Publications by authors named "Xu Zhi Ruan"

BARMR1/FAM92A1 encodes a novel BAR domain protein, and is widely expressed during embryonic development and highly expressed in tumor cells. Mutation or deletion of BARMR1/FAM92A1 caused developmental disorder and the BARMR1/FAM92A1 overexpression in tumor cells is associated with poor prognosis. The subcellular location of BARMR1/FAM92A1 determined its biological functions by interacting with different proteins.

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Background: FAM92A1-289(abbreviated FAM289) is recognized as one of the newly-discovered putative oncogenes. However, its role and molecular mechanisms in promoting cancer progression has not yet been elucidated. This study was performed to reveal its oncogenic functions and molecular mechanisms in human glioblastoma multiforme (GBM) cell models with knockdown or overexpression of FAM289 in vitro and in vivo.

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Background/aim: FAM92A1-289 is recognized as one of the newly-discovered putative oncogenes. This study was performed to reveal its oncogenic functions in human cervical carcinoma cells.

Materials And Methods: The FAM92A1-289 cell line was established with knock-in technique and selected by puromycin-resistance screening.

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p120-catenin (p120), an E-cadherin regulator, has been implicated as central to a series of genetic and epigenetic changes that ultimately lead to tumor progression and metastasis. Ras-related C3 botulinum toxin substrate 1 (Rac1)and p21-activated kinases (PAKs) are effectors of p120. In the present study, we examined the expression of p120, Rac1 and Pak1 using immunohistochemistry in human gastric cancer tissues.

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Aims: Investigation of the response of mesenchymal stem cells (MSCs) to vascular mechanical forces is very important in the field of cardiovascular intervention. Ser/Thr-protein kinase Pim-1 is a novel transducer of cell survival and the cell cycle that promotes signals in the hematopoietic cell system. Current studies aim to foster an understanding of Pim-1 expression and regulation in MSCs in response to different durations and strengths of laminar shear stress (SS) and to investigate the role of Pim-1 in SS-induced cell proliferation.

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Apoptosis plays an important role in embryonic development. PNAS-4 has been demonstrated to induce apoptosis in several cancer cells. In this study, we cloned Xenopus laevis PNAS-4 (xPNAS-4), which is homologous to the human PNAS-4 gene.

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Biot2 is a novel murine testis-specific gene that was first identified using the SEREX technique, and named by our laboratory. Using conventional RT-PCR and real time RT-PCR, we tested the expression profile of Biot2 in normal tissues and various murine tumor cell lines. Using RNA interference, we studied the biological function of Biot2 in tumorigenesis.

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The aza-Wittig reactions of iminophosphorane 3 with aromatic isocyanates generated carbodiimides 4, which were reacted with alkylamines under mild conditions to give a series of 2-(alkylamino)-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-ones 6 and 8 in satisfactory yield. Their structures were confirmed by (1)H NMR, EI-MS, IR and elementary analysis, and compound 8c was further analyzed by single-crystal X-ray diffraction. The preliminary bioassays indicated that these compounds showed excellent fungicidal activities against six kinds of fungi.

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FAM92A1 (named FAM92A1-271) belongs to the family of proteins with conserved DUF1208 domains. Its function remains elusive. We identified two novel transcript variants (FAM92A1-251, FAM92A1-289) of FAM92A1.

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Xenopus laevis has recently been determined as a novel study platform of gene function. In this study, we cloned Xenopus DRR1 (xDRR1), which is homologous to human down-regulated in renal carcinoma (DRR1) gene. Bioinformatics analysis for DRR1 indicated that xDRR1 shared 74% identity with human DRR1 and 66% with mouse DRR1, and the phlogenetic tree of DRR1 protein was summarized.

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Aim: To study the biological effects of the novel tumor/testis antigen Biot2 on proliferation of NIH3T3 cell and to identify the preliminary biological functions of it.

Methods: The Biot2 gene was amplified by RT-PCR and cloned into the eukaryotic expression vector pcDNA3.1(+) to construct the pcDNA3.

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Human DRR1 (down-regulated in renal cell carcinoma 1) is widely expressed in normal tissues but dramatically reduced or even undetectable in a number of different cancer cell lines and primary tumour types. DRR1 from Homo sapiens was cloned into the pQE30 vector for fusion-protein expression with six histidine residues in Escherichia coli BL21(DE3). A soluble protein with a molecular mass of approx.

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We have identified a novel Xenopus gene (xVAP019) encoding a DUF1208 domain containing protein. Using whole-mount in situ hybridization and RT-PCR, we found abundant xVAP019 maternal transcripts in the animal hemisphere during the cleavage stages and blastula stages. During gastrulation xVAP019 is differentially expressed with higher levels in the animal helf and the highest in marginal zone, then further expressed widely at neuronal stages with strongest signals in the prospective CNS regions and the epidermal ectoderm.

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No satisfactory effects have been obtained with the use of synthetic blood vessels (diameter <6 mm) as substitutes for human small arteries or veins for the purpose of clinical vascular reconstruction. Therefore, blood vessels of human origin, for example, umbilical cord blood vessels, with their wide availability, still should be considered. However, little information on biomechanical properties of human umbilical cord blood vessels is available.

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