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| 1 | Cloned pigs derived from somatic cell nuclear transferembryos cultured in vitro atlow oxygen tension显示文摘Pig cloning has great potential to human xenotransplantation. The present study was designed to establish a more efficient system for producing cloned pigs by somatic cell nuclear transfer (SCNT). Our approach was as follows: SCNT embryos were reconstructed by using fetal fibroblasts of Chinese miniature pig as donors and in vitro matured oocytes of prepubertal gilts as recipients. Reconstructed em- bryos were induced by electrical fusion/activation and cultured in BSA-containing North Carolina State University 23 medium (NCSU-23) or Porcine Zygote Medium (PZM-3) at the gas condition of 5% CO2, 7% O2, 88% N2. A total of 230 cloned embryos were transferred to three surrogate sows, producing three piglets. One of them is apparently healthy. The clonal provenance of the piglet was indicated by its coat color and confirmed by DNA microsatellite analysis. These results indicate that the use of in vitro matured oocytes from prepubertal gilts as recipient, combined with cloned embryos cultured at low oxygen tension is an effective way to produce cloned pigs. | PAN Dengke ZHANG Yunhai SUN Xiuzhu ZHANG Jian LI Xuyang LI Yan GU Zhiliang DA Yunping WU Changxin LI Ning | 2006 | Chinese Science Bulletin2006，51，7： | 8 |
| 2 | Characterization of a novel plant growth-promoting bacteria strain Delftia tsuruhatensis HR4 both as a diazotroph and a potential biocontrol agent against various plant pathogens显示文摘 | Jigang Han Lei Sun Xiuzhu Dong Zhengqiu Cai Xiaolu Sun Hailian Yang Yunshan Wang Wei Song | 2004 | Systematic and Applied Microbiology2004，，1： | 2 |
| 3 | Endophytic Bacterial Diversity in Rice (Oryza sativa L.) Roots Estimated by 16S rDNA Sequence Analysis显示文摘 | Lei Sun Fubin Qiu Xiaoxia Zhang Xin Dai Xiuzhu Dong Wei Song | 2008 | Microbial Ecology2008，，3： | 1 |
| 4 | Characterization of a novel plant growth-promoting bacteria strain Delftia tsunahatensis HR4 both as a diazotroph and a potential biocontrol agent against various plant pathogens显示文摘 | HAN Jigang SUN Lei DONG Xiuzhu | 2005 | Systematic and Applied Microbiology2005，28，1： | 1 |
| 5 | Endophytic Bacterial Diversity in Rice (Oryza sativa L.) Roots Estimated by 16S rDNA Sequence Analysis显示文摘 | Lei Sun Fubin Qiu Xiaoxia Zhang Xin Dai Xiuzhu Dong Wei Song | 2008 | Microbial Ecology2008，，3： | 1 |
| 6 | Mettl13 protects against cardiac contractile dysfunction by negatively regulating C-Cbl-mediated ubiquitination of SERCA2a in ischemic heart failure显示文摘Ischemic heart failure(HF)remains a leading cause of morbidity and mortality.Maintaining homeostasis of cardiac function and preventing cardiac remodeling deterioration are critical to halting HF progression.Methyltransferase-like protein 13(Mettl13)has been shown to regulate protein translation efficiency by acting as a protein lysine methyltransferase,but its role in cardiac pathology remains unexplored.This study aims to characterize the roles and mechanisms of Mettl13 in cardiac contractile function and HF.We found that Mettl13 was downregulated in the failing hearts of mice post-myocardial infarction(MI)and in a cellular model of oxidative stress.Cardiomyocyte-specific overexpression of Mettl13 mediated by AAV9-Mettl13 attenuated cardiac contractile dysfunction and fibrosis in response to MI,while silencing of Mettl13 impaired cardiac function in normal mice.Moreover,Mettl13 overexpression abrogated the reduction in cell shortening,Ca^(2+)transient amplitude and SERCA2a protein levels in the cardiomyocytes of adult mice with MI.Conversely,knockdown of Mettl13 impaired the contractility of cardiomyocytes,and decreased Ca^(2+)transient amplitude and SERCA2a protein expression in vivo and in vitro.Mechanistically,Mettl13 impaired the stability of c-Cbl by inducing lysine methylation of c-Cbl,which in turn inhibited ubiquitination-dependent degradation of SERCA2a.Furthermore,the inhibitory effects of knocking down Mettl13 on SERCA2a protein expression and Ca^(2+)transients were partially rescued by silencing c-Cbl in H_(2)O_(2)-treated cardiomyocytes.In conclusion,our study uncovers a novel mechanism that involves the Mettl13/c-Cbl/SERCA2a axis in regulating cardiac contractile function and remodeling,and identifies Mettl13 as a novel therapeutic target for ischemic HF. | Shuting Yu ZhiYong Sun Xiuzhu Wang Tiantian Ju Changhao Wang Yingqi Liu Zhezhe Qu KuiWu Liu Zhongting Mei Na Li Meixi Lu Fan Wu Min Huang Xiaochen Pang Yingqiong Jia Ying Li Yaozhi Zhang Shunkang Dou Jianhao Jiang Xin Li Baofeng Yang Weijie Du | 2023 | Science China(Life Sciences)2023，66，12： | 0 |
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