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Antibody News

Exploring how ABCG8 Affects Heart Disease

Monday, August 15, 2011 - 14:48

The high prevalence of atherosclerosis in developed nations is not breaking news; it has been well established that heart disease is the leading cause of death in the United States, and it presents a major socioeconomic burden. Investigators across the globe have been laboring for decades to unravel the molecular mechanisms that contribute to atherosclerosis, and while some of the major players in these pathways have been identified, unanswered questions persist.  Over the past ten years, an enormous amount of work has been done to establish the role of ATP-binding cassette (ABC) transporters in lipid trafficking, and their subsequent influence on the development of atherosclerosis.  Two rare diseases have been identified as models for studying the effects of ABC transporter mutations on the progression of atherosclerosis: Tangier disease, which is caused by a mutation in ABCA1, and sitosterolemia, which occurs as a result of mutations in either...

Understanding EEA1's Role in Membrane Endosome Fusion

Thursday, July 28, 2011 - 03:34

EEA1, or Early Endosome Antigen 1 is a Rab5 effector essential for early endocytic membrane fusion. The EEA1 antibody is used in membrane trafficking and chaperone studies, and as an endosome marker. We at Novus Biologicals have a comprehensive antibody catalog of EEA1 products.

A homodimeric endosomal trafficking protein which was originally identified as an autoantigen, EEA1 antibody studies have shown the protein has a C-terminal FYVE zinc finger domain, which interacts with PtdIns[3]P (phosphatidylinositol 3-phosphate) enriched membrane vesicles, playing a vital role in the docking and fusion of early endosomes and penetrating bilayers.

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Profiling the Profilin 1 Antibody

Monday, July 25, 2011 - 03:23

Profilin-1, or Pfn-1, is a small actin-binding protein which plays an essential role controlling the growth of microfilaments. Profilin 1 and Profilin 2 have similar biochemical properties but are expressed in different tissues. The Profilin 1 antibody targets the more common form of the protein, which is expressed everywhere but the skeletal muscle. We at Novus Biologicals have an extensive range of Profilin I and Profilin II antibody products in our antibody catalog.

Profilin regulates the spatial and temporal growth of actin microfilaments, thus aiding cellular migration, changes in cellular morphology, and processes such as organ development and wound healing to take place. Profilin mainly binds to actin, but has over 50 binding partners in total. Profilin I antibody studies have shown that the protein may have other functions apart from actin regulation.

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Bax Research Gives New Insight into Oxidative Apoptosis

Wednesday, July 20, 2011 - 03:20

Bax is a member of the Bcl-2 family; an extensive range of proteins which play key roles in apoptosis, or programmed cell death, by regulating outer mitochondrial membrane permeability. We at Novus Biologicals are one of the leading antibody suppliers for apoptosis research, with an extensive range of Bax antibody products.

The Bcl-2 proteins share one or more conserved domains (BH1 – 4.) They are divided into three subfamilies based on their function and domain: Antiapoptotic (i.e. pro-survival); proapoptotic multidomain, and proapoptotic BH3-domain only. The BH domains are essential to heterodimerisation between family members. Cellular homeostasis is maintained by the balance of activity between pro- and antiapoptotic proteins.

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TNF Alpha Antibodies: Potential Therapeutic Tools

Thursday, July 14, 2011 - 03:17

Tumor necrosis factor alpha, or TNF alpha antibody products are widely used in cytokine and immunology research. TNF alpha is a pleiotropic ligand which plays an essential role in apoptosis, immune system development and the inflammatory response. We at Novus Biologicals have a number of TNF alpha antibody products in our catalog, which was recently enhanced by the addition of a new neutralizing TNF alpha antibody (NBP1-43235) . It is reactive against mouse, rat and rabbit tumour TNF-a, but not the human form of the antigen.

In nature, neutralizing antibodies defend cells from attack by antigens by neutralizing their biological effects. Normally, antibody binding flags antigens, which signal for their destruction – a response which may be...

Using Ubiquitin Antibodies in Various Disease Research

Monday, July 11, 2011 - 03:15

Ubiquitin is a small, highly conserved protein which plays an important role in protein breakdown, covalently bonding to proteins to mark them for proteolytic degradation in a process called ubiquitination. Ubiquitin also binds to inclusion bodies (accumulations of protein) in pathological conditions such as Parkinson’s and Alzheimer's disease. Ubiquitin antibody products are therefore useful for identifying inclusions in neuroscience research.

The Ubiquitin Proteasome Pathway, or UPP, is the principal method for protein degradation in normal cells, and central to the regulation of many cellular processes, including...

Notch Antibody Proves Metastatic Lung Cancer Has a Jagged Edge

Wednesday, June 29, 2011 - 07:48

We at Novus Biologicals are one of the leading antibody suppliers for cancer research. In a recent Notch antibody study, the Notch ligand Jagged 2 was found to promote the growth of metastatic lung cancer cells by inhibiting miR-200, which blocks epithelial-to-mesenchymal transition (EMT) – an early stage in metastasis which, if blocked, can prevent secondary tumour growth.

The Notch proteins are large single-pass transmembrane receptors, important to embryonic development cell signalling. It comprises an intracellular and extracellular domain, the latter being composed of EGF-like repeats and cysteine-rich Notch/Lin-12 repeats. Notch signalling is initiated following Delta or Jagged1/2 ligand binding. Antibody studies have shown this results in cleavage of the extracellular domain, initiating translocation of the intracellular fragment to the nucleus, triggering transcription...

The Sox2 Antibody Aids Brain Cancer Research

Wednesday, June 22, 2011 - 07:47

The Sox2 antibody is widely used in sensory, neuroscience and stem cell marker research. Recently, Sox2 antibody preparations identified the Sox2 protein as a marker for malignant neural gliomas. We at Novus Biologicals offer a wide variety of highly validated Sox2 antibodies.

SOX2 (also known as SRY-related HMG BOX gene 2), encodes a transcription factor essential to embryonic stem cell pluripotency and early neural development. It forms a trimeric complex with OCT4, controlling expression of YES1,...

The Adiponectin Antibody: Obesity, Diabetes and Breast Cancer Research

Friday, June 17, 2011 - 07:44

Adiponectin (also called ADIPOQ) is a cytokine expressed exclusively in adipose tissue. It has a number of functions, regulating lipid metabolism, gluconeogenesis and the inflammatory response. Adiponectin antibody products are widely used in diabetes, obesity and lipid metabolism research. Obesity and Type 2 Diabetes are linked to an increased risk of breast cancer in women. New adiponectin antibodies recently proved important in this area of research.

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The Role of the MMP2 Antibody in Colorectal Cancer Research

Monday, June 13, 2011 - 07:42

The enzymes of the Matrix Metalloproteinase (MMP) family assist in the degradation of the extracellular matrix, under both normal and pathological conditions. MMP antibodies have identified roles in a number of physiological processes, such as embryonic development and tissue remodelling. They also regulate enzyme cascades, expression of various proteins and the migration of both normal and malignant cells.

The MMP2 antibody is used in a number of research areas, including metastasis, angiogenesis, apoptosis and tumor suppression. MMP2 antibody studies have shown MMP2 plays a specific role in the degradation of collagens and Gelatin 1. It also functions in angiogenesis, tissue repair, vascularization, inflammation, atherosclerotic plaque rupture, endometrial menstrual breakdown and tumour...

Working with the V5 Tag Antibody

Friday, June 10, 2011 - 07:39

The V5 tag antibody identifies the V5 epitope tag, enabling proteins of interest to be analyzed and studied via ELISA, Western blot and other immunochemical methods. We at Novus Biologicals are one of the leading suppliers of epitope tag reagents, with an extensive range of V5 tag antibody products on our antibody database.

An epitope tag is a short peptide sequence, which is bioengineered onto the N- or C- terminus of a protein so it can be recognized by the equivalent antibody, or antibody paratope (i.e. the area of the immunoglobulin receptive to that tag).

Western Blot: V5-TAG Antibody

Epitope tags are created using recombinant DNA technology, which allows the fusion of a short sequence of...

5 Stars for the Lightning-Link HRP Antibody Labeling Kit

Wednesday, June 8, 2011 - 10:05

Novus' Lightning-Link HRP Antibody Labeling Kit (cat# 701-0000) has received some glowing product reviews and customer feedback lately. One satisfied customer wrote, "Fast, efficient, stable direct HRP conjugation - best reagent we have found..." Another reviewer wrote, "This conjugation kit worked beautifully [and] the procedure is so simple. Although we had some [initial] concerns, it worked very well."

Titration: Lightning Link Conjugation Kit

The Lightning-Link Antibody Labeling Kits are one step labeling procedures that provide 100% antibody recovery, but require only 30 seconds...

Win $500 to attend your next Conference on Novus!

Monday, June 6, 2011 - 12:24

Novus is launching a new Travel Grant offer for researchers who provide feedback on our antibodies.

For each complete product review that you submit, you will be entered into a drawing for a $500 travel grant! We will select a winner every 3 months - giving you 4 chances for you to win each year!  The winner will receive a $200 airline voucher and $300 towards registration for a scientific conference of your choice.

Complete reviews will require a descriptive summary of the experiment and results, regardless of whether they are positive or negative, and a high quality image. However, researchers may also submit reviews for previously untested species and applications that are being tested under the Innovators Reward Program. Therefore, you could earn Innovators Rewards, Novus points toward a future discount, and be entered to win the Travel Voucher, all by submitting one review...

Survivin Acetylation: Affecting Apoptosis and Cancer

Thursday, June 2, 2011 - 11:48

Survivin (BRIC5) is an inhibitor of apoptosis that also promotes cellular adaptation under stressful conditions and helps to regulate cell division. Recently, an antibody study by Dr. H Wang et al. at Brown University [PMID: 20826784] found that Survivin is acetylated at lysine residue 129, thereby affecting its subsequent subcellular localization. Specifically, acetylation promotes Survivin to homodimerize and localize in the nucleus, whereas deacetylation causes heterodimerization with CRM1 and export from the nucleus.

Additionally, the authors found that acetylation causes the nuclear-localized Survivin to bind to STAT3 and inhibit the activation of STAT3 target oncogenes. This was confirmed using a mutated 129K nucleotide to...

Spotlight on SNX27 Antibodies

Wednesday, June 1, 2011 - 11:24

Sorting Nexin Family Member 27 (SNX27) binds the cell membrane to regulate endocytic vesicular and protein trafficking. SNX27 has also been shown to play a key role in the endocytic recycling pathway, whereby internalized membrane proteins and lipids are degraded and recycled into the cell, in T lymphocytes. In their groundbreaking work on endocytic recycling pathways, Dr. F Maxfield and Dr. T McGraw showed that these pathways are essential for proper organelle maintenance and homeostatic regulation of molecules.

Immunocytochemistry/Immunofluorescence: SNX27 Antibody

Although it contains the characteristic internal endosome binding PZ domain,...

The Ki67 Antibody in Cell Marker Studies

Monday, May 30, 2011 - 02:15

The MK167, or Ki67 antibody recognizes a nuclear protein encoded by the MK167 gene. Ki167 is involved with RNA transcription and essential to cellular proliferation, being expressed by proliferating cells at all stages of the active cell cycle; it is exclusively used as a marker for cellular proliferation. The Ki67 antibody is a useful tool in cancer research and neuroscience studies; however, MIB-1 antibodies also target the Ki67 marker and are preferred for clinical use. During interphase, Ki67 is exclusively located in the nucleus, but relocates to the chromosome surface during cell division. The Ki67 antibody is a highly useful aid for determining the growth faction of cell populations in neoplasms and tumors, particularly those of the brain, prostate and...

The Importance of the COX IV Antibody to Apoptosis Research

Tuesday, May 24, 2011 - 09:55

COX IV isoform 1 is a nuclear-encoded polypeptide chain of the Cytochrome C Oxidase enzyme, located on the mitochondrial inner membrane. Owing to its widespread distribution in human and mammalian tissues, COX IV antibodies are widely used as loading controls for immunological assays. However, following pioneering research done by Wang et al in 1996, the COX IV antibody catalog has also proven useful in the areas of hypoxia, apoptosis and cancer research.

Cytochrome c oxidase is the terminal enzyme of the electron transport chain in the mitochondria. Its function is to couple electrons transferred from reduced cytochrome C to molecular oxygen, contributing to a proton electrochemical gradient in the process. The COX complex in composed of 13 mitochondrial-encoded and nuclear-encoded...

The Osteopontin Antibody and Hepatic Research

Monday, May 23, 2011 - 02:13

Antibody suppliers, such as us at Novus Biologicals, supply a wide range of cell marker products, among them the Osteopontin antibody. Recently, the osteopontin antibody has proven useful in hepatic cancer research.

Osteopontin (OPN) is mainly expressed by the osteoblasts; its primary function is in the mineralization of bone. However, OPN is expressed to a lower degree in other areas of the body, being involved in cell adhesion, cell migration and the inflammatory response.

Osteopontin has been implicated in a number of inflammatory diseases including rheumatoid arthritis (RA), multiple sclerosis and hepatitis. It is also upregulated in a number of cancers. Osteopontin antibody studies have shown OPN is modified in a number of tissue-specific ways, including phosphorylation, glycosylation, sulphation and transglutamination.

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The Role of the Caspase 3 Antibody in Apoptosis Research

Friday, May 20, 2011 - 10:46

The caspases are a group of cysteine protease enzymes essential to apoptosis, inflammation and necrosis. Caspase 3 has been identified as one of the key mediators of apoptosis.

Human caspases form three distinct groups: cytokine activators, which are involved with cytokine processing and the inflammatory response, and apoptosis initiators and activators (also called executioners). Caspase 3, 6 and 7 are executioners, while caspases 2, 8, 9 and 10 are all initiators.

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BDNF Antibodies Aid Research on Alzheimer's Therapies

Thursday, May 19, 2011 - 11:47

Brain-derived neurotrophic factor (BDNF) is known to be important for neuronal differentiation, survival, migration and plasticity in both the developing embryo and adult synapses. The BDNF antibody is also proving to be an important tool in Alzheimer's disease (AD) research.

AD is characterized by synaptic loss and neurodegeneration. In 2009, A.H Nagahara, et al. used BDNF antibodies in a series of AD animal studies, designed to investigate the possible therapeutic benefits of BDNF when administered as a drug [PMID: 19198615]. BDNF was administered to the brains of rats and primates, specifically targeting the hippocampus and cerebral cortex - two regions which are severely impaired in AD.

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CD11b Expression, Leukocyte Adhesion and the Innate Immune System

Wednesday, May 18, 2011 - 11:03

What is CD11b?

CD11b is an integrin family member which pairs with CD18 to form the CR3 heterodimer. CD11b is expressed on the surface of many leukocytes including monocytes, neutrophils, natural killer cells, granulocytes and macrophages, as well as on 8% of spleen cells and 44% of bone marrow cells. Functionally, CD11b regulates leukocyte adhesion and migration to mediate the inflammatory response. CD11b antibody studies have shown the protein to be directly involved in cellular adhesion, although migration can only take place in the presence of the CD18 subunit. As well as playing a role in various adhesion reactions, CD11b is a receptor for complement C3bi, mediating complement-coated particle uptake. Research using CD11b antibodies has identified CD11b as a receptor for fibrinogen gamma chain, factor X and ...

5 Stars for the PKM2 Antibody

Tuesday, May 17, 2011 - 10:11

Novus' Pyruvate Kinase M2 antibody (cat # NBP1-48308) has received some glowing product reviews and customer feedback lately. One satisfied customer wrote, "The best thing about this antibody is that it works well for immunofluorescence staining of frozen sections of rat glioblastoma tumor samples... [The staining] is exactly what we expected. This result further confirms that the antibody is specific for PKM2, and not PKM1."

Immunocytochemistry/Immunofluorescence: PKM2 Antibody

PKM2 is an important pyruvate kinase that catalyzes the...

Signalling Advances in Adiponectin Antibody Research

Monday, May 16, 2011 - 02:11

Adiponectin is an adipocytokine protein that positively regulates metabolism of lipids and glucose by suppressing glucose production from the liver, stimulating insulin sensitivity, and increasing the rate of fatty acid oxidation and glucose uptake. Insulin resistance, obesity and dyslipidemia (abnormal blood lipid levels) are all linked to Adiponectin deficiency. The Adiponectin antibody is also used in Type 2 Diabetes research.

In recent years, a number of antibody studies have focused on the metabolic pathways governing Adiponectin. In 2003, Yamauchi, et al. identified two Adiponectin receptors, Adipo R1 and Adipo R2. Subsequent experiments showed Adipo R1 to be the primary receptor in skeletal muscle, which is the body's main glucose-utilizing tissue. However, the underlying mechanism of...

Actin Nucleators and Other Developments in Actin Antibody Research

Friday, May 13, 2011 - 02:09

A highly conserved, abundant protein found in practically all eukaryotic cells, actin is a monomeric subunit of skeletal muscle thin filaments, and cytoskeleton microfilaments. Actin antibody products are routinely used in cell marker and loading control assays. However, actin antibody reagents are also used for cytoskeleton, cell motility, cytokinesis and cell signalling research. Our antibody catalog covers all the actin isoforms, with an extensive range of alpha, beta and gamma actin antibody products.

Actin antibody studies have revealed polymerization and depolymerization of actin to be essential to chemotaxis (cell motility) and cytokinesis (cell division). Polymerization is dependent upon nucleating factors such as ARP and the formin protein family. The Arp1/2 complex has been...

The Akt Antibody Plays Many Roles in Cancer Research

Monday, May 9, 2011 - 09:51

There are three human isoforms of the AKT gene, which plays a key role in several signalling pathways. Akt antibody studies have shown the Atk kinases to play a diverse number of roles within the cell, regulating angiogenesis, apoptosis, protein synthesis, intermediary metabolism and cellular differentiation. We at Novus Biologicals have a wide range of Akt products on our antibody database, targeting all three isoforms.

Akt antibody research has identified specific roles for the three isoforms of Akt. Akt1, the founding member of the family, is of major importance to cancer researchers. A key player in the PI3K/AKT/mTOR and several other pathways, Akt1 signalling...

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