siRNA / miRNA gene silencing Human Min-6

Get tips on using GeneArt™ Site-Directed Mutagenesis System to perform Site Directed Mutagenesis (SDM) Human - Point mutation U2OS PCNA

Get tips on using GeneArt™ Site-Directed Mutagenesis System to perform Site Directed Mutagenesis (SDM) Human - Point mutation LNCaP RasGRP2

Get tips on using GeneArt™ Site-Directed Mutagenesis System to perform Site Directed Mutagenesis (SDM) Human - Point mutation HUVEC PLCγ1

Get tips on using GeneArt™ Site-Directed Mutagenesis System to perform Site Directed Mutagenesis (SDM) Human - Point mutation HeLa CCNE

Stem cells have the unique ability to self-renew or differentiate themselves into various cell types in response to appropriate signals. These cells are especially important for tissue repair, regeneration, replacement, or in the case of hematopoietic stem cells (HSCs) to differentiate into various myeloid populations. Appropriate signals refer to the growth factor supplements or cytokines that mediate differentiation of various stem cells into the required differentiated form. For instance, HSCs can be differentiated into dendritic cells (with IL-4 and GM-CSF), macrophages (with m-CSF) and MDSCs (with IL-6 and GM-CSF). Human pluripotent stem cells (hPSCs) and induced pluripotent stem cells (iPSCs) can be first cultured in neural differentiation media (GSK3𝛃-i, TGF𝛃-i, AMPK-i, hLIF) to form neural rosettes, which can be differentiated into neural or glial progenitors (finally differentiated into oligodendrocytes). Neural progenitors can be finally differentiated into glutaminergic (dibytyryl cAMP, ascorbic acid) and dopaminergic (SHH, FGF-8, BDNF, GDNF, TGF-𝛃3) neurons. Thus, it is important to first identify the self-renewing cell line: its source and its final differentiation state, followed by the supplements and cytokines required for the differentiation, and final use. Timelines are another thing that is considered. For instance, it takes 7-10 days to form neural rosettes from iPSCs and 3 days to differentiate neural progenitors to neurons. Finally, the stability for stem cell culture media varies. It is advised to make fresh media every time when differentiating HSCs to myeloid populations, whereas neural differentiation media may remain stable for two weeks when stored in dark between 2-8C.

DNA-protein interactions are studied by using ChIP. The basic steps in this technique are crosslinking, sonication, immunoprecipitation, and analysis of the immunoprecipitated DNA. During ChIP, if chromatin is under-fragmented or fragments are too large which can lead to the increased background and lower resolution. Shorter cross-linking times (5-10 min) and/or lower formaldehyde concentrations (<1%) may improve shearing efficiency. If Chromatin is over-fragmented, then optimize shearing conditions for each cell type to improve ChIP efficiency. Over-sonication of chromatin may disrupt chromatin integrity and denature antibody epitopes. If you do not see any product or very little product in the input PCR reactions, add 5–10 μg chromatin per IP.

Get tips on using GeneArt™ Site-Directed Mutagenesis System to perform Site Directed Mutagenesis (SDM) Human - Point mutation H1299 MAGI-1

Get tips on using GeneArt™ Site-Directed Mutagenesis System to perform Site Directed Mutagenesis (SDM) Human - Point mutation U-87MG AQP4

Get tips on using GeneArt™ Site-Directed Mutagenesis PLUS System to perform Site Directed Mutagenesis (SDM) Human - Point mutation A498 PIK3CB

Get tips on using GeneArt™ Site-Directed Mutagenesis System to perform Site Directed Mutagenesis (SDM) Human - Point mutation THP-1 IL-33