Article (Scientific journals)
A paracrine interaction between granulosa cells and leukocytes in the preovulatory follicle causes the increase in follicular G-CSF levels
NOEL, Laure; Fransolet, Maïté; Jacobs, Nathalie et al.
2020In Journal of Assisted Reproduction and Genetics, 37, p. 405-416
Peer reviewed
 

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Keywords :
G-CSF; Leukocytes; Granulosa cells; Ovary; Ovulation
Abstract :
[en] OBJECTIVE: Follicular granulocyte colony-stimulating factor (G-CSF) is a new biomarker of oocyte quality and embryo implantation in in vitro fertilization (IVF) cycles. Its role in reproduction is poorly understood. Our study aimed to investigate the mechanisms and cells responsible for G-CSF production in the preovulatory follicle. DESIGN: Laboratory research study. SETTING: Single-center study. INTERVENTIONS: Granulosa cells and leukocytes were isolated from the follicular fluids (FF) or the blood of women undergoing IVF and from the blood of a control group of women with spontaneous ovulatory cycles to perform cocultures. MAIN OUTCOME MEASURE: G-CSF-secreted protein was quantified in the conditioned media of cocultures. RESULTS: G-CSF secretion was considerably increased in cocultures of granulosa cells and leukocytes. This effect was maximal when leukocytes were isolated from the blood of women in the late follicular phase of the menstrual cycle or from the FF of women undergoing IVF. The leukocyte population isolated from the FF samples of women undergoing IVF had a higher proportion of granulocytes than that isolated from the corresponding blood samples. Leukocytes induced the synthesis and secretion of G-CSF by granulosa cells. Among a range of other FF cytokines/chemokines, only growth-regulated oncogene alpha (GROalpha) was also increased. CONCLUSION: The notable rise in G-CSF at the time of ovulation coincides with the accumulation of follicular granulocytes, which stimulate G-CSF production by granulosa cells via paracrine interactions. High follicular G-CSF concentrations may occur in follicles with optimal granulosa-leukocyte interactions, which could explain the increased implantation rate of embryos arising from these follicles.
Disciplines :
Reproductive medicine (gynecology, andrology, obstetrics)
Author, co-author :
NOEL, Laure ;  Centre Hospitalier Universitaire de Liège - CHU > Département de gynécologie-obstétrique > Service de gynécologie-obstétrique (CHR)
Fransolet, Maïté ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Jacobs, Nathalie  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Virologie
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Département des sciences cliniques
Nisolle, Michelle ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique
Munaut, Carine  ;  Université de Liège - ULiège > Cancer-Tumours and development biology
Language :
English
Title :
A paracrine interaction between granulosa cells and leukocytes in the preovulatory follicle causes the increase in follicular G-CSF levels
Publication date :
2020
Journal title :
Journal of Assisted Reproduction and Genetics
ISSN :
1058-0468
eISSN :
1573-7330
Volume :
37
Pages :
405-416
Peer reviewed :
Peer reviewed
Commentary :
2020/01/20
Available on ORBi :
since 20 February 2020

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