NEUROINFLAMMATION AS A THERAPEUTIC TARGET IN AMYOTROPHIC LATERAL SCLEROSIS (ALS): MECHANISMS, SIGNIFICANCE, AND EMERGING INTERVENTIONS
DOI:
https://doi.org/10.31435/ijitss.1(49).2026.5105Keywords:
Amyotrophic Lateral Sclerosis, Neuroinflammation, Microglia, Astrocytes, Targeted Therapy, MicrobiotaAbstract
Amyotrophic lateral sclerosis (ALS) is an incurable neurodegenerative disease leading to the loss of motor neurons and progressive paralysis. Increasing evidence suggests that chronic neuroinflammation plays a key role in its development. Excessive activation of microglia, toxic reprogramming of astrocytes, and the activation of NF-κB, NLRP3, and C5a–C5aR1 signaling pathways drive neuronal damage. Literature review shows that therapeutic interventions targeting neuroinflammation demonstrate promising effects in preclinical models, but their clinical efficacy remains limited. Additionally, emerging studies suggest a role of gut microbiota in modulating inflammatory responses via the gut–brain axis. This review discusses neuroinflammatory mechanisms, their role in ALS progression, and potential therapeutic strategies, highlighting the need for further research into inflammation biomarkers and personalized therapies.
References
O’Neill, K., Shaw, R., Bolger, I., et al. (2025). ALS molecular subtypes are a combination of cellular and pathological features learned by deep multiomics classifiers. Cell Reports, 44(3), 115402. https://doi.org/10.1016/j.celrep.2025.115402
Mejzini, R., Flynn, L. L., Pitout, I. L., Fletcher, S., Wilton, S. D., & Akkari, P. A. (2019). ALS genetics, mechanisms, and therapeutics: Where are we now? Frontiers in Neuroscience, 13, 1310. https://doi.org/10.3389/fnins.2019.01310
Ward, E. L., Benowitz, L., Brunner, T. M., et al. (2025). Modeling neurodegeneration in the retina and strategies for developing pan-neurodegenerative therapies. Molecular Neurodegeneration, 20, 108. https://doi.org/10.1186/s13024-025-00858-5
Taso, O. S. (2025). Molecular and temporal underpinnings of non-cell autonomous pathology in amyotrophic lateral sclerosis [Doctoral dissertation, University of Edinburgh]. https://hdl.handle.net/1842/44180
Lewandowski, D., Konieczny, M., Różycka, A., Chrzanowski, K., Owecki, W., Kalinowski, J., Stepura, M., Jagodziński, P., & Dorszewska, J. (2025). Cathepsins in neurological diseases. International Journal of Molecular Sciences, 26(16), 7886. https://doi.org/10.3390/ijms26167886
Goel, F., Kumar, D., Singh, P., Rai, S. N., & Yadav, D. K. (2025). Molecular crosstalk between miRNAs and lncRNAs in neurodegenerative disease pathways. Molecular Biology Reports, 53(1), 16. https://doi.org/10.1007/s11033-025-11187-7
Eroglu, E., & Harmanci, N. (2025). Emerging molecular targets in neurodegenerative disorders: New avenues for therapeutic intervention. Basic & Clinical Pharmacology & Toxicology, 137(4), e70107. https://doi.org/10.1111/bcpt.70107
Alborghetti, M., Ceccherelli, A., Caridi, M., Nicoletti, F., Battaglia, G., & Bruno, V. (2025). Targeting metabotropic glutamate receptors for symptomatic and disease-modifying treatment in Parkinson’s disease. NPJ Parkinson’s Disease, 11(1), 290. https://doi.org/10.1038/s41531-025-01138-1
Iyer, A. K., Moutinho, M., Ayata, P., & Karahan, H. (2025). Editorial: Myeloid cells as active players in human neurodegenerative diseases. Frontiers in Neuroscience, 19, 1712394. https://doi.org/10.3389/fnins.2025.1712394
Chen, Y., Yin, P., Chen, Q., et al. (2025). Neurodegenerative diseases and immune system: From pathogenic mechanism to therapy. Neural Regeneration Research. Advance online publication. https://doi.org/10.4103/NRR.NRR-D-25-00274
Abbassi, Y., Fink, D., Cei, F., Niccolai, E., & Amedei, A. (2025). TDP-43-immunity-microbiota axis in amyotrophic lateral sclerosis: A potential pathogenic mechanism. Neural Regeneration Research. Advance online publication. https://doi.org/10.4103/NRR.NRR-D-25-00440
Vishnumukkala, T., Che Mohd Nassir, C. M. N., Hein, Z. M., et al. (2025). Glial cells as emerging therapeutic targets in neurodegenerative diseases: Mechanistic insights and translational perspectives. Cells, 14(19), 1497. https://doi.org/10.3390/cells14191497
Anderson, F. L., Biggs, K. E., Rankin, B. E., & Havrda, M. C. (2023). NLRP3 inflammasome in neurodegenerative disease. Translational Research, 252, 21–33. https://doi.org/10.1016/j.trsl.2022.08.006
Ge, T. Q., Wang, P., & Guan, P. P. (2026). Targeting the C5-C5aR1 axis: A promising therapeutic strategy for Alzheimer’s disease and amyotrophic lateral sclerosis by unlocking neuroprotection. Biochemical Pharmacology, 243(Pt. 1), 117518. https://doi.org/10.1016/j.bcp.2025.117518
Balakrishnan, R., Kang, S. I., Lee, J. Y., Rho, Y. K., Kim, B. K., & Choi, D. K. (2024). Gut microbiota-immune system interactions in health and neurodegenerative diseases: Insights into molecular mechanisms and therapeutic applications. Aging and Disease, 16(6), 3421–3452. https://doi.org/10.14336/AD.2024.1362
Sharma, V. K. (2025). Dysbiosis and neurodegeneration in ALS: Unraveling the gut-brain axis. Neuromolecular Medicine, 27(1), 50. https://doi.org/10.1007/s12017-025-08870-0
Femiano, C., Bruno, A., Gilio, L., et al. (2024). Inflammatory signature in amyotrophic lateral sclerosis predicting disease progression. Scientific Reports, 14(1), 19796. https://doi.org/10.1038/s41598-024-67165-9
Noh, M. Y., Kwon, H., Kwon, M. S., et al. (2025). Biomarkers and therapeutic strategies targeting microglia in neurodegenerative diseases: Current status and future directions. Molecular Neurodegeneration, 20, 82. https://doi.org/10.1186/s13024-025-00867-4
Ng, W., & Ng, S. Y. (2022). Remodeling of astrocyte secretome in amyotrophic lateral sclerosis: Uncovering novel targets to combat astrocyte-mediated toxicity. Translational Neurodegeneration, 11, 54. https://doi.org/10.1186/s40035-022-00332-y
Kwon, H. S., & Koh, S. H. (2020). Neuroinflammation in neurodegenerative disorders: The roles of microglia and astrocytes. Translational Neurodegeneration, 9, 42. https://doi.org/10.1186/s40035-020-00221-2
Vucic, S., Henderson, R. D., Mathers, S., Needham, M., Schultz, D., Kiernan, M. C., & the TEALS Study Group. (2021). Safety and efficacy of dimethyl fumarate in ALS: Randomised controlled study. Annals of Clinical and Translational Neurology, 8, 1991–1999. https://doi.org/10.1002/acn3.51446
Zhu, Q., Song, Y., Qian, Y., Zhang, R., Xue, J., & Hou, Y. (2025). Targeting glial dysfunction in Alzheimer’s disease: Insights into pathogenesis and emerging therapeutics. Ageing and Neurodegenerative Diseases, 5, 19. https://doi.org/10.20517/and.2025.25
Krull, A. A., Setter, D. O., Gendron, T. F., et al. (2021). Alterations of mesenchymal stromal cells in cerebrospinal fluid: Insights from transcriptomics and an ALS clinical trial. Stem Cell Research & Therapy, 12, 187. https://doi.org/10.1186/s13287-021-02241-9
Gotkine, M., Caraco, Y., Lerner, Y., et al. (2023). Safety and efficacy of first-in-man intrathecal injection of human astrocytes (AstroRx®) in ALS patients: Phase I/IIa clinical trial results. Journal of Translational Medicine, 21, 122. https://doi.org/10.1186/s12967-023-03903-3
Singh, H., Gupta, R., Gupta, M., et al. (2025). Aging-induced alterations in microglial cells and their impact on neurodegenerative disorders. Molecular Biology Reports, 52, 515. https://doi.org/10.1007/s11033-025-10623-y
Gupta, M. K., Chauhan, K., Bhardwaj, S., et al. (2025). Innovative interventions: Postbiotics and psychobiotics in neurodegenerative disease treatment. Probiotics and Antimicrobial Proteins. Advance online publication. https://doi.org/10.1007/s12602-025-10632-0
Downloads
Published
Issue
Section
License
Copyright (c) 2026 Kornelia Kazmierkiewicz-Makanga, Weronika Spychalska, Emilia Piotrowicz, Filip Witowicz, Julia Glińska, Aleksandra Krawczyk, Wiktoria Waldon, Paulina Sumlet, Maria Gofron, Michał Duliński

This work is licensed under a Creative Commons Attribution 4.0 International License.
All articles are published in open-access and licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). Hence, authors retain copyright to the content of the articles.
CC BY 4.0 License allows content to be copied, adapted, displayed, distributed, re-published or otherwise re-used for any purpose including for adaptation and commercial use provided the content is attributed.

