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AB23345

Anti-TBR2 / Eomes antibody

5

(39 Reviews)

|

(629 Publications)

Anti-TBR2 / Eomes antibody (ab23345) is a rabbit polyclonal antibody detecting TBR2 / Eomes in Western Blot, IHC-Fr. Suitable for Human, Mouse.

- Over 530 publications
- Trusted since 2006

View Alternative Names

Tbr2, Eomes, Eomesodermin homolog, T-box brain protein 2, T-brain-2, TBR-2

12 Images
Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)
  • IHC-Fr

PubMed

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)

Dlx2 and Tbr2 identify non overlapping progenitor lineages in the adult mouse SVZ (subventricular zone).

(A–B) Adult C57/BL6 mouse forebrain coronal sections at rostro-caudal point 1.2 relative to the bregma were immunostained for Dcx (red), Dlx2 or Tbr2 (green) and Ki67 (blue). Both progenitor populations show characteristics of migrating neuroblasts, as indicated by their Dcx expression (C–D). Adult Mash1 mouse forebrain coronal sections at rostro-caudal point 1.2 relative to the bregma were immunostained for Tbr2 (red) and Dlx2 (blue). Both Tbr2 and Dlx2 exhibited EGFP expression, but showed no colocalisation. Right side captions show cropped individual channels and the merges. Full panel insets are zoomed and cropped DAB stained photomicrographs of rostral periventricular sections for Tbr2 in the dorsal SVZ (A), Dlx2 in the dorso-lateral SVZ (B) and Mash1 in the ventro-lateral SVZ (C). Yellow arrows and arrowheads show respectively positive stained cell and low level TF staining. Dotted lines mark approximate boundaries of ventricular space. Flattened confocal z-stacks are of 14–15 μm thickness, including captions. Scale bars : 15 μm in full panels, 20 μm in captions and 25 μm in insets.

Image from Azim K et al., PLoS One. 2012;7(11):e49087. Fig 5.; doi: 10.1371/journal.pone.0049087. Reproduced under the Creative Commons license http://creativecommons.org/licenses/by/4.0/

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)
  • IHC-Fr

Lab

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)

Immunofluorescence staining of TRB2 staining in a mouse brain E14 frozen tissue section.

The section was fixed using 10% formaldehyde in 1X PBS for 10 minutes. No antigen retrieval step was performed prior to staining. Performed on a Leica BONDTM. The section was incubated at room temperature for 1 hour with ab23345 at 1/100 dilution. Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (ab150077) secondary antibody was used to detect the primary antibody (shown in green). Nuclear DNA was labelled with DAPI (shown in blue). The section was then mounted using Dako Fluorescence Mounting Medium®.

Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).

For other IHC staining systems (automated and non-automated), customers should optimize variable parameters such as antigen retrieval conditions, antibody concentrations and incubation times.

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)
  • IHC-Fr

AbReview14893****

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)

ab23345 staining TBR2 / Eomes in mouse embryonic brain tissue section by Immunohistochemistry (Frozen sections). Tissue samples were fixed with formaldehyde and blocking with 1% BSA and normal Goat serum for 30 minutes at RT. The sample was incubated with primary antibody (1/1000 in TBS + BSA 1%) for 10 hours at 40C. An Alexa Fluor® 555-conjugated Goat polyclonal to rabbit IgG was used as secondary antibody at 1/800 dilution.

This image is a courtesy of Anonymous Abreview

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)
  • IHC-Fr

Lab

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)

IHC image of TRB2 staining in a mouse brain E14 frozen tissue section. The section was pre-treated using pressure cooker heat mediated antigen retrieval with sodium citrate buffer (pH6). Non-specific protein-protein interactions were then blocked in TBS containing 0.2% (v/v) Triton X-100 for 1h at room temperature. The section was then incubated overnight at +4°C in TBS containing 0.05% (v/v) Triton X-100 and 1% (w/v) BSA with ab23345 at 1/100 dilution. Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (ab150077) secondary antibody was used to detect the primary antibody. The section was mounted with DPX.

For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)
  • IHC-Fr

AbReview8925****

Immunohistochemistry (Frozen sections) - Anti-TBR2 / Eomes antibody (AB23345)

ab23345 staining mouse developing cerebral cortex tissue sections by IHC-Fr. Sections were PFA fixed and permeabilized in TX-100 prior to blocking with 2.5% serum for 1 hour at RT. The primary antibody was diluted 1/500 and incubated with the sample for 18 hours. A biotinylated pig anti-rabbit IgG antibody, diluted 1/500, was used as the secondary.

This image is courtesy of an Abreview submitted by Dr Guillermo Estivill-Torrus

Western blot - Anti-TBR2 / Eomes antibody (AB23345)
  • WB

Lab

Western blot - Anti-TBR2 / Eomes antibody (AB23345)

Gel type : MOPS

Blocking buffer : 1% milk

All lanes:

Western blot - Anti-TBR2 / Eomes antibody (ab23345) at 1 µg/mL

Lane 1:

Human PTA-6967 Whole Cell Lysate at 20 µg

Lane 2:

E14 Mouse Embryo Brain Tissue Lysate at 40 µg

Secondary

All lanes:

Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/50000 dilution

Predicted band size: 72 kDa

Observed band size: 75 kDa,85 kDa

false

Exposure time: 12min

Western blot - Anti-TBR2 / Eomes antibody (AB23345)
  • WB

Lab

Western blot - Anti-TBR2 / Eomes antibody (AB23345)

This blot was produced using a 4-12% Bis-tris gel under the MOPS buffer system. The gel was run at 200V for 50 minutes before being transferred onto a Nitrocellulose membrane at 30V for 70 minutes. The membrane was then blocked for an hour using 3% Milk before being incubated with ab23345 overnight at 4°C. Antibody binding was detected using an anti-rabbit antibody conjugated to HRP, and visualised using ECL development solution ab133406.

Abcam recommends using milk as the blocking agent.

All lanes:

ab23345 at 1 mg/mL

All lanes:

Human ES Cells treated with Retinoic Acid (48h) at 20 µg

Secondary

All lanes:

Goat Anti-Rabbit IgG H&L (HRP) preadsorbed at 1/50000 dilution

Predicted band size: 72 kDa

Observed band size: 50 kDa,65 kDa,75 kDa,85 kDa

true

Exposure time: 20min

Western blot - Anti-TBR2 / Eomes antibody (AB23345)
  • WB

Ap

Western blot - Anti-TBR2 / Eomes antibody (AB23345)

This blot was produced using a 4-12% Bis-tris gel under the MOPS buffer system. The gel was run at 200V for 50 minutes before being transferred onto a Nitrocellulose membrane at 30V for 70 minutes. The membrane was then blocked for an hour using 3% Milk before being incubated with ab23345 overnight at 4°C. Antibody binding was detected using an anti-rabbit antibody conjugated to HRP, and visualised using ECL development solution ab133406.

Abcam recommends using milk as the blocking agent.

All lanes:

Western blot - Anti-TBR2 / Eomes antibody (ab23345) at 1 µg/mL

All lanes:

Human ES Cells treated with Retinoic Acid (24h) at 20 µg

Secondary

All lanes:

Goat Anti-Rabbit IgG H&L (HRP) preadsorbed at 1/50000 dilution

Predicted band size: 72 kDa

Observed band size: 75 kDa,85 kDa

true

Exposure time: 20min

Western blot - Anti-TBR2 / Eomes antibody (AB23345)
  • WB

AbReview15441****

Western blot - Anti-TBR2 / Eomes antibody (AB23345)

All lanes:

Western blot - Anti-TBR2 / Eomes antibody (ab23345) at 1/1000 dilution

All lanes:

Lysate prepared from mouse embryonic brain tissue at 20 µg

Secondary

All lanes:

HRP-conjugated goat polyclonal to rabbit IgG

Predicted band size: 72 kDa

Observed band size: 72 kDa

true

Exposure time: 5min

This image is a courtesy of Anonymous Abreview

Western blot - Anti-TBR2 / Eomes antibody (AB23345)
  • WB

Project

Western blot - Anti-TBR2 / Eomes antibody (AB23345)

All lanes:

Western blot - Anti-TBR2 / Eomes antibody (ab23345) at 1 µg/mL

Lane 1:

Human Mesendoderm (Day 2) Whole Cell Lysate at 20 µg

Lane 2:

Human Mesendoderm (Day 2) Whole Cell Lysate at 20 µg with Mouse TBR2 / Eomes peptide (<a href='/en-us/products/unavailable/mouse-tbr2-eomes-peptide-ab25698'>ab25698</a>)

Secondary

All lanes:

Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/3000 dilution

Predicted band size: 72 kDa

Observed band size: 74 kDa,85 kDa

false

Western blot - Anti-TBR2 / Eomes antibody (AB23345)
  • WB

AbReview4631****

Western blot - Anti-TBR2 / Eomes antibody (AB23345)

ab23345 detects a clear band of ~ 72 kDa in lysates from EL4 cells expressing V5 tagged Eomesodermin (lane 2). Lanes 1 and 3 contain lysates from EL4 cells expressing empty vector or V5 tag alone. Lanes 4-6 show the same lysates blotted with anti-V5 tag antibody. GAPDH was used as a loading control.

Lanes 1 - 3:

Western blot - Anti-TBR2 / Eomes antibody (ab23345) at 1/2000 dilution

Lanes 4 - 6:

V5 antibody

Lanes 1 and 4:

EL4 cells + empty vector

Lanes 2 and 5:

EL4 cells + vector expressing V5 tagged Eomesodermin

Lanes 3 and 6:

EL4 cells + V5 tagged vector

Secondary

All lanes:

Goat anti Rabbit at 1/2500 dilution

Predicted band size: 72 kDa

Observed band size: 72 kDa

false

This image was submitted as part of a review published on 9th May 2006

Western blot - Anti-TBR2 / Eomes antibody (AB23345)
  • WB

Project

Western blot - Anti-TBR2 / Eomes antibody (AB23345)

All lanes:

Western blot - Anti-TBR2 / Eomes antibody (ab23345) at 1 µg/mL

Lane 1:

Human Mesendoderm (Day 2) Whole Cell Lysate at 10 µg

Lane 2:

E14 Mouse Embryo Brain Tissue Lysate at 10 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-preadsorbed-ab97080'>ab97080</a>) at 1/5000 dilution

Predicted band size: 72 kDa

Observed band size: 75 kDa,85 kDa

false

Exposure time: 4min

Key facts

Host species

Rabbit

Clonality

Polyclonal

Isotype

IgG

Carrier free

No

Reacts with

Mouse, Human

Applications

IHC-Fr, WB

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Specificity

From Jan 2024, QC testing of replenishment batches of this polyclonal changed. All tested and expected application and reactive species combinations are still covered by our Abcam product promise. However, we no longer test all applications. For more information on a specific batch, please contact our Scientific Support who will be happy to help.

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "IHCFr" : {"fullname" : "Immunohistochemistry (Frozen sections)", "shortname":"IHC-Fr"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "0.4-2.5 µg/mL", "WB-species-notes": "<p>Abcam recommends using milk as the blocking agent.</p><p><em>In our hands, when tested in western blot, this product typically gives a weaker signal in mouse tissue lysates compared to human cell lines. However, this product gives clean, specific staining in IHC-Fr on mouse E14.5 cortex. Abcam welcomes customer feedback and would appreciate any comments regarding this product and the data presented.</em></p>", "IHCFr-species-checked": "guaranteed", "IHCFr-species-dilution-info": "", "IHCFr-species-notes": "" }, "Mouse": { "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "0.4-2.5 µg/mL", "WB-species-notes": "<p>Abcam recommends using milk as the blocking agent.</p><p><em>In our hands, when tested in western blot, this product typically gives a weaker signal in mouse tissue lysates compared to human cell lines. However, this product gives clean, specific staining in IHC-Fr on mouse E14.5 cortex. Abcam welcomes customer feedback and would appreciate any comments regarding this product and the data presented.</em></p>", "IHCFr-species-checked": "testedAndGuaranteed", "IHCFr-species-dilution-info": "1/100 - 1/500", "IHCFr-species-notes": "<p>Abcam recommends the following antigen retrieval method: Heated citrate solution (10mM citrate pH 6.0 + 0.05% Tween-20).</p><p>We recommend using Goat Anti-Rabbit IgG H&amp;L (Alexa Fluor<sup>®</sup> 488) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-alexa-fluor-488-ab150077'>ab150077</a>) secondary antibody.</p>" }, "Rat": { "WB-species-checked": "predicted", "WB-species-dilution-info": "", "WB-species-notes": "", "IHCFr-species-checked": "predicted", "IHCFr-species-dilution-info": "", "IHCFr-species-notes": "" }, "Common marmoset": { "WB-species-checked": "predicted", "WB-species-dilution-info": "", "WB-species-notes": "", "IHCFr-species-checked": "predicted", "IHCFr-species-dilution-info": "", "IHCFr-species-notes": "" }, "Cow": { "WB-species-checked": "predicted", "WB-species-dilution-info": "", "WB-species-notes": "", "IHCFr-species-checked": "predicted", "IHCFr-species-dilution-info": "", "IHCFr-species-notes": "" } } }

Product details

Tbr2 expression is observed in neuron progenitor compartments in development (the subventricular zone and ventricular zone) and expression rises and falls with cortical plate neurogenesis. Transition from radial glia to intermediate progenitor cell is associated with upregulation of Tbr2.

Product Specifications
Anti-TBR2 / Eomes antibody (ab23345) is a rabbit polyclonal antibody and is validated for use in IHC-Fr, WB in human, mouse samples.
Anti-TBR2 / Eomes antibody (ab23345) specifically detects TBR2 / Eomes (UniProt ID: O95936; Molecular weight: 73kDa) and is sold in 50 µg selling sizes.

Quality and Validation
Abcam's high quality validation processes ensure Anti-TBR2 / Eomes antibody (ab23345) has high sensitivity and specificity.
Anti-TBR2 / Eomes antibody (ab23345) has been cited over 530 times in peer reviewed journals and is trusted by the scientific community.
Anti-TBR2 / Eomes antibody (ab23345) has 37 independent reviews from customers.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Immunogen
Storage buffer
pH: 7.4 Preservative: 0.02% Sodium azide Constituents: PBS, 1% BSA
Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

TBR2 also known as Eomes or Eomesodermin is a transcription factor with a molecular mass of approximately 72 kDa. It is a member of the T-box family and is expressed predominantly in the developing central nervous system especially in the intermediate progenitor cells in the subventricular zone of the cortex. TBR2 plays a significant role in neurogenesis by regulating the proliferation and differentiation of neuronal progenitor cells. This regulation ensures proper development of specific neural circuits critical for overall brain function.
Biological function summary

TBR2 is important in controlling the transition of neural progenitors during cortical development. It serves as an important marker for intermediate neuronal precursors highlighting its importance in the progression from radial glia to neurons. TBR2 does not function in a complex but works closely with the transcription factor Neurogenin 2 to control neuronal differentiation. Its activity determines the timing of neuronal differentiation making it indispensable for orderly cortical layer formation.

Pathways

TBR2 is involved in the Wnt signaling and Notch signaling pathways both key regulators of neurodevelopment. In the Wnt pathway TBR2 influences the balance between progenitor cell proliferation and differentiation by interacting with proteins such as Beta-catenin. In the Notch signaling pathway TBR2 modulates neural precursor cell fate decisions often in relation with proteins like DLL1. These pathways ensure proper brain structure and function by coordinating neural progenitor activity.

TBR2 mutations or misregulation can lead to neurodevelopmental disorders such as microcephaly and intellectual disabilities. The protein's association with these conditions reflects its critical role in cortical development and neuronal differentiation. TBR2's dysregulation is often observed alongside the malfunction of its pathway partners like Beta-catenin in the development of such disorders illustrating the intricate interplay of genetic and molecular factors underlying these diseases.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Functions as a transcriptional activator playing a crucial role during development. Functions in trophoblast differentiation and later in gastrulation, regulating both mesoderm delamination and endoderm specification (PubMed : 10716450). Plays a role in brain development being required for the specification and the proliferation of the intermediate progenitor cells and their progeny in the cerebral cortex (PubMed : 18171685, PubMed : 18940588). Required for differentiation and migration of unipolar dendritic brush cells (PubMed : 33488348). Also involved in the differentiation of CD8+ T-cells during immune response regulating the expression of lytic effector genes (PubMed : 14605368).
See full target information Eomes

Publications (629)

Recent publications for all applications. Explore the full list and refine your search

eLife 13: PubMed40956303

2025

The ciliary kinesin KIF7 controls the development of the cerebral cortex by acting differentially on SHH signaling in dorsal and ventral forebrain.

Applications

Unspecified application

Species

Unspecified reactive species

María Pedraza,Valentina Grampa,Sophie Scotto-Lomassese,Julien Puech,Aude Muzerelle,Azka Mohammad,Sophie Lebon,Nicolas Renier,Christine Metin,Justine Masson

Cells 14: PubMed40940813

2025

Autism Spectrum Disorder Induced Pluripotent Stem Cells Display Dysregulated Calcium Signaling During Neural Differentiation.

Applications

Unspecified application

Species

Unspecified reactive species

Abdullah J AlShawaf,Sarah A AlNassar,Norah AlGhamdi,Cristiana Mattei,Shiang Y Lim,Mirella Dottori,Futwan A Al-Mohanna

International journal of molecular sciences 26: PubMed40869158

2025

Bi-Allelic Loss-of-Function Variant in MAN1B1 Cause Rafiq Syndrome and Developmental Delay.

Applications

Unspecified application

Species

Unspecified reactive species

Liyu Zang,Yaoling Han,Qiumeng Zhang,Si Luo,Zhengmao Hu,Kun Xia,Ashfaque Ahmed,Qi Tian

Genes & development 39:1338-1354 PubMed40774817

2025

Mouse cortical cellular diversification through lineage progression of radial glia.

Applications

Unspecified application

Species

Unspecified reactive species

Lin Yang,Ziwu Wang,Yanjing Gao,Zhenmeiyu Li,Guoping Liu,Zhejun Xu,Zhuangzhi Zhang,Yan You,Zhengang Yang,Xiaosu Li

Nature communications 16:6834 PubMed40707493

2025

DNMT1-mediated regulation of somatostatin-positive interneuron migration impacts cortical architecture and function.

Applications

Unspecified application

Species

Unspecified reactive species

Julia Reichard,Philip Wolff,Song Xie,Ke Zuo,Camila L Fullio,Jian Du,Severin Graff,Jenice Linde,Can Bora Yildiz,Georg Pitschelatow,Gerion Nabbefeld,Lilli Dorp,Johanna Vollmer,Linda Biemans,Shirley Kempf,Minali Singh,K Naga Mohan,Chao-Chung Kuo,Tanja Vogel,Paolo Carloni,Simon Musall,Geraldine Zimmer-Bensch

iScience 28:112569 PubMed40487428

2025

Impact of ATF6 deletion on the embryonic brain development.

Applications

Unspecified application

Species

Unspecified reactive species

Loc Dinh Nguyen,Ly Huong Nguyen,Dat Xuan Dao,Tsuyoshi Hattori,Mika Takarada-Iemata,Hiroshi Ishii,Takashi Tamatani,Hiroshi Kawasaki,Yohei Shinmyo,Kenta Onoue,Shigenobu Yonemura,Jun Zhang,Masato Miyake,Seiichi Oyadomari,Kazutoshi Mori,Osamu Hori

Nature communications 16:5079 PubMed40450029

2025

Eomesodermin in conjunction with the BAF complex promotes expansion and invasion of the trophectoderm lineage.

Applications

Unspecified application

Species

Unspecified reactive species

Alexandra Maria Bisia,Maria-Eleni Xypolita,Elizabeth K Bikoff,Elizabeth J Robertson,Ita Costello

Bioengineering & translational medicine 10:e10746 PubMed40385540

2025

Catalpol promotes the generation of cerebral organoids with oRGs through activation of STAT3 signaling.

Applications

Unspecified application

Species

Unspecified reactive species

Yoo-Jung Lee,Byounggook Cho,Daeyeol Kwon,Yunkyung Kim,Saemin An,Soi Kang,Jongpil Kim

Communications biology 8:663 PubMed40281197

2025

Stk24 deficiency causes disrupted hippocampal neurogenesis and anxiety-like behavior in mice.

Applications

Unspecified application

Species

Unspecified reactive species

Kuan-Yu Wu,Chi-Hui Tsao,Nicole Ching Su,Shin-Meng Deng,Guo-Jen Huang

Nature communications 16:2845 PubMed40122897

2025

Astrocyte-secreted cues promote neural maturation and augment activity in human forebrain organoids.

Applications

Unspecified application

Species

Unspecified reactive species

Honghui Zheng,Yilin Feng,Jiyuan Tang,Feifei Yu,Zitian Wang,Jiani Xu,Cheng Hai,Mingyue Jiang,Yifan Cheng,Zhicheng Shao,Ning Ma,Peter E Lobie,Shaohua Ma
View all publications

Product promise

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