Cited by 13Intracerebral and Subarachnoid Hemorrhage ResearchHeme Oxygenase-1 and Carbon MonoxideTelomeres, Telomerase, and Senescence

Hemin-induced transient senescence via DNA damage response: a neuroprotective mechanism against ferroptosis in intracerebral hemorrhage

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Malojirao, Vikas H., Vasquez, Velmarini, Kodavati, Manohar, Mitra, Joy, Provasek, Vincent, Voh, Anh Tran Tram, Liopo, Anton V., Derry, Paul J. +7 more·2025·Communications Biology

Published version of a preprint

Abstract

Intracerebral hemorrhage (ICH) poses acute fatality and long-term neurological risks due to hemin and iron accumulation from hemoglobin breakdown. Our observation that hemin induces DNA double-strand breaks (DSBs), prompting a senescence-like phenotype in neurons, necessitating deeper exploration of cellular responses. Using experimental ICH models and human ICH patient tissue, we elucidate hemin-mediated DNA damage response (DDR) inducing transient senescence and delayed expression of heme oxygenase (HO-1). HO-1 co-localizes with senescence-associated β-Galactosidase (SA-β-Gal) in ICH patient tissues, emphasizing clinical relevance of inducible HO-1 expression in senescent cells. We reveal a reversible senescence state protective against acute cell death by hemin, while repeat exposure leads to long-lasting senescence. Inhibiting early senescence expression increases cell death, supporting the protective role of senescence against hemin toxicity. Hemin-induced senescence is attenuated by a pleiotropic carbon nanoparticle that is a catalytic mimic of superoxide dismutase, but this treatment increased lipid peroxidation, consistent with ferroptosis from hemin breakdown released iron. When coupled with iron chelator deferoxamine (DEF), the nanoparticle reduces hemin-induced senescence and upregulates factors protecting against ferroptosis. Our study suggests transient senescence induced by DDR as an early potential neuroprotective mechanism in ICH, but the risk or iron-related toxicity supports a multi-pronged therapeutic approach.

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Authors
Malojirao, V. H., Vasquez, V., Kodavati, M., Mitra, J., Provasek, V., Voh, A. T. T., Liopo, A. V., Derry, P. J., Mikheev, A. M., Rostomily, R. C., Horner, P. J., Tour, J. M., Britz, G. W., Kent, T. A., & Hegde, M. L.
Affiliations
  • Houston Methodist (US)
  • Houston Methodist Research Institute (US)
  • Texas A&M Health Science Center (US)
  • Rice University (US)
Corresponding author
  • Kent, Thomas A.
  • Hegde, Muralidhar L.
Venue
Communications Biology
Published
2025-04-17
Volume
8
Issue
1
Pages
622-622
ISSN
2399-3642 (ISSN-L)
OpenAlex
W4409523066
Cited by
13
References
54
Citations by year
2026: 10 · 2025: 2 · 2024: 1
FWCI
7.31
Type
journal article
Language
en
Open access
Locations
  • Communications Biology (publishedVersion, cc-by-nc-nd)
  • Research Square (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Rice Research Repository (Rice University) (submittedVersion, cc-by-nc-nd)
Funders
U.S. Department of Health & Human Services | NIH | National Institute of Neurological Disorders and Stroke (RF1NS112719, R01NS094535)
Topics
  • Health Sciences › Medicine › Neurology › Intracerebral and Subarachnoid Hemorrhage Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heme Oxygenase-1 and Carbon Monoxide
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
intracerebral hemorrhage, hemin, DNA damage response, DNA double-strand breaks, ferroptosis, heme oxygenase-1, senescence-associated β-galactosidase, iron accumulation, carbon nanoparticles, superoxide dismutase mimetic, deferoxamine, lipid peroxidation, neuroprotection, neuronal cell death

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