专利号:AU-2020409711-A1 优先权日:2019-12-20 标题 :Synthesis of lactone derivatives and their use in the modification of proteins
专利号:EP-4076533-A1 优先权日:2019-12-20 标 题:Synthesis of lactone derivatives and their use in the modification of proteins
专利号:US-7192768-B2 优先权日:2000-04-06 标题:Synchronization of the cytoplasmatic and the nuclear maturation of oocytes in vitro 发明人:ANDERSEN CLAUS YDING; BYSKOV ANNE GRETE 权利人:NOVO NORDISK AS 摘要:The present invention relates to a method for in vitro maturation of oocytes comprising the steps of:n (a) culturing one or more GV oocytes in a culture medium, the culture medium comprising a nuclear maturation inhibiting substance and comprising one or more gonadotropins and/or one or more growth factors, the culturing taking place for a time period sufficient for cytoplasmatic maturation to occur; (b) washing the GV oocytes of step (a) to remove the nuclear maturation inhibiting substance; (c) culturing the washed oocytes of step (b) in a culture medium comprising one or more gonadotropins and/or one or more growth factors and/or MAS for a time period sufficient for nuclear maturation. nn The invention also relates to an oocyte culture medium comprising a nuclear maturation inhibiting substance and comprising one or more gonadotropins and/or one or more growth factors. The nuclear maturation inhibiting substance may be a MAS antagonist or an FF-MAS synthesis inhibitor, preferably a cytochrome P450 lanosterol 14α-demethylase (P45014DM) inhibitor e.g. ketoconazole or 22-hydroxycholesterol. The one or more gonadotropins and/or one or more growth factors are preferably a combination of EGF and FSH and/or LH. n The invention also relates to the use of a nuclear maturation inhibiting substance and one or more gonadotropins and/or one or more growth factors as described above for the preparation of a cell culture medium for in vitro maturation of oocytes.
专利号:CA-3164962-A1 优先权日:2019-12-20 标题 :Synthesis of lactone derivatives and their use in the modification of proteins
专利号:US-5919621-A 优先权日:1991-10-24 标 题 :Methods for diagnosing human male infertility 发明人:BROWN DAVID B 摘要:A method for determining the capacity of a human sperm to fertilize a human egg is described by assessing sperm activation events in an in vitro assay using a non-mammalian egg extract, particularly a Xenopus laevis frog egg extract. Fertilizing capacity is assessed as a comparison of sperm decondensation, DNA synthesis and/or sperm recondensation as between a test sperm sample sperm and fertile sperm, such as a sperm sample from a proven fertile human male. The method employs results from the in vitro assay to also determine relative sufficiency or insufficiency of a sperm sample for fertilizing a human egg in human couples with a history of a diagnosed unexplained infertility from standard infertility diagnostic tests. The method may also be used to screen human sperm donors in human artificial insemination programs. A fixed-slide cytoprep sperm analysis of decondensed sperm chromatin, as between a sperm test sample and a sperm sample from a proven fertile human male, may also be used to confirm in vitro decondensation results of the infertility or fertility of a particular human male. A kit is also provided for testing male sperm samples for human egg fertilizing capacity.
专利号:US-2007148246-A1 优先权日:2005-08-11 标题:Nucleic Acid-Based Matrixes 发明人:LUO DAN; LI YOUGEN 权利人:LUO DAN; LI YOUGEN 摘要:Various nucleic acid-based matrixes are provided, comprising nucleic acid monomers as building blocks, as well as nucleic acids encoding proteins, so as to produce novel biomaterials. Methods of utilizing such biomaterials include delivery of biologically active agents, cell and tissue culture, and cell-free protein synthesis.