MIP 1b Human

Macrophage Inflammatory Protein-1 Beta Human Recombinant (CCL4)
Cat. No.
BT20477
Source
Escherichia Coli.
Synonyms
Small inducible cytokine A4, CCL4, Macrophage inflammatory protein 1-beta, MIP-1- beta, MIP-1-beta(1-69), T-cell activation protein 2, ACT-2, PAT 744, H400, SIS-gamma, Lymphocyte activation gene 1 protein, LAG-1, HC21, G-26 T-lymphocyte-secreted protein, chemokine (C-C motif) ligand 4, ACT2, G-26, LAG1, MIP1B, SCYA4, AT744.1, MGC104418, MGC126025, MGC126026.
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
Greater than 99.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.
Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

Macrophage Inflammatory Protein-1 beta Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 69 amino acids and having a molecular mass of 7620 Dalton.
The CCL4 is purified by proprietary chromatographic techniques.

Product Specs

Introduction
Macrophage Inflammatory Proteins (MIPs), chemokines, play a crucial role in the immune response. Humans possess two primary forms, MIP-1a (CCL3) and MIP-1b (CCL4), synthesized by macrophages upon exposure to bacterial endotoxins. These MIPs activate granulocytes (neutrophils, eosinophils, and basophils), potentially leading to acute neutrophilic inflammation. Additionally, they stimulate the production of pro-inflammatory cytokines like interleukin-1 (IL-1), IL-6, and TNF-alpha from fibroblasts and macrophages. The genes encoding CCL3 and CCL4 reside on human chromosome 17.
Description
Recombinant human Macrophage Inflammatory Protein-1 beta, expressed in E. coli, is a single, non-glycosylated polypeptide chain comprising 69 amino acids with a molecular weight of 7.62 kDa. The purification of CCL4 is achieved through proprietary chromatographic methods.
Physical Appearance
Sterile, white lyophilized powder.
Formulation
Lyophilized from a 1 mg/mL aqueous solution without any additives.
Solubility
For reconstitution, dissolve the lyophilized Macrophage Inflammatory Protein-1b in sterile 18 MΩ-cm H2O to a concentration of at least 100 µg/mL. This solution can be further diluted in other aqueous solutions as needed.
Stability
Lyophilized MIP-1b remains stable at room temperature for up to 3 weeks; however, storage in desiccated conditions below -18°C is recommended. Reconstituted CCL4 should be stored at 4°C for 2-7 days. For long-term storage, add a carrier protein (0.1% HSA or BSA) and store below -18°C. Avoid repeated freeze-thaw cycles.
Purity
Purity exceeds 99.0% as determined by: (a) RP-HPLC analysis and (b) SDS-PAGE analysis.
Biological Activity
The biological activity is evaluated based on the chemoattractant properties towards human blood monocytes. A concentration range of 5-20 ng/mL corresponds to a specific activity of 50,000-200,000 IU/mg.
Synonyms
Small inducible cytokine A4, CCL4, Macrophage inflammatory protein 1-beta, MIP-1- beta, MIP-1-beta(1-69), T-cell activation protein 2, ACT-2, PAT 744, H400, SIS-gamma, Lymphocyte activation gene 1 protein, LAG-1, HC21, G-26 T-lymphocyte-secreted protein, chemokine (C-C motif) ligand 4, ACT2, G-26, LAG1, MIP1B, SCYA4, AT744.1, MGC104418, MGC126025, MGC126026.
Source
Escherichia Coli.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be, Ala-Pro-Met-Gly-Ser.

Product Science Overview

Structure and Production

MIP-1β is produced by various cell types, including macrophages, dendritic cells, and lymphocytes. The protein is a non-glycosylated molecule consisting of 69 amino acids and has a molecular mass of approximately 7.6 kDa . It is encoded by the CCL4 gene and is known for its ability to form heterodimers with another chemokine, MIP-1α (CCL3), which can enhance its biological activity .

Biological Functions

MIP-1β is primarily involved in the immune response and has several key functions:

  1. Chemotaxis: MIP-1β acts as a chemoattractant for various immune cells, including monocytes, natural killer (NK) cells, and T cells. It directs these cells to sites of infection or inflammation, where they can exert their immune functions .
  2. Inflammatory Response: MIP-1β induces the production of superoxide by neutrophils, contributing to the inflammatory response .
  3. Antiviral Activity: MIP-1β has been shown to have antiviral properties, particularly against herpes simplex virus type 1 (HSV-1). It can inhibit viral replication and spread .
  4. HIV Suppression: MIP-1β is a major HIV-suppressive factor produced by CD8+ T cells. It binds to the CCR5 receptor, which is also a co-receptor for HIV entry into cells, thereby blocking the virus’s ability to infect host cells .
Clinical Relevance

Due to its significant role in immune responses, MIP-1β has been studied extensively in various clinical contexts:

  • Inflammatory Diseases: Elevated levels of MIP-1β have been observed in several inflammatory conditions, including rheumatoid arthritis, multiple sclerosis, and inflammatory bowel disease. It is considered a potential biomarker for these diseases .
  • Cancer: MIP-1β is involved in the tumor microenvironment and can influence tumor progression and metastasis. It has been studied as a potential target for cancer therapy .
  • Infectious Diseases: Given its antiviral properties, MIP-1β is being investigated for its therapeutic potential in viral infections, including HIV .
Recombinant MIP-1β

Recombinant human MIP-1β is produced using recombinant DNA technology, typically in bacterial expression systems such as Escherichia coli. The recombinant protein is used in research to study its biological functions and potential therapeutic applications. It is available in various forms, including lyophilized powder, and is often used in assays to measure its activity and interactions with other molecules .

In conclusion, Macrophage Inflammatory Protein-1 Beta (MIP-1β/CCL4) is a critical chemokine with diverse roles in immune regulation, inflammation, and antiviral defense. Its recombinant form is a valuable tool in biomedical research, contributing to our understanding of immune responses and the development of potential therapies for various diseases.

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