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    • 4. 发明申请
    • VIRUS DERIVED ANTIMICROBIAL PEPTIDES
    • 病毒衍生的抗真菌肽
    • WO2002079397A2
    • 2002-10-10
    • PCT/US2002/004812
    • 2002-02-19
    • UNIVERSITY OF PITTSBURGH OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    • MONTELARO, Ronald, C.MIETZNER, Timothy
    • C12N
    • C07K14/005A01N63/00A01N63/02A61K38/00C12N2740/16122
    • The invention is directed to peptides having antimicrobial activity (antimicrobial peptides). The antimicrobial peptides of the present invention are analogs of the Lentivirus Lytic Peptide 1 (LLP1) amino acid sequence. The invention is further directed to peptides referred to as the Lytic Base Unit (LBU) peptides derived from the LLP1 analogs, also having antimicrobial activity. In addition, the present invention is also directed to methods of using the peptides in a variety of contexts, including the treatment of prevention of infectious diseases. The antimicrobial LLP1 analog peptides and the LBU peptides (collectively eLLPs) may be highly active under high salt conditions and in biologic fluids. In addition, the eLLPs are effective when presented either in soluble form, or when attached to a solid surface. Furthermore, the peptides of the present invention are selectively active against a wide variety of bacterial pathogens and exhibit minimal toxicity to eukaryotic cells in vitro and in vivo .
    • 本发明涉及具有抗微生物活性的肽(抗微生物肽)。 本发明的抗微生物肽是慢病毒溶血肽1(LLP1)氨基酸序列的类似物。 本发明进一步涉及也称为具有抗微生物活性的衍生自LLP1类似物的Lytic Base Unit(LBU)肽的肽。 此外,本发明还涉及在各种情况下使用肽的方法,包括预防感染性疾病的治疗。 抗菌LLP1类似物肽和LBU肽(统称为eLLP)在高盐条件和生物液体中可能是高度活性的。 此外,eLLP在以可溶形式存在或当连接到固体表面时是有效的。 此外,本发明的肽对于多种细菌病原体具有选择性的活性,并且在体外和体内对真核细胞表现出极小的毒性。
    • 5. 发明申请
    • RECOMBINANT LIGHT CHAINS OF BOTULINUM NEUROTOXINS AND LIGHT CHAIN FUSION PROTEINS FOR USE IN RESEARCH AND CLINICAL THERAPY
    • 用于研究和临床治疗的嗜碱性神经毒素和光链融合蛋白的重组轻链
    • WO02036758A2
    • 2002-05-10
    • PCT/US2001/047230
    • 2001-11-06
    • UNITED STATES ARMY MEDICAL RESEARCH AND MATERIAL COMMAND
    • SMITH, Leonard, A.JENSEN, Melody
    • C12N9/00
    • C07K14/33C12N9/6489
    • Botulinum neurotoxins, the most potent of all toxins, induce lethal neuromuscular paralysis by inhibiting exocytosis at the neuromuscular junction. The light chains (LC) of these dichain neurotoxins are a new class of zinc-endopeptidases that specifically cleave the synaptosomal proteins, SNAP-25, VAMP, or syntaxin at discrete sites. The present invention relates to the construction, expression, purification, and use of synthetic or recombinant botulinum neutoroxin genes. For example, a synthetic gene for the LC of the botulinum neurotoxin serotype A (BoNT/A) was constructed and overexpressed in Escherichia coli . The gene product was purified from inclusion bodies. The methods of the invention can provide 1.1 g of the LC per liter of culture. The LC product was stable in solution at 4 °C for at least 6 months. This rBoNT/A LC was proteolytically active, specifically cleaving the Glu-Arg bond in a 17-residue synthetic peptide of SNAP-25, the reported cleavage site of BoNT/A. Its calculated catalytic efficiency k cat /K m was higher than that reported for the native BoNT/A dichain. Treating the rBoNT/A LC with mercuric compounds completely abolished its activity, most probably by modifying the cysteine-164 residue located in the vicinity of the active site. About 70 % activity of the LC was restored by adding Zn 2+ -free, apo-LC preparation. The LC was nontoxic to mice and failed to elicit neutralizing epitope(s) when the animals were vaccinated with this protein. In addition, injecting rBoNT/A LC into sea urchin eggs inhibited exocytosis-dependent plasma membrane resealing.
    • 肉毒杆菌神经毒素是所有毒素中最有效的,通过抑制神经肌肉接头处的胞吐作用诱发致死性神经肌肉麻痹。 这些双链神经毒素的轻链(LC)是一类新的锌内肽酶,其在离散位点上特异性切割突触体蛋白,SNAP-25,VAMP或syntaxin。 本发明涉及合成或重组肉毒杆菌中毒素基因的构建,表达,纯化和使用。 例如,构建了肉毒杆菌神经毒素血清型A(BoNT / A)的LC的合成基因,并在大肠杆菌中过表达。 从包涵体纯化基因产物。 本发明的方法可以提供每升培养物1.1g的LC。 LC产品在4℃的溶液中稳定至少6个月。 这种rBoNT / A LC具有蛋白水解活性,特异性切割了SNAP-25的17位残基合成肽中的Glu-Arg键,这是所报道的BoNT / A切割位点。 其计算的催化效率kcat / Km高于天然BoNT / A二酮所报道的催化效率。 用汞化合物处理rBoNT / ALC完全消除其活性,最可能的是通过修饰位于活性位点附近的半胱氨酸164残基。 通过添加无Zn 2+的载脂蛋白制备,恢复了约70%的LC活性。 当对这些蛋白质接种动物时,LC对小鼠无毒,并且不能引发中和表位。 另外,将rBoNT / A LC注入海胆蛋抑制胞吐作用依赖性细胞膜再密封。
    • 8. 发明申请
    • SPLICEOSOME MEDIATED RNA TRANS-SPLICING FOR CORRECTION OF SKIN DISORDERS
    • SPLICEOSOME MEDIATED RNA TRANS-SPLICING FOR Corrients of Skine Disorders
    • WO2004006678A1
    • 2004-01-22
    • PCT/US2003/022469
    • 2003-07-17
    • INTRONN, INC.MITCHELL, Lloyd, G.PUTTARAJU, MadaiahDALLINGER, GuenterKLAUSEGGER, AlfredBAUER, Johann
    • MITCHELL, Lloyd, G.PUTTARAJU, MadaiahDALLINGER, GuenterKLAUSEGGER, AlfredBAUER, Johann
    • A01N47/40
    • C12N15/113A61K48/00C07H21/02C07H21/04C12N2510/00
    • The present invention provides methods and compositions for generating novel nucleic acid molecules through targeted spliceosomal mediated RNA traps-splicing. The compositions of the invention include pre-traps-splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) and mediate a traps-splicing reaction resulting in the generation of a novel chimeric RNA molecule (chimeric RNA). In particular, the PTMs of the present invention can be genetically engineered to interact with a specific target pre­mRNA expressed in cells of the skin so as to result in correction of genetic defects responsible for a variety of different skin disorders to encode a reporter molecule or protein that may have therapeutic value. The compositions of the invention further include recombinant vectors systems capable of expressing the PTMs of the invention and cells expressing said PTMs. The methods of the invention encompass contacting the PTMs of the invention with specific target pre-Mrna expressed within cells of the skin under conditions in which a portion of the PTM is traps-spliced to a portion of the target pre-mRNA to form a chimeric RNA molecule wherein the genetic defect in the specific gene has been corrected. The present invention is based on the successful trans -splicing of the collagen XVII pre-mRNA thereby establishing the usefulness of trans -splicing for correction of skin specific genetic defects. The methods and compositions of the present invention can be used in gene therapy for treatment of specific disorders of the skin, i.e ., genodermatoses, such as epidermal fragility disorders, keratinization disorders, hair disorders and pigmentation disorders as well as cancers of the skin.
    • 本发明提供了通过靶向剪接体介导的RNA捕获 - 剪接产生新的核酸分子的方法和组合物。 本发明的组合物包括设计成与靶前体信使RNA分子(靶前体mRNA)相互作用的诱捕前剪接分子(PTM),并介导产生新型嵌合RNA分子的陷阱剪接反应(嵌合 RNA)。 特别地,本发明的PTM可以进行遗传工程改造以与皮肤细胞中表达的特异性靶基因前体RNA相互作用,从而导致对多种不同皮肤病症负责编码报告分子或蛋白质的遗传缺陷的校正 这可能有治疗价值。 本发明的组合物还包括能够表达本发明的PTM和表达所述PTM的细胞的重组载体系统。 本发明的方法包括使本发明的PTM与在皮肤细胞内表​​达的特异性靶前Mrna接触,其中一部分PTM被剪接到目标前mRNA的一部分以形成嵌合体 其中特异性基因的遗传缺陷已被校正的RNA分子。 本发明基于胶原XVII前体mRNA的成功的转拼,从而确定了用于修复皮肤特异性遗传缺陷的转拼的有用性。 本发明的方法和组合物可用于治疗皮肤特异性病症的基因疗法,即皮肤病,如表皮脆性障碍,角质化病症,毛发病症和色素沉着病以及皮肤癌。
    • 9. 发明申请
    • SPLICEOSOME MEDIATED RNA TRANS-SPLICING IN STEM CELLS
    • WO2003104416A3
    • 2003-12-18
    • PCT/US2003/017954
    • 2003-06-05
    • INTRONN, INC.MITCHELL, Lloyd, G.ENGLEHARDT, JohnLIU, Xiao, Ming
    • MITCHELL, Lloyd, G.ENGLEHARDT, JohnLIU, Xiao, Ming
    • C12P19/34
    • The present invention provides methods and compositions for generating novel nucleic acid molecules through targeted spliceosomal mediated trans -splicing in stem cells. The compositions of the invention include stem cells engineered to express pre- trans -splicing molecules (PTMs) designed to interact with a target precursor messenger RNA molecule (target pre-mRNA) and mediate a trans­ -splicing reaction resulting in the generation of novel chimeric RNA molecules (chimeric RNA). In particular, the stem cells of the present invention are genetically engineered to express a PTM that will interact with a specific target pre-mRNA expressed within a stem cell as it differentiates so as to result in correction of a genetic defect responsible for a genetic disorder. The methods of the invention encompass transferring a nucleic acid molecule capable of encoding a PTM of interest into a stem cell followed by transplantation of the PTM modified stem cell into a host. As the stem cell differentiates the target pre-mRNA is expressed thereby providing the substrate for a trans -splicing reaction. The present invention is based on the successful transfer and expression of a nucleic acid molecule encoding a PTM capable of interacting with a cystic fibrosis transmembrane conductance regulator (CFTR) pre-mRNA into primary human surface airway progenitor cells. The methods and compositions of the present invention can be used to correct genetic defects associated with a variety of different disorders such as cystic fibrosis, hemophilia, sickle cell anemia, Tay-Sachs disease, thalassemias, polycystic kidney disease and muscular dystrophy, to name a few.