Long Noncoding RNAs Regulate the Radioresistance of Breast Cancer

Table 1

Classification of long non-coding RNAs into classes and sub-classes according to their function, structure and biogenesis.

lncRNAs
Classification standards	Classes	Sub-classes
Function	Cis lncRNA
	CeRNA
	Trans lncRNA
Structure	Circular RNA
	Linear RNA	lincRNA
		eRNA
		TUCRNA
		NAT
Biogenesis	Intronic RNA
	Enhancer RNA
	Promoter RNA
	Antisense RNA
	Sense RNA
	Intergenic RNA
	Bidirectional RNA

Abbreviations: cis-lncRNA: cis-acting long non coding RNA, ceRNA: competing endogenous RNA, trans-lncRNA: trans-acting long non coding RNA, lincRNA: long intergenic noncoding RNA, eRNA: enhancer-derived RNA, TUCRNAs: transcribed ultraconserved RNAs, NAT: natural antisense transcript.