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Lead Discovery Services
BioAssay Systems has developed a range of high-throughput assays for drug targets. Our lead discovery services include, but are not limited to, hit-to-lead profiling and structure-activity relationship (SAR) studies.
Enzyme Inhibitor Screening Services
Our enzyme inhibitor screening services are optimized for modern lead discovery. Examples include evaluation of test compounds in regards to their activating (EC50) or inhibitory (IC50) effects on target enzyme(s) of interest, and determination of their mode of action.
- Kinase Inhibitor Screening
- Arginase Inhibitor Assay
- PTP1b Inhibitor Assay
- Monoamine Oxidase Inhibitor Assay
- Acetylcholinesterase Inhibitor Assay
- Aldehyde Dehydrogenase Inhibitor Assay
- Farnesyl Transferase Inhibitor Assay
- Poly(ADP-Ribose) Polymerase (PARP) Inhibitor Assay
- Nitric Oxide Synthase Inhibitor Assay
- Urokinase Inhibitor Assay
Other Enzymes
- Acid Phosphatase
- Aconitase
- Alkaline Phosphatase
- Amylase
- Aspartate Transaminase
- ATP-Citrate Lyase
- Catalase
- Creatine Kinase
- Diamine Oxidase
- Fumarase
- Glucose Oxidase
- Glucose-6-Phosphate Dehydrogenase
- Glutamate Dehydrogenase
- Glutathione Peroxidase
- Glutathione Reductase
- Glutathione S-transferase
- Glyoxalase
- Invertase/Sucrase
- Isocitrate Dehydrogenase
- Lactate Dehydrogenase
- Lipase
- Malate Dehydrogenase
- Mannosidase
- Myeloperoxidase
- Neuraminidase
- Phosphatase
- Phospholipase D
- Pyruvate Kinase
- Sorbitol Dehydrogenase
- Superoxide Dismutase
- Urease
- Xanthine Oxidase
Signal Transduction and Drug Discovery
BioAssay Systems’ signal transduction and drug screening services are for evaluating changes in cell signaling as a result of exposure to test compounds. The services allow the screening of phosphorylation status modulators in important cell signalling pathways. Our examples include but not limited to the following:
We routinely determine the test compound’s reactivity with different cell species, phosphorylation kinetics and the IC50 of activation or inhibition of the cellular pathway. Learn more.
Please email or call us at +1-510-782-9988 ext 2 to discuss your service needs.
We routinely determine the test compound’s reactivity with different cell species, phosphorylation kinetics and the IC50 of activation or inhibition of the cellular pathway. Learn more.
Please email or call us at +1-510-782-9988 ext 2 to discuss your service needs.
ADMET
BioAssay System’s ADMET (Absorption, Distribution, Metabolism, Excretion, and Toxicity) services are ideal for early stage drug discovery and specialized for evaluating test compounds as drug candidates. Screen for leads by testing for absorption, distribution, metabolism, excretion, and toxicity.
Absorption/Solubility: The solubility of a drug compound plays a significant role in absorption and is an important factor to consider during development. Quantitative measurement of compound solubility is an ideal early test to perform when screening for potential drug candidates. Distribution: Most drugs must pass through membrane barriers to reach their target. We offer quantitative measurement of compound permeability (More details).
Please email or call us at +1-510-782-9988 ext 2 to discuss your service needs.
Absorption/Solubility: The solubility of a drug compound plays a significant role in absorption and is an important factor to consider during development. Quantitative measurement of compound solubility is an ideal early test to perform when screening for potential drug candidates. Distribution: Most drugs must pass through membrane barriers to reach their target. We offer quantitative measurement of compound permeability (More details).
- Blood Brain Barrier (BBB) Permeability Inquire
- Gastrointestinal (GI) Permeability Inquire
- Skin Permeability Inquire
Please email or call us at +1-510-782-9988 ext 2 to discuss your service needs.
Mitochondrial Membrane Potential
Mitochondrial membrane potential is an key component of cell’s bioenergetics. We have successfully developed high-throughput assays and offer services for mitochondrial membrane potential in:Please email or call us at +1-510-782-9988 ext 2 to discuss your service needs.
Select Publications by BioAssay Systems' Scientists
Rommel Mallaria, Elissa Swearingenb, Wei Liu, Arnold Ow, Stephen W. Young and Shu-Gui Huang* (2003) “A Generic High- throughput Screening Assay for Kinases: Protein Kinase A as an Example”. J. Biomol. Screen. 8: 198-204.
Catherine A. Hong, Elissa Swearingen, Rommel Mallari, Xiong Gao, Zhaodan Cao, Anne North, Stephen W. Young and Shu-Gui Huang* (2003) “Development of A High-Throughput Time-Resolved Fluorescence Resonance Energy Transfer Assay for TRAF6 Ubiquitin Polymerization”. Assay and Drug Development Technologies 1: 175-180.
Shu-Gui Huang* (2002) “Development of A High-throughput Screening Assay for Mitochondrial Membrane Potential in Living Cells”. J. Biomol. Screen. 7: 383-389.
Ellyn Farrelly, M. Catherine Amaral, Lisa Marshall and Shu-Gui Huang* (2001) A high-throughput assay for mitochondrial membrane potential in permeabilized yeast cells. Analytical Biochemistry 293(2):269-276.
Tony Smith, John Chan, Donna Oksenberg, Roman Urfer, Dave Wexler, Arnie Ow, Liping Gao, Alanna McAlorum, and Shu-Gui Huang* (2004). A High-Throughput Turbidometric Assay for Screening Inhibitors of Protein Disulfide Isomerase Activity. J. Biomol. Screen. 9(7): 614-620.
David S. Wexler, Liping Gao, Francisco Anderson, Arnold Ow, Laszlo Nadasdi, Alanna McAlorum, Roman Urfer, and Shu-Gui Huang* (2005). “Linking Solubility and Permeability Assays for Maximum Throughput and Reproducibility”. J. Biomol. Screen. 10(4): 383-390.
Shu-Gui Huang (2005) “Progress from HTS to HTL: Current Strategies in Drug Lead Discovery” Review article in Trends in Pharmaceutical Research 1: 5-10.
David S. Wexler, Shu-Gui Huang, Roman Urfer (2004). “Replumbing the Pipeline: A small, biopharmaceutical company’s strategy for integrating lead optimization and ADMET screening”. Current Drug Discovery, May 2004: 35-38.
Songzhu An, Gene Cutler, Jack Jiagang Zhao, Shu-Gui Huang, Hui Tian, Wanbo Li, Lingming Liang, Mike Rich, Amy Bakleh, Juan Du, Jin-Long Chen and Kang Dai (2001) Identification and Characterization of a melanin-concentrating hormone receptor. Proc. Natl. Acad. Sci. 98: 7576-7581.
Shu-Gui Huang, Donna Oksenberg, Roman Urfer (2005). “High-throughput Turbidometric Assay for Screening Inhibitors of Protein Disulfide Isomerase Activity”. US 6,977,142.
Customer Testimonials
"The guys at BioAssay Systems know their science! I had to develop a bioassay for our company and Robert was very quick to respond to keep us up to date. They are knowledgeable and very resourceful. They directed us to one of the bulk suppliers that could give us a really good deal on our active ingredient. They keep very detailed records for our research needs. I would recommend working with BioAssay Systems on your assay development projects!"
"It is a pleasure working together with BioAssay Systems. I brought samples to their Hayward location and received the results in less than 24 hr. The discussion with Robert Z was courteous, open, and with a depth of knowledge. Robert has a PhD from Stanford. Also, Frank Huang, the CEO, had sufficient scientific curiosity to try out our cleanser and provide feedback! This is beyond the call of customer relations. BioAssay Systems is a company with a lot of expertise and a friendly, responsive approach to problem solving. I will enthusiastically continue to work with them to carry out our research."
"I would like to show my appreciation to the Bioassay Systems service team. We are developing an assay to measure the change in lactate concentration of single cell samples using fluorescent microscopy. The BioAssay Systems team was quite helpful in assisting us to optimize their fluorescent L-Lactate assay kit for our unique experimental set-up. The BioAssay Systems team is always friendly and knowledgeable. We know that we can rely on them for fast and professional service."
"While developing biodegradable coatings for Drug Eluting Stents I worked with Bob to develop an accurate, precise and sensitive assay for determining the amount of polymer remaining in tissue. It was a pleasure to work with Bob and his team, they are very thorough, they understand the science very well and they always deliver on time and at the right price. I would highly recommend anyone using BioAssay Systems services in the future."
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