What Is HDGF and Why Is It Biologically Important?

Hepatoma-derived growth factor (HDGF) is a heparin-binding, mitogenic protein originally identified in the conditioned medium of a hepatocellular carcinoma cell line. It is a member of the HDGF-related protein (HRP) family and is characterized by a conserved N-terminal HATH (homologous to the amino-terminus of HDGF) domain. HDGF is widely expressed in multiple tissues and has been implicated in cell proliferation, angiogenesis, embryonic development, and organ fibrosis. Elevated HDGF expression has been reported in various human cancers, making it a subject of active investigation as both a prognostic marker and a potential therapeutic target. Researchers studying tumor biology, vascular biology, or developmental pathways commonly incorporate HDGF detection into their experimental designs.

Key Specifications and Intended Applications

HDGF Mouse mAb (Ab349799) is a mouse-derived monoclonal antibody targeting HDGF. Monoclonal antibodies offer superior lot-to-lot consistency compared to polyclonal preparations, which is critical for reproducible research outcomes and cross-laboratory comparisons. The product is referenced under the absea catalog number KC-42019.

Typical applications for monoclonal antibodies of this class include, but may not be limited to:

• Western Blotting (WB): Detection of HDGF protein in cell or tissue lysates under denaturing conditions.
• Immunofluorescence (IF): Visualization of HDGF localization within fixed cells.
• Immunohistochemistry (IHC): Detection of HDGF expression in formalin-fixed, paraffin-embedded (FFPE) or frozen tissue sections.
• Enzyme-Linked Immunosorbent Assay (ELISA): Quantitative detection in plate-based formats.

Please consult the official product datasheet for confirmed application list, validated species reactivity, recommended dilutions, and positive control information before experimental use.

Storage, Handling, and Stability

Proper storage and handling are essential to maintain the activity and specificity of HDGF Mouse mAb. General best practices for monoclonal antibodies apply:

• Store according to the conditions specified on the product datasheet and vial label. Long-term storage is typically at -20°C, while short-term working aliquots may be kept at 4°C.
• Avoid repeated freeze-thaw cycles, as these can denature the antibody and reduce its binding efficiency. Prepare single-use aliquots upon first thaw.
• Centrifuge briefly before opening to recover any material from the cap or sides of the vial.
• Keep the antibody solution sterile and minimize exposure to light if the formulation contains a fluorescent conjugate or light-sensitive preservative.
• Do not use antibodies past the expiration date indicated on the Certificate of Analysis (CoA).

Contact Aladdin Scientific technical support if you observe visible precipitation, unexpected color change, or loss of expected reactivity.

Troubleshooting Common Experimental Issues

Researchers may occasionally encounter suboptimal results when using HDGF Mouse mAb. Below are evidence-based troubleshooting suggestions for the most frequently reported issues:

High Background Signal

• Increase blocking time or optimize the blocking agent (BSA vs. non-fat dry milk vs. commercial blockers).
• Titrate antibody concentration downward; excessive primary antibody is a common cause of background.
• Ensure wash steps are thorough (volume, number of washes, duration).

No or Weak Signal

• Verify that the target species is within the confirmed reactivity range stated on the datasheet.
• Check that sample preparation conditions preserve HDGF epitopes (e.g., avoid over-fixation in IHC).
• Confirm secondary antibody compatibility with a mouse primary antibody host.
• Consider antigen retrieval optimization for FFPE sections in IHC.

Non-Specific Bands (WB)

• Reduce primary or secondary antibody concentration.
• Optimize gel percentage to better resolve bands near the expected molecular weight of HDGF.
• Include appropriate positive and negative controls in every experiment.

Always refer to the product-specific datasheet and CoA for validated conditions before adjusting experimental parameters.

Ordering, Returns, and Technical Support

HDGF Mouse mAb is available from Aladdin Scientific under SKU Ab349799. To place an order, visit the Aladdin Scientific website product page, contact your regional sales representative, or use the institutional procurement portal if applicable.

Returns and Refunds: Antibody products are biological reagents subject to strict handling requirements. Returns may be accepted within the stated return window if the product was received damaged, incorrect, or non-functional under validated conditions. Please initiate a return request through Aladdin Scientific customer service with your order number and a description of the issue before shipping any items back.

Shipping: HDGF Mouse mAb is shipped under conditions recommended by the manufacturer to maintain stability during transit. Check your packing slip for cold-chain documentation. Inspect the package upon receipt and report any temperature excursion or damage within 24–48 hours.

Technical Support: For application-specific questions, protocol optimization, or to request a Certificate of Analysis or Safety Data Sheet (SDS), contact Aladdin Scientific technical support directly. Reference SKU Ab349799 and lot number in all communications for fastest resolution.