gamma H2AX/53BP1 foci as a potential pre-treatment marker of HNSCC tumors radiosensitivity - preliminary methodological study and discussion
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F17%3A00067215" target="_blank" >RIV/00159816:_____/17:00067215 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/00216224:14110/17:00095036
Výsledek na webu
<a href="http://dx.doi.org/10.1140/epjd/e2017-80073-2" target="_blank" >http://dx.doi.org/10.1140/epjd/e2017-80073-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjd/e2017-80073-2" target="_blank" >10.1140/epjd/e2017-80073-2</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
gamma H2AX/53BP1 foci as a potential pre-treatment marker of HNSCC tumors radiosensitivity - preliminary methodological study and discussion
Popis výsledku v původním jazyce
In order to improve patients' post-treatment quality of life, a shift from surgery to non-surgical (chemo) radio-treatment is recognized in head and neck oncology. However, about half of HNSCC tumors are resistant to irradiation and an efficient marker of individual tumor radiosensitivity is still missing. We analyzed whether various parameters of DNA double strand break (DSB) repair determined in vitro can predict, prior to clinical treatment initiation, the radiosensitivity of tumors. We compared formation and decrease of gamma H2AX/53BP1 foci in 48 h after irradiating tumor cell primocultures with 2 Gy of gamma-rays. To better understand complex tumor behavior, three different cell type primocultures - CD90(-), CD90(+), and a mixed culture of these cells - were isolated from 1 clinically radioresistant, 2 radiosensitive, and 4 undetermined HPV-HNSCC tumors and followed separately. While DSB repair was delayed and the number of persisting DSBs increased in the radiosensitive tumors, the results for the radioresistant tumor were similar to cultured normal human skin fibroblasts. Hence, DSB repair kinetics/efficiency may correlate with clinical response to radiotherapy for a subset of HNSCC tumors but the size (and therefore practical relevance) of this subset remains to be determined. The same is true for contribution of different cell type primocultures to tumor radioresistance.
Název v anglickém jazyce
gamma H2AX/53BP1 foci as a potential pre-treatment marker of HNSCC tumors radiosensitivity - preliminary methodological study and discussion
Popis výsledku anglicky
In order to improve patients' post-treatment quality of life, a shift from surgery to non-surgical (chemo) radio-treatment is recognized in head and neck oncology. However, about half of HNSCC tumors are resistant to irradiation and an efficient marker of individual tumor radiosensitivity is still missing. We analyzed whether various parameters of DNA double strand break (DSB) repair determined in vitro can predict, prior to clinical treatment initiation, the radiosensitivity of tumors. We compared formation and decrease of gamma H2AX/53BP1 foci in 48 h after irradiating tumor cell primocultures with 2 Gy of gamma-rays. To better understand complex tumor behavior, three different cell type primocultures - CD90(-), CD90(+), and a mixed culture of these cells - were isolated from 1 clinically radioresistant, 2 radiosensitive, and 4 undetermined HPV-HNSCC tumors and followed separately. While DSB repair was delayed and the number of persisting DSBs increased in the radiosensitive tumors, the results for the radioresistant tumor were similar to cultured normal human skin fibroblasts. Hence, DSB repair kinetics/efficiency may correlate with clinical response to radiotherapy for a subset of HNSCC tumors but the size (and therefore practical relevance) of this subset remains to be determined. The same is true for contribution of different cell type primocultures to tumor radioresistance.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
30204 - Oncology
Návaznosti výsledku
Projekt
<a href="/cs/project/GA16-12454S" target="_blank" >GA16-12454S: Charakterizace a modifikace komplexní odpovědi buněk nádorů hlavy a krku na různá záření - krok kupředu ke kombinované personalizované (radio)terapii</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
European Physical Journal D
ISSN
1434-6060
e-ISSN
—
Svazek periodika
71
Číslo periodika v rámci svazku
9
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
7
Strana od-do
—
Kód UT WoS článku
000411083200015
EID výsledku v databázi Scopus
—