Revision 3

#87182Store at -20C

Cell Signaling Technology

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

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IF-IC, FC-FP, ChIP, ChIP-seq

REACTIVITY:

H

SENSITIVITY:

Endogenous

MW (kDa):

18

Source/Isotype:

Rabbit IgG

UniProt ID:

#P25791

Entrez-Gene Id:

4005

Product Information

Product Usage Information

For optimal ChIP and ChIP-seq results, use 5 μL of antibody and 10 μg of chromatin (approximately 4 x 10^6 cells) per IP. This antibody has been validated using SimpleChIP® Enzymatic Chromatin IP Kits.

Application Dilution
Western Blotting 1:1000
Immunofluorescence (Immunocytochemistry) 1:1600 - 1:6400
Flow Cytometry (Fixed/Permeabilized) 1:400 - 1:1600
Chromatin IP 1:100
Chromatin IP-seq 1:100

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 antibody.

Specificity / Sensitivity

LMO2 (E8K6I) Rabbit mAb recognizes endogenous levels of total LMO2 protein. This antibody also recognizes a non-specific band of unknown origin at 78 kDa. Testing of LMO2 (E8K6I) Rabbit mAb with positive and negative models by Flow Cytometry and Immunofluorescence corroborated specificity of this antibody.

Species Reactivity:

Human

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the amino terminus of human LMO2 protein.

Background

LIM-domain-only protein 2 (LMO2) is a transcriptional regulator that was first identified as a proto-oncogene activated by chromosomal translocations in T-cell acute lymphocytic leukemia (T-ALL) (1). Since then, LMO2 has been found to be a master regulator essential for erythroid development, as evidenced by homozygous LMO2 knockouts resulting in embryonic lethality in mice (2). LMO2 is an intrinsically unstructured protein that does not bind DNA directly, but rather acts as a scaffolding protein that recruits various transcription factors via its tandem cysteine-rich LIM domains to form a multi-protein DNA binding complex (3,4). The LMO2 complex plays a major role in hematopoiesis and was originally shown to consist of the transcription factors TAL1, E47, and GATA-1 in erythroid lineage cells, but variations of this complex may contain alternate transcription factors including LYL1, TAL2, GATA-2, and GATA-3 (5-9). The LMO2 complex also requires interaction with LIM-domain binding protein 1 (LDB1), which is necessary for LMO2 protein stability (10-11). In addition to hematopoietic tissue, LMO2 is also expressed in embryonic brain tissue, where it associates with BEX2 and the transcription factor NSCL-2 (12). Aberrant LMO2 expression is observed in several types of hematopoietic cancers, including large diffuse B-cell lymphoma (DLBCL), B-cell acute leukemia, (B-ALL), acute myeloid leukemia (AML), and T-ALL (13-16). LMO2-mediated T-ALL is primarily caused by the translocation t(11;14)(p13;q11) with the TCRD/A gene from chromosome 14q11, or the t(7;11)(q35;p13) translocation involving TCRB from 7q35 (1). In addition to hematopoietic cancers, overexpression of LMO2 in prostate stromal cells also facilitates prostate cancer progression by inducing expression of Interleukin-11 (IL-11), which stimulates STAT3 signaling in these cells (17).

  1. Boehm, T. et al. (1991) Proc Natl Acad Sci U S A 88, 4367-71.
  2. Warren, A.J. et al. (1994) Cell 78, 45-57.
  3. Chambers, J. and Rabbitts, T.H. (2015) Open Biol 5, 150062.
  4. Lécuyer, E. et al. (2007) J Biol Chem 282, 33649-58.
  5. Valge-Archer, V.E. et al. (1994) Proc Natl Acad Sci U S A 91, 8617-21.
  6. Wadman, I. et al. (1994) EMBO J 13, 4831-9.
  7. Wadman, I.A. et al. (1997) EMBO J 16, 3145-57.
  8. Osada, H. et al. (1995) Proc Natl Acad Sci U S A 92, 9585-9.
  9. Ono, Y. et al. (1998) Mol Cell Biol 18, 6939-50.
  10. Agulnick, A.D. et al. (1996) Nature 384, 270-2.
  11. Layer, J.H. et al. (2016) Mol Cell Biol 36, 488-506.
  12. Han, C. et al. (2005) Nucleic Acids Res 33, 6555-65.
  13. Natkunam, Y. et al. (2007) Blood 109, 1636-42.
  14. de Boer, J. et al. (2011) Leukemia 25, 321-30.
  15. Atay, M.H. et al. (2013) Histopathology 63, 293-4.
  16. Patel, J.L. et al. (2014) Histopathology 64, 226-33.
  17. Jiang, C.Y. et al. (2016) Oncotarget 7, 26247-58.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting IF-IC: Immunofluorescence (Immunocytochemistry) FC-FP: Flow Cytometry (Fixed/Permeabilized) ChIP: Chromatin IP ChIP-seq: Chromatin IP-seq

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

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

使用に関する制限

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Revision 3
#87182

LMO2 (E8K6I) Rabbit mAb

Western Blotting Image 1: LMO2 (E8K6I) Rabbit mAb Expand Image
Western blot analysis of extracts from TF-1, SET-2, and K-562 cells using LMO2 (E8K6I) Rabbit mAb.
Western Blotting Image 2: LMO2 (E8K6I) Rabbit mAb Expand Image
Western blot analysis of extracts from various cell lines using LMO2 (E8K6I) Rabbit mAb (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower). As expected, A549 and Jurkat cells are negative for LMO2 expression.
Immunofluorescence Image 1: LMO2 (E8K6I) Rabbit mAb Expand Image
Confocal immunofluorescent analysis of SET-2 cells (left, positive) and A549 cells (right, negative) using LMO2 (E8K6I) Rabbit mAb (green). Actin filaments were labeled with DyLight 554 Phalloidin #13054 (red). Samples were mounted in ProLong® Gold Antifade Reagent with DAPI #8961 (blue).
Flow Cytometry Image 1: LMO2 (E8K6I) Rabbit mAb Expand Image
Flow cytometric analysis of Jurkat cells (blue, negative) and TF-1 cells (green, positive) using LMO2 (E8K6I) 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.

Chromatin Immunoprecipitation Image 1: LMO2 (E8K6I) Rabbit mAb Expand Image
Chromatin immunoprecipitations were performed with cross-linked chromatin from TF1 cells and LMO2 (E8K6I) Rabbit mAb, using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. DNA Library was prepared using DNA Library Prep Kit for Illumina Systems (ChIP-seq, CUT&RUN) #56795. The figure shows binding across LYL1 gene.
Chromatin Immunoprecipitation Image 2: LMO2 (E8K6I) Rabbit mAb Expand Image
Chromatin immunoprecipitations were performed with cross-linked chromatin from TF1 cells and LMO2 (E8K6I) Rabbit mAb, using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. DNA Library was prepared using DNA Library Prep Kit for Illumina Systems (ChIP-seq, CUT&RUN) #56795. The figures show binding across chromosome 19 (upper), including LYL1 gene (lower).
Chromatin Immunoprecipitation Image 3: LMO2 (E8K6I) Rabbit mAb Expand Image
Chromatin immunoprecipitations were performed with cross-linked chromatin from TF-1 cells and either LMO2 (E8K6I) Rabbit mAb or Normal Rabbit IgG #2729 using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. The enriched DNA was quantified by real-time PCR using SimpleChIP® Human GYPA Promoter Primers #31805 and SimpleChIP® Human α Satellite Repeat Primers #4486. 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.