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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03260452
Other study ID # RC31/15/7739
Secondary ID 2017-A01697-46
Status Completed
Phase N/A
First received
Last updated
Start date June 28, 2018
Est. completion date January 24, 2019

Study information

Verified date April 2019
Source University Hospital, Toulouse
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Based on solid preclinical results in mice and preliminary data in humans, this study aims to provide the proof of concept of the crucial role of the hematopoietic process occurring in human adipose tissue in the initiation of the inflammatory process at the origin of insulin resistance and type 2 diabetes (T2D). The main objective is to compare the number of pro-inflammatory macrophages derived from human adipose tissue hematopoietic stem cells (HSC) according to their origin, type 2 diabetes subjects or healthy volunteers.


Description:

In mice, increasing data demonstrate a causal relationship between the inflammatory process in adipose tissue and the development of insulin resistance, resulting in type 2 diabetes occurrence. However, the mechanisms mediating inflammation and its metabolic consequences are still unclear. In humans, recent publications have suggested an important interaction between the metabolic status and medullar hematopoietic activity. A preliminary study performed by the STROMAlab's research team has identified functional hematopoietic stem cells in human adipose tissue samples, indicating that adipose tissue-hematopoiesis is an active mechanism.

To determine whether an alteration in adipose tissue-hematopoiesis could be a hallmark of type 2 diabetes in human, biopsies of subcutaneous adipose tissue will be performed in 2 groups of 10 volunteers: overweight/obese type 2 diabetes subjects versus healthy volunteers, matched on age.

Then, hematopoietic stem cells extracted from human biopsies will be grafted into immunodeficient mice and after 12 weeks, flow cytometry using antibodies specific for human cell surface markers will be performed to quantify proinflammatory macrophages derived from human adipose tissue-hematopoietic stem cells.


Recruitment information / eligibility

Status Completed
Enrollment 20
Est. completion date January 24, 2019
Est. primary completion date January 24, 2019
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Male
Age group 37 Years to 63 Years
Eligibility Inclusion Criteria:

- No major weight variation for at least 3 months

- Biological assessment without clinically significant anomaly from the point of view of the investigator.

- Acceptance of constraints related to participation in the study

- Acceptance of participation in the constitution of a cell bank, a tissue bank and a serum library.

- Affiliation to a social security scheme.

Type 2 diabetic subjects:

- Type 2 diabetes (discovered after the age of 35 years, without inaugural ketosis and absence of insulin therapy during the first year).

- 40 to 60 year-old.

- BMI between 27 and 35 kg / m² (included).

- Treated by modification of lifestyle alone or associated to oral anti-diabetic therapy only.

- With stable oral anti-diabetic treatment for at least 3 months.

- HbA1c = 8.5%.

Healthy Volunteers:

- BMI between 23 and 27 kg / m² (included).

- 37 to 63 year-old, age-matched to a type 2 diabetes subject ± 5 years.

- Fasting blood glucose < 1,10 g / L.

- HbA1c within normal limits (4 to 6%).

Exclusion Criteria:

- Excessive chronic alcohol consumption (> 30 g / day or 210 g / week).

- Tobacco consumption> 10 cigarettes / day that cannot be stopped for 24 hours.

- Anti-diabetic treatments that require sub-cutaneous injections

- History of chronic or acute hematological pathology.

- Systemic or acute inflammatory pathology.

- Treatment with antiplatelet agents, non-steroidal anti-inflammatory drugs, glucocorticoids (excluding eye drops and sprays), or other immunosuppressive drugs.

- History of cancer (except basal cell carcinoma).

- Allergy to xylocaine or one of its derivatives.

- Any significant pathology at the discretion of the investigator.

- Any biological anomaly at the discretion of the investigator.

- Positive human immunodeficiency virus serology.

- Positive hepatitis B serology.

- Positive hepatitis C serology.

- Glomerular filtration rate less than 60 ml / min

- Aspartate aminotransferase or alanine aminotransferase higher than 2.5-fold the upper normal value.

- Hypertriglyceridemia > 2.5 g / l

- Person under the protection of justice, guardianship or curators.

- Subject involved in another research protocol or in an exclusion period from another research protocol.

- Cognitive disorder or mental pathology (at the discretion of the investigator).

Study Design


Related Conditions & MeSH terms


Intervention

Procedure:
Abdominal subcutaneous biopsies and Blood test
Abdominal subcutaneous biopsies and blood test for each volunteer.

Locations

Country Name City State
France CHU de Toulouse - Rangueil Toulouse

Sponsors (1)

Lead Sponsor Collaborator
University Hospital, Toulouse

Country where clinical trial is conducted

France, 

References & Publications (19)

Bour S, Caspar-Bauguil S, Iffiú-Soltész Z, Nibbelink M, Cousin B, Miiluniemi M, Salmi M, Stolen C, Jalkanen S, Casteilla L, Pénicaud L, Valet P, Carpéné C. Semicarbazide-sensitive amine oxidase/vascular adhesion protein-1 deficiency reduces leukocyte infiltration into adipose tissue and favors fat deposition. Am J Pathol. 2009 Mar;174(3):1075-83. doi: 10.2353/ajpath.2009.080612. Epub 2009 Feb 13. — View Citation

Brooks-Worrell B, Narla R, Palmer JP. Biomarkers and immune-modulating therapies for type 2 diabetes. Trends Immunol. 2012 Nov;33(11):546-53. doi: 10.1016/j.it.2012.07.002. Epub 2012 Aug 14. Review. — View Citation

Cancello R, Clément K. Is obesity an inflammatory illness? Role of low-grade inflammation and macrophage infiltration in human white adipose tissue. BJOG. 2006 Oct;113(10):1141-7. Epub 2006 Aug 10. Review. — View Citation

Caspar-Bauguil S, Cousin B, Bour S, Casteilla L, Penicaud L, Carpéné C. Adipose tissue lymphocytes: types and roles. J Physiol Biochem. 2009 Dec;65(4):423-36. doi: 10.1007/BF03185938. Review. Erratum in: J Physiol Biochem. 2011 Sep;67(3):497. Castiella, L [corrected to Casteilla, L]. — View Citation

Casteilla L, Planat-Benard V, Laharrague P, Cousin B. Adipose-derived stromal cells: Their identity and uses in clinical trials, an update. World J Stem Cells. 2011 Apr 26;3(4):25-33. doi: 10.4252/wjsc.v3.i4.25. — View Citation

Cousin B, André M, Arnaud E, Pénicaud L, Casteilla L. Reconstitution of lethally irradiated mice by cells isolated from adipose tissue. Biochem Biophys Res Commun. 2003 Feb 21;301(4):1016-22. — View Citation

Dalmas E, Tordjman J, Guerre-Millo M, Clément K. [Adipose tissue, a new playground for immune cells]. Med Sci (Paris). 2011 Nov;27(11):993-9. doi: 10.1051/medsci/20112711016. Epub 2011 Nov 30. Review. French. — View Citation

Han J, Koh YJ, Moon HR, Ryoo HG, Cho CH, Kim I, Koh GY. Adipose tissue is an extramedullary reservoir for functional hematopoietic stem and progenitor cells. Blood. 2010 Feb 4;115(5):957-64. doi: 10.1182/blood-2009-05-219923. Epub 2009 Nov 6. — View Citation

Ito R, Takahashi T, Katano I, Ito M. Current advances in humanized mouse models. Cell Mol Immunol. 2012 May;9(3):208-14. doi: 10.1038/cmi.2012.2. Epub 2012 Feb 13. Review. — View Citation

Nagareddy PR, Murphy AJ, Stirzaker RA, Hu Y, Yu S, Miller RG, Ramkhelawon B, Distel E, Westerterp M, Huang LS, Schmidt AM, Orchard TJ, Fisher EA, Tall AR, Goldberg IJ. Hyperglycemia promotes myelopoiesis and impairs the resolution of atherosclerosis. Cell Metab. 2013 May 7;17(5):695-708. doi: 10.1016/j.cmet.2013.04.001. — View Citation

Nikolajczyk BS, Jagannathan-Bogdan M, Denis GV. The outliers become a stampede as immunometabolism reaches a tipping point. Immunol Rev. 2012 Sep;249(1):253-75. doi: 10.1111/j.1600-065X.2012.01142.x. Review. — View Citation

Poglio S, De Toni F, Lewandowski D, Minot A, Arnaud E, Barroca V, Laharrague P, Casteilla L, Cousin B. In situ production of innate immune cells in murine white adipose tissue. Blood. 2012 Dec 13;120(25):4952-62. doi: 10.1182/blood-2012-01-406959. Epub 2012 Oct 15. — View Citation

Poglio S, De Toni-Costes F, Arnaud E, Laharrague P, Espinosa E, Casteilla L, Cousin B. Adipose tissue as a dedicated reservoir of functional mast cell progenitors. Stem Cells. 2010 Nov;28(11):2065-72. doi: 10.1002/stem.523. — View Citation

Prunet-Marcassus B, Cousin B, Caton D, André M, Pénicaud L, Casteilla L. From heterogeneity to plasticity in adipose tissues: site-specific differences. Exp Cell Res. 2006 Apr 1;312(6):727-36. Epub 2005 Dec 28. — View Citation

Richardson VR, Smith KA, Carter AM. Adipose tissue inflammation: feeding the development of type 2 diabetes mellitus. Immunobiology. 2013 Dec;218(12):1497-504. doi: 10.1016/j.imbio.2013.05.002. Epub 2013 May 16. Review. — View Citation

Shapiro H, Lutaty A, Ariel A. Macrophages, meta-inflammation, and immuno-metabolism. ScientificWorldJournal. 2011;11:2509-29. doi: 10.1100/2011/397971. Epub 2011 Dec 28. Review. — View Citation

Spinetti G, Cordella D, Fortunato O, Sangalli E, Losa S, Gotti A, Carnelli F, Rosa F, Riboldi S, Sessa F, Avolio E, Beltrami AP, Emanueli C, Madeddu P. Global remodeling of the vascular stem cell niche in bone marrow of diabetic patients: implication of the microRNA-155/FOXO3a signaling pathway. Circ Res. 2013 Feb 1;112(3):510-22. doi: 10.1161/CIRCRESAHA.112.300598. Epub 2012 Dec 18. — View Citation

Weisberg SP, McCann D, Desai M, Rosenbaum M, Leibel RL, Ferrante AW Jr. Obesity is associated with macrophage accumulation in adipose tissue. J Clin Invest. 2003 Dec;112(12):1796-808. — View Citation

Xu H, Barnes GT, Yang Q, Tan G, Yang D, Chou CJ, Sole J, Nichols A, Ross JS, Tartaglia LA, Chen H. Chronic inflammation in fat plays a crucial role in the development of obesity-related insulin resistance. J Clin Invest. 2003 Dec;112(12):1821-30. — View Citation

* Note: There are 19 references in allClick here to view all references

Outcome

Type Measure Description Time frame Safety issue
Primary Number of pro-inflammatory macrophages derived from human adipose tissue in mice transplanted with adipose tissue-hematopoietic stem cells . The investigators expect that the number of pro-inflammatory macrophages derived from human adipose tissue will be significantly higher in mice transplanted with adipose tissue-hematopoietic stem cells isolated from diabetic subjects compared to those from healthy volunteers. Day 3 - Day 45
Secondary Comparison of hematopoietic activity in vitro between both groups of subjects. Evaluated by flow cytometry. Day 3 - Day 45
Secondary Comparison of the number of the other cell types derived from the human adipose tissue-hematopoietic stem cells between both groups of grafted mice. Evaluated by flow cytometry. Day 3 - Day 45
Secondary Comparison of the phenotype of the other cell types derived from the human adipose tissue-hematopoietic stem cells between both groups of grafted mice. Evaluated by flow cytometry. Day 3 - Day 45
Secondary Comparison of the expression of genes coding for human inflammatory molecules in the adipose tissue of transplanted mice. Evaluated by Real-Time Quantitative Reverse Transcription Polymerase Chain Reaction. Main parameters analysed : Interleukin-6, Interleukin-1béta, Plasminogen activator inhibitor-1, Monocyte Chemoattractant Protein-1. Day 3 - Day 45
Secondary Comparison of the metabolic profile of the transplanted mice evaluated by the grafted mice's glycemia. According to the origin of the grafted hematopoietic stem cells (diabetic or healthy voluntary subjects). Day 3 - Day 45
Secondary Comparison of the metabolic profile of the transplanted mice evaluated by the grafted mice's insulinemia. According to the origin of the grafted hematopoietic stem cells (diabetic or healthy voluntary subjects). Day 3 - Day 45
Secondary Comparison of the metabolic profile of the transplanted mice evaluated by the grafted mice's oral glucose tolerance test. According to the origin of the grafted hematopoietic stem cells (diabetic or healthy voluntary subjects). Day 3 - Day 45
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