What can control gene expression after irradiation (besides DNA methylation)?

I'm studying a gene whose expression is regulated by DNA methylation. Cancer cell lines that express this gene show strong hypomethylation, while cells lines that don't express it show...

19 March 2019 7,845 2 View

Hi - does anyone have any advice about retrieving PBMCs from their suspension in RNAlater?

The PBMCs were suspended in RNALter and then stored at -80oc. Now I want to retrieve the PBMCs and then extract the RNA (inc the microRNAs) - does anyone have advice about centrifuge speeds/...

19 June 2017 6,038 3 View

Molecular weight changes with GPI Anchors

I'm studying a GPI-anchored protein and all of the antibodies against this protein are ~5-7kD higher than the expected molecular weight (expected is ~18kD and most antibodies give ~25kD). I'm...

21 May 2017 1,323 5 View

Is there any protocol to isolate DNA from plant source without liquid nitrogen?

Is there any protocol to isolate DNA from plant source using CTAB method without liquid nitrogen?

21 September 2014 5,637 3 View

What is the role of arachidonic acid cascade in cancer?

How are the Arachidonate metabolites involved in carcinogenesis?

11 September 2014 7,635 7 View

How to prepare 2 units/ml alpha amylase solution?

I need to prepare a-amylase solution of concentration 2units/ml for an invitro a-amylase inhibition assay. The a-amylase container I have does not mention the concentration of the enzyme and is...

01 January 1970 536 4 View

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

What element is driving the different slop in the low frequency tail?

My study consists simple corrosion inhibitors in salty brine. Right now I just fit my circuit with randles with CPE. Just wondering how the slop can given more info of the experiment. Or any...

01 March 2021 6,474 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

Does RNAiMAX transfection reagent work in serum free medium?

I diluted siRNA and RNAiMAX in opti-MEM and added to the cells which they were in the growth medium. Is it a right way? or should I culture cells in the opti-MEM medium for a while and not in...

26 February 2021 10,041 3 View

Has anyone had luck using cell lines other than HEK 293 (such as COS1) to package lentivirus?

I am looking to package lentivirus in endothelial cells but I am opposed to using 293 cells due to personal ethics regarding the source. I have done some reading and saw that COS1, COS7, & CHO...

25 February 2021 3,030 1 View

Unknown debris sheets observed in cell culture flasks?

Hi, We culture neural progenitor cells in T175 culture flasks coated with PLO-Laminin. We have successfully grown these cells with our protocol for months. Recently, we observed large sheets...

25 February 2021 3,443 4 View

How do I transfect a large plasmid into PC12 cells with nerve growth factor (NGF) receptor?

I have a large 16 kb plasmid, which I need to transfect into PC12 cells. Lipofectamin 2000 didn't work and with GFP alone the transfection rate is very low. I also tried the neon invitrogen...

25 February 2021 6,635 5 View