Biallelic mutations in ARMC12 cause asthenozoospermia and multiple midpiece defects in humans and mice
© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ..
BACKGROUND: Asthenozoospermia is a major factor contributing to male infertility. The mitochondrial sheath (MS), an important organelle in the midpiece of spermatozoa, is crucial to sperm motility. ARMC12 is a mitochondrial peripheral membrane protein. Deletion of Armc12 impairs the arrangement of MS and causes infertility in mice. However, the role of ARMC12 in human asthenozoospermia remains unknown.
OBJECTIVE: To study the genetic defects in patients with asthenozoospermia.
METHODS: A total of 125 patients with asthenozoospermia and 120 men with proven fertility were recruited. Whole-exome sequencing and Sanger sequencing were performed for genetic analysis. Papanicolaou staining, HE staining, immunofluorescent staining, transmission electron microscopy and field emission scanning electron microscopy were employed to observe the morphological and structural defects of the spermatozoa and testes. Armc12-knockout mice were generated using the CRISPR-Cas9 system. Intracytoplasmic sperm injection was used to treat the patients.
RESULTS: Biallelic ARMC12 mutations were identified in three patients, including homozygous mutations in two siblings from a consanguineous family and compound heterozygous mutations in one sporadic patient. ARMC12 is mainly expressed in the midpiece of elongated and late spermatids in the human testis. The patients' spermatozoa displayed multiple midpiece defects, including absent MS and central pair, scattered or forked axoneme and incomplete plasma membrane. Spermatozoa from Armc12-/- mice showed parallel defects in the midpiece. Moreover, two patients were treated with intracytoplasmic sperm injection and achieved good outcomes.
CONCLUSION: Our findings prove for the first time that defects in ARMC12 cause asthenozoospermia and multiple midpiece defects in humans.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:60 |
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| Enthalten in: |
Journal of medical genetics - 60(2023), 2 vom: 09. Feb., Seite 154-162 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liu, Wensheng [VerfasserIn] |
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| Links: |
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| Themen: |
ARMC12 protein, human |
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| Anmerkungen: |
Date Completed 27.01.2023 Date Revised 24.02.2023 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1136/jmedgenet-2021-108137 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 100 | 1 | |a Liu, Wensheng |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Biallelic mutations in ARMC12 cause asthenozoospermia and multiple midpiece defects in humans and mice |
| 264 | 1 | |c 2023 | |
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| 500 | |a Date Revised 24.02.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ. | ||
| 520 | |a BACKGROUND: Asthenozoospermia is a major factor contributing to male infertility. The mitochondrial sheath (MS), an important organelle in the midpiece of spermatozoa, is crucial to sperm motility. ARMC12 is a mitochondrial peripheral membrane protein. Deletion of Armc12 impairs the arrangement of MS and causes infertility in mice. However, the role of ARMC12 in human asthenozoospermia remains unknown | ||
| 520 | |a OBJECTIVE: To study the genetic defects in patients with asthenozoospermia | ||
| 520 | |a METHODS: A total of 125 patients with asthenozoospermia and 120 men with proven fertility were recruited. Whole-exome sequencing and Sanger sequencing were performed for genetic analysis. Papanicolaou staining, HE staining, immunofluorescent staining, transmission electron microscopy and field emission scanning electron microscopy were employed to observe the morphological and structural defects of the spermatozoa and testes. Armc12-knockout mice were generated using the CRISPR-Cas9 system. Intracytoplasmic sperm injection was used to treat the patients | ||
| 520 | |a RESULTS: Biallelic ARMC12 mutations were identified in three patients, including homozygous mutations in two siblings from a consanguineous family and compound heterozygous mutations in one sporadic patient. ARMC12 is mainly expressed in the midpiece of elongated and late spermatids in the human testis. The patients' spermatozoa displayed multiple midpiece defects, including absent MS and central pair, scattered or forked axoneme and incomplete plasma membrane. Spermatozoa from Armc12-/- mice showed parallel defects in the midpiece. Moreover, two patients were treated with intracytoplasmic sperm injection and achieved good outcomes | ||
| 520 | |a CONCLUSION: Our findings prove for the first time that defects in ARMC12 cause asthenozoospermia and multiple midpiece defects in humans | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Genetic Variation | |
| 650 | 4 | |a Genetics | |
| 650 | 4 | |a Genetics, Medical | |
| 650 | 4 | |a Human Genetics | |
| 650 | 4 | |a Reproductive medicine | |
| 650 | 7 | |a ARMC12 protein, human |2 NLM | |
| 650 | 7 | |a Armadillo Domain Proteins |2 NLM | |
| 700 | 1 | |a Wei, Xiaoli |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Xiaoyan |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Gaowen |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Xiaoya |e verfasserin |4 aut | |
| 700 | 1 | |a Liang, Xiaomei |e verfasserin |4 aut | |
| 700 | 1 | |a Isachenko, Vladimir |e verfasserin |4 aut | |
| 700 | 1 | |a Sha, Yanwei |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Yifeng |e verfasserin |4 aut | |
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