Kentaro Yamamoto

Mr. Kentaro Yamamoto

orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 June 2023 in BMC Bioinformatics
Verified
Journal Article
Open access
PDF file
KTKoki Tsuyuzaki
Koki Tsuyuzaki
KYKentaro Yamamoto
Kentaro Yamamoto
YTYu Toyoshima
Yu Toyoshima
HSHirofumi Sato
Hirofumi Sato
MKManami Kanamori
Manami Kanamori
INItoshi Nikaido
Itoshi Nikaido
Background: In the field of neuroscience, neural modules and circuits that control biological functions have been found throughout entire neural networks. Correlations in neural activity can be used to identify such neural modules. Recent technological advances enable us to measure whole-brain neural activity with single-cell resolution in several species including $$Caenorhabditis\ elegans$$Caenorhabditiselegans . Because current neural activity data inC. eleganscontain many missing data points, it is necessary to merge results from as many animals as possible to obtain more reliable functional modules.Results: In this work, we developed a new time-series clustering method, , to identify functional modules using whole-brain activity data fromC. elegans. uses a distance measure, modified shape-based distance to account for the lags and the mutual inhibition of cell–cell interactions and applies the tensor decomposition algorithm multi-view clustering based on matrix integration using the higher orthogonal iteration of tensors (HOOI) algorithm (), which can estimate both the weight to account for the reliability of data from each animal and the clusters that are common across animals.Conclusion: We applied the method to 24 individualC. elegansand successfully found some known functional modules. Compared with a widely used consensus clustering method to aggregate multiple clustering results, showed higher silhouette coefficients. Our simulation also showed that is robust to contamination from noisy data. is freely available as an /CRAN packagehttps://cran.r-project.org/web/packages/WormTensor.

Verified
Journal Article
Open access
PDF file
KNKazuki Nakamae
Kazuki Nakamae
TSTakayuki Suzuki
Takayuki Suzuki
SYSora Yonezawa
Sora Yonezawa
KYKentaro Yamamoto
Kentaro Yamamoto
TKTaro Kakuzaki
Taro Kakuzaki
Hidemasa BonoHidemasa Bono
Hidemasa Bono
Base-editing technologies, particularly cytosine base editors (CBEs), allow precise gene modification without introducing double-strand breaks; however, unintended RNA off-target effects remain a critical concern and are under studied. To address this gap, we developed the Pipeline for CRISPR-induced Transcriptome-wide Unintended RNA Editing (PiCTURE), a standardized computational pipeline for detecting and quantifying transcriptome-wide CBE-induced RNA off-target events. PiCTURE identifies both canonical ACW (W = A or T/U) motif-dependent and non-canonical RNA off-targets, revealing a broader WCW motif that underlies many unanticipated edits. Additionally, we developed two machine learning models based on the DNABERT-2 language model, termed STL and SNL, which outperformed motif-only approaches in terms of accuracy, precision, recall, and F1 score. To demonstrate the practical application of our predictive model for CBE-induced RNA off-target risk, we integrated PiCTURE outputs with the Predicting RNA Off-target compared with Tissue-specific Expression for Caring for Tissue and Organ (PROTECTiO) pipeline and estimated RNA off-target risk for each transcript showing tissue-specific expression. The analysis revealed differences among tissues: while the brain and ovaries exhibited relatively low off-target burden, the colon and lungs displayed relatively high risks. Our study provides a comprehensive framework for RNA off-target profiling, emphasizing the importance of advanced machine learning-based classifiers in CBE safety evaluations and offering valuable insights to inform the development of safer genome-editing therapies.

22 January 2025 in bioRxiv
Verified
Preprint
Open access
PDF file
KNKazuki Nakamae
Kazuki Nakamae
TSTakayuki Suzuki
Takayuki Suzuki
SYSora Yonezawa
Sora Yonezawa
KYKentaro Yamamoto
Kentaro Yamamoto
TKTaro Kakuzaki
Taro Kakuzaki
Hidemasa BonoHidemasa Bono
Hidemasa Bono
Base-editing technologies, particularly cytosine base editors (CBEs), allow precise gene modification without introducing double-strand breaks; however, unintended RNA off-target effects remain a critical concern and are under-studied. To address this gap, we developed PiCTURE, a standardized computational pipeline for detecting and quantifying transcriptome-wide CBE-induced RNA off-target events. PiCTURE identifies both canonical ACW (W = A or T/U) motif-dependent and non-canonical RNA off-targets, revealing a broader WCW motif that underlies many unanticipated edits. Additionally, we developed two machine learning models based on the DNABERT-2 language model, termed STL and SNL, which outperformed motif-only approaches in terms of accuracy, precision, recall, and F1 score. To demonstrate the practical application of our predictive model for CBE-induced RNA off-target risk, we integrated PiCTURE outputs with the PROTECTiO pipeline and estimated RNA off-target risk for each transcript showing tissue-specific expression. The analysis revealed differences among tissues: while the brain and ovaries exhibited relatively low off-target burden, the colon and lungs displayed relatively high risks. Our study provides a comprehensive frame-work for RNA off-target profiling, emphasizing the importance of advanced machine learning-based classifiers in CBE safety evaluations and offering valuable insights for the development of safer genome-editing therapies.