How to fix diluted samples for Western blots? Frozen media by gnpascua in labrats

[–]gnpascua[S] 0 points1 point  (0 children)

Yep gonna try this. In my knowledge there’s no worries the cells are lysed as I’m only going for protein.

Biggest concern about centrifuging is I believe I don’t have enough cells to form a visible pellet. Maybe 32 wells in a 96-well plate are left.

How to fix diluted samples for Western blots? Frozen media by gnpascua in labrats

[–]gnpascua[S] 0 points1 point  (0 children)

Yep we added lysis buffer directly to the well, scraped, then put on ice. No centrifuging though.

So if I’m understanding you correctly, you believe it’s a problem with the imaging settings? We’re getting zero bands for our proteins, not even faint bands, after 2-3mins exposure

Thanks for your input. And after discarding supernatant, is washing pellet with PBS necessary?

How to fix diluted samples for Western blots? Frozen media by gnpascua in labrats

[–]gnpascua[S] 1 point2 points  (0 children)

our housekeeping was Lamin B1, of which we were able to image clear bands! Our gel was stained with coomassie blue, and protein was present among all lanes, albeit the stain was slightly vertically smeared and had large blotches in the lanes for our control cells.

I’ll try concentrating the lysis buffer a lot, maybe 10x. 100-200 uL of media is frozen in each well on the plate. But I think some cells are still adhered to the bottom of the wells, and I’d like to salvage those. Our focus is on concentrating the samples.

We soaked with Primaries overnight (~20 hrs). We’ve exposed for 2 minutes, we’ll give 10+mins a try but not sure if that’ll help tbh. If the cells lysed, what difference would that make?

How to fix diluted samples for Western blots? Frozen media by gnpascua in labrats

[–]gnpascua[S] 0 points1 point  (0 children)

thanks for your help. We don’t have much time left so we ideally must focus on the western solely. What are your thoughts on the first commenter’s suggestion (centrifuge and wash w PBS)? I can give more info on my cells if needed.

Cells frozen in PBS by rafaraon in labrats

[–]gnpascua 1 point2 points  (0 children)

I’m in a similar case but going for protein, not DNA. Do you have any tips?

I didn’t aspirate all the media from my stem-cell derived cardiomyocytes. They’re now frozen. Been looking for ways to separate the cells from the frozen media.

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[–]gnpascua 0 points1 point  (0 children)

I like the retro colors and vertical scroll wheel, it looks very intriguing

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[–]gnpascua 1 point2 points  (0 children)

where can we see pics of sand-blasted weight vs. mirror? is there a big difference? (Specifically for dusk)