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https://www.readbyqxmd.com/read/29127874/generation-of-induced-pluripotent-stem-cells-from-a-patient-with-parkinson-s-disease-carrying-lrrk2-p-i2012t-mutation
#1
Chin-Hsien Lin, Yu-Che Cheng, Han-I Lin, Ming-Ching Ho, Yu-Hung Hsu, Cheng-Hao Wen, Hui-Wen Ko, Huai-En Lu, Ching-Ying Huang, Patrick C H Hsieh
Parkinson's disease (PD) is a progressive neurodegenerative disorder caused by interactions between genetic and environmental factors. Leucine rich repeat kinase (LRRK2) is the most prevalent mutation in autosomal-dominant inheritance of PD. Here, we generated induced pluripotent stem cells (iPSCs) from the peripheral blood mononuclear cells of a female patient with p.I2012T mutation in LRRK2 gene by using the Sendai-virus delivery system. The resulting iPSCs had a normal karyotype. The iPSCs also showed pluripotency confirmed by immunofluorescent staining and differentiated into the 3 germ layers in vivo...
October 31, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/29126291/the-dynamic-development-of-germ-cells-during-chicken-embryogenesis
#2
Seo Yeong Yang, Hong Jo Lee, Hyung Chul Lee, Young Sun Hwang, Young Hyun Park, Tamao Ono, Jae Yong Han
Appropriate regulation of cell proliferation during embryogenesis is crucial for the maintenance of germness. An in-depth understanding of germ cell developmental processes may yield valuable information on germ cell biology and applied sciences. However, direct evidences about germ cell proliferation and cell cycling during avian embryonic development has not been well-studied. Thus, we explored chicken germ cell dynamics during embryonic development via flow cytometry employing a germ cell-specific anti-cVASA antibody (the chicken VASA homolog is termed CVH) and propidium iodide staining...
November 4, 2017: Poultry Science
https://www.readbyqxmd.com/read/29110621/functional-germ-cells-from-non-testicular-adult-stem-cells-a-dream-or-reality
#3
Mohammad Ghasemzadeh-Hasankolaei, Mohammadreza Baghaban Eslaminejad, Maryam Ghasemzadeh-Hasankolaei
BACKGROUND: Some research studies provided evidence for the differentiation capacity of adult stem cells (ASCs) into germ cells (GCs). Since the generation of GCs from stem cells (SCs) has been proposed as a potential way for treatment of infertility, many research groups, have begun their creative studies on generation of new GCs both in vitro and in vivo, and utilized different ASC types such as bone marrow mesenchymal stem cells (BM-MSCs), skin stem cells, pancreatic stem cells, and adipose tissue MSCs...
November 6, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29063123/cadherin-22-participates-in-the-self-renewal-of-mouse-female-germ-line-stem-cells-via-interaction-with-jak2-and-%C3%AE-catenin
#4
Xiaoyu Zhang, Yang Yang, Qin Xia, Hongfei Song, Rui Wei, Jingjing Wang, Kang Zou
The self-renewal capacity of the stem cell pool determines tissue function and health. Cadherin-22 (Cdh22), a member of the cadherin superfamily, has two splicing patterns in rats, and the short type that lacks a catenin binding domain is closely related to spermatogonial stem cell self-renewal. Previously, we reported that CDH22 was highly expressed in mouse ovary germ cells, especially in female germ line stem cells (FGSCs). However, its underlying function in FGSCs is still not clear. Here, we found that Cdh22 encodes only one type of protein product in mice and demonstrated that CDH22 was required for FGSC self-renewal...
October 24, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29055226/generation-of-an-induced-pluripotent-stem-cell-line-ibms-ipsc-014-05-from-a-female-autosomal-dominant-polycystic-kidney-disease-patient-carrying-a-common-mutation-of-r803x-in-pkd2
#5
Ming-Ching Ho, Ching-Ying Huang, Jia-Jung Lee, Shih-Han Hsu, Yu-Che Cheng, Yu-Hung Hsu, Daw-Yang Hwang, Huai-En Lu, Hung-Chun Chen, Patrick C H Hsieh
Autosomal dominant polycystic kidney disease (ADPKD) is one of the most commonly inherited forms of polycystic kidney disease, and is characterized by the growth of numerous cysts in both kidneys. Here we generated an induced pluripotent stem cell (iPSC) line from the peripheral blood mononuclear cells (PBMCs) of a 63-year-old female ADPKD patient carrying an R803X mutation in the PKD2 gene using the Sendai-virus delivery system. Downstream characterization of these iPSCs showed that they possessed normal karyotyping, were free of genomic integration, retained the disease-causing PKD2 mutation, expressed pluripotency markers and could differentiate into three germ layers...
October 10, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/29034892/generation-of-a-human-induced-pluripotent-stem-cell-line-from-a-65-year-old-healthy-female-donor-with-chinese-han-genetic-background
#6
Ying Wang, Jing Zhang, Yue Zhang, Danyi Huang, Jian Zhao, Gang Li, Ying Lei
Peripheral blood mononuclear cells (PBMC) were collected from a 65-year old healthy woman with Chinese Han genetic background. The PBMCs were reprogrammed with the human OKSM transcription factors using the non-integrating episomal vector system. The transgene-free iPSC showed pluripotency verified by immunocytochemistry for pluripotency markers and differentiated spontaneously toward the 3 germ layers in vitro. Furthermore, the iPSC line showed normal karyotype. The iPSC line can be used as control in disease mechanism studies...
October 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28956719/arsenic-trioxide-exposure-impairs-testicular-morphology-in-adult-male-mice-and-consequent-fetus-viability
#7
Raquel Frenedoso da Silva, Cibele Dos Santos Borges, Celina de Almeida Lamas, Valéria Helena Alves Cagnon, Wilma de Grava Kempinas
The acute promyelocytic leukemia (APL) is a rare disease, affecting 0.1/100,000 individuals globally. Despite significant advances in APL therapy, some patients still experience relapsed disease. Currently, arsenic trioxide (As2O3) was found to be effective in relapsed APL treatment and considered as standard treatment for these cases. However, it has been shown that exposure to As2O3 may exert adverse effects on the male reproductive system since this substance might also induce apoptosis of other important cell types including stem cells...
2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28950090/spermatogenesis
#8
Hitoshi Nishimura, Steven W L'Hernault
Most organisms consist of two cell lineages - somatic cells and germ cells. The former are required for the current generation, and the latter create offspring. Male and female germ cells are usually produced during spermatogenesis and oogenesis, which take place in the testis and the ovary, respectively. Spermatogenesis involves the differentiation of spermatogonial stem cells into spermatocytes via mitotic cell division and the production of haploid spermatids from the tetraploid primary spermatocytes via meiotic cell division...
September 25, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28928204/bone-morphogenetic-protein-and-retinoic-acid-synergistically-specify-female-germ-cell-fate-in-mice
#9
Hidetaka Miyauchi, Hiroshi Ohta, So Nagaoka, Fumio Nakaki, Kotaro Sasaki, Katsuhiko Hayashi, Yukihiro Yabuta, Tomonori Nakamura, Takuya Yamamoto, Mitinori Saitou
The mechanism for sex determination in mammalian germ cells remains unclear. Here, we reconstitute the female sex determination in mouse germ cells in vitro under a defined condition without the use of gonadal somatic cells. We show that retinoic acid (RA) and its key effector, STRA8, are not sufficient to induce the female germ-cell fate. In contrast, bone morphogenetic protein (BMP) and RA synergistically induce primordial germ cells (PGCs)/PGC-like cells (PGCLCs) derived from embryonic stem cells (ESCs) into fetal primary oocytes...
November 2, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28925368/a-marfan-syndrome-human-induced-pluripotent-stem-cell-line-with-a-heterozygous-fbn1-c-4082g-a-mutation-ismmsi002-b-for-disease-modeling
#10
Sandra Klein, Jill L Dvornik, Akshitha R Yarrabothula, Christoph Schaniel
Fibroblasts of a 28-year-old female with Marfan syndrome (MFS) due to a heterozygous FBN1 c.4082G>A mutation were reprogrammed using the Sendai virus delivery method. The established human induced pluripotent stem cell (hiPSC) line named ISMMSi002-B expresses pluripotency markers, has a normal karyotype, carries the specific FBN1 mutation and is able to differentiate into three germ layers in vitro. ISMMSi002-B has utility in studying MFS pathogenesis, including skeletal abnormalities, cardiomyopathy, and vascular smooth muscle cell dysfunction associated with aortic aneurysm...
August 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28912601/phf7-a-novel-male-gene-influences-female-fecundity-and-population-growth-in-nilaparvata-lugens-st%C3%A3-l-hemiptera-delphacidae
#11
Lin-Quan Ge, Ting Xia, Bo Huang, Hao-Tian Gu, Qi-Sheng Song, Guo-Qing Yang, Fang Liu, Jin-Cai Wu
PHF7 exhibits male-specific expression in early germ cells, germline stem cells and spermatogonia in insects, and its expression promotes spermatogenesis in germ cells when they are present in a male soma. However, the influence of male-specific PHF7 on female reproductive biology via mating remains unclear. Thus, we investigated the potential impacts of male PHF7, existed in seminal fluid of Nilaparvata lugens (NlPHF7), on fecundity and population growth via mating. Our results revealed that suppressing male NlPHF7 expression by RNAi led to decreases in body weight, soluble accessory gland protein content, arginine content, and reproductive organ development in males, resulting in significant reduction of oviposition periods and fecundity in females, and significant decrease in body weight, fat body and ovarian protein content, yeast-like symbionts abundance, ovarian development and vitellogenin gene expression in their female mating partners...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28883837/role-of-the-hedgehog-signaling-pathway-in-regulating-the-behavior-of-germline-stem-cells
#12
REVIEW
Shiqin Li, Meng Wang, Yanghui Chen, Wei Wang, Junying Wu, Chengpeng Yu, Yuehui Zheng, Zezheng Pan
Germline stem cells (GSCs) are adult stem cells that are responsible for the production of gametes and include spermatogonial stem cells (SSCs) and ovarian germline stem cells (OGSCs). GSCs are located in a specialized microenvironment in the gonads called the niche. Many recent studies have demonstrated that multiple signals in the niche jointly regulate the proliferation and differentiation of GSCs, which is of significance for reproductive function. Previous studies have demonstrated that the hedgehog (Hh) signaling pathway participates in the proliferation and differentiation of various stem cells, including GSCs in Drosophila and male mammals...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28853925/sex-determination-in-the-mammalian-germline
#13
Cassy Spiller, Peter Koopman, Josephine Bowles
Sexual reproduction crucially depends on the production of sperm in males and oocytes in females. Both types of gamete arise from the same precursor, the germ cells. We review the events that characterize the development of germ cells during fetal life as they commit to, and prepare for, oogenesis or spermatogenesis. In females, fetal germ cells enter meiosis, whereas in males they delay meiosis and instead lose pluripotency, activate an irreversible program of prospermatogonial differentiation, and temporarily cease dividing...
August 30, 2017: Annual Review of Genetics
https://www.readbyqxmd.com/read/28844904/germ-cell-cysts-and-simultaneous-sperm-and-oocyte-production-in-a-hermaphroditic-nematode
#14
COMPARATIVE STUDY
Caitlin M McCaig, Xiaoxue Lin, Maureen Farrell, Kathryn Rehain-Bell, Diane C Shakes
Studies of gamete development in the self-fertile hermaphrodites of Caenorhabditis elegans have significantly contributed to our understanding of fundamental developmental mechanisms. However, evolutionary transitions from outcrossing males and females to self-fertile hermaphrodites have convergently evolved within multiple nematode sub-lineages, and whether the C. elegans pattern of self-fertile hermaphroditism and gamete development is representative remains largely unexplored. Here we describe a pattern of sperm production in the trioecious (male/female/hermaphrodite) nematode Rhabditis sp...
October 15, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28841213/complete-in-vitro-oogenesis-retrospects-and-prospects
#15
REVIEW
Jun-Jie Wang, Wei Ge, Jing-Cai Liu, Francesca Gioia Klinger, Paul W Dyce, Massimo De Felici, Wei Shen
Precise control of mammalian oogenesis has been a traditional focus of reproductive and developmental biology research. Recently, new reports have introduced the possibility of obtaining functional gametes derived in vitro from stem cells. The potential to produce functional gametes from stem cells has exciting applications for regenerative medicine though still remains challenging. In mammalian females ovulation and fertilization is a privilege reserved for a small number of oocytes. In reality the vast majority of oocytes formed from primordial germ cells (PGCs) will undergo apoptosis, or other forms of cell death...
November 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28840245/centromere-dynamics-in-male-and-female-germ-cells
#16
Elaine M Dunleavy, Caitríona M Collins
In sexually reproducing organisms the germ line is the cellular lineage that gives rise to gametes. All germ cells originate from germline stem cells that divide asymmetrically to generate gonial pre-cursors, which are amplified in number by mitotic divisions, undergo meiosis and eventually differentiate into mature gametes (haploid eggs and sperm). Information transmitted with gametes is inherited by offspring, and potentially by subsequent generations, instructing in organismal development and beyond. Meiosis comprises one round of DNA replication, followed by two rounds of chromosome segregation; homologous chromosomes segregate in the first division (meiosis I) and sister chromatids segregate in the second division (meiosis II)...
2017: Progress in Molecular and Subcellular Biology
https://www.readbyqxmd.com/read/28809393/ythdc2-is-an-n-6-methyladenosine-binding-protein-that-regulates-mammalian-spermatogenesis
#17
Phillip J Hsu, Yunfei Zhu, Honghui Ma, Yueshuai Guo, Xiaodan Shi, Yuanyuan Liu, Meijie Qi, Zhike Lu, Hailing Shi, Jianying Wang, Yiwei Cheng, Guanzheng Luo, Qing Dai, Mingxi Liu, Xuejiang Guo, Jiahao Sha, Bin Shen, Chuan He
N(6)-methyladenosine (m(6)A) is the most common internal modification in eukaryotic mRNA. It is dynamically installed and removed, and acts as a new layer of mRNA metabolism, regulating biological processes including stem cell pluripotency, cell differentiation, and energy homeostasis. m(6)A is recognized by selective binding proteins; YTHDF1 and YTHDF3 work in concert to affect the translation of m(6)A-containing mRNAs, YTHDF2 expedites mRNA decay, and YTHDC1 affects the nuclear processing of its targets. The biological function of YTHDC2, the final member of the YTH protein family, remains unknown...
September 2017: Cell Research
https://www.readbyqxmd.com/read/28691729/in-vitro-differentiation-of-primordial-germ-cells-and-oocyte-like-cells-from-stem-cells
#18
REVIEW
José J N Costa, Glaucinete B Souza, Maria A A Soares, Regislane P Ribeiro, Robert van den Hurk, José R V Silva
Infertility is the result of failure due to an organic disorder of the reproductive organs, especially their gametes. Recently, much progress has been made on generating germ cells, including oocytes, from various types of stem cells. This review focuses on advances in female germ cell differentiation from different kinds of stem cells, with emphasis on embryonic stem cells, adult stem cells, and induced pluripotent stem cells. The advantages and disadvantages of the derivation of female germ cells from several types of stem cells are also highlighted, as well as the ability of stem cells to generate mature and functional female gametes...
July 10, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28691222/the-morphology-of-the-male-reproductive-system-spermatogenesis-and-the-spermatozoon-of-daphnia-magna-crustacea-branchiopoda
#19
Maggie Wuerz, Erwin Huebner, Judith Huebner
This study analyses the histological and cellular morphology of the testis and sperm development in the male Daphnia magna Straus 1820. Due to the rarity of males and predominately parthenogenetic lifecycle of Daphnia, there has been limited detailed information on males in contrast to the well-studied female. Using light and electron microscopy approaches, we describe the morphology of the testis during the progression from an immature to mature testis. The testis has an encasing muscular mesh sheath outside the basal lamina, beneath which is a thin somatic epithelial cell layer...
July 10, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28669362/putative-germline-and-pluripotent-stem-cells-in-adult-mouse-ovary-and-their-in-vitro-differentiation-potential-into-oocyte-like-and-somatic-cells
#20
Yashar Esmaeilian, Arzu Atalay, Esra Erdemli
According to classical knowledge of reproductive biology, in the ovary of female mammals there is a limited number of oocytes and there is no possibility of renewal if the oocytes are lost due to disease or injury. However, in recent years, the results of some studies on renewal and formation of oocytes and follicles in the adult mammalian ovary have led to the questioning of this opinion. The aim of our study is to demonstrate the presence of putative germline and pluripotent stem cells in the adult mouse ovary and their differentiation potential into germ and somatic cells...
June 2017: Zygote: the Biology of Gametes and Early Embryos
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