Abstract:
:We evaluated the role of cytoskeletal elements in the degradation of endogenous proteins via autophagy using biochemical and morphological techniques. In the absence of exogenous amino acids, degradation of endogenous proteins was enhanced in cultured normal rat kidney cells. This enhanced degradative state was accompanied by a 4-fold increase in the occurrence of autophagic vacuoles. In the presence of drugs that induce the depolymerization of microfilaments (cytochalasins B and D) or microtubules (nocodazole), protein degradation was not enhanced in nutrient-deprived cells. Although these drugs had similar inhibitory effects on the protein degradation, their effect on autophagy differed. Cytochalasins B and D interfered with the formation of the autophagosome. In cells treated with these drugs, the fractional volume represented by autophagic vacuoles was not substantially increased despite nutrient depletion. On the contrary, nocodazole appeared to have no effect on the formation of autophagosomes. Instead, this drug suppressed the delivery of hydrolytic enzymes, thereby resulting in an accumulation of acidic autophagic vacuoles containing undegraded cellular components.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Aplin A,Jasionowski T,Tuttle DL,Lenk SE,Dunn WA Jrdoi
10.1002/jcp.1041520304keywords:
subject
Has Abstractpub_date
1992-09-01 00:00:00pages
458-66issue
3eissn
0021-9541issn
1097-4652journal_volume
152pub_type
杂志文章abstract::Anti-angiogenic agents regulate tumor growth by inhibiting endothelial cell proliferation and invasion. Carboxyamido-triazole (CAI), an inhibitor of non-voltage-operated calcium entry and calcium influx-mediated pathways, has angiogenesis and invasion inhibitory activity. We hypothesized that CAI may express its anti-...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.10350
更新日期:2003-10-01 00:00:00
abstract::Schizophrenia (SZ) is characterized by a high morbidity and disability rate and has gradually increased in rate and caused much burden. However, the pathogenesis of SZ is elusive and may include changes in the biological molecules in exosomes. In this study, we first compared the alterations of plasma exosomal circula...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.29873
更新日期:2021-01-01 00:00:00
abstract::There is compelling in vitro and in vivo evidence to implicate mast cells in the development of fibrosis. However, an important question remains as to the mechanisms by which mast cells mediate fibrosis. Recent evidence from our laboratory (Gruber et al., 1997, J. Immunol. , 158:2310-2317) has revealed that tryptase, ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199911)181:2<312::AID-JCP1
更新日期:1999-11-01 00:00:00
abstract::Wg/Wnts are paracrine and autocrine ligands that activate distinct signaling pathways while being internalized through surface receptors. Converging and contrasting views are shaping our understanding of whether, where, and how endocytosis may modulate Wnt signaling. We gather considerable amount of evidences to elabo...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.24853
更新日期:2015-06-01 00:00:00
abstract::Cancer cells in poorly vascularized solid tumors are constantly or intermittently exposed to stressful microenvironments, including glucose deprivation, hypoxia, and other forms of nutrient starvation. These tumor-specific conditions, especially glucose deprivation, activate a signaling pathway called the unfolded pro...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.22085
更新日期:2010-07-01 00:00:00
abstract::Small intestinal crypt cells play a critical role in modulating Cl- secretion during digestion. The types of Cl- channels mediating Cl- secretion in the small intestine was investigated using the intestinal epithelial cell line, IEC-18, which was derived from rat small intestine crypt cells. In initial radioisotope ef...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20085
更新日期:2005-01-01 00:00:00
abstract::Glioblastoma (GB) is the most common cancer in the brain and with an increasing incidence. Despite major advances in the field, there is no curative therapy for GB to date. Many solid tumors, including GB, experienced metabolic reprogramming in order to sustain uncontrolled proliferation, hypoxic conditions, and angio...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25648
更新日期:2017-06-01 00:00:00
abstract::Cystamine together with colchicine markedly enhanced the uptake of [3H]-thymidine into DNA of quiescent cultures of insulin-stimulated Swiss 3T3 mouse fibroblasts. Flow cytofluorometric analyses showed an increased rate of transition of cells from G0/G1----S + G2 in response to combinations of insulin, colchicine, and...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041200307
更新日期:1984-09-01 00:00:00
abstract::Oral squamous cell carcinoma (OSCC) is the most common malignancy in head and neck cancer and a global cause of cancer-related death. Due to the poor survival rates associated with OSCC, there is a growing need to develop novel technologies and predictive biomarkers to improve disease diagnosis. The identification of ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28180
更新日期:2019-01-28 00:00:00
abstract::Nucleoside transporter proteins are specialized proteins that mediate the transport of nucleosides and nucleoside analog drugs across the plasma membrane. The human equilibrative nucleoside transporter 1 (hENT1) is a member of these proteins and mediates cellular entry of gemcitabine, cytarabine, and fludarabine. The ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.22045
更新日期:2010-05-01 00:00:00
abstract::Stromal cell-derived factor-1 (SDF-1) and CXC chemokine receptor 4 (CXCR4) have been found to be tightly correlated with the progression of prostate cancer (PC). In this study, we investigated the effects of an SDF-1α/CXCR4 inhibitor, AMD3100, on cell progression and metastasis potential of human PC cells. Human PC ce...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.27831
更新日期:2019-07-01 00:00:00
abstract::Exposure of neutrophils to a variety of agonists including soluble chemoattractant peptides and cytokines results in degranulation and activation of the oxidative burst (effector functions) that are required for bacterial killing. At present, the signaling pathways regulating these important functions are incompletely...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199707)172:1<94::AID-JCP11
更新日期:1997-07-01 00:00:00
abstract::Impaired cardiac control of intracellular diastolic Ca(2+) gives rise to arrhythmias. Whereas exercise training corrects abnormal cyclic Ca(2+) handling in heart failure, the effect on diastolic Ca(2+) remains unstudied. Here, we studied the effect of exercise training on the generation and propagation of spontaneous ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.22771
更新日期:2012-01-01 00:00:00
abstract::Recent data indicate that the Simian virus 40 (SV40) infection appears to be transmitted in humans independently from early SV40-contaminated antipolio vaccines. Serum antibodies against SV40 large T antigen (Tag) were analyzed in children/adolescents and young adults. To investigate antibodies reacting to SV40 Tag an...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.27490
更新日期:2019-04-01 00:00:00
abstract::The present study was designed to investigate the mechanism of myeloid differentiation protein 2 (MD2) on intestinal mucosa destruction in mice with chronic colitis. Briefly, a chronic colitis mouse model was established by the administration of dextran sulfate sodium (DSS) in transgenic mice of MD2 overexpression (Tr...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28711
更新日期:2019-11-01 00:00:00
abstract::The high requirement of O2 in the renal proximal tubule stems from a high rate of Na(+) transport. Adenosine A1 receptor (A1R) activation regulates Na(+) transport in this nephron segment. Thus, the effect of the acute activation and the mechanisms of A1R on the rate of O2 consumption were evaluated. The A1R-antagonis...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25050
更新日期:2015-12-01 00:00:00
abstract::The potential usage of curcumin in diverse human diseases has been widely studied, including arteriosclerosis (AS). This study focused on investigating the relationship between curcumin and AS-associated microRNA, which may provide a better understanding of curcumin in a different mechanism. Human microvascular endoth...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28708
更新日期:2019-11-01 00:00:00
abstract::Histone deacetylases (HDACs) play a crucial role in the regulation of gene expression through remodeling of chromatin structures. However, the molecular mechanisms involved in this event remain unknown. In this study, we sought to examine whether HDAC inhibition-mediated protective effects involved HDAC4 sumoylation, ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.24871
更新日期:2015-06-01 00:00:00
abstract::Cultured preadipose 3T3 cells are able to undergo a process of differentiation through which they are converted into adipose cells. Growth hormone induces this conversion in resting cultures but not in growing cultures. It was of interest to determine the period of cell sensitivity to the hormone and the timing of the...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041280222
更新日期:1986-08-01 00:00:00
abstract::We show that integrin alpha 5 subunit expression is stimulated when human fibrosarcoma HT1080 cells are released from quiescence. The alpha 5 subunit mRNA level in quiescent HT1080 cells was increased 24 hr after their release by 10% fetal bovine serum-containing medium reaching a maximum of 2.5 fold on day 2. Similar...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041640308
更新日期:1995-09-01 00:00:00
abstract::Established RAW264.7 cell lines for osteoclastic differentiation has been widely engaged in bone homeostasis research, however, the efficacy of RANKL independently stimulating has rarely been defined, because protocols were usually developed and modified by various laboratories. Otherwise, problematic issues are also ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.27852
更新日期:2019-07-01 00:00:00
abstract::The development of resistance accounts for therapy failure in the majority of advanced cases of neuroblastoma in children. A new transplantable murine C-1300 neuroblastoma cell line was developed in vitro, by repeated exposure of a sensitive cell line to increasing, but sublethal, doses of Homoharringtonine (HHT). The...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041480319
更新日期:1991-09-01 00:00:00
abstract::Vimentin-positive, desmin-negative cells were established in culture from the nodule and from apparently normal palmar aponeurosis of a patient with Dupuytren's disease and compared with normal human embryonic and adult fibroblasts or sarcomatous cells. Cells from the nodule display in vitro biological properties that...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041170310
更新日期:1983-12-01 00:00:00
abstract:BACKGROUND:Acute kidney injury (AKI) shows several kinds of disorders, which acutely harm the kidney. However, the current medical methods have limited therapeutic effects. The present study aimed to find out the molecular mechanism of AKI pathogenesis, which may provide new insights for future therapy. METHODS:Bioinf...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28118
更新日期:2019-08-01 00:00:00
abstract::Homeostasis of proteins involved in contractility of individual cardiomyocytes and those coupling adjacent cells is of critical importance as any abnormalities in cardiac electrical conduction may result in cardiac irregular activity and heart failure. Bcl2-associated athanogene 3 (BAG3) is a stress-induced protein wh...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28471
更新日期:2019-08-01 00:00:00
abstract::The synthesis and degradation of pectoralis myosin have been investigated in chickens 15-23 days after hatching. An essentially nonreutilizable tracer amino acid was used to demonstrate differences in the rates of synthesis and degradation of myosin isolated from normal and hypertrophied, cystrophic breast tissue. The...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040860406
更新日期:1975-10-01 00:00:00
abstract::Diabetes mellitus (DM) induces bone deterioration, while mechanical stimulation promotes osteocyte-driven bone formation. We aimed to evaluate the interaction of acute exposure (24 h) to high glucose (HG) with both the pro-survival effect conferred to osteocytic MLO-Y4 cells and osteoblastic MC3T3-E1 cells by mechanic...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25829
更新日期:2017-12-01 00:00:00
abstract::Respiratory tract epithelia are one type of tissue targeted by vitamin A. In this study the effects of vitamin A and its analogs (retinoids) on human bronchial epithelial (HBE) cells have been investigated in a serum-free hormone-supplemented medium. This serum-free medium, which was developed for the long-term cultiv...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041270110
更新日期:1986-04-01 00:00:00
abstract::Proteolytic cleavage of extracellular matrix (ECM) is a critical feature of tumor cell invasion, and affects cancer cell growth, differentiation, apoptosis, and migration. Malignant cells secrete most proteases as inactive proenzymes that undergo proteolytic cleavage for activation, and proteolytic activity is elevate...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20328
更新日期:2005-09-01 00:00:00
abstract::Previous studies demonstrated that overexpression of the type-1 insulin-like growth factor (IGF) receptor (IGF-1R) in skeletal myogenic cell lines increased proliferation and differentiation responses to IGF. However, it was unclear if such manipulations in primary, untransformed skeletal myogenic cells would result i...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199607)168:1<34::AID-JCP5>
更新日期:1996-07-01 00:00:00