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Fig. 5 | Molecular Cancer

Fig. 5

From: LncRNA DLEU1 contributes to colorectal cancer progression via activation of KPNA3

Fig. 5

DLEU1 interacts with SMARCA1 in CRC cells. a The expression of DLEU1 in cytoplasm and nucleus of HCT8 cells was measured by qRT-PCR. U6 serves as a nuclear control. GAPDH serves as a cytoplasmic control. b SMARCA1 was a potential interactive candidate of DLEU1. Biotin-labeled DLEU1 and intron control were incubated with HCT8 cell lysates, and the enriched products were eluted and separated by SDS-PAGE electrophoresis and silver staining. The differential band appearing in DLEU1 lane was analyzed by mass spectrum. c DLEU1 associated with SMARCA1 as shown by RNA pulldown and Western blot. Biotin-labeled DLEU1 and intron control were added into HCT8 cell lysates, and pulldown assays were performed. d DLEU1 was enriched by SMARCA1 in HCT8 and SW480 cell lysates. e SMARCA1 enriched DLEU1 in HCT8 cell lysates. SMARCA1 antibody was added into cell lysates and enriched RNAs were isolated. Then enriched DLEU1 was analyzed by PCR. f DLEU1 co-localized with SMARCA1 in HCT8 cells as shown by RNA FISH. Green, DLEU1; Red, SMARCA1; Blue, DAPI. Scale bar, 10 μm. g the region of nt 1~ 400 in DLEU1 was important for the interaction with SMARCA1. h DLEU1 (nt 1~ 400) associated with SMARCA1 directly as shown by RNA EMSA assays. i The region of nt 700~ 1050 is indispensable for the function of DLEU1 in colorectal cancer. Overexpression of DLEU1 with deletion of nt 1~ 400 cannot promoted proliferation and metastasis in CC. ***P<0.001. All data presented are shown as means ± SD collected from three independent experiments

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