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Profile

Timothy Sampson

  • Department of Cell Biology
    Assistant Professor
  • timothy.robert.sampson@emory.edu
Head shot of Timothy Sampson

Research

Publications

  • Microbial amyloids in neurodegenerative amyloid diseases.
    FEBS J Volume: 292 Page(s): 1265 - 1281
    03/01/2025 Authors: Sampson T
  • Indigenous gut microbes modulate neural cell state and neurodegenerative disease susceptibility.
    bioRxiv
    02/22/2025 Authors: Blackmer-Raynolds L; Sampson MM; Kozlov A; Yang A; Lipson L; Hamilton AM; Kelly SD; Chopra P; Chang J; Sloan SA
  • Longitudinal characterization reveals behavioral impairments in aged APP knock in mouse models.
    Sci Rep Volume: 15 Page(s): 4631
    02/07/2025 Authors: Blackmer-Raynolds L; Lipson LD; Fraccaroli I; Krout IN; Chang J; Sampson TR
  • Alpha synuclein overexpression can drive microbiome dysbiosis in mice.
    Sci Rep Volume: 15 Page(s): 4014
    02/01/2025 Authors: Sampson TR; Wallen ZD; Won W-J; Standaert DG; Payami H; Harms AS
  • Lewy body diseases and the gut.
    Mol Neurodegener Volume: 20 Page(s): 14
    01/30/2025 Authors: Sampson TR; Tansey MG; West AB; Liddle RA
  • The pyrethroid insecticide deltamethrin disrupts neuropeptide and monoamine signaling pathways in the gastrointestinal tract.

    12/17/2024 Authors: White AC; Krout IN; Mouhi S; Chang J; Kelly SD; Caudle WM; Sampson TR
  • Microbiome-based therapeutics for Parkinson's disease.
    Neurotherapeutics Volume: 21 Page(s): e00462
    10/01/2024 Authors: Hamilton AM; Krout IN; White AC; Sampson TR
  • Fecal Microbiome Transplants For Parkinson Disease.
    JAMA Neurol Volume: 81 Page(s): 911 - 913
    09/01/2024 Authors: Sampson TR
  • Diet-microbiome interactions promote enteric nervous system resilience following spinal cord injury.
    NPJ Biofilms Microbiomes Volume: 10 Page(s): 75
    08/29/2024 Authors: Hamilton AM; Blackmer-Raynolds L; Li Y; Kelly SD; Kebede N; Williams AE; Chang J; Garraway SM; Srinivasan S; Sampson TR
  • Diet-induced metabolic and immune impairments are sex-specifically modulated by soluble TNF signaling in the 5xFAD mouse model of Alzheimer's disease.
    Neurobiol Dis Volume: 196 Page(s): 106511
    06/15/2024 Authors: Rodrigues MEDS; Bolen ML; Blackmer-Raynolds L; Schwartz N; Chang J; Tansey MG; Sampson TR
  • Diet-microbiome interactions promote enteric nervous system resilience following spinal cord injury.

    06/08/2024 Authors: Hamilton AM; Blackmer-Raynolds L; Li Y; Kelly S; Kebede N; Williams A; Chang J; Garraway SM; Srinivasan S; Sampson TR
  • Diet-induced metabolic and immune impairments are sex-specifically modulated by soluble TNF signaling in the 5xFAD mouse model of Alzheimer's disease.

    02/28/2024 Authors: De Sousa Rodrigues ME; Bolen ML; Blackmer-Raynolds L; Schwartz N; Chang J; Tansey MG; Sampson TR
  • Circulating Extracellular Vesicles as a Potential Mediator of Synuclein Pathology in the Gut.
    Mov Disord Volume: 39 Page(s): 3 - 5
    01/01/2024 Authors: Sampson TR
  • Population fraction of Parkinson's disease attributable to preventable risk factors.
    NPJ Parkinsons Dis Volume: 9 Page(s): 159
    12/05/2023 Authors: Payami H; Cohen G; Murchison CF; Sampson TR; Standaert DG; Wallen ZD
  • Overview of the Gut Microbiome.
    Semin Neurol Volume: 43 Page(s): 518 - 529
    08/01/2023 Authors: Blackmer-Raynolds L; Sampson TR
  • Population fraction of Parkinson's disease attributable to preventable risk factors.
    medRxiv
    05/19/2023 Authors: Payami H; Cohen G; Murchison CF; Sampson TR; Standaert DG; Wallen ZD
  • Revealing gut microbiome associations with CFS.
    Cell Host Microbe Volume: 31 Page(s): 171 - 172
    02/08/2023 Authors: Sampson TR
  • Soluble TNF mediates amyloid-independent, diet-induced alterations to immune and neuronal functions in an Alzheimer's disease mouse model.
    Front Cell Neurosci Volume: 17 Page(s): 895017
    01/01/2023 Authors: MacPherson KP; Eidson LN; Houser MC; Weiss BE; Gollihue JL; Herrick MK; de Sousa Rodrigues ME; Sniffen L; Weekman EM; Hamilton AM
  • Metagenomics of Parkinson's disease implicates the gut microbiome in multiple disease mechanisms.
    Nat Commun Volume: 13 Page(s): 6958
    11/15/2022 Authors: Wallen ZD; Demirkan A; Twa G; Cohen G; Dean MN; Standaert DG; Sampson TR; Payami H
  • Gut microbiota regulate Alzheimer's disease pathologies and cognitive disorders via PUFA-associated neuroinflammation.
    Gut Volume: 71 Page(s): 2233 - 2252
    11/01/2022 Authors: Chen C; Liao J; Xia Y; Liu X; Jones R; Haran J; McCormick B; Sampson TR; Alam A; Ye K
  • Uncovering Wide-Spread Dysbiosis at Species-Level Resolution Implicates the Gut Microbiome in Multiple Parkinson Disease Pathologies
    Volume: 92 Page(s): S127 - S127
    10/01/2022 Authors: Wallen ZD; Demirkan A; Twa G; Cohen G; Dean MN; Standaert DG; Sampson T; Payami H
  • The gut-brain axis goes viral.
    Cell Host Microbe Volume: 30 Page(s): 283 - 285
    03/09/2022 Authors: Blackmer-Raynolds LD; Sampson TR
  • Traumatic spinal cord injury and the contributions of the post-injury microbiome.
    Volume: 167 Page(s): 251 - 290
    01/01/2022 Authors: Hamilton AM; Sampson TR
  • Introduction: Unraveling the complex contributions of indigenous microbes to neurological health and disease.
    Volume: 167 Page(s): xi - xvi
    01/01/2022 Authors: Sampson TR
  • MICROBIOME ALTERATIONS LEAD TO IMPAIRED GASTROINTESTINAL MOTILITY FOLLOWING SPINAL CORD INJURY
    Volume: 160 Page(s): S735 - S735
    05/01/2021 Authors: Hamilton AM; Chang J; Garraway SM; Srinivasan S; Sampson TR
  • A PILOT STUDY ON PATIENTS WITH FECAL INCONTINENCE REVEALS DISEASE-ASSOCIATED ALTERATIONS IN MICROBIOME THAT MAY CONTRIBUTE TO DISEASE PATHOPHYSIOLOGY
    Volume: 160 Page(s): S499 - S499
    05/01/2021 Authors: Raja S; Hamilton AM; Li G; Mwangi SM; Chassaing B; Gewirtz AT; Vaughan EC; Sampson TR; Srinivasan S
  • Gut-seeded -synuclein fibrils promote gut dysfunction and brain pathology specifically in aged mice.
    Nat Neurosci Volume: 23 Page(s): 327 - 336
    03/01/2020 Authors: Challis C; Hori A; Sampson TR; Yoo BB; Challis RC; Hamilton AM; Mazmanian SK; Volpicelli-Daley LA; Gradinaru V
  • A gut bacterial amyloid promotes -synuclein aggregation and motor impairment in mice.
    Elife Volume: 9
    02/11/2020 Authors: Sampson TR; Challis C; Jain N; Moiseyenko A; Ladinsky MS; Shastri GG; Thron T; Needham BD; Horvath I; Debelius JW
  • The impact of indigenous microbes on Parkinson's disease.
    Neurobiol Dis Volume: 135 Page(s): 104426
    02/01/2020 Authors: Sampson T
  • Author Correction: A CRISPR/Cas system mediates bacterial innate immune evasion and virulence.
    Nature Volume: 570 Page(s): E30 - E31
    06/01/2019 Authors: Sampson TR; Saroj SD; Llewellyn AC; Tzeng Y-L; Weiss DS
  • Defining Dysbiosis in Disorders of Movement and Motivation.
    J Neurosci Volume: 38 Page(s): 9414 - 9422
    10/31/2018 Authors: Fields CT; Sampson TR; Bruce-Keller AJ; Kiraly DD; Hsiao EY; de Vries GJ
  • Gut Microbiota Regulate Motor Deficits and Neuroinflammation in a Model of Parkinson's Disease.
    Cell Volume: 167 Page(s): 1469 - 1480.e12
    12/01/2016 Authors: Sampson TR; Debelius JW; Thron T; Janssen S; Shastri GG; Ilhan ZE; Challis C; Schretter CE; Rocha S; Gradinaru V
  • Overview of CRISPR-Cas9 Biology.
    Cold Spring Harb Protoc Volume: 2016 Page(s): pdb.top088849
    12/01/2016 Authors: Ratner HK; Sampson TR; Weiss DS
  • The Central Nervous System and the Gut Microbiome.
    Cell Volume: 167 Page(s): 915 - 932
    11/03/2016 Authors: Sharon G; Sampson TR; Geschwind DH; Mazmanian SK
  • I can see CRISPR now, even when phage are gone: a view on alternative CRISPR-Cas functions from the prokaryotic envelope.
    Curr Opin Infect Dis Volume: 28 Page(s): 267 - 274
    06/01/2015 Authors: Ratner HK; Sampson TR; Weiss DS
  • Control of brain development, function, and behavior by the microbiome.
    Cell Host Microbe Volume: 17 Page(s): 565 - 576
    05/13/2015 Authors: Sampson TR; Mazmanian SK
  • Cas9-mediated targeting of viral RNA in eukaryotic cells.
    Proc Natl Acad Sci U S A Volume: 112 Page(s): 6164 - 6169
    05/12/2015 Authors: Price AA; Sampson TR; Ratner HK; Grakoui A; Weiss DS
  • A CRISPR-Cas system enhances envelope integrity mediating antibiotic resistance and inflammasome evasion.
    Proc Natl Acad Sci U S A Volume: 111 Page(s): 11163 - 11168
    07/29/2014 Authors: Sampson TR; Napier BA; Schroeder MR; Louwen R; Zhao J; Chin C-Y; Ratner HK; Llewellyn AC; Jones CL; Laroui H
  • CRISPR-Cas systems: new players in gene regulation and bacterial physiology.
    Front Cell Infect Microbiol Volume: 4 Page(s): 37
    01/01/2014 Authors: Sampson TR; Weiss DS
  • Exploiting CRISPR/Cas systems for biotechnology.
    Bioessays Volume: 36 Page(s): 34 - 38
    01/01/2014 Authors: Sampson TR; Weiss DS
  • Cas9-dependent endogenous gene regulation is required for bacterial virulence.
    Biochem Soc Trans Volume: 41 Page(s): 1407 - 1411
    12/01/2013 Authors: Sampson TR; Weiss DS
  • Degeneration of a CRISPR/Cas system and its regulatory target during the evolution of a pathogen.
    RNA Biol Volume: 10 Page(s): 1618 - 1622
    10/01/2013 Authors: Sampson TR; Weiss DS
  • A CRISPR/Cas system mediates bacterial innate immune evasion and virulence.
    Nature Volume: 497 Page(s): 254 - 257
    05/09/2013 Authors: Sampson TR; Saroj SD; Llewellyn AC; Tzeng Y-L; Weiss DS
  • Alternative roles for CRISPR/Cas systems in bacterial pathogenesis.
    PLoS Pathog Volume: 9 Page(s): e1003621
    01/01/2013 Authors: Sampson TR; Weiss DS
  • Rapid killing of Acinetobacter baumannii by polymyxins is mediated by a hydroxyl radical death pathway.
    Antimicrob Agents Chemother Volume: 56 Page(s): 5642 - 5649
    11/01/2012 Authors: Sampson TR; Liu X; Schroeder MR; Kraft CS; Burd EM; Weiss DS
  • Repression of bacterial lipoprotein production by Francisella novicida facilitates evasion of innate immune recognition.
    Cell Microbiol Volume: 14 Page(s): 1531 - 1543
    10/01/2012 Authors: Jones CL; Sampson TR; Nakaya HI; Pulendran B; Weiss DS
  • Subversion of host recognition and defense systems by Francisella spp.
    Microbiol Mol Biol Rev Volume: 76 Page(s): 383 - 404
    06/01/2012 Authors: Jones CL; Napier BA; Sampson TR; Llewellyn AC; Schroeder MR; Weiss DS
  • Mycobacteriophages BPs, Angel and Halo: comparative genomics reveals a novel class of ultra-small mobile genetic elements.
    Microbiology (Reading) Volume: 155 Page(s): 2962 - 2977
    09/01/2009 Authors: Sampson T; Broussard GW; Marinelli LJ; Jacobs-Sera D; Ray M; Ko C-C; Russell D; Hendrix RW; Hatfull GF
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