Revision 7
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, W-S, IHC-Bond, IHC-P, IF-F, IF-IC, FC-FP

REACTIVITY:

H M R

SENSITIVITY:

Endogenous

MW (kDa):

40

Source/Isotype:

Rabbit IgG

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000
Simple Western™ 1:10 - 1:50
IHC Leica Bond 1:200 - 1:800
Immunohistochemistry (Paraffin) 1:50 - 1:200
Immunofluorescence (Frozen) 1:50 - 1:200
Immunofluorescence (Immunocytochemistry) 1:50 - 1:200
Flow Cytometry (Fixed/Permeabilized) 1:50

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.

For a carrier free (BSA and azide free) version of this product see product #89872.

Specificity / Sensitivity

Arginase-1 (D4E3M) XP® Rabbit mAb recognizes endogenous levels of total arginase-1 protein. This antibody does not cross-react with arginase-2.

Species Reactivity:

Human, Mouse, Rat

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Val47 of human arginase-1 protein.

Background

L-arginine plays a critical role in regulating the immune system (1-3). In inflammation, cancer, and certain other pathological conditions, myeloid cell differentiation is inhibited leading to a heterogeneous population of immature myeloid cells, known as myeloid-derived suppressor cells (MDSCs). MDSCs are recruited to sites of cancer-associated inflammation and express high levels of arginase-1 (4). Arginase-1 catalyzes the final step of the urea cycle converting L-arginine to L-ornithine and urea (5). Thus, MDSCs increase the catabolism of L-arginine resulting in L-arginine depletion in the inflammatory microenvironment of cancer (4,6). The reduced availability of L-arginine suppresses T cell proliferation and function and thus contributes to tumor progression (4,6). Arginase-1 is of great interest to researchers looking for a therapeutic target to inhibit the function of MDSCs in the context of cancer immunotherapy (7). In addition, research studies have demonstrated that arginase-1 distinguishes primary hepatocellular carcinoma (HCC) from metastatic tumors in the liver, indicating its value as a potential biomarker in the diagnosis of HCC (8,9).

  1. Albina, J.E. et al. (1989) J Exp Med 169, 1021-9.
  2. Mills, C.D. (2001) Crit Rev Immunol 21, 399-425.
  3. Rodriguez, P.C. et al. (2004) Cancer Res 64, 5839-49.
  4. Gabrilovich, D.I. and Nagaraj, S. (2009) Nat Rev Immunol 9, 162-74.
  5. Wu, G. and Morris, S.M. (1998) Biochem J 336 (Pt 1), 1-17.
  6. Raber, P. et al. (2012) Immunol Invest 41, 614-34.
  7. Wesolowski, R. et al. (2013) J Immunother Cancer 1, 10.
  8. Sang, W. et al. (2015) Tumour Biol 36, 3881-6.
  9. Geramizadeh, B. and Seirfar, N. (2015) Hepat Mon 15, e30336.

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 nonfat dry milk, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting W-S: Simple Western™ IHC-Bond: IHC Leica Bond IHC-P: Immunohistochemistry (Paraffin) IF-F: Immunofluorescence (Frozen) IF-IC: Immunofluorescence (Immunocytochemistry) FC-FP: Flow Cytometry (Fixed/Permeabilized)

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.
SignalStain is a registered 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.

使用に関する制限

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Revision 7
#93668

Arginase-1 (D4E3M) XP® Rabbit mAb

Western Blotting Image 1: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Western blot analysis of extracts from mouse and rat liver using Arginase-1 (D4E3M) XP® Rabbit mAb.
Western Blotting Image 2: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Western blot analysis of extracts from mouse liver and mouse small intestine using Arginase-1 (D4E3M) XP® Rabbit mAb (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower).
Western Blotting Image 1: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Simple Western™ analysis of extracts (0.1 mg/mL) from mouse liver tissue using Arginase-1 (D4E3M) XP® Rabbit mAb #93668. The virtual lane view (left) shows the target band (as indicated) at 1:10 and 1:50 dilutions of primary antibody. The corresponding electropherogram view (right) plots chemiluminescence by molecular weight along the capillary at 1:10 (blue line) and 1:50 (green line) dilutions of primary antibody. This experiment was performed under reducing conditions on the Jess™ Simple Western instrument from ProteinSimple, a BioTechne brand, using the 12-230 kDa separation module.
Immunohistochemistry Image 1: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded human colon adenocarcinoma using Arginase-1 (D4E3M) XP® Rabbit mAb performed on the Leica® BOND Rx.
Immunohistochemistry Image 1: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded human hepatocellular carcinoma using Arginase-1 (D4E3M) XP® Rabbit mAb.
Immunohistochemistry Image 2: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded normal human liver using Arginase-1 (D4E3M) XP® Rabbit mAb.
Immunohistochemistry Image 3: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded human lung carcinoma using Arginase-1 (D4E3M) XP® Rabbit mAb.
Immunohistochemistry Image 4: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded mouse liver using Arginase-1 (D4E3M) XP® Rabbit mAb.
Immunofluorescence Image 1: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Confocal immunofluorescent analysis of mouse liver (positive; left) or small intestine (negative; right) using Arginase-1 (D4E3M) XP® Rabbit mAb (green). Blue pseudocolor = DRAQ5 #4084 (fluorescent DNA dye).
Immunofluorescence Image 1: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Confocal immunofluorescent analysis of mouse primary bone marrow-derived macrophages (BMDMs) using Arginase-1 (D4E3M) XP® Rabbit mAb (green). BMDMs were differentiated with M-CSF (20 ng/ml, 7 days) and activated with either IL-4/cAMP (20 ng/ml, 0.5 mM, 24 hours; left) or LPS/IFNγ (50 ng/ml, 20 ng/ml, 24 hours; right). Red = Propidium Iodide (PI)/RNase Staining Solution #4087.
Flow Cytometry Image 1: Arginase-1 (D4E3M™) XP® Rabbit mAb Expand Image
Flow cytometric analysis of human whole blood using Arginase-1 (D4E3M) 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. Analysis was performed on cells in the granulocyte gate.