How do you isolate RNA from adipose tissue?
RNA isolation from adipose tissue was performed using TRI Reagent® method (MRC Inc., US) and miRNeasy method (Qiagen, Germany) and a combination of both (combined protocol). Around 100 mg of tissue were used to isolate total RNA with the three mentioned methods.
What are the methods of RNA extraction?
There are three major techniques extensively used for RNA extraction: organic extraction, such as phenol-Guanidine Isothiocyanate (GITC)-based solutions, silica-membrane based spin column technology, and paramagnetic particle technology.
How do you sterilize a mortar and pestle for RNA extraction?
Best way to sterilize mortar and pestle for RNA extraction is Autoclave them.
What is murine adipose tissue?
Adipose tissue is composed primarily of adipocytes but also contains pericytes, endothelial cells, monocytes, macrophages and pluripotent stem cells8. Adipose tissue is distributed throughout the body in distinct depots. The principal depots can be found subdermally, subcutaneously, intramuscularly, and viscerally10.
How are RNA extraction cells harvested?
Harvest cells: If growing in a monolayer, cells can be lysed directly in the plate or trypsinized and collected as a cell pellet prior to lysis. To lyse directly in cell culture plate: Determine approximate number of cells (75mm = 1 x 107). Completely aspirate cell culture media and continue with step 2 of protocol.
Why do we perform RNA extraction?
It can be used for tissue storage to stabilize and protect cellular RNA until it is processed. It is also used for storage of RNA after RNA isolation and purification. It is compatible with most RNA isolation procedures.
What buffers are used in RNA extraction?
Cell lysis buffer for RNA extraction is highly denaturing and is usually composed of phenol and guanidine isothiocyanate. RNase inhibitors are usually present in the lysis buffer, since RNases can be very resistant to denaturation and remain active.
How is RNA extraction different from DNA extraction?
The main difference between DNA and RNA extraction is that the pH level of DNA extraction is pH 8 whereas the pH level of RNA extraction is pH 4.7. DNA tends to denature and move to the organic phase at acidic pH. At alkaline pH, the RNA undergoes alkaline hydrolysis due to the presence of 2′ OH in the ribose sugar.
How Long Can RNA be stored at?
RNA may be stored in a number of ways. For short-term storage, RNase-free H2O ( with 0.1 mM EDTA) or TE buffer (10 mM Tris, 1mM EDTA) may be used. RNA is generally stable at -80° C for up to a year without degradation.
Can we autoclave mortar and pestle?
Normal autoclave cycles are suitable for the mortar and pestle, i.e., 121⁰C for 15 min. Dry heat sterilization can be done at 200⁰C for 2 hours.
What is the difference between brown and white adipocytes?
White adipocytes, or white fat cells, have a single lipid droplet, but brown adipocytes contain many small lipid droplets, and a high number of iron-containing mitochondria. It is this high iron content that gives brown fat its dark red to tan color.
What is the prominent function of adipose tissue?
Adipose tissue is derived from preadipocytes. Its main role is to store energy in the form of lipids, although it also cushions and insulates the body.
How Long Can RNA be stored in?
What is RNA extraction used for?
RNA extraction is the purification of RNA from biological samples. This procedure is complicated by the ubiquitous presence of ribonuclease enzymes in cells and tissues, which can rapidly degrade RNA.
How to isolate RNA from dissected adipose tissue?
The total RNA from dissected adipose tissue ranging from 10 to 100 mg was isolated using the RNeasy Mini and the RNeasy Lipid Tissue Kit, respectively. The RNA isolation with peqGOLD RNAPure was completed with samples up to 5000 mg. The obtained amounts of total RNA are given in Figure 2.
Does the rneasy lipid tissue kit work for RNA isolation?
If the samples of adipose tissue weighed between 10 mg and 90 mg, the isolation with the RNeasy Lipid Tissue Kit yielded significantly more RNA than when using the RNeasy Mini Kit and peqGOLD RNAPure, respectively.
Is guanidine isothiocyanate/phenol an appropriate RNA isolation method for adipose tissue samples?
The RNA isolation from adipose tissue samples under 50 mg with peqGOLD RNAPure resulted in undetectable RNA amounts (data not shown), whereas this standard guanidine isothiocyanate/phenol based method was appropriate for RNA isolation from adipose tissue samples more than 100 mg.
Why is RNA extraction from animal tissues important?
RNA extraction is a crucial step for monitoring gene expression. Poor RNA quality (including degradation and remaining impurities) can result in misleading results. Isolation of RNA from animal tissues with high lipid content can be challenging.