A METHOD FOR INCREASING POPULATION OF SPERMATOGONIAL STEM CELLS

    公开(公告)号:US20210386792A1

    公开(公告)日:2021-12-16

    申请号:US17416340

    申请日:2018-12-19

    申请人: Dong Ha BHANG

    摘要: Maintenance of adult tissues depends on stem cell self-renewal in local niches. Spermatogonial stem cells (SSC) are germline adult stem cells necessary for spermatogenesis and fertility. The present invention relates utilization of testicular endothelial cells (TECs) in the SSC niche producing glial cell line-derived neurotrophic factor (GDNF) and other factors to support human and mammal SSCs in long-term culture. The present invention also relates to utilization of five factors sufficient for long-term maintenance of human and mammal SSC colonies in feeder-free cultures. Male cancer survivors after chemotherapy are often infertile since SSCs are highly susceptible to cytotoxic injury. Transplantation of TECs alone is used to restore spermatogenesis in mice after chemotherapy-induced depletion of SSCs.

    METHODS FOR USE OF SEX SORTED SEMEN TO IMPROVE GENETIC MANAGEMENT IN SWINE

    公开(公告)号:US20190133736A1

    公开(公告)日:2019-05-09

    申请号:US16239315

    申请日:2019-01-03

    申请人: Inguran, LLC

    摘要: The invention relates to methods of increasing genetic merit of swine by establishing a plurality of mating subtypes for a line of swine, and determining a percentage of progeny that are male for each of the mating subtypes, or a percentage of progeny that are female for each of the mating subtypes, that would result, relative to a control, in an increase in genetic merit in the line; the invention further relates to sorting a sperm cell sample from a male swine in one of the mating subtypes into one or more subpopulations of sperm cells, wherein a majority of sperm cells in a subpopulation of sperm cells bear X chromosomes or Y chromosomes, and inseminating one or more female swine in the one of the mating subtypes with the subpopulation of sperm cells to achieve the percentage of progeny that are male, or the percentage of progeny that are female, determined to increase genetic merit relative to the control.

    System for the preservation of a predetermined dose of liquid-based substance in particular diluted animal semen

    公开(公告)号:US10278798B2

    公开(公告)日:2019-05-07

    申请号:US15314330

    申请日:2015-05-27

    申请人: IMV TECHNOLOGIES

    发明人: Eric Schmitt

    摘要: The system comprises a straw and a liquid dilution medium. The straw comprises a tube (11) extending between a first end and a second end and comprises a gas-permeable, liquid-tight plug, said plug being arranged in the tube (11) in the vicinity of the first end of same and extending between a first end turned towards the first end of the tube (11) and a second end turned towards the second end of the tube (11). Said plug comprises an element (14) impregnated with a reagent (22) at least in the vicinity of a first end turned towards the second end of the tube (11). The liquid medium is provided to produce, by mixing, in predefined conditions, the liquid substance (21). The reagent (22) and the medium(27) are configured such that, when the substance (21) comes into contact with the first end of the impregnated element (14), it forms a hydrogel.

    METHODS FOR USE OF SEX SORTED SEMEN TO IMPROVE GENETIC MANAGEMENT IN SWINE

    公开(公告)号:US20180161137A1

    公开(公告)日:2018-06-14

    申请号:US15853010

    申请日:2017-12-22

    申请人: Inguran, LLC

    摘要: The invention relates to methods of increasing genetic merit of swine by establishing a plurality of mating subtypes for a line of swine, and determining a percentage of progeny that are male for each of the mating subtypes, or a percentage of progeny that are female for each of the mating subtypes, that would result, relative to a control, in an increase in genetic merit in the line; the invention further relates to sorting a sperm cell sample from a male swine in one of the mating subtypes into one or more subpopulations of sperm cells, wherein a majority of sperm cells in a subpopulation of sperm cells bear X chromosomes or Y chromosomes, and inseminating one or more female swine in the one of the mating subtypes with the subpopulation of sperm cells to achieve the percentage of progeny that are male, or the percentage of progeny that are female, determined to increase genetic merit relative to the control.

    ADULT BONE MARROW CELL TRANSPLANTATION TO TESTES CREATION OF TRANSDIFFERENTIATED TESTES GERM CELLS, LEYDIG CELLS AND SERTOLI CELLS
    10.
    发明申请
    ADULT BONE MARROW CELL TRANSPLANTATION TO TESTES CREATION OF TRANSDIFFERENTIATED TESTES GERM CELLS, LEYDIG CELLS AND SERTOLI CELLS 审中-公开
    成骨细胞移植以测试转化的TESTES细胞,LEYDIG细胞和SERTOLI细胞的产生

    公开(公告)号:US20150258149A1

    公开(公告)日:2015-09-17

    申请号:US14508763

    申请日:2014-10-07

    IPC分类号: A61K35/52 A61K31/568

    摘要: This invention pertains to the discovery that stem cells (e.g., bone marrow stem cells) transplanted directly into a testicular environment are transdifferentiated into bona fide Sertoli cells, and/or Leydig cells, and/or and germ cells. This provides a mechanism for the treatment of male infertility and/or testosterone deficiency. Thus, in one embodiment, this invention provides a method of treating infertility or testosterone deficiency in a male mammal. The method typically involves implanting stem cells into the testes of the mammal whereby the stem cells differentiate into germ cells and/or Sertoli cells and/or Leydig cells thereby reducing infertility and/or testosterone deficiency.

    摘要翻译: 本发明涉及直接移植到睾丸环境中的干细胞(例如,骨髓干细胞)被转分化为真正的支持细胞和/或Leydig细胞和/或生殖细胞的发现。 这提供了治疗男性不育症和/或睾酮缺乏症的机制。 因此,在一个实施方案中,本发明提供了治疗男性哺乳动物不育症或睾酮缺乏症的方法。 该方法通常包括将干细胞植入哺乳动物的睾丸中,由此干细胞分化成生殖细胞和/或支持细胞和/或莱迪格细胞从而减少不育症和/或睾酮缺乏症。