PMID- 33374478 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240330 IS - 2409-9279 (Electronic) IS - 2409-9279 (Linking) VI - 4 IP - 1 DP - 2020 Dec 24 TI - miRNA Targets: From Prediction Tools to Experimental Validation. LID - 10.3390/mps4010001 [doi] LID - 1 AB - MicroRNAs (miRNAs) are post-transcriptional regulators of gene expression in both animals and plants. By pairing to microRNA responsive elements (mREs) on target mRNAs, miRNAs play gene-regulatory roles, producing remarkable changes in several physiological and pathological processes. Thus, the identification of miRNA-mRNA target interactions is fundamental for discovering the regulatory network governed by miRNAs. The best way to achieve this goal is usually by computational prediction followed by experimental validation of these miRNA-mRNA interactions. This review summarizes the key strategies for miRNA target identification. Several tools for computational analysis exist, each with different approaches to predict miRNA targets, and their number is constantly increasing. The major algorithms available for this aim, including Machine Learning methods, are discussed, to provide practical tips for familiarizing with their assumptions and understanding how to interpret the results. Then, all the experimental procedures for verifying the authenticity of the identified miRNA-mRNA target pairs are described, including High-Throughput technologies, in order to find the best approach for miRNA validation. For each strategy, strengths and weaknesses are discussed, to enable users to evaluate and select the right approach for their interests. FAU - Riolo, Giulia AU - Riolo G AUID- ORCID: 0000-0003-2888-5755 AD - Department of Medical, Surgical and Neurological Sciences, University of Siena, 53100 Siena, Italy. FAU - Cantara, Silvia AU - Cantara S AUID- ORCID: 0000-0002-5741-295X AD - Department of Medical, Surgical and Neurological Sciences, University of Siena, 53100 Siena, Italy. FAU - Marzocchi, Carlotta AU - Marzocchi C AUID- ORCID: 0000-0002-8573-4913 AD - Department of Medical, Surgical and Neurological Sciences, University of Siena, 53100 Siena, Italy. FAU - Ricci, Claudia AU - Ricci C AUID- ORCID: 0000-0002-2431-0308 AD - Department of Medical, Surgical and Neurological Sciences, University of Siena, 53100 Siena, Italy. LA - eng PT - Journal Article PT - Review DEP - 20201224 PL - Switzerland TA - Methods Protoc JT - Methods and protocols JID - 101720073 PMC - PMC7839038 OTO - NOTNLM OT - experimental validation OT - high-throughput technologies OT - machine learning OT - miRNA target OT - prediction tools OT - predictive strategies OT - validation criteria COIS- The authors declare no conflict of interest. EDAT- 2020/12/31 06:00 MHDA- 2020/12/31 06:01 PMCR- 2020/12/24 CRDT- 2020/12/30 01:01 PHST- 2020/11/19 00:00 [received] PHST- 2020/12/17 00:00 [revised] PHST- 2020/12/22 00:00 [accepted] PHST- 2020/12/30 01:01 [entrez] PHST- 2020/12/31 06:00 [pubmed] PHST- 2020/12/31 06:01 [medline] PHST- 2020/12/24 00:00 [pmc-release] AID - mps4010001 [pii] AID - mps-04-00001 [pii] AID - 10.3390/mps4010001 [doi] PST - epublish SO - Methods Protoc. 2020 Dec 24;4(1):1. doi: 10.3390/mps4010001.