8-Nitroguanine is a nitrative guanine derivative formed by oxidative damage to the guanine base in DNA by reactive nitrogen species (RNS) during inflammation and in vitro by reaction of DNA with peroxynitrite and other RNS reagents. It is mutagenic and induces G:C to T:A transversion in DNA. Incorporation of 8-nitroguanine as an 8-nitroG:anti-G base pair into a primer template stalls human DNA polymerase β and induces a 2:1 preference for deoxyadenosine (dA) insertion over deoxycytosine (dC). 8-Nitroguanine levels are increased in the lung tissue of mice with conditional expression of mutant K-Ras(G12V) that developed lung adenocarcinoma and in the lung tissue and peripheral lymphocyte DNA of cigarette smoke-exposed rats. It is also increased in the lung tissue of influenza- or Sendai virus-infected mice and the colon epithelial cells of mice in an inflammatory bowel disease (IBD) model.
8-Nitroguanine , a product of nitrative DNA damage caused by reactive nitrogen species, is a potential biomarker for progression of malignant fibrous histiocytoma.
体外研究
Compared with a single infection, repeated Opisthorchis viverrini (OV) infection increased the formation of 8-nitroguanine and the expression of iNOS in the bile duct epithelium.
分子式
C5H4N6O3
分子量
196.12
CAS号
168701-80-2
中文名称
3-(4-硝基苯基)丙酸
运输条件
Room temperature in continental US; may vary elsewhere.