10 major claims checked against the paper's own evidence: all adequately supported.
supportedAbstractReviewers 1, 3
The dataset enables joint analysis of protein-coding and non-coding transcriptomes at single-cell and subcellular resolution.
The paper demonstrates through analyses of cell type specificity, nuclear compartmentalization, and tRNA repertoires that the data indeed captures both coding and non-coding transcriptomes.
Evidence: Results sections on cell type specificity, nuclear compartmentalization, tRNA analysis, and cell cycle/senescence show joint analysis.
“By simultaneously profiling both polyadenylated and non-polyadenylated transcripts, the resulting dataset enables joint analysis of the protein-coding and non-coding transcriptomes at single-cell and subcellular resolution.”
supportedResults, Cell type specificity of ncRNAsReviewers 1, 2, 3
A greater proportion of non-coding genes are differentially expressed by single cell types compared to protein-coding genes.
The paper shows that when normalized by the number of annotated genes, a larger fraction of lncRNAs than protein-coding genes are unique DEGs, and non-coding genes comprise 75.6% of unique DEGs.
Evidence: Figure 3 and associated text: 'When normalized by the total number of annotated genes of each biotype in the human genome, a larger fraction of lncRNAs than protein-coding genes were DEGs uniquely in a single cell type.'
“When normalized by the total number of annotated genes of each biotype in the human genome, a larger fraction of lncRNAs than protein-coding genes were DEGs uniquely in a single cell type (“unique DEGs”).”
supportedResults, Cell type specificity of tRNA repertoiresReviewers 1, 2, 3
tRNA repertoires are cell type-specific and this specificity is not simply explained by differences in codon usage across cell types.
The paper demonstrates cell type-specific tRNA profiles via correlation analysis and shows that theoretical translation efficiency is not significantly higher than random pairings, indicating other factors drive specificity.
Evidence: Results section on tRNA cell type specificity and Figure 5: 'tTEs calculated from our dataset indicated well-matched tRNA supply and demand for most cell types... observed tTEs were not elevated relative to values calculated from random pairings of tRNA repertoires and amino acid usages.'
“Taken together, these analyses suggest that while tRNA pools are globally well-aligned to translational demands, other factors besides translational demands shape tRNA repertoires in a cell type-specific manner.”
supportedResults, ncRNAs dynamics throughout the cell cycle and in cells expressing senescence-associated transcriptsReviewer 1
We identified non-coding genes with putative roles in cell division and growth arrest.
The paper identifies ncRNAs consistently upregulated in S phase and in CDKN2A+ MKI67- cells, providing candidates for further study.
Evidence: Results section on cell cycle and senescence: 'multiple ncRNA genes that were consistently upregulated in each phase... a total of 269 putative senescence-associated ncRNA genes enriched in CDKN2A+ MKI67− cells.'
“We identified multiple ncRNA genes that were consistently upregulated in each phase ()... a total of 269 putative senescence-associated ncRNA genes enriched in CDKN2A+ MKI67− cells across cell types ().”
supportedDiscussionReviewer 1
Our work establishes a resource for investigating the landscape of non-coding RNAs across a diverse set of human tissues and cell types.
The paper presents a comprehensive dataset and multiple analyses that demonstrate its utility, establishing it as a resource for the community.
Evidence: The entire paper, including the dataset generation and the vignettes showing utility.
“Our work establishes a landmark resource for surveying the human non-coding RNA landscape.”
supportedAbstractReviewer 2
The dataset enables joint analysis of the protein-coding and non-coding transcriptomes at single-cell and subcellular resolution.
The paper presents evidence of profiling both polyadenylated and non-polyadenylated transcripts from single cells and nuclei, with detailed methods and quality control.
Evidence: The paper describes the TotalX protocol and single-nucleus sequencing, and presents data showing detection of both coding and non-coding RNAs.
“By simultaneously profiling both polyadenylated and non-polyadenylated transcripts, the resulting dataset enables joint analysis of the protein-coding and non-coding transcriptomes at single-cell and subcellular resolution.”
supportedAbstractReviewer 2
The work establishes a resource for investigating the landscape of non-coding RNAs across a diverse set of human tissues and cell types.
The paper provides a comprehensive dataset and demonstrates its utility through multiple analyses, though the single-donor nature limits diversity.
Evidence: The paper describes the dataset composition and presents several analyses demonstrating its utility.
“Our work establishes a resource for investigating the landscape of non-coding RNAs across a diverse set of human tissues and cell types.”
supportedAbstractReviewer 2
Nuclear compartmentalization of ncRNAs is cell type-dependent.
The paper provides evidence from comparing single-cell and single-nucleus data, showing cell type-specific patterns of nuclear enrichment for many ncRNAs.
Evidence: Figures 4 and S10 show cell type-specific nuclear enrichment patterns and cosine similarity analysis.
“we compared single-cell and single-nucleus data from the same samples to infer subcellular localization patterns, revealing cell type-dependent nuclear and cytoplasmic enrichment of specific non-coding RNAs.”
supportedAbstractReviewer 2
Non-coding genes with putative roles in cell division and growth arrest are identified.
The paper identifies ncRNAs consistently upregulated in specific cell-cycle phases and in CDKN2A+ MKI67- cells, though functional validation is not provided.
Evidence: Figures 7 and 8 show cell-cycle phase-specific and senescence-associated ncRNAs.
“we characterized dynamic expression patterns of non-coding RNAs across the cell cycle and senescence-associated cell states, identifying non-coding genes with putative roles in cell division and growth arrest.”
supportedAbstract, final sentenceReviewer 3
Non-coding RNAs with putative roles in cell division and growth arrest are identified.
The paper identifies specific lncRNAs consistently upregulated in S phase across cell types and ncRNA genes enriched in senescence-associated cells.
Evidence: Figure 6 and results describing cell-cycle and senescence analysis.
“identified non-coding genes with putative roles in cell division and growth arrest.”