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Chromosome Screening of Human Preimplantation Embryos by Using Spent Culture Medium: Sample Collection and Chromosomal Ploidy Analysis
Published on: September 7, 2021
[Detection of DPY19L2 gene mutation in a globozoospermia patient]
Qiu-Yue Wu1, Na Li2, Tian-Fu Li2
1PLA Research Institute of Clinical Laboratory Medicine, Nanjing General Hospital of Nanjing Military Region, Nanjing, Jiangsu 210002, China. wqyhappy2008@126.com
Objective:
Globozoospermia is mostly associated with homozygous deletion of the DPY19L2 gene. This study aimed to investigate the DPY19L2 gene mutation in a globozoospermia patient.
Methods:
We observed the sperm histomorphology of a patient with globozoospermia using Wright-Giemsa's staining and transmission electron microscopy, detected the mutation of the DPY19L2 gene by PCR amplification and DNA sequencing, and compared the findings with the sequences issued in the Genbank.
Results:
Wright-Giemsa's staining showed that all the spermatozoa were round-headed and lacked the acrosome, with the head nucleus darkly, fully and densely stained. Transmission electron microscopy revealed larger round sperm heads, with an even layer of unit membrane surrounding the nuclei and dispersed cytoplasmic vacuoles but no acrosomal structure. No DPY19L2 gene mutation was found by PCR amplification and DNA sequencing.
Conclusion:
No homozygous mutation of the DPY19L2 gene was found in the globozoospermia patient, and therefore some other disease-causing genes might be involved.
