October 28: Shanghai RNA Club and Singapore NUS RNA Supergroup

Item: October 28: Shanghai RNA Club and Singapore NUS RNA Supergroup
Rating: 4
Author: PostSingularity Institute

Title history

October 28: Shanghai RNA Club and Singapore NUS RNA Supergroup — observed on 20261030-1054 UTC (YouTube)

by RNA Collaborative Seminar Series · View the channel on PSI

Life & Natural Systems Biology PSBiology, life sciences PSDMolecular biology

🎙 RNA Collaborative Seminar Series 👥 2K 📅 October 29, 2026 ⏱ 65 min 👁 65 📄 original study 🧭 2026-10-30

Available in: English (current) Français

Keywords

Ribo-seqnon-canonical ORFsPEP scoreselective ribosome profilingISSAC

Summary

This seminar features two research presentations. The first, by Zhe Ji, focuses on computational and experimental approaches to study RNA translation using ribosome profiling. Ji describes methods to identify translated open reading frames (ORFs) genome-wide, leading to the discovery of non-canonical microproteins. He introduces a PEP score that distinguishes stable microproteins from rapidly degraded ones based on features like length and conservation. Validation experiments using short tags confirm that stable microproteins often exceed 60 amino acids and can have functional roles, such as interacting with mitochondrial processing peptidase. The second part of his talk covers selective ribosome profiling to map translocon recruitment during protein synthesis, revealing that OST and MPT translocons are dynamically recruited depending on substrate topology and loop lengths. The second talk by Yuntian Zhang, as described, presents ISSAC, a method for single-cell splicing analysis linking cell type-specific and cell state-dependent sQTLs to neurological disorders. The seminar provides detailed insights into molecular mechanisms of translation and splicing, with implications for disease.

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Critical Evaluation

Value of the Information & Strength of the Argument

The value of the information is high, as it presents novel methods and findings in molecular biology: the development of Ribo-seq analysis tools (RiboViz, R4C) and the PEP score for microprotein stability prediction, along with direct experimental validation. The argumentation is solid, grounded in published research and multiple lines of evidence, including CRISPR screens, stability assays, and cryo-EM data. The speaker carefully explains the reasoning behind each conclusion, addressing potential confounding factors such as mRNA decay versus protein stability. The second talk, though not detailed in the transcript, implies a novel computational tool for single-cell splicing, which could be valuable for understanding disease associations. Overall, the presentations are well-argued and data-driven.

Scientific Rigor, Source Quality, Title Accuracy

Scientific rigor is evident: the speaker references his own published works and collaborations with well-known labs (e.g., Weissman, Kinnan). The methods are described in sufficient detail to be reproducible, and the conclusions are supported by experimental validations. The title of the video is merely a logistical label and does not indicate the scientific depth; it is not misleading but rather uninformed. The description provides talk titles and speaker affiliations, but no external links. No comments were available for analysis, so public reception cannot be assessed.

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Title / Content Match

The title is a date and seminar series name, not descriptive of the scientific content. It is functional but lacks specificity about the topics presented.

Quality & Reliability

8/10

The seminar presents established research from peer-reviewed work, with methodological details and validations. The speaker is a recognized researcher, and the content aligns with current scientific understanding. Minor transcript intelligibility issues do not affect core reliability.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

Unraveling the Genomic Complexity of Translation through Ribosome Profiling (talk by Zhe Ji) — First talk in the seminar, describes methods and findings on ribosome profiling and microproteins.
Single-cell splicing analysis with ISSAC links cell type-specific and cell state-dependent sQTLs to neurological disorders (talk by Yuntian Zhang) — Second talk in the seminar, presents a single-cell splicing analysis tool.

Contribution & Novelties

The seminar presents original contributions: the development of computational tools (RiboViz, PEP score) and experimental methods (R4C low-input ribosome profiling) that advance the study of non-canonical translation and translocon dynamics. The findings that microprotein stability is largely length-dependent and that translocon recruitment is dynamically regulated during mRNA translation are novel insights.

Pour aller plus loin :

Ribosome profiling — Overview of the core technique used throughout the talk.
Translocon — Key concept for the second part of the first talk.
Single-cell sequencing — Context for the second talk’s method.

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Radar Profile

The profile shows very high technical level and high information quality, with slightly lower quantity and reliability due to the limited transcript detail and lack of external source verification. The video is clearly aimed at a specialized scientific audience.

Reliability 8/10