8. The combined effects of quercetin and octreotide on the expression of telomerase in human breast carcinoma cell lines MCF-7 and MDA-MB-231:Expression of telomerase was downregulated by quercetin cooperated with octreotide in MCF-7 and MDA-MB-231 cells.
Methods: Telomerase-PCR-ELISA was used to measure the expression of telomerase of peripheral blood mononuclear cells in 48 patients with malignant tumor, 34 patients with benign tumor and 38 healthy person as control group.
Effect of Serum of Mice Treated with Qilingyiganjian and Its Liquid of CO_2 Supercritical Fluid Extraction on Telomerase Expression in Hepatic Carcinoma Cell Line H_(22)
In contrast, 81 out of the 94 patients with cancers were positive for telomerase expression ( P <0.001), 1 of 12 with gastric adenomas and 1 of 9 gastric ulcer also were positive for telomerase expression.
Results: The positive rates of telomerase assay by the two methods in NPC, NPC adjacent tissues, chronic nasopharyngitis and HNE1 cell lines were 84.2% to 85.2%, 73.3% to 69.2%, 5.3% to 12.1% and 95.5% to 91.2%, respectively.
Abstract: Previously, we identified a novel correlation between the upregulated expression of telomerase (hTERT) and cytochrome P450 1A1 (CYP1A1) in A549 human lung cancer cell line.
Expression of telomerase gene mTR in the testis of SD rats and its significance
To study the expression of mTR gene in the testis of SD rats with varied ages and its significance,in situ hybridization (ISH) techniques were applied to detect the expression of telomerase gene mTR mRNA in the testis of SD rats.
To study the expression of mTERT gene in the testis of SD rats and its significance, in situ hybridization (ISH) techniques were used to detect the expression of telomerase gene mTERT mRNA in the testis of SD rats.
Detection of telomerase activity and the expression of telomerase subunits in the patients with acute myelogenous leukaemia
There was a significant correlation between the expression of telomerase with histological grade (ω=0.44, P>amp;lt;0.005), but no correlation was found between telomerase expression and HPV-18 (P>amp;gt;0.05).
These discoveries have led to the proposal that telomerase expression can be used as a helpful marker for diagnostic and prognostic purposes in humans.
Therefore, we conclude that AdTE1 is preferentially attenuated only in cells that are permanently devoid of telomerase expression such as senescent cells.
We investigated whether testicular telomerase activity is due to telomerase expression in all cells or expression in a limited number of cells.
Regulation of telomerase expression in human lymphocytes
Shortening of the chromosome causedby DNA incompleted replication of chromosomeend (telomeres) at each cell division leads thecells to lose proliferative capacity and senescence.Telomerase elongates telomeric DNA.And the unlimted cell proliferation needs telomerase activation. About 85% of malignacyexpress positive for telomerase.The formationsand functions of telomeres and the effects oftelomerase on the telomere synthessis arereviewed.The measuring of telomerase and therelationship between cancer cell and...
Shortening of the chromosome causedby DNA incompleted replication of chromosomeend (telomeres) at each cell division leads thecells to lose proliferative capacity and senescence.Telomerase elongates telomeric DNA.And the unlimted cell proliferation needs telomerase activation. About 85% of malignacyexpress positive for telomerase.The formationsand functions of telomeres and the effects oftelomerase on the telomere synthessis arereviewed.The measuring of telomerase and therelationship between cancer cell and activation oftelomerase are also introduced.The possibility ofthe cancer treatment by the telomerase inhibitionis discussed.
Using a polymerase chain reaction based telomerase activity assay (TRAP),we examined telomerase activity in 5 normal bladder tissues, 4 bladder infection tissues, 42 bladder cancer tissues and 42 adjacent noncancerous bladder tissues. None of the normal and inflammatory bladder tissue exhibited telomerase activity. 32 of the 42(76.19%) bladder cancer tissues revealed telomerase activity. In the adjacent normal tissue taken from the bladder cancer, 11 of the 42(26.19%) were telomerase positive. The telomerase...
Using a polymerase chain reaction based telomerase activity assay (TRAP),we examined telomerase activity in 5 normal bladder tissues, 4 bladder infection tissues, 42 bladder cancer tissues and 42 adjacent noncancerous bladder tissues. None of the normal and inflammatory bladder tissue exhibited telomerase activity. 32 of the 42(76.19%) bladder cancer tissues revealed telomerase activity. In the adjacent normal tissue taken from the bladder cancer, 11 of the 42(26.19%) were telomerase positive. The telomerase is more frequently activated in advance ,not well differentiation bladder tumors. The results indicate: telomerase activation has strong relationship with the invasion and development of bladder cancer. The telomerase activation of the paracancer tissue shows the possibility of microinvasion.
To understand the expression patterns of telomerase activity in different types of acute leukemia(AL) and during remission state, the mononuclear cells of different bone marrow samples were isolated by desity gradient centrifugation. Telomerase activity of the samples was assayed by telomeric repeat amplification protocol(TRAP) with the cell extracts and the TRAP products were resolved in PAGE. The results showed that the telomerase activity was at higher levels in the acute leukemia compared with the normal...
To understand the expression patterns of telomerase activity in different types of acute leukemia(AL) and during remission state, the mononuclear cells of different bone marrow samples were isolated by desity gradient centrifugation. Telomerase activity of the samples was assayed by telomeric repeat amplification protocol(TRAP) with the cell extracts and the TRAP products were resolved in PAGE. The results showed that the telomerase activity was at higher levels in the acute leukemia compared with the normal controls. Of the acute nonlymphocytic leukemia(ANLL), the telomerase activity presented as M2a>M5b>M1>M3b. Of the acute lymphocytic leukemia(ALL), the acitivity presented as L1>L2. The activity assayed in M2a and L2 remission was as high as that in the normal group. It indicated that the expression of telomerase was enhanced differently among the subtypes of ANLL and ALL, and was downregulated during the AL remission. It implicates that the expression patterns of telomerase activity in AL is associated with the different proliferation states and differentiation properties of the AL cells.