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The Potential of Mesenchymal Stromal Stem Cells to Correct Immune and Metabolic Dysfunctions in Circulating Immune Cells During Sepsis: An Ex Vivo Pilot Study. (REPROCELL)

4. september 2026 oppdatert av: Centre Hospitalier Universitaire Dijon

Sepsis is a life-threatening organ dysfunction caused by the host's dysregulated immune response to infection. It represents a major global public health challenge. A state of post-septic compensatory immunosuppression may contribute to excess mortality by promoting secondary infections, thereby prolonging the stay in the intensive care unit and increasing the risk of death.

New therapeutic strategies to complement antimicrobial treatments-which may correct sepsis-induced functional alterations in immune cells (such as endotoxin tolerance and reduced HLA-DR expression), partly mediated by metabolic abnormalities-are currently being investigated. Among these, mesenchymal stromal cells (MSCs) appear particularly promising. They are capable of reprogramming immune cells by redirecting certain metabolic pathways, notably improving mitochondrial function. MSCs generally have an anti-inflammatory effect in preclinical models of infection, particularly in the early phase of severe ventilated pneumonia, as illustrated by the animal model we have developed, and preliminary trials are currently underway in humans. The ability of CSMs to correct sepsis-induced immunosuppression has not yet been explored. Nevertheless, CSMs possess the ability to communicate with the inflammatory microenvironment in which they are found, conferring plasticity to their response.

We hypothesize that CSMs could correct certain immune and metabolic dysfunctions in circulating immune cells from patients with sepsis meeting severity criteria who are admitted to the intensive care unit.

Furthermore, priming (or prior stimulation) of CSMs could enable a more precise and personalized therapeutic approach, with the possibility of directing CSMs toward a pro-inflammatory (CSM1) or anti-inflammatory (CSM2) phenotype through prior incubation with specific agonists (LPS; IFN-γ/TNF, respectively) before their administration. Depending on the patient's immune status (pro-inflammatory or anti-inflammatory phase), such a personalized approach would optimize treatment with CSMs.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Intervensjon / Behandling

Studietype

Observasjonsmessig

Registrering (Antatt)

51

Kontakter og plasseringer

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Studiekontakt

Studiesteder

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

Patient with sepsis complicated by ARDS or septic shock

Beskrivelse

Inclusion Criteria:

  • Patient or authorized representative, informed and having given consent
  • Age ≥ 18 years

  • Patients admitted for sepsis defined by the association as:

    • Clinically or microbiologically documented infection

    • SOFA-2 score ≥ 2

      • Or +2 points if pre-existing organ dysfunction

  • Complicated

    • ARDS (Berlin criteria (1))

      • Acute respiratory failure
      • AND Bilateral pulmonary opacities (X-ray or CT scan) with no evidence of predominant hydrostatic edema
      • AND PaO₂/FiO₂ ≤ 300 mmHg under invasive or non-invasive ventilation with PEEP ≥ 5 cmH₂O

    • or septic shock (2)

      • Vasopressors required to maintain mean arterial pressure (MAP) ≥ 65 mmHg
      • AND arterial lactate > 2 mmol/L
      • AND despite adequate fluid resuscitation
  • Blood sample may be collected within 72 hours of admission to the intensive care unit

Exclusion Criteria:

  • Individuals not enrolled in or not eligible for a social security program
  • Individuals subject to a legal protection order
  • Pregnant women, women in labor, or breastfeeding women

  • Known severe immunodeficiency prior to sepsis:

    • cytostatic chemotherapy within the previous 3 months,
    • previously known neutropenia < 500/mm³ (within the past month) not attributed to sepsis,
    • active hematologic malignancy currently undergoing treatment,
    • allogeneic bone marrow transplant < 1 year ago,
    • solid organ transplant receiving immunosuppressants
    • corticosteroid therapy ≥ 0.5 mg/kg/day of prednisone equivalent for > 3 weeks,
    • anti-TNF or anti-IL-6 biologic therapy within the past 3 months,
    • HIV infection with a detectable viral load while not on treatment

Secondary exclusion criteria :

- A diagnosis of sepsis was ruled out following a comprehensive medical evaluation and/or an alternative diagnosis was identified that explains the elevated SOFA-2 score

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
Patient with sepsis complicated by ARDS or septic shock
Biologisk: Blood sample
Drawing an EDTA tube
Biologisk: Blood sample
Collection of 5 heparinized tubes

Hva måler studien?

Primære resultatmål

Resultatmål
Tidsramme
Concentration of TNF-α in the supernatant from ex vivo co-incubation of whole blood collected on days 1-3 after admission to the intensive care unit (± CSMs), as measured by ELISA, following stimulation of immune cells with LPS
Tidsramme: 3 months
3 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Centre Hospitalier Universitaire Dijon

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. september 2026

Primær fullføring (Antatt)

1. desember 2028

Studiet fullført (Antatt)

1. desember 2028

Datoer for studieregistrering

Først innsendt

4. september 2026

Først innsendt som oppfylte QC-kriteriene

4. september 2026

Først lagt ut (Faktiske)

10. september 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

10. september 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

4. september 2026

Sist bekreftet

1. september 2026

Mer informasjon

Begreper knyttet til denne studien

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • JACQUIER CRBFC 2023

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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