ChIP试剂盒(ab500)

Reviews (4)Q&A (46)References (83)
ChiP
  • ChIP - ChIP Kit (ab500)
  • ChIP - ChIP Kit (ab500)
  • ChIP - ChIP Kit (ab500)

Key features and details

  • Sample type: Adherent cells, Suspension cells

概述

  • 产品名称

    ChIP试剂盒
    参阅全部 ChIP Kit 试剂盒

  • 样品类型

    Adherent cells, Suspension cells

  • 产品概述

    ChIP kit ab500 provides a protocol and reagents for running ChIP assays including:
    - cell lysis and chromatin extraction
    - chromatin shearing and DNA fragment length analysis
    - immunoprecipitation and DNA purification


    DNA produced using the kit can be analyzed using qPCR.


    The kit has been validated for ChIP assays with mammalian samples.


    Chinese protocol available. See protocols section below.

  • 说明

    This kit uses Protein A sepharose beads for antibody pulldown. See table below for Protein A and Protein G binding affinities with antibodies from commonly used species. For other species of antibody, consult the table in the protocol booklet.

    Species raised in

    		 Isotype  Protein A binding affinity Protein G binding affinity
           
    Rabbit  All isotypes +++ ++
           
    Goat All isotypes - ++
           

     

     

    Mouse   

    		 IgG1  + +++ 
    IgG2a  +++ +++
    IgG2b  ++ ++ 
    IgG3  +  +
    IgM  Use anti-mouse IgM 

     

    ChIP assay products and guides

    Find more ChIP assay / chromatin immunoprecipitation resources and products, ChIP antibody products, and other ChIP assay kits and related reagents.

    Abcam has not and does not intend to apply for the REACH Authorisation of customers’ uses of products that contain European Authorisation list (Annex XIV) substances.
    It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.

  • 经测试应用

    适用于: ChIPmore details
    不适用于: ChIP-seq

性能

应用

The Abpromise guarantee

Abpromise™承诺保证使用ab500于以下的经测试应用

“应用说明”部分 下显示的仅为推荐的起始稀释度；实际最佳的稀释度/浓度应由使用者检定。

应用 Ab评论 说明
ChIP
Use at an assay dependent concentration.
说明
ChIP
Use at an assay dependent concentration.
应用说明
Is unsuitable for ChIP-seq.

图片

  • ChiP
    ChiPLi Q., PLoS One 8(9). Fig 2c. doi: 10.1371/journal.pone.0075470. Reproduced under the Creative Commons license http://creativecommons.org/licenses/by/4.0/

    Chromatin immunoprecipitation assay was performed to define the interaction of serum response factor (SRF) with the intragenic serum response element (SRE) regulatory motif in mouse using ab500 ChIP Kit.

  • ChIP - ChIP Kit (ab500)
    ChIP - ChIP Kit (ab500)

    Chromatin immunoprecipitation using ab500 ChIP Kit and Histone H3 (tri methyl K9) antibody (ab8898). Chromatin was prepared from HeLa cells using the Abcam ChIP kit protocol. Cells were fixed with formaldehyde for 10 min. ChIP was performed with 2 µg of ab8898 (blue). No antibody was added to the beads control (yellow). Immunoprecipitated DNA was quantified by real time PCR (Taqman approach for active/inactive loci, Sybr green approach for heterochromatic loci). Primers and probes are located in the first kb of transcribed region.

  • ChIP - ChIP Kit (ab500)
    ChIP - ChIP Kit (ab500)

    Chromatin immunoprecipitation using ab500 ChIP Kit and Histone H3 (tri methyl K4) antibody (ab12209). Chromatin was prepared from HeLa cells using the Abcam ChIP kit protocol. Cells were fixed with formaldehyde for 10 min. ChIP was performed with 5 µg of ab12209 (blue). No antibody was added to the beads control (yellow). Immunoprecipitated DNA was quantified by real time PCR (Taqman approach for active/inactive loci). Primers and probes are located in the first kb of the transcribed region.

  • ChIP - ChIP Kit (ab500)
    ChIP - ChIP Kit (ab500)

    Chromatin immunoprecipitation using ab500 ChIP Kit and Histone H3 antibody (ab1791). Chromatin was prepared from HeLa cells using the Abcam ChIP kit protocol. Cells were fixed with formaldehyde for 10 min. ChIP was performed with 2 µg of ab1791 (blue). No antibody was added to the beads control (yellow). Immunoprecipitated DNA was quantified by real time PCR (Taqman approach for active/inactive loci, Sybr green approach for heterochromatic loci). Primers and probes are located in the first kb of the transcribed region.

文献 (83)

发表研究结果有使用 ab500？请让我们知道，以便我们可以引用本数据表中的参考文章。

ab500 被引用在 83 文献中.

  • Zhou S  et al. Cannabinoid receptor type 2 promotes kidney fibrosis through orchestrating ß-catenin signaling. Kidney Int 99:364-381 (2021). PubMed: 33152447
  • Xiang Z  et al. MeCP2 epigenetically regulates alpha-smooth muscle actin in human lung fibroblasts. J Cell Biochem 121:3616-3625 (2020). PubMed: 32115750
  • Wang G  et al. An engineered oncolytic virus expressing PD-L1 inhibitors activates tumor neoantigen-specific T cell responses. Nat Commun 11:1395 (2020). PubMed: 32170083
  • Alam C  et al. Nuclear respiratory factor 1 (NRF-1) upregulates the expression and function of reduced folate carrier (RFC) at the blood-brain barrier. FASEB J 34:10516-10530 (2020). PubMed: 32543769
  • Pydi SP  et al. ß-arrestin-1 suppresses myogenic reprogramming of brown fat to maintain euglycemia. Sci Adv 6:eaba1733 (2020). PubMed: 32548266
View all Publications for this product

客户评价及客户问答

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Easy to use and worked well

 Good Excellent 5/5 (Ease of Use)
Abreviews
abreview image
The ab500 ChIP kit was easy to use and worked well for my ChIP assay. It would be better to provide more protease inhibitor, proteinase K and DNA purifying slurry as there was not enough left for 24 tests after the optimization.

Abcam user community

Verified customer

提交于 Jun 25 2021

ChiP assay in germline stem cells

 Good Excellent 5/5 (Ease of Use)
Abreviews
abreview image
Experiment was done in mouse germline stem cells. IP was done using Sirt1 antibody (mouse). Promoter target studied: RARE
Treatment: inhibitor

Very good kit to work with. Just follow the protocol.

Abcam user community

Verified customer

提交于 Jul 17 2019

ab500 ChIP, Runx2 binding to target promoters

 Excellent Good 4/5 (Ease of Use)
Abreviews
abreview image
Chromatin immunoprecipitation. ab500 ChIP Kit (abcam) was used according to the manufacturer’s instructions. Briefly, VSMCs were trypsinsed, centrifuged and then washed in ice-cold PBS. Cells were centrifuged again and then fixed in 1.1% Formaldehyde in PBS. Reactions were quenched with glycine and cells were washed in ice cold PBS before being lysed. Chromatin was sheared to approximately 500-1000 bp fragments using a sonicator at 4 °C. Chromatin was diluted and input chromatin was collected. Remaining chromatin was used for ChIP using 4 ug Runx2 (D130-3) as antibody of interest, 4 ug anti-histone H3 as a positive control and no antibody as a negative control. Antibodies were added for 12 hours at 4 °C and then Protein A sepharose beads were used to precipitate protein/DNA complexes. Cross-links were reversed by heating at 98 °C followed by Proteinase K addition and DNA purification. Samples were analysed by pPCR.

Abcam user community

Verified customer

提交于 Jun 04 2018

ChIP Assay in HeLa cells

 Good Average 3/5 (Ease of Use)
Abreviews
abreview image
Experimental set up:
HeLa cells treated with 1 µM Dexamethasone (Dex) for 6h.
IP was performed with 4.0 µg rabbit anti-GR antibody (H-300, Santa Cruz).

Recommendations for product and protocol optimization:
- Step A2
Spin cells for 5 min instead of 10 min at 500 g at 4°C (not RT) for saving time and to avoid aberrant DNA interactions that might occur if time between harvest and cross linking is too long.

- Step B8
Using a sonication device with a sounding rod with a total lysate volume of 100 uL (3 ChIP assays) is difficult to handle. As a consequence, you easily lose much sample by dispersion. Better incubate cell pellet in the indicated 100 uL buffer D/PI mix for 5 min on ice and add 1X ChIP buffer (containing PI) to a volume of 350 uL. After sonication, add 580 uL 1X ChIP buffer (incl. PI) to the lysate (step D2). From this step the total volume for each sample will be as indicated in the manual. Sonication of bigger sample volume will not compromise the outcome of your experiment!

- Step B11
Spin sonicated lysates for 10 min instead of 5 min at 14,000 g at 4°C.

General remark:
Switching temperatures from spinning to RT at step A2 and A3 does not change the experimental results. Better keep 4°C constantly.

Mr. Christian Marx

Verified customer

提交于 Jan 08 2014

Question

I have a question about the binding/elution condition of the DNA purification slurry provided in the ChIP kit (ab500). From reading the protocol, it is not clear to me what is the exactly the condition used to elute the DNA from the slurry. Could you please explain the principle of this DNA purification slurry to me? This is potentially important for some of our applications.

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Answer

DNA purification slurry is often used for DNA extraction. The extraction is set up under aqueous alkaline conditions. In this environment, the slurry has an increased affinity for heavy metal cations such as Ca2+, Mn2+, and Mg2+. Nuclear DNA and RNA remain in water solution above the slurry. One benefit of using the slurry extraction is that divalent heavy metals can introduce DNA damage at high temperature (e.g. 100oC) and removing the ions can diminish this concern. In addition, magnesium is necessary for nuclease activation and binding these ions inactivates the enzyme, therefore the DNA will be protected. Elution of DNA from the slurry is achieved through centrifugation in steps 11-13 of part E (DNA purification) in the protocol booklet.

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Question

Hello,

Thanks for the previous response, I was not able to salvage my protein but I appreciate the help.

I have another question I was hoping you could help me with. As I have mentioned before, I am using the ChIP kit ab500 to isolate the HIF-1alpha protein from some samples I have. My supervisor has asked me to modify this protocol to allow for a western blot to be preformed with the isolated protein rather than following through with the rtPCR as indicated in the protocol. I was in contact with abcam prior to starting this experiment, they told me they couldn't foresee any issues in altering the protocol for use in a western blot but they would not be able to tell me for sure. I decided to go ahead with my proposed protocol and have had many difficulties which I am trying to overcome.

One issue I have is that I need to remove the protein from the protein binding beads in order to run the sample through a gel used in the western blot protocol. To do this, I tried incubating the sample (protein, DNA, protein binding bead complex) in an SDS solution at 98C for 10minutes. This method appeared successful at releasing the samples from the beads but I have not obtained results in my experiments. I was wondering if this temperature is too high for the antibody used and if so, what size the free antibody would appear at on a western? I use antibody ab1 for this protocol. My thought is that this incubation temperature and time are too high and therefore the antibody disassociates from the complex and this is why I cannot detect my protein?

Also, I am questioning whether or not I was able to remove the beads completely from the sample prior to beginning the western blot. If I were to run the beads on the gel, do you know where abouts I would see the corresponding bands and since they too are heated in the incubation, would they degrade and therefore be seen on the gel in the western?

I have attached my experimental results. As you can see there are not many differences between the samples and negative results. I think the bands differing in the samples and negatives are free antibody that disassociated from the complex during the incubation I discussed above. I am having difficulties determining what all the bands are, and am hoping you might be able to help. Please let me know if you have any thoughts on what all the bands are.

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Answer

Thank you for your reply.

I will do my best to see if I can help you:

1 - When you analyze your results via PCR rather than western blotting, do you get the correct results (eg no signal in the negative control)? If you have not done this, then I would suggest you try it and make sure the kit is working as it should.

2 - I have attached the document you sent and I have marked what I think are the heavy and light chains of the antibody (50kDa & 25kDa, respectively). Also, I am not completely familiar with this kit, but is there supposed to be antibody in your negative controls?

3 - You do not need to heat your samples to 98C to strip the protein from the beads. Heating the sample to 65/70C for 5 minutes is usually enough.

4 - If you have not removed all of the beads from your sample then they are generally trapped at the top of the gel and do not migrate.

Please let me know if there is anything else I can help you with.

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Question

I would like to ask if the ChIP Kit is also useful for other cell cultures (i.e. Bacterial)



Looking forward to your reply!




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Answer


The use of ab500 ChIP kit has not been validated so far on bacteria.

The part of the protocol that may need some optimization is the chromatin preparation. Actually, lysis of bacteria is more complex than lysis of eukaryotic cells and may vary depending on the type of bacteria. An enzymatic treatment (for example a lyzozyme treatment) may be added to the protocol in order to help the cell lysis. You can find two publications in attachment for some guidelines to perform a lyzozyme treatment for bacteria lysis before ChIP.

It is also recommended to check the efficiency of the shearing on agarose gel before starting the immunoprecipitation to ensure that the starting material for the IP is of good quality.

So the best would be to test the addition of a lyzozyme treatment to the protocol and to perform a time course for the shearing to determine the optimal conditions. For the shearing time, it is always recommended to select the shorter timing resulting in a good shearing profile.

Since there is an antibody against Histone H3 is provided as a positive control with that kit and bacteria do not express this protein (Peter J. Rizzo (2003). http://www.nature.com/cr/journal/v13/n4/full/7290166a.html) some bacteria specific positive control might need to be established.

Publications:
Al-Bassam et al., 2014 PMID: 25101778 [PubMed]
Wang H. et al., 2012 PMID: 22194453 [PubMed]

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Question

What percentage of formaldehyde should be used?

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Answer

the concentration of formaldehyde needed for the kit is actually 1% but you could use any percentage below 4%. 1% is just what was used in our lab.

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Question

I am using your ab500 CHIP kit and I was wondering if there was anywhere in the protocol where there could be a stopping point.

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Answer

It is possible to freeze the sheared chromatin and resume the ChIP at a later time, but once the ChIP has started, it is not possible to stop.

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Question

In the protocol there are two steps for using DNA purifying slurry (1st: reverse cross-link to see whether the sonication worked 2nd: actual reverse cross-link). According to the protocol, I need to use 100 micro lt each time. That means 200 micro lt for each sample. There is 3 ml of slurry. So, I can do only 15 ChIP assays. However, the kit says that 25 assays can be performed with the kit. The math does not match really !!! Any suggestions? Thanks !

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Answer

The kit is for 24 assays. It is 100 µl per ChIP. With 3000 µl DNA purifying slurry, you can do 30 ChIPs. But you are correct, you have to also use 100 µl per INPUT. So with this kit, you can do 24 assays + 6 INPUT.

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