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In Vitro

Boost oncology drug discovery with XenoBase®, featuring the largest cell line selection and exclusive 3D organoid models. Benefit from OrganoidXplore™ and OmniScreen™ for rapid, in-depth analysis.

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In Vivo

Enhance drug development with our validated in vivo models, in vitro/ex vivo assays, and in silico modeling. Tailored solutions to optimize your candidates.

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Tissue

Experience ISO-certified biobanking quality. Access top biospecimens from a global clinical network, annotated by experts for precise research.

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Biomarkers and Bioanalysis

Leverage our global labs and 150+ scientists for fast, tailored project execution. Benefit from our expertise, cutting-edge tech, and validated workflows for reliable data outcomes.

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Data Science and Bioinformatics

Harness your data and discover biomarkers with our top bioinformatics expertise. Maximize data value and gain critical insights to accelerate drug discovery and elevate projects.

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KRAS

Accelerate innovative cancer treatments with our advanced models and precise drug screening for KRAS mutations, efficiently turning insights into clinical breakthroughs.

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EGFR

Advance translational pharmacology with our diverse pre-clinical models, robust assays, and data science-driven biomarker analysis, multi-omics, and spatial biology.

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Drug Resistance

Our suite integrates preclinical solutions, bioanalytical read-outs, and multi-omics to uncover drug resistance markers and expedite discovery with our unique four-step strategy.

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Patient Tissue

Enhance treatments with our human tumor and mouse models, including xenografts and organoids, for accurate cancer biology representation.

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Bioinformatics

Apply the most appropriate in silico framework to your pharmacology data or historical datasets to elevate your study design and analysis, and to improve your chances of clinical success.

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Biomarker Analysis

Integrate advanced statistics into your drug development projects to gain significant biological insight into your therapeutic candidate, with our expert team of bioinformaticians.

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CRISPR/Cas9

Accelerate your discoveries with our reliable CRISPR solutions. Our global CRISPR licenses cover an integrated drug discovery platform for in vitro and in vivo efficacy studies.

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Genomics

Rely on our experienced genomics services to deliver high quality, interpretable results using highly sensitive PCR-based, real-time PCR, and NGS technologies and advanced data analytics.

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In Vitro High Content Imaging

Gain more insights into tumor growth and disease progression by leveraging our 2D and 3D fluorescence optical imaging.

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Mass Spectrometry-based Proteomics

Next-generation ion mobility mass spectrometry (MS)-based proteomics services available globally to help meet your study needs.

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Ex Vivo Patient Tissue

Gain better insight into the phenotypic response of your therapeutic candidate in organoids and ex vivo patient tissue.

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Spatial Multi-Omics Analysis

Certified CRO services with NanoString GeoMx Digital Spatial Profiling.

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Biomarker Discovery

De-risk your drug development with early identification of candidate biomarkers and utilize our biomarker discovery services to optimize clinical trial design.

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DMPK Services

Rapidly evaluate your molecule’s pharmaceutical and safety properties with our in vivo drug metabolism and pharmacokinetic (DMPK) services to select the most robust drug formulations.

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Efficacy Testing

Explore how the novel HuGEMM™ and HuCELL™ platforms can assess the efficacy of your molecule and accelerate your immuno-oncology drug discovery programs.

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Laboratory Services

Employ cutting-edge multi-omics methods to obtain accurate and comprehensive data for optimal data-based decisions.

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Pharmacology & Bioanalytical Services

Leverage our suite of structural biology services including, recombinant protein expression and protein crystallography, and target validation services including RNAi.

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Screens

Find the most appropriate screen to accelerate your drug development: discover in vivo screens with MuScreen™ and in vitro cell line screening with OmniScreen™.

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Toxicology

Carry out safety pharmacology studies as standalone assessments or embedded within our overall toxicological profiling to assess cardiovascular, metabolic and renal/urinary systems.

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Our Company

Global CRO in California, USA offering preclinical and translational oncology platforms with high-quality in vivo, in vitro, and ex vivo models.

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Our Purpose

Learn more about the impact we make through our scientific talent, high-quality standards, and innovation.

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Our Responsibility

We build a sustainable future by supporting employee growth, fostering leadership, and exceeding customer needs. Our values focus on innovation, social responsibility, and community well-being.

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Meet Our Leadership Team

We build a sustainable future by fostering leadership, employee growth, and exceeding customer needs with innovation and social responsibility.

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Scientific Advisory Board

Our Scientific Advisory Board of experts shapes our strategy and ensures top scientific standards in research and development.

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News & Events

Stay updated with Crown Bioscience's latest news, achievements, and announcements. Check our schedule for upcoming events and plan your visit.

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Career Opportunities

Join us for a fast-paced career addressing life science needs with innovative technologies. Thrive in a respectful, growth-focused environment.

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Scientific Publications

Access our latest scientific research and peer-reviewed articles. Discover cutting-edge findings and insights driving innovation and excellence in bioscience.

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Resources

Discover valuable insights and curated materials to support your R&D efforts. Explore the latest trends, innovations, and expertly curated content in bioscience.

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Blogs

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Flow Cytometry

Accurately immunophenotype cells of interest

Comprehensively Quantify Therapeutic Effects through High Throughput Flow Cytometry Analysis of Various Cell Types

Gain new insight into your drug mechanism of action and PD through robust and in-depth immunophenotyping. Maximize immunotherapeutic benefit, limit unwanted toxicities, and increase your chances of preclinical/clinical success through comprehensively characterizing cells of interest. Use our high quality flow cytometry data to better understand:

  • The immune make-up of relevant organs such as tumor, blood, spleen, and lymph nodes
  • Therapeutic effect on the frequencies and functionality of cell subsets
  • Individual specimen variations and heterogeneity of response

Characterize Complex Immune-Phenotypes and Rare Cells of Interest with our Well-Established Flow Cytometry Platform

  • Characterize cells in high throughput with limited sample volume enabled by Miltenyi gentleMACS™ Dissociators, state-of-the-art equipment including BD FACSCalibur™, BD Accuri™ C6, NovoCyte, Beckman Gallios, BD LSRFortessa™ and BD LSRFortessa X-20 (up to 17 colors) with 96-well plate HTS attachment
  • Overcome tumor complexity with our pre-optimized list of over 20 protocols for tumor tissue dissociation and parent gating strategies
  • Ensure accurate staining, processing, and gating with our stringent controls and manual compensation
  • Eliminate human error through central data processing and analysis facilitated by data transfer software
  • Gain expert guidance from our dedicated FACS team to help determine the right dissociation protocols, panel configurations, gating strategies, etc. for your study
  • Modify reports to fit evolving needs with dynamic and informative reporting packages including a variety of raw data, statistical analyses, observations, actionable recommendations, data visualization, etc.
  • Easily and securely review high quality data and reports through our cloud portal

Our standard flow cytometry panels have been validated in multiple oncology and inflammation in vivo models to provide basic to comprehensive analysis of lymphoid and myeloid cell populations. Models analyzed include syngeneics, tumor homografts (MuPrime™), human target expressing (HuGEMM™/HuCELL™), humanized, GvHD, and peritonitis models.

Customized panels are also available, which undergo thorough validation prior to running your samples. See our standard panels and gating strategy below.

Standard Murine FACS Panel for TIL Analysis

 
Markers Immune Cell Population
CD45+ Total leukocytes
CD45+ CD11b- CD3+ Total T cells
CD45+ CD11b- CD3+ CD4+ CD8+ CD4+ T helper cells
CD45+ CD11b- CD3+ CD4+ CD8+ CD8+ cytotoxic T cells
CD45+ CD11b- CD3+ CD4+ CD8+ Foxp3+ Regulatory T cells
CD45+ CD3- CD11b+ Ly-6C+ Ly-6G- M-MDSC
CD45+ CD3- CD11b+ Ly-6C- Ly-6G+ G-MDSC
CD45+ CD11b+ Ly-6C- Ly-6G- F4/80+ Macrophages
CD11b+ F4/80+ Gr-1+ MDSC
CD45+ CD11b+ Ly-6C- Ly-6G- F4/80+ IA-IEhigh CD206low/- M1 macrophages
CD45+ CD11b+ Ly-6C- Ly-6G- F4/80+ IA-IElow/- CD206+ M2 macrophages
CD45+ F4/80- Ly-6C- Ly-6G- CD3- CD335+ NK cells
CD45+ F4/80- Ly-6C- Ly-6G- CD3dim CD335+ NKT cells
CD19 B cells
PD-1 / PD-L1 Checkpoint inhibitors
Live / Dead (fixable) Live / Dead

Basic panel comprises of 10 colors
Bold markers are included in the comprehensive 16 color panel

Murine TIL Gating Strategy

 

Standard Human FACS Panel for TIL Analysis

 
Markers Immune Cell Populations
mCD45-/hCD45+ Total leukocytes
mCD45-/hCD45+/CD3+ Total T cells
mCD45-/hCD45+/CD3+/CD4+ CD4+ T helper cells
mCD45-/hCD45+/CD3+/CD8+ CD8+ cytotoxic T cells
mCD45-/hCD45+/CD3+/CD4+/Foxp3+ Regulatory T cells
mCD45-/hCD45+/CD19-/CD3-/CD56+ NK
mCD45-/hCD45+/CD19-/CD3+/CD56+ NKT
mCD45-/hCD45+/CD19-/CD3-/CD56-/CD11b+/CD68+ Macrophages
mCD45-/hCD45+/CD19-/CD3-/CD56-/HLA-DR+/CD14+CD16- Classical monocytes
mCD45-/hCD45+/CD19-/CD3-/CD56-/HLA-DR+/CD14+CD16- Intermediate monocytes
mCD45-/hCD45+/CD19-/CD3-/CD56-/HLA-DR+/CD14-CD16- Non-classical monocytes
mCD45-/hCD45+/CD19-/CD3-/CD56-/HLA-DR-/CD33+CD11b+ MDSC
mCD45-/hCD45+/CD19-/CD3-/CD56-/HLA-DR-/CD33+CD11b+/CD14+/CD15- M-MDSC
mCD45-/hCD45+/CD19-/CD3-/CD56-/HLA-DR-/CD33+CD11b+/CD14-/CD15+ P-MDSC
Live / Dead (fixable) Live / Dead

Humanized Mouse TIL Gating Strategy

 

Investigate Mechanism of Action with Functional Assays

 

Characterize the biological responses of immune cells through flow cytometry based functional assays including receptor occupancy, apoptosis, and proliferation assays.

 

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