Platelets Target the Circulating HIV Reservoir: Implications for Immunological Failure (PLAQUAGE)
PLAQUAGE - Platelets Target the Circulating HIV Reservoir: Implications for Immunological Failure
HIV/AIDS is a chronic disease that is difficult to eradicate because the virus persists as proviral DNA integrated into the host cells. Despite antiretroviral therapy, proviral DNA persists in lymphoid and myeloid reservoirs, whether circulating (memory CD4+ T cells) or tissue-based (macrophages). HIV reservoirs are highly heterogeneous, making it difficult to identify a specific biomarker or cell profile for a given reservoir. A distinctive feature of HIV reservoirs may be the selective interaction between reservoir cells and platelets. The presence of HIV in platelets could impact disease progression, particularly by triggering the reversal of HIV latency and leading to residual viral production. The frequency of platelets containing circulating virus in the blood is approximately 0.1% of the total platelet volume. Although seemingly negligible, this would represent a daily input of 10⁸ platelets harboring the virus. Furthermore, patients whose platelets contain HIV are primarily those with persistent immunological failure, known as "immunological non-responders" (InR).
The regulation of the size (number and frequency) of the HIV reservoir by platelets is not known. However, HIV-containing platelets form more conjugates with CD4+ T cells than HIV-free platelets. While HIV-containing platelets do not productively infect cells, they induce metabolic dysfunction in CD4+ T cells (aerobic glycolysis). Increased aerobic glycolysis is a hallmark of T cell activation and senescence.
This suggests an interconnection between the presence of the virus in platelets, the size of the reservoir, and immune dysfunction in HIV.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Jean-Jacques VITAGLIANO, PhD
- Telefonnummer: +33320694280
- E-mail: jjvitagliano@ch-tourcoing.fr
Undersøgelse Kontakt Backup
- Navn: VITAGLIANO
- Telefonnummer: 0320694280
- E-mail: jjvitagliano@ch-tourcoing.fr
Studiesteder
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Tourcoing, Frankrig, 59200
- Rekruttering
- Centre Hospitalier de Tourcoing
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Kontakt:
- Jean-Jacques Vitagliano, PhD
- Telefonnummer: 0320694280
- E-mail: jjvitagliano@ch-tourcoing.fr
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Ledende efterforsker:
- Olivier Robineau, MD, PhD
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Adult patients living with HIV with an undetectable viral load for more than 2 years
- Beneficiary of a social security scheme or rightful claimant;
- Patients able to read and understand the information sheet;
- Having signed the consent form.
Exclusion Criteria:
- being unable to give free and informed consent;
- pregnant or breastfeeding woman;
- being under guardianship, curatorship, or a protection mandate;
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Antal grupper/kohorter
Kohorter og interventioner
Gruppe / kohorteGruppe / kohorte |
Intervention / BehandlingIntervention / Behandling |
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Immunological non-responders 1
Immunological non-responders (<500 CD4+ T cells/µL, undetectable viral load for >2 years) with a CD4+ T cell nadir below 100.
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During a routine consultation, a specific 40 mL blood sample will be collected for the study.
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Immunological responders
Immunological responders (>500 CD4+ T cells/µL, undetectable viral load for >2 years)
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During a routine consultation, a specific 40 mL blood sample will be collected for the study.
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Immunological non-responders 2
Immunological non-responders (<500 CD4+ T cells/µL, undetectable viral load for >2 years) with a CD4+ T cell nadir between 200 and 500
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During a routine consultation, a specific 40 mL blood sample will be collected for the study.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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In vivo evaluation of the formation of platelet-PBMC conjugates enriched in latent or active reservoirs and of their transcriptional competence
Tidsramme: at enrollment
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In vivo evaluation of the formation of platelet-PBMC conjugates enriched in latent or active reservoirs, correlated with immune status through the following parameters: Frequency of CD4+ T lymphocytes associated with platelets and/or platelet components, Frequency of platelet-associated CD4+ T cells carrying HIV RNA, and ex vivo HIV reactivation; Number of integrated HIV provirus copies in CD4+ T cells associated or not with platelets. Monitoring of the transcriptional competence of platelet-associated reservoirs ex vivo, and the capacity of platelets to reactivate these reservoirs (latency reversal) in vitro based on the following criterion: Frequency of J-Lat GFP+ cells (indicating a reactivated provirus in this reporter cell) after coculture with platelets obtained from individuals of the different experimental groups. |
at enrollment
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Olivier Robineau, MD, PhD, Centre Hospitalier de Tourcoing
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Blodbårne infektioner
- Urogenitale sygdomme
- Genitale sygdomme
- Sygdomme i immunsystemet
- Infektioner
- RNA-virusinfektioner
- Virussygdomme
- Overførbare sygdomme
- Seksuelt overførte sygdomme, virale
- Seksuelt overførte sygdomme
- Lentivirus infektioner
- Retroviridae infektioner
- Immunologiske mangelsyndromer
- Langsomme virussygdomme
- HIV-infektioner
- Erhvervet immundefektsyndrom
- Undersøgelsesteknikker
- Håndtering af eksemplar
- Kliniske laboratorieteknikker
- Diagnostiske teknikker og procedurer
- Diagnose
- Punkteringer
- Kirurgiske procedurer, operative
- Blodprøveopsamling
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- CHT/URC/2023/10
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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