Review reveals the regulatory mechanisms of small RNAs in male germ cells, suggesting novel strategies for male contraception and infertility therapy.
Key Points
Summarize the synthesis pathways, molecular modes of action, and physiological functions of small non-coding RNAs across each phase of spermatogenesis, while evaluating their therapeutic relevance.
Reviewed published literature on the biogenesis and post-transcriptional regulatory mechanisms of siRNAs, miRNAs, and piRNAs in male germ cell biology.
Characterized stage-specific expression profiles across mitotic spermatogonia, meiotic spermatocytes, and post-meiotic round and elongated spermatids.
MiRNAs exhibit widespread and abundant expression throughout male germ cell lineages, whereas piRNAs show phase-restricted expression limited to pachytene spermatocytes and round spermatids.
Small RNAs orchestrate essential developmental milestones, including spermatogonial stem cell proliferation, meiotic chromosome regulation, and structural remodeling during spermiogenesis.
Targeted modulation of small RNA pathways provides potential translational avenues for reversible male contraception and the clinical management of male infertility and testicular cancer.