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2017 ; 14
(4
): 4237-4242
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Zoledronic acid augments the radiosensitivity of cancer cells through perturbing
S- and M-phase cyclins and p21(CIP1) expression
#MMPMID28943933
Du C
; Wang Y
; Li H
; Huang Y
; Jiang O
; You Y
; Luo F
Oncol Lett
2017[Oct]; 14
(4
): 4237-4242
PMID28943933
show ga
Radiotherapy and adjuvant chemotherapy have become the standard treatments for
multiple types of cancer. Although cancer cells are usually sensitive to
radiotherapy, metastasis and local failure still occur mainly due to developed
resistance to radiotherapy. Thus, it is critical to improve therapeutics for
cancer treatment. The present study demonstrated that third-generation
bisphosphonate zoledronic acid (ZOL), even at a low concentration, augments the
radiosensitivity of cancer cells exposed to ionizing radiation (IR) by inducing
S-phase arrest and subsequently promoting apoptosis. This function of ZOL was
associated with elevated levels of cyclin A and cyclin B in the S and M phases,
as well as decreased p21(CIP1) expression. In addition, ZOL also inhibited
malignant the invasiveness of cancer cells. Notably, these effects could be
enhanced concurrently with IR. The present data indicated that combined treatment
with ZOL plus IR may be a novel technique to augment the radiosensitivity of
cancer cells.