Revision 1

#29650Store at -20C

1 Kit

(8 x 20 microliters)

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

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For Research Use Only. Not for Use in Diagnostic Procedures.
Product Includes Product # Quantity Mol. Wt Isotype/Source
GPX4 Antibody 52455 20 µl 20, 22 kDa Rabbit 
NCOA4 (E8H8Z) Rabbit mAb 66849 20 µl 80 kDa Rabbit IgG
KEAP1 (D6B12) Rabbit mAb 8047 20 µl 60-64 kDa Rabbit IgG
NRF2 (D1Z9C) XP® Rabbit mAb 12721 20 µl 97-100 kDa Rabbit IgG
4F2hc/SLC3A2 (D3F9D) XP® Rabbit mAb 47213 20 µl 75-120 kDa Rabbit IgG
FTH1 (D1D4) Rabbit mAb 4393 20 µl 21 kDa Rabbit IgG
xCT/SLC7A11 (D2M7A) Rabbit mAb 12691 20 µl 35 kDa Rabbit IgG
DMT1/SLC11A2 (D3V8G) Rabbit mAb 15083 20 µl 55, 70-100 kDa Rabbit IgG
Anti-rabbit IgG, HRP-linked Antibody 7074 100 µl Goat 

Please visit cellsignal.com for individual component applications, species cross-reactivity, dilutions, protocols, and additional product information.

Description

The Ferroptosis Antibody Sampler Kit provides an economical means of detecting proteins involved in ferroptosis. The kit includes enough antibodies to perform two western blot experiments with each primary antibody.

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibodies.

Background

Ferroptosis is an iron-dependent form of regulated cell death associated with an increase in lipid peroxides (reviewed in 1,2). Free divalent iron (Fe2+) can lead to spontaneous lipid peroxidation through a Fenton reaction. Ferroptosis is regulated by signaling pathways that control iron storage and oxidative stress. Iron homeostasis is controlled, in part, by ferritin, an iron storage protein consisting of a complex of heavy (FTH1) and light (FTL) chains. Levels of ferritin may be regulated by a selective autophagy process targeting ferritin, termed ferritinophagy. This pathway is mediated by nuclear receptor coactivator 4 (NCOA4), a selective cargo receptor for ferritin (3,4). The divalent metal transporter SLC11A2/DMT1/NRAMP2 regulates iron homeostasis through non-heme absorption in the intestine (5). The glutathione peroxidase pathway has been identified as a key antioxidant defense pathway triggering ferroptosis. The compound RSL3, which directly inhibits GPX4, was identified as an activator of ferroptosis (6). GPX4 converts GSH into oxidized glutathione (GSSH) and reduces cytotoxic lipid peroxides. The glutathione peroxidase pathway is further regulated by System Xc-, an amino acid antiporter consisting of a disulfide-linked heterodimer of SLC7A11/xCT and SLC3A2/4F2hc/CD98, and is inhibited by the ferroptosis inducer erastin (7). Regulation of genes involved in oxidative stress, including GPX4, are largely controlled by the transcription factor NRF2 and serves as a defense against ferroptosis (8). Under normal conditions, expression of NRF2 is inhibited through interaction with KEAP1, part of a ubiquitin E3 ligase complex that leads to NRF2 proteasomal degradation. Oxidative stress leads to conformational changes in KEAP1 that disrupts this interaction, resulting in stabilization of NRF2. This process is further regulated through the autophagy pathway in which the autophagy cargo receptor p62/SQSTM1 can competitively inhibit the KEAP1-NRF2 complex, leading to upregulation of NRF2.

  1. Cao, J.Y. and Dixon, S.J. (2016) Cell Mol Life Sci 73, 2195-209.
  2. Xie, Y. et al. (2016) Cell Death Differ 23, 369-79.
  3. Mancias, J.D. et al. (2014) Nature 509, 105-9.
  4. Dowdle, W.E. et al. (2014) Nat Cell Biol 16, 1069-79.
  5. Gunshin, H. et al. (1997) Nature 388, 482-8.
  6. Yang, W.S. et al. (2014) Cell 156, 317-31.
  7. Dixon, S.J. et al. (2014) Elife 3, e02523.
  8. Fan, Z. et al. (2017) Oncogenesis 6, e371.

Background References

    Trademarks and Patents

    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    XP is a registered trademark of Cell Signaling Technology, Inc.
    All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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    Revision 1
    #29650

    Ferroptosis Antibody Sampler Kit

    Ferroptosis Antibody Sampler Kit: Image 1 Expand Image
    Western blot analysis of extracts from Huh7 and Hep G2 cells using xCT/SLC7A11 (D2M7A) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 2 Expand Image
    Chromatin immunoprecipitations were performed with cross-linked chromatin from MEF cells treated with DEM (50 μM, 3 hr) and NRF2 (D1Z9C) XP® Rabbit mAb, using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. DNA Libraries were prepared using DNA Library Prep Kit for Illumina Systems (ChIP-seq, CUT&RUN) #56795. The figure shows binding across NQO1, a known target gene of NRF2 (see additional figure containing ChIP-qPCR data).
    Ferroptosis Antibody Sampler Kit: Image 3 Expand Image
    Western blot analysis of extracts from MEF wt and U-2 OS cells, untreated (-) or treated with MG-132 #2194 (10 μM, 10 hr; +), using NRF2 (D1Z9C) XP® Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 4 Expand Image
    Western blot analysis of extracts from SK-MEL-5 and SK-MEL-2 cells using DMT1/SLC11A2 (D3V8G) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 5 Expand Image
    Western blot analysis of extracts from HeLa and HT-29 cells using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 6 Expand Image
    Western blot analysis of extracts from various cell lines using 4F2hc/SLC3A2 (D3F9D) XP® Rabbit mAb (upper) and β-actin (D6A8) Rabbit mAb #8457 (lower).
    Ferroptosis Antibody Sampler Kit: Image 7 Expand Image
    Western blot analysis of extracts from various cell lines using GPX4 Antibody.
    Ferroptosis Antibody Sampler Kit: Image 8 Expand Image
    Western blot analysis of extracts from various cell lines using NCOA4 (E8H8Z) Rabbit mAb (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower). As expected, HT-1080 and OVCAR-4 cells are low for NCOA4 expression.
    Ferroptosis Antibody Sampler Kit: Image 9 Expand Image
    After the primary antibody is bound to the target protein, a complex with HRP-linked secondary antibody is formed. The LumiGLO® is added and emits light during enzyme catalyzed decomposition.
    Ferroptosis Antibody Sampler Kit: Image 10 Expand Image
    Western blot analysis of extracts from various cell lines using KEAP1 (D6B12) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 11 Expand Image
    Chromatin immunoprecipitations were performed with cross-linked chromatin from MEF cells treated with DEM (50 μM, 3 hr) and NRF2 (D1Z9C) XP® Rabbit mAb, using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. DNA Libraries were prepared using DNA Library Prep Kit for Illumina® (ChIP-seq, CUT&RUN) #56795. The figure shows binding across chromosome 8 (upper), including NQO1 (lower), a known target gene of NRF2 (see additional figure containing ChIP-qPCR data).
    Ferroptosis Antibody Sampler Kit: Image 12 Expand Image
    Immunoprecipitation of NRF2 from MEF wt cell extracts treated with MG-132 #2194 (10 μM, 10 hr) using Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (lane 2) or NRF2 (D1Z9C) XP® Rabbit mAb (lane 3). Lane 1 is 10% input. Western blot analysis was performed using NRF2 (D1Z9C) XP® Rabbit mAb (lane 3).
    Ferroptosis Antibody Sampler Kit: Image 13 Expand Image
    Western blot analysis of extracts from human SK-MEL-5 cells, untreated (-) or treated with PNGase F (+), using DMT1/SLC11A2 (D3V8G) Rabbit mAb (upper) and β-Actin (13E5) Rabbit mAb #4970 (lower).
    Ferroptosis Antibody Sampler Kit: Image 14 Expand Image
    Immunohistochemical analysis of paraffin-embedded human ductal breast carcinoma using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 15 Expand Image
    Immunohistochemical analysis of paraffin-embedded human breast carcinoma using 4F2hc/SLC3A2 (D3F9D) XP® Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 16 Expand Image
    Western blot analysis of extracts from mouse testis using GPX4 Antibody.
    Ferroptosis Antibody Sampler Kit: Image 17 Expand Image
    Immunoprecipitation of NCOA4 protein from HeLa cell extracts. Lane 1 is 10% input, lane 2 is Rabbit (DA1E) mAb IgG XP® Isotype Control #3900, and lane 3 is NCOA4 (E8H8Z) Rabbit mAb. Western blot analysis was performed using NCOA4 (E8H8Z) Rabbit mAb. Anti-rabbit IgG, HRP-linked Antibody #7074 was used as a secondary antibody.
    Ferroptosis Antibody Sampler Kit: Image 18 Expand Image
    Western blot analysis of extracts from OVCAR8 cells, transfected with 100 nM SignalSilence® Control siRNA (Unconjugated) #6568 (-), SignalSilence® KEAP1 siRNA I #5285 (+) or SignalSilence® KEAP1 siRNA II #5289 (+), using KEAP1 (D6B12) Rabbit mAb (upper) or α-Tubulin (11H10) Rabbit mAb #2125 (lower). The KEAP1 (D6B12) Rabbit mAb confirms silencing of KEAP1 expression, while the α-Tubulin (11H10) Rabbit mAb is used as a loading control.
    Ferroptosis Antibody Sampler Kit: Image 19 Expand Image
    Chromatin immunoprecipitations were performed with cross-linked chromatin from MEF NRF2 wild-type (left) and NRF2 knock-out (right) cells, both treated with DEM (50 μM, 3 hr), and NRF2 (D1Z9C) XP® Rabbit mAb or Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using mouse MafG intron 1 primers, SimpleChIP® Mouse NQO1 Promoter Primers #12635, and SimpleChIP® Mouse RPL30 Intron 2 Primers #7015. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.
    Ferroptosis Antibody Sampler Kit: Image 20 Expand Image
    Confocal immunofluorescent analysis of wild-type NRF2 MEF cells, untreated (left) or treated with MG-132 #2194 (10 μM, 8 hr; center), and NRF2 knock-out MEF cells treated with MG-132 #2194 (10 μM, 8 hr; right), using NRF2 (D1Z9C) XP® Rabbit mAb (green pseudocolor). Actin filaments were labeled with Alexa Fluor® 488 Phalloidin #8878 (red pseudocolor).
    Ferroptosis Antibody Sampler Kit: Image 21 Expand Image
    Immunoprecipitation of DMT1 from SK-MEL-5 cell extracts using Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (lane 2) or DMT1/SLC11A2 (D3V8G) Rabbit mAb (lane 3). Lane 1 is 10% input. Western blot analysis was performed using DMT1/SLC11A2 (D3V8G) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 22 Expand Image
    Immunohistochemical analysis of paraffin-embedded human prostate adenocarcinoma using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 23 Expand Image
    Immunohistochemical analysis of paraffin-embedded human colon carcinoma using 4F2hc/SLC3A2 (D3F9D) XP® Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 24 Expand Image
    Confocal immunofluorescent analysis of OVCAR8 cells using KEAP1 (D6B12) Rabbit mAb (green). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
    Ferroptosis Antibody Sampler Kit: Image 25 Expand Image
    Flow cytometric analysis of MEF wt cells, untreated (blue) or treated with MG-132 #2194 (10uM, 4 hrs; green) using NRF2 (D1Z9C) XP® Rabbit mAb (solid line) compared to concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed line). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.
    Ferroptosis Antibody Sampler Kit: Image 26 Expand Image
    Immunohistochemical analysis of paraffin-embedded human endometrioid adenocarcinoma using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 27 Expand Image
    Immunohistochemical analysis of paraffin-embedded human ovarian carcinoma using 4F2hc/SLC3A2 (D3F9D) XP® Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 28 Expand Image
    Immunohistochemical analysis of paraffin-embedded human prostate adenocarcinoma using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 29 Expand Image
    Immunohistochemical analysis of paraffin-embedded human non-small cell lung carcinoma using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 30 Expand Image
    Confocal immunofluorescent analysis of HeLa (left, high expressing) or SH-SY5Y (right, low expressing) cells using 4F2hc/SLC3A2 (D3F9D) XP® Rabbit mAb (green). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
    Ferroptosis Antibody Sampler Kit: Image 31 Expand Image
    Immunohistochemical analysis of paraffin-embedded normal human lung using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 32 Expand Image
    Flow cytometric analysis of SH-SY5Y cells (blue) and HeLa cells (green) using 4F2hc/SLC3A2 (D3F9D) XP® Rabbit mAb (solid lines) or a concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed lines). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.
    Ferroptosis Antibody Sampler Kit: Image 33 Expand Image
    Immunohistochemical analysis of paraffin-embedded normal mouse colon using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 34 Expand Image
    Immunohistochemical analysis of paraffin-embedded normal mouse liver using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 35 Expand Image
    Immunohistochemical analysis of paraffin-embedded normal mouse spleen using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 36 Expand Image
    Immunohistochemical analysis of paraffin-embedded normal mouse testis using FTH1 (D1D4) Rabbit mAb.
    Ferroptosis Antibody Sampler Kit: Image 37 Expand Image
    Immunohistochemical analysis of paraffin-embedded human hepatocellular carcinoma using FTH1 (D1D4) Rabbit mAb (left) compared to concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (right).
    Ferroptosis Antibody Sampler Kit: Image 38 Expand Image
    Immunohistochemical analysis of paraffin-embedded HeLa cell pellet (left, high-expressing) or HL-60 cell pellet (right, low-expressing) using FTH1 (D1D4) Rabbit mAb.