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HIF-1 alpha Antibody - BSA Free

Images

 
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - Analysis of HIF-1 alpha in human retinal and choroidal primary endothelia cells exposed to hypoxic conditions in the times noted using NB100-134. Image from ...read more
Immunocytochemistry/ Immunofluorescence: HIF-1 alpha Antibody - BSA Free [NB100-134] - Hif1alpha expression in neonatal and adult ovary. Section of P5 ovary showing MVH expression in all oocytes and Hif1alpha expression ...read more
Immunohistochemistry-Paraffin: HIF-1 alpha Antibody - BSA Free [NB100-134] - Analysis of HIF-1 alpha in zebrafish retina tissue using NB100-134 HIF-1 alpha antibody. Mouse tissue was used as a control. Image from ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - Analysis of HIF-1 alpha in overexpression and endogenous HIF-1 alpha & HIF-2 alpha using anti-HIF-1 alpha antibody NB100-134. The data showed that HIF-1 alpha ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - Analysis of HIF-1 alpha using NB100-134, on normoxic and hypoxic nuclear rat cell lysates.
Biological Strategies: Immunocytochemistry/ Immunofluorescence: HIF-1 alpha Antibody - BSA Free [NB100-134] - Representative images of macrophages and activated macrophages, in the absence or presence of 10 uM ...read more
Immunocytochemistry/ Immunofluorescence: HIF-1 alpha Antibody - BSA Free [NB100-134] - Analysis of HIF-1 alpha in Normoxic (N) and Hypoxic (H) ARPE-19 cells using anti-HIF-1 alpha antibody NB100-134. Image from verified ...read more
Immunocytochemistry/ Immunofluorescence: HIF-1 alpha Antibody - BSA Free [NB100-134] - Hif1alpha expression in 9.5dpc primordial germ cells. Whole-mount staining of Hif1alpha and GFP in Oct4-GFP embryo (lateral view). ...read more
Immunohistochemistry-Paraffin: HIF-1 alpha Antibody - BSA Free [NB100-134] - Staining in the canine CL on days 10 to 70 after ovulation. PC = positive control (human placenta). NC = negative control. Image from verified ...read more
Immunohistochemistry: HIF-1 alpha Antibody - BSA Free [NB100-134] - Staining of human kidney, renal tubular epithelium in cortex using NB100-134.
Immunohistochemistry-Paraffin: HIF-1 alpha Antibody - BSA Free [NB100-134] - Analysis of FFPE tissue section of human endometrium carcinoma AN3CA cell line based xenograft using rabbit polyclonal HIF-1 alpha antibody ...read more
Simple Western: HIF-1 alpha Antibody - BSA Free [NB100-134] - Image shows a specific band for HIF-1 alpha in 0.2 mg/mL of Hypoxic HeLa lysate. This experiment was performed under reducing conditions using the 12-230 ...read more
Immunoprecipitation: HIF-1 alpha Antibody - BSA Free [NB100-134] - PC-3 cell lysates run with cobalt chloride treatments. Immunoprecipitation was performed with protein A/G agarose beads. This data was provided courtesy ...read more
Dual RNAscope ISH-IHC: HIF-1 alpha Antibody - BSA Free [NB100-134] - Formalin-fixed paraffin-embedded tissue sections of human kidney were probed for HIF-1 alpha mRNA (ACD RNAScope Probe, catalog #605228; Fast Red ...read more
Simple Western: HIF-1 alpha Antibody - BSA Free [NB100-134] - Simple Western lane view shows lysates of MCF +/- DMOG, BioSpherix MSCs in hypoxic conditions, and BioSpherix MSCs in normoxic conditions loaded at 0.5 ...read more
P53 was increased response to IR in the fetal brain.Even though no significant change in protein level, total p53 and phosphorylation of P53 at ser15 were increased compared with HIF-1 alpha in fetal brains response to ...read more
WNT11 is induced by hypoxia or hypoxic mimetics in different cell types.(A) Increased Wnt11 mRNA in EMSC adipocytes (Day 12) after hypoxia-mimetic treatments. EMSC adipocytes were treated with CoCl2 (0.1 mM), DFO ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - IGFBP5 inhibits HIF1 alpha expression through the MAPK-ERK signaling pathwayA. & B. Western blots using specific antibodies for the phosphorylation state of ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - WNT11 regulates MMPs activities.(A–C) (Top panels): Serum-free medium was conditioned for 24 hrs by the indicated cells, concentrated 20-fold & assayed by ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - ER-INP binds to PHD2, inhibits hydroxylation of HIF-1 alpha & increases HIF-1 alpha accumulation. (A) Co-immunoprecipitation assay. HEK293 cells were ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - HIF-1 alpha binds to TIM-3 promoter & regulates its expression in primary glia.(a) Cell surface expression of TIM-3 analysed in BV2 cells under 20% O2 or 1% ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - Regulation of catabolic genes by HIF-1 alpha . (A) Protein levels of Hif1a, & mRNA levels of Mmp13, & Hif2a in WT mouse primary chondrocytes transduced with ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - NSCs Reduce Succinate Levels & Reprogram the Metabolism of Type 1 Pro-inflammatory Mφ toward Oxidative Phosphorylation In Vitro(A) Experimental setup for ...read more
Western Blot: HIF-1 alpha Antibody - BSA Free [NB100-134] - Enhanced expression of hypoxia-induced survival factors & angiogenic growth factors in hASC L-spheroids.(A) The light source used was LED (660 nm) designed to ...read more

Product Details

Summary
Reactivity Hu, Mu, Rt, Bv, Ca, Gp, Pm, Xp, ZeSpecies Glossary
Applications WB, Simple Western, ELISA, GS, ICC/IF, IHC, IP, WB, ChIP, Dual ISH-IHC, KO
Clonality
Polyclonal
Host
Rabbit
Conjugate
Unconjugated
Format
BSA Free
Concentration
1.0 mg/ml
Validated by:
   

Biological Strategies

     

Order Details

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HIF-1 alpha Antibody - BSA Free Summary

Immunogen
This HIF-1 alpha Antibody was developed against a fusion protein made to an internal sequence of human HIF-1 alpha (containing amino acids 432 - 528) [Uniprot# Q16665].
Localization
Nucleus
Isotype
IgG
Clonality
Polyclonal
Host
Rabbit
Gene
HIF1A
Purity
Immunogen affinity purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Chromatin Immunoprecipitation (ChIP)
  • Chromatin Immunoprecipitation Sequencing reported in scientific literature (PMID 34277635)
  • Dual RNAscope ISH-IHC
  • ELISA
  • Gel Super Shift Assays 1:1 - 1:100
  • Immunoblotting
  • Immunocytochemistry/ Immunofluorescence
  • Immunohistochemistry 1:100 - 1:500
  • Immunohistochemistry-Frozen 1:100 - 1:500
  • Immunohistochemistry-Paraffin 1:100 - 1:500
  • Immunoprecipitation 1:1000
  • Knockout Validated
  • Simple Western 1:100
  • Western Blot 1:500 - 1:1000
Theoretical MW
93 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Control
COS-7 Nuclear Hypoxic Induced Cell Lysate
Human Placenta Whole Tissue Lysate (Adult Whole Normal)
HeLa CoCl2 treated/Untreated Cell Lysate
HepG2 CoCl2 treated/Untreated Cell Lysate
HeLa Hypoxic / Normoxic Cell Lysate
HepG2 Hypoxic / Normoxic Cell Lysate
HIF-1 alpha Knockout CoCl2-treated/untreated HeLa Cell Lysate
HIF-1 alpha Knockout Hypoxic-treated/untreated HeLa Cell Lysate
NIH 3T3 CoCl2 treated/Untreated Cell Lysate
L929 CoCl2 treated/Untreated Cell Lysate
Raw 264.7 CoCl2 treated/Untreated Cell Lysate
PC12 CoCl2 treated/Untreated Cell Lysate
PC12 Hypoxic / Normoxic Cell Lysate
Raw 264.7 Hypoxic / Normoxic Cell Lysate
L929 Hypoxic / Normoxic Cell Lysate
NIH 3T3 Hypoxic / Normoxic Cell Lysate
Reviewed Applications
Read 14 Reviews rated 4.8
using
NB100-134 in the following applications:

Publications
Read Publications using
NB100-134 in the following applications:

Reactivity Notes

Use in Human reported in scientific literature (PMID:33654095).

Packaging, Storage & Formulations

Storage
Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
Buffer
PBS
Preservative
0.02% Sodium Azide
Concentration
1.0 mg/ml
Purity
Immunogen affinity purified

Alternate Names for HIF-1 alpha Antibody - BSA Free

  • AINT
  • anti-HIF-1 alpha
  • anti-HIF1A
  • ARNT interacting protein
  • ARNT-interacting protein
  • Basic-helix-loop-helix-PAS protein MOP1
  • BHLHE78
  • Class E basic helix-loop-helix protein 78
  • HIF 1A
  • HIF1 alpha
  • HIF-1 alpha
  • HIF1
  • HIF1A
  • HIF-1a
  • HIF-1alpha
  • HIF-1-alpha
  • HIF1-alpha
  • hypoxia inducible factor 1 alpha subunit, hypoxia inducible factor 1 subunit alpha
  • hypoxia inducible factor 1, alpha subunit (basic helix-loop-helix transcription factor)
  • hypoxia-inducible factor 1-alpha
  • Member of PAS protein 1
  • member of PAS superfamily 1
  • MOP1
  • PAS domain-containing protein 8
  • PASD8

Background

Hypoxia contributes to the pathophysiology of human disease, including myocardial and cerebral ischemia, cancer, pulmonary hypertension, congenital heart disease and chronic obstructive pulmonary disease (1). In cancer and particularly solid tumors, hypoxia plays a critical role in the regulation of genes involved in stem cell renewal, epithelial to mesenchymal transition (EMT), metastasis and angiogenesis. In the tumor microenvironment (TME), hypoxia influences the properties and function of stromal cells (e.g., fibroblasts, endothelial and immune cells) and is a strong determinant of tumor progression (2,3).

HIF-1 or hypoxia inducible factor 1 (predicted molecular weight 93kDa), is a transcription factor commonly referred to as a "master regulator of the hypoxic response" for its central role in the regulation of cellular adaptations to hypoxia. In its active form under hypoxic conditions, HIF-1 is stabilized by the formation of a heterodimer of HIF-1 alpha and ARNT/HIF-1 beta subunits. Nuclear HIF-1 engages p300/CBP for binding to hypoxic response elements (HREs). This process induces transcription and regulation of genes including EPO, VEGF, iNOS2, ANGPT1 and OCT4 (4,5).

Under normoxic conditions, the HIF-1 alpha subunit is rapidly targeted and degraded by the ubiquitin proteasome system. This process is mediated by prolyl hydroxylase domain enzymes (PHDs), which catalyze the hydroxylation of key proline residues (Pro-402 and Pro-564) within the oxygen-dependent degradation domain of HIF-1 alpha. Once hydroxylated, HIF-1 alpha binds the von Hippel-Lindau tumor suppressor protein (pVHL) for subsequent ubiquitination and proteasomal degradation (4). pVHL dependent regulation of HIF-1 alpha plays a role in normal physiology and disease states. Regulation of HIF-1 alpha by pVHL is critical for the suppressive function of FoxP3+ regulatory Tcells (6). Repression of pVHL expression in chronic lymphocytic leukemia (CLL) B cells leads to HIF-1 alpha stabilization and increased VEGF secretion (7).

References

1. Semenza, G. L., Agani, F., Feldser, D., Iyer, N., Kotch, L., Laughner, E., & Yu, A. (2000). Hypoxia, HIF-1, and the pathophysiology of common human diseases. Advances in Experimental Medicine and Biology.

2. Muz, B., de la Puente, P., Azab, F., & Azab, A. K. (2015). The role of hypoxia in cancer progression, angiogenesis, metastasis, and resistance to therapy. Hypoxia. https://doi.org/10.2147/hp.s93413

3. Huang, Y., Lin, D., & Taniguchi, C. M. (2017). Hypoxia inducible factor (HIF) in the tumor microenvironment: friend or foe? Science China Life Sciences. https://doi.org/10.1007/s11427-017-9178-y

4. Koyasu, S., Kobayashi, M., Goto, Y., Hiraoka, M., & Harada, H. (2018). Regulatory mechanisms of hypoxia-inducible factor 1 activity: Two decades of knowledge. Cancer Science. https://doi.org/10.1111/cas.13483

5. Dengler, V. L., Galbraith, M. D., & Espinosa, J. M. (2014). Transcriptional regulation by hypoxia inducible factors. Critical Reviews in Biochemistry and Molecular Biology. https://doi.org/10.3109/10409238.2013.838205

6. Lee, J. H., Elly, C., Park, Y., & Liu, Y. C. (2015). E3Ubiquitin Ligase VHL Regulates Hypoxia-Inducible Factor-1 alpha to Maintain Regulatory T Cell Stability and Suppressive Capacity. Immunity. https://doi.org/10.1016/j.immuni.2015.05.016

7. Ghosh, A. K., Shanafelt, T. D., Cimmino, A., Taccioli, C., Volinia, S., Liu, C. G., ... Kay, N. E. (2009). Aberrant regulation of pVHL levels by microRNA promotes the HIF/VEGF axis in CLL B cells. Blood. https://doi.org/10.1182/blood-2008-10-185686

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Publications for HIF-1 alpha Antibody (NB100-134)(227)

We have publications tested in 8 confirmed species: Human, Mouse, Rat, Bovine, Canine, Chinese Hamster, Xenopus, Zebrafish.

We have publications tested in 18 applications: Block/Neutralize, ChIP, Chemotaxis, Chip Cytometry, ICC/IF, IF/IHC, IHC-Fr, IHC-P, IP, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin, Immunoprecipitation, In vivo assay, Simple Western, WB, Western Blot.


Filter By Application
Block/Neutralize
(2)
ChIP
(3)
Chemotaxis
(44)
Chip Cytometry
(1)
ICC/IF
(14)
IF/IHC
(23)
IHC-Fr
(5)
IHC-P
(13)
IP
(7)
Immunocytochemistry/ Immunofluorescence
(1)
Immunohistochemistry
(1)
Immunohistochemistry-Frozen
(1)
Immunohistochemistry-Paraffin
(1)
Immunoprecipitation
(1)
In vivo assay
(1)
Simple Western
(1)
WB
(97)
Western Blot
(7)
All Applications
Filter By Species
Human
(95)
Mouse
(50)
Rat
(16)
Bovine
(1)
Canine
(2)
Chinese Hamster
(1)
Xenopus
(1)
Zebrafish
(4)
All Species
Showing Publications 1 - 10 of 227. Show All 227 Publications.
Publications using NB100-134 Applications Species
Ashutosh Singh, Donghang Cheng, Jyothishmathi Swaminathan, Yanwen Yang, Yan Zheng, Nancy Gordon, Vidya Gopalakrishnan REST-dependent downregulation of von Hippel-Lindau tumor suppressor promotes autophagy in SHH-medulloblastoma Scientific Reports 2024-06-12 [PMID: 38866867]
Nicole Verhaar, Anna Marei Grages, Fay J Sauer, Tobias Geiger, Wencke Reineking, Marion Hewicker-Trautwein, Florian Geburek, Sabine B R Kästner Measuring tissue oxygen saturation in the orad intestinal segment during equine colic surgery may aid in predicting the occurrence of postoperative ileus. American journal of veterinary research 2024-04-19 [PMID: 38626792]
Liao Q, Deng H, Wang Z et al. Deletion of prolyl hydroxylase domain-containing enzyme 3 (phd3) in zebrafish facilitates hypoxia tolerance Journal of Biological Chemistry 2023-11-01 [PMID: 37923141]
Do TC, Lau JW, Sun C et al. Hypoxia deactivates epigenetic feedbacks via enzyme-derived clicking proteolysis-targeting chimeras Science advances 2022-12-14 [PMID: 36516252] (WB, Zebrafish)

Details:
Dilution used in WB 1:1000
WB Zebrafish
Oyama Y, Bartman CM, Bonney S et al. Circadian light-mediated endothelial metabolic reprogramming bioRxiv (Chemotaxis, Mouse) Chemotaxis Mouse
David A. Murphy, Daniela Osteicochea, Aidan Atkins, Caitlin Sannes, Zachary McClarnon, Isaac M. Adjei Optimizing Oxygen-Production Kinetics of Manganese Dioxide Nanoparticles Improves Hypoxia Reversal and Survival in Mice with Bone Metastases Molecular Pharmaceutics 2024-02-16 [PMID: 38365202]
Mücke, MM;El Bali, N;Schwarzkopf, KM;Uschner, FE;Kraus, N;Eberle, L;Mücke, VT;Bein, J;Beyer, S;Wild, PJ;Schierwagen, R;Klein, S;Zeuzem, S;Welsch, C;Trebicka, J;Brieger, A; The Role of Hypoxia-Inducible Factor 1 Alpha in Acute-on-Chronic Liver Failure International journal of molecular sciences 2024-01-26 [PMID: 38338821]
Wang T, Dong Y, Huang Z et al. Antioxidants stimulate BACH1-dependent tumor angiogenesis The Journal of clinical investigation 2023-08-31 [PMID: 37651203] (ChIP, Mouse) ChIP Mouse
Chen R, Wang H, Zheng C et al. Polo-like kinase 1 promotes pulmonary hypertension Respiratory Research 2023-08-19 [PMID: 37598171] (Western Blot) Western Blot
Liao Q, Zhu C, Sun X et al. Disruption of sirtuin 7 in zebrafish facilitates hypoxia tolerance Journal of Biological Chemistry 2023-08-01 [PMID: 37481210] (In vivo assay, Block/Neutralize) In vivo assay, Block/Neutralize
Show All 227 Publications.

Reviews for HIF-1 alpha Antibody (NB100-134) (14) 4.814

Average Rating: 4.8
(Based on 14 reviews)
We have 14 reviews tested in 4 species: Human, Rat, Other, Zebrafish.

Reviews using NB100-134:
Filter by Applications
WB
(10)
IHC-P
(2)
IF
(1)
IP
(1)
All Applications
Filter by Species
Human
(9)
Rat
(2)
Other
(2)
Zebrafish
(1)
All Species
Images Ratings Applications Species Date Details
Western Blot HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
KARTHIKEYAN THIRUGNANAM
WB Zebrafish 02/07/2020
View

Summary

ApplicationWestern Blot
Sample TestedZebrafish embryo lysates
SpeciesZebrafish
LotAP-13
Western Blot HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
Verified Customer
WB Human 10/28/2018
View

Summary

ApplicationWestern Blot
Sample Testedbt549,Human MD-MB-231 cells
SpeciesHuman
LotAE-7
Western Blot HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
Verified Customer
WB Human 04/30/2018
View

Summary

ApplicationWestern Blot
Sample Tested20 ug whole cell lysate
SpeciesHuman
LotAE-3
Western Blot HIF-1 alpha NB100-134
Enlarge
4
reviewed by:
Verified Customer
WB Human 03/22/2017
View

Summary

ApplicationWestern Blot
Sample TestedHCT116 whole cell lysate
SpeciesHuman
LotAA2
Immunohistochemistry-Paraffin HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
Helder Andre
IHC-P Other 08/02/2016
View

Summary

ApplicationImmunohistochemistry-Paraffin
Sample TestedZebrafish retina with mouse tissue as control
SpeciesOther
Western Blot HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
Helder Andre
WB Human 07/07/2016
View

Summary

ApplicationWestern Blot
Sample TestedRetinal and Choroidal primary endothelia
SpeciesHuman
  5
reviewed by:
Darren Richard
WB Rat 07/23/2015
View

Summary

ApplicationWestern Blot
Sample TestedVascular Smooth Muscle Cells
SpeciesRat
Western Blot HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
Verified Customer
WB Human 06/01/2015
View

Summary

ApplicationWestern Blot
Sample TestedMDA-MB-231 Cell Lysate
SpeciesHuman
Immunofluorescence HIF-1 alpha NB100-134
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5
reviewed by:
Helder Andre
IF Human 05/14/2015
View

Summary

ApplicationImmunofluorescence
Sample TestedARPE-19 cells
SpeciesHuman
Western Blot HIF-1 alpha NB100-134
Enlarge
4
reviewed by:
Xiuquan Luo
WB Human 09/18/2014
View

Summary

ApplicationWestern Blot
Sample TestedHEK293 cell lysate
SpeciesHuman
Western Blot HIF-1 alpha NB100-134
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4
reviewed by:
Pramod Mallikarjuna
WB Human 08/30/2014
View

Summary

ApplicationWestern Blot
Sample TestedClear cell renal cell carcinoma samples
SpeciesHuman
Immunohistochemistry-Paraffin HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
Liza Sousa
IHC-P Other 01/30/2014
View

Summary

ApplicationImmunohistochemistry-Paraffin
Sample TestedCanine corpus luteum
SpeciesOther
Western Blot HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
Sandhya Khurana
WB Rat 02/05/2012
View

Summary

ApplicationWestern Blot
Sample TestedPC12 nuclear extract, Sample Amount: 50ug
SpeciesRat
Immunoprecipitation HIF-1 alpha NB100-134
Enlarge
5
reviewed by:
Kelie Reece
IP Human 10/27/2011
View

Summary

ApplicationImmunoprecipitation
Sample TestedPC-3 Cells
SpeciesHuman
LotK3

Product General Protocols

Video Protocols

WB Video Protocol
ICC/IF Video Protocol

FAQs for HIF-1 alpha Antibody (NB100-134). (Showing 1 - 10 of 19 FAQs).

  1. Why is there a difference between the theoretical MW for HIF1A and the observed MW for HIF-1 alpha?
    • HIF1A, like many other proteins, has post-translational modifications. Depending on the size, amount and nature of the post-translational modifications, it can cause subtle to very large changes in molecular weight.
  2. Which antibody(ies) do you recommend for the detection of HIF-1a by immunohistochemistry in the sections of paraffin-embedded mouse liver samples? I would appreciate if you can give me several choices and rank them in the order of performance. My goal is to distinguish HIF upregulation by prolyl hydroxylase inhibitor in different liver cells.
    • All of our antibodies are of high quality and are well tested/validated in species/applications we list on the datasheet. However, we suggest the following four HIF-1 alpha antibodies based upon customer reviews, as well as the number of peer reviewed publications in which these products have been cited by researchers from reputed institutes. (1) HIF-1 alpha Antibody (H1alpha67) (cat# NB100-105) (cited in at least 218 peer reviewed publications) (2) HIF-1 alpha Antibody (cat# NB100-479) (cited in at least 51 peer reviewed publications) (3) HIF-1 alpha Antibody (H1alpha67) (cat# NB100-123 ) (cited in at least 38 peer reviewed publications) (4) HIF-1 alpha Antibody (cat# NB100-449) (cited in at least 31 peer reviewed publications).
  3. I would like to know, does a path exist for detection of HIF 1 in venous blood before and after revascularization of the leg? 
    • We are not entirely sure if HIF-1 alpha will be present in the leg after revascularization. It may be present, but you may want to search the literature to see if this has been looked at before. If not, then this would certainly be an experiment worth doing.
  4. What is the molecular weight (kDa) of protein HIF 1 alpha in western blot?
    • The theoretical molecular weight of HIF 1-alpha is ~93kDa. However, you will likely see a band between 100-120kDa due to phosphorylation.
  5. We got the Hif1a (NB100-105) antibody from you guys. I used the concentration that is mentioned on your website, but I am getting a band of a completely different size (~70kDa) and not the 120 kDa mentioned.
    • HIF-1 alpha is a notoriously difficult protein to work with due to its rapid degradation. Therefore, the ~70kDa bands are most likely degradation products. It is very important to lyse the cells in hypoxic conditions. We strongly recommend lysing the cells directly into the Laemmli buffer and doing that quickly, so that the exposure to oxygen is minimized.Please go through our hypoxia related FAQs, you should find them very informative.Also, running a positive control may help confirm the band specificity in your samples. You may prepare them yourself or choose some from our catalog, for example: 1) HeLa Hypoxic / Normoxic Cell Lysate (NBP2-36452)2) HeLa Hypoxic (CoCl2) / Normoxic Cell Lysate (NBP2-36450)
  6. I performed several Western Blots of HIF-1 alpha with different lysis buffers, whole lysates, and cytoplasm/nuclei extractions. I can’t seem to get a good western blot (poor signal, band much lower than expected, etc.). Can someone suggest some technical considerations/tricks I should consider using?
    • A major issue that researchers working with HIF-1 alpha is degradation due to exposure to oxygen. In western blot, this results in a weaker band and/or the appearance of multiple low molecular weight bands (40-80 kDa). We recommend preparing the lysates after collection of cells/tissues as quickly as possible (on ice), preferably in a hypoxic chamber. We also recommend including a true hypoxia mimetic control (eg: cells treated with CoCl2, DMOG… etc.). The controls help distinguish your band of interest from potential degradation/dimer bands.For more troubleshooting tips and frequently asked questions regarding hypoxia/HIFs, you can refer to our hypoxia-related FAQs.
  7. I am doing HIF1 westerns in HIF-overexpressing mouse liver and adipose tissue using Novus antirabbit HIF1a antibody with overnight incubation. I am getting strong bands around 90kDa. I am aware that HIF theoretical molecular weight is 93kDa, but in westerns, the HIF band is usually around 120kDa according to my internet research. Can someone let me know if I’m getting the right HIF band or just some non-specific bands? Thanks.
    • (1)    HIF-1 alpha’s theoretical molecular weight is 93kDa. The post translationally modified/ubiquitinated form of HIF-1 alpha protein (fails to undergo proteasomal degradation) shows up as a band in the 110-130 kDa range on a Western blot.(2)    The dimeric protein may appear at a position above 200 kDa on non-reducing gels.(3)    Importantly, HIFs are among the most rapidly degradable proteins; therefore, sample preparation is highly important when analyzing HIF1 alpha or HIF2 alpha. When degraded, HIF-1 alpha may show up between 40-80 kDa position on Western blot. Degradation may be avoided by preparing the samples as soon as possible after collection of cells/tissues in hypoxic chamber. Notably, the tissues/cells should be kept on ice during lysate preparation and the lysates should be analyzed as soon as possible.(4)    For troubleshooting suggestions/feedback on more than 25 similar frequently asked questions, I would recommend visiting Novus page: FAQs - Hypoxia and HIFs (5)    Last but not the least, Novus technical support team may be contacted via email
  8. I have Hif1a nuclear protein extract at -80C. I am wondering if anyone knows how long it would be good for at that temperature since HIf1a is known to be degraded easily.Thank you!
    • You could try a few things to further inhibit the degradation.1) Use the protease inhibitors (if you are not already using them).2) Lyse cells into a buffer that contains SDS or LDS (eg: Laemmli's buffer), since SDS and LDS denature and inhibit proteases. Lysis may even be performed with reducing agents in the buffer (eg. DTT), but this will make your lysates unsuitable for BCA assay.3) Lysing samples rapidly ensures that the samples are instantly homogenized (it also shears DNA released by the SDS).5) Flash-freezing samples in liquid nitrogen rather than freezing at -80*C reduces the window of time for protease activity.6) Freeze samples in individual aliquots, instead of thawing the same vial multiple times.
  9. I am curious to know the biochemical reactions of CoCl2 that mimic hypoxia. Is it that CoCl2 can bind any ubiquitin enzyme which regulates their degradation?
    • CoCl2 inhibits PHD enzymes (the body’s “oxygen sensors”) by replacing the Fe ion with Co, preventing these enzymes from marking HIF-1 alpha for degradation. CoCl2-based hypoxia mimetic samples are often used as positive control in HIF analysis. For more troubleshooting tips and frequently asked questions regarding hypoxia/HIFs, you can refer to our hypoxia-related FAQs.
  10. I am curious to know the biochemical reactions of CoCl2 that mimic hypoxia. Is it that CoCl2 can bind any ubiquitin enzyme which regulates their degradation?
    • CoCl2 inhibits PHD enzymes (the body’s “oxygen sensors”) by replacing the Fe ion with Co, preventing these enzymes from marking HIF-1 alpha for degradation. CoCl2-based hypoxia mimetic samples are often used as positive control in HIF analysis. For more troubleshooting tips and frequently asked questions regarding hypoxia/HIFs, you can refer to our hypoxia-related FAQs.
  11. Show All 19 FAQs.

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Blogs on HIF-1 alpha. Showing 1-10 of 37 blog posts - Show all blog posts.

Hypoxia-Dependent CAR Stabilizing Construct in T cells Improves Solid Tumor Targeting and Efficacy
By Victoria Osinski, PhDDespite advances in the development of cancer immunotherapies, those specifically targeting tumors still remains limited. Currently, there is great interest in utilizing chimeric antigen rece...  Read full blog post.

Tired T cells: Hypoxia Drives T cell Exhaustion in the Tumor Microenvironment
By Hunter MartinezThe paradigm shifting view of the immune system being leveraged to target cancer has led to numerous therapeutic breakthroughs. One major cell group responsible for this revelation is a T cell. ...  Read full blog post.

Understanding ‘Y’ in Breast Cancer: Crucial Role of DNA/RNA-binding Protein YB-1 in the Development, Pre-Invasive, and Metastatic Phases
Jamshed Arslan, Pharm D, PhD In the United States, 1 in 8 women will be diagnosed with breast cancer in her lifetime.1 Despite the prevalence, cancer genesis is a mystery. The heterogeneity of cancers makes it diff...  Read full blog post.


  Read full blog post.

Breast cancer stem cells survive chemotherapy through S100A10-ANXA2-SPT6 interaction that epigenetically promotes OCT4-mediated stemness
By Jamshed Arslan, Pharm D, PhDBreast cancer is the most common cancer among women that causes the greatest number of cancer-related deaths worldwide. After radiotherapy or cytotoxic chemotherapy like paclitax...  Read full blog post.

mTOR Signaling and the Tumor Microenvironment
By Yoskaly Lazo-Fernandez, PhD The mammalian target of rapamycin (mTOR) is a conserved serine/threonine kinase that, as a member of two distinct intracellular protein complexes, mTORC1 and mTORC2, regulates protein ...  Read full blog post.

Bad news for stomach cancer: BAMBI protein inhibits gastric carcinoma via TGF-beta/epithelial-mesenchymal transition signaling
By Jamshed Arslan Pharm.D. Gastric carcinoma is the second leading cause of cancer-related deaths worldwide. One of the key features of gastric carcinoma is acidosis, which promotes growth and metastasis of gastric ...  Read full blog post.

Developmental regulator Daam2 promotes glial cell tumors by degrading Von Hippel-Lindau protein
By Jamshed Arslan Pharm.D. Glioblastoma is an aggressive type of cancer that forms from the star-shaped glial cells of the central nervous system, called astrocytes. Intriguingly, several genes linked to glioblasto...  Read full blog post.

Stemness for Surviving Hypoxia: TGF-beta/Smad Signaling in Multiple Myeloma
By Jamshed Arslan Pharm.D. Multiple myeloma (MM) is a cancer of antibody-producing plasma cells. The bone marrow (BM) of MM patients is hypoxic, and MM cells overexpress many cancerous genes that are regulated by hy...  Read full blog post.

Forecasting and Targeting a Rare Cancer with Hypoxia-Inducible Factor
By Jamshed Arslan Pharm.D. Cancers of nerve, adipose, and other soft tissues are called soft tissue sarcomas (STS). Malignant peripheral nerve sheath tumor (MPNST) is an example of a rare and hard-to-treat STS; eve...  Read full blog post.

Showing 1-10 of 37 blog posts - Show all blog posts.
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