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31.
Grant P. Otto Minoo Razi Joëlle Morvan Frank Stenner Sharon A. Tooze 《Traffic (Copenhagen, Denmark)》2010,11(5):688-705
Membrane fusion is dependent on the function of SNAREs and their α‐helical SNARE motifs that form SNARE complexes. The Habc domains at the N‐termini of some SNAREs can interact with their associated SNARE motif, Sec1/Munc18 (SM) proteins, tethering proteins or adaptor proteins, suggesting that they play an important regulatory function. We screened for proteins that interact with the Habc domain of Syntaxin 6, and isolated an uncharacterized 164‐kDa protein that we named SHIP164. SHIP164 is part of a large (∼700 kDa) complex, and interacts with components of the Golgi‐associated retrograde protein (GARP) tethering complex. Depletion of GARP subunits or overexpression of Syntaxin 6 results in a redistribution of soluble SHIP164 to endosomal structures. Co‐overexpression of Syntaxin 6 and SHIP164 produced excessive tubulation of endosomes, and perturbed the transport of cation‐independent mannose‐6‐phosphate receptor (CI‐MPR) and transferrin receptor. Thus, we propose that SHIP164 functions in trafficking through the early/recycling endosomal system. 相似文献
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Minoo Moshtaghie Pedram Malekpouri Mohammad Reza Dinko Ali Asghar Moshtaghie 《Journal of physiology and biochemistry》2013,69(2):297-304
Due to the severe hazardous influences of lead (Pb2+) on iron-related diseases, the effects of Pb2+ on serum parameters associated with iron metabolism have been studied in this project. Male Wistar rats weighing 200–250 g were treated with Pb2+ for the short and long period of times. The animals received daily intraperitoneal injection of 100 mg Pb2+ kg?1 body weight (BW) for 5 days and 4 mg?kg?1 BW of Pb2+ for 30 and 45 days, respectively. The results show that when animals were treated with both low and high concentrations of Pb2+, serum iron concentration decreased markedly, by 23.2, 32.8, and 39.9 %, while the sera TIBC and transferrin concentrations increased significantly (p?<?0.05). Following short- and long-term exposures to Pb2+, the percentage of serum transferrin saturation was also decreased in comparison with the untreated control group (p?<?0.05). Concentrations of serum copper and ceruloplasmin following Pb2+ treatments also reduced significantly (p?<?0.05). The percentage of hematocrit and hemoglobin levels was reduced (p?<?0.05) in all Pb2+-treated animals in comparison with the controls. These results suggest that Pb2+ changes the serum parameters related to iron metabolism, which may play an important role in producing iron-related diseases. 相似文献
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Abbas Ghotaslou Amir Samii Hassan Boustani Omid Kiani Ghalesardi Minoo Shahidi 《Reports of Biochemistry & Molecular Biology》2022,11(1):111
Background:Doxorubicin (DOX)-induced cardiotoxicity appears to be a growing concern for extensive use in acute lymphoblastic leukemia (ALL). The new combination treatment strategies, therefore might be an effective way of decreasing its side effects as well as improving efficacy. AMG232 (KRT-232) is a potential MDM-2 inhibitor, increasing available p53 through disturbing p53-MDM-2 interaction. In this study, we examined the effects of AMG232 on DOX-induced apoptosis of NALM-6 cells.Methods:The anti-leukemic effects of Doxorubicin on NALM-6 cells, either alone or in combination with AMG232, were confirmed by MTT assay, Annexin/PI apoptosis assay, and cell cycle analysis. Expression of apoptosis and autophagy-related genes were further evaluated by Real time-PCR method. To investigate the effect of AMG232 on NALM-6 cells, the activation of p53, p21, MDM-2, cleaved Caspase-3 proteins was evaluated using western blot analysis.Results:The results showed that AMG232 inhibition of MDM-2 enhances Doxorubicin-induced apoptosis in NALM-6 cells through caspase-3 activation in a time and dose-dependent manner. Furthermore, co-treatment of AMG232 with Doxorubicin hampered the transition of NALM-6 cells from G1 phase through increasing p21 protein. In addition, this combination treatment led to enhanced expression of apoptosis and autophagy-related genes in ALL cell lines.Conclusion:The results declared that AMG232 as an MDM-2 inhibitor could be an effective approach to enhance antitumor effects of Doxorubicin on NALM-6 cells as well as an effective future treatment for ALL patients.Key Words: Acute Lymphoblastic Leukemia, AMG 232, Autophagy, Doxorubicin, p53 相似文献
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Scott C. Borinstein David Agamasu Jonathan S. Schildcrout Lisa Bastarache Minoo Bagheri Lea K. Davis Dan M. Roden C. Michael Stein Sara L. Van Driest Jonathan D. Mosley 《Journal of cellular and molecular medicine》2022,26(13):3628
Healthy individuals in the United States identified as having Black race have lower neutrophil counts, on average, than individuals identified as having White race, which could result in more negative diagnostic evaluations for neutropenia. To test this hypothesis, the proportion of evaluations where the final diagnosis was clinically insignificant neutropenia for Black and White individuals who underwent an evaluation by a haematologist that included a bone marrow (BM) biopsy to investigate neutropenia was assessed. 172 individuals without prior haematological diagnoses who underwent a haematological evaluation to investigate neutropenia. Individuals diagnosed with clinically insignificant neutropenia between Black and White individuals were compared using a propensity‐score‐adjusted logistic regression. Of 172 individuals, 42 (24%) were classified as Black race, 86 (50%) were males, and the 79 (46%) were over 18 years old. A BM biopsy did not identify pathology in 95% (40 of 42) of Black individuals and 68% (89 of 130) of White Individuals. Black individuals (25 of 42 [60%]) received a final diagnosis of clinically insignificant neutropenia, compared to White individuals (12 of 130 [9%]) (adjusted odds ratio =7.9, 95% CI: 3.1 – 21.1). We conclude that black individuals were more likely to receive a diagnosis of clinically insignificant neutropenia after haematological assessment. 相似文献
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Mohammad Vatanparast Vahid Hosseininaveh Mohammad Ghadamyari Seyede Minoo Sajjadian 《Journal of Asia》2012,15(4):555-561
The elm leaf beetle, Xanthogaleruca luteola, is a serious pest of elm trees in urban areas. Partial biochemical characterization of pectinases and cellulases was conducted using the larval digestive system of the pest. Midgut extracts from larvae showed optimum activity for pectinase and cellulase against pectin and carboxymethyl cellulose, respectively, under acidic conditions (pH 6). Pectinases and cellulases were respectively more stable under acidic conditions (pH 4–7) and slightly acidic conditions (pH 5–7) than under highly acidic and alkaline conditions. However, the enzymes were more stable in slightly acidic conditions (pH 6) when incubation time was increased. Maximum activity for the pectinases and cellulases incubated at different temperatures was observed at 45 and 50 °C, respectively. Mg2+ remarkably increased pectinase activity, and cellulase activity increased significantly in the presence of Ca2+ and Mg2+. Sodium dodecyl sulfate significantly decreased pectinase and cellulase activity. The Michaelis–Menten constant (KM) and the maximal reaction velocity (Vmax) values for pectinase were 2 mg·mL? 1 and 0.017 mmol·min? 1·mg? 1 protein toward pectin, respectively. Zymogram analyses revealed the presence of one and five bands of pectinase and cellulase activity, respectively, in the larval midgut extract. 相似文献
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