Page 20 - 《南京医科大学学报(自然科学版)》2025年第9期
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A HCC827 HCC827/OR B C 40
(μmol/L) 8 7 6 30 ***
×100 5 4 3 Relative expression of cirrc⁃3633 20
IC50 of osimertinib 0.09 10 **
0.06
H1975 H1975/OR 0.03 0 0
HCC827 H1975 H1975 HCC827
H1975/OR
HCC827/OR
H1975/OR
HCC827/OR
×100
A:Morphology of drug⁃resistant cells and sensitive cells. B:IC50 of drug⁃resistant cells was elevated compared with that of sensitive cells. C:qRT⁃
**
PCR verification that circ_0003633 was significantly highly expressed in drug⁃resistant cell lines. P < 0.01 and *** P < 0.001(n=3).
图1 circ_0003633在耐药细胞中高表达
Figure 1 circ_0003633 is highly expressed in drug⁃resistant cells
证 circ_0003633 环形结构的发散和收敛引物,仅在 证实了circ_0003633含有circRNA结构,比线性亲本
cDNA中成功扩增,而发散引物在gDNA无法检测到 基因 RYK 具有更强的抵抗 RNase R 外切酶的作用
相应的条带,证实了 circ_0003633 的环状结构(图 (图2C)。此外,通过核质分离实验(图2D)和FISH实
2B)。同时,使用RNase R外切酶消化细胞的RNA也 验(图2E)检测了circ_0003633的亚细胞定位。结果
A
Species Gene Isoform Location Strand FPM Exon Start⁃ExonEnd Seq Type Cell Line Conservation
_
Human RYK ENST00000460933 Chr3:133894452- - 0.095 7-13 Ribo Liver_N22 N.A.
(hg19) 133914026
position
organism (genome strand circRNA ID genomic spliced samples scores repeats annotation best gene circRNA
transcript
length
length
symbol
study
browser link)
hsa chr3:133894452⁃ - hsa_circ_0003633 19 574 796 Hs68_control,Hs68_RNase,WAS2, 11,164,3,0, None ANNOTATED, NM_001005861 RYK Jeck2013,
133914026 cerebellum,diencephalon, 38,65,74,25, CDS,coding, Maass2017,
frontal_cortex,occipital_lobe, 25,5,11,7,15, INTERNAL, Rybak2015,
parietal_lobe,temporal_lobe,549, 23,14,26,NA, OVCODE, Salzman2013
Ag04450,Bj,Gm12878,H1hesc,Helas3, 3,5,4,8 OVEXON
Hepg2,Huvec,K562,Nhek,Nhlf,Sknshra
B Marker cDNA cDNAgDNA D HCC827/OR H1975/OR
200 bp 1.5 Nucleus 1.5 Nucleus
Relative RNA level 0.9 Relative RNA level 0.9
100 bp 1.2 Cytoplasm 1.2 Cytoplasm
C Mock 0.6 0.6
1.5 RNase R+ HCC827/OR 0.3 0.3
H1975/OR
Relative RNA level 1.0 ** ** E GAPDH circ_0003633 circ_0003633 circ_0003633
0.0
0.0
GAPDH
U6
U6
liner⁃RYK
liner⁃RYK
0.5
Merge
DAPI
0
circ_0003633
circ_0003633 liner⁃RYK liner⁃RYK H1975/OR
A:Basic information of circ_0003633. B,C:Gel electrophoresis and RNase R verification of the circular structure of circ_000363. D,E:Nuclear⁃
**
cytoplasmic separation experiment and FISH detection of circ_0003633 cell localization. P < 0.01(n=3).
图2 验证circ_0003633的环状结构及亚细胞定位
Figure 2 Verify the ring structure and subcellular localization of circ_0003633

