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https://www.readbyqxmd.com/read/29226566/probing-the-importance-of-clonality-single-cell-subcloning-of-clonally-derived-cho-cell-lines-yields-widely-diverse-clones-differing-in-growth-productivity-and-product-quality
#1
Peggy Ko, Shahram Misaghi, Zhilan Hu, Dejin Zhan, Joni Tsukuda, Mandy Yim, Mark Sanford, David Shaw, Masaru Shiratori, Brad Snedecor, Michael Laird, Amy Shen
In the past few decades, a large variety of therapeutic antibodies and proteins have been expressed in Chinese hamster ovary (CHO) cells. This mammalian expression system is robust, scalable, relatively inexpensive, and importantly allows for post-translational modifications that are important for some therapeutic proteins. Historically, CHO cell lines were derived from colonies of cells grown in semi-solid or liquid plates using either serum-containing or serum-free media. Current advancements in cell sorting and imaging technologies have allowed for isolating and imaging single cell progenitors at the seeding step, significantly increasing the probability of isolating clonally-derived cell lines...
December 11, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/29221424/effects-of-dehydroepiandrosterone-supplementation-on-mice-with-diminished-ovarian-reserve
#2
Xiufeng Lin, Jing Du, Yan Du, Riran Wu, Xiaowu Fang, Yuechan Liao, Song Quan
Dehydroepiandrosterone (DHEA) has been used to improve the pregnancy rate in women with diminished ovarian reserve(DOR) during in vitro fertilization. We aimed to validate the effects of DHEA and identify the possible mechanisms. We constructed a mice model with DOR and analyzed the hormone parameters and follicle counts. In vivo experiment, FSH and LH concentrations in the serum were significantly elevated in the DOR group. However, the FSH and LH concentrations were partially reversed in the DOR + DHEA group...
December 8, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29215753/combined-annotation-dependent-depletion-cadd-score-for-brca1-2-variants-in-patients-with-breast-and-or-ovarian-cancer
#3
Hiroshi Nakagomi, Hitoshi Mochizuki, Masayuki Inoue, Yosuke Hirotsu, Kenji Amemiya, Ikuko Sakamoto, Satoko Nakagomi, Takeo Kubota, Masao Omata
The utility of Combined Annotation Dependent Depletion (CADD) Score was recently reported to rank the pathogenicity as C-scores ranging 1 to 99 for both convinced deleterious mutations and missense mutations. Using C-scores for BRCA1/2 variants, we tried to constitute the classification system for Variant of Uncertain Significance (VUS), which had been major problem of genetic testing for Hereditary Breast and/or Ovarian Cancer (HBOC). We analyzed BRCA1/2 genes for 283 patients with breast and/or ovarian cancer...
December 7, 2017: Cancer Science
https://www.readbyqxmd.com/read/29207291/transcriptome-analysis-of-ovine-granulosa-cells-reveals-differences-between-small-antral-follicles-collected-during-the-follicular-and-luteal-phases
#4
Reza Talebi, Ahmad Ahmadi, Fazlollah Afraz, Julien Sarry, Florence Plisson-Petit, Carine Genêt, Stéphane Fabre
Ovarian follicular growth occurs in both the follicular and luteal phases of the estrous cycle but in very different endocrine contexts. In both phases, many small antral follicles with similar morphologic and histologic characteristics are present within the ovaries as a reserve for the terminal folliculogenesis. However, there are several gaps in our molecular knowledge of the gene expression profiles of small antral follicles in the follicular and luteal phases. The aim of the present study was to use RNA sequencing to compare and analyze the global transcriptional profile of ovine granulosa cells collected from small antral follicles (1-3 mm) either during the follicular or the luteal phase of the estrous cycle, with the hypothesis that they should be differential...
November 27, 2017: Theriogenology
https://www.readbyqxmd.com/read/29197096/observations-on-the-origin-of-ovarian-cortical-inclusion-cysts-in-women-undergoing-risk-reducing-salpingo-oophorectomy
#5
Kay J Park, Prusha Patel, Irina Linkov, Anjali Jotwani, Noah Kauff, Malcolm C Pike
AIMS: Evidence suggests that up to 70% of high-grade serous ovarian carcinomas (HGSCs) potentially arise from fallopian tube fimbriae, and that many of the remaining cases arise from within the ovary in cortical inclusion cysts (CICs) with a Müllerian phenotype (Müllerian-CICs). It has been proposed that Müllerian-CICs arise either from metaplasia of mesothelial ovarian surface epithelium (OSE) entrapped within the ovary after ovulation, or from normal tubal cells entrapped post-ovulation...
December 2, 2017: Histopathology
https://www.readbyqxmd.com/read/29193229/identification-of-micrornas-and-genes-associated-with-hyperandrogenism-in-the-follicular-fluid-of-women-with-polycystic-ovary-syndrome
#6
Yunping Xue, Juan Lv, Pengfei Xu, Lin Gu, Jian Cao, Lingling Xu, Kai Xue, Qian Li
BACKGROUND: Polycystic ovary syndrome (PCOS) is a common reproductive endocrine disease, which is characterized by hyperandrogenism (HA), chronic anovulation, polycystic ovaries, insulin resistance and obesity. At present, the mechanism by which PCOS/HA occurs has not been fully elucidated, thus, the mechanisms behind and interventions for HA in PCOS are current hot topics in research. MiRNAs have recently been shown to serve as diagnostic or prognostic biomarkers in patients with cancer...
November 28, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29164777/formulation-and-characterization-of-poly-propylacrylic-acid-poly-lactic-co-glycolic-acid-blend-microparticles-for-ph-dependent-membrane-disruption-and-cytosolic-delivery
#7
Lawrence P Fernando, Jamal S Lewis, Brian C Evans, Craig L Duvall, Benjamin G Keselowsky
Poly(lactic-co-glycolic acid) (PLGA) is widely used as a vehicle for delivery of pharmaceutically relevant payloads. PLGA is readily fabricated as a nano- or microparticle (MP) matrix to load both hydrophobic and hydrophilic small molecular drugs as well as biomacromolecules such as nucleic acids and proteins. However, targeting such payloads to the cell cytosol is often limited by MP entrapment and degradation within acidic endolysosomes. Poly(propylacrylic acid) (PPAA) is a polyelectrolyte polymer with membrane disruptive capability triggered at low pH...
November 22, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29150912/sustaining-an-efficient-and-effective-cho-cell-line-development-platform-by-incorporation-of-24-deep-well-plate-screening-and-multivariate-analysis
#8
Alessandro Mora, Sheng Sam Zhang, Gerald Carson, Bernard Nabiswa, Patrick Hossler, Seongkyu Yoon
Efficient and effective cell line screening is paramount towards a successful biomanufacturing program. Here we describe the implementation of 24-deep well plate screening of CHO lines as part of the cell line development platform at AbbVie. Incorporation of this approach accelerated the identification of the best candidate lines for process development. In an effort to quantify and predict process performance comparability, we compared cell culture performance in 24-deep well plates (24-DWP) and in shake flasks, for a panel of Chinese Hamster Ovary cell lines expressing a monoclonal antibody...
November 18, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/29148539/extrauterine-high-grade-serous-carcinomas-with-bilateral-adnexal-involvement-as-the-only-two-disease-sites-are-clonal-based-on-tp53-sequencing-results-implications-for-biology-classification-and-staging
#9
Naveena Singh, Asma Faruqi, Friedrich Kommoss, W Glenn McCluggage, Giorgia Trevisan, Janine Senz, Amy Lum, C Blake Gilks, Michael Anglesio
A previous multicenter study of 67 cases of Stage I/II tubo-ovarian high-grade serous carcinoma with complete tubal sampling identified 7 cases in which there were only two disease sites, comprising tumor involving opposite adnexa with no extra-adnexal involvement. This study aimed to determine whether such low-stage extrauterine high-grade serous carcinomas with only two sites of involvement, located on opposite adnexa, have identical or different TP53 mutations in order to investigate their clonal relationship...
November 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29144548/anti-m%C3%A3-llerian-hormone-measurement-for-the-diagnosis-of-polycystic-ovary-syndrome
#10
Thozhukat Sathyapalan, Ahmed Al-Qaissi, Eric S Kilpatrick, Soha R Dargham, Stephen L Atkin
OBJECTIVE: Anti-Müllerian hormone (AMH) is derived from the small antral follicles and an elevated level has been suggested to add value to the Rotterdam criteria for the diagnosis of PCOS in cases of diagnostic uncertainty. Therefore, the role of AMH in the classical phenotype of PCOS was defined within a Caucasian population. DESIGN: This was a cross sectional study. PATIENTS: 65 women without PCOS and 110 women with PCOS fulfilling all 3 diagnostic Rotterdam criteria...
November 16, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29138526/stimulation-of-primordial-follicle-assembly-by-estradiol-17%C3%AE-requires-the-action-of-bone-morphogenetic-protein-2-bmp2
#11
Prabuddha Chakraborty, Shyamal K Roy
Primordial follicle (PF) pool determines the availability of follicles for ovulation in all mammals. Premature depletion of the PF reserve leads to subfertility or infertility. Bone morphogenetic protein 2 (BMP2) promotes PF formation by facilitating oocyte and granulosa cell development. Estradiol-17β (E2) upregulates PF formation in developing hamster ovaries. However, if BMP2 mediates E2 effect is not known. We hypothesize that E2 facilitates the effect of BMP2 on somatic to granulosa cell transition. BMP2 and E2 together significantly upregulated the percentage of PFs in hamster fetal ovaries in vitro compared with either of the treatments alone...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29136341/photodynamic-therapy-and-nuclear-imaging-activities-of-zinc-phthalocyanine-integrated-tio2-nanoparticles-in-breast-and-cervical-tumors
#12
Fatma Yurt, Kasim Ocakoglu, Mine Ince, Suleyman Gokhan Colak, Ozge Er, Hale Melis Soylu, Cumhur Gunduz, Cıgır Biray Avci, Cansu Caliskan Kurt
In recent years, phthalocyanines (Pcs) have been widely used as photosensitizer in photodynamic therapy applications. Because of their strong absorptions in the near-infrared region (640-700 nm). The integration of phthalocyanine derivatives to a nanoparticle is expected to be efficient way to improve the activity of the photosensitizer on the targeted tissue. It is known that the integrated molecules not only show better accumulation on tumor tissue but also reduce toxicity in healthy tissues. In this study, the ZnPc molecule was synthesized and integrated to the TiO2 nanoparticle, to investigate the potential of PDT and its cytotoxicity...
November 14, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/29131373/differentially-expressed-mirna-210-during-follicular-luteal-transition-regulates-pre-ovulatory-granulosa-cell-function-targeting-hras-and-efna3
#13
Astha Shukla, Sunita Dahiya, Suneel Kumar Onteru, Dheer Singh
Ovarian folliculogenesis, ovulation and luteinization are an important prerequisite for fertility performance in mammals. Spatial and temporal key factors and proteins for their regulation are well known. Recent advancement in the field of molecular biology led to the discovery of another class of gene regulators, microRNA (miRNA). Previous studies on profiling of miRNA in buffalo ovaries revealed that miRNA-210 (miR-210) is differently expressed in follicular-luteal transition. Therefore, the present study was planned to ascertain the role of miR-210 in buffalo granulosa cells...
November 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29125883/a-genetic-variant-of-mir-335-binding-site-in-the-erbb4-3-utr-is-associated-with-prognosis-of-ovary-cancer
#14
Ping Wei, Ling Li, Zhihu Zhang, Wei Zhang, Ming Liu, Xiugui Sheng
BACKGROUND: Ovarian cancer is one of the leading gynecologic malignancies globally, the 5-year survival rate for patients with advanced stage ovarian cancer is very low. Our objective was to test the hypothesis that miR-335 was associated with the survival of patients with ovarian cancer. METHOD: Bioinformatics tools and luciferase report assay were used to select the target of miR-335, and real-time PCR was used to detect the expression of miR-335 and ERBB4 in different genotype groups...
November 10, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29121269/individualized-versus-standard-fsh-dosing-in-women-starting-ivf-icsi-an-rct-part-2-the-predicted-hyper-responder
#15
Simone C Oudshoorn, Theodora C van Tilborg, Marinus J C Eijkemans, G Jur E Oosterhuis, Jaap Friederich, Marcel H A van Hooff, Evert J P van Santbrink, Egbert A Brinkhuis, Jesper M J Smeenk, Janet Kwee, Corry H de Koning, Henk Groen, Cornelis B Lambalk, Ben Willem J Mol, Frank J M Broekmans, Helen L Torrance
STUDY QUESTION: Does a reduced FSH dose in women with a predicted hyper response, apparent from a high antral follicle count (AFC), who are scheduled for IVF/ICSI lead to a different outcome with respect to cumulative live birth rate and safety? SUMMARY ANSWER: Although in women with a predicted hyper response (AFC > 15) undergoing IVF/ICSI a reduced FSH dose (100 IU per day) results in similar cumulative live birth rates and a lower occurrence of any grade of ovarian hyperstimulation syndrome (OHSS) as compared to a standard dose (150 IU/day), a higher first cycle cancellation rate and similar severe OHSS rate were observed...
November 7, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29115663/endogenous-annexin-a1-anxa1-modulates-early-phase-gestation-and-offspring-sex-ratio-skewing
#16
Cristina Bichels Hebeda, Isabel Daufenback Machado, Isadora Reif-Silva, Jusciele Brogin Moreli, Sonia Maria Oliani, Suchita Nadkarni, Mauro Perretti, Estela Bevilacqua, Sandra H P Farsky
Annexin A1 (AnxA1) is a glucocorticoid-regulated anti-inflammatory protein secreted by phagocytes and other specialised cells. In the endocrine system, AnxA1 controls secretion of steroid hormones and it is abundantly expressed in the testis, ovaries, placenta and seminal fluid, yet its potential modulation of fertility has not been described. Here we observed that AnxA1 knockout (KO) mice delivered a higher number of pups, with a higher percentage of female offsprings. This profile was not dependent on the male features, as sperm from KO male mice did not present functional alterations, and had an equal proportion of Y and X chromosomes, comparable to wild type (WT) male mice...
November 8, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29106780/temperatures-during-flower-bud-development-affect-pollen-germination-self-incompatibility-reaction-and-early-fruit-development-of-clementine-citrus-clementina-hort-ex-tan
#17
Gaetano Distefano, Alessandra Gentile, Afif Hedhly, Stefano La Malfa
One of the key environmental factors affecting plant reproductive systems is temperature. Characterising these effects is especially relevant for some commercially important genera such as Citrus. In this genus, failure of fertilisation results in parthenocarpic fruit development and seedlessness, which is a much prized character. Here, we characterise the effects of temperature on flower and ovary development, and on pollen-pistil interactions in 'Comune' clementine (Citrus clementina Hort. ex Tan.). We examine flower-bud development, in vitro pollen germination and pollen-pistil interaction at different temperatures (15, 20, 25 or 30 °C)...
November 6, 2017: Plant Biology
https://www.readbyqxmd.com/read/29106748/solitary-fibrous-tumor-of-the-female-genital-tract-a-clinicopathologic-analysis-of-25-cases
#18
Eric J Yang, Brooke E Howitt, Christopher Dm Fletcher, Marisa R Nucci
AIMS: Solitary fibrous tumor (SFT) is an uncommon spindle cell neoplasm of fibroblastic origin, first described as a tumor of the pleura and now well established at extrapleural sites. However, SFT in the female genital tract is rare and therefore not fully characterized. MATERIAL AND RESULTS: We describe a series of 25 SFTs arising throughout the gynecologic tract, including vulva (14 cases), vagina (1), cervix (1), uterus (6), ovary (2) and fallopian tube (1)...
November 6, 2017: Histopathology
https://www.readbyqxmd.com/read/29106744/germ-cell-tumor-growth-patterns-originating-from-clear-cell-carcinomas-of-the-ovary-and-endometrium-a-comparative-immunohistochemical-study-favouring-their-origin-from-somatic-stem-cells
#19
F F Nogales, J Prat, M Schuldt, N Cruz-Viruel, B Kau, E D'Angelo, X Matias-Guiu, A Vidal, W G McCluggage, J W Oosterhuis
AIMS: To report a series of 11 ovarian and one endometrial neoplasm in elderly patients with mixed clear cell tumour and germ cell tumour (GCT) components, to compare their immunohistochemical and demonstrate a putative stem cell population. METHODS AND RESULTS: The clear cell tumours included 11 clear cell carcinomas (CCC) and 1 borderline clear cell tumour, while the GCT always included glandular yolk sac tumour (YST). In 4 cases, there were also foci of teratoma with immature neuroepithelial and endodermal tissues, and undifferentiated areas showing true embryoids...
November 6, 2017: Histopathology
https://www.readbyqxmd.com/read/29105397/the-impact-of-genetic-variation-and-gene-expression-level-of-the-follicle-stimulating-hormone-receptor-on-ovarian-reserve
#20
Zeinab Ghezelayagh, Mehdi Totonchi, Shabnam Zarei-Moradi, Ommolbanin Asadpour, Saman Maroufizadeh, Poopak Eftekhari-Yazdi, Hamid Gourabi, Anahita Mohseni-Meybodi
OBJECTIVES: Ovarian reserve is defined as the capacity of the ovary to provide fertile oocytes. Diminished ovarian reserve (DOR) is a disorder in which ovaries are prone to go through early menopause. Where this loss of function occurs before the age of 40, it results in the premature ovarian failure (POF) disease. Throughout folliculogenesis, the follicle-stimulating hormone receptor (FSHR) starts a signaling cascade in the granulosa cells where its inactivation leads to the arrest of follicle maturation and therefore adversely affects ovarian reserve...
January 2018: Cell Journal
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