[EN] INDIRUBIN COMPOUNDS AND METHODS THEREOF [FR] COMPOSÉS D'INDIRUBINE ET LEURS PROCÉDÉS D'UTILISATION
摘要:
The present disclosure discloses a compound of Formula I and the process of preparation thereof. The present disclosure discloses indirubin compounds of Formula I which are potent inducers of autophagy. The present disclosure also discloses a pharmaceutical composition comprising compound of Formula I and methods thereof.
The Indirubin Derivative 6-Bromoindirubin-3′-Oxime Activates Proteostatic Modules, Reprograms Cellular Bioenergetic Pathways, and Exerts Antiaging Effects
摘要:
Aims: Organismal aging can be delayed by mutations that either activate stress responses or reduce the nutrient-sensing pathway signaling; thus, by using Drosophila melanogaster as an in vivo experimental screening platform, we searched for compounds that modulate these pathways.Results: We noted that oral administration of the glycogen synthase kinase 3 (Gsk-3) inhibitor 6-bromoindirubin-3-oxime (6BIO) in Drosophila flies extended healthy life span. 6BIO is not metabolized in fly tissues, modulated bioenergetic pathways, decreased lipid and glucose tissue load, activated antioxidant and proteostatic modules, and enhanced resistance to stressors. Mechanistically, we found that the effects on the stress-responsive pathways were largely dependent on the activity of the transcription factor nuclear factor erythroid 2-related factor (Nrf-2). Genetic inhibition of Gsk-3 largely phenocopied the 6BIO-mediated effects, while high levels of Gsk-3 expression and/or kinase activity suppressed proteostatic modules and reduced flies' longevity; these effects were partially rescued by 6BIO. Also, 6BIO was found to partially reduce the 3-phosphoinositide-dependent protein kinase-1 (Pdpk1) activity, a major effector of the insulin/insulin-like growth factor-1 cell signaling pathways.Innovation: 6BIO exerts the unique property of increasing stress tolerance and in parallel partially suppressing the nutrient-sensing pathway signaling.Conclusion: Our findings suggest that the 6BIO scaffold can be used for the development of novel antiaging compounds.
Indirubin and itsderivatives have been reported to exhibit anti-cancer and anti-inflammatory activities. Recently, some of its derived analogs have been shown to have neuroprotective potential. Endoplasmic reticulum (ER) stress has been demonstrated to contribute to the pathogenesis of various neurodegenerative diseases, whereas the effects of indirubin derivatives on ER stress-induced cell death
The invention is directed, in part, to compounds of structure (I)
to treat or prevent hearing loss. Compounds of the present invention also promote sensory hair cell regeneration. Particular compositions comprise compounds of structure (I), and optionally one or more small molecules that increase the proliferation of supporting cells.
There is described an apparatus for measuring protein characteristics comprising an X-ray fluorescence (XRF) spectrometer comprising a source of polychromatic X-rays, an X-ray detector, a protein, a molecule that has been exposed to and at least weakly binds to the protein, a plurality of X-ray fluorescence signal data obtained by irradiating chemical elements in the protein and molecule with the polychromatic X-rays and a security system for maintaining records for the data from the plurality of X-ray fluorescence signal measurements. There is also described an x-ray microscope for measuring a sample.
描述了一种测量蛋白质特性的仪器,该仪器包括一个 X 射线荧光 (XRF) 光谱仪,其中包括一个多色 X 射线源、一个 X 射线探测器、一个蛋白质、一个已暴露于该蛋白质并至少与该蛋白质弱结合的分子、通过用多色 X 射线照射蛋白质和分子中的化学元素而获得的多个 X 射线荧光信号数据,以及一个用于维护多个 X 射线荧光信号测量数据记录的安全系统。此外,还介绍了一种用于测量样品的 X 射线显微镜。
Mammalian neural plate border stem cells capable of forming neural tube and neural crest cell lineages including central and peripheral neurons
申请人:Max-Planck-Gesellschaft zur Förderung der
Wissenschaften e.V.
公开号:EP2614829A1
公开(公告)日:2013-07-17
The present invention relates to a method for producing mammalian neural plate border stem cells (NPBSCs), comprising: (a) differentiation of mammalian pluripotent stem cells by (a-i) culturing mammalian pluripotent stem cells in pluripotent stem cell medium for about 24 to about 96 hours, wherein the pluripotent stem cell medium comprises: (i) an inhibitor of the activin/TGF-β signalling pathway; (ii) an inhibitor of the BMP signalling pathway; (iii) an activator of the canonical WNT signalling pathway; and (iv) an activator of the Hedgehog signalling pathway; subsequently (a-ii) culturing the cells obtained in step (a-i) for about 24 to about 96 hours in a neural medium, wherein the neural medium comprises: (i) an inhibitor of the Activin/TGF-β signalling pathway; (ii) an inhibitor of the BMP signalling pathway; (iii) an activator of the canonical WNT signalling pathway; and (iv) an activator of the Hedgehog signalling pathway; subsequently (a-iii) culturing the cells obtained in step (a-ii) for about 24 to about 96 hours in a neural medium, wherein the neural medium comprises: (i) an activator of the canonical WNT signalling pathway; (ii) an activator of the Hedgehog signalling pathway; and (iii) an inhibitor of oxidation; and (b) plating the obtained differentiated mammalian pluripotent stem cells in NPBSCs expansion medium, wherein the NPBSCs expansion medium comprises (i) an activator of the canonical WNT signalling pathway; (ii) an activator of the Hedgehog signalling pathway; and (iii) an inhibitor of oxidation; and expanding the cells in the NPBSCs expansion medium for about 24 to about 96 hours; (c) splitting the cells obtained in (b) and further expanding the cells in the NPBSCs expansion medium; and (d) repeating step (c) at least two times. The present invention further relates to neural plate border stem cells obtainable by the method of the invention and the use of the cells of the invention in medicine.
Methods and compositions for producing hepatocyte-like cells
申请人:The Board of Trustees of the Leland Stanford Junior University
公开号:US10004767B2
公开(公告)日:2018-06-26
Methods are provided for producing a population of hepatocyte-like cells (iHeps) from a population of adipocyte-derived stem cells (ASCs). Aspects of the methods include placing a population of ASCs into a three dimensional culture (e.g., hanging drop suspension culture, high density culture, spinner flask culture, microcarrier culture, etc.), and contacting the cells with a first and second culture medium. Also provided are methods of treating an individual, which include producing a population of iHeps from a population of ASCs, and administering an effective number of iHeps into the individual. Kits for practicing the methods are also described herein.