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2018 ; 9
(2
): 85
Nephropedia Template TP
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English Wikipedia
Long non-coding RNA HOTTIP promotes BCL-2 expression and induces chemoresistance
in small cell lung cancer by sponging miR-216a
#MMPMID29367594
Sun Y
; Hu B
; Wang Q
; Ye M
; Qiu Q
; Zhou Y
; Zeng F
; Zhang X
; Guo Y
; Guo L
Cell Death Dis
2018[Jan]; 9
(2
): 85
PMID29367594
show ga
Despite progress in treatment of small cell lung cancer (SCLC), its multidrug
chemoresistance and poor prognosis still remain. Recently, we globally assessed
long non-coding RNAs (lncRNAs) for contributions to SCLC chemoresistance using
microarray data, in vitro and in vivo assays. Here we reported that HOTTIP,
encoding a lncRNA that is frequently amplified in SCLC, was associated with SCLC
cell chemosensitivity, proliferation, and poor prognosis of SCLC patients.
Moreover, mechanistic investigations showed that HOTTIP functioned as an oncogene
in SCLC progression by binding miR-216a and abrogating its tumor-suppressive
function in this setting. On the other hand, HOTTIP increased the expression of
anti-apoptotic factor BCL-2, another important target gene of miR-216a, and
jointly enhanced chemoresistance of SCLC by regulating BCL-2. Taken together, our
study established a role for HOTTIP in SCLC progression and chemoresistance
suggest its candidacy as a new diagnostic and prognostic biomarker for clinical
management of SCLC.