中山大学附属第六医院生殖医学中心,广东 广州 510655
周怡,硕士研究生,研究方向:生殖医学,E-mail: zhouy236@mail2.susy.edu.cn
纸质出版日期:2021-03-20,
收稿日期:2020-12-29,
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周怡,李婷婷,郭映纯等.卵泡液中神经营养因子4及卵丘细胞TrkB受体与卵子发育潜能的关系[J].中山大学学报(医学科学版),2021,42(02):257-265.
ZHOU Yi,LI Ting-ting,GUO Ying-chun,et al.Relationship between Follicular-fluid Neurotrophin-4, TrkB Receptors in Cumulus Cells and Oocyte Developmental Competence[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(02):257-265.
周怡,李婷婷,郭映纯等.卵泡液中神经营养因子4及卵丘细胞TrkB受体与卵子发育潜能的关系[J].中山大学学报(医学科学版),2021,42(02):257-265. DOI:
ZHOU Yi,LI Ting-ting,GUO Ying-chun,et al.Relationship between Follicular-fluid Neurotrophin-4, TrkB Receptors in Cumulus Cells and Oocyte Developmental Competence[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(02):257-265. DOI:
目的
2
探索人卵泡液中神经营养因子4(NT-4)及卵丘颗粒细胞中TrkB受体的表达与卵子发育潜能的关系。
方法
2
收集2020年5月至2020年11月在中山大学附属第六医院生殖中心,因男方因素行卵胞浆内单精子注射(ICSI)治疗的63例患者的卵泡液和卵丘颗粒细胞,用ELISA检测卵泡液中NT-4水平,实时荧光定量PCR检测卵丘颗粒细胞中TrkB受体两种不同亚型TrkB-fl和TrkB-t1的表达水平,分析与卵子成熟、受精和胚胎发育的关系。
结果
2
卵泡液中NT-4水平与正常受精数(
r
s
=0.250,
P
=0.048)、可利用胚胎数(
r
s
=0.320,
P
=0.011)、优质胚胎数(
r
s
=0.327,
P
=0.009)和优质囊胚数(
r
s
=0.303,
P
=0.029)呈正相关。卵丘颗粒细胞中TrkB-t1在高囊胚形成率组(≥60%)和高优质囊胚率组(≥50%)中的表达均较低[0.86 (0.60, 1.85)
vs.
2.29 (1.09, 3.44) ,
P
=0.008; 0.84(0.64, 1.45)
vs.
1.73 (0.96, 3.14) ,
P
=0.031]。多重线性回归分析结果示优质胚胎数受获卵数(
P=
0.001)、卵泡液中NT-4水平(
P=
0.005)和卵丘颗粒细胞TrkB-t1表达水平(
P=
0.049)影响。
结论
2
人卵泡液中NT-4水平与ICSI患者卵子发育潜能正相关,其可能在卵子发育过程中发挥着重要作用。卵丘颗粒细胞中TrkB-t1的高表达与卵子发育潜能受损有关。
Objective
2
To investigate whether the neurotrophin-4 (NT-4) in human follicular fluid (FF) and the expression of tropomyosin-related kinase B (TrkB) receptors in cumulus cells (CCs) have any correlation with the developmental competence of oocytes.
Method
2
FF and CCs were collected from 63 patients undergoing intracytoplasmic sperm injection (ICSI) in the Reproductive Medicine Center from May to November 2020. NT-4 level in FF was measured by enzyme-linked immunosorbent assay (ELISA) method. The expression levels of two major TrkB isoforms, the full-length receptor (TrkB-fl) and the truncated receptor (TrkB-t1), were quantified in CCs by real-time PCR. The correlation of oocyte maturation, fertilization and embryo development with NT-4 level in FF, TrkB-fl and TrkB-t1 expression in CCs were analyzed.
Results
2
NT-4 level in human FF was positively correlated with the number of normally fertilized oocytes (
r
s
=0.250,
P
=0.048), available embryos (
r
s
=0.320,
P
=0.011), top-quality embryos (
r
s
=0.327,
P
=0.009) and top-quality blastocysts (
r
s
=0.303,
P
=0.029). The expression level of TrkB-t1 gene in CCs was negatively associated with a higher blastocyst formation rate (≥60%) and top-quality blastocyst rate (≥50%) [0.86 (0.60, 1.85)
vs.
2.29 (1.09, 3.44),
P
=0.008; 0.84 (0.64, 1.45)
vs.
1.73 (0.96, 3.14),
P
=0.031]. Multiple linear regression analysis showed that the number of top-quality embryos was affected by the number of oocytes retrieved (
P=
0.001), FF NT-4 level (
P=
0.005) and the expression of TrkB-t1 gene in CCs (
P=
0.049).
Conclusion
2
FF NT-4 level was positively associated with oocyte developmental competence, and it might play an important role in the development of oocytes. Over-expressed TrkB-t1 in CCs might be related to compromised oocyte developmental potential.
神经营养因子-4酪氨酸相关激酶B受体卵泡液卵丘颗粒细胞卵子质量
neurotrophin-4 (NT-4)tropomyosin-related kinase B (TrkB) receptorfollicular fluid (FF)cumulus cells (CCs)oocyte competence
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