Ignite Creation Date:
2025-12-25 @ 12:43 AM
Ignite Modification Date:
2025-12-26 @ 1:14 PM
Study NCT ID:
NCT05333367
Status:
RECRUITING
Last Update Posted:
2024-11-21
First Post:
2022-04-04
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
MORPHEE : Mechanisms of Cell Death Induced by Extracorporeal Photochemotherapy
Sponsor:
Centre Hospitalier Universitaire de Besancon
Organization:
Study Overview
Official Title:
MORPHEE : Mechanisms of Cell Death Induced by Extracorporeal Photochemotherapy
Status:
RECRUITING
Status Verified Date:
2024-11
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
MORPHEE
Brief Summary:
The objective of this study is to describe the type of cell death induced by extracorporeal photochemotherapy, depending on the cell type, using a panel of complementary analysis techniques.
Detailed Description:
Extracorporeal photochemotherapy (ECP) is a cell therapy used for its immunomodulation and tolerance induction capabilities. Its main indications are the control of graft-versus-host (GVH) disease in hematopoietic cell allografts, treatment and control of rejection in solid organ transplantation and the treatment of cutaneous T-cell lymphoma. Data on the mechanisms of action of ECP remains very patchy. This lack of data limits the discussion on therapeutic regimens by disease.
ECP consists of repeated apheresis sessions to collect leukocytes from the patient. The cells are then photosensitized, irradiated with UVA and reinjected into the patient in a closed circuit. In the context of GVH, induced cell death would stimulate the expansion of regulatory cells (Treg), restore a Th1/Th2 balance and decrease Th17 polarization. The ECP also allows the expansion of Treg in solid organ transplantation. Conversely, ECP would restore or activate an antitumor immune response in cutaneous T lymphoma.
The type of cells collected and treated would play a major role in the effects obtained. However, these hypotheses must be consolidated, in particular by detailing the initial role of cell death. Several questions remain, on the chronology of cell death in the different treated subpopulations, on the uptake by phagocytes, but especially on the type of cell death induced according to the cell type (necroptosis, apoptosis, pyroptosis, autophagy). The data generated will allow for validation or detail of the mechanisms of resolution of the inflammation and/or the anti-tumour effect observed.
ECP consists of repeated apheresis sessions to collect leukocytes from the patient. The cells are then photosensitized, irradiated with UVA and reinjected into the patient in a closed circuit. In the context of GVH, induced cell death would stimulate the expansion of regulatory cells (Treg), restore a Th1/Th2 balance and decrease Th17 polarization. The ECP also allows the expansion of Treg in solid organ transplantation. Conversely, ECP would restore or activate an antitumor immune response in cutaneous T lymphoma.
The type of cells collected and treated would play a major role in the effects obtained. However, these hypotheses must be consolidated, in particular by detailing the initial role of cell death. Several questions remain, on the chronology of cell death in the different treated subpopulations, on the uptake by phagocytes, but especially on the type of cell death induced according to the cell type (necroptosis, apoptosis, pyroptosis, autophagy). The data generated will allow for validation or detail of the mechanisms of resolution of the inflammation and/or the anti-tumour effect observed.
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: