The Complexity of the Gastrointestinal Tract: A Multilayered Challenge for Drug and Biomarker Studies
The gastrointestinal (GI) tract is a highly specialized and dynamic system, playing a central role in digestion, absorption, immune response, and microbiome interaction. From the stomach to the small intestine (duodenum, jejunum, ileum) and the large intestine (colon, rectum), each segment presents unique physiological and structural characteristics that influence drug delivery and disease progression.
Aliri’s spatial imaging capabilities allows you to understand drug behavior and biomarker expression across the four main layers of the intestinal wall.
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Oligonucleotide Hybridization LCMS Workflows and Probe Optimization
In this scientific poster recently presented at EBF Open Symposium, we investigated the biodistribution and potential toxicity of lipid nanoparticles (LNP1 and LPN2), which are crucial carriers for mRNA-based treatments after administration to male and female mice, analyzing their distribution in whole-body carcasses and specific organs using MALDI-MSI.
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Mapping mRNA–Lipid Nanoparticle Distribution in Mouse Whole Body and Organs by MALDI-MSI
In this scientific poster recently presented at EBF Open Symposium, we investigated the biodistribution and potential toxicity of lipid nanoparticles (LNP1 and LPN2), which are crucial carriers for mRNA-based treatments after administration to male and female mice, analyzing their distribution in whole-body carcasses and specific organs using MALDI-MSI.
Download our poster to learn more.
Ring Trial Study Results for Oligonucleotides Prove Hybridization LC-MS Approach Superior to LBA in Achieving Lower Detection Limits and Higher Specificity
Aliri was recently one of 10 labs to participate in the Oligonucleotide Ring Trial, in which industry experts joined together to evaluate the effectiveness of LC-MS, LBA, and qPCR when quantifying the concentrations of oligonucleotide in biological samples. This first-of-its-kind study aimed to give clarity to drug developers about the methodology best suited for future development programs. Specifically, the Ring Trial focused on three types of oligonucleotides, an ASO (Fomivirsen), a GalNAc-siRNA (Lumasiran), and a PMO (Viltolarsen).
Troy Voelker, Sr. Lab Director at Aliri and Chair of the AAPS Oligonucleotide Discussion Group, led the LC-MS method development of the PMO (Viltolarsen), which was analyzed using three mass spectrometry platforms: a QExactive, a time-of-flight (TOF), and a triple quadrupole instrument. In this presentation, he reveals exciting data that proves hybridization LC-MS superior to LBA in achieving lower detection limits and higher specificity.
Download the presentation to read the study findings.
Enabling Clinical Adoption of Omics: Fit-for-Purpose Validation and a Spatial Biomarker Case Study
Over the past two decades, omics technologies have steadily expanded from discovery research into translational and clinical development, offering unprecedented insights into biology, disease mechanisms, and therapeutic response. Advances in genomics, transcriptomics, proteomics, metabolomics, and, more recently, spatial and multi-omics platforms have created powerful opportunities to identify predictive biomarkers, refine patient stratification, and accelerate drug development. The added value of omics lies in their ability to capture complex, system-level biology that traditional single-analyte assays cannot address, thereby bridging the gap between exploratory research and precision medicine.
Yet this rapid progress has also highlighted a critical challenge: how to validate omics data in a way that is scientifically rigorous but also practical. Current analytical validation paradigms were largely developed for conventional assays such as ELISA or qPCR, which measure one or a handful of targets at a time. Applying the same frameworks directly to high-dimensional omics assays often results in processes that are overly burdensome, expensive, and poorly aligned with the dynamic nature of omics platforms.
Moving forward, the field needs more efficient and adaptive validation processes, aligned with the specific purpose of each omics application. This involves applying full rigor when data will inform regulatory submissions or clinical decisions, while using streamlined, fit-for-purpose approaches for exploratory research and mechanistic studies.
In this presentation, Aliri R&D Director and Spatial-Omics Expert, Corinne Ramos, Ph.D., illustrates these challenges and opportunities through a spatial multi-omics use case, where paired patient biopsies were profiled with spatial transcriptomics and proteomics to uncover mechanistic insights, identify predictive biomarkers, and generate regulatory-ready evidence for clinical development.
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Maximizing Reproducibility and Sensitivity in qPCR for Detecting Transcripts Over a Broad Dynamic Range in Response to Anti-PD-1 Therapy
This study aims to optimize and validate a qPCR workflow for the reproducible and sensitive quantification of immune checkpoint transcripts (PD-1,PD-L1, CTLA-4) in FFPE lung cancer tissues. By refining tissue preparation, RNA input, and assay conditions, we establish a robust method for detecting gene expression across a broad dynamic range, enabling reliable assessment of immunotherapy response and supporting biomarker-driven patient stratification.
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Development and Validation of a Sensitive LC-MS/MS Method for the Quantification of SGR-1505 in Human Plasma to Support Clinical Pharmacokinetic Studies
MALT1 is a key mediator of NF-κB signaling and an emerging therapeutic target in B-cell malignancies and autoimmune diseases. SGR-1505, a potent MALT1 inhibitor, is being clinically evaluated for its therapeutic potential. In this study, we developed and validated a reliable and high-throughput LC-MS/MS method for the quantitation of SGR-1505 in human plasma (K₂EDTA) to support clinical pharmacokinetic studies. This work exemplifies the critical role of CRO-led bioanalysis in bridging early discovery and clinical development of emerging therapeutics.
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Development of Total ASO method in Mouse Plasma and Tissues Using LC-FD and LC-MS Platforms
Bioanalytical methods are needed to analyze protein conjugated antisense oligonucleotides (POCs) to accurately quantify the active antisense oligonucleotide (ASO) payloads, assess its pharmacokinetics and biodistribution in plasma and tissues, and ensure patient safety by evaluating potential immunogenicity and toxicity. Because the conjugate, the free ASO, and the linked ASO fragment can all be present, specialized techniques are required to differentiate and quantify these components, which is essential for supporting the development of these complex biotherapeutics. The unique properties of POCs present significant analytical challenges that necessitate specialized methods.
We set out to develop a methodology for quantifying total ASO in POCs that could be universally applied across similar POCs. The
study compared mass spectrometry and fluorescence detection platforms to determine optimal sensitivity, selectivity,
and adaptability. Additionally, it aimed to establish a single extraction method suitable for both plasma and tissue
analysis.
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Precision Bioanalysis for the Development of Dermal Therapies
In this application note, we outline next-generation spatial bioanalysis and spatial omics approaches for detecting and quantifying drug substance within dermal tissue, including human skin, reconstructed skin, nails, tape strips, and hair.
Download the application note to learn more.
Ophthalmic Support
Aliri has extensive experience supporting the precision bioanalysis of ophthalmic therapies including:
- Method demonstration, development, optimization, fit-for-purpose & GLP validation, and regulatory sample analysis
of ocular tissue and supporting matrices - Challenging large and small molecule ophthalmic drugs, including, prostaglandin analogs, peptides,
hormones, polysaccharides, allergen biomarkers, siRNA, oligonucleotidesWhole-eye spatial imaging using Quantitative
Mass Spectrometry Imaging (QMSI) to visually understand how your molecule performs in the microenvironment.
Download the fact sheet to learn more.

