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https://www.readbyqxmd.com/read/28197632/pgrmc1-dependent-autophagy-by-hyperoside-induces-apoptosis-and-sensitizes-ovarian-cancer-cells-to-cisplatin-treatment
#1
Xiaofei Zhu, Mingde Ji, Yue Han, Yuanyuan Guo, Wenqiang Zhu, Feng Gao, Xuewen Yang, Chunbing Zhang
Cisplatin treatment some times leads to chemoresistance, which is now acknowledged partially due to the inductive expression of progesterone receptor membrane component (PGRMC)1 in ovarian cancer cells. PGRMC1 enhances autophagy, activates cytochrome p450, and inveigles signaling pathways to promote cell survival and reduce the effect of drug treatments. In this study, we give first line evidence that hyperoside inhibits cell viability, triggers autophagy and apoptosis in ovarian cancer cell lines. Mechanistically, PGRMC1-dependent autophagy was utilized by hyperoside to induce apoptotic cell death...
March 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28120522/sigma-2-receptor-expression-levels-in-blood-and-bladder-from-healthy-and-bladder-cancer-cattle
#2
V Russo, C Inglese, L Avallone, F Roperto, C Abate, N Zizzo, J S Munday, F Berardi, N A Colabufo, S Roperto
The expression of sigma-2 receptor (S2R) was assayed in blood and bladder samples from healthy cattle and in blood and bladder of cattle with deltapapillomavirus-associated urothelial tumors. Samples of bladder from cattle with neoplasia had significantly higher S2R than samples of bladder from healthy cattle (95% CI 0.31-0.82, P < 0.05). In addition, significantly higher S2R was detected in the blood of cattle with bladder cancer than blood from healthy cattle (95% CI 0.22-0.41, P < 0.05). The results provide evidence that increased expression of SR2 in blood could be useful as circulating biomarker for bladder cancer in cattle...
January 25, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28117714/tissue-non-specific-genes-and-pathways-associated-with-diabetes-an-expression-meta-analysis
#3
Hao Mei, Lianna Li, Shijian Liu, Fan Jiang, Michael Griswold, Thomas Mosley
We performed expression studies to identify tissue non-specific genes and pathways of diabetes by meta-analysis. We searched curated datasets of the Gene Expression Omnibus (GEO) database and identified 13 and five expression studies of diabetes and insulin responses at various tissues, respectively. We tested differential gene expression by empirical Bayes-based linear method and investigated gene set expression association by knowledge-based enrichment analysis. Meta-analysis by different methods was applied to identify tissue non-specific genes and gene sets...
January 21, 2017: Genes
https://www.readbyqxmd.com/read/28107520/pgrmc1-is-a-novel-potential-tumor-biomarker-of-human-renal-cell-carcinoma-based-on-quantitative-proteomic-and-integrative-biological-assessments
#4
Dan Zhang, Xiangying Xia, Xixi Wang, Peng Zhang, Weiliang Lu, Yamei Yu, Shi Deng, Hanshuo Yang, Hongxia Zhu, Ningzhi Xu, Shufang Liang
Progesterone receptor membrane component 1 (PGRMC1) is widely observed with an elevated level in multiple human cancers. However, the roles of PGRMC1 in renal cancer are not clear and merit further study. In this report, we made a systematic, integrative biological assessment for PGRMC1 in renal cell carcinoma (RCC) by a quantitative proteomic identification, immunohistochemical detection, and its clinic pathologic significance analysis. We found that PGRMC1 abundance is increased by 3.91-fold in RCC tissues compared with its autologous para-cancerous tissues by a quantitative proteome identification...
2017: PloS One
https://www.readbyqxmd.com/read/28104494/thoughts-on-interactions-between-pgrmc1-and-diverse-attested-and-potential-hydrophobic-ligands
#5
REVIEW
Michael A Cahill, Amy E Medlock
Progesterone Receptor Membrane Component 1 (PGRMC1) is located in many different subcellular locations with many different attested and probably location-specific functions. PGRMC1 was recently identified in the mitochondrial outer membrane where it interacts with ferrochelatase, the last enzyme in the heme synthetic pathway. It has been proposed that PGRMC1 may act as a chaperone to shuttle newly synthesized heme from the mitochondrion to cytochrome P450 (cyP450) enzymes. Here we consider potential roles that PGRMC1 may play in transferring heme, and other small hydrophobic ligands such as cholesterol and steroids, between the hydrophobic compartment of the membrane lipid bilayer interior to aqueous proteins, and perhaps to the membranes of other organelles...
January 16, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28007569/sigma-2-receptor-and-progesterone-receptor-membrane-component-1-pgrmc1-are-two-different-proteins-proofs-by-fluorescent-labeling-and-binding-of-sigma-2-receptor-ligands-to-pgrmc1
#6
Maria Laura Pati, Diana Groza, Chiara Riganti, Joanna Kopecka, Mauro Niso, Francesco Berardi, Sonja Hager, Petra Heffeter, Miwa Hirai, Hitoshi Tsugawa, Yasuaki Kabe, Makoto Suematsu, Carmen Abate
A controversial relationship between sigma-2 and progesterone receptor membrane component 1 (PGRMC1) proteins, both representing promising targets for the therapy and diagnosis of tumors, exists since 2011, when the sigma-2 receptor was reported to be identical to PGRMC1. Because a misidentification of these proteins will lead to biased future research hampering the possible diagnostic and therapeutic exploitation of the two targets, there is the need to solve the debate on their identity. With this aim, we have herein investigated uptake and distribution of structurally different fluorescent sigma-2 receptor ligands by flow cytometry and confocal microscopy in MCF7 cells, where together with intrinsic sigma-2 receptors, PGRMC1 was constitutively present or alternatively silenced or overexpressed...
December 19, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28007532/role-of-g-protein-coupled-estrogen-receptor-gper-gpr30-in-maintenance-of-meiotic-arrest-in-fish-oocytes
#7
REVIEW
Peter Thomas
An essential role for GPER (formerly known as GPR30) in regulating mammalian reproduction has not been identified to date, although it has shown to be involved in the regulation a broad range of other estrogen-dependent functions. In contrast, an important reproductive role for GPER in the maintenance of oocyte meiotic arrest has been identified in teleost fishes, which is briefly reviewed here. Recent studies have clearly shown that ovarian follicle production of estradiol-17β (E2) maintains meiotic arrest in several teleost species through activation of GPER coupled to a stimulatory G protein (Gs) on oocyte plasma membranes resulting in stimulation of cAMP production and maintenance of elevated cAMP levels...
March 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28005395/conditional-ablation-of-progesterone-receptor-membrane-component-2-causes-female-premature-reproductive-senescence
#8
N C Clark, C A Pru, S P Yee, J P Lydon, J J Peluso, J K Pru
The non-classical progesterone receptors, progesterone receptor membrane component (PGRMC) 1 and PGRMC2 have been implicated in regulating cell survival of endometrial and ovarian cells in vitro and are abundantly expressed in these cell types. The objective of this study was to determine if Pgrmc1 and Pgrmc2 are essential for normal female reproduction. To accomplish this objective, Pgrmc1 and/or Pgrmc2 floxed mice (Pgrmc2(fl/fl) and Pgrmc1/2(fl/fl)) were crossed with Pgr-cre mice which resulted in the conditional ablation of Pgrmc1 and/or Pgrmc2 from female reproductive tissues (i...
December 22, 2016: Endocrinology
https://www.readbyqxmd.com/read/27997272/progesterone-receptors-and-proliferation-of-the-endometrium-in-obese-women-with-polycystic-ovary-syndrome-a-lifestyle-intervention-study
#9
M Paulson, L Sahlin, A L Hirschberg
CONTEXT: Polycystic ovary syndrome (PCOS) is associated with increased risk of endometrial cancer. This is usually explained by chronic anovulation and deficient progesterone activity. However, the role of progesterone receptors (PRs) in endometrial proliferation is unclear. OBJECTIVE: To evaluate PRs in relation to endometrial proliferation in women with PCOS. DESIGN: Cross-sectional study and lifestyle intervention. SETTINGS: Clinical and laboratory research unit at a university hospital...
December 20, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27926996/small-molecule-modulator-of-sigma-2-receptor-is-neuroprotective-and-reduces-cognitive-deficits-and-neuroinflammation-in-experimental-models-of-alzheimer-s-disease
#10
Bitna Yi, James J Sahn, Pooneh Memar Ardestani, Andrew K Evans, Luisa L Scott, Jessica Z Chan, Sangeetha Iyer, Ashley Crisp, Gabriella Zuniga, Jonathan T Pierce, Stephen F Martin, Mehrdad Shamloo
Accumulating evidence suggests that modulating the sigma 2 receptor (Sig2R) can provide beneficial effects for neurodegenerative diseases. Herein, we report the identification of a novel class of Sig2R ligands and their cellular and in vivo activity in experimental models of Alzheimer's disease (AD). We report that SAS-0132 and DKR-1051, selective ligands of Sig2R, modulate intracellular Ca(2+) levels in human SK-N-SH neuroblastoma cells. The Sig2R ligands SAS-0132 and JVW-1009 are neuroprotective in a C. elegans model of amyloid precursor protein-mediated neurodegeneration...
February 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27859822/expression-of-steroidogenic-enzymes-and-steroid-receptors-in-foetal-gonads-of-domestic-cat-sex-similarities-and-differences
#11
B C Braun, K Jewgenow
Foetal gonads already produce steroid hormones and by this influence the further development of external and internal genitalia as well as of the brain. Beside this, foetal gonads themselves can be influenced by foetal or maternal hormones. The time course of foetal gonadal development can differ between species. As knowledge on processes in domestic cats is very limited, the steroidogenic enzyme expressions as well as these of steroid receptors were analysed in foetal gonads of domestic cats. We investigated a period from beginning of the second half of pregnancy to the beginning of the third trimester; a phase, where also gonadal development proceeds...
November 15, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27848973/progesterone-receptor-membrane-component-1-mediates-progesterone-induced-suppression-of-oocyte-meiotic-prophase-i-and-primordial-folliculogenesis
#12
Meng Guo, Cheng Zhang, Yan Wang, Lizhao Feng, Zhengpin Wang, Wanbo Niu, Xiaoyan Du, Wang Tang, Yuna Li, Chao Wang, Zhenwen Chen
Well-timed progression of primordial folliculogenesis is essential for mammalian female fertility. Progesterone (P4) inhibits primordial follicle formation under physiological conditions; however, P4 receptor that mediates this effect and its underlying mechanisms are unclear. In this study, we used an in vitro organ culture system to show that progesterone receptor membrane component 1 (PGRMC1) mediated P4-induced inhibition of oocyte meiotic prophase I and primordial follicle formation. We found that membrane-impermeable BSA-conjugated P4 inhibited primordial follicle formation similar to that by P4...
November 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27846214/proteomic-profiling-for-identification-of-novel-biomarkers-differentially-expressed-in-human-ovaries-from-polycystic-ovary-syndrome-patients
#13
Li Li, Jiangyu Zhang, Qingshan Deng, Jieming Li, Zhengfen Li, Yao Xiao, Shuiwang Hu, Tiantian Li, Qiuxiao Tan, Xiaofang Li, Bingshu Luo, Hui Mo
OBJECTIVES: To identify differential protein expression pattern associated with polycystic ovary syndrome (PCOS). METHODS: Twenty women were recruited for the study, ten with PCOS as a test group and ten without PCOS as a control group. Differential in-gel electrophoresis (DIGE) analysis and mass spectroscopy were employed to identify proteins that were differentially expressed between the PCOS and normal ovaries. The differentially expressed proteins were further validated by western blot (WB) and immunohistochemistry (IHC)...
2016: PloS One
https://www.readbyqxmd.com/read/27763693/progesterone-analogue-protects-stressed-photoreceptors-via-bfgf-mediated-calcium-influx
#14
Alice C Wyse-Jackson, Sarah L Roche, Ana M Ruiz-Lopez, Jennifer N Moloney, Ashleigh M Byrne, Thomas G Cotter
Retinitis pigmentosa (RP) is a degenerative retinal disease leading to photoreceptor cell loss. In 2011, our group identified the synthetic progesterone 'Norgestrel' as a potential treatment for RP. Subsequent research showed Norgestrel to work through progesterone receptor membrane component 1 (PGRMC1) activation and upregulation of neuroprotective basic fibroblast growth factor (bFGF). Using trophic factor deprivation of 661W photoreceptor-like cells, we aimed to further elucidate the mechanism leading to Norgestrel-induced neuroprotection...
December 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27749742/increased-expression-of-progesterone-receptor-membrane-component-1-is-associated-with-aggressive-phenotype-and-poor-prognosis-in-er-positive-and-negative-breast-cancer
#15
Xiangyan Ruan, Ying Zhang, Alfred O Mueck, Marina Willibald, Harald Seeger, Tanja Fehm, Sara Brucker, Hans Neubauer
OBJECTIVE: Expression of progesterone receptor membrane component 1 (PGRMC1) has been shown to be higher in breast cancer than normal tissue. We have previously shown that certain progestogens strongly stimulate proliferation of breast cancer cells overexpressing PGRMC1, and therefore hypothesize that PGRMC1 may play a critical role in breast cancer progression. Because little information is available if expression of PGRMC1 is also associated with worse prognosis for breast cancer patients, in this study we investigated the clinicopathologic significance of PGRMC1 expression in breast cancer tissue...
February 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27641676/progesterone-estrogen-and-androgen-receptors-in-the-corpus-luteum-of-the-domestic-cat-iberian-lynx-lynx-pardinus-and-eurasian-lynx-lynx-lynx
#16
Olga Amelkina, Lina Zschockelt, Johanna Painer, Rodrigo Serra, Francisco Villaespesa, Eberhard Krause, Katarina Jewgenow, Beate C Braun
In contrast to the species studied, the corpus luteum (CL) of Iberian and Eurasian lynx physiologically persists in the ovary for more than 2 years and continues to secrete progesterone. Such persistent CL (perCL) transition into the next cycle and are present in the ovary together with the freshly formed CL (frCL) of a new ovulation. To date, the mechanisms supporting such CL persistence are not known. We analyzed the potential receptivity of feline CL to sex steroids through mRNA measurements of progesterone receptor (PGR), progesterone receptor membrane components (PGRMC) 1 and 2, estrogen receptor (ESR) 1 and ESR2, G protein-coupled estrogen receptor 1 (GPER1), and androgen receptor (AR)...
December 2016: Theriogenology
https://www.readbyqxmd.com/read/27599036/a-novel-role-for-progesterone-receptor-membrane-component-1-pgrmc1-a-partner-and-regulator-of-ferrochelatase
#17
Robert B Piel, Mesafint T Shiferaw, Ajay A Vashisht, Jason R Marcero, Jeremy L Praissman, John D Phillips, James A Wohlschlegel, Amy E Medlock
Heme is an iron-containing cofactor essential for multiple cellular processes and fundamental activities such as oxygen transport. To better understand the means by which heme synthesis is regulated during erythropoiesis, affinity purification coupled with mass spectrometry (MS) was performed to identify putative protein partners interacting with ferrochelatase (FECH), the terminal enzyme in the heme biosynthetic pathway. Both progesterone receptor membrane component 1 (PGRMC1) and progesterone receptor membrane component 2 (PGRMC2) were identified in these experiments...
September 20, 2016: Biochemistry
https://www.readbyqxmd.com/read/27587714/pgrmc1-a-fertility-stabilizer
#18
Katie Gerhardt
No abstract text is available yet for this article.
September 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/27565814/cystathionine-%C3%AE-synthase-and-pgrmc1-as-co-sensors
#19
Yasuaki Kabe, Takehiro Yamamoto, Mayumi Kajimura, Yuki Sugiura, Ikko Koike, Mitsuyo Ohmura, Takashi Nakamura, Yasuhito Tokumoto, Hitoshi Tsugawa, Hiroshi Handa, Takuya Kobayashi, Makoto Suematsu
Heme oxygenase (HO) is a mono-oxygenase utilizing heme and molecular oxygen (O2) as substrates to generate biliverdin-IXα and carbon monoxide (CO). HO-1 is inducible under stress conditions, while HO-2 is constitutive. A balance between heme and CO was shown to regulate cell death and survival in many experimental models. However, direct molecular targets to which CO binds to regulate cellular functions remained to be fully examined. We have revealed novel roles of CO-responsive proteins, cystathionine β-synthase (CBS) and progesterone receptor membrane component 1 (PGRMC1), in regulating cellular functions...
August 24, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27452206/the-emerging-role-of-progesterone-receptor-membrane-component-1-pgrmc1-in-cancer-biology
#20
REVIEW
Michael A Cahill, Jalal A Jazayeri, Susan M Catalano, Shinya Toyokuni, Zaklina Kovacevic, Des R Richardson
Progesterone receptor membrane component 1 (PGRMC1) is a multi-functional protein with a heme-binding moiety related to that of cytochrome b5, which is a putative progesterone receptor. The recently solved PGRMC1 structure revealed that heme-binding involves coordination by a tyrosinate ion at Y113, and induces dimerization which is stabilized by hydrophobic stacking of heme on adjacent monomers. Dimerization is required for association with cytochrome P450 (cyP450) enzymes, which mediates chemoresistance to doxorubicin and may be responsible for PGRMC1's anti-apoptotic activity...
December 2016: Biochimica et Biophysica Acta
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