Molecular Reproduction and Development最新文献

{"title":"Histochemical and immunohistochemical analysis of testicular morphology and spermatogenesis in Gymnotus carapo (Teleostei: Gymnotidae)","authors":"Méndez Galarza Sabrina,&nbsp;Olea Gabriela,&nbsp;Blanco Cohene Tania,&nbsp;Perez Dante,&nbsp;Flores Quintana Carolina","doi":"10.1002/mrd.23687","DOIUrl":"10.1002/mrd.23687","url":null,"abstract":"<p>This work aims to study the testicular morphology and spermatogenesis of <i>Gymnotus carapo</i> to provide information on their reproductive biology which is useful in managing this species as a fishing resource. The testicles were isolated and fixed in 10% formalin; subsequently, they were processed for scanning electron microscopy with conventional histological technique. To analyze the cell proliferation of germline cells and Sertoli cells, immunodetection of the proliferating cell nuclear antigen (PCNA) protein was performed. In <i>G. carapo</i> spermatogenesis, the spermatogenic line is organized into cysts. Spermatogonia A is characterized by more bigger and solitary cells. Spermatogonia B are smaller cells; their nucleus has a larger area concerning the cytoplasm and is grouped in tubules. Spermatocytes (I–II) are smaller than spermatogonia in the prophase of meiotic division. Spermatids are cells with dense, rounded nucleus. The sperm were found in the lumen of the tubule. By immunostaining PCNA, it was possible to observe the proliferative activity of germ line cells and Sertoli cells during the cyst reorganization phase. These results are the basis for future studies focusing on the analysis compared to females of the reproductive cycle of <i>G. carapo</i>.</p>","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 5","pages":"287-294"},"PeriodicalIF":2.5,"publicationDate":"2023-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9890625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RNA sequencing and expression analysis reveal a role for Lhx9 in the haploinsufficient adult mouse ovary","authors":"Stephanie Workman,&nbsp;Megan J. Wilson","doi":"10.1002/mrd.23686","DOIUrl":"10.1002/mrd.23686","url":null,"abstract":"<p>Understanding the molecular pathways that underpin ovarian development and function is vital for improving the research approaches to investigating fertility. Despite a significant improvement in our knowledge of molecular activity in the ovary, many questions remain unanswered in the quest to understand factors influencing fertility and ovarian pathologies such as cancer. Here, we present an investigation into the expression and function of the developmental transcription factor LIM Homeobox 9 (LHX9) in the adult mouse ovary. We have characterized <i>Lhx9</i> expression in several cell types of the mature ovary across follicle stages. To evaluate possible LHX9 function in the adult ovary, we investigated ovarian anatomy and transcription in an <i>Lhx9</i>^<i>+/−</i> knockout mouse model displaying subfertility. Despite a lack of gross anatomical differences between genotypes, RNA-sequencing found that 90 differentially expressed genes between <i>Lhx9</i>^<i>+/</i>⁻ and <i>Lhx9</i>^<i>+/+</i> mice. Gene ontology analyses revealed a reduced expression of genes with major roles in ovarian steroidogenesis and an increased expression of genes associated with ovarian cancer. Analysis of the ovarian epithelium revealed <i>Lhx9</i>^<i>+/</i>⁻ mice have a disorganized epithelial phenotype, corresponding to a significant increase in epithelial marker gene expression. These results provide an analysis of <i>Lhx9</i> in the adult mouse ovary, suggesting a role in fertility and ovarian epithelial cancer.</p>","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 5","pages":"295-309"},"PeriodicalIF":2.5,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mrd.23686","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9536639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Table of Contents, Volume 90, Issue 4, April 2023","authors":"","doi":"10.1002/mrd.23589","DOIUrl":"10.1002/mrd.23589","url":null,"abstract":"","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 4","pages":"167"},"PeriodicalIF":2.5,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mrd.23589","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46116796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional annotation of a hugely expanded nanos repertoire in Lytechinus variegatus, the green sea urchin","authors":"Cosmo Pieplow,&nbsp;Gary Wessel","doi":"10.1002/mrd.23684","DOIUrl":"10.1002/mrd.23684","url":null,"abstract":"<p>Nanos genes encode essential RNA-binding proteins involved in germline determination and germline stem cell maintenance. When examining diverse classes of echinoderms, typically three, sometimes four, nanos genes are present. In this analysis, we identify and annotate nine nanos orthologs in the green sea urchin, <i>Lytechinus variegatus</i> (Lv). All nine genes are transcribed and grouped into three distinct classes. Class one includes the germline Nanos, with one member: Nanos2. Class two includes Nanos3-like genes, with significant sequence similarity to Nanos3 in the purple sea urchin, <i>Strongylocentrotus purpuratus</i> (Sp), but with wildly variable expression patterns. The third class includes several previously undescribed nanos zinc-finger genes that may be the result of duplications of Nanos2. All nine nanos transcripts occupy unique genomic loci and are expressed with unique temporal profiles during development. Importantly, here we describe and characterize the unique genomic location, conservation, and phylogeny of the Lv ortholog of the well-studied Sp Nanos2. However, in addition to the conserved germline functioning Nanos2, the green sea urchin appears to be an outlier in the echinoderm phyla with eight additional nanos genes. We hypothesize that this expansion of nanos gene members may be the result of a previously uncharacterized L1-class transposon encoded on the opposite strand of a nanos2 pseudogene present on chromosome 12 in this species. The expansion of nanos genes described here represents intriguing insights into germline specification and nanos evolution in this species of sea urchin.</p>","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 5","pages":"310-322"},"PeriodicalIF":2.5,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mrd.23684","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9528151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cumulus-oocyte complexes from sows show differences in lipid metabolism compared to cumulus-oocyte complexes from prepubertal gilts during in vitro maturation","authors":"Thainara C. F. Silva,&nbsp;Margot A. N. Dode,&nbsp;Thiago F. Braga,&nbsp;Mariana G. Marques,&nbsp;Luna Nascimento Vargas,&nbsp;Otávio Augusto Costa de Faria,&nbsp;Andressa P. de Souza,&nbsp;Daniela Albring,&nbsp;Alexandre R. Caetano,&nbsp;Maurício M. Franco","doi":"10.1002/mrd.23685","DOIUrl":"10.1002/mrd.23685","url":null,"abstract":"<p>This study aimed to evaluate the effects of donor age on lipid metabolism during in vitro maturation (IVM) of pigs cumulus-oocyte complexes (COCs). We evaluated transcript levels of genes, the percentage of ooplasm occupied by lipid droplets (LD) and evaluated DNA methylation in COCs from sows and prepubertal gilts. Transcript levels of six genes (<i>ACACA, ACSS2, FASN, FABP3, SLC27A4, PLIN2</i>), which were analyzed in cumulus cells (CCs), increased after 44 h of IVM in the sow group. In the gilt group, only <i>FASN</i> expression increased, while <i>NR3C1</i> expression decreased after IVM. The measurement of LD in oocytes showed an accumulation of lipids in sow oocytes during IVM, while gilt oocytes showed a decrease in LD. <i>FABP3</i> and <i>NR3C1</i> methylation patterns exhibited a demethylation pattern in CCs and oocytes from gilts and sows and showed statistical differences between groups. CCs from sows had a better capacity to change transcription levels of the major genes involved in lipid metabolism during IVM than CCs from gilts. This difference may be involved in accumulation of lipids, acquisition of competence, and maturation of enclosed oocytes. Our results contribute to a better understanding of mechanisms involved in lipid metabolism and acquisition of competence in porcine COCs.</p>","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 5","pages":"323-335"},"PeriodicalIF":2.5,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9534840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jun-mediated lncRNA-IMS promotes the meiosis of chicken spermatogonial stem cells via gga-miR-31-5p/stra8","authors":"Yingjie Wang,&nbsp;Lei Zhang,&nbsp;Ruihong Kong,&nbsp;Cai Hu,&nbsp;Zongyi Zhao,&nbsp;Yuhui Wu,&nbsp;Qisheng Zuo,&nbsp;Bichun Li,&nbsp;Ya-ni Zhang","doi":"10.1002/mrd.23682","DOIUrl":"10.1002/mrd.23682","url":null,"abstract":"<p>Meiosis, a key step in spermatogenesis, is affected by many factors. Current studies have shown that long noncoding RNAs (lncRNAs) are potential factors regulating meiosis, and their regulatory mechanisms have received much attention. However, little research has been done on its regulatory mechanism in the spermatogenesis of roosters. Here, we found that lncRNA involved in meiosis and spermatogenesis (lncRNA-IMS) was involved in the regulation of Stra8 by gga-miR-31-5p and hindered the inhibition of Stra8 by gga-miR-31-5p. The acquisition and loss of function experiments demonstrated that lncRNA-IMS was involved in meiosis and spermatogenesis. In addition, we predicted and determined the core promoter region of lncRNA-IMS. Prediction of transcription factors, deletion/overexpression of binding sites, knockdown/overexpression of Jun, and dual-luciferase reporter analysis confirmed that Jun positively activated transcription of lncRNA-IMS. Our findings further enrich the TF-lncRNA-miRNA-mRNA regulatory network during male meiosis and provide new ideas for studying the molecular mechanism of meiosis and spermatogenesis in chicken spermatogonial stem cells.</p>","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 5","pages":"275-286"},"PeriodicalIF":2.5,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9542085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The vascular endothelial growth factor (VEGF) system as a key regulator of ovarian follicle angiogenesis and growth","authors":"Adrian Guzmán,&nbsp;Cyndi G. Hernández-Coronado,&nbsp;Carlos G. Gutiérrez,&nbsp;Ana M. Rosales-Torres","doi":"10.1002/mrd.23683","DOIUrl":"10.1002/mrd.23683","url":null,"abstract":"<p>The vascular endothelial growth factor-A (VEGFA) system is a complex set of proteins, with multiple isoforms and receptors, including both angiogenic (VEGFxxx, VEGFR2) and antiangiogenic members (VEGFxxxb, VEGFR1 and soluble forms of VEGFR). The members of the VEGF system affect the proliferation, survival, and migration of endothelial and nonendothelial cells and are involved in the regulation of follicular angiogenesis and development. The production of VEGF by secondary follicles stimulates preantral follicular development by directly affecting follicular cells and promoting the acquisition of the follicular vasculature and downstream antrum formation. Additionally, the pattern of expression of the components of the VEGF system may provide a proangiogenic milieu capable of triggering angiogenesis and stimulating follicular cells to promote antral follicle growth, whereas, during atresia, this milieu becomes antiangiogenic and blocks follicular development.</p>","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 4","pages":"201-217"},"PeriodicalIF":2.5,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mrd.23683","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9375559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Table of Contents, Volume 90, Issue 3, March 2023","authors":"","doi":"10.1002/mrd.23586","DOIUrl":"10.1002/mrd.23586","url":null,"abstract":"","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 3","pages":"127"},"PeriodicalIF":2.5,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mrd.23586","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48871335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapamycin encourages the maintenance of mitochondrial dynamic balance and mitophagy activity for improving developmental competence of blastocysts in porcine embryos in vitro","authors":"Hyo-Jin Park,&nbsp;Gyeong-Deok Heo,&nbsp;Seul-Gi Yang,&nbsp;Deog-Bon Koo","doi":"10.1002/mrd.23681","DOIUrl":"10.1002/mrd.23681","url":null,"abstract":"<p>Rapamycin induces autophagosome formation and activity during oocyte maturation, improved fertilization ability of matured oocytes, and early embryonic developmental competence. However, potential changes in mitochondrial fission and mitophagy via regulation of autophagy in early porcine embryonic development have not been previously studied. Here, we investigated embryonic developmental ability and quality of porcine embryos 2 days after in vitro fertilization and following treatment with 1 and 10 nM rapamycin. As a results, 1 nM rapamycin exposure significantly improved (<i>p</i> &lt; 0.05) blastocyst developmental competence compared to that in nontreated embryos (nontreated: 26.2 ± 5.7% vs. 1 nM rapamycin: 35.3 ± 5.1%). We observed autophagic (LC3B) and mitochondrial fission protein expression (dynamin-related protein-1 [DRP1] and pDRP1-Ser616) at the cleavage stage of 1 and 10 nM rapamycin-treated porcine embryos, using Western blot and immunofluorescence analyses. Interestingly, 1 nM rapamycin treatment significantly improved autophagy formation, mitochondrial activation, and mitochondrial fission protein levels (<i>p</i> &lt; 0.05; p-DRP1 [Ser616]) at the cleavage stage of porcine embryos. Additionally, mitophagy was significantly increased in blastocysts treated with 1 nM rapamycin. In conclusion, our results suggest that rapamycin promotes blastocyst development ability in porcine embryos through mitochondrial fission, activation, and mitophagy in in vitro culture.</p>","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 4","pages":"236-247"},"PeriodicalIF":2.5,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9381846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High level of thyroid peroxidase antibodies as a detrimental risk of pregnancy outcomes in euthyroid women undergoing ART: A meta-analysis","authors":"Sudan Zhang,&nbsp;Mingdong Yang,&nbsp;Teng Li,&nbsp;Min Yang,&nbsp;Wei Wang,&nbsp;Yunqing Chen,&nbsp;Yu Ding,&nbsp;Jianxin Liu,&nbsp;Xiaohui Xu,&nbsp;Jian Zhang,&nbsp;Zheng Wang,&nbsp;Jiane Liu","doi":"10.1002/mrd.23677","DOIUrl":"10.1002/mrd.23677","url":null,"abstract":"<p>Thyroid autoimmunity (TAI) triggered by genetic and epigenetic variation occurs mostly in women of reproductive age. TAI is described mainly by positivity of anti-thyroid peroxidase antibody (TPO-Ab) and/or thyroglobulin antibody (TG-Ab). TPO-Ab, but not TG-Ab, was suggested to be associated with pregnancy outcome in euthyroid women undergoing assisted reproductive technology (ART), but their results are conflicting. This meta-analysis was performed to decide whether the presence of TPO-Ab—in a concentration dependent manner—correlates with the success of ART. A systematic literature search was performed in the PubMed, Web of Science, and EMBASE databases for relevant articles published from January 1999 to April 2022, and these studies focused on the effect of TAI on pregnancy outcomes of women who underwent in vitro fertilization, intracytoplasmic sperm injection and intrauterine insemination and met the inclusion criteria: (i) the studies were prospective or retrospective study; (ii) all patients undergoing ART were tested for thyroid-related antibodies; (iii) the assessed ART outcomes included miscarriage rate (MR) or delivery rate (DR). The exclusion criteria were: (i) female congenital uterine malformation, chromosomal diseases and other infectious diseases; (ii) overt hypothyroidism or pre-existing thyroid disease; (iii) thrombus tendency. We divided the included patients into three groups according to the TPO-Ab threshold they defined: (i) TPO-Ab (−), threshold &lt;34 IU/mL; (ii) TPO-Ab-34, threshold &gt;34 IU/mL; (iii) TPO-Ab-100, threshold &gt;100 IU/mL. We then extracted necessary relevant data, including MR and DR. Egger's test was used to evaluate the risk of publication bias. This meta-analysis included a total of 7 literatures involving 7466 patients with TAI (−) and 965 patients with TAI (+) and revealed that there was no significant difference between group TPO-Ab-34 and group TPO-Ab (−) in MR [risk ratio (RR): 0.61 (0.35, 1.08), <i>p</i> = 0.09] and DR [RR: 0.97 (0.83, 1.13), <i>p</i> = 0.69]. By contrast, compared to TPO-Ab (−) group, TPO-Ab-100 patients showed markedly higher MR [RR: 2.12 (1.52, 2.96), <i>p</i> = 0.0046], and lower DR [RR: 0.66 (0.49, 0.88), <i>p</i> &lt; 0.0001] with high degree of statistical significance. This meta-analysis suggests that, for euthyroid patients, high level of TPO-Ab (&gt;100 IU/mL) could adversely influence the pregnancy outcome of ART.</p>","PeriodicalId":18856,"journal":{"name":"Molecular Reproduction and Development","volume":"90 4","pages":"218-226"},"PeriodicalIF":2.5,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mrd.23677","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9387271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}