Expression and significance of X-linked inhibitor of apoptosis protein and its antagonized proteins in acute leukemia.
- Author:
Guang-Hua CHEN
1
;
Feng-Ru LIN
;
Jin-Hai REN
;
Jing CHEN
;
Jing-Nan ZHANG
;
Yan WANG
;
Jing WANG
Author Information
1. Department of Hematology, The Second Affiliated Hospital of Hebei Medical University, Shijiazhang 050000, China. cghzs@yahoo.com.cn
- Publication Type:Journal Article
- MeSH:
Acute Disease;
High-Temperature Requirement A Serine Peptidase 2;
Humans;
Inhibitor of Apoptosis Proteins;
biosynthesis;
genetics;
Intracellular Signaling Peptides and Proteins;
genetics;
Leukemia;
metabolism;
Mitochondrial Proteins;
biosynthesis;
genetics;
Neoplasm Proteins;
biosynthesis;
genetics;
Prognosis;
RNA, Messenger;
biosynthesis;
genetics;
Serine Endopeptidases;
biosynthesis;
genetics;
X-Linked Inhibitor of Apoptosis Protein;
biosynthesis;
genetics
- From:
Journal of Experimental Hematology
2006;14(4):639-643
- CountryChina
- Language:Chinese
-
Abstract:
To investigate the expression and significance of X-linked inhibitor of apoptosis protein (XIAP) and XIAP-associated factor 1 (XAF1) in acute leukemia, the expression of XIAP, XAF1, Smac, and HtrA2 mRNA in the bone marrow aspirates from 87 newly diagnosed AL patients, 23 patients in remission, 6 patients in relapse, and 17 normal controls were detected by means of reverse transcriptase polymerase chain reaction (RT-PCR), and their relationship with clinical therapeutic efficiency was analyzed. The results showed that the expression level of XIAP mRNA in newly diagnosed AL patients (0.990 +/- 0.337) was significantly higher than that in normal controls (0.395 +/- 0.148) (P < 0.01); the positive rate and expression level of XAF1 mRNA in newly diagnosed AL patients (56.32%, 0.246 +/- 0.267) were significantly lower than that in normal controls (100%, 0.964 +/- 0.387) (P < 0.01). In 69 out of 87 newly diagnosed AL patients, efficacy remained evaluable. AL patients with high level of XIAP achieved a lower complete remission (CR) rate than patients with low level of XIAP (54.55% and 86.11%, respectively) (P < 0.01). XAF1 positive patients achieved a higher CR rate than XAF1 negative patients (86.84% and 51.61%, respectively) (P < 0.01). It is concluded that the overexpression of XIAP and negativity of XAF1 may be two adverse prognostic factors in AL patients.
