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Ding Y, Chen S, Jin J, Sun Y, Chu C, Kee K, Xin M, Li L. POI-associated EIF4ENIF1 mutations exhibit impaired translation regulation abilities. Gene 2024; 917:148456. [PMID: 38604507 DOI: 10.1016/j.gene.2024.148456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/24/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024]
Abstract
Various genetic variants have been found to be associated with the clinical onset of premature ovarian insufficiency (POI). However, when measured in vitro, the functional influence of the variants can be difficult to determine. By whole-exome sequencing (WES) of 93 patients with sporadic POI, we found a missense variant c.623G > A;p.R208H in the EIF4ENIF1 gene. In silico prediction of the variant using different algorithms suggested it might be a damaging variant. We compared the property of EIF4ENIF1 R208H and Q842P, a POI-related mutant that we reported previously, with wildtype (WT) protein using 293FT cells in vitro. Surprisingly, a change in subcellular distribution and granule forming ability (Q842P) and nuclear import capacity (R208H) was not observed, despite domain prediction evidences. Since EIF4ENIF1 was reported to inhibit translation, we employed T&T-seq, a translation-transcription dual-omics sequencing method, to profile gene expression upon overexpression of EIF4ENIF1 WT and mutants. EIF4ENIF1 WT overexpression group exhibited significantly (P < 0.0001) lower translation efficiency (TE) than empty vector or GFP overexpression control group. Surprisingly, EIF4ENIF1 Q842P overexpression failed to repress global translation, showing an overall TE significantly higher than WT group. Overexpression R208H significantly (P < 0.0001) lowered the overall TE, whereas exhibiting a reduced translation inhibitory effect on high-TE genes (TE > 2 in GFP control group). Several fertility-associated genes, such as AMH in Q842P group and SERPINE1 and THBS1 in R208H group, was translationally up-regulated in mutant groups versus WT control, suggesting a potential mechanism of mutated EIF4ENIF1 causing POI via impaired translation repression. It is further proposed that T&T-seq can be a sensitive evaluation tool for the measurement of functional alteration by variants in many other translational regulator genes, not only EIF4ENIF1, helping to eliminate misinterpretation of clinical significance of genetic variants.
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Affiliation(s)
- Yuxi Ding
- The State Key Laboratory for Complex, Severe, and Rare Diseases, SXMU-Tsinghua Collaborative Innovation Center for Frontier Medicine, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Shuya Chen
- Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital. Beijing 100006, China
| | - Jing Jin
- Department of Gynecological Endocrinology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing 100026, China
| | - Yujun Sun
- Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital. Beijing 100006, China
| | - Chunfang Chu
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital. Beijing 100026, China
| | - Kehkooi Kee
- The State Key Laboratory for Complex, Severe, and Rare Diseases, SXMU-Tsinghua Collaborative Innovation Center for Frontier Medicine, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Mingwei Xin
- Department of Traditional Chinese Medicine, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing 100026, China.
| | - Lin Li
- Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital. Beijing 100006, China.
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Shang L, Ren S, Yang X, Zhang F, Jin L, Zhang X, Wu Y. EIF4ENIF1 variants in two patients with non-syndromic premature ovarian insufficiency. Eur J Med Genet 2022; 65:104597. [PMID: 36030004 DOI: 10.1016/j.ejmg.2022.104597] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 07/24/2022] [Accepted: 08/21/2022] [Indexed: 11/30/2022]
Abstract
Premature ovarian insufficiency (POI) is a major cause of female subfertility. Although POI affects approximately 1-2% women worldwide, the etiology of a large number of POI patients remains unknown partially due to the genetic heterogeneity of POI. EIF4ENIF1 is one of the known POI-causative genes, and it plays an essential role in inhibiting mRNA translation and regulating mRNA destabilization in ovarian cells. In our study, two EIF4ENIF1 variants, c.9_11delGAG (p.R4del) (rs3834682) and c.2861G > C (p.G954A) (rs766008983) were identified in two sporadic Han Chinese POI patients through whole-exome sequencing. Both variants are rare in the human population. The two patients' mothers don't carry the rare variants and they have regular menstruation. The missense variant c.2861G > C was predicted to be deleterious by multiple bioinformatic tools. Western blot analysis further demonstrated that both of the two variants exhibited reduced mRNA and protein expression levels compared with the wild-type in vitro. Taken together, our findings reported two rare POI-associated EIF4ENIF1 variants, providing insights into genetic counseling and suggesting the contribution of EIF4ENIF1 variants in female infertility.
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Affiliation(s)
- Lingyue Shang
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), School of Life Sciences, Fudan University, Shanghai, 200011, China
| | - Shuting Ren
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), School of Life Sciences, Fudan University, Shanghai, 200011, China
| | - Xi Yang
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), School of Life Sciences, Fudan University, Shanghai, 200011, China
| | - Feng Zhang
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), School of Life Sciences, Fudan University, Shanghai, 200011, China; Institute of Metabolism and Integrative Biology, Fudan University, Shanghai, 200439, China; Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai, 200011, China
| | - Li Jin
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), School of Life Sciences, Fudan University, Shanghai, 200011, China; Institute of Metabolism and Integrative Biology, Fudan University, Shanghai, 200439, China
| | - Xiaojin Zhang
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), School of Life Sciences, Fudan University, Shanghai, 200011, China; Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai, 200011, China.
| | - Yanhua Wu
- Obstetrics and Gynecology Hospital, NHC Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), School of Life Sciences, Fudan University, Shanghai, 200011, China; National Demonstration Center for Experimental Biology Education, School of Life Sciences, Fudan University, Shanghai, 200433, China.
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Zhao M, Feng F, Chu C, Yue W, Li L. A novel EIF4ENIF1 mutation associated with a diminished ovarian reserve and premature ovarian insufficiency identified by whole-exome sequencing. J Ovarian Res 2019; 12:119. [PMID: 31810472 PMCID: PMC6896303 DOI: 10.1186/s13048-019-0595-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 11/26/2019] [Indexed: 01/03/2023] Open
Abstract
Background To dissect the genetic causes underlying diminished ovarian reserve (DOR) and premature ovarian insufficiency (POI) within a family. Methods Whole-exome sequencing of the proband was performed and DOR and Sanger sequencing was carried out to validate presence of the variant in the proband and her mother. In silico algorithms were used to analyze the mutational effect of the variant. PSIPRED (PSI-blast based secondary structure PREDiction) was used for predicting mutated protein secondary structures. Results Using whole-exome sequencing, we found that the proband carries the mutation c.2525A > C;p.Q842P in EIF4ENIF, a POI-related gene. Through Sanger sequencing, we found that the proband’s mother also carries the same mutation. Online bioinformatics analysis suggests that the mutation is a pathogenic mutation. Secondary structural biology prediction analysis indicates that the mutation either causes the destruction of the α-helical structure around the mutation site or reduces the α-helix. Conclusions This mutation is the second novel mutation of EIF4ENIF1 that has been identified in POI patients. This study thus provides a theoretical basis for POI genetics and POI clinical genetic counseling.
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Affiliation(s)
- Minying Zhao
- Department of Reproductive Medicine, The First Hospital of Shijiazhuang, 36 Fanxi Road, Shijiazhuang, 050011, Hebei, China.
| | - Fan Feng
- Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Haidian, Beijing, 100084, China
| | - Chunfang Chu
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Chaoyang, Beijing, 100026, China
| | - Wentao Yue
- Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Chaoyang, Beijing, 100026, China
| | - Lin Li
- Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Chaoyang, Beijing, 100026, China.
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