Abstract:
The present invention relates to a method for producing male sterile plant, a mutated nucleotide molecule comprising a nucleotide sequence of the transcription factor bHLH142 and an inserted T-DNA segment, and a novel transformed plant cell and a male-sterile mutant plant comprising the mutated nucleotide molecule, in which the transcription factor bHLH142 is not expressed. The present invention also relates to a novel reversible male sterile transgenic plant, wherein the transcription factor bHLH142 is overexpressed, and its preparation method. The bHLH gene is tissue specifically expresses in the anther and it plays a pivotal role in pollen development. Both the male sterile and reversible male sterile transgenic plants showed a completely male sterile phenotype, but the fertility of the reversible male sterile transgenic plant can be restored under low temperature.
Abstract:
A method for releasing viruses includes the steps of: preparing a first negatively charged complex, comprising a plurality of viruses, a plurality of polyethyleneimine particles, and a copolymer; transferring the complex to an acidic region, thereby transforming the complex into a positively charged complex to release a portion of the viruses in the acidic region; and transferring the complex to a non-acidic region, thereby transforming the positively charged complex into a negatively charged complex. One embodiment of the copolymer has the following chemical formula: wherein R1 represents aliphatic compounds or aromatic compounds, and R2 includes at least one negatively charged group.
Abstract:
An optical module includes at least a carrying stage, at least an actuator unit and at least an optical assembly. The carrying stage has a first aperture. The actuator unit is disposed at one side of the carrying stage and has a second aperture. The optical assembly is connected with the actuator unit, and the actuator unit adjusts the position of the optical assembly. A radiated wave enters from one side of the optical module and passes through the first aperture, the second aperture and the optical assembly. A microscope with the optical module has compact size and is easily assembled and carried. The optical module and microscope can efficiently reduce the effect of ambient temperature variations so as to improve the measuring stability thereof.
Abstract:
A method of enhancing neprilysin activity and/or degrading amyloid-β peptides and/or oligomers in a subject with Alzheimer's disease is disclosed. The method comprises administering to the subject a compound selected from the group consisting of in a therapeutically effective amount to enhance the neprilysin activity and/or degrade the amyloid-β peptides and oligomers in the subject. Methods of improving symptoms and/or retarding progression of Alzheimer's disease and prophylactic treatment and/or treatment of Alzheimer's disease are also disclosed.
Abstract:
The present invention provides compounds which are potent inhibitors against Lpd activity, PDH activity, and/or the growth of tubercle bacillus, and thus are useful in the treatment of tuberculosis infection and associated conditions. The present invention is further directed to in vitro- and in vzivo-based methods of inhibiting Lpd and/or PDH activity. In certain embodiments, these methods are useful in inhibiting Lpd and/or PDH activity key to a pathogen's survival.
Abstract:
A method for imaging an object using a microscope includes obtaining axial response data, the axial response data representative of a relationship between a separation between a top surface of the object and an objective lens of the microscope and an intensity of light reflected by the top surface of the object; positioning the object at a distance from the objective lens that is within a linear region of the axial response data; sequentially illuminating the object with a plurality of periodic patterns; obtaining a plurality of images of the object, each image resulting from the illumination of the object with a corresponding one of the plurality of periodic patterns; determining a reconstructed image of the object based on the plurality of images of the object; and, based on variations in the intensity of the reconstructed image, determining a topographic profile of the top surface of the object.
Abstract:
An immunogenic composition containing a glycan conjugate including a carrier protein, and a glycan including Globo H, an immunogenic fragment thereof, or stage-specific embryonic antigen-4 (SSEA-4), wherein the glycan is conjugated with the carrier protein through a linker.
Abstract:
In a transgenic plant, a stress-responsive promoter containing CE3 and ABRE2 from HVA1 ABRC3 and CE1 from HVA22 ABRC1, directs low background expression of a gene under normal growth conditions, but is highly inducible by an abiotic stress, such as abscisic acid, dehydration, salt or cold. Compared with the wild type plant, the transgenic plant that expresses a stress-resistant gene under the control of the stress-responsive promoter is more resistant and/or tolerant to abiotic stresses and exhibits similar or higher growth rate and strength under regular or normal environmental conditions.
Abstract:
An isolated monoclonal antibody or an antigen-binding fragment thereof is disclosed. The antibody or the antigen-binding fragment is characterized by: (a) having a specific binding affinity to epithelial cell adhesion molecule (EpCAM) comprising the amino acid sequence of SEQ ID NO: 1; (b) having a specific binding affinity to cancer cells expressing EpCAM said cancer cells being selected from the group consisting of oral cancer cells, nasopharyngeal cancer cells (NPC), colorectal cancer cells, and ovarian cancer cells; and (c) having no binding affinity to human umbilical vein endothelial cell (HUVEC) and normal nasal mucosal epithelia (NNM). Also disclosed is an isolated monoclonal antibody or an antigen-binding fragment thereof that has a specific binding affinity to an epitope within the sequence of KPEGALQNNDGLYDPDCDE (SEQ ID NO: 63) located within the EGF-like domain II of epithelial cell adhesion molecule (EpCAM). Methods of using the same are also disclosed.
Abstract translation:公开了分离的单克隆抗体或其抗原结合片段。 抗体或抗原结合片段的特征在于:(a)对包含SEQ ID NO:1的氨基酸序列的上皮细胞粘附分子(EpCAM)具有特异性结合亲和力; (b)对表达EpCAM的癌细胞具有特异性结合亲和力,所述癌细胞选自口腔癌细胞,鼻咽癌细胞(NPC),结肠直肠癌细胞和卵巢癌细胞; 和(c)对人脐静脉内皮细胞(HUVEC)和正常鼻粘膜上皮细胞(NNM)没有结合亲和力。 还公开了与位于上皮细胞粘附分子(EpCAM)的EGF样结构域II内的KPEGALQNNDGLYDPDCDE(SEQ ID NO:63)的序列内的表位具有特异性结合亲和力的分离的单克隆抗体或其抗原结合片段 )。 还公开了使用该方法的方法。
Abstract:
Cancer-targeting peptides having a PX1LX2 motif, in which X1 is His or an amino acid residue with a hydrophobic side chain and X2 is Pro, Phe, or Trp. Also disclosed herein are conjugates containing the cancer-targeting peptides and uses thereof in cancer treatment and diagnosis.