• Health and Nutrition

Haematopoiesis and Immunology (HEMATIM)

Research unit - UR 4666


HEMATIM is a young and dynamic team, created within the UPJV
in 2018. To study the regulatory mechanisms of normal and pathological immunohematopoiesis (renal failure, acute leukemia, chronic lymphocytic leukemia), HEMATIM uses fundamental models of in vitro stem cell differentiation.

Our approaches require the mastery of a large number of techniques,
including cell sorting, cytometry, biochemical studies, cloning, gene
expression modulation by lentiviral vectors, and transcriptomics by
The unit’s strategy is the permanent development of innovative tools, such as genome editing by CrispR-Cas for example, or flow imaging and digital PCR.


  • Loïc Garçon
  • Laurent METZINGER


Avenue Laënnec
80000 AMIENS


Haematopoiesis and Immunology


Effectif total : 18

Personnel de recherche : 16

Personnel d'appui à la recherche : 2



HEMATIM studies the mechanisms involved in normal and pathological hematopoiesis and lymphopoiesis.
The main themes of the unit are:
• normal and pathological erythropoiesis,
• calcium signalling in acute myeloblastic leukaemia,
• B lymphocyte differentiation and lymphoproliferative syndromes.

These themes use in vitro hematopoietic stem cell differentiation models, and are based on:
• cell sorting, flow cytometry and imaging, and immunofluorescence analyses,
• transcriptomic and proteomic analysis techniques.
• strategies for modulating the expression of genes
of interest by inducible lentiviral overexpression and knockdown by shRNA and microRNA, and genome

• Study of rare genetic diseases of erythropoiesis (Pr Garçon, Pr Da Costa, Dr Ouled-Haddou)
• Study of erythropoiesis during renal failure (Pr Metzinger and V. Metzinger-Le Meuth, MCU-HDR)
• Implications of microparticles in the physiopathology of renal transplant rejection (Dr N. Guillaume, MCUPH)
• Study of calcium signalling in acute myeloblastic leukaemia (Pr Garçon)
• Study of illegitimate Vk rearrangements in normal and pathological B lymphopoiesis (Pr Gubler)
• Study of lymphopoiesis during lymphoproliferative syndromes (Pr Marolleau)
• Functional studies of mutations associated with congenital heart rhythm disorders (Pr Rochette, Dr
• Study of the role of microRNAs in the anaemia of
chronic renal failure (Pr Metzinger and V. MetzingerLe Meuth, MCU-HDR)

Example(s) of projects

• Study of the role of microRNAs in the anaemia of chronic renal failure (Pr Metzinger)
• Study of the vk-vk rearrangement in acute myeloblastic leukaemia and normal lymphopoiesis
(Dr Gubler)
• Study of the role of vitamin C in apoptosis of chronic lymphocytic leukemia cells (Pr Marolleau)
• Role of GPX4 in human terminal erythropoiesis (Pr Garçon)
• Role of the mechanotransducer PIEZO1 in normal and leukemic hematopoiesis (Pr Garçon)
• Role of microparticles in graft rejection (Dr Guillaume)
• Pathophysiological mechanisms involved in Diamond-Blackfan anemia (Pr L. Da Costa)

Example(s) of publications

Vong P, Ouled-Haddou H, Garçon L. Histone Deacetylases Function in the Control of Early Hematopoiesis and Erythropoiesis. Int J Mol Sci. 2022 Aug 29;23(17):9790. doi: 10.3390/ijms23179790.PMID: 36077192. Review.

Demagny J, Roussel C, Le Guyader M, Guiheneuf E, Harrivel V, Boyer T, Diouf M, Dussiot M, Demont Y, Garçon L. Combining imaging flow cytometry and machine learning for high-throughput schistocyte quantification: A SVM classifier development and external validation cohort. EBioMedicine. 2022 Sep;83:104209. doi: 10.1016/j.ebiom.2022.104209. Epub 2022 Aug 17.PMID: 35986949

Recent advances in the pathophysiology of PIEZO1-related hereditary xerocytosis.
Jankovsky N, Caulier A, Demagny J, Guitton C, Djordjevic S, Lebon D, Ouled-Haddou H, Picard V, Garçon L. Am J Hematol. 2021 Aug 1;96(8):1017-1026. doi: 10.1002/ajh.26192. Epub 2021 May 3.PMID: 33848364 Review.

Ouled-Haddou H, Messaoudi K, Demont Y, Lopes Dos Santos R, Carola C, Caulier A, Vong P, Jankovsky N, Lebon D, Willaume A, Demagny J, Boyer T, Marolleau JP, Rochette J, Garçon L. A new role of glutathione peroxidase 4 during human erythroblast enucleation. Blood Adv. 2020 Nov 24;4(22):5666-5680.

Darwiche W, Gomila C, Ouled-Haddou H, Naudot M, Doualle C, Morel P, Nguyen-Khac F, Garçon L, Marolleau JP, Ghamlouch H. Ascorbic acid (vitamin C) synergistically enhances the therapeutic effect of targeted therapy in chronic lymphocytic leukemia.. J Exp Clin Cancer Res. 2020 Oct 28;39(1):228.

Brigant B, Demont Y, Ouled-Haddou H, Metzinger-Le Meuth V, Testelin S, Garçon L, Metzinger L, Rochette J. TRIM37 is highly expressed during mitosis in CHON-002 chondrocytes cell line and is regulated by miR-223. Bone. 2020 Aug;137:115393.

Caulier A, Jankovsky N, Demont Y, Ouled-Haddou H, Demagny J, Guitton C, Merlusca L, Lebon D, Vong P, Aubry A, Lahary A, Rose C, Gréaume S, Cardon E, Platon J, Ouadid-Ahidouch H, Rochette J, Marolleau JP, Picard V, Garçon L. PIEZO1 activation delays erythroid differentiation of normal and hereditary xerocytosis-derived human progenitor cells. Haematologica. 2020 Mar;105(3):610-622.

Services offers

Services provided

We provide services according to our expertise.

Consulting services

We provide consulting services according to our expertise.


• Cell culture with one L1, two L2 and one L3 access
• Cell sorter with 2 lasers
• Automated sorter on magnetic beads
• Flow cytometer 3 lasers / 8 colours
• Fluorescence microscope
• Western blot equipment
• Molecular biology: Q-PCR, NGS Fluidigm, digital PCR
• Gene expression study by NANOSTRING (agreement with Amiens-Picardie University Hospital)
• Access to ImageStream MKII flow imager (CHU Amiens-Picardie)
• Cloning equipment
• Plate reader


Affiliated institutions / organisations

Partner institution(s)


Doctoral schools

Regional strategic areas of activity

  • Health and Nutrition
    • Food ingredients
    • Medicine of the future: new health equipment and e-health
    • New therapeutic approaches
    • Prevention, well-being and the silver economy