抗HIF-1 alpha抗体 | Anti-HIF-1 alpha Antibody

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Image

	Biological Strategies Validation. Western Blot: HIF-1 alpha Antibody [NB100-479] - Analysis in A. PC12 (rat) cells, 20% oxygen and B. PC12 (rat) cells, 1% oxygen.
	Biological Strategies Validation. Western Blot: HIF-1 alpha Antibody [NB100-479] - Analysis of HIF-1 alpha in mouse hepatocytes (left lane: normoxic and right lane: hypoxic) using HIF-1 alpha antibody. Image from verified customer review.
	Biological Strategies Validation. Western Blot: HIF-1 alpha Antibody [NB100-479] - Analysis in a hypoxic sample. Lane 1: CoCl2 treated Cos-7 nuclear extract (50 ug, hypoxic). Lane 2: Untreated Cos-7 nuclear extract (50 ug, normoxic). 10 second ECL exposure.
	Immunohistochemistry-Paraffin: HIF-1 alpha Antibody [NB100-479] - Staining in normal mouse kidney showing (A) staining with antibody and (B) blocking peptide used at 10-fold excess concentration. Images provided by Dr Yves Heremans. Please see the product review of NBC1-18422 for additional details.
	Immunohistochemistry: HIF-1 alpha Antibody [NB100-479] - Staining of human placenta, villi.
	Immunocytochemistry/Immunofluorescence: HIF-1 alpha Antibody [NB100-479] - Detection of HIF-1 Alpha (green) in RCC4 cells using NB100-479. Nuclei (Blue) were counterstained using Hoechst 33258.
	Immunohistochemistry-Paraffin: HIF-1 alpha Antibody [NB100-479] - Analysis in paraffin section of mouse skin wound using NB100-479 at 1:6,000. Image courtesy of product review by Ian Darby of RMIT University.
	Western Blot: HIF-1 alpha Antibody [NB100-479] - Comparison of HIF-1 alpha levels in HMC-1.2 cells and CBMC cells under normoxic and hopoxic conditions. DFX was used as a positive control. [PMID: 20808808] Image using the HRP form of this antibody.
	Western Blot: HIF-1 alpha Antibody [NB100-479] - U251 cells exposed to 4 hour hypoxia (0.5% oxygen) incubation. This image was submitted via customer Review.
	Immunohistochemistry: HIF-1 alpha Antibody [NB100-479] - Analysis in normal mouse kidney. Image courtesy of product review by Yves Heremans.
	Immunohistochemistry-Paraffin: HIF-1 alpha Antibody [NB100-479] - Analysis in human kidney tumor.

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Background

HIF1 (hypoxia-inducible factor 1), a heterodimeric transcription factor complex central to cellular response to hypoxia, consists of two subunits (HIF-1 alpha and HIF-1 beta) which are basic helix-loop-helix proteins of the PAS (Per, ARNT, Sim) family. Expression of HIF-1 alpha protein is regulated by cellular oxygen level alterations as well as in oxygen-independent manner via different cytokines (through the PI3K-AKT-mTOR pathway), growth factors, oncogenic activation, or loss of tumor suppressor function etc. In normoxic cells, HIF-1 alpha is proline hydroxylated leading to a conformational change that promotes its binding to the VHL (von Hippel Lindau) protein E3 ligase complex; ubiquitination and followed by rapid proteasomal degradation. Hypoxia as well as chemical hydroxylase inhibitors (desferrioxamine, cobalt etc.) inhibit HIF-1 alpha degradation and lead to its accumulation in the cells, whereas, contrastingly, HIF-1 beta/ARNT (AhR nuclear translocator) remains stable under both conditions. Besides their critical role in hypoxic response, HIF1s regulates the transcription of genes responsible for angiogenesis, erythropoiesis/iron-metabolism, glucose metabolism, cell proliferation/survival, adipogenesis, carotid body formation, B lymphocyte development and immune reactions.

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