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    • 4. 发明申请
    • USE OF MICRORNA PRECURSORS AS DRUGS FOR INDUCING CD34-POSITIVE ADULT STEM CELL EXPANSION
    • 使用MICRORNA前列腺素作为诱导CD34阳性成年干细胞扩增的药物
    • US20160264974A1
    • 2016-09-15
    • US15167226
    • 2016-05-27
    • Shi-Lung LINDonald CHANGDavid TS WU
    • Shi-Lung LINDonald CHANGDavid TS WU
    • C12N15/113C12P19/34C12N15/70
    • C12N15/1135C12N15/111C12N15/113C12N15/70C12N2310/14C12N2310/141C12N2320/30C12N2330/50C12N2330/51C12P19/34
    • This invention generally relates to a composition and its production method useful for developing drugs/vaccines and/or therapies against a variety of degenerative diseases in humans. Particularly, the present invention teaches the essential steps of production and purification processes necessary for producing small hairpin-like RNA (shRNA) compositions, such as microRNA precursors (pre-miRNA) and short interfering RNAs (siRNA), which are useful for treating human ageing related diseases, such as, but not limited, Alzheimer's diseases, Parkinson's diseases, osteoporosis, diabetes, and cancers. The novelty of the present invention is to create an artificially enhanced adaptation environment for prokaryotic cells to adopt eukaryotic pol-2 and/or pol-2-like promoters for transcribing desired ncRNAs and/or their precursors without going through error-prone prokaryotic promoters, so as to improve the productive efficiency and reading fidelity of the shRNA transcription in the prokaryotic cells. The resulting shRNAs, preferably pre-miRNAs and siRNAs, are useful for developing therapeutic drugs against human degenerative diseases, particularly through a mechanism to induce CD34-positive stem cell expansion and/or regeneration.
    • 本发明一般涉及用于开发针对人类各种退行性疾病的药物/疫苗和/或疗法的组合物及其制备方法。 特别地,本发明教导了用于生产小发夹样RNA(shRNA)组合物,例如可用于治疗人类的微小RNA前体(pre-miRNA)和短干扰RNA(siRNA))所需的生产和纯化过程的基本步骤 衰老相关疾病,例如但不限于阿尔茨海默病,帕金森病,骨质疏松症,糖尿病和癌症。 本发明的新颖之处在于为原核细胞产生人造增强的适应环境,以采用真核的pol-2和/或pol-2样启动子来转录所需的ncRNA和/或其前体而不经历易错的原核启动子, 从而提高原核细胞中shRNA转录的生产效率和阅读保真度。 产生的shRNA,优选pre-miRNAs和siRNAs可用于开发针对人退行性疾病的治疗药物,特别是通过诱导CD34阳性干细胞扩增和/或再生的机制。
    • 10. 发明授权
    • Generation of human embryonic stem-like cells using intronic RNA
    • 使用内含子RNA产生人胚胎干细胞样细胞
    • US09567591B2
    • 2017-02-14
    • US12149725
    • 2008-05-07
    • Shi-Lung LinShao-Yao YingDavid Ts Wu
    • Shi-Lung LinShao-Yao YingDavid Ts Wu
    • C12N15/11C07H21/02C07H21/04C12Q1/68C12N5/02C12N15/64C12N15/63
    • C12N15/63
    • This invention generally relates to a method for developing, generating and selecting human embryonic stem (hES)-like pluripotent cells using transgenic expression of intronic microRNA-like RNA agents. More particularly, the present invention relates to a method and composition for generating a non-naturally occurring intron and its intronic components capable of being processed into mir-302-like RNA molecules in mammalian cells and thus inducing certain specific gene silencing effects on differentiation-related and fate-determinant genes of the cells, resulting in reprogramming the cells into a pluripotent embryonic stem (ES)-cell-like state. The ES-like cells so obtained are strongly express hES cell markers, such as Oct3/4, SSEA-3 and SSEA-4, and can be guided into various tissue cell types by treating certain hormones and/or growth factors under a feeder-free cell culture condition in vitro, which may be used for transplantation and gene therapies. Therefore, the present invention offers a simple, effective and safe gene manipulation approach for not only reprogramming somatic cells into ES-like pluripotent cells but also facilitating the maintenance of pluripotent and renewal properties of ES cells under a feeder-free cell culture condition, preventing the tedious retroviral insertion of four large transcription factor genes into one single cell as used in the previous iPS methods.
    • 本发明一般涉及使用内含子微RNA样RNA试剂的转基因表达来开发,产生和选择人胚胎干(hES)样多能细胞的方法。 更具体地说,本发明涉及一种用于产生非天然存在的内含子及其内含子组分的方法和组合物,其能够在哺乳动物细胞中加工成mir-302样RNA分子,从而诱导对分化 - 相关和命运决定基因,导致将细胞重编程为多能胚胎干(ES)细胞样状态。 如此获得的ES样细胞强烈表达hES细胞标志物,例如Oct3 / 4,SSEA-3和SSEA-4,并且可以通过在饲养层上处理某些激素和/或生长因子而被引导到各种组织细胞类型中, 体外免疫细胞培养条件,可用于移植和基因治疗。 因此,本发明提供了一种简单,有效和安全的基因操作方法,用于不仅将体细胞重编程为ES样多能细胞,而且有助于在无饲养细胞培养条件下维持ES细胞的多能性和更新性质,预防 将以前的iPS方法中使用的四个大转录因子基因的繁琐的逆转录病毒插入一个单细胞中。