RESUMEN
Longstranded noncoding RNAs (lncRNAs) are RNAs that consist of >200 nucleotides. The majority of lncRNAs do not encode proteins but have been revealed to mediate a variety of important physiological functions. AntisenselncRNAs (ASlncRNAs) are transcribed from the opposite strand of a protein or nonprotein coding gene as part of the antisense strand of the coding gene. ASlncRNAs can serve an important role in the tumorigenesis, prognosis, metastasis and drug resistance of a number of malignancies. This has been reported to be exerted through various mechanisms, such as endogenous competition, promoter interactions, direct interactions with mRNAs, acting as 'scaffolds' to regulate mRNA halflife, interactions with 5untranslated regions and regulation of sense mRNAs. ASlncRNAs have been found to either inhibit or promote tumor aggressiveness by regulating cell proliferation, energy metabolism, inflammation, inflammatorycarcinoma transformation, invasion, migration and angiogenesis. In addition, accumulating evidence has documented that ASlncRNAs can regulate tumor therapy resistance. Therefore, targeting aberrantly expressed ASlncRNAs for cancer treatment may prove to be a promising approach to reverse therapy resistance. In the present review, research advances on the role of ASlncRNAs in tumor occurrence and development were summarized, with the aim of providing novel ideas for further research in this field.