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. 2023 Mar 23;14:1617. doi: 10.1038/s41467-023-37427-7

Fig. 5. Paternal MTX injection alters smallRNA modifications in sperm tRNA fraction and the testicular expression of RNA-methyltransferases.

Fig. 5

Histogram comparing sperm RNA methylations on control and MTX analyzed by UHPLC-MS-MS in 50–90 nt (a) and 20–50 nt (b) fractions. Data represent two biologically independent replicates (n = 2) composed by RNA isolated from 9 males’ sperm. Statistical analysis was performed by two-tailed unpaired t-student’ test. Values are mean ± S.D. (c) Schematic representation of modified nucleotides in the tRNA at secondary and tertiary structure. d RT-qPCR for methyltransferases of m1A (TRMT6) and m5C (DNMT2 and NSUM2) on testis from control and MTX treated males, gene expression was normalized using Rpl7 and Ef1 as housekeeping genes. Statistical analysis was performed by using the two-tailed unpaired t-student’ test. Each dot represents a biologically independent sample composed by RNA isolated from individual male testis. Valures are means ± SEM.