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Ying Peng,Yong Wang,Xia-Fang Tao,Zhen Zeng,Nana Adwoa Nkuma Johnson,Qin Yao,Ke Ping Chen 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.3
The basic helix-loop-helix (bHLH) proteins are important player in regulation of various eukaryotic developmental processes such as neurogenesis, myogenesis and heart morphogenesis. The Asian citrus psyllid (Diaphorina citri) is a sap-sucking pest which is widely distributed in southern Asia and causes greening disease in citrus orchard. In this study, Diaphorina citri genome is found to encode 52 bHLH genes. Through in-depth phylogenetic analyses, all 52 Diaphorina citri bHLH (DcbHLH) genes are classified into correspondent bHLH families according to their orthology with bHLHs from fruit fly and other insect species. Examination of GenBank annotations of these 52 DcbHLH members indicated that annotations of only 21 DcbHLH proteins are consistent with our analysis. Therefore, our data provide useful information for updating annotations to other 31 DcbHLH proteins. Among the 52 DcbHLH proteins, DcClk, DcSima, DcCyc and DcCwo have dual HLH motifs, which have not been found in any other bHLH proteins. Diaphorina citri has 2, 3 and 2 bHLH members respectively in Net, Hand and SRC families while other insect species have only one member in these families. The existence of more Net, Hand and SRC family members probably means that Asian citrus psyllid possesses more complex regulatory network in controlling intervein emergence, heart morphogenesis and larval metamorphosis than other insects. These results provide a solid basis and interesting aspects for further investigations into the evolution and functions of bHLH genes in Diaphorina citri.
( Xin Li Shi ),( Jing Li Liu ),( Lai Feng Ren ),( Nan Mao ),( Fang Tan ),( Nana Ding ),( Jing Yang ),( Ming Yuan Li ) 생화학분자생물학회(구 한국생화학분자생물학회) 2014 BMB Reports Vol.47 No.4
Drug-resistance and imbalance of apoptotic regulation limit chemotherapy clinical application for the human hepatocellular carcinoma (HCC) treatment. The reactivation of p53 is an attractive therapeutic strategy in cancer with disrupted-p53 function. Nutlin-3, a MDM2 antagonist, has antitumor activity in various cancers. The post-translational modifications of p53 are a hot topic, but there are some controversy ideas about the function of phospho-Ser392-p53 protein in cancer cell lines in response to Nutlin-3. Therefore, we investigated the relationship between Nutlin-3 and phospho-Ser392-p53 protein expression levels in SMMC-7721 (wild-type TP53) and HuH-7 cells (mutant TP53). We demonstrated that Nutlin-3 induced apoptosis through down-regulation phospho-Ser392-p53 in two HCC cells. The result suggests that inhibition of p53 phosphorylation on Ser392 presents an alternative for HCC chemotherapy. [BMB Reports 2014; 47(4): 221-226]
Xi Hu,Yicheng Zhao,Yang Huang,Chen Zhu,Jun Yao,Nana Fang 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.11
In urban vehicular edge computing (VEC) environments, one edge server always serves many task requests in its coverage which results in the resource-constrained problem. To resolve the problem and improve system utilization, we first design a general hierarchical resource management framework based on typical VEC network structures. Following the framework, a specific interacting protocol is also designed for our decision algorithm. Secondly, a greedy bidding-based multi-hop task scheduling decision algorithm is proposed to realize effective task scheduling in resource-constrained VEC environments. In this algorithm, the goal of maximizing system utility is modeled as an optimization problem with the constraints of task deadlines and available computing resources. Then, an auction mechanism named greedy bidding is used to match task requests to edge servers in the case of multiple hops to maximize the system utility. Simulation results show that our proposal can maximize the number of tasks served in resource constrained VEC networks and improve the system utility.