Combating Emerging Threats: Accelerating Broad-Spectrum Antivirals for BARDA’s SMART Initiative

The Administration for Strategic Preparedness and Response (ASPR) and the Biomedical Advanced Research and Development Authority (BARDA) have launched the SMART Antiviral Prize, a multi-stage, $100+ million initiative designed to close critical gaps in the national therapeutic pipeline. Focused on developing novel, broad-spectrum, small-molecule antivirals, the program explicitly targets high-consequence pathogens capable of causing severe morbidity and mortality.

Advancing Preparedness Together: Partner with IBT Bioservices for the SMART Antiviral Initiative

For innovators navigating the SMART Antiviral framework—from the initial Concept Stage through Stage 1 (Hit-to-Lead), Stage 2 (Lead Optimization), and ultimately Stage 3 & 4 (In-vivo validation and IND Readiness)—success relies on generating robust, reproducible preclinical data. Securing early “go/no-go” datasets and advancing towards Investigational New Drug (IND) submission requires an accelerated, highly specialized testing infrastructure backed by an experienced CRO partner.

Ready to de-risk your BARDA application? Speak with IBT Bioservices' infectious disease experts today to map out your preclinical timeline.

The Challenge: Validating MCM Platforms Against Priority Pathogens

To establish a versatile Medical Countermeasure (MCM) ecosystem, ASPR and BARDA require therapeutic candidates to demonstrate efficacy against a diverse panel of Public Health Emergency Medical Countermeasures Enterprise (PHEMCE) priority viral families. The pathogens prioritized for MCM platform validation present distinct transmission routes and complex clinical syndromes that must be addressed during therapeutic development:

Pathogens such as Dengue Virus (DENV) and West Nile Virus (WNV) are primarily mosquito-borne, driving severe hemorrhagic and neurologic syndromes.

Mosquito-borne viruses like Chikungunya (CHIKV) present with debilitating arthritogenic conditions

The priority list also encompasses Arenaviridae (Lassa Fever Virus; LASV), Paramyxoviridae (Nipah Virus; NiV), and Coronaviridae (MERS-CoV). These families cause severe pulmonary, neurologic, and hemorrhagic diseases, often with respiratory transmission potential.

BARDA’s framework also includes limited H2H pathogens like Andes Virus (ANDV) and tick-borne threats such as Crimean-Congo Hemorrhagic Fever Virus (CCHFV).

The overarching goal of the SMART campaign is to establish broad-spectrum platforms capable of rapidly adapting to unknown, future emergent viruses (Threat X).

IBT Bioservices’ End-to-End Capabilities for the SMART Pipeline

Aligning with the rigorous milestone requirements of the SMART Antiviral Prize, IBT Bioservices provides a comprehensive, milestone-driven preclinical pathway. Our established infrastructure allows sponsors to seamlessly transition from early hit validation to definitive IND-enabling evaluations.

1. Target Characterization & Assay Development: The foundation of a successful broad-spectrum application is proving reproducible cell-based antiviral activity across multiple viral species.

  • Microneutralization & PRNT Assays: We can deploy high-throughput plaque reduction neutralization tests (PRNT) and microneutralization/ cytopathic (CPE) assays adapted for broad viral panels to establish baseline IC50 metrics.
  • Epitope Mapping & Binding Affinity:  Leveraging Biolayer Interferometry (BLI) and Octet high-throughput biosensor platforms, we can perform real-time kinetic analyses to quantitatively characterize molecular binding affinity, association/dissociation rates (kassociation, kdissociation, and KD), and precise host-pathogen or drug-target interactions.
  • Broad-Spectrum Pseudoviruses & VLPs: To ensure safe, high-throughput screening during early discovery, we can manufacture and test validated pseudoviruses and virus-like particles (VLPs) accurately mimicking viral entry and surface antigenicity of Togaviridae and Flaviviridae targets

2. Lead Optimization & Platform Validation: Stage 1 of the SMART program requires developers to identify a promising chemical series and build a robust “go/no-go” dataset.

  • Hit-to-Lead Metrics: We validate candidates against strict IC50 and therapeutic index thresholds across specific breadth panels.
  • Host-Cell Interaction Studies: Detailed profiling of viral replication kinetics ensures the candidate directly impacts the viral lifecycle rather than functioning solely via immunomodulation.
  • Early ADME/PK Profiling: We provide the foundational pharmacokinetic and bioavailability data required by BARDA to justify the transition into late-stage lead optimization.

3. Broad-Panel Evaluation & In Vivo Efficacy: Validating a true broad-spectrum antiviral requires comprehensive evaluation across a wide panel of viral families before culminating in definitive in vivo proof of concept for Phase I clinical trials.

  • Multi-Family Broad-Panel Evaluation: Moving beyond single-target assays, we assess therapeutic candidates across a comprehensive breadth panel encompassing multiple high-consequence viral families—including Flaviviridae, Togaviridae, Arenaviridae, Paramyxoviridae, and Coronaviridae—to rigorously validate broad-spectrum antiviral activity and cross-protection.
  • Specialized In Vivo Models: We operate established AG129 and BALB/c mouse models specifically validated for Dengue and other Flaviviridae, providing critical data on the prevention of disease progression and reduction in viral load. Alternatively, if your facility maintains its own vivarium, IBT Bioservices can directly deploy validated AG129 animals to your laboratory to support internal testing workflows.
  • High-Containment (BSL-3) Testing: For priority Emerging Infectious Diseases (EID) pathogens requiring maximum containment—such as MERS-CoV, NiV, and LASV —we leverage our extensive deep scientific experience and e stablished BSL-3 partner network to coordinate and oversee high-containment in vitro and in vivo efficacy evaluations seamlessly. Furthermore, we maintain specialized BSL-2-compatible assay platforms and provide high-quality research-use reagents, including purified viral glycoproteins, pseudoviruses and well-characterized antibodies, to jumpstart robust assay development and standardization for your platform.

3. Candidate Selection & IND-Enabling Studies: To culminate the SMART program journey, candidates must complete rigorous safety and toxicology profiling suitable for FDA regulatory review. All in vivo evaluations are supported by our dedicated infrastructure designed for strict regulatory compliance

  • State-of-the-Art Vivarium: Our in vivo efficacy and safety studies are conducted within our fully equipped vivarium space that maintains AAALAC and OLAW accreditation, alongside USDA certification, ensuring the highest ethical standards for animal welfare and robust data reliability. Additionally, we have established experience working directly with ACURO to support compliance for DOD contracts.
  • Dose Optimization: Final Pharmacokinetic (PK) and Biodistribution profiles are generated to determine optimal dosing regimens for future clinical applications. These evaluations can be further enhanced by our advanced in vivo imager, providing real-time, non-invasive tracking of therapeutic dissemination and localization.

Advancing Preparedness Together

The accelerated timeline and demanding scientific criteria of the BARDA SMART Antiviral Prize require a preclinical partner with deep infectious disease expertise and an established assay infrastructure. By providing validated models, specialized reagents, and comprehensive IND-enabling services, IBT Bioservices de-risks the development pathway for broad-spectrum therapeutics. 

Beyond our scientific capabilities, we understand the unique operational demands of government-funded initiatives. When you partner with us, your program is supported by a dedicated Project Manager (PM) to ensure seamless execution and keep your deliverables strictly on time. We can facilitate consistent bi-monthly calls to maintain transparent communication and agile decision-making. Furthermore, our team brings proven, hands-on experience navigating complex BARDA reporting, milestone tracking, and billing requirements—alleviating the administrative burden so your team can focus entirely on advancing the science.

To discuss how IBT Bioservices can accelerate your MCM platform, seamlessly integrate with your SMART Antiviral application, and structure your preclinical roadmap, contact us today!

Contact Us Today to Accelerate your BARDA SMART Program

Partner with IBT Bioservices to de-risk your antiviral development and validate your medical countermeasure platforms. Our team is ready to help you customize a milestone-driven study design that meets strict ASPR and BARDA requirements.

I am preparing a BARDA SMART Antiviral proposal or milestone study

I want to evaluate broad-spectrum efficacy across viral panels

I want to explore Flaviviridae/ Dengue animal models

I want to review PK and bio distribution services

I need support with government contracting and compliance (ACURO, AAALAC)

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