Direct Detection of NADPH to Measure IDH1 Wildtype Enzymatic Activity

Hydriscreener NADPH Assay directly measures the NADPH produced by IDH1 Wildtype Enzyme. The NADPH measurements allow researchers to effectively determine the activity of the wildtype IDH1 enzyme. The assay provides a powerful tool for screening compound libraries for IDH1 modulators to help find new therapies for disease.

The kit includes the detection reagents required to measure activity. The IDH1 WT enzyme is not included in the inhibitor screening assay kit but can be purchased through BellBrook Labs.

Looking for a detailed protocol for performing the assay in your lab? Download the application note to get the assay up and running in your lab within hours.

IDH1 Wildtype App Note Preview

Download the Application Note: Detection of IDH1 Dehydrogenase Activity with the Hydriscreener™ NADPH Assay

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Applications

  • Measure Enzymatic Activity of wildtype IDH1
  • Screen Compound Libraries for IDH1 Inhibitors
  • Quantify Inhibitor Potency
  • Inhibitor Selectivity Profiling

Features

  • Direct detection of unlabeled NADPH
  • Easy to use, homogenous, one-step format
  • Robust Assay Z’ > 0.8 under initial velocity conditions
  • Red fluorescent readouts minimize compound interference
  • A safe, non-radioactive method

Easy-to-Use, Mix-and-Read, HTS-Ready Assay

Run your enzyme reaction, add Hydriscreener reagents, and read your plates. The IDH1 wildtype activity assay is compatible with 96, 384, and 1536-well formats.

Hydriscreener NADPH Assay Outline with IDH1 Wildtype

Robust Assay Yields Quality Data

Z’ measurements using optimized IDH1 wildtype reaction conditions indicate a robust assay. Robust data like this is vital for sizeable, high-throughput screens that are difficult to complete due to the massive sample quantity. Z’ shown here = 0.88.

Hydriscreener NADPH Z-prime

Detection of NADPH Under IDH1 WT Initial Velocity

The assay demonstrates linearity when raw data is converted to NADPH using a standard curve. We used 50 mM Tris pH 8.0, 5 mM MgCl2, and 0.01% Triton X-100 for the buffer, and ran with 250 µM Isocitrate, and 75 µM NADP at 30°C for 1 hour. The Detection Mix was added and incubated at room temperature for 60 minutes and read with a CLARIOstar plate reader.

IDH1 Wildtype Activity Assay Titration

Hydriscreener NADPH Assay IDH1 Wildtype Enzyme Titration Curve

Linear Response

Hydriscreener NADPH Assay IDH1 Wildtype Enzyme Linear Titration

Screen for Inhibitors & Perform SAR

Hydriscreener Assays are designed to screen compound libraries in a high-throughput format. Follow-up SAR can also be performed using the assay to determine inhibitor potency with ease. Assay conditions for these dose-response assays include 500 pM IDH1 wildtype enzyme, 50 mM Tris pH 8.0, 5 mM MgCl2, and 0.01% Triton X-100 for the buffer, and ran with 250 µM Isocitrate, and 75 µM NADP at 30°C for 1 hour. The enzyme reaction took place for 60 minutes at 30°C.

Pilot Screen With Tocris Library

Hydriscreener NADP Pilot Screen IDH1 Wildtype

Dose-Response Curves from Pilot Screen

SCH202676 HBr

Hydriscreener NADPH Assay Dose-Response Curve with SCH202676 HBr (Production)

IC50 = 0.1049 μM

Bay-11 7085

Hydriscreener NADPH Assay Dose-Response Curve with BAY 11-7085 (Production)

IC50 = 0.5452 μM

SW 033291

Hydriscreener NADPH Assay Dose-Response Curve with SW 033291 (Production)

IC50 = 11.30 μM

IDH1 Wildtype Enzyme Assay Services

Interested in moving your program forward but don’t want to bring an assay in-house? Our scientists can help! BellBrook scientists will use their extensive biochemistry and enzymology expertise to work with you and accelerate your IDH1 program.

Lead Discovery Services Include:
  • Inhibitor Screening

    To identify or confirm activity with the target.

  • Inhibitor Potency Profiling

    Dose-response with target and/or related proteins. Fast IC50 results.

  • Residence Time Measurements

    Determination of koff using ‘jump dilution’ enzymatic assay method.

  • Mechanism of Action Studies

    Kinetic analysis to define the mode of inhibition.

Contact A Scientist About Services Today

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What’s Included In The Hydriscreener Kit

Hydriscreener NADPH Assay
1K10K
ComponentPart #QtyPart #Qty
Converting Enzyme23911 Bottle239110 Bottles
HydriFluor Solution239420 mL23945 x 20 mL
NADPH23924 x 1 Tube239240 x 1 Tube
NADP23932 x 1 Tube239320 x 1 Tube
Stop & Detect Buffer B, 10X20271 mL203210 mL

Additional Materials You Will Need

ComponentNotes
Ultrapure Nuclease Free WaterSome deionized water systems are contaminated with enzymes that can degrade both nucleotide substrates and products, reducing assay performance. Use nuclease free water such as: Invitrogen Part # AM9930
EnzymeThe Hydriscreener NADPH Assay is validated for use with purified dehydrogenase enzymes such as IDH1 Enzyme which is available from BellBrook as a stand-alone product (2395, 2396).
Assay PlatesYou can purchase assay plates directly through BellBrook Labs.

It is important to use assay plates that are entirely black with a nonbinding surface. We recommend Corning® 384-well plates (Cat.# 4514). The suggested plate has a square well top that enables easier robotic pipetting and a round bottom that allows good Z’ factors. It has a recommended working volume of 15–20 µL.

Resources

Find the right resources to help you get to your solution faster.

Contact Us to Learn More

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“Some CROs reserve their best teams for high profile customers. If you’re not right there with them you get less experienced teams… BellBrook understands enzyme kinetics, so it made that part of the project so much easier. The larger CRO didn’t seem to have the expertise we needed in this area.”

“The ADP assay is a great choice for measuring activity for any ADP-generating enzyme in both real time and endpoint formats. The universal detection system has been very useful for more challenging targets.”

“Excellent blend of simplicity & good science. Excellent technical support”

“The assay itself has good reproducibility and provides a clear readout on our enzyme activity. The most important piece, however, is the level of attention to our project and rapid turnaround time. The staff at BellBrook knows what they are doing.”

“The Transcreener AMP/GMP Assay is extremely straightforward to use and is very sensitive. In a UV-based enzyme assay I needed 1 µM enzyme to see a decent signal; however using the Transcreener AMP assay I only need 10 nM. Also, BellBrook Labs have been very helpful with the assay development. Their representative has been very willing to quickly help me get my assay up and running.”

“Through the process of developing and validating an assay for HTS applications, I generated a very nice data package of robust high quality data.”