TOLerogenic Potential of Hematopoietic Stem and Progenitor Cells and Inflammatory Bowel Disease (TOL-IBD)
Exploring and Exploiting the TOLerogenic Potential of Hematopoietic Stem and Progenitor Cells to Cure Pediatric Inflammatory Bowel Disease
研究概览
地位
详细说明
Inflammatory Bowel Disease (IBD) is a chronic inflammatory condition affecting the gastrointestinal tract, with Crohn's Disease (CD) and Ulcerative Colitis (UC) being the main types. The causes of IBD are complex and include immune dysregulation with activation of immune cells, release of inflammatory cytokines, and intestinal tissue damage. Despite significant advances in the treatment of pediatric IBD, a large unmet need for a definitive cure remains, and cell immunotherapy is under investigation. The investigators are specifically interested in refractory IBD, a chronic active condition requiring continuous treatment for symptom relief, with detrimental side effects. Despite the several treatment options currently available, 30% of pediatric IBD patients are refractory, and none of the existing treatments results in complete remission.
Interleukin 10 (IL-10) is an immunoregulatory cytokine associated with IBD pathogenesis and regulating gut homeostasis. Type 1 regulatory T (Tr1) cells produce IL-10 and their function is crucial for suppression of inflammation in IBD. The investigators recently published that antigen (Ag)-specific immune responses in Celiac Disease can be controlled via IL-10-producing Ag-presenting cells engineered to express a gliadin epitope, demonstrating that Ag-presenting cells can be manipulated to promote Tr1 cell differentiation.
Significant advances in the field of hematopoietic stem and progenitor cells (HSPCs) engineering and biology have been achieved. The development of protocols for ex-vivo manipulation and expansion of circulating (c)HSPCs and of mobilization-based chemotherapy-free approaches broadens the applicability of HSPC-based therapies to diseases for which HSPC transplantation is not the standard of care. A recent report showed that Tr1 cells can be promoted by immunogenic HSPC, which present Ags via HLA class II to CD4+ T cells in the bone marrow. This discovery opens new avenues for the development of approaches exploiting the Ag-presenting capacity and the tolerogenic potential of HSPCs to counteract inflammation in target tissues.
Based on these premises, with the final goal of developing a procedure for the induction of IL-10-mediated tolerance to control intestinal inflammation in refractory IBD pediatric patients, the investigators will:
- Investigate the type and frequency of inflammatory and regulatory immune cells, including IL-10-related regulatory cells, infiltrating the gut mucosa of IBD and non-IBD control patients. Results will indicate whether enforcement of the regulatory arm would benefit IBD patients. To this aim, it is necessary to collect and analyze intestinal tissue fragments from IBD and non-IBD control patients.
- Investigate the type and frequency of immune cells, including IL-10-related regulatory cells, circulating in the peripheral blood of IBD patients and non-IBD control patients. Results will indicate whether enforcement of the regulatory arm would benefit IBD patients. To this aim it is necessary to collect PB from IBD and non-IBD control patients.
- Characterize the presence, phenotype, and expansion potential of CD34+ HSPCs circulating in the peripheral blood of IBD patients. To this end, the investigators will collect peripheral blood from IBD patients, and i) assess the frequency, composition, and Ag-presenting potential of and ii) apply ex-vivo expansion and engineering protocols to CD34+ HSPC circulating in the peripheral blood of IBD patients. These results will be pivotal for assessing the feasibility of HSPC-based approaches to restore homeostasis in the intestinal tissue in refractory pediatric IBD.
- Evaluate the response to commensal-derived Ags (e.g., Bacteroides-derived peptides) of CD4+ T lymphocytes circulating by collecting the peripheral blood of IBD patients, non-IBD control patients, and healthy subjects as control. These results will indicate which Ag could be used for HSPC engineering and for inducing IL-10-producing regulatory T cells.
- Assess the ability of human HSPCs to promote Ag-specific Tr1 cells in vitro. To this end, selected IBD patients known to be responders commensal -derived Ags (as above) and peripheral blood will be collected at 1 year (6-18 months) follow-up. The investigators will engineer circulating HSPCs ex-vivo expanded from the peripheral blood of selected IBD patients and test for their ability to promote Ag-specific Tr1 cell upon in vitro culture with autologous CD4+ T cells.
研究类型
注册 (估计的)
联系人和位置
学习联系方式
- 姓名：Silvia Gregori, PhD
- 电话号码：+390226434894
- 邮箱：gregori.silvia@hsr.it
研究联系人备份
- 姓名：Laura Passerini, PhD
- 电话号码：+390226439303
- 邮箱：passerini.laura@hsr.it
学习地点
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Milan、意大利、20132
- Pediatric Immunohematology Unit, IRCCS Ospedale San Raffaele
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接触：
- Federica Barzaghi, MD
- 电话号码：+390226432979
- 邮箱：barzaghi.federica@hsr.it
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Rome、意大利、00189
- UOC Pediatria, Azienda Ospedaliero-Universitaria Sant'Andrea
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接触：
- Giovanni Di Nardo, MD
- 电话号码：+390633775971
- 邮箱：giovanni.dinardo@uniroma1.it
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参与标准
资格标准
适合学习的年龄
- 孩子
- 成人
接受健康志愿者
取样方法
研究人群
Eligible participants will be consecutively enrolled as they present to the clinical centers until the planned sample size is achieved.
The Study will include pediatric subjects, both males and females belonging to the following study populations:
- IBD patients: pediatric patients with chronic intestinal inflammation (i.e., inflammatory bowel disease (IBD), including Crohn Disease, Ulcerative Colitis) at diagnosis or follow-up (including responders to standard of care and refractory to treatment);
- Non-IBD patients: patients with rectal bleeding with a negative colonoscopy and the exclusion of any inflammatory disorders of the gastrointestinal tract;
- Healthy controls: healthy volunteers participating in the TIGET09 study protocol ("Collection of biological samples for the study of blood cells and their microenvironment, and for the development of novel therapeutic approaches for genetic diseases and cancer."), as control population.
描述
Inclusion Criteria:
For all groups:
- Written informed consent from parent(s)/legal guardian(s);
- Sex: Males and Females;
- Age: ≥2 years and <18 years.
For study group 1:
- Subjects with suspected or confirmed IBD diagnosis.
For study group 2:
- Subjects with rectal bleeding w/o inflammatory disorders of the gastrointestinal tract.
For study group 3:
- Written consent for participation to TIGET09 study protocol;
- healthy subjects, without known immunodeficiencies, autoimmune, inflammatory or genetic diseases, undergoing genetic, hematological, hematochemical, or HLA compatibility screenings and participating in the TIGET09 study protocol (Title: "Collection of biological samples for the study of blood cells and their microenvironment, and for the development of novel therapeutic approaches for genetic diseases and cancer").
Exclusion Criteria:
For all groups:
- Refusal or inability of the parent(s) or legal guardian(s) to provide written informed consent;
- Age: <2 years and ≥18 years;
- Presence of any medical, psychiatric, or clinical condition that, in the opinion of the clinician, may interfere with participation in the study or interpretation of the study results;
For study group 1:
- patients without IBD diagnosis or suspect;
For study group 2:
- Subjects without rectal bleeding or with known inflammatory/autoimmune disorders of the gastrointestinal tract.
For all groups:
- Refusal or inability of the parent(s) or legal guardian(s) to provide written informed consent;
- Age: <2 years and ≥18 years;
- Presence of any medical, psychiatric, or clinical condition that, in the opinion of the clinician, may interfere with participation in the study or interpretation of the study results;
For study group 1:
- patients without IBD diagnosis or suspect;
For study group 2:
- Subjects without rectal bleeding or with known inflammatory/autoimmune disorders of the gastrointestinal tract.
For study group 3:
- Lack of written consent for participation to TIGET09 study protocol;
- patients belonging to study groups 1 and 2; patients with immunodeficiencies, autoimmune, inflammatory or genetic diseases;
- subjects with signs of systemic inflammation.
学习计划
研究是如何设计的？
设计细节
队列和干预
团体/队列 |
干预/治疗 |
|---|---|
|
Study Group 1
IBD patients: pediatric patients with chronic intestinal inflammation (i.e., inflammatory bowel disease (IBD), including Crohn Disease, Ulcerative Colitis) at diagnosis or follow-up (including responders to standard of care and refractory to treatment)
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An additional volume of peripheral blood (3-10 ml) will be obtained in concomitance with clinically indicated procedures
A small fragment (1-5 mm) of intestinal tissue - residual or leftover material -will be obtained from patients undergoing diagnostic or follow-up endoscopy
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Study Group 2
Non-IBD patients: patients with rectal bleeding with a negative colonoscopy and the exclusion of any inflammatory disorders of the gastrointestinal tract
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An additional volume of peripheral blood (3-10 ml) will be obtained in concomitance with clinically indicated procedures
A small fragment (1-5 mm) of intestinal tissue - residual or leftover material -will be obtained from patients undergoing diagnostic or follow-up endoscopy
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Study Group 3
Healthy volunteers (controls)
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Peripheral blood samples from healthy subjects, leftover from TIGET09 protocol analysis will be collected
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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To characterize pediatric IBD patients' peripheral blood and intestinal mucosa immune cell composition
大体时间：Baseline timepoint
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Frequency (%) of predefined regulatory and inflammatory immune-cell subsets in peripheral blood and gut mucosa, including regulatory T cells (FOXP3+ Tregs and IL-10 producing Tr1 cells), T naïve/memory and effector cells, regulatory myeloid cells (DC-10), and inflammatory myeloid cells (cDC1 and cDC2), measured by flow cytometry. The primary objective will be considered met if patients with IBD show a lower frequency of IL-10-producing cells than controls, with the estimated between-group difference supporting a defect in IL-10-producing cell responses. |
Baseline timepoint
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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To explore the ability of HSPCs to induce in vitro the differentiation of Ag-specific Tr1 cells.
大体时间：Baseline and 1 year follow up
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Induction of Tr1-like cells following T-cell/HSPC co-culture, assessed by: frequency (%) of cells expressing the Tr1-associated phenotype and expression of Tr1-associated genes. Success criterion (exploratory): Generation of a T-cell population displaying Tr1-associated features. |
Baseline and 1 year follow up
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合作者和调查者
调查人员
- 首席研究员：Silvia Gregori, PhD、IRCCS Ospedale San Raffaele
- 首席研究员：Alessandro Aiuti, MD、IRCCS Ospedale San Raffaele
出版物和有用的链接
一般刊物
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- Hernandez-Malmierca P, Vonficht D, Schnell A, Uckelmann HJ, Bollhagen A, Mahmoud MAA, Landua SL, van der Salm E, Trautmann CL, Raffel S, Grunschlager F, Lutz R, Ghosh M, Renders S, Correia N, Donato E, Dixon KO, Hirche C, Andresen C, Robens C, Werner PS, Boch T, Eisel D, Osen W, Pilz F, Przybylla A, Klein C, Buchholz F, Milsom MD, Essers MAG, Eichmuller SB, Hofmann WK, Nowak D, Hubschmann D, Hundemer M, Thiede C, Bullinger L, Muller-Tidow C, Armstrong SA, Trumpp A, Kuchroo VK, Haas S. Antigen presentation safeguards the integrity of the hematopoietic stem cell pool. Cell Stem Cell. 2022 May 5;29(5):760-775.e10. doi: 10.1016/j.stem.2022.04.007.
- Omer-Javed A, Pedrazzani G, Albano L, Ghaus S, Latroche C, Manzi M, Ferrari S, Fiumara M, Jacob A, Vavassori V, Nonis A, Canarutto D, Naldini L. Mobilization-based chemotherapy-free engraftment of gene-edited human hematopoietic stem cells. Cell. 2022 Jun 23;185(13):2248-2264.e21. doi: 10.1016/j.cell.2022.04.039. Epub 2022 May 25.
- Capo V, Penna S, Merelli I, Barcella M, Scala S, Basso-Ricci L, Draghici E, Palagano E, Zonari E, Desantis G, Uva P, Cusano R, Sergi Sergi L, Crisafulli L, Moshous D, Stepensky P, Drabko K, Kaya Z, Unal E, Gezdirici A, Menna G, Serafini M, Aiuti A, Locatelli SL, Carlo-Stella C, Schulz AS, Ficara F, Sobacchi C, Gentner B, Villa A. Expanded circulating hematopoietic stem/progenitor cells as novel cell source for the treatment of TCIRG1 osteopetrosis. Haematologica. 2021 Jan 1;106(1):74-86. doi: 10.3324/haematol.2019.238261.
- Passeri L, Andolfi G, Bassi V, Russo F, Giacomini G, Laudisa C, Marrocco I, Cesana L, Di Stefano M, Fanti L, Sgaramella P, Vitale S, Ziparo C, Auricchio R, Barera G, Di Nardo G, Troncone R, Gianfrani C, Annoni A, Passerini L, Gregori S. Tolerogenic IL-10-engineered dendritic cell-based therapy to restore antigen-specific tolerance in T cell mediated diseases. J Autoimmun. 2023 Jul;138:103051. doi: 10.1016/j.jaut.2023.103051. Epub 2023 May 22.
- Cook L, Stahl M, Han X, Nazli A, MacDonald KN, Wong MQ, Tsai K, Dizzell S, Jacobson K, Bressler B, Kaushic C, Vallance BA, Steiner TS, Levings MK. Suppressive and Gut-Reparative Functions of Human Type 1 T Regulatory Cells. Gastroenterology. 2019 Dec;157(6):1584-1598. doi: 10.1053/j.gastro.2019.09.002. Epub 2019 Sep 10.
- Krawiec P, Pawlowska-Kamieniak A, Pac-Kozuchowska E. Interleukin 10 and interleukin 10 receptor in paediatric inflammatory bowel disease: from bench to bedside lesson. J Inflamm (Lond). 2021 Mar 10;18(1):13. doi: 10.1186/s12950-021-00279-3.
- Neurath MF, Sands BE, Rieder F. Cellular immunotherapies and immune cell depleting therapies in inflammatory bowel diseases: the next magic bullet? Gut. 2024 Dec 10;74(1):9-14. doi: 10.1136/gutjnl-2024-332919.
研究记录日期
研究主要日期
学习开始 (估计的)
初级完成 (估计的)
研究完成 (估计的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
与本研究相关的术语
关键字
其他研究编号
- RF-2024-12378919 (其他赠款/资助编号：Ministero della Salute - Bando Ricerca finalizzata 2024)
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