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Publikováno v:
Cancer metastasis reviews. 20(1-2)
The common clinical problem in the successful treatment of cancer is the resistance of cancer cells to chemotherapeutic drugs. Chemotherapy kills drug-sensitive cells, but leaves behind a higher proportion of drug-resistant cells. The resistance can
Publikováno v:
International journal of cancer. 83(3)
Time-dependent ladder-type DNA fragmentation and morphological alterations consistent with apoptosis were observed among A253 human head and neck squamous cell carcinoma (HNSCC) cells in nude mice from 15 to 18 days after transplantation, without any
Publikováno v:
Oncology research. 11(2)
Human head and neck squamous cell carcinoma A253 cells, which do not express p53 and p21 proteins, were engineered to stably express about 50-fold higher level of Bax protein (A253/Bax) than the mock-transfected (A253/vec) or parental cells. Using th
Publikováno v:
Anticancer research. 18(5A)
SN-38 is the active metabolite of the topoisomerase-I (topo-I) inhibitor Irinotecan (CPT-11). Generally, topo-I inhibitors stabilize the complex between topo-I and DNA which collide with moving DNA replication forks, eventually leading to double stra
Publikováno v:
Anticancer research. 17(5A)
The prognostic value of topoisomerase I (Topo I) catalytic activity and expression of the multidrug resistance (MDR) marker P-glycoprotein (Pgp) and multidrug resistance protein (MRP) for in vitro sensitivity to Topo I interactive agents were evaluat
Publikováno v:
Oncology research. 9(9)
Membrane protein-associated alterations in cellular drug accumulation have been recently implicated in resistance to topoisomerase I (TOP-I)-interactive drugs. The present study investigated the cellular determinants of resistance to the indolocarbaz
Autor:
H, Minderman, U, Vanhoefer, K, Toth, M B, Yin, M D, Minderman, C, Wrzosek, M L, Slovak, Y M, Rustum
Publikováno v:
Cytometry. 25(1)
Multidrug resistance (MDR) is often related to expression of P-glycoprotein (Pgp) or Multidrug Resistance Protein (MRP). Pgp-mediated MDR can be evaluated by determining cellular retention of fluorescent substrates by flow cytometry. This study deter
Publikováno v:
Oncology research. 7(2)
The patterns of DNA fragmentation were evaluated following a brief exposure (2 h) of the human ileocecal adenocarcinoma cell line, HCT-8, to several specific thymidylate synthase inhibitors, a quinazoline (ZD1694) and benz[cd]indole-containing molecu
Publikováno v:
Cancer research. 52(21)
DNA single-strand breaks and associated growth inhibition induced by the thymidylate synthase inhibitor N-(5-[N-(3,4-dihydro-2-methyl-4-oxoquinazoline-6-ylmethyl)-N -methylamino]-2 - thenoyl)-L-glutamic acid (ICI D1694) were quantitated using the hum