The Photothermal Biology Database (https://grswsci.top) is a comprehensive, user-friendly, one-click interactive web resource, initiated in 2023, officially launched on April 1, 2024, with cumulative visits exceeding 110,000. It is used to analyze various cancer omics data, including genomics, transcriptomics, proteomics, epigenetics, single-cell sequencing, spatial transcriptomics, etc., providing easily accessible publicly available cancer omics data, allowing users to identify biomarkers or perform computational validation of potential target genes. These resources enable researchers to gather valuable information and data about genes/targets of interest. For zero-code publishable bioinformatics analysis, journal submissions, or joining high-end research communities, please choose the Photothermal Biology Database!
Research Background and Findings
A collaborative team from Sun Yat-sen University and Central South University published a study in the Journal of Experimental & Clinical Cancer Research (IF=11.4) revealing the critical role of tsRNA-GlyGCC in chemoresistance to 5-fluorouracil (5FU) in colorectal cancer (CRC). Through next-generation sequencing analysis of CRC and adjacent tissues, it was found that tsRNA-GlyGCC was significantly upregulated in chemoresistant samples and positively correlated with tumor metastasis.
Functional Validation and Mechanistic Study
Functional Validation of tsRNA-GlyGCC
The research team confirmed through gain-of-function and loss-of-function experiments:– Overexpression of tsRNA-GlyGCC promotes tumor cell proliferation– Inhibition of tsRNA-GlyGCC significantly suppresses tumor proliferation and tumorigenic ability– tsRNA inhibition leads to increased expression of BAX, decreased expression of BCL2, promoting cell apoptosis– Combined treatment with 5FU significantly enhances chemosensitivity
Molecular Mechanism Analysis
The study elucidated the mechanism of action of tsRNA-GlyGCC:1. Targeting and binding to the 3′ UTR of SPIB mRNA, inhibiting its translation2. SPIB acts as a transcription factor negatively regulating the expression of JAK1/STAT63. METTL1-mediated m7G modification regulates the expression of tsRNA-GlyGCC
Clinical Applications and Treatment Strategies
The research team developed a combined treatment plan using PAE nanomaterials to encapsulate 5FU and tsRNA inhibitors. Animal experiments confirmed that this strategy significantly enhances the therapeutic effect against CRC, providing a potential new therapeutic approach for clinical translation.
Research Evaluation and Outlook
This study innovatively reveals the role of tsRNA in chemoresistance and successfully achieves preclinical translation. However, there are certain limitations in mechanism validation, such as the METTL1 knockdown experiment not fully confirming the specific role of m7G modification. Future research could further explore the translational regulatory functions of tsRNA and its epigenetic mechanisms.