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Mangleburg CG, Wu T, Yalamanchili HK, Guo C, Hsieh YC, Duong DM, Dammer EB, De Jager PL, Seyfried NT, Liu Z, Shulman JM. Integrated analysis of the aging brain transcriptome and proteome in tauopathy. Mol Neurodegener 2020; 15:56. [PMID: 32993812 PMCID: PMC7526226 DOI: 10.1186/s13024-020-00405-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 09/18/2020] [Indexed: 01/09/2023] Open
Abstract
Background Tau neurofibrillary tangle pathology characterizes Alzheimer’s disease and other neurodegenerative tauopathies. Brain gene expression profiles can reveal mechanisms; however, few studies have systematically examined both the transcriptome and proteome or differentiated Tau- versus age-dependent changes. Methods Paired, longitudinal RNA-sequencing and mass-spectrometry were performed in a Drosophila model of tauopathy, based on pan-neuronal expression of human wildtype Tau (TauWT) or a mutant form causing frontotemporal dementia (TauR406W). Tau-induced, differentially expressed transcripts and proteins were examined cross-sectionally or using linear regression and adjusting for age. Hierarchical clustering was performed to highlight network perturbations, and we examined overlaps with human brain gene expression profiles in tauopathy. Results TauWT induced 1514 and 213 differentially expressed transcripts and proteins, respectively. TauR406W had a substantially greater impact, causing changes in 5494 transcripts and 697 proteins. There was a ~ 70% overlap between age- and Tau-induced changes and our analyses reveal pervasive bi-directional interactions. Strikingly, 42% of Tau-induced transcripts were discordant in the proteome, showing opposite direction of change. Tau-responsive gene expression networks strongly implicate innate immune activation. Cross-species analyses pinpoint human brain gene perturbations specifically triggered by Tau pathology and/or aging, and further differentiate between disease amplifying and protective changes. Conclusions Our results comprise a powerful, cross-species functional genomics resource for tauopathy, revealing Tau-mediated disruption of gene expression, including dynamic, age-dependent interactions between the brain transcriptome and proteome.
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Affiliation(s)
- Carl Grant Mangleburg
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA.,Medical Scientist Training Program, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Timothy Wu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA.,Medical Scientist Training Program, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Hari K Yalamanchili
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Caiwei Guo
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yi-Chen Hsieh
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Duc M Duong
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Eric B Dammer
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Philip L De Jager
- Center for Translational & Computational Neuroimmunology, Department of Neurology and Taub Institute for the study of Alzheimer's disease and the aging brain, Columbia University Medical Center, New York, NY, 10032, USA.,Cell Circuits Program, Broad Institute, Cambridge, MA, 02142, USA
| | - Nicholas T Seyfried
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322, USA.,Department of Neurology, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Zhandong Liu
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, USA.,Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, 1250 Moursund St., Suite N.1150, Houston, TX, 77030, USA
| | - Joshua M Shulman
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Neuroscience, Baylor College of Medicine, Houston, TX, 77030, USA. .,Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, 1250 Moursund St., Suite N.1150, Houston, TX, 77030, USA. .,Department of Neurology, Baylor College of Medicine, Houston, TX, 77030, USA.
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Effects of optogenetic stimulation of basal forebrain parvalbumin neurons on Alzheimer's disease pathology. Sci Rep 2020; 10:15456. [PMID: 32963298 PMCID: PMC7508947 DOI: 10.1038/s41598-020-72421-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022] Open
Abstract
Neuronal activity can modify Alzheimer’s disease pathology. Overexcitation of neurons can facilitate disease progression whereas the induction of cortical gamma oscillations can reduce amyloid load and improve cognitive functions in mouse models. Although previous studies have induced cortical gamma oscillations by either optogenetic activation of cortical parvalbumin-positive (PV+) neurons or sensory stimuli, it is still unclear whether other approaches to induce gamma oscillations can also be beneficial. Here we show that optogenetic activation of PV+ neurons in the basal forebrain (BF) increases amyloid burden, rather than reducing it. We applied 40 Hz optical stimulation in the BF by expressing channelrhodopsin-2 (ChR2) in PV+ neurons of 5xFAD mice. After 1-h induction of cortical gamma oscillations over three days, we observed the increase in the concentration of amyloid-β42 in the frontal cortical region, but not amyloid-β40. Amyloid plaques were accumulated more in the medial prefrontal cortex and the septal nuclei, both of which are targets of BF PV+ neurons. These results suggest that beneficial effects of cortical gamma oscillations on Alzheimer’s disease pathology can depend on the induction mechanisms of cortical gamma oscillations.
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53
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Roberts ER, Dossat AM, Del Mar Cortijo M, Brundin P, Wesson DW. Alterations in odor hedonics in the 5XFAD Alzheimer's disease mouse model and the influence of sex. Behav Neurosci 2020; 134:407-416. [PMID: 32757584 DOI: 10.1037/bne0000400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Olfactory impairments, including deficits in odor detection, discrimination, recognition, and changes in odor hedonics, are reported in the early stages of Alzheimer's disease (AD). Rodent models of AD display deficits in odor learning, detection, and discrimination-recapitulating the clinical condition. However, the impact of familial AD genetic mutations on odor hedonics is unknown. We tested 2-, 4-, and 6-month-old 5XFAD (Tg6799) mice in the 5-port odor multiple-choice task designed to assay a variety of odor-guided behaviors, including odor preferences/hedonics. We found that 5XFAD mice investigated odors longer than controls, an effect that was driven by 6-month-old mice. Interestingly, this effect was carried by females in the 5XFAD group, who investigated odors longer than age-matched males. Upon examining behavior directed toward individual odors to test for aberrant odor preferences, we uncovered that 5XFAD females at several ages displayed heightened preferences toward some of the odors, indicating aberrant hedonics. We observed no impairments in the ability to engage in the task in 5XFAD mice. Taken together, 5XFAD mice, particularly 5XFAD females, displayed prolonged odor investigation behavior and enhanced preferences to certain odors. The data provide insight into hedonic alterations that may occur in AD mouse models and how these are influenced by biological sex. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
| | - Amanda M Dossat
- Department of Pharmacology and Therapeutics, University of Florida
| | | | | | - Daniel W Wesson
- Department of Pharmacology and Therapeutics, University of Florida
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54
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Biophysical studies of protein misfolding and aggregation in in vivo models of Alzheimer's and Parkinson's diseases. Q Rev Biophys 2020; 49:e22. [PMID: 32493529 DOI: 10.1017/s0033583520000025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Neurodegenerative disorders, including Alzheimer's (AD) and Parkinson's diseases (PD), are characterised by the formation of aberrant assemblies of misfolded proteins. The discovery of disease-modifying drugs for these disorders is challenging, in part because we still have a limited understanding of their molecular origins. In this review, we discuss how biophysical approaches can help explain the formation of the aberrant conformational states of proteins whose neurotoxic effects underlie these diseases. We discuss in particular models based on the transgenic expression of amyloid-β (Aβ) and tau in AD, and α-synuclein in PD. Because biophysical methods have enabled an accurate quantification and a detailed understanding of the molecular mechanisms underlying protein misfolding and aggregation in vitro, we expect that the further development of these methods to probe directly the corresponding mechanisms in vivo will open effective routes for diagnostic and therapeutic interventions.
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55
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Weible AP, Stebritz AJ, Wehr M. 5XFAD mice show early-onset gap encoding deficits in the auditory cortex. Neurobiol Aging 2020; 94:101-110. [PMID: 32599514 DOI: 10.1016/j.neurobiolaging.2020.05.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 05/19/2020] [Accepted: 05/24/2020] [Indexed: 12/26/2022]
Abstract
Early detection will be crucial for effective treatment or prevention of Alzheimer's disease. The identification and validation of early, noninvasive biomarkers is therefore key to avoiding the most devastating aspects of Alzheimer's disease. Measures of central auditory processing such as gap detection have recently emerged as potential biomarkers in both human patients and the 5XFAD mouse model of Alzheimer's disease. Full validation of gap detection deficits as a biomarker will require detailed understanding of the underlying neuropathology, including which brain structures are involved and how the operation of neural circuits is affected. Here we show that 5XFAD mice exhibit gap detection deficits as early as 2 months of age, well before development of Alzheimer's disease-associated pathology. We then examined responses of neurons in the auditory cortex to gaps in white noise. Both gap responses and baseline firing rates were robustly and progressively degraded in 5XFAD mice compared to littermate controls. These impairments were first evident at 2-4 months of age in males, and 4-6 months in females. This demonstrates early-onset impairments to the central auditory system, which could be due to damage in the auditory cortex, upstream subcortical structures, or both.
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Affiliation(s)
- Aldis P Weible
- Department of Psychology, Institute of Neuroscience, Eugene, OR, USA
| | - Amanda J Stebritz
- Department of Psychology, Institute of Neuroscience, Eugene, OR, USA
| | - Michael Wehr
- Department of Psychology, Institute of Neuroscience, Eugene, OR, USA.
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" Bridging the Gap" Everything that Could Have Been Avoided If We Had Applied Gender Medicine, Pharmacogenetics and Personalized Medicine in the Gender-Omics and Sex-Omics Era. Int J Mol Sci 2019; 21:ijms21010296. [PMID: 31906252 PMCID: PMC6982247 DOI: 10.3390/ijms21010296] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/21/2019] [Accepted: 12/30/2019] [Indexed: 02/06/2023] Open
Abstract
Gender medicine is the first step of personalized medicine and patient-centred care, an essential development to achieve the standard goal of a holistic approach to patients and diseases. By addressing the interrelation and integration of biological markers (i.e., sex) with indicators of psychological/cultural behaviour (i.e., gender), gender medicine represents the crucial assumption for achieving the personalized health-care required in the third millennium. However, ‘sex’ and ‘gender’ are often misused as synonyms, leading to frequent misunderstandings in those who are not deeply involved in the field. Overall, we have to face the evidence that biological, genetic, epigenetic, psycho-social, cultural, and environmental factors mutually interact in defining sex/gender differences, and at the same time in establishing potential unwanted sex/gender disparities. Prioritizing the role of sex/gender in physiological and pathological processes is crucial in terms of efficient prevention, clinical signs’ identification, prognosis definition, and therapy optimization. In this regard, the omics-approach has become a powerful tool to identify sex/gender-specific disease markers, with potential benefits also in terms of socio-psychological wellbeing for each individual, and cost-effectiveness for National Healthcare systems. “Being a male or being a female” is indeed important from a health point of view and it is no longer possible to avoid “sex and gender lens” when approaching patients. Accordingly, personalized healthcare must be based on evidence from targeted research studies aimed at understanding how sex and gender influence health across the entire life span. The rapid development of genetic tools in the molecular medicine approaches and their impact in healthcare is an example of highly specialized applications that have moved from specialists to primary care providers (e.g., pharmacogenetic and pharmacogenomic applications in routine medical practice). Gender medicine needs to follow the same path and become an established medical approach. To face the genetic, molecular and pharmacological bases of the existing sex/gender gap by means of omics approaches will pave the way to the discovery and identification of novel drug-targets/therapeutic protocols, personalized laboratory tests and diagnostic procedures (sex/gender-omics). In this scenario, the aim of the present review is not to simply resume the state-of-the-art in the field, rather an opportunity to gain insights into gender medicine, spanning from molecular up to social and psychological stances. The description and critical discussion of some key selected multidisciplinary topics considered as paradigmatic of sex/gender differences and sex/gender inequalities will allow to draft and design strategies useful to fill the existing gap and move forward.
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57
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Matthews DG, Caruso M, Murchison CF, Zhu JY, Wright KM, Harris CJ, Gray NE, Quinn JF, Soumyanath A. Centella Asiatica Improves Memory and Promotes Antioxidative Signaling in 5XFAD Mice. Antioxidants (Basel) 2019; 8:antiox8120630. [PMID: 31817977 PMCID: PMC6943631 DOI: 10.3390/antiox8120630] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/03/2019] [Accepted: 12/06/2019] [Indexed: 12/11/2022] Open
Abstract
Centella asiatica (CA) herb is a traditional medicine, long reputed to provide cognitive benefits. We have reported that CA water extract (CAW) treatment improves cognitive function of aged Alzheimer’s disease (AD) model Tg2576 and wild-type (WT) mice, and induces an NRF2-regulated antioxidant response in aged WT mice. Here, CAW was administered to AD model 5XFAD female and male mice and WT littermates (age: 7.6 +/− 0.6 months), and object recall and contextual fear memory were tested after three weeks treatment. CAW’s impact on amyloid-β plaque burden, and markers of neuronal oxidative stress and synaptic density, was assessed after five weeks treatment. CAW antioxidant activity was evaluated via nuclear transcription factor (erythroid-derived 2)-like 2 (NRF2) and NRF2-regulated antioxidant response element gene expression. Memory improvement in both genders and genotypes was associated with dose-dependent CAW treatment without affecting plaque burden, and marginally increased synaptic density markers in the hippocampus and prefrontal cortex. CAW treatment increased Nrf2 in hippocampus and other NRF2 targets (heme oxygenase-1, NAD(P)H quinone dehydrogenase 1, glutamate-cysteine ligase catalytic subunit). Reduced plaque-associated SOD1, an indicator of oxidative stress, was observed in the hippocampi and cortices of CAW-treated 5XFAD mice. We postulate that CAW treatment leads to reduced oxidative stress, contributing to improved neuronal health and cognition.
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Affiliation(s)
- Donald G Matthews
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
| | - Maya Caruso
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
| | - Charles F Murchison
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jennifer Y Zhu
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
| | - Kirsten M Wright
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
| | - Christopher J Harris
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
- Parkinson’s Disease Research Education and Clinical Care Center, Veterans’ Administration Portland Health Care System, Portland, OR 97239, USA
| | - Nora E Gray
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
| | - Joseph F Quinn
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
- Parkinson’s Disease Research Education and Clinical Care Center, Veterans’ Administration Portland Health Care System, Portland, OR 97239, USA
| | - Amala Soumyanath
- Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA; (D.G.M.); (M.C.); (C.F.M.); (J.Y.Z.); (K.M.W.); (C.J.H.); (N.E.G.); (J.F.Q.)
- Correspondence: ; Tel.: +1-503-494-6878
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Gatt A, Whitfield DR, Ballard C, Doherty P, Williams G. Alzheimer's Disease Progression in the 5×FAD Mouse Captured with a Multiplex Gene Expression Array. J Alzheimers Dis 2019; 72:1177-1191. [PMID: 31683485 DOI: 10.3233/jad-190805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is an incurable complex neurodegenerative condition with no new therapies licensed in the past 20 years. AD progression is characterized by the up- and downregulation of distinct biological processes that can be followed through the expression level changes of associated genes and gene networks. OBJECTIVE Our study aims to establish a multiplex gene expression tracking platform to follow disease progression in an animal model facilitating the study of treatment paradigms. METHODS We have established a multiplex platform covering 47 key genes related to immunological, neuronal, mitochondrial, and autophagy cell types and processes that capture disease progression in the 5×FAD mouse model. RESULTS We show that the immunological response is the most pronounced change in aged 5×FAD mice (8 months and above), and in agreement with early stage human disease samples, observe an initial downregulation of microglial genes in one-month-old animals. The less dramatic downregulation of neuronal and mitochondrial gene sets is also reported. CONCLUSION This study provides the basis for a quantitative multi-dimensional platform to follow AD progression and monitor the efficacy of treatments in an animal model.
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Affiliation(s)
- Ariana Gatt
- Wolfson Centre for Age-Related Diseases, King's College London, London Bridge, London, UK
| | - David R Whitfield
- Wolfson Centre for Age-Related Diseases, King's College London, London Bridge, London, UK
| | - Clive Ballard
- College of Medicine and Health, University of Exeter, Exeter, UK
| | - Patrick Doherty
- Wolfson Centre for Age-Related Diseases, King's College London, London Bridge, London, UK
| | - Gareth Williams
- Wolfson Centre for Age-Related Diseases, King's College London, London Bridge, London, UK
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Zhai Y, Haresi AJ, Huang L, Lang D. Differences in tumor initiation and progression of melanoma in the Braf CA ;Tyr-CreERT2;Pten f/f model between male and female mice. Pigment Cell Melanoma Res 2019; 33:119-121. [PMID: 31449725 DOI: 10.1111/pcmr.12821] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yougang Zhai
- Department of Dermatology, Boston University, Boston, MA, USA
| | - Adil J Haresi
- Department of Dermatology, Boston University, Boston, MA, USA
| | - Lee Huang
- Department of Dermatology, Boston University, Boston, MA, USA
| | - Deborah Lang
- Department of Dermatology, Boston University, Boston, MA, USA
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60
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Kim DH, Jang YS, Jeon WK, Han JS. Assessment of Cognitive Phenotyping in Inbred, Genetically Modified Mice, and Transgenic Mouse Models of Alzheimer's Disease. Exp Neurobiol 2019; 28:146-157. [PMID: 31138986 PMCID: PMC6526110 DOI: 10.5607/en.2019.28.2.146] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 03/18/2019] [Accepted: 03/25/2019] [Indexed: 01/03/2023] Open
Abstract
Genetically modified mouse models are being used predominantly to understand brain functions and diseases. Well-designed and controlled behavioral analyses of genetically modified mice have successfully led to the identification of gene functions, understanding of brain diseases, and development of treatments. Recently, complex and higher cognitive functions have been examined in mice with genetic mutations. Therefore, research strategies for cognitive phenotyping should be sophisticated and evolve to convey the exact meaning of the findings and provide robust translational tools for testing hypotheses and developing treatments. This review addresses issues of experimental design and discusses studies that have examined cognitive function using mouse strain differences, genetically modified mice, and transgenic mice for Alzheimer's disease.
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Affiliation(s)
- Dong-Hee Kim
- Department of Biological Sciences, Konkuk University, Seoul 05029, Korea
| | - Yoon-Sun Jang
- Department of Biological Sciences, Konkuk University, Seoul 05029, Korea
| | - Won Kyung Jeon
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea.,Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology, Seoul 02792, Korea
| | - Jung-Soo Han
- Department of Biological Sciences, Konkuk University, Seoul 05029, Korea
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