Morphometric Similarity Patterning of Amyloid-β and Tau Proteins Correlates with Transcriptomics in the Alzheimer’s Disease Continuum
Year:
2024
Type of item:
Articolo in Rivista
Tipologia ANVUR:
Articolo su rivista
Language:
Inglese
Referee:
No
Name of journal:
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
ISSN of journal:
1422-0067
N° Volume:
25
Number or Folder:
23
Page numbers:
1-16
Keyword:
T1-weighted MRI; Diffusion MRI; ADNI; Partial Least Squares; Gene expression; Enrich- 13 ment analysis
Short description of contents:
Bridging the gap between cortical morphometric remodeling and gene expression can help 1
to clarify the effects of the selective brain accumulation of Amyloid-β (Aβ) and tau proteins occurring 2
in the Alzheimer’s Disease (AD). To this aim, we derived morphometric similarity (MS) networks from 3
126 Aβ and tau positive (Aβ+/tau+) and 172 Aβ-/tau- subjects, and we investigated the association 4
between group-wise regional MS differences and transcriptional correlates thanks to an imaging 5
transcriptomics approach grounding on the Allen Human Brain Atlas (AHBA). The expressed gene 6
with the highest correlation with MS alterations was BCHE, a gene related to Aβ homeostasis. In 7
addition, notably, among the most promising results derived from the enrichment analysis, we found 8
the immune response as biological process, and astrocytes, microglia, and oligodendrocyte precursors 9
for the cell types. In summary, by relating cortical MS and AHBA-derived transcriptomics, we were 10
able to retrieve findings suggesting the biological mechanisms underlying the Aβ and tau-induced 11
cortical MS alterations in the AD continuum.