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Moreno-Irusta A, Dominguez EM, Iqbal K, Zhang X, Wang N, Soares MJ. TAF7L regulates early stages of male germ cell development in the rat. FASEB J 2024; 38:e23376. [PMID: 38112167 DOI: 10.1096/fj.202301716rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/14/2023] [Accepted: 12/04/2023] [Indexed: 12/20/2023]
Abstract
Male germ cell development is dependent on the orchestrated regulation of gene networks. TATA-box binding protein associated factors (TAFs) facilitate interactions of TATA-binding protein with the TATA element, which is known to coordinate gene transcription during organogenesis. TAF7 like (Taf7l) is situated on the X chromosome and has been implicated in testis development. We examined the biology of TAF7L in testis development using the rat. Taf7l was prominently expressed in preleptotene to leptotene spermatocytes. To study the impact of TAF7L on the testis we generated a global loss-of-function rat model using CRISPR/Cas9 genome editing. Exon 3 of the Taf7l gene was targeted. A founder was generated possessing a 110 bp deletion within the Taf7l locus, which resulted in a frameshift and the premature appearance of a stop codon. The mutation was effectively transmitted through the germline. Deficits in TAF7L did not adversely affect pregnancy or postnatal survival. However, the Taf7l disruption resulted in male infertility due to compromised testis development and failed sperm production. Mutant germ cells suffer meiotic arrest at late zygotene/early pachynema stages, with defects in sex body formation. This testis phenotype was more pronounced than previously described for the subfertile Taf7l null mouse. We conclude that TAF7L is essential for male germ cell development in the rat.
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Affiliation(s)
- Ayelen Moreno-Irusta
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Esteban M Dominguez
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Khursheed Iqbal
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Xiaoyu Zhang
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Ning Wang
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Michael J Soares
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Obstetrics and Gynecology, University of Kansas Medical Center, Kansas City, Kansas, USA
- Center for Perinatal Research, Children's Mercy Research Institute, Children's Mercy, Kansas City, Missouri, USA
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Moreno-Irusta A, Dominguez EM, Iqbal K, Zhang X, Wang N, Soares MJ. TAF7L REGULATES EARLY STAGES OF MALE GERM CELL DEVELOPMENT. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.08.561408. [PMID: 37873461 PMCID: PMC10592675 DOI: 10.1101/2023.10.08.561408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Male germ cell development is dependent on the orchestrated regulation of gene networks. TATA-box binding protein associated factors (TAFs) facilitate interactions of TATA-binding protein with the TATA element, which is known to coordinate gene transcription during organogenesis. TAF7 like (Taf7l) is situated on the X chromosome and has been implicated in testis development. We examined the biology of TAF7L in testis development using the rat. Taf7l was prominently expressed in preleptotene to leptotene spermatocytes. To study the impact of TAF7L on the testis we generated a global loss-of-function rat model using CRISPR/Cas9 genome editing. Exon 3 of the Taf7l gene was targeted. A founder was generated possessing a 110 bp deletion within the Taf7l locus, which resulted in a frameshift and the premature appearance of a stop codon. The mutation was effectively transmitted through the germline. Deficits in TAF7L did not adversely affect pregnancy or postnatal survival. However, the Taf7l disruption resulted in male infertility due to compromised testis development and failed sperm production. Mutant germ cells suffer meiotic arrest at the zygotene stage, with defects in sex body formation and meiotic sex chromosome inactivation. This testis phenotype was more pronounced than previously described for the subfertile Taf7l null mouse. We conclude that TAF7L is essential for male germ cell development in the rat.
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Affiliation(s)
- Ayelen Moreno-Irusta
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, KS
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS
| | - Esteban M. Dominguez
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, KS
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS
| | - Khursheed Iqbal
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, KS
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS
| | - Xiaoyu Zhang
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, KS
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS
| | - Ning Wang
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, KS
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS
| | - Michael J. Soares
- Institute for Reproductive and Developmental Sciences, University of Kansas Medical Center, Kansas City, KS
- Department of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS
- Department of Obstetrics and Gynecology, University of Kansas Medical Center, Kansas City, KS
- Center for Perinatal Research, Children’s Mercy Research Institute, Children’s Mercy, Kansas City, MO
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Ambulkar PS, Waghmare JE, Verma Shivkumar P, Chaudhari AR, Gangane NM, Narang P, Pal AK. The association of testis-specific hTAF7L gene variants with idiopathic azoospermic and severe oligozoospermic male infertility. Andrologia 2022; 54:e14581. [PMID: 36068176 DOI: 10.1111/and.14581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 05/27/2022] [Accepted: 08/25/2022] [Indexed: 12/01/2022] Open
Abstract
Spermatogenesis is regulated by complex tissue specific gene expression in the testis to achieve normal male fertility. X-chromosome specific TATA binding protein (TBP)-associated factor 7L (hTAF7L) is one of the transcriptional regulator genes considered essential for spermatogenesis. The aim of this study was to evaluate the role of variants/mutations in the testis-specific hTAF7L gene in non-obstructive azoospermia and severe oligozoospermia male infertility. We studied 156 idiopathic non-obstructive azoospermic, severe oligozoospermic infertile males and 50 fertile proven controls. Infertile males and control subjects were genotyped for variants of the hTAF7L gene using polymerase chain reaction and a direct Sanger sequencing approach. The odds ratio evaluated the association of hTAF7L gene variants with idiopathic male infertility. The variants found in the hTAF7L gene were subjected to an in-silico analysis study. In infertile study subjects, we observed 11 single base pair nucleotide changes at various exons and three frameshift variants at exon 10 in the hTAF7L gene. We also found more than one variant in some non-obstructive azoospermia and severe oligozoospermia infertile males along with control subjects. All these variants changed the amino acid sequences in the hTAF7L gene. However, similar changes were also seen in fertile subjects, and the differences were not statistically significant. In-silico tools also predicted that the variants were likely to be benign. The variants in cDNA of the hTAF7L gene were typical SNPs. It is found that the hTAF7L gene is highly polymorphic and these missense variants are not directly associated with male infertility. However, we feel that more studies are needed to elucidate the role of multiple variants of the hTAF7L gene in the process of normal spermatogenesis.
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Affiliation(s)
- Prafulla S Ambulkar
- Centre for Genetics & Genomics, Department of Anatomy, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India
| | - Jwalant E Waghmare
- Centre for Genetics & Genomics, Department of Anatomy, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India
| | - Poonam Verma Shivkumar
- Department of Obstetrics & Gynaecology, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India
| | - Ajay R Chaudhari
- Department of Physiology, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India
| | - Nitin M Gangane
- Centre for Genetics & Genomics, Department of Anatomy, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India.,Department of Pathology, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India
| | - Pratibha Narang
- Centre for Genetics & Genomics, Department of Anatomy, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India.,Department of Microbiology, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India
| | - Asoke K Pal
- Centre for Genetics & Genomics, Department of Anatomy, Mahatma Gandhi Institute of Medical Sciences, Wardha, Maharashtra, India
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