scholarly journals Expression of a murine homologue of the inhibitor of apoptosis protein is related to cell proliferation

1999 ◽  
Vol 96 (4) ◽  
pp. 1457-1462 ◽  
Author(s):  
K. Kobayashi ◽  
M. Hatano ◽  
M. Otaki ◽  
T. Ogasawara ◽  
T. Tokuhisa
Keyword(s):  
Cell Proliferation ◽  
Inhibitor Of Apoptosis ◽  
Inhibitor Of Apoptosis Protein ◽  
Apoptosis Protein ◽  
Murine Homologue

scholarly journals MiR-489-3p modulates cell proliferation and apoptosis in cerulein-induced acute pancreatitis by targeting X-linked inhibitor of apoptosis protein

2021 ◽  
Author(s):  
Xiang Li ◽  
Hong Qin ◽  
Xiaotong Han ◽  
Xingwen Zhang ◽  
Luping Wang ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Acute Pancreatitis ◽  
Poor Prognosis ◽  
Luciferase Assay ◽  
Inhibitor Of Apoptosis ◽  
Inhibitor Of Apoptosis Protein ◽  
Immunoprecipitation Assay ◽  
Apoptosis Protein ◽  
Proliferation And Apoptosis ◽  
Rna Immunoprecipitation

IntroductionThis study aims to explore the effect and mechanism of miR�489-3p on the proliferation and apoptosis of pancreatic acinar cells in acute pancreatitis (AP).Material and methodsX-linked inhibitor of apoptosis protein (XIAP) and miR-489-3p expression in serum of AP patients, pancreatic AR42J cells, and rat AP tissues were measured using quantitative reverse transcription poly�merase chain reaction and western blot. The effect of miR-489-3p on pro�liferation and apoptosis was determined by MTT assay and flow cytometry. The relationship between XIAP and miR-489-3p was verified using luciferase assay RNA immunoprecipitation assay. Histological changes in rat pancreatic tissues were observed via haematoxylin and eosin staining.ResultsMeasurement of miR-489-3p and XIAP expressions in AP patients revealed a negative correlation between miR-489-3p and XIAP. Increased miR-489-3p expression in AP patients indicated a poor prognosis. Cerulein was used to induce AP in AR42J cells and standard deviation rats. Exper�iments in cells and AP rat models showed that miR-489-3p can increase cell apoptosis and inhibit cell proliferation by regulating XIAP, as shown by elevated expressions of pro-apoptotic proteins (p53 and Bax) and decreased expression of proliferation indicator (Ki-67) after transfection of miR-489- 3p mimics. Meanwhile, knockdown of miR-489-3p abrogated the inhibitory effects of miR-489-3p on cell proliferation and the promotion on cell apop�tosis. Luciferase assay and RNA immunoprecipitation assay confirmed that XIAP can directly bind miR-489-3p.ConclusionsWe concluded that miR-489-3p modulates cell proliferation and apoptosis in AP by targeting XIAP. Given that high expression of miR�489-3p in AP indicated poor prognosis, it raises the possibility that miR�489-3p might be a novel and valuable therapeutic target and a prognosis indicator for AP.

Turner syndrome patients with bicuspid aortic valves and renal malformations exhibit abnormal expression of X-linked inhibitor of apoptosis protein (XIAP)

2015 ◽  
Vol 28 (11-12) ◽  
Author(s):  
Ganesh S. Jevalikar ◽  
Margaret Zacharin ◽  
Mary White ◽  
Steven W. Yau ◽  
Winnie Li ◽  
...  
Keyword(s):  
Mrna Expression ◽  
Turner Syndrome ◽  
Quantitative Polymerase Chain Reaction ◽  
Inhibitor Of Apoptosis ◽  
Aortic Valves ◽  
Inhibitor Of Apoptosis Protein ◽  
Abnormal Expression ◽  
Apoptosis Protein ◽  
Renal Malformations ◽  
Bicuspid Aortic Valves

AbstractWe analyzed mRNA expression of X-linked inhibitor of apoptosis protein (XIAP) in patients with Turner syndrome (TS) and examined its association with phenotypic features.XIAP mRNA expression levels were investigated in 98 patients with TS in total RNA extracted from blood leucocytes by real time quantitative polymerase chain reaction.Levels of XIAP mRNA were significantly lower in patients with bicuspid aortic valves (BAV; n=13) than those without (log XIAP –1.17±0.3 vs. –0.94±0.2, p=0.002). Significantly higher expression of XIAP mRNA was seen in patients with a mosaic karyotype and renal malformations (log XIAP –0.79±0.3 vs. –1.0±0.3, p=0.03). No correlations were seen between XIAP and other manifestations.Abnormal expression of XIAP may be an important underlying mechanism in the development of BAV and renal malformations in TS. However, abnormal XIAP mRNA expression, as determined from peripheral mononuclear cells, does not appear to explain all the somatic and visceral stigmata of TS.

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