Jump to content

  • Log in with Facebook Log in with Twitter Log In with Google      Sign In   
  • Create Account

CMIRC

Member Since 01 May 2012
Offline Last Active Apr 30 2013 03:10 AM
-----

Posts I've Made

In Topic: Compound to Differentiate Monocytes

25 October 2012 - 05:20 AM

Hello

I have not worked with the cell line you are working with, but with THP1 monocytes I have previously got differentiation to macrophages within 3 days of incubation with 1uM PMA. Hope this is helpfull. Sorry if it does not answer your question.

In Topic: How to induce early apoptosis in cells without using chemicals or UV

08 October 2012 - 04:51 PM

View Postmadelingirly, on 02 September 2012 - 10:34 PM, said:

Could u check this method

A good positive control for apoptosis: Heat shock the cells. Incubate 1 minute @ 56°C followed by incubation @ 37°C
dependent on cell type. Usually 1 hour @ 37°C after shock is sufficient to induce 50% apoptosis for most cell lines

Thank you Very much for proposing this method. I tried it on K562 and HL60 cells as well as PC3M and I get apoptosis. I tried both 56°C and 60°C and 37°C incubation thereafter and 56°C gave me 50% apoptosis out of which about 40-45 % was in late apoptosis and remarkably 60°C gave me 90% apoptosis (late apoptosis). This is an amazing method. Thank you for proposing it. Thanks once again.

In Topic: How to induce early apoptosis in cells without using chemicals or UV

16 August 2012 - 03:59 AM

Thank you for the reply it is very informative.

This method is not common but has been published by several journals (google heat induced apoptosis). However the methodology is not explained in detail. The purpose of this method is to avoid any chemical intervention that would cause apoptosis and UV has a possibility of mutating the DNA and also I do not have the means of using UV in a more controlled manner to induce apoptosis. I have used chemical means in the past and they work brilliantly however my project requirement is to use heat.

The use of CD95 mAb sounds good. I will try to implement that as one of the treatments. However I still need to use hyperthermia as a method of inducing apoptosis.

I use the Guava (Millipore) Nexin reagent that has anexin 5 which binds to PS that is expressed on cells undergoing apoptosis. And I follow the instructions as per the manufacturer. However I never get early or late apoptosis its always either dead or viable cells. Hence I would appreciate any help from anyone who has experience before or current on this topic.

Also Mettaler Scientist you mentioned you have used UV before. Could you please elaborate as to which cells and how long was the exposure and also did you get early or late apoptosis?

Hope to hear form you soon or anyone

CMIRC

In Topic: Understanding Cell Passaging

01 August 2012 - 07:54 AM

Dear Bob1

I would like to say thank you for your brilliant informative reply. I will keep your words of wisdom in mind when culturing.

Just one more question,

When you buy a cell line from a company and when you thaw to culture it for the first time at what passage do you freeze them for future use and how many vials do you make of them.

Home - About - Terms of Service - Privacy - Contact Us

©1999-2012 Protocol Online, All rights reserved.