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Top 10 Most-read Protocols
Most Read rankings are calculated based on published articles (since 2015) read in the last two months. Rankings are calculated monthly. Rankings are based on page view data provided by Google Analytics.
Latest Protocol Video
Differentiation of Mouse Embryonic Stem Cells to Neuronal Cells Using Hanging Droplets and Retinoic Acid
Single-molecule Fluorescence
in situ
Hybridization (smFISH) for RNA Detection in Adherent Animal Cells
Authors:
Gal Haimovich
and
Jeffrey E. Gerst
,
date:
11/05/2018,
view:
7685,
Q&A:
1
Transcription and RNA decay play critical roles in the process of gene expression and the ability to accurately measure cellular mRNA levels is essential for understanding this regulation. Here, we describe a single-molecule fluorescent
in situ
hybridization (smFISH) method (as performed in Haimovich
et al.
, 2017) that detects ...
Measurement of Oxygen Consumption Rate (OCR) and Extracellular Acidification Rate (ECAR) in Culture Cells for Assessment of the Energy Metabolism
Authors:
Birte Plitzko
and
Sandra Loesgen
,
date:
05/20/2018,
view:
26389,
Q&A:
0
Mammalian cells generate ATP by mitochondrial (oxidative phosphorylation) and non-mitochondrial (glycolysis) metabolism. Cancer cells are known to reprogram their metabolism using different strategies to meet energetic and anabolic needs (Koppenol
et al.
, 2011; Zheng, 2012). Additionally, each cancer tissue has its own individual ...
BODIPY 493/503 Staining of Neutral Lipid Droplets for Microscopy and Quantification by Flow Cytometry
Authors:
Bo Qiu
and
M. Celeste Simon
,
date:
09/05/2016,
view:
32021,
Q&A:
0
Lipid droplets (LDs) are ubiquitous, dynamic organelles and function as a storage depot for neutral lipids, including triglycerides and cholesterol esters (Walther and Farese, 2012). The movement of lipid species into and out of LDs impacts a variety of cellular processes, such as energy homeostasis, lipid-based signaling, and membrane homeostasis ...
mRNA Stability Assay Using Transcription Inhibition by Actinomycin D in Mouse Pluripotent Stem Cells
Authors:
Madara Ratnadiwakara
and
Minna-Liisa Änkö
,
date:
11/05/2018,
view:
7410,
Q&A:
0
Gene expression is regulated through multiple steps at both transcriptional and post-transcriptional levels. The net abundance of mature mRNA species in cells is determined by the balance between transcription and degradation. Thus, the regulation of mRNA stability is a key post-transcriptional event that can greatly affect the net level of mRNAs ...
Cell Synchronization by Double Thymidine Block
Authors:
Guo Chen
and
Xingming Deng
,
date:
09/05/2018,
view:
14625,
Q&A:
1
Cell synchronization is widely used in studying mechanisms involves in regulation of cell cycle progression. Through synchronization, cells at distinct cell cycle stage could be obtained. Thymidine is a DNA synthesis inhibitor that can arrest cell at G1/S boundary, prior to DNA replication. Here, we present the protocol to synchronize cells at ...
Sulforhodamine B (SRB) Assay in Cell Culture to Investigate Cell Proliferation
Authors:
Esteban A. Orellana
and
Andrea L. Kasinski
,
date:
11/05/2016,
view:
32112,
Q&A:
0
The SRB assay has been used since its development in 1990 (Skehan
et al
., 1990) to inexpensively conduct various screening assays to investigate cytotoxicity in cell based studies (Vichai and Kirtikara, 2006). This method relies on the property of SRB, which binds stoichiometrically to proteins under mild acidic conditions and then can be ...
Superoxide Dismutase (SOD) and Catalase (CAT) Activity Assay Protocols for
Caenorhabditis elegans
Authors:
Jing Zhang
,
Rui Chen
,
Zhenyang Yu
and
Lili Xue
,
date:
08/20/2017,
view:
19168,
Q&A:
0
Assays for superoxide dismutase (SOD) and catalase (CAT) activities are widely employed to indicate antioxidant responses underlying the toxic effects of test chemicals. Yet, earlier studies mainly described the procedures as performed according to manufacturer’s instructions without modifications that are specific to any organisms. The present ...
An Optimized CTAB Method for Genomic DNA Extraction from Freshly-picked Pinnae of Fern,
Adiantum capillus-veneris
L.
Authors:
Yi Shu
,
Jin Wan-Ting
,
Yuan Ya-Ning
and
Fang Yu-Han
,
date:
07/05/2018,
view:
8107,
Q&A:
0
As the sister clade of seed plants, ferns are significant materials for plant phylogeny research. However, the genomic DNA extraction protocol for fern samples like modified CTAB method still lacks robustness. Here, we found that the amount and condition of the pinnae samples are critical for gDNA extraction in fern,
Adiantum capillus-veneris
...
Isolation of PBMCs Using Vacutainer
®
Cellular Preparation Tubes (CPT
TM
)
Authors:
Alaina Puleo
,
Chantia Carroll
,
Holden Maecker
and
Rohit Gupta
,
date:
01/20/2017,
view:
20380,
Q&A:
0
Peripheral blood mononuclear cell (PBMC) isolation is commonly done via density gradient centrifugation over Ficoll-Hypaque, a labor-intensive procedure that requires skilled technicians and can contribute to sample variability. Cellular Preparation Tubes (CPTs) are Vacutainer blood draw tubes that contain Ficoll-Hypaque and a gel plug that ...
Measurement of the Intracellular Calcium Concentration with Fura-2 AM Using a Fluorescence Plate Reader
Authors:
Magdiel Martínez
,
Namyr A. Martínez
and
Walter I. Silva
,
date:
07/20/2017,
view:
16030,
Q&A:
0
Intracellular calcium elevation triggers a wide range of cellular responses. Calcium responses can be affected or modulated by membrane receptors mutations, localization, exposure to agonists/antagonists, among others (Burgos
et al
., 2007; Martínez
et al
., 2016). Changes in intracellular calcium concentration can be measured ...
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