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Puvogel S, Alsema A, North HF, Webster MJ, Weickert CS, Eggen BJL. Single-Nucleus RNA-Seq Characterizes the Cell Types Along the Neuronal Lineage in the Adult Human Subependymal Zone and Reveals Reduced Oligodendrocyte Progenitor Abundance with Age. eNeuro 2024; 11:ENEURO.0246-23.2024. [PMID: 38351133 PMCID: PMC10913050 DOI: 10.1523/eneuro.0246-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 01/15/2024] [Accepted: 01/23/2024] [Indexed: 03/06/2024] Open
Abstract
The subependymal zone (SEZ), also known as the subventricular zone (SVZ), constitutes a neurogenic niche that persists during postnatal life. In humans, the neurogenic potential of the SEZ declines after the first year of life. However, studies discovering markers of stem and progenitor cells highlight the neurogenic capacity of progenitors in the adult human SEZ, with increased neurogenic activity occurring under pathological conditions. In the present study, the complete cellular niche of the adult human SEZ was characterized by single-nucleus RNA sequencing, and compared between four youth (age 16-22) and four middle-aged adults (age 44-53). We identified 11 cellular clusters including clusters expressing marker genes for neural stem cells (NSCs), neuroblasts, immature neurons, and oligodendrocyte progenitor cells. The relative abundance of NSC and neuroblast clusters did not differ between the two age groups, indicating that the pool of SEZ NSCs does not decline in this age range. The relative abundance of oligodendrocyte progenitors and microglia decreased in middle-age, indicating that the cellular composition of human SEZ is remodeled between youth and adulthood. The expression of genes related to nervous system development was higher across different cell types, including NSCs, in youth as compared with middle-age. These transcriptional changes suggest ongoing central nervous system plasticity in the SEZ in youth, which declined in middle-age.
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Affiliation(s)
- Sofía Puvogel
- Section Molecular Neurobiology, Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen 9700 AD, The Netherlands
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen 6500 HB, The Netherlands
| | - Astrid Alsema
- Section Molecular Neurobiology, Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen 9700 AD, The Netherlands
| | - Hayley F North
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Sydney, New South Wales 2031, Australia
- School of Psychiatry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Maree J Webster
- Laboratory of Brain Research, Stanley Medical Research Institute, Rockville 20850, Maryland
| | - Cynthia Shannon Weickert
- Schizophrenia Research Laboratory, Neuroscience Research Australia, Sydney, New South Wales 2031, Australia
- School of Psychiatry, University of New South Wales, Sydney, New South Wales 2052, Australia
- Department of Neuroscience and Physiology, Upstate Medical University, Syracuse, New York 13201
| | - Bart J L Eggen
- Section Molecular Neurobiology, Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen 9700 AD, The Netherlands
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Schartz ND, Liang HY, Carvalho K, Chu SH, Mendoza-Arvilla A, Petrisko TJ, Gomez-Arboledas A, Mortazavi A, Tenner AJ. C5aR1 antagonism suppresses inflammatory glial gene expression and alters cellular signaling in an aggressive Alzheimer's model. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.22.554306. [PMID: 37662399 PMCID: PMC10473603 DOI: 10.1101/2023.08.22.554306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Alzheimer's disease (AD) is the leading cause of dementia in older adults, and the need for effective, sustainable therapeutic targets is imperative. Pharmacologic inhibition of C5aR1 reduces plaque load, gliosis and memory deficits in animal models. However, the cellular basis underlying this neuroprotection and which processes were the consequence of amyloid reduction vs alteration of the response to amyloid were unclear. In the Arctic model, the C5aR1 antagonist PMX205 did not reduce plaque load, but deficits in short-term memory in female mice were prevented. Hippocampal single cell and single nucleus RNA-seq clusters revealed C5aR1 dependent and independent gene expression and cell-cell communication. Microglial clusters containing neurotoxic disease-associated microglial genes were robustly upregulated in Arctic mice and drastically reduced with PMX205 treatment, while genes in microglia clusters that were overrepresented in the Arctic-PMX205 vs Arctic group were associated with synapse organization and transmission and learning. PMX205 treatment also reduced some A-1 astrocyte genes. In spite of changes in transcript levels, overall protein levels of some reactive glial markers were relatively unchanged by C5aR1 antagonism, as were clusters associated with protective responses to injury. C5aR1 inhibition promoted signaling pathways associated with cell growth and repair, such as TGFβ and FGF, in Arctic mice, while suppressing inflammatory pathways including PROS, Pecam1, and EPHA. In conclusion, pharmacologic C5aR1 inhibition prevents cognitive loss, limits microglial polarization to a detrimental inflammatory state and permits neuroprotective responses, as well as leaving protective functions of complement intact, making C5aR1 antagonism an attractive therapeutic strategy for individuals with AD.
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Affiliation(s)
- Nicole D. Schartz
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697
| | - Heidi Y. Liang
- Department of Developmental & Cell Biology, University of California, Irvine, Irvine, CA 92697
| | - Klebea Carvalho
- Department of Developmental & Cell Biology, University of California, Irvine, Irvine, CA 92697
| | - Shu-Hui Chu
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697
| | - Adrian Mendoza-Arvilla
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697
| | - Tiffany J. Petrisko
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697
| | - Angela Gomez-Arboledas
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697
| | - Ali Mortazavi
- Department of Developmental & Cell Biology, University of California, Irvine, Irvine, CA 92697
| | - Andrea J. Tenner
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, CA 92697
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA 92697
- Department of Pathology and Laboratory Medicine, University of California, Irvine, School of Medicine, Irvine, CA 92697
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Romagnano V, Sokolov AN, Steinwand P, Fallgatter AJ, Pavlova MA. Face pareidolia in male schizophrenia. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2022; 8:112. [PMID: 36517504 PMCID: PMC9751144 DOI: 10.1038/s41537-022-00315-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/09/2022] [Indexed: 05/22/2023]
Abstract
Faces are valuable signals for efficient social interaction. Yet, social cognition including the sensitivity to a coarse face scheme may be deviant in schizophrenia (SZ). Tuning to faces in non-face images such as shadows, grilled toasts, or ink blots is termed face pareidolia. This phenomenon is poorly investigated in SZ. Here face tuning was assessed in 44 male participants with SZ and person-by-person matched controls by using recently created Face-n-Thing images (photographs of non-face objects to a varying degree resembling a face). The advantage of these images is that single components do not automatically trigger face processing. Participants were administered a set of images with upright and inverted (180° in the image plane) orientation. In a two-alternative forced-choice paradigm, they had to indicate whether an image resembled a face. The findings showed that: (i) With upright orientation, SZ patients exhibited deficits in face tuning: they provided much fewer face responses than controls. (ii) Inversion generally hindered face pareidolia. However, while in neurotypical males, inversion led to a drastic drop in face impression, in SZ, the impact of orientation was reduced. (iii) Finally, in accord with the signal detection theory analysis, the sensitivity index (d-prime) was lower in SZ, whereas no difference occurred in decision criterion. The outcome suggests altered face pareidolia in SZ is caused by lower face sensitivity rather than by alterations in cognitive bias. Comparison of these findings with earlier evidence confirms that tuning to social signals is lower in SZ, and warrants tailored brain imaging research.
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Affiliation(s)
- Valentina Romagnano
- Department of Psychiatry and Psychotherapy, Medical School and University Hospital, Eberhard Karls University of Tübingen, and Tübingen Center for Mental Health (TüCMH), Tübingen, Germany
| | - Alexander N Sokolov
- Department of Psychiatry and Psychotherapy, Medical School and University Hospital, Eberhard Karls University of Tübingen, and Tübingen Center for Mental Health (TüCMH), Tübingen, Germany
| | - Patrick Steinwand
- Department of Psychiatry and Psychotherapy, Medical School and University Hospital, Eberhard Karls University of Tübingen, and Tübingen Center for Mental Health (TüCMH), Tübingen, Germany
| | - Andreas J Fallgatter
- Department of Psychiatry and Psychotherapy, Medical School and University Hospital, Eberhard Karls University of Tübingen, and Tübingen Center for Mental Health (TüCMH), Tübingen, Germany
| | - Marina A Pavlova
- Department of Psychiatry and Psychotherapy, Medical School and University Hospital, Eberhard Karls University of Tübingen, and Tübingen Center for Mental Health (TüCMH), Tübingen, Germany.
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Barcelona V, Huang Y, Caceres BA, Newhall KP, Hui Q, Cerdeña JP, Crusto CA, Sun YV, Taylor JY. Experiences of Trauma and DNA Methylation Profiles among African American Mothers and Children. Int J Mol Sci 2022; 23:ijms23168951. [PMID: 36012217 PMCID: PMC9408935 DOI: 10.3390/ijms23168951] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 11/18/2022] Open
Abstract
Potentially traumatic experiences have been associated with chronic diseases. Epigenetic mechanisms, including DNA methylation (DNAm), have been proposed as an explanation for this association. We examined the association of experiences of trauma with epigenome-wide DNAm among African American mothers (n = 236) and their children aged 3–5 years (n = 232; N = 500), using the Life Events Checklist-5 (LEC) and Traumatic Events Screening Inventory—Parent Report Revised (TESI-PRR). We identified no DNAm sites significantly associated with potentially traumatic experience scores in mothers. One CpG site on the ENOX1 gene was methylome-wide-significant in children (FDR-corrected q-value = 0.05) from the TESI-PRR. This protein-coding gene is associated with mental illness, including unipolar depression, bipolar, and schizophrenia. Future research should further examine the associations between childhood trauma, DNAm, and health outcomes among this understudied and high-risk group. Findings from such longitudinal research may inform clinical and translational approaches to prevent adverse health outcomes associated with epigenetic changes.
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Affiliation(s)
- Veronica Barcelona
- Center for Research on People of Color, Columbia University School of Nursing, 560 West 168th St., New York, NY 10032, USA
| | | | - Billy A. Caceres
- Center for Research on People of Color, Columbia University School of Nursing, 560 West 168th St., New York, NY 10032, USA
| | - Kevin P. Newhall
- School of Medicine, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA
| | - Qin Hui
- Department of Epidemiology, Emory University Rollins School of Public Health, 1518 Clifton Road NE, Atlanta, GA 30322, USA
| | - Jessica P. Cerdeña
- MD-PhD Program, Yale School of Medicine, 367 Cedar St., New Haven, CT 06520, USA
- Department of Anthropology and Institute for Collaboration on Health, Intervention, and Policy (InCHIP), University of Connecticut, 354 Mansfield Rd., Storrs, CT 06269, USA
| | - Cindy A. Crusto
- Department of Psychiatry, Yale School of Medicine, 300 George St., New Haven, CT 06511, USA
- Department of Psychology, University of Pretoria, Private Bag x 20, Hatfield, Pretoria 0028, South Africa
| | - Yan V. Sun
- Department of Epidemiology, Emory University Rollins School of Public Health, 1518 Clifton Road NE, Atlanta, GA 30322, USA
| | - Jacquelyn Y. Taylor
- Center for Research on People of Color, Columbia University School of Nursing, 560 West 168th St., New York, NY 10032, USA
- Correspondence: ; Tel.: +1-(212)-342-3986
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