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5 ml/10 ml sterile serological pipets

Company: Genesee Scientific
Catalog#: 12-102
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Using RNA Sequencing and Spike-in RNAs to Measure Intracellular Abundance of lncRNAs and mRNAs
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Date:
2020-10-05
[Abstract]  Long noncoding RNAs (lncRNAs) play essential roles in normal physiology and in disease but their mechanisms of action can be challenging to identify. For mechanistic studies, it is often useful to know a lncRNA’s intracellular abundance, i.e., approximately how many molecules of the lncRNA are present in a typical cell of a cell-type of interest. At least two approaches have been used to approximate lncRNA intracellular abundance: single-molecule sensitivity RNA fluorescence in situ hybridization (smFISH) and single-gene, calibrated reverse-transcription followed by quantitative PCR (RT-qPCR). However, like all experimental approaches, these methods have their limitations. smFISH, when analyzed using diffraction-limited microscopy, can underestimate intracellular ... [摘要]  [摘要]长非编码RNA(lncRNA)在正常生理和疾病中起着至关重要的作用,但其作用机理可能难以鉴定。对于机理研究,了解lncRNA的胞内丰度(即在目标细胞类型的典型细胞中大约存在多少个lncRNA分子)通常很有用。至少两种方法已用于估算lncRNA细胞内丰度:单分子敏感性RNA荧光原位杂交(smFISH ...

Mandibular Explant Assay for Investigating Extrinsic Stimuli on Bone and Cartilage Development
Author:
Date:
2017-12-05
[Abstract]  A major issue in developmental biology is to determine how embryonic tissues respond to molecular signals in a timely manner and given the position-restricted instructions during morphogenesis, of which Meckel’s cartilage is a classical example. The ex-vivo explant model is a practical and convenient system that allows investigation of bone and cartilage responses to specific stimuli under a controlled manner that closely mimics the in vivo conditions. In this protocol, the explant model was applied to test whether Meckel’s cartilage and surrounding tissues are responsive to the Endothelin1 (Edn1) signaling molecule and whether it would rescue the phenotype of genetic mutations. The system allows a high degree of manipulation in terms of the concentrations of exogenous ... [摘要]  发育生物学中的一个主要问题是确定胚胎组织如何及时响应分子信号,并且在形态发生期间给予位置限制指示,其中Meckel软骨是一个经典的例子。 体外外植体模型是一种实用且便利的系统,其允许以受控的方式调查对特定刺激的骨和软骨反应,所述方式严格模拟体内条件。 在这个协议中,外植模型被用来测试Meckel的软骨和周围组织是否对内皮素1(Edn1)信号分子有反应,以及是否会拯救基因突变的表型。 该系统允许在添加到外植体中的外源性化合物的浓度,关于测量下颌骨发育的时间点以及施用外源分子和致畸剂的方法方面进行高度的操作。

【背景】颅面畸形是人类最常见的先天性出生缺陷(Miettinen等人,1999)。许多这些畸形发生在面部形态发生期间,这是一个复杂的多步骤过程,其中颅神经嵴细胞迁移到咽弓以产生许多面部结构(Jin等人,2011)。

特定基因内的两种变异以及基因 - 基因相互作用都可能导致颅面变形。 IRF6基因突变导致头面部外胚层和上皮细胞的形成,导致唇裂,腭裂和下颌畸形。与 IRF6 相比, TWIST1 基因调节胚胎发育期间的神经管闭合和颅骨发育期间的颅缝融合。 TWIST1 ...

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