Preliminary investigations on the effect of low-pressure treatment on in vitro and in vivo growth of Penicillium sp. in oranges

2021 ◽  
pp. 55-58
Author(s):  
J. Archer ◽  
P. Pristijono ◽  
Q. Gallien ◽  
L. Houizot ◽  
M. Bullot ◽  
...  
Keyword(s):  
Low Pressure ◽  
Pressure Treatment ◽  
Penicillium Sp ◽  
In Vivo Growth

scholarly journals Regeneration linked miRNA modify tumor phenotype and can enforce multi-lineage growth arrest in vivo

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Siamak Salehi ◽  
Oliver D. Tavabie ◽  
Augusto Villanueva ◽  
Julie Watson ◽  
David Darling ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Growth Inhibition ◽  
Tumor Aggressiveness ◽  
Novel Treatment ◽  
Tumor Phenotype ◽  
Aggressive Tumor ◽  
In Vivo Growth ◽  
Regulation Of Regeneration

AbstractRegulated cell proliferation is an effector mechanism of regeneration, whilst dysregulated cell proliferation is a feature of cancer. We have previously identified microRNA (miRNA) that regulate successful and failed human liver regeneration. We hypothesized that these regulators may directly modify tumor behavior. Here we show that inhibition of miRNAs -503 and -23a, alone or in combination, enhances tumor proliferation in hepatocyte and non-hepatocyte derived cancers in vitro, driving more aggressive tumor behavior in vivo. Inhibition of miRNA-152 caused induction of DNMT1, site-specific methylation with associated changes in gene expression and in vitro and in vivo growth inhibition. Enforced changes in expression of two miRNA recapitulating changes observed in failed regeneration led to complete growth inhibition of multi-lineage cancers in vivo. Our results indicate that regulation of regeneration and tumor aggressiveness are concordant and that miRNA-based inhibitors of regeneration may constitute a novel treatment strategy for human cancers.

Asian ginseng extract inhibits in vitro and in vivo growth of mouse lewis lung carcinoma via modulation of ERK-p53 and NF-κB signaling

2010 ◽  
Vol 111 (4) ◽  
pp. 899-910 ◽  
Author(s):  
Vincent Kam Wai Wong ◽  
Simon Shiu Fai Cheung ◽  
Ting Li ◽  
Zhi-Hong Jiang ◽  
Jing-Rong Wang ◽  
...  
Keyword(s):  
Lung Carcinoma ◽  
Lewis Lung Carcinoma ◽  
Lewis Lung ◽  
Ginseng Extract ◽  
In Vivo Growth

scholarly journals The tumor dormant state. Comparison of L5178Y cells used to establish dormancy with those that emerge after its termination.

1979 ◽  
Vol 149 (3) ◽  
pp. 745-757 ◽  
Author(s):  
K J Weinhold ◽  
D A Miller ◽  
E F Wheelock
Keyword(s):  
Tumor Cells ◽  
Antigen Expression ◽  
Cell Subpopulation ◽  
Effector Cells ◽  
Dormant State ◽  
Quantitative Absorption ◽  
Tumor Outgrowth ◽  
In Vivo Growth

The tumor dormant state established in L5178Y immunized and challenged mice is characterized by a prolonged period of clinical normalcy followed by rapid tumor outgrowth. The tumor cells which emerged after termination of the tumor dormant state had abnormal marker chromosomes identical to those in the L5178Y cells used in the original challenge inoculum, indicating that the emergent tumor cells were progeny of the challenge inoculum. Original and emergent L5178Y cells had equivalent in vivo growth rates, when inoculated into normal DBA/2 mice. The emergent L5178Y cells were less susceptible than original cells to in vitro lysis by tumor dormant PC. Original and emergent L5178Y cells expressed common tumor-associated target antigens for cytolytic effector cells. Both modulation and masking of these target antigens were ruled out as mechanisms for decreased susceptibility to cell-mediated cytolysis. Immunofluorescence revealed heterogeneity in tumor-associated antigen expression within both original and emergent cell populations, with a decreased intensity of staining in the emergent population. Both populations were equally susceptible to lysis by alloimmune cells, alloantiserum, and anti-Thy 1.2 serum, but emergent cells were less susceptible to lysis by serum directed against L5178Y TAA. Quantitative absorption revealed that the emergent L5178Y cells expressed eightfold less serologically detectable TAA than the original cells. These findings indicate that the host immune response developing during establishment of the tumor dormant state selects a stable tumor cell subpopulation which expresses decreased amounts of surface tumor-associated target antigens.

scholarly journals In Vitro and In Vivo Fitness of Respiratory Syncytial Virus Monoclonal Antibody Escape Mutants

2006 ◽  
Vol 80 (23) ◽  
pp. 11651-11657 ◽  
Author(s):  
Xiaodong Zhao ◽  
Enmei Liu ◽  
Fu-Ping Chen ◽  
Wayne M. Sullender
Keyword(s):  
Cell Culture ◽  
Monoclonal Antibody ◽  
Respiratory Syncytial Virus ◽  
Viral Population ◽  
Nucleotide Substitutions ◽  
Cotton Rats ◽  
Syncytial Virus ◽  
In Vivo Growth

ABSTRACT Respiratory syncytial virus (RSV) is the only infectious disease for which a monoclonal antibody (MAb) is used in humans. Palivizumab (PZ) is a humanized murine MAb to the F protein of RSV. PZ-resistant viruses appear after in vitro and in vivo growth of RSV in the presence of PZ. Fitness for replication could be a determinant of the likelihood of dissemination of resistant viruses. We assessed the fitness of two PZ-resistant viruses (F212 and MP4). F212 grew less well in cell culture than the parent A2 virus and was predicted to be less fit than A2. Equal amounts of F212 and A2 were mixed and passaged in cell culture. F212 disappeared from the viral population, indicating it was less fit than the A2 virus. The MP4 virus grew as well as A2 in culture and in cotton rats. A2/MP4 virus input ratios of 1:1, 10:1, 100:1, and 1,000:1 were compared in competitive replication. For all input ratios except 1,000:1, the MP4 virus became dominant, supplanting the A2 virus. The MP4 virus also dominated the A2 virus during growth in cotton rats. Thus, the mutant MP4 virus was more fit than A2 virus in both in vitro and in vivo competitive replication. Whether this fitness difference was due to the identified nucleotide substitutions in the F gene or to mutations elsewhere in the genome is unknown. Understanding the mechanisms by which mutant virus fitness increased or decreased could prove useful for consideration in attenuated vaccine design efforts.

Dimethyladamantylmaleimide-induced in vitro and in vivo growth inhibition of human colon cancer Colo205 cells

2002 ◽  
Vol 13 (5) ◽  
pp. 533-543 ◽  
Author(s):  
Jane-Jen Wang ◽  
Yaw-Terng Chern ◽  
Yuh-Fang Chang ◽  
Tsung-Yun Liu ◽  
Chin-Wen Chi
Keyword(s):  
Colon Cancer ◽  
Growth Inhibition ◽  
Human Colon ◽  
Human Colon Cancer ◽  
In Vivo Growth

scholarly journals Effects of Essential Oils to Control Penicillium Sp. In In Vitro and in In Vivo on Grapevine (Vitis Vinifera L.) Fruit

2020 ◽  
Vol 20 (sup2) ◽  
pp. 812-826
Author(s):  
Mehdi Jahani ◽  
Mahdiyeh Beheshti ◽  
Mohammad Hossein Aminifard ◽  
Atefeh Hosseini
Keyword(s):  
Vitis Vinifera ◽  
Essential Oils ◽  
Vitis Vinifera L ◽  
Penicillium Sp

Chondrosarcoma growth: influence of diabetes, caloric restriction, and insulin treatment

1981 ◽  
Vol 241 (2) ◽  
pp. E129-E135 ◽  
Author(s):  
W. D. McCumbee ◽  
H. E. Lebovitz
Keyword(s):  
Insulin Treatment ◽  
Streptozotocin Diabetes ◽  
Diabetic Rats ◽  
Diet Restriction ◽  
Cartilage Growth ◽  
Serum Pool ◽  
In Vivo Growth

Diabetes and malnutrition result in decreased somatomedin production and cartilage growth in rats. The growth and metabolism of the Swarm rat chondrosarcoma are dramatically affected by somatomedins. Data presented here show that streptozotocin diabetes and diet restriction inhibit in vivo chondrosarcoma growth. Tumors grown in diabetic rats were significantly smaller than tumors grown in diet-restricted rats showing the same changes in body weight. Insulin treatment increased the rate of tumor growth in diabetic rats. Tumors grown in rigidly controlled diabetic rats were as large as tumors grown in nondiabetic controls. Diet restriction and diabetes reduced the capacity of the serum of the rat to stimulate alpha-amino[14C]isobutyrate uptake and [3H]uridine incorporation into RNA in chondrosarcoma pieces grown in nondiabetic rats. This somatomedin activity of the serum was restored by treating diabetic rats with insulin. There was a significant correlation between the in vitro stimulatory effect of a particular serum pool on chondrosarcoma metabolism and in vivo chondrosarcoma growth in the animals from whom the serum was obtained. These studies demonstrate that the in vivo growth of malignant chondrocytes is similar to that of normal chondrocytes with respect to the role of nutrition and insulin.

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