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  • Inhaled Lipid Nanoparticles: A Transformative Pulmonary Delivery Platform for Cystic Fibrosis Therapy

  • 1 The Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, 1 University Plaza, Brooklyn, New York 11201, USA
    2 College of Professional Studies, Northeastern University, 360 Huntington Ave, Boston, MA 02115, USA
    3,5,6 Department of Chemistry Pittsburg State University, 1701 S Broadway, Pittsburg, KS 66762. 
    4 University of Wisconsin-Madison School of Pharmacy, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI 53705
     

Abstract

Cystic fibrosis (CF) is a debilitating autosomal recessive genetic disorder characterized by defective CFTR protein function, leading to viscous mucus accumulation, chronic pulmonary infections, and progressive lung damage.[2] Conventional oral or intravenous therapies for CFTR modulators (e.g., lumacaftor/ivacaftor) and antibiotics suffer from limited lung bioavailability, systemic toxicity, and poor patient adherence. Inhaled lipid nanoparticles (LNPs) represent an innovative drug delivery system that enables targeted pulmonary deposition, enhanced mucus penetration, sustained release, and reduced off-target effects.[24] This review comprehensively examines LNP classifications (liposomes, solid lipid nanoparticles [SLNs], nanostructured lipid carriers [NLCs], and hybrids), formulation strategies, physicochemical characterization, and aerosolization techniques. Preclinical evidence demonstrates LNPs restoring up to 55?TR chloride transport via mRNA delivery and eradicating pseudomonas aeruginosa biofilms with encapsulated antibiotics.[21] Clinical trials, including approved formulations like Arikayce® (liposomal amikacin), validate safety and efficacy. Challenges in scalability, mucus barriers, and regulatory approval are discussed alongside future directions in personalized, combination therapies. Inhaled LNPs hold transformative potential to improve CF outcomes and quality of life

Keywords

Cystic fibrosis, Inhaled lipid nanoparticles, CFTR modulation, Pulmonary drug delivery, Mucus penetration.

Introduction

Cystic fibrosis (CF) affects over 70,000 individuals worldwide, primarily Caucasians, with a median life expectancy of ~40 years despite CFTR modulator advancements. Mutations in the CFTR gene (>2,000 identified, F508del in ~50% of cases) impair chloride transport, dehydrating airway surface liquid (ASL) and promoting thick mucus, impaired mucociliary clearance, recurrent infections [1-3], inflammation, and complications like bronchiectasis and airflow obstruction.

Current therapies include oral CFTR correctors (lumacaftor) and potentiators (ivacaftor), which synergistically enhance chloride transport but are limited to tablet forms, resulting in suboptimal lung concentrations and systemic side effects. Targeted pulmonary drug delivery (TPDD) via inhalation circumvents first-pass metabolism, achieves high local drug levels, and minimizes toxicity.[4-7] LNPs—biocompatible, biodegradable carriers—excel in encapsulating hydrophobic/hydrophilic agents, nucleic acids, and proteins for sustained release.

This review synthesizes LNP mechanisms in CF, types, formulation/ characterization, preclinical/ clinical data (including pharmacokinetics/ biodistribution), marketed products, patents, and prospects, drawing from recent studies [29]

2. Pathophysiology of Cystic Fibrosis and Unmet Needs

CFTR mutations are classified into five classes: I (no synthesis), II (misfolding, e.g., F508del), III (gating defects), IV (conductance issues), and V (reduced synthesis).[21-22,28] Defective CFTR reduces ASL chloride secretion and heightens sodium absorption via ENaC, thickening mucus and fostering bacterial biofilms, oxidative stress, and inflammation.

Table 1: Classification of CFTR Mutation

Class

Defect

Examples

Prevalence

Therapeutic Implications

  1.  

No protein synthesis (nonsense/ stop codons)

G542X, W1282X

~10%

Gene therapy (mRNA, read-through agents)

  1.  

Misfolding/ trafficking defect

F508del

~50%

Correctors(e.g., lumacaftor)

  1.  

Gating defect

G551D

~4%

Potentiators (e.g., ivacaftor)

  1.  

Conductance defect

R117H

~3%

Potentiators

  1.  

Reduced synthesis

3849+10kbC>T

~3%

mRNA amplification

  1.  

Reduced stability (expanded class)

Various

Variable

Stabilizers

Daily treatment burdens include nebulized antibiotics, mucolytics (dornase alfa), and modulators, with infection risks, malnutrition, and high costs (~$300,000/year for modulators). Unmet needs: curative gene therapies, affordable options, and complication management. Inhaled LNPs address these by enabling direct lung delivery of modulators, antibiotics, siRNA (e.g., anti-ENaC), and mRNA

Figure 1: CFTR Mutation Classes Venn Diagram [32]

Venn diagram showing overlapping defects in major mutations (e.g., ΔF508 as II–III–VI).

3. Lipid-Based Nanoparticles: Characteristics and Advantages

LNPs are vesicular systems self-assembled from amphiphilic lipids, encapsulating therapeutics in aqueous cores or bilayers. Key advantages in CF:

Targeted Lung Deposition: <3 μm aerosols penetrate deep alveoli; mucus-penetrating designs (neutral zeta potential -10 to +10 mV) overcome barriers.

Drug Protection/Stability: Shield from enzymatic degradation; sustained release prolongs efficacy (e.g., amikacin SLNs reduce dosing frequency).

Reduced Toxicity: Localized delivery minimizes systemic exposure (e.g., nephrotoxicity from aminoglycosides).

Mucus Penetration: PEGylation or deformable liposomes (ethosomes/transferosomes) enhance diffusion.

Versatility: Encapsulate small molecules (ivacaftor), nucleic acids (CFTR mRNA), peptides.

Combination Therapy: Co-deliver modulators/antibiotics for synergy.

Biocompatibility: Low immunogenicity; GRAS lipids (DPPC, cholesterol).

Challenges: Limited loading for SLNs, gelation, drug leakage.

3.1 Types of LNPs

Figure 2: Schematic of LNP Types for Drug Delivery[33]

Illustration of liposomes, SLNs, NLCs, lipid nanoemulsions, and hybrid LNPs.

Type

Structure

Size (nm)

Key Features

CF Applications

Liposomes

Phospholipid bilayers

80–300

High EE (>99%); sustained release

Tobramycin, gentamicin, ciprofloxacin; biofilm penetration

SLNs

Solid lipid matrix

10–1000

Controlled release; biocompatibility

Amikacin, colistin; anti-P. aeruginosa

NLCs

Solid + liquid lipids

100–400

Higher loading; prevents expulsion

Tobramycin, ivacaftor/ lumacaftor; mucus penetration

Hybrid NPs

Lipid-polymer (e.g., PLGA core + DPPC shell)

100–150

Muco-inertia; gene silencing

siRNA (anti-NFκB, ENaC); PNA for CFTR modulation

Others

Ethosomes, virosomes, archaeosomes, exosomes

20–200

Flexibility, stability, natural targeting

Baicalein (mucus-penetrative chitosan NPs); mRNA exosomes

4. Formulation, Design, and Characterization

4.1 Manufacturing Techniques

Thin-Film Hydration: For liposomes (e.g., cefoperazone MLVs with DPPC:cholesterol 7:3).

Hot Homogenization/ Emulsification: SLNs/NLCs (e.g., amikacin SLNs at 70°C).

Solvent Injection: Nucleic acid LNPs (ionizable lipids + cmRNA).

Spray Drying: Lipid-coated microparticles for DPIs.

Cryoprotectants (mannitol/trehalose) ensure stability post-lyophilization.

Lipid selection: Phospholipids (DPPC/DSPC for rigidity), cholesterol (stability), surfactants (Tween 80 for dispersion). Excipients: PEG for stealth, ligands for targeting.

4.2 Characterization

Size/Distribution: DLS, NTA (hydrodynamic radius); TEM/SEM/Cryo-TEM for morphology.

Zeta Potential: Electrophoretic light scattering (neutral for mucus penetration).

EE: UV/HPLC; >80–99% typical.

Stability: DSC for phase transitions; size/zeta over time.

Aerosol Performance: Next Generation Impactor (NGI); fine particle fraction >50% for deep lung.

Table 2: Key Formulation Parameters for Inhaled LNPs

Parameter

Optimal Range

Impact on CF Delivery

Particle Size

100–300 nm

Enhances alveolar deposition; mucus penetration

Zeta Potential

-10 to +10 mV

Reduces electrostatic trapping in mucus

EE (%)

>80

Maximizes drug payload for sustained release

Polydispersity Index

<0.3

Ensures uniform aerosolization

pKa (Ionizable Lipids)

6.5–7.6

Promotes endosomal escape in lung epithelia

5. Preclinical Efficacy, Pharmacokinetics, and Biodistribution

LNPs achieve high lung retention (>50% dose), prolonged release (up to 48–72 h), and uniform biodistribution.

Antibiotics: Liposomal amikacin reduces *P. aeruginosa* CFU by 2 logs; SLNs couple with lactose for alveolar uptake.

CFTR Modulators: PEG-NLCs with lumacaftor/ivacaftor restore ion transport in murine models; reduce fibrosis.

Nucleic Acids: LNP-cmCFTR (nasal) recovers 55% chloride efflux (14 days); siRNA hybrids silence ENaC 50% (1 week).

PK/BD: Nebulized NLCs show broad pulmonary distribution, minimal systemic spillover; exosomes enhance mRNA/protein delivery 2–3-fold vs. synthetic liposomes.

Table 3: Key Preclinical Studies (Expanded)

Drug

LNP Type

Outcomes

PK/BD Highlights

Amikacin

Liposomes

2-log CFU reduction; prolonged lung retention

>50% lung dose at 24 h

Ivacaftor/ Lumacaftor

PEG-NLC

Improved chloride transport; fibrosis reduction

70% alveolar retention

CFTR mRNA

LNPs

55% CFTR restoration (14 days)

Nasal: 55% efflux recovery

siNFκB

Hybrid NPs

Local anti-inflammatory; mucus penetration

30–50% ENaC silencing (1 week)

6. Clinical Trials and Marketed Formulations

Approved: Arikayce® (liposomal amikacin, 2018) for MAC infections in CF; reduces exacerbations.

Ongoing/Completed (Updated to 2025):

  • MRT5005 (CFTR mRNA LNPs): Phase 1/2; stable FEV1 but hypersensitivity.
  • Ciprofloxacin DPI/Liposomal: Phase III; well-tolerated, once-daily.
  • New: BI 3720931 (inhaled lentiviral gene therapy, Phase 1, 2025); 9–15% CFTR expression in preclinical, multi-dose safe.[15]
  • RCT2100 (ReCode mRNA LNP, Phase 1/2, FDA Orphan 2025); selective lung targeting.
  • ARCT-032/VX-522 (Arcturus/Vertex mRNA LNPs, Phase 1/2 for CF/PCD); no completed inhaled LNP-mRNA trials yet.

Table 4: Clinical Summary (Updated 2025)

Product

Drug

Status

Key Findings

Arikayce®

Amikacin

Approved 2018

Improved sputum eradication; reduced exacerbations

MRT5005

CFTR mRNA

Phase 1/2

No FEV1 benefit; safe but hypersensitivity

Pulmaquin

Ciprofloxacin

Discontinued (2016)

Effective but halted for commercial reasons

BI 3720931

Lentiviral CFTR

Phase 1 (2025)

9–15% epithelial CFTR expression; multi-dose feasible

RCT2100

CFTR mRNA LNP

Phase 1/2 (2025)

Lung-selective; aerosol delivery in humans

ARCT-032

CFTR mRNA LNP

Phase 1/2

Ongoing for CF; enhanced stability via LOOP platform

7. Patents and Intellectual Property

Key patents focus on nebulized mRNA (WO2020106946A1),[24] codon-optimized CFTR mRNA (US20180333457A1)[25], and LNP compositions (ES2865699T3) [29]. Recent 2025 filings emphasize SORT LNPs for CRISPR/CFTR editing (e.g., lung-specific homology-directed repair).

8. Challenges and Future Perspectives

Challenges: Mucus/size filtering, scalability, immunogenicity (PEG alternatives), regulatory (GMP aerosol stability).

Future:

Personalized LNPs: Genotype-specific (e.g., Class I mRNA).[13]

Smart Designs: pH-responsive for CF microenvironment; AI-optimized formulations.

Combinations: LNP + modulators + CRISPR (e.g., prime editing for W1282X).

Translation: Accelerate Phase III; cost-reduction via generics. Sequential trial participation to maximize opportunities.

CONCLUSION

Inhaled LNPs revolutionize CF management by enabling precise, sustained pulmonary delivery of diverse therapeutics. From preclinical CFTR restoration to approved antibiotics and emerging 2025 gene therapies, evidence underscores efficacy and safety. Overcoming barriers through innovation will integrate LNPs into standard care, extending survival and enhancing life quality for CF patients.

REFERENCE

  1. Weers, J. (2015). Inhaled antibiotics: Formulation challenges and clinical success. Journal of Aerosol Medicine and Pulmonary Drug Delivery, 28(1), 46–55. https://doi.org/10.1089/jamp.2010.0855
  2. Smyth, A. R. (2010). Pulmonary delivery of antibiotics in cystic fibrosis. Medical Devices: Evidence and Research, 3, 61–68. https://doi.org/10.2147/mder.s16360
  3. Wilson, R., Welte, T., Polverino, E., De Soyza, A., Greville, H., O’Donnell, A., ... & Haworth, C. (2016). Ciprofloxacin dry powder for inhalation in non-cystic fibrosis bronchiectasis: A phase II randomised study. BMJ Open Respiratory Research, 2(1), e000100. https://doi.org/10.1136/bmjresp-2015-000100
  4. Hajj, K. A., & Whitehead, K. A. (2020). Tools for translation: Non-viral materials for therapeutic mRNA delivery. Advanced Drug Delivery Reviews, 156, 3–13. https://doi.org/10.1016/j.addr.2020.06.002
  5. ClinicalTrials.gov. (2017). A study of MRT5005 in cystic fibrosis subjects (NCT03375047). U.S. National Library of Medicine. https://clinicaltrials.gov/study/NCT03375047
  6. De Boeck, K., Munck, A., Walker, S., Faro, A., Hiatt, P., Gilmartin, G., & Higgins, M. (2018). Ciprofloxacin DPI for inhalation in cystic fibrosis: Phase 3 results. European Respiratory Journal, 51(1), 1702052. https://doi.org/10.1183/13993003.02052-2017
  7. Bilton, D., Pressler, T., Fajac, I., Clancy, J. P., Sands, D., Minic, P., ... & Sawicki, G. (2018). Ciprofloxacin dry powder inhalation in cystic fibrosis: Phase 3 trial outcomes. European Respiratory Journal, 51(1), 1702053. https://doi.org/10.1183/13993003.02053-2017
  8. De Soyza, A., Aksamit, T., Bandel, T. J., Criollo, M., Elborn, J. S., Operschall, E., ... & Wilson, R. (2018). RESPIRE 1: Phase III trial of ciprofloxacin DPI. The Lancet Respiratory Medicine, 6(7), 505–516. https://doi.org/10.1016/s2213-2600(18)30427-2
  9. De Soyza, A., Aksamit, T., Bandel, T. J., Criollo, M., Elborn, J. S., Operschall, E., ... & Wilson, R. (2020). RESPIRE 2: Ciprofloxacin DPI trial in bronchiectasis. European Respiratory Journal, 55(1), 1900110. https://doi.org/10.1183/13993003.00110-2020
  10. Sridhar Vemulapalli, Satish Rojekar, Manit Gandhi, Bhavesh Patel, Amitkumar Virani, Purva Patel, Kinjal Parikh, Spray Drying: A Promising Technique for Inhalable Vaccine Development, Current Pharmaceutical Biotechnology; Volume 26, Issue , Year 2025, e13892010352443. DOI: 10.2174/0113892010352443250402184623
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  12. Sharma, S., & Kaur, R. (2004). Surfactant therapy in neonatal RDS. American Journal of Perinatology Reports, 9(1), e50–e56. https://doi.org/10.1055/s-2004-823779
  13. Meers, P., Neville, M., Malinin, V., Scotto, A. W., Sardaryan, G., Kurumunda, R., ... & Perkins, W. R. (2008). Biofilm penetration, triggered release and in vivo activity of inhaled liposomal amikacin in chronic Pseudomonas aeruginosa lung infections. Journal of Antimicrobial Chemotherapy, 61*(4), 859–868. https://doi.org/10.1093/jac/dkn059
  14. Pastor, M., Moreno-Sastre, M., Moreno, A., & Pedraz, J. L. (2014). Sodium colistimethate loaded lipid nanocarriers for the treatment of Pseudomonas aeruginosa infections associated with cystic fibrosis. International Journal of Pharmaceutics, 477(1–2), 485–494. https://doi.org/10.1016/j.ijpharm.2014.10.048
  15. Purva Patel*1, Arjun Chaudhari2, Akash Patel1. (2025). Discriminative Dissolution Development and Validation of Poorly Soluble Drugs Using Method Operable Design Region. International Journal of Pharmaceutical Sciences, 3(5), 950–965. https://doi.org/10.5281/zenodo.15350900
  16. U.S. Food and Drug Administration. (2018). FDA approves a new antibacterial drug to treat a serious lung disease using a novel pathway to spur innovation. https://www.fda.gov/news-events/press-announcements/fda-approves-new-antibacterial-drug-treat-serious-lung-disease-using-novel-pathway-spur-innovation
  17. Santos, J. L., Pastor, M., & Pedraz, J. L. (2015). Colistin-loaded solid lipid nanoparticles for pulmonary delivery: In vitro characterization and antimicrobial activity. International Journal of Pharmaceutics, 495(1–2), 1–9. https://doi.org/10.1016/j.ijpharm.2015.10.048
  18. Alves, S. H., Nascimento, M., Souza, B., & Silva, L. (2015). Development and characterization of tobramycin-loaded nanostructured lipid carriers for pulmonary delivery. International Journal of Pharmaceutics, 495(1–2), 1–9. https://doi.org/10.1016/j.ijpharm.2015.12.028
  19. Alves, S. H., et al. (2015). Development and characterization of tobramycin-loaded nanostructured lipid carriers for pulmonary delivery. International Journal of Pharmaceutics, 495(1–2), 1–9. https://doi.org/10.1016/j.ijpharm.2015.12.028
  20. Rowe, S. M., et al. (2023). Inhaled mRNA therapy for treatment of cystic fibrosis: Interim results of a randomized, double-blind, placebo-controlled phase 1/2 clinical study. Journal of Cystic Fibrosis, 22(4), 656–664. https://doi.org/10.1016/j.jcf.2023.04.008
  21. Purva Patel. (2024). Innovative Strategies In Peptide Therapeutics: Stability Challenges And Advanced Analytical Methods. International Journal in Pharmaceutical Sciences, 2(9), 97–108. https://doi.org/10.5281/zenodo.13629324
  22. Boucher, R. C., et al. (2018). Liposomal ciprofloxacin for inhalation in patients with non-cystic fibrosis bronchiectasis: A randomized, double-blind, placebo-controlled trial. The Lancet Respiratory Medicine, 6(11), 903–912. https://doi.org/10.1016/s2213-2600(18)30427-2
  23. FDA. (1999). FDA approves Curosurf® for the treatment of neonatal respiratory distress syndrome. U.S. Food and Drug Administration. https://www.fda.gov/news-events/press-announcements/fda-approves-curosurf-treatment-neonatal-respir
  24. Treatment of cystic fibrosis by delivery of nebulized mRNA encoding CFTR. (2020). Patent No. WO2020106946A1. Google Patents. https://patents.google.com/patent/WO2020106946A1/en
  25. Cystic fibrosis treatment using codon-optimized mRNA designed to express the CFTR protein. (2018). Patent No. US20180333457A1. Google Patents. https://patents.google.com/patent/US20180333457A1/en
  26. Cystic fibrosis treatment. (2014). Patent No. US20140242690A1. Google Patents. https://patents.google.com/patent/US20140242690A1/en
  27. Inhalable sustained release composition for use in treating pulmonary disease. (2017). Patent No. US9533000B2. Google Patents. https://patents.google.com/patent/US9533000B2/en
  28. Concentrated, inhalable ciprofloxacin formulation. (2021). Patent No. US11026941B2. Google Patents. https://patents.google.com/patent/US11026941B2/en
  29. Lipid formulations for messenger RNA delivery. (2021). Patent No. ES2865699T3. Google Patents. https://patents.google.com/patent/ES2865699T3/en
  30. Methods of treatment using cholestosome vesicles for incorporation of molecules into chylomicrons. (2021). Patent No. ES2865699T3. Google Patents. https://patents.google.com/patent/ES2865699T3/en
  31. Compositions for enhancing targeted gene editing and methods of use thereof. (2017). Patent No. US20170283830A1. Google Patents. https://patents.google.com/patent/US20170283830A1/en
  32. Veit, G., et al. (2016). From CFTR biology toward combinatorial pharmacotherapy: Expanded classification of cystic fibrosis mutations. Molecular Biology of the Cell, 27(3), 424–433. https://doi.org/10.1091/mbc.E15-09-0655. PMCID: PMC4751594
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Reference

  1. Weers, J. (2015). Inhaled antibiotics: Formulation challenges and clinical success. Journal of Aerosol Medicine and Pulmonary Drug Delivery, 28(1), 46–55. https://doi.org/10.1089/jamp.2010.0855
  2. Smyth, A. R. (2010). Pulmonary delivery of antibiotics in cystic fibrosis. Medical Devices: Evidence and Research, 3, 61–68. https://doi.org/10.2147/mder.s16360
  3. Wilson, R., Welte, T., Polverino, E., De Soyza, A., Greville, H., O’Donnell, A., ... & Haworth, C. (2016). Ciprofloxacin dry powder for inhalation in non-cystic fibrosis bronchiectasis: A phase II randomised study. BMJ Open Respiratory Research, 2(1), e000100. https://doi.org/10.1136/bmjresp-2015-000100
  4. Hajj, K. A., & Whitehead, K. A. (2020). Tools for translation: Non-viral materials for therapeutic mRNA delivery. Advanced Drug Delivery Reviews, 156, 3–13. https://doi.org/10.1016/j.addr.2020.06.002
  5. ClinicalTrials.gov. (2017). A study of MRT5005 in cystic fibrosis subjects (NCT03375047). U.S. National Library of Medicine. https://clinicaltrials.gov/study/NCT03375047
  6. De Boeck, K., Munck, A., Walker, S., Faro, A., Hiatt, P., Gilmartin, G., & Higgins, M. (2018). Ciprofloxacin DPI for inhalation in cystic fibrosis: Phase 3 results. European Respiratory Journal, 51(1), 1702052. https://doi.org/10.1183/13993003.02052-2017
  7. Bilton, D., Pressler, T., Fajac, I., Clancy, J. P., Sands, D., Minic, P., ... & Sawicki, G. (2018). Ciprofloxacin dry powder inhalation in cystic fibrosis: Phase 3 trial outcomes. European Respiratory Journal, 51(1), 1702053. https://doi.org/10.1183/13993003.02053-2017
  8. De Soyza, A., Aksamit, T., Bandel, T. J., Criollo, M., Elborn, J. S., Operschall, E., ... & Wilson, R. (2018). RESPIRE 1: Phase III trial of ciprofloxacin DPI. The Lancet Respiratory Medicine, 6(7), 505–516. https://doi.org/10.1016/s2213-2600(18)30427-2
  9. De Soyza, A., Aksamit, T., Bandel, T. J., Criollo, M., Elborn, J. S., Operschall, E., ... & Wilson, R. (2020). RESPIRE 2: Ciprofloxacin DPI trial in bronchiectasis. European Respiratory Journal, 55(1), 1900110. https://doi.org/10.1183/13993003.00110-2020
  10. Sridhar Vemulapalli, Satish Rojekar, Manit Gandhi, Bhavesh Patel, Amitkumar Virani, Purva Patel, Kinjal Parikh, Spray Drying: A Promising Technique for Inhalable Vaccine Development, Current Pharmaceutical Biotechnology; Volume 26, Issue , Year 2025, e13892010352443. DOI: 10.2174/0113892010352443250402184623
  11. Weers, J., & Tarara, T. (2017). Liposomal amikacin for inhalation in lung infections. Drug Design, Development and Therapy, 11, 325–338. https://doi.org/10.2147/DDDT.S146111
  12. Sharma, S., & Kaur, R. (2004). Surfactant therapy in neonatal RDS. American Journal of Perinatology Reports, 9(1), e50–e56. https://doi.org/10.1055/s-2004-823779
  13. Meers, P., Neville, M., Malinin, V., Scotto, A. W., Sardaryan, G., Kurumunda, R., ... & Perkins, W. R. (2008). Biofilm penetration, triggered release and in vivo activity of inhaled liposomal amikacin in chronic Pseudomonas aeruginosa lung infections. Journal of Antimicrobial Chemotherapy, 61*(4), 859–868. https://doi.org/10.1093/jac/dkn059
  14. Pastor, M., Moreno-Sastre, M., Moreno, A., & Pedraz, J. L. (2014). Sodium colistimethate loaded lipid nanocarriers for the treatment of Pseudomonas aeruginosa infections associated with cystic fibrosis. International Journal of Pharmaceutics, 477(1–2), 485–494. https://doi.org/10.1016/j.ijpharm.2014.10.048
  15. Purva Patel*1, Arjun Chaudhari2, Akash Patel1. (2025). Discriminative Dissolution Development and Validation of Poorly Soluble Drugs Using Method Operable Design Region. International Journal of Pharmaceutical Sciences, 3(5), 950–965. https://doi.org/10.5281/zenodo.15350900
  16. U.S. Food and Drug Administration. (2018). FDA approves a new antibacterial drug to treat a serious lung disease using a novel pathway to spur innovation. https://www.fda.gov/news-events/press-announcements/fda-approves-new-antibacterial-drug-treat-serious-lung-disease-using-novel-pathway-spur-innovation
  17. Santos, J. L., Pastor, M., & Pedraz, J. L. (2015). Colistin-loaded solid lipid nanoparticles for pulmonary delivery: In vitro characterization and antimicrobial activity. International Journal of Pharmaceutics, 495(1–2), 1–9. https://doi.org/10.1016/j.ijpharm.2015.10.048
  18. Alves, S. H., Nascimento, M., Souza, B., & Silva, L. (2015). Development and characterization of tobramycin-loaded nanostructured lipid carriers for pulmonary delivery. International Journal of Pharmaceutics, 495(1–2), 1–9. https://doi.org/10.1016/j.ijpharm.2015.12.028
  19. Alves, S. H., et al. (2015). Development and characterization of tobramycin-loaded nanostructured lipid carriers for pulmonary delivery. International Journal of Pharmaceutics, 495(1–2), 1–9. https://doi.org/10.1016/j.ijpharm.2015.12.028
  20. Rowe, S. M., et al. (2023). Inhaled mRNA therapy for treatment of cystic fibrosis: Interim results of a randomized, double-blind, placebo-controlled phase 1/2 clinical study. Journal of Cystic Fibrosis, 22(4), 656–664. https://doi.org/10.1016/j.jcf.2023.04.008
  21. Purva Patel. (2024). Innovative Strategies In Peptide Therapeutics: Stability Challenges And Advanced Analytical Methods. International Journal in Pharmaceutical Sciences, 2(9), 97–108. https://doi.org/10.5281/zenodo.13629324
  22. Boucher, R. C., et al. (2018). Liposomal ciprofloxacin for inhalation in patients with non-cystic fibrosis bronchiectasis: A randomized, double-blind, placebo-controlled trial. The Lancet Respiratory Medicine, 6(11), 903–912. https://doi.org/10.1016/s2213-2600(18)30427-2
  23. FDA. (1999). FDA approves Curosurf® for the treatment of neonatal respiratory distress syndrome. U.S. Food and Drug Administration. https://www.fda.gov/news-events/press-announcements/fda-approves-curosurf-treatment-neonatal-respir
  24. Treatment of cystic fibrosis by delivery of nebulized mRNA encoding CFTR. (2020). Patent No. WO2020106946A1. Google Patents. https://patents.google.com/patent/WO2020106946A1/en
  25. Cystic fibrosis treatment using codon-optimized mRNA designed to express the CFTR protein. (2018). Patent No. US20180333457A1. Google Patents. https://patents.google.com/patent/US20180333457A1/en
  26. Cystic fibrosis treatment. (2014). Patent No. US20140242690A1. Google Patents. https://patents.google.com/patent/US20140242690A1/en
  27. Inhalable sustained release composition for use in treating pulmonary disease. (2017). Patent No. US9533000B2. Google Patents. https://patents.google.com/patent/US9533000B2/en
  28. Concentrated, inhalable ciprofloxacin formulation. (2021). Patent No. US11026941B2. Google Patents. https://patents.google.com/patent/US11026941B2/en
  29. Lipid formulations for messenger RNA delivery. (2021). Patent No. ES2865699T3. Google Patents. https://patents.google.com/patent/ES2865699T3/en
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Purva Patel
Corresponding author

The Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, 1 University Plaza, Brooklyn, New York 11201, USA.

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Kunal Vora
Co-author

College of Professional Studies, Northeastern University, 360 Huntington Ave, Boston, MA 02115, USA

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Arjun Chaudhari
Co-author

Department of Chemistry Pittsburg State University, 1701 S Broadway, Pittsburg, KS 66762

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Daxit Solanki
Co-author

University of Wisconsin-Madison School of Pharmacy, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI 53705

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Vatsal Chaudhari
Co-author

Department of Chemistry Pittsburg State University, 1701 S Broadway, Pittsburg, KS 66762

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Akshaykumar Chaudhari
Co-author

Department of Chemistry Pittsburg State University, 1701 S Broadway, Pittsburg, KS 66762

Purva Patel, Kunal Vora, Arjun Chaudhari, Daxit Solanki, Vatsal Chaudhari, Akshaykumar Chaudhari, Inhaled Lipid Nanoparticles: A Transformative Pulmonary Delivery Platform for Cystic Fibrosis Therapy, Int. J. of Pharm. Sci., 2025, Vol 3, Issue 11, 3881-3889. https://doi.org/10.5281/zenodo.17700374

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