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⚡ Detection Method
qPCR
🕒 Assay Time
Approximately 1 hour
🎯 Storage Temperature
–20 °C (stable for 24 months)

Product Description

SHENTEK® Residual HPV18 E6/E7 DNA Size Analysis Kit is a real-time PCR (qPCR) kit designed for rapid and specific quantitation of residual HPV18 E6 and E7 DNA fragments of different sizes (from HeLa cell origin) across biopharmaceutical sample types (in-process to final products). The kit amplifies four fragment lengths (E6: 100 bp and 288 bp; E7: 110 bp and 240 bp) using FAM-labeled target probes and includes an internal positive control (IPC, VIC) for inhibition monitoring. The kit includes HPV E6/E7 DNA Control for standard curve generation and is intended for research use only. For sample extraction instructions refer to the SHENTEK® Residual Host Cell DNA Sample Preparation Kit User Guide (Product No. 1104191).

Technical Specifications

Parameter Details
Target genes / fragments HPV18 E6 (100 bp, 288 bp) and E7 (110 bp, 240 bp)
Detection chemistry / channels FAM-labeled probes for target fragments; VIC-labeled probe for IPC; ROX as passive reference (recommended)
Reaction volume 30 μL total reaction volume (20 μL qPCR mix + 10 μL sample or standard)
qPCR mix composition (per reaction) qPCR Reaction Buffer 17 μL + primer&probe mix 3 μL (per target assay); IPC qPCR mix: qPCR Reaction Buffer 15.9 μL, IPC MIX 1.3 μL, ddH2O 2.8 μL (per 20 μL qPCR MIX)
Cycling conditions Activation 95 °C 10:00 (1 cycle); 40 cycles of 95 °C 00:15 and 60 °C 01:00 (fluorescence read during annealing/extension)
Standard curve / dynamic range (provided example) Standard curve points shown: 1×10^8 to 1×10^2 copies/μL (ST0 = 1×10^8, ST1 = 1×10^7 ... ST6 = 1×10^2); at least five concentrations recommended
Replicates Triplicates recommended for standards, controls and test samples
Controls included / required HPV E6/E7 DNA Control (quantified) for standard curve; NTC (no template control); NCS (negative control sample); IPC for inhibition monitoring
Input/sample volume 10 μL purified sample or 10 μL standard per reaction
Kit throughput Reagents for 4 × 100 reactions (as labeled on product)
Shelf life Up to 24 months when stored at –20 °C (check label expiration date)
LOD / LOQ Not specified in the user guide; recommended to determine during in-house validation
Inhibition acceptance criterion Mean Ct of IPC for sample should be within ±1.0 of the NCS Ct-IPC; significant increase suggests inhibition and sample recovery testing is recommended
Compatible instruments SHENTEK-96S, ABI 7500, Bio-Rad CFX96, LineGene 9600plus and other real-time PCR systems (user must configure detectors/filters accordingly)

Features

  • Fragment-size specific quantitation: Designed to amplify and quantify four distinct HPV18 E6/E7 fragment sizes (E6:100 bp & 288 bp; E7:110 bp & 240 bp) to determine size distribution of residual DNA.
  • Real-time qPCR with internal control: Uses FAM-labeled probes for targets and VIC-labeled IPC to monitor inhibition and assay performance.
  • Pre-formulated primer & probe mixes: Supplied primer & probe mixes for each fragment simplify setup and reduce pipetting errors; probes are light-sensitive (protect from light).
  • Ready-to-use standards: Includes quantified HPV E6/E7 DNA Control and detailed serial dilution protocol for building standard curves and absolute quantitation.
  • Validated workflow guidance: Provides recommended plate layouts, qPCR conditions, and data analysis settings for ABI7500 (can be adapted to other instruments).

Applications

  • Quantitation of residual HPV18 E6/E7 DNA (HeLa origin) in biopharmaceutical production
  • In-process monitoring and final product quality control for residual host cell DNA (HPV18-specific)
  • Method validation and assay development for residual DNA size-distribution analysis
  • Sample inhibition assessment and recovery evaluation using IPC

Kit Contents

IPC MIX150 μL ×1 tube; –20 °C, protect from light
E6-100 primer & probe MIX300 μL ×1 tube; –20 °C, protect from light
E6-288 primer & probe MIX300 μL ×1 tube; –20 °C, protect from light
E7-110 primer & probe MIX300 μL ×1 tube; –20 °C, protect from light
E7-240 primer & probe MIX300 μL ×1 tube; –20 °C, protect from light
qPCR Reaction Buffer (NNB001)850 μL × multiple tubes (as supplied); –20 °C
DNA Dilution Buffer (DDB, NND001)1.5 mL ×2 tubes; store at 2–8 °C (if cloudy, heat to 37 °C to clarify)
HPV E6/E7 DNA Control (NNA030)50 μL ×1 tube; –20 °C (check label for concentration before dilution)
* Total: 4 × 100 reactions | Method: qPCR (real-time PCR, absolute quantitation using standard curve)

Attention

• For Research Use Only (not for diagnostic or clinical use).

• Read Material Safety Data Sheets (MSDS) and follow handling instructions; wear protective eyewear, mask, lab coat and gloves.

• Protect primer & probe mixes and IPC MIX from light; store kit components at –20 °C and check expiration date.

• Decontaminate work surfaces, pipettes and tubes (UV 30 minutes recommended) and use dedicated pre- and post-PCR areas to minimize contamination.

• Prepare and run NTC, NCS and IPC controls as instructed. NCS must be processed the same as test samples.

• If IPC Ct for a sample is > ±1.0 compared to NCS IPC Ct, the sample may contain inhibitors; perform recovery testing or further sample cleanup.

• Unused DNA Dilution Buffer (DDB) should be stored at 2–8 °C; if cloudy, warm to 37 °C to clarify.

• Follow instrument-specific software settings and thresholds; example settings provided for ABI 7500 (Manual Ct, threshold 0.02, automatic baseline).

Quality Management & Certifications

Quality System

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QMS (ISO, GMP)

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Quality Advantages

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Quality Control Process

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📂 Technical Resources & Downloads

Frequently Asked Questions (FAQ)

Q1: What is the expected assay runtime?
The qPCR program provided runs activation 95 °C for 10 min plus 40 cycles of 95 °C for 15 s and 60 °C for 60 s, resulting in an approximate total runtime of ~1 hour per run.
Q2: How should I prepare the standard curve?
Thaw the supplied HPV E6/E7 DNA Control, dilute to prepare ST0 at 1×10^8 copies/μL, then perform serial 1:10 dilutions to generate ST1–ST6 (1×10^7 to 1×10^2 copies/μL). Include at least five concentrations across the dynamic range and run in triplicate.
Q3: What should I do if the IPC indicates inhibition?
If sample mean Ct-IPC is significantly higher than NCS Ct-IPC (>±1.0), the sample may be inhibitory. Perform recovery testing (ERC) in the same assay, consider additional sample cleanup or dilution, and re-test.
Q4: What is the assay sensitivity (LOD/LOQ)?
LOD/LOQ are not specified in the user guide. Determine LOD/LOQ, precision and accuracy during in-house validation using the provided standard curve and appropriate validation procedures.

Research Use Only

Research Use Only (RUO). Products are intended for research use only. – This product is intended for laboratory research purposes only and not for clinical or regulatory diagnostic use.

Not intended for use in USDA or FDA regulated diagnostic testing or official compliance testing.

When can I expect my order to ship?

Most orders are filled and shipped within 2-3 business days from the time they are received.

Our standard shipping usually take 2-5 days.

We also provide express shippping for time-sensitive deliveries. 

Email contact@biofargo.com if you have any requirements.

 

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