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De Clercq E, Starke G, Rost M. "Waking up" the sleeping metaphor of normality in connection to intersex or DSD: a scoping review of medical literature. HISTORY AND PHILOSOPHY OF THE LIFE SCIENCES 2022; 44:50. [PMID: 36282442 PMCID: PMC9596528 DOI: 10.1007/s40656-022-00533-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 08/31/2022] [Indexed: 06/16/2023]
Abstract
The aim of the study is to encourage a critical debate on the use of normality in the medical literature on DSD or intersex. For this purpose, a scoping review was conducted to identify and map the various ways in which "normal" is used in the medical literature on DSD between 2016 and 2020. We identified 75 studies, many of which were case studies highlighting rare cases of DSD, others, mainly retrospective observational studies, focused on improving diagnosis or treatment. The most common use of the adjective normal was in association with phenotypic sex. Overall, appearance was the most commonly cited criteria to evaluate the normality of sex organs. More than 1/3 of the studies included also medical photographs of sex organs. This persistent use of normality in reference to phenotypic sex is worrisome given the long-term medicalization of intersex bodies in the name of a "normal" appearance or leading a "normal" life. Healthcare professionals should be more careful about the ethical implications of using photographs in publications given that many intersex persons describe their experience with medical photography as dehumanizing.
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Affiliation(s)
- Eva De Clercq
- Institute for Biomedical Ethics, University of Basel, Bernoullistrasse 28, 4056 Basel, Switzerland
- Institute of Biomedical Ethics and History of Medicine, University of Zürich, Winterthurerstrasse 30, 8006 Zurich, Switzerland
| | - Georg Starke
- Institute for Biomedical Ethics, University of Basel, Bernoullistrasse 28, 4056 Basel, Switzerland
- College of Humanities, École Polytechnique Fédérale de Lausanne, Rte Cantonale, 1015 Lausanne, Switzerland
| | - Michael Rost
- Institute for Biomedical Ethics, University of Basel, Bernoullistrasse 28, 4056 Basel, Switzerland
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Disorder of Sex Development Due to 17-Beta-Hydroxysteroid Dehydrogenase Type 3 Deficiency: A Case Report and Review of 70 Different HSD17B3 Mutations Reported in 239 Patients. Int J Mol Sci 2022; 23:ijms231710026. [PMID: 36077423 PMCID: PMC9456484 DOI: 10.3390/ijms231710026] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/09/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
The 17-beta-hydroxysteroid dehydrogenase type 3 (17-β-HSD3) enzyme converts androstenedione to testosterone and is encoded by the HSD17B3 gene. Homozygous or compound heterozygous HSD17B3 mutations block the synthesis of testosterone in the fetal testis, resulting in a Disorder of Sex Development (DSD). We describe a child raised as a female in whom the discovery of testes in the inguinal canals led to a genetic study by whole exome sequencing (WES) and to the identification of a compound heterozygous mutation of the HSD17B3 gene (c.608C>T, p.Ala203Val, and c.645A>T, p.Glu215Asp). Furthermore, we review all HSD17B3 mutations published so far in cases of 17-β-HSD3 deficiency. A total of 70 different HSD17B3 mutations have so far been reported in 239 patients from 187 families. A total of 118 families had homozygous mutations, 63 had compound heterozygous mutations and six had undetermined genotypes. Mutations occurred in all 11 exons and were missense (55%), splice-site (29%), small deletions and insertions (7%), nonsense (5%), and multiple exon deletions and duplications (2%). Several mutations were recurrent and missense mutations at codon 80 and the splice-site mutation c.277+4A>T each represented 17% of all mutated alleles. These findings may be useful to those involved in the clinical management and genetic diagnosis of this disorder.
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Krishnappa B, Arya S, Lila AR, Sarathi V, Memon SS, Barnabas R, Kumbhar BV, Bhandare VV, Patil V, Shah NS, Kunwar A, Bandgar T. 17β hydroxysteroid dehydrogenase 3 deficiency in 46,XY disorders of sex development: Our experience and a gender role-focused systematic review. Clin Endocrinol (Oxf) 2022; 97:43-51. [PMID: 35170787 DOI: 10.1111/cen.14694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/03/2022] [Accepted: 01/10/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To describe Asian Indian patients with 17β hydroxysteroid dehydrogenase 3 (17βHSD3) deficiency and to perform a systematic review to determine the factors influencing gender role in 46,XY disorder of sex development (DSD) due to 17βHSD3 deficiency. PATIENTS AND DESIGN We present the phenotypic and genotypic data of 10 patients (9 probands and 1 affected family member) with 17βHSD3 deficiency from our 46,XY DSD cohort (N = 150; Western India) and a systematic review of 152 probands with genetically proven, index 17βHSD3 deficiency patients from the world literature to identify the determinants of gender role. RESULTS 17βHSD3 deficiency was the third most common (6%) cause of non-dysgenetic 46,XY DSD in our cohort. Five patients each had prepubertal (atypical genitalia) and pubertal (primary amenorrhoea) presentations. Six patients were initially reared as female of whom two (one each in prepubertal and pubertal age) changed their gender role. Ten pathogenic molecular variants (six novel) were observed. In the systematic review, initial male sex of rearing was uncommon (10.5%) and was associated with atypical genitalia, higher testosterone/androstenedione (T/A) ratio and Asian origin. Gender role change to male was seen in 10.3% of patients with initial female sex of rearing and was associated with Asian origin but unrelated to pubertal androgens or molecular variant severity. It has not been reported in patients of European origin. CONCLUSIONS We report the first Indian case series of 17βHSD3 deficiency, the third most common cause of 46,XY DSD, with six novel molecular variants. Distinct geographical differences in the frequency of initial male sex of rearing and gender role change to male in those initially reared as females in 17βHSD3 deficiency were noted which needs further evaluation for the underlying molecular mechanisms.
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Affiliation(s)
- Brijesh Krishnappa
- Department of Endocrinology, Seth G S Medical College & KEM Hospital, Mumbai, Maharashtra, India
| | - Sneha Arya
- Department of Endocrinology, Seth G S Medical College & KEM Hospital, Mumbai, Maharashtra, India
| | - Anurag R Lila
- Department of Endocrinology, Seth G S Medical College & KEM Hospital, Mumbai, Maharashtra, India
| | - Vijaya Sarathi
- Department of Endocrinology, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, Karnataka, India
| | - Saba S Memon
- Department of Endocrinology, Seth G S Medical College & KEM Hospital, Mumbai, Maharashtra, India
| | - Rohit Barnabas
- Department of Endocrinology, Seth G S Medical College & KEM Hospital, Mumbai, Maharashtra, India
| | - Bajarang V Kumbhar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, India
| | - Vishwambhar V Bhandare
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, India
| | - Virendra Patil
- Department of Endocrinology, Seth G S Medical College & KEM Hospital, Mumbai, Maharashtra, India
| | - Nalini S Shah
- Department of Endocrinology, Seth G S Medical College & KEM Hospital, Mumbai, Maharashtra, India
| | - Ambarish Kunwar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, India
| | - Tushar Bandgar
- Department of Endocrinology, Seth G S Medical College & KEM Hospital, Mumbai, Maharashtra, India
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Analyses of Molecular Characteristics and Enzymatic Activities of Ovine HSD17B3. Animals (Basel) 2021; 11:ani11102876. [PMID: 34679897 PMCID: PMC8532638 DOI: 10.3390/ani11102876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 11/16/2022] Open
Abstract
17β-hydroxysteroid dehydrogenase type 3 (HSD17B3) converts androstenedione (A4) into testosterone (T), which regulates sex steroid production. Because various mutations of the HSD17B3 gene cause disorder of sex differentiation (DSD) in multiple mammalian species, it is very important to reveal the molecular characteristics of this gene in various species. Here, we revealed the open reading frame of the ovine HSD17B3 gene. Enzymatic activities of ovine HSD17B3 and HSD17B1 for converting A4 to T were detected using ovine androgen receptor-mediated transactivation in reporter assays. Although HSD17B3 also converted estrone to estradiol, this activity was much weaker than those of HSD17B1. Although ovine HSD17B3 has an amino acid sequence that is conserved compared with other mammalian species, it possesses two amino acid substitutions that are consistent with the reported variants of human HSD17B3. Substitutions of these amino acids in ovine HSD17B3 for those in human did not affect the enzymatic activities. However, enzymatic activities declined upon missense mutations of the HSD17B3 gene associated with 46,XY DSD, affecting amino acids that are conserved between these two species. The present study provides basic information and tools to investigate the molecular mechanisms behind DSD not only in ovine, but also in various mammalian species.
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Sager CP, Weber S, Negri M, Banachowicz P, Möller G, Adamski J, Hartmann RW, Marchais-Oberwinkler S. Homology modeling meets site-directed mutagenesis: An ideal combination to elucidate the topology of 17β-HSD2. J Steroid Biochem Mol Biol 2021; 206:105790. [PMID: 33246154 DOI: 10.1016/j.jsbmb.2020.105790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 11/03/2020] [Accepted: 11/18/2020] [Indexed: 11/17/2022]
Abstract
17β-Hydroxysteroid dehydrogenase type 2 (17β-HSD2) catalyzes the conversion of highly active estrogens and androgens into their less active forms using NAD+ as cofactor. Substrate and cofactor specificities of 17β-HSD2 have been reported and potent 17β-HSD2 inhibitors have been discovered in a ligand-based approach. However, the molecular basis and the amino acids involved in the enzymatic functionality are poorly understood, as no crystal structure of the membrane-associated 17β-HSD2 exists. The functional properties of only few amino acids are known. The lack of topological information impedes structure-based drug design studies and limits the design of biochemical experiments. The aim of this work was the determination of the 17β-HSD2 topology. For this, the first homology model of 17β-HSD2 in complex with NAD+ and 17β-estradiol was built, using a multi-fragment "patchwork" approach. To confirm the quality of the model, fifteen selected amino acids were exchanged one by one using site directed mutagenesis. The mutants' functional behavior demonstrated that the generated model was of very good quality and allowed the identification of several key amino acids involved in either ligand or internal structure stabilization. The final model is an optimal basis for further experiments like, for example, lead optimization.
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Affiliation(s)
- Christoph P Sager
- Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6, 35037 Marburg, Germany
| | - Susanne Weber
- Helmholtz Zentrum München, Research Unit Molecular Endocrinology and Metabolism, 85764 Neuherberg, Germany
| | - Matthias Negri
- Helmholtz Institute for Pharmaceutical Research Saarland, Campus E8.1, 66123 Saarbrücken, Germany
| | - Pauline Banachowicz
- Helmholtz Zentrum München, Research Unit Molecular Endocrinology and Metabolism, 85764 Neuherberg, Germany
| | - Gabriele Möller
- Helmholtz Zentrum München, Research Unit Molecular Endocrinology and Metabolism, 85764 Neuherberg, Germany
| | - Jerzy Adamski
- Helmholtz Zentrum München, Research Unit Molecular Endocrinology and Metabolism, 85764 Neuherberg, Germany; Lehrstuhl für Experimentelle Genetik, Technische Universität München, 85356 Freising-Weihenstephan, Germany; German Center for Diabetes Research, 85764 Neuherberg, Germany
| | - Rolf W Hartmann
- Helmholtz Institute for Pharmaceutical Research Saarland, Campus E8.1, 66123 Saarbrücken, Germany; Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2.3, 66123 Saarbrücken, Germany
| | - Sandrine Marchais-Oberwinkler
- Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6, 35037 Marburg, Germany; Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2.3, 66123 Saarbrücken, Germany.
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Hassan HA, Essawi ML, Mekkawy MK, Mazen I. Novel mutations of the LHCGR gene in two families with 46,XY DSD causing Leydig cell hypoplasia I. Hormones (Athens) 2020; 19:573-579. [PMID: 32666356 DOI: 10.1007/s42000-020-00226-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 06/21/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Leydig cell hypoplasia is a rare autosomal recessive 46,XY disorder of sexual development (DSD). It is caused by homozygous or compound heterozygous inactivating mutations in the human luteinizing hormone/chorionic gonadotropin hormone receptor (LHCGR) gene. In Leydig cell hypoplasia type I, patients are characterized by predominantly female external genitalia, which usually go unrecognized until the age of puberty. METHODS This study reports three patients descending from two unrelated families. We performed clinical, hormonal, histopathological, molecular, and bioinformatics studies for the studied cases. RESULTS All investigations suggested 46,XY DSD and Leydig cell hypoplasia. Molecular analysis showed two novel homozygous inactivating mutations (p.Glu148Ter and p.Leu104Pro) within the extracellular domain of the LHCGR gene. CONCLUSION Although the mutations of the LHCGR gene are distributed heterogeneously, without hotspot or recurrent mutations, about one fifth of the reported mutations worldwide have been detected in Arab patients. This is probably due to the high consanguinity rate in these populations, which increases the percentage of autosomal recessive disorders and the homozygous LHCGR gene mutations.
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Affiliation(s)
- Heba Amin Hassan
- Medical Molecular Genetics Department, Division of Human Genetics and Genome Research, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12311, Egypt.
| | - M L Essawi
- Medical Molecular Genetics Department, Division of Human Genetics and Genome Research, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12311, Egypt
| | - M K Mekkawy
- Human Cytogenetics Department, Division of Human Genetics and Genome Research, National Research Centre, Cairo, Egypt
| | - I Mazen
- Clinical Genetics Department, Division of Human Genetics and Genome Research, National Research Centre, Cairo, Egypt
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Levy-Khademi F, Zeligson S, Lavi E, Klopstock T, Chertin B, Avnon-Ziv C, Abulibdeh A, Renbaum P, Rosen T, Perlberg-Bengio S, Zahdeh F, Behar DM, Levy-Lahad E, Zangen D, Segel R. The novel founder homozygous V225M mutation in the HSD17B3 gene causes aberrant splicing and XY-DSD. Endocrine 2020; 69:650-654. [PMID: 32372306 DOI: 10.1007/s12020-020-02327-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 04/22/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE Mutations in the gene HSD17B3 encoding the 17-beta hydroxysteroid dehydrogenase 3 enzyme cause testosterone insufficiency leading to XY disorders of sex development. In this study the clinical and molecular characteristics of three patients from consanguineous families are elucidated. METHODS We identified three patients from two unrelated families with XY DSD and a novel homozygous HSD17B3:c. 673G>A mutation. The effect of the mutation on splicing was determined in RNA extracted from the testis of one patient. RESULTS Three patients presented at ages 0.1, 8 and 0.7 years with ambiguous genitalia and an XY Karyotype. Endocrine workup showed normal cortisol and mineralocorticoid levels with a low testosterone/androstenedione ratio. Whole-exome sequencing, carried out in the first family, revealed a homozygous novel mutation in the HSD17B3 gene: c. 673G>A, p. V225M. The same mutation was found by Sanger sequencing in the third unrelated patient. Haplotype analysis of a 4 Mb region surrounding the HSD17B3 gene on chromosome 9 revealed that the mutation resides on the same allele in all three patients. The mutation, being the first nucleic acid on exon 10, affects splicing and causes exon 10 skipping in one of our patients' testes. CONCLUSION The novel homozygous c. 673G>A, p. V225M mutation in the 17HSDB3 gene is likely a founder mutation and causes severe XY-DSD. It changes a conserved amino acid residue, and also alters 17HSDB3 gene transcription by causing skipping of exon 10, thereby contributing to an imbalance in the relevant protein isoforms and consequently, significant decreased 17HDSB3 enzymatic activity.
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Affiliation(s)
- Floris Levy-Khademi
- Division of Pediatric Endocrinology, Department of Pediatrics, Shaare Zedek Medical Center, Jerusalem, Israel.
- The Hebrew University School of Medicine, Jerusalem, Israel.
| | - Sharon Zeligson
- The institute of Medical Genetics, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Eran Lavi
- The Hebrew University School of Medicine, Jerusalem, Israel
- Division of Pediatric Endocrinology, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Tehila Klopstock
- The Hebrew University School of Medicine, Jerusalem, Israel
- The institute of Medical Genetics, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Boris Chertin
- The Hebrew University School of Medicine, Jerusalem, Israel
- Department of Pediatric Urology, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Carmit Avnon-Ziv
- Division of Pediatric Endocrinology, Department of Pediatrics, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Abdulsalam Abulibdeh
- The Hebrew University School of Medicine, Jerusalem, Israel
- Division of Pediatric Endocrinology, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Paul Renbaum
- The institute of Medical Genetics, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Tzvia Rosen
- The institute of Medical Genetics, Shaare Zedek Medical Center, Jerusalem, Israel
| | | | - Fouad Zahdeh
- The institute of Medical Genetics, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Doron M Behar
- Gene by Gene, Genomic Research Center, Houston, Texas, USA
| | - Ephrat Levy-Lahad
- The Hebrew University School of Medicine, Jerusalem, Israel
- Division of Pediatric Endocrinology, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - David Zangen
- The Hebrew University School of Medicine, Jerusalem, Israel.
- Division of Pediatric Endocrinology, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
| | - Reeval Segel
- The Hebrew University School of Medicine, Jerusalem, Israel
- The institute of Medical Genetics, Shaare Zedek Medical Center, Jerusalem, Israel
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Yazawa T, Imamichi Y, Uwada J, Sekiguchi T, Mikami D, Kitano T, Ida T, Sato T, Nemoto T, Nagata S, Islam Khan MR, Takahashi S, Ushikubi F, Suzuki N, Umezawa A, Taniguchi T. Evaluation of 17β-hydroxysteroid dehydrogenase activity using androgen receptor-mediated transactivation. J Steroid Biochem Mol Biol 2020; 196:105493. [PMID: 31614207 DOI: 10.1016/j.jsbmb.2019.105493] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/02/2019] [Accepted: 10/07/2019] [Indexed: 12/17/2022]
Abstract
17β-Hydroxysteroid dehydrogenases (17β-HSDs) catalyze the reduction of 17-ketosteroids and the oxidation of 17β-hydroxysteroids to regulate the production of androgens and estrogens. Among them, 17β-HSD type 3 (HSD17B3) is expressed almost exclusively in testicular Leydig cells and contributes to development of male sexual characteristics by converting androstenedione (A4) to testosterone (T). Mutations of HSD17B3 genes cause a 46,XY disorder of sexual development (46,XY DSD) as a result of low T production. Therefore, the evaluation of 17β-HSD3 enzymatic activity is important for understanding and diagnosing this disorder. We adapted a method that easily evaluates enzymatic activity of 17β-HSD3 by quantifying the conversion from A4 to T using androgen receptor (AR)-mediated transactivation. HEK293 cells were transduced to express human HSD17B3, and incubated medium containing A4. Depending on the incubation time with HSD17B3-expressing cells, the culture media progressively increased luciferase activities in CV-1 cells, transfected with the AR expression vector and androgen-responsive reporter. Culture medium from HSD17B1 and HSD17B5-expressing cells also increased the luciferase activities. This system is also applicable to detect the conversion of 11-ketoandrostenedione to 11-ketotestosterone by HSD17B3. Establishment of HEK293 cells expressing various missense mutations in the HSD17B3 gene associated with 46,XY DSD revealed that this system is effective to evaluate the enzymatic activities of mutant proteins.
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Affiliation(s)
- Takashi Yazawa
- Department of Biochemistry, Asahikawa Medical University, Hokkaido 078-8510, Japan.
| | - Yoshitaka Imamichi
- Department of Pharmacology, Asahikawa Medical University, Hokkaido 078-8510, Japan
| | - Junsuke Uwada
- Department of Biochemistry, Asahikawa Medical University, Hokkaido 078-8510, Japan
| | - Toshio Sekiguchi
- Noto Marine Laboratory, Division of Marine Environmental Studies, Institute of Nature and Environmental Technology, Kanazawa University, Ishikawa 927-0553, Japan
| | - Daisuke Mikami
- Department of Nephrology, University of Fukui, Fukui 910-1193, Japan
| | - Takeshi Kitano
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University 860-8555, Japan
| | - Takanori Ida
- Department of Bioactive Peptides, Frontier Science Research Center, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Takahiro Sato
- Divsion of Molecular Genetics, Institute of Life Science, Kurume University, 67 Asahi-machi, Kurume, Fukuoka 830-0011, Japan
| | - Takahiro Nemoto
- Department of Physiology, Nippon Medical School, Tokyo 113-8602, Japan
| | - Sayaka Nagata
- Circulatory and Body Fluid Regulation, Faculty of Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Md Rafiqul Islam Khan
- Department of Biochemistry, Asahikawa Medical University, Hokkaido 078-8510, Japan; Department of Pharmacy, University of Rajshahi, Rajshahi, Bangladesh
| | - Satoru Takahashi
- Department of Pediatrics,Asahikawa Medical University, Hokkaido 078-8510, Japan
| | - Fumitaka Ushikubi
- Department of Pharmacology, Asahikawa Medical University, Hokkaido 078-8510, Japan
| | - Nobuo Suzuki
- Noto Marine Laboratory, Division of Marine Environmental Studies, Institute of Nature and Environmental Technology, Kanazawa University, Ishikawa 927-0553, Japan
| | - Akihiro Umezawa
- Department of Reproductive Biology, Center for Regenerative Medicine, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| | - Takanobu Taniguchi
- Department of Biochemistry, Asahikawa Medical University, Hokkaido 078-8510, Japan
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Chen M, Yang W, Liu N, Zhang X, Dong W, Lan X, Pan C. Pig Hsd17b3: Alternative splice variants expression, insertion/deletion (indel) in promoter region and their associations with male reproductive traits. J Steroid Biochem Mol Biol 2019; 195:105483. [PMID: 31550505 DOI: 10.1016/j.jsbmb.2019.105483] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 02/05/2023]
Abstract
Hydroxysteroid 17-Beta Dehydrogenase 3 (Hsd17b3), primarily expressed in Leydig cells (LCs) of the mammalian testes, is essential for testosterone biosynthesis and male fertility. The aim of our study was to profile the expression, splice variants (SV) and novel insertion/deletion (indel) of Hsd17b3 in boars. Quantitative analysis showed that the expression level of Hsd17b3 in the testis was significantly highest. Among different testicular cell types, the Hsd17b3 mRNA expression level of LCs was significantly higher than that of SSCs (spermatogonial stem cells) and SCs (Sertoli cells). Furthermore, the SV was firstly identified in pigs and it was highly expressed in LCs comparing with SSCs and SCs. In addition, two mutations were identified in pig Hsd17b3 gene promotor and intron, respectively, which were associated with male reproductive traits (P < 0.05). In conclusion, both transcripts of Hsd17b3 gene were highly expressed in pig testes and LCs; the two novel indel variants of Hsd17b3 gene can be used as potential DNA makers for the marker-assisted selection in pigs. All these findings would enrich the study of Hsd17b3 gene in pig genetic breeding.
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Affiliation(s)
- Mingyue Chen
- College of Animal Science and Technology, Northwest A&F University, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, 712100, Shaanxi, China
| | - Wenjing Yang
- College of Animal Science and Technology, Northwest A&F University, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, 712100, Shaanxi, China
| | - Nuan Liu
- College of Animal Science and Technology, Northwest A&F University, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, 712100, Shaanxi, China
| | - Xuelian Zhang
- College of Animal Science and Technology, Northwest A&F University, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, 712100, Shaanxi, China
| | - Wuzi Dong
- College of Animal Science and Technology, Northwest A&F University, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, 712100, Shaanxi, China
| | - Xianyong Lan
- College of Animal Science and Technology, Northwest A&F University, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, 712100, Shaanxi, China
| | - Chuanying Pan
- College of Animal Science and Technology, Northwest A&F University, Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, 712100, Shaanxi, China.
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