Table 2.

Aberrantly expressed miRNAs in breast cancer and their suggestive roles.

miRNA	Suggestive role	Biological function	References
miR-21	ON	Invasion and metastasis	56
miR-10b	ON	Invasion and metastasis	48,56,57
miR-155	ON	Cell invasion and metastasis	56
miR-27a	ON	Cell cycle progression	48
miR-206	TS	ER signaling	48,56
miR-125a/b	TS	Migration and invasion	48,56
Let-7 family	TS	Proliferation and metastasis	56,57

ON, oncogene; TS, tumor suppressor; ER, estrogen receptor.