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2017 ; 8
(16
): 25942-25954
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
The long noncoding RNA, treRNA, decreases DNA damage and is associated with poor
response to chemotherapy in chronic lymphocytic leukemia
#MMPMID28412730
Miller CR
; Ruppert AS
; Fobare S
; Chen TL
; Liu C
; Lehman A
; Blachly JS
; Zhang X
; Lucas DM
; Grever MR
; Tallman MS
; Flinn IW
; Rassenti LZ
; Kipps TJ
; Sampath D
; Coombes KR
; Hertlein EK
Oncotarget
2017[Apr]; 8
(16
): 25942-25954
PMID28412730
show ga
The study of long noncoding RNAs (lncRNAs) is an emerging area of cancer
research, in part due to their ability to serve as disease biomarkers. However,
few studies have investigated lncRNAs in chronic lymphocytic leukemia (CLL). We
have identified one particular lncRNA, treRNA, which is overexpressed in CLL
B-cells. We measured transcript expression in 144 CLL patient samples and
separated samples into high or low expression of treRNA relative to the overall
median. We found that high expression of treRNA is significantly associated with
shorter time to treatment. High treRNA also correlates with poor prognostic
indicators such as unmutated IGHV and high ZAP70 protein expression. We validated
these initial findings in samples collected in a clinical trial comparing the
nucleoside analog fludarabine alone or in combination with the alkylating agent
cyclophosphamide in untreated CLL samples collected prior to starting therapy
(E2997). High expression of treRNA was independently prognostic for shorter
progression free survival in patients receiving fludarabine plus
cyclophosphamide. Given these results, in order to study the role of treRNA in
DNA damage response we generated a model cell line system where treRNA was
over-expressed in the human B-CLL cell line OSU-CLL. Relative to the vector
control line, there was less cell death in OSU-CLL over-expressing treRNA after
exposure to fludarabine and mafosfamide, due in part to a reduction in DNA
damage. Therefore, we suggest that treRNA is a novel biomarker in CLL associated
with aggressive disease and poor response to chemotherapy through enhanced
protection against cytotoxic mediated DNA damage.
|*DNA Damage
[MESH]
|*RNA, Long Noncoding
[MESH]
|Adult
[MESH]
|Aged
[MESH]
|Aged, 80 and over
[MESH]
|Antineoplastic Combined Chemotherapy Protocols/adverse effects/therapeutic use
[MESH]