School of Biomedical Sciences and Engineering, Orono, ME
- Tufts University Graduate School of Biomedical Sciences, Medford, MA
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An JY, Kerns KA, Ouellette A, Robinson L, Morris HD, Kaczorowski C, Park SI, Mekvanich T, Kang A, McLean JS, Cox TC, Kaeberlein M. Rapamycin rejuvenates oral health in aging mice. eLife 2020; 9:e54318. [PMID: 32342860 PMCID: PMC7220376 DOI: 10.7554/elife.54318] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [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: 12/10/2019] [Accepted: 04/17/2020] [Indexed: 12/11/2022] Open
Abstract
Periodontal disease is an age-associated disorder clinically defined by periodontal bone loss, inflammation of the specialized tissues that surround and support the tooth, and microbiome dysbiosis. Currently, there is no therapy for reversing periodontal disease, and treatment is generally restricted to preventive measures or tooth extraction. The FDA-approved drug rapamycin slows aging and extends lifespan in multiple organisms, including mice. Here, we demonstrate that short-term treatment with rapamycin rejuvenates the aged oral cavity of elderly mice, including regeneration of periodontal bone, attenuation of gingival and periodontal bone inflammation, and revertive shift of the oral microbiome toward a more youthful composition. This provides a geroscience strategy to potentially rejuvenate oral health and reverse periodontal disease in the elderly.
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Affiliation(s)
- Jonathan Y An
- Department of Oral Health Sciences, University of WashingtonSeattleUnited States
- Department of Pathology, University of WashingtonSeattleUnited States
| | - Kristopher A Kerns
- Department of Oral Health Sciences, University of WashingtonSeattleUnited States
- Center of Excellence in Maternal and Child Health, University of WashingtonSeattleUnited States
| | | | | | | | | | - So-Il Park
- Department of Pathology, University of WashingtonSeattleUnited States
| | - Title Mekvanich
- Department of Pathology, University of WashingtonSeattleUnited States
| | - Alex Kang
- Department of Pathology, University of WashingtonSeattleUnited States
| | - Jeffrey S McLean
- Department of Oral Health Sciences, University of WashingtonSeattleUnited States
- Department of Periodontics, University of WashingtonSeattleUnited States
| | - Timothy C Cox
- Department of Pediatrics, University of Washington, Seattle Children’s Research InstituteSeattleUnited States
| | - Matt Kaeberlein
- Department of Oral Health Sciences, University of WashingtonSeattleUnited States
- Department of Pathology, University of WashingtonSeattleUnited States
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An JY, Kerns KA, Ouellette A, Robinson L, Morris HD, Kaczorowski C, Park SI, Mekvanich T, Kang A, McLean JS, Cox TC, Kaeberlein M. Rapamycin rejuvenates oral health in aging mice. eLife 2020. [PMID: 32342860 DOI: 10.7554/elife.54318.] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Periodontal disease is an age-associated disorder clinically defined by periodontal bone loss, inflammation of the specialized tissues that surround and support the tooth, and microbiome dysbiosis. Currently, there is no therapy for reversing periodontal disease, and treatment is generally restricted to preventive measures or tooth extraction. The FDA-approved drug rapamycin slows aging and extends lifespan in multiple organisms, including mice. Here, we demonstrate that short-term treatment with rapamycin rejuvenates the aged oral cavity of elderly mice, including regeneration of periodontal bone, attenuation of gingival and periodontal bone inflammation, and revertive shift of the oral microbiome toward a more youthful composition. This provides a geroscience strategy to potentially rejuvenate oral health and reverse periodontal disease in the elderly.
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Affiliation(s)
- Jonathan Y An
- Department of Oral Health Sciences, University of Washington, Seattle, United States.,Department of Pathology, University of Washington, Seattle, United States
| | - Kristopher A Kerns
- Department of Oral Health Sciences, University of Washington, Seattle, United States.,Center of Excellence in Maternal and Child Health, University of Washington, Seattle, United States
| | | | | | | | | | - So-Il Park
- Department of Pathology, University of Washington, Seattle, United States
| | - Title Mekvanich
- Department of Pathology, University of Washington, Seattle, United States
| | - Alex Kang
- Department of Pathology, University of Washington, Seattle, United States
| | - Jeffrey S McLean
- Department of Oral Health Sciences, University of Washington, Seattle, United States.,Department of Periodontics, University of Washington, Seattle, United States
| | - Timothy C Cox
- Department of Pediatrics, University of Washington, Seattle Children's Research Institute, Seattle, United States
| | - Matt Kaeberlein
- Department of Oral Health Sciences, University of Washington, Seattle, United States.,Department of Pathology, University of Washington, Seattle, United States
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Dunn A, Ouellette A, Neuner SM, O'Connell KMS, Kaczorowski CC. P1‐147: GENE X DIET INTERACTIONS MODIFY SYMPTOMS OF ALZHEIMER'S DISEASE. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Amy Dunn
- The Jackson LaboratoryBar HarborMEUSA
| | | | - Sarah M. Neuner
- The University of Tennessee Health Science CenterMemphisTNUSA
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Bryant CE, Ouellette A, Lohmann K, Vandenplas M, Moore JN, Maskell DJ, Farnfield BA. The cellular Toll-like receptor 4 antagonist E5531 can act as an agonist in horse whole blood. Vet Immunol Immunopathol 2007; 116:182-9. [PMID: 17320193 DOI: 10.1016/j.vetimm.2007.01.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [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: 11/07/2006] [Revised: 01/09/2007] [Accepted: 01/24/2007] [Indexed: 11/24/2022]
Abstract
Sepsis and endotoxaemia are important causes of morbidity and mortality in humans. Research on sepsis focuses on rodent models most of which are poorly responsive to lipopolysaccharide (LPS), and thus do not mimic very well the high sensitivity of humans. Therefore, there is a need to develop more clinically relevant models. Horses suffer from a similar endotoxaemic syndrome to humans with high morbidity and mortality. LPS analogues that act as antagonists at Toll-like receptor 4 (TLR4) are being developed as novel treatments for endotoxaemia. Due to differences in recognition of ligands by TLR4 from different mammalian species, individual LPS molecules may act as agonists in some species and antagonists in others. The synthetic lipid A analogue E5531 is an antagonist at TLR4 in humans and mice, but its effects at TLR4 from other species are unknown. In the studies reported here, Escherichia coli LPS is a full agonist on equine bone marrow macrophage-like cells and its effects are antagonised by E5531. Similarly, E. coli LPS is an agonist and E5531 an antagonist on monocytes isolated from peripheral blood of healthy horses and human embryonic kidney (HEK) cells, transiently transfected to express horse TLR4 and its associated cell surface proteins MD2 and CD14. In contrast, both E. coli LPS and E5531 behave as agonists in horse whole blood by inducing production of equivalent amounts of the inflammatory mediator prostaglandin. This finding suggests that modification of E5531 may occur in whole blood, for example, deacylation, which alters its activity. This comparative study has revealed a novel pharmacological action of E5531 and emphasises the importance of extending studies of this nature beyond the normal rodent models.
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Affiliation(s)
- Clare E Bryant
- Department of Veterinary Medicine, The University of Cambridge, Madingley Road, Cambridge CB3 0ES, United Kingdom.
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Bry L, Falk P, Huttner K, Ouellette A, Midtvedt T, Gordon JI. Paneth cell differentiation in the developing intestine of normal and transgenic mice. Proc Natl Acad Sci U S A 1994; 91:10335-9. [PMID: 7937951 PMCID: PMC45014 DOI: 10.1073/pnas.91.22.10335] [Citation(s) in RCA: 196] [Impact Index Per Article: 6.5] [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: 01/28/2023] Open
Abstract
Paneth cells represent one of the four major epithelial lineages in the mouse small intestine. It is the only lineage that migrates downward from the stem-cell zone located in the lower portion of the crypt of Lieberkühn to the crypt base. Mature Paneth cells release growth factors, digestive enzymes, and antimicrobial peptides from their apical secretory granules. Some of these factors may affect the crypt stem cell, its transit-cell descendants, differentiating villus-associated epithelial lineages, and/or the gut microflora. We used single and multilabel immunocytochemical methods to study Paneth cell differentiation during and after completion of gut morphogenesis in normal, gnotobiotic, and transgenic mice as well as in intestinal isografts. This lineage emerges coincident with cytodifferentiation of the fetal small intestinal endoderm, formation of crypts from an intervillus epithelium, and establishment of a stem-cell hierarchy. The initial differentiation program involves sequential expression of cryptdins, a phospholipase A2 (enhancing factor), and lysozyme. A dramatic increase in Paneth cell number per crypt occurs during postnatal days 14-28, when crypts proliferate by fission. Accumulation of fucosylated and sialylated glycoconjugates during this period represents the final evolution of the lineage's differentiation program. Establishment of this lineage is not dependent upon instructive interactions from the microflora. Transgenic mice containing nucleotides -6500 to +34 of the Paneth cell-specific mouse cryptdin 2 gene linked to the human growth hormone gene beginning at its nucleotide +3 inappropriately express human growth hormone in a large population of proliferating and nonproliferating cells in the intervillus epithelium up to postnatal day 5. Transgene expression subsequently becomes restricted to the Paneth cell lineage in the developing crypt. Cryptdin 2 nucleotides -6500 to +34 should be a useful marker of crypt morphogenesis and a valuable tool for conducting gain-of-function or loss-of-function experiments in Paneth cells.
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Affiliation(s)
- L Bry
- Department of Molecular Biology and Pharmacology, Washington University School of Medicine, St. Louis, MO 63110
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Carter EA, Jung W, Ehrlich HP, Ouellette A. Thermal trauma and gastrointestinal function: III. Effect of hot- and cold-burn trauma on small intestinal weight and mucosal mass of mice. J Burn Care Rehabil 1988; 9:351-3. [PMID: 3220849] [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] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The effect of hot- and cold-burn trauma on small intestinal mass in mice has been examined. Hot-burn but not cold-burn caused a significant reduction in the intestinal mass 24 hours after application of the trauma. These data may suggest that the alterations produced in the small intestine associated with hot-burn injury, are related, in part, to factors released from the skin.
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Affiliation(s)
- E A Carter
- Massachusetts General Hospital, Department of Pathology, Boston 02114
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Dzau VJ, Ellison K, McGowan D, Gross KW, Ouellette A. Hybridization studies with a renin cDNA probe: evidence for widespread expression of renin in the mouse. J Hypertens Suppl 1984; 2:S235-7. [PMID: 6085889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
To delineate tissue sites of renin synthesis the levels of renin enzyme activity and renin mRNA sequence were measured in various organs of adult male outbred Swiss mice. Blots containing poly (A)+ RNA from each organ were hybridized to the renin cDNA probe ID-2 labelled by nick translation to quantitate renin mRNA sequence. Densitometric analysis of these blots and similar blots containing total organ RNA in place of poly (A)+ RNA showed that the relative organ contents of RNA sequence complementary to renin cDNA could be ordered as follows: submandibular gland greater than testis greater than kidney greater than adrenal greater than heart; spleen and liver were unreactive. Measurements of renin enzyme activity in these organs were in general agreement with the hybridization results. These data document the widespread synthesis of renin in organs of the mouse and suggest a general biological role for renin. Identification of the specific cells expressing renin mRNA will further our understanding of tissue-specific expression of the renin genes.
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Abstract
1. Poly(A)+ mRNA from mouse submaxillary gland encodes a polypeptide of molecular weight 48 000 (48K polypeptide) which is abundant in the male. 2. This polypeptide is selectively absent in the translation products of mRNA from a strain of genetically renin-deficient mice C57 BL/10J. 3. The 48K polypeptide binds and co-elutes in identical fashion with pure authentic renin on pepstatin affinity chromatography. 4. Immunoprecipitation of translation products of male glandular mRNA with renin-specific antibody yielded this 48K band upon analysis by SDS/polyacrylamide gel electrophoresis and fluorography. Pure renin of molecular weight 37 000 blocked the binding of this polypeptide to antirenin antibody. 5. Mouse submaxillary gland synthesizes a renin precursor. The renin mRNA is androgenically regulated.
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