The RNA component of telomerase as a marker of biologic potential and clinical outcome in childhood neuroblastic tumors
CancerPublished 1 February 1999
Anirban Maitra, Kazuo Yashima, Asha Rathi, Charles F. Timmons, Beverly Barton Rogers, Jerry W. Shay
Citations49
SJR quartileQ1
SJR score2.95
SNIP1.90
Generate an AI Snapshot to get a quick, structured summary of this paper.
Study Snapshot
ObjectiveStudy objective
MethodsResearch methodology
PopulationPopulation studied
Sample sizeSample sizes
OutcomesStudy outcomes here
ResultsStudy results comes here
LimitationsResearch study limitations comes here
A concise AI-generated summary of the paper will appear here once you click Generate AI Snapshot.
TL;DR
Telomerase is a ribonucleoprotein enzyme associated with cellular immortality that may be useful in determining the biologic potential of a tumor.
Abstract
Increased hTR expression may reflect the potential for aggressive behavior within the spectrum of NTs; conversely, down-regulation of hTR may be useful in identifying subsets with limited capacity for progression and a favorable prognosis.
Keywords
MedicineBiochemistry, Genetics and Molecular Biology
ScienceSpecific Association of Human Telomerase Activity with Immortal Cells and Cancer
7,144 Citations1994Nam W. Kim, Mieczyslaw A. Piatyszek +8 more
NatureStructure and function of telomeres
3,592 Citations1991Elizabeth H. Blackburn
The DNA of telomeres—the terminal DNA-protein complexes of chromosomes—differs notably from other DNA sequences in both structure and function, and has been shown to be essential for telomere maintenance and long-term viability.
ScienceAmplification of N- <i>myc</i> in Untreated Human Neuroblastomas Correlates with Advanced Disease Stage
2,281 Citations1984Garrett M. Brodeur, Robert C. Seeger +3 more
N-myc amplification is highly correlated with advanced stages of disease (P less than 0.001) and with the ability to grow in vitro as an established cell line, both of which are associated with a poor prognosis.
ScienceTelomerase Catalytic Subunit Homologs from Fission Yeast and Human
2,266 Citations1997Toru Nakamura, Gregg B. Morin +6 more
ScienceThe RNA Component of Human Telomerase
2,249 Citations1995Junli Feng, Walter D. Funk +14 more
Human cell lines that expressed hTR mutated in the template region generated the predicted mutant telomerase activity, and cells transfected with an antisense hTR lost telomeric DNA and began to die after 23 to 26 doublings.
NatureAmplified DNA with limited homology to myc cellular oncogene is shared by human neuroblastoma cell lines and a neuroblastoma tumour
1,422 Citations1983Manfred Schwab, Kari Alitalo +7 more
It is shown here that a DNA domain detectable by partial homology to the myc oncogene is amplified up to 140-fold in cell lines derived from different human neuroblastomas and in a neuroblastoma tumour, but not in other tumour cells showing cytological evidence for gene amplification.
Developmental GeneticsTelomerase activity in human germline and embryonic tissues and cells
1,373 Citations1996Woodring E. Wright, Mieczyslaw A. Piatyszek +3 more
Elucidation of the regulatory pathways involved in the repression of telomerase activity during development may lead to the ability to manipulate telomere levels and explore the consequences both for cellular aging and for the survival of cancer cells.
NatureControl of telomere length by the human telomeric protein TRF1
1,213 Citations1997Bas van Steensel, Titia de Lange
It is proposed that the binding of TRF1 controls telomere length in cis by inhibiting the action of telomerase at the ends of individual telomeres, and shown that the human telomeric-repeat binding factor TRF 1 is involved in this regulation.
CancerA proposed staging for children with neuroblastoma.Children's cancer study group A
953 Citations1971Audrey E. Evans, Giulio J. D’Angio +1 more
Short‐term survival data of this small sample demonstrated that the proposed staging appears to be of help in estimating the prognosis and a list of investigations which aid in accurate staging is proposed.
ScienceA Mammalian Telomerase-Associated Protein
674 Citations1997Lea Harrington, Timothy McPhail +7 more
The identification of TP1 suggests that telomerase-associated proteins are conserved from ciliates to humans, and Antiserum to TP1 immunoprecipitated telomersase activity from cell extracts, suggesting that TP1 is associated with telomerases in vivo.
Nature MedicineCorrelating telomerase activity levels with human neuroblastoma outcomes
620 Citations1995Eiso Hiyama, Keiko Hiyama +4 more
Telomerase expression may be required as a critical step in the multigenetic process of tumorigenesis, and two different pathways may exist for the development of neuroblastoma.
BloodTelomerase activity in normal leukocytes and in hematologic malignancies
614 Citations1995Christopher M. Counter, Jyothi Gupta +3 more
The results suggest that early CLL and MDS cells lack an efficient mechanism of telomere maintenance and that telomerase is activated late in the progression of these cancers, presumably when critical telomerre loss generates selective pressure for cell immortality.
Nucleic Acids ResearchModifications of a telomeric repeat amplification protocol (TRAP) result in increased reliability, linearity and sensitivity
481 Citations1995Woodring E. Wright, Jerry W. Shay +1 more
Modifications to the original protocol that resolve all of the difficulties in the assay are described, demonstrating that the molarity of these multiple amplification products causes TaqDNA polymerase to become limiting, even using a radioactive assay.
PubMedHuman telomerase RNA and telomerase activity in immortal cell lines and tumor tissues.
406 Citations1996Ariel A. Avilion, Mieczyslaw A. Piatyszek +4 more
Although the hTR levels were somewhat higher in tumor samples compared to nontumor tissues, the level of hTR in a variety of different human tumors did not predict thelevel of telomerase activity in the tumor.
Current Opinion in OncologyTelomerase activity in human cancer
400 Citations1996Jerry W. Shay, Woodring E. Wright
The chromosome ends are specialized nucleoprotein structures called telomeres, which are essential for stable chromosome maintenance in tumor-derived cell lines, which leads to the activation of telomerase, a necessary event for the sustained growth of most human tumors.
Methods in Cell ScienceDetection of telomerase activity in human cells and tumors by a telomeric repeat amplification protocol (TRAP)
392 Citations1995Mieczyslaw A. Piatyszek, Nam W. Kim +5 more
A novel procedure for the extraction and detection of telomerase activity was developed which resulted in an estimated 104 fold improvement in detectability compared with previous methods, and new methods to perform telomersase assays without the use of radioisotopes are described.
PubMedKi-67 and other proliferation markers useful for immunohistological diagnostic and prognostic evaluations in human malignancies.
307 Citations1990Johannes Gerdes
The results show that evaluation of the growth fractions by Ki-67 is not only a diagnostic importance, but also has independent prognostic value.
HistopathologyDetection of the Ki‐67 antigen in fixed and wax‐embedded sections with the monoclonal antibody MIB1
297 Citations1993David A. McCormick, Heilly Chong +3 more
Investigation of expression of MIB1 immunoreactivity in situations of DNA repair in vivo—ultraviolet irradiated human skin found it to be a robust marker of cell proliferation easily applicable to archival material.
PubMedTelomerase expression in respiratory epithelium during the multistage pathogenesis of lung carcinomas.
177 Citations1997Kazuo Yashima, Leslie A. Litzky +9 more
It is demonstrated that dysregulation of telomerase occurs early in the multistage pathogenesis of bronchogenic lung carcinomas and that intense focal localized hTR expression in CIS may indicate imminent invasion.
Journal of Clinical PathologyTelomerase in the early detection of cancer.
163 Citations1997Jerry W. Shay, Adi F. Gazdar
There is justifiable optimism regarding telomerase activity and early detection of cancer, but it is important to point out that there is much that remains to be understood and additional validation studies will be required before knowledge of telomersase activity will be useful in decisions regarding patient management.
European Journal of CancerMolecular basis for heterogeneity in human neuroblastomas
158 Citations1995Garrett M. Brodeur
It remains to be determined if tumours in one group ever evolve into a less unfavourable group, but current evidence suggests that they are distinct genetically.
CancerAge-linked prognostic categorization based on a new histologic grading system of neuroblastomas. A clinicopathologic study of 211 cases from the pediatric oncology group
113 Citations1992Vijay Joshi, Alan Cantor +12 more
The new histologic grading system has the following advantages: (1) use of familiar terminology and histologic features in the grading system and relative ease of assessment because the degree of differentiation does not need to be determined.
Journal of Clinical PathologyTelomerase activity and in situ telomerase RNA expression in malignant and non-malignant lymph nodes.
94 Citations1997Kazuo Yashima, Mieczyslaw A. Piatyszek +5 more
Although expression of telomerase by activated lymphocytes may limit its usefulness, measurement of enzyme activity combined with detection of hTR using in situ hybridisation may assist in the histopathological diagnosis of lymph nodes.
Medical Entomology and ZoologyNeuroblastoma : tumor biology and therapy
93 Citations1990Carl Pochedly
This paper presents a meta-analysis of the literature on radioiodinated MIBG in Management of Neuroblastoma and its applications in clinical management, immunology, and perspective for Future Research.
PubMedTelomerase enzyme activity and RNA expression during the multistage pathogenesis of breast carcinoma.
88 Citations1998Kazuo Yashima, Sara Milchgrub +5 more
Up-regulation of hTR may be a predictive marker for invasive tumor development in women with multistage pathogenesis of breast cancer.
PubMedAmplification of N-myc as a prognostic marker for patients with neuroblastoma.
69 Citations1993M. Schwab
An N-terminal portion of N- myc, referred to as 'Myc-boxes', can substitute for the transcription-activating function of the yeast transcription factor Gal 4, thus raising the possibility that N-myc itself may act as a transcription factor, either alone or in association with other factors.
SurgeryTelomerase activity in benign and malignant thyroid diseases
54 Citations1997Kazuo Yashima, Frank Vuitch +2 more
In contradistinction to other epithelial carcinomas, telomerase does not appear to be frequently reactivated in differentiated thyroid carcinomas.
PubMedPathology of neuroblastic tumors.
41 Citations1994V V Joshi, J F Silverman
Histogenesis, basic histologic features, nomenclature, and criteria for diagnosis and prognostic classifications based on morphological features of neuroblastic tumors (NTs) are described.
European Journal of CancerTelomerase expression in primary neuroblastomas
29 Citations1997C. Patrick Reynolds, Juan Zuo +5 more
The RNA component of human telomerase (hTR) was measured by Northern analyses of 150 primary untreated neuroblastomas and compared with clinical stage at diagnosis and hTR expression > 33 was seen in 41% of all tumours and the frequency of hTR > 33 increased with stage of disease.
European Journal of CancerProliferation and apoptosis in neuroblastoma: subdividing the mitosis-karyorrhexis index
26 Citations1995Carolina Gestblom, JC Hoehner +1 more
It is shown that a high cellular density of proliferating cells correlates with poor prognosis, whereas a high density of apoptosis, in contrast, indicates favourable outcome.
Methods in cell biologyChapter 22 dentification of Proliferating Cells by Ki-67 Antibody
20 Citations1990H. Baisch, Johannes Gerdes
Flow cytometry (FCM) is particularly useful to measure cells immunostained with Ki-67 and having DNA simultaneously counterstained with propidium iodide (PI), which enables to estimate Ki- 67 expression in relation to cell position in the cell cycle on a cell-by-cell basis.
Human PathologyExpression of the RNA component of telomerase in wilms tumor and nephrogenic rest recapitulates renal embryogenesis
16 Citations1998Kazuo Yashima, Anirban Maitra +5 more
The pattern of hTR expression in Wilms tumor and its precursor lesion recapitulates embryogenesis precisely and may represent that aspect of the persistent fetal phenotype which predisposes to the development of malignancy.
