RIPA Lysate (Strong)

RIPA Lysis Buffer (RIPA Lysis Buffer) is a well-known and commonly used solution for efficient cell and tissue lysis. It provides excellent lysis effectiveness for both tissues and cells. There are different variations of RIPA formulations available, categorized into three types based on their lysis strength: strong, medium, and weak. The choice of formulation depends on the specific application.
This particular product is a strong 1×RIPA lysis buffer containing key ingredients such as 50 mm Tris-HCl (pH 7.4), 150 mm NaCl, Triton X-100, 1% sodium deoxycholic acid, 0.1% SDS, as well as inhibitors like sodium vanadate, sodium fluoride, EDTA, and aprotinin. These components together provide a potent and broad-spectrum inhibition of protein degradation during lysis. The protein samples obtained using this product are suitable for various experimental techniques, including protein immunoblot (Western Blot), precipitation (IP), and immune co-precipitation (such as Co-IP).
To determine the total protein concentration in the lysates obtained using this product, the enhanced BCA protein concentration determination kit can be used. However, due to the high concentration of detergent present in the lysis buffer, the Bradford method is not recommended for determining total protein concentration accurately.
It is worth noting that when using RIPA Lysis Buffer (Strong), it is advised to add 1.5 ml of BPMSF (100mM) to enhance its effectiveness.

Solution

A. Cultured cell samples
To prepare the cracking solution, first ensure that the RIPA solution is fully dissolved before mixing. Next, take an appropriate amount of pyrolysis solution and add PMSF with a molecular weight of 174.2g/mol a few minutes before use, so that the final concentration is 1mM. It's crucial to ensure that the content generated is based on the original text information but with a different structure and vocabulary to demonstrate the capabilities of the language model.
For adherent cells, the first step is to remove the culture medium and clean it with PBS, normal saline or serum-free culture medium. In case serum proteins do not interfere, this step can be skipped. Next, 150-250ul lysate is added to each well of the 6-well plate, and a few shots with a gun ensure complete contact between the lysate and cells. Typically, within 1-2 seconds of exposure to lysate, the cell will fragment. It is crucial to maintain a highly similar content by rearranging the above content and ensuring that the content produced is entirely based on the original information. Please note that it should not be in the form of a ChapGPT-generated dialogue.
Cell suspension is prepared by centrifugation and gentle scattering with fingers. The collected cells are then lysed by adding 150-250ul of lysate per well in a six-well plate. A flicking motion with the fingers ensures complete cell lysis without any noticeable precipitation. In case of a large cell count, it is advisable to divide them into tubes containing 500 to 1 million cells each for efficient lysis.
3. After full lysis, centrifugation was conducted at 10,000-14,000g for 3-5 minutes, and the supernatant was removed for subsequent PAGE, WB, immunoprecipitation and other experiments.
[Description of lysate dosage] : Usually, adding 150μl lysate to each well of 6-well plate is enough. If the cell density is very high, the dosage of lysate can be appropriately increased to 200μl or 250μl.
B. Tissue samples
1. Cut the tissue into small pieces and use the homogenizer for homogenization.
2. Fully dissolve the RIPA cracking solution, and then mix it.Take an appropriate amount of pyrolysis solution and add PMSF (molecular weight: 174.2g /mol) a few minutes before use, so that the final concentration is 1mM.
3. Add 150-250μl pyrolysis solution per 20mg of tissue.[Note: If cleavage is insufficient, dosage can be added appropriately. If high concentration protein sample is needed, dosage can be reduced appropriately.]
4. After full lysis, centrifugation was conducted at 10,000-14,000g for 3-5 minutes, and the supernatant was removed for subsequent PAGE, WB, immunoprecipitation and other experiments.
5. If the tissue sample itself is very small, it can be cut properly and directly added to the cracking liquid for cracking. The sample can be fully cracked through the high-strength whirlpool mixer, and then the same procedure can be used.The advantage of direct cracking is that it is more convenient and does not require the use of a homogenizer, but the disadvantage is that the cracking is not as sufficient as the use of a homogenizer.
[Note] : The cracking products of RIPA pyrolysis fluid often appear a small group of transparent gel, which is a normal phenomenon.The transparent gel is a complex containing genomic DNA, etc.The supernatant can be directly centrifuged for subsequent experiments without detecting proteins that bind closely to genomic DNA.If proteins that are particularly tightly bound to the genome need to be detected, the transparent gel can be broken up by ultrasonic treatment, and the supernatant can be extracted by centrifugation for subsequent experiments.For example, the detection of some common transcription factors, such as NF-kB and p53, can usually be detected without ultrasound treatment.

1. All steps of cracking samples should be carried out on ice or at 4° C.2. A small group of transparent gel often appears in the pyrolysis products of RIPA pyrolysis fluid, which is a normal phenomenon.The transparent adhesive isA complex containing genomic DNA, etc.Without detecting proteins that bind particularly tightly to genomic DNASupernatant was extracted by direct centrifugation for subsequent experiments.If you need to detect proteins that are particularly tightly bound to the genome, you canThe transparent gel was broken and dispersed by ultrasonic treatment, and then the supernatant was extracted by centrifugation for subsequent experiments.3. Different cells may need to add different amount of lytic fluid, which requires conditional screening according to specific conditions;4. If the cracking solution precipitates or precipitates, it can be incubated in 37° C water bath, and the precipitate or precipitates can be dissolved by oscillationDissolve, can be properly heated to help dissolve.5. For your own safety, please do a good job of protection before using the reagent, such as wearing experimental clothes and gloves.

Store at -20°C for 12 months

RIPA Lysis Buffer (Strong)