IL7 Mouse mAb Protocol: Applications & Usage Guide

IL7 Mouse mAb is a mouse-derived monoclonal antibody targeting interleukin-7 (IL7), supplied in PBS and designed for use in immunological research applications requiring high specificity and reproducibility.

Product SKU

Ab351127

Antibody Type

Mouse Monoclonal Antibody (mAb)

Target Antigen

Interleukin-7 (IL7)

Formulation

PBS (Phosphate-Buffered Saline), no carrier protein or preservative stated

Reference Catalog

absea#KC-3339

Host Species

Mouse

Overview of IL7 and the IL7 Mouse mAb

Interleukin-7 (IL7) is a hematopoietic cytokine produced primarily by stromal cells in the bone marrow and thymus. It plays a critical role in the development, homeostasis, and survival of B and T lymphocytes, making it an important target in immunology, oncology, and autoimmunity research.

The IL7 Mouse mAb (Ab351127) is a mouse-derived monoclonal antibody raised against IL7. Monoclonal antibodies offer highly consistent lot-to-lot performance and a single, defined epitope specificity, which is essential for reproducible experimental outcomes. This antibody is supplied in PBS, providing flexibility for downstream conjugation or direct use in a variety of immunological assays.

Materials and Equipment Required

Before beginning any assay using IL7 Mouse mAb (Ab351127), ensure the following materials and equipment are available:

• IL7 Mouse mAb (Ab351127), stored according to supplier recommendations
• Appropriate blocking buffer (e.g., 5% non-fat dry milk or 3% BSA in PBS-T for Western blot; 5–10% normal serum for IHC/IF)
• PBS or TBS with 0.05–0.1% Tween-20 (PBS-T or TBS-T) for washing steps
• Secondary antibody compatible with mouse primary IgG, conjugated to HRP, AP, or fluorophore as required
• Detection substrate or fluorescence imaging system appropriate to the secondary antibody conjugate
• Microcentrifuge, pipettes, and standard laboratory plasticware
• SDS-PAGE and transfer apparatus if Western blot application is intended

Note: Specific working dilutions have not been confirmed in the current source material. Refer to the product datasheet or perform a dilution optimization experiment before committing to large-scale use.

Step-by-Step Assay Protocol

The following general protocol outlines recommended steps for using IL7 Mouse mAb in common immunoassay formats. Users should validate and optimize conditions for their specific experimental system.

Sample Preparation

1. Prepare cell lysates, tissue homogenates, or recombinant IL7 protein samples according to standard laboratory procedures appropriate for the chosen assay format.
2. Quantify total protein concentration using a validated method (e.g., BCA assay) if performing Western blot.

Blocking and Primary Antibody Incubation

1. Block the membrane, slide, or plate with an appropriate blocking buffer for 1 hour at room temperature, or overnight at 4°C.
2. Dilute IL7 Mouse mAb (Ab351127) in blocking buffer or diluent to the empirically determined working concentration. (Specific recommended dilution not stated in source material — optimization required; see review flags.)
3. Incubate samples with diluted primary antibody for 1–2 hours at room temperature or overnight at 4°C with gentle agitation.

Washing and Secondary Antibody Incubation

1. Wash three times with PBS-T or TBS-T, 5–10 minutes per wash, with gentle agitation.
2. Apply a species-appropriate anti-mouse secondary antibody at the recommended dilution. Incubate for 1 hour at room temperature.
3. Wash three times as above.

Detection

1. Apply the appropriate detection substrate or image using a fluorescence scanner, according to the secondary antibody conjugate used.
2. Capture and analyze images or signals using validated imaging software.

Storage, Handling, and Troubleshooting

Storage: IL7 Mouse mAb (Ab351127) is formulated in PBS. For short-term storage (up to 1 month), keep at 4°C. For long-term storage, aliquot and store at −20°C or −80°C to avoid repeated freeze-thaw cycles, which can reduce antibody activity. Do not store at room temperature for extended periods.

Handling: Centrifuge the vial briefly before opening to collect contents at the bottom. Use sterile techniques to avoid contamination. Avoid vigorous vortexing.

Troubleshooting:

• High background: Increase blocking time or concentration; increase number or duration of wash steps; reduce primary antibody concentration.
• No signal: Verify that the secondary antibody is compatible with mouse IgG; confirm that target IL7 is expressed in the sample; check antibody integrity after storage.
• Non-specific bands (Western blot): Optimize antibody dilution; confirm sample preparation conditions; consider using a more stringent wash buffer.

Note: Specific storage temperature and expiry data were not provided in the source material. Users should consult the product datasheet supplied with Ab351127 for authoritative storage conditions.

Expected Results and Data Interpretation

When used correctly, IL7 Mouse mAb (Ab351127) should produce a specific signal corresponding to IL7 protein expression in positive control samples, with minimal background in negative controls.

IL7 has a molecular weight of approximately 17–25 kDa depending on glycosylation state; users performing Western blot should expect to observe a band in this range in IL7-expressing samples. For immunofluorescence or IHC, signal is expected in tissues or cells known to secrete or respond to IL7, such as thymic stromal cells, bone marrow stromal cells, and certain lymphocyte populations.

Always include appropriate positive and negative controls in each experiment to validate assay performance and ensure data reliability. Relative signal intensity should be normalized to a housekeeping protein or input control as appropriate for the assay format.

Note: Exact molecular weight range and application-specific expected outcomes should be confirmed against the product datasheet for Ab351127, as these were not explicitly provided in the source material.

Frequently asked questions

What species and isotype is the IL7 Mouse mAb (Ab351127)?

IL7 Mouse mAb (Ab351127) is a monoclonal antibody derived from mouse host species. The specific isotype (e.g., IgG1, IgG2a) is not stated in the available source material; please refer to the product datasheet or contact Aladdin Scientific for confirmation.

In which buffer is IL7 Mouse mAb supplied, and does it contain preservatives?

IL7 Mouse mAb (Ab351127) is supplied in PBS (phosphate-buffered saline) only. No preservative or carrier protein is mentioned in the current source material. Users planning long-term storage should consider adding BSA or glycerol and aliquoting to prevent degradation; however, confirm compatibility with your intended assay before adding any additives.

What applications is IL7 Mouse mAb validated for?

The source material does not explicitly list validated applications for Ab351127. Typical applications for mouse monoclonal antibodies targeting IL7 may include ELISA, Western blot, immunohistochemistry (IHC), immunofluorescence (IF), and flow cytometry. Users should perform application-specific optimization and consult the product datasheet for confirmed validated applications.

What is the recommended storage condition for IL7 Mouse mAb (Ab351127)?

Although specific storage conditions are not provided in the current source material, PBS-formulated monoclonal antibodies are generally stored at 4°C for short-term use or aliquoted and stored at −20°C to −80°C for long-term use. Avoid repeated freeze-thaw cycles. Always consult the product datasheet for authoritative guidance.

How should I optimize the working dilution for IL7 Mouse mAb?

Optimal working dilutions vary by application, sample type, and detection system. We recommend performing a serial dilution titration experiment using your specific assay format — typically testing a range such as 1:100 to 1:5000 for Western blot or 1:50 to 1:500 for IHC/IF — and selecting the dilution that provides the highest specific signal with the lowest background. Consult the product datasheet for any manufacturer-recommended starting dilutions.

References

1. Aladdin Scientific product listing: IL7 Mouse mAb, SKU Ab351127, absea#KC-3339, PBS formulation.
2. Grabstein KH, et al. Cloning of a T cell growth factor that interacts with the beta chain of the interleukin-2 receptor. Science. 1994. [IL7 biology reference — specific citation details not provided in source material and require verification.]

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.