scholarly journals A novel oral inhibitor for one-carbon metabolism and checkpoint kinase 1 inhibitor as a rational combination treatment for breast cancer

Author(s):  
Jin Lee ◽  
Xiaoxi Chen ◽  
Yuming Wang ◽  
Tatsunori Nishimura ◽  
Mengjiao Li ◽  
...  
2010 ◽  
Vol 38 (8) ◽  
pp. 4893-4901 ◽  
Author(s):  
Shaik Mohammad Naushad ◽  
Addepalli Pavani ◽  
Raghunadha Rao Digumarti ◽  
Suryanarayana Raju Gottumukkala ◽  
Vijay Kumar Kutala

2008 ◽  
Vol 17 (8) ◽  
pp. 2109-2116 ◽  
Author(s):  
Xinran Xu ◽  
Marilie D. Gammon ◽  
James G. Wetmur ◽  
Patrick T. Bradshaw ◽  
Susan L. Teitelbaum ◽  
...  

2017 ◽  
Vol 22 (1) ◽  
pp. 79-90 ◽  
Author(s):  
Henry Okuchukwu Ebili ◽  
Victoria O. Iyawe ◽  
Kikelomo Rachel Adeleke ◽  
Babatunde Abayomi Salami ◽  
Adekunbiola Aina Banjo ◽  
...  

2020 ◽  
Vol 21 (8) ◽  
pp. 2691 ◽  
Author(s):  
Changhoon Choi ◽  
Won Kyung Cho ◽  
Sohee Park ◽  
Sung-Won Shin ◽  
Won Park ◽  
...  

Due to a superior dose conformity to the target, proton beam therapy (PBT) continues to rise in popularity. Recently, considerable efforts have been directed toward discovering treatment options for use in combination with PBT. This study aimed to investigate the targeting of checkpoint kinase 1 (CHK1), a critical player regulating the G2/M checkpoint, as a promising strategy to potentiate PBT in human triple-negative breast cancer (TNBC) cells. Protons induced cell-cycle arrest at the G2/M checkpoint more readily in response to increased CHK1 activation than X-rays. A clonogenic survival assay revealed that CHK1 inhibition using PF-477736 or small interfering RNA (siRNA) enhanced the sensitivity toward protons to a greater extent than toward X-rays. Western blotting demonstrated that PF-477736 treatment in the background of proton irradiation increased the pro-apoptotic signaling, which was further supported by flow cytometry using annexin V. Immunofluorescence revealed that proton-induced DNA double-strand breaks (DSBs) were further enhanced by PF-477736, which was linked to the downregulation of Rad51, essential for the homologous recombination repair of DSBs. Direct inactivation of Rad51 resulted in enhanced proton sensitization. Collectively, these data suggest that targeting CHK1 may be a promising approach for improving PBT efficacy in the treatment of TNBC.


2007 ◽  
Vol 16 (6) ◽  
pp. 1140-1147 ◽  
Author(s):  
Victoria L. Stevens ◽  
Marjorie L. McCullough ◽  
Alexandre L. Pavluck ◽  
Jeffrey T. Talbot ◽  
Heather S. Feigelson ◽  
...  

2016 ◽  
Vol 7 (4) ◽  
pp. 279-290 ◽  
Author(s):  
Shaik Mohammad Naushad ◽  
Chandrasekhar Divya ◽  
M. Janaki Ramaiah ◽  
Tajamul Hussain ◽  
Salman A. Alrokayan ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document