General descriptionChromatin, the higher order structure of DNA, proteins and RNA, constitutes the majority of the nucleus of eukaryotic cells. Changes in chromatin structure are the essence of many essential nuclear processes, including transcription, meiosis, mitosis, and apoptosis. The nucleosome represents the primary building block of chromatin and it comprises an octomer of four core histone proteins (H2A, H2B, H3 and H4). HeLa cells expressing green fluorescent protein fused histone H2B (H2B-GFP) have been widely used to visualize the dynamics of chromosomal architecture in living cells during various processes. In addition to studying normal mitosis, histone H2B-GFP has been utilized for imaging the distinctive clustering behavior of double minute chromosomes (DMs) in cancer cells during mitosis, which contributes to their asymmetric distribution to daughter cells. Monitoring histone H2B-GFP also permits continuous analysis of chromosomal degradation during apoptosis.
ApplicationResearch Category
Apoptosis & Cancer
Epigenetics & Nuclear Function
Research Sub Category
Cell Cycle, DNA Replication & Repair
Chromatin Biology
Histones
Subject to local law, this product is intended to be sold for internal in vitro research use only subject to terms and conditions found here: www.sigmaaldrich.com/restrictedcelluse. This product may not be: re-engineered or copied; used to make derivatives, modifications or functional equivalents; used to obtain patents or other IP claiming use of the product; used to develop, test, or manufacturer a commercial product; used as a component in a commercial product; resold or licensed; used in any clinical applications or trials; or used in humans. A license or limited commercial use agreement is required for use by any for-profit entity, use in services, and use in sponsored academic research. For information regarding any such use, please contact
[email protected].
Biochem/physiol ActionsCancer Cells
Preparation NoteHistone H2B-GFP expressing HeLa Cell Line should be stored in liquid nitrogen. The cells can be cultured for at least 10 passages after initial thawing without significantly affecting the cell marker expression and functionality.
Analysis Note• Each vial contains ≥ 1X10⁶ viable cells.
• Cells are tested by PCR and are negative for HPV-16, HPV-18, Hepatitis A, B, C and HIV-1 & 2 viruses.
• Cells are negative for mycoplasma contamination.
• Each lot of cells are genotyped by STR analysis to verify the unique identity of the cell line.
DisclaimerRESEARCH USE ONLY. This product is regulated in France when intended to be used for scientific purposes, including for import and export activities (Article L 1211-1 paragraph 2 of the Public Health Code). The purchaser (i.e. enduser) is required to obtain an import authorization from the France Ministry of Research referred in the Article L1245-5-1 II. of Public Health Code. By ordering this product, you are confirming that you have obtained the proper import authorization.
