PMID- 35532241 OWN - NLM STAT- MEDLINE DCOM- 20221229 LR - 20221229 IS - 1940-087X (Electronic) IS - 1940-087X (Linking) IP - 182 DP - 2022 Apr 21 TI - Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects. LID - 10.3791/63790 [doi] AB - The conventional semen parameter analysis is widely used to assess male fertility. However, studies have found that ~15% of infertile patients show no abnormalities in conventional semen parameters. Additional technologies are needed to explain the idiopathic infertility and detect subtle sperm defects. Currently, biomarkers of sperm function, including sperm apoptosis, mitochondrial membrane potential (MMP), and DNA damage, reveal sperm physiology at the molecular level and are capable of predicting male fertility. With flow cytometry (FCM) techniques, each of these markers can be rapidly, accurately, and precisely measured in human semen samples, but time costs substantially increase and results could be obstructed if all the biomarkers need to be tested with a single cytometer. In this protocol, after collection and immediate incubation at 37 degrees C for liquefication, semen samples were further analyzed for sperm apoptosis using Annexin V-fluorescein isothiocyanate (FITC)/propidium iodide (PI) staining. The MMP was labeled with 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethyl-benzimidazolylcarbocyanine iodide (JC-1) probe, and DNA damage was assessed using the sperm chromatin structure assay (SCSA) with acridine orange (AO) staining. Thus, flow cytometric analysis of sperm function markers can be a practical and reliable toolkit for the diagnosis of infertility and evaluation of sperm function at both bench and bed. FAU - Ling, Xi AU - Ling X AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Zou, Peng AU - Zou P AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Ao, Lin AU - Ao L AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Zhou, Niya AU - Zhou N AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Wang, Xiaogang AU - Wang X AD - Department of Chemical Defense Medicine, College of Military Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Sun, Lei AU - Sun L AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Yang, Huan AU - Yang H AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Liu, Jinyi AU - Liu J AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Cao, Jia AU - Cao J AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University). FAU - Chen, Qing AU - Chen Q AD - Institute of Toxicology, College of Preventive Medicine, Army Medical University (Third Military Medical University); chenqingforward@gmail.com. LA - eng PT - Journal Article PT - Video-Audio Media DEP - 20220421 PL - United States TA - J Vis Exp JT - Journal of visualized experiments : JoVE JID - 101313252 RN - 0 (Biomarkers) RN - 0 (Chromatin) SB - IM MH - Humans MH - Male MH - Biomarkers MH - Chromatin MH - Flow Cytometry/methods MH - *Infertility MH - *Spermatozoa EDAT- 2022/05/10 06:00 MHDA- 2022/05/12 06:00 CRDT- 2022/05/09 09:04 PHST- 2022/05/09 09:04 [entrez] PHST- 2022/05/10 06:00 [pubmed] PHST- 2022/05/12 06:00 [medline] AID - 10.3791/63790 [doi] PST - epublish SO - J Vis Exp. 2022 Apr 21;(182). doi: 10.3791/63790.