How to Choose Your tRNA Modification Sequencing/Microarray Platform Wisely?
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To investigate tRNA modifications, a variety of platforms have been developed, each designed for different research objectives. However, no single platform is ideal for every study. The optimal choice depends on the biological question, target RNA species, modification type, and resolution requirements. Understanding the capabilities and limitations of each technology is therefore essential for selecting the most appropriate experimental strategy. Here, we compare five complementary platforms to help researchers choose the most suitable solution.
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Small RNA
Modification Array |
tRNA Charging Seq |
tRNA Modification Seq |
m7G TRAC-Seq/m3C HAC-seq |
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Covered modifications
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Choice of m5C, m7G, m1A, Ψ, or o8G one at a time
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Simultaneously for
Human - m1A*, m3C*, m1G*, m2,2G*, m1I*, yW*, ms2i6A, ms2t6A, acp3U,OHyW, o2yW
Mouse – Marked by * above
Other - Inquire |
Simultaneously for m1A, m3C, m1G, m2,2G |
m7G only or m3C only |
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Small RNA classes
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tRNA, tsRNA, miRNAs, pre-miRNAs
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tRNA |
tRNA |
tRNA |
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Modification detection method and resolution
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• Whole RNA
• RIPed by antibody
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• Single base
• Predicted by mutation signature |
• Single base
• Identified by Enzymatic demethylation + RT mutation |
• Single base
• Precisely detected by chemical cleavage at m7G or m3C |
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Validation
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qPCR
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qPCR
(tRNA charging by Northern blot) |
qPCR |
qPCR |
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Advantages & Applications
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• Study one modification of choice on multiple small RNA classes simultaneously
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• Best for tRNA charging profiling
• Screen broad modification types simultaneously |
• Target m1A, m3C, m1G, and m2,2G simultaneously
• Mod site identification and quantification |
• Precisely target m7G or m3C only |
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