J 2014

Frequent mutation of receptor protein tyrosine phosphatases provides a mechanism for STAT3 hyperactivation in head and neck cancer

LUI, Vivian Way Y.; Noah D. PEYSER; Patrick KS NG; Jozef HRITZ; Yan ZENG et. al.

Základní údaje

Originální název

Frequent mutation of receptor protein tyrosine phosphatases provides a mechanism for STAT3 hyperactivation in head and neck cancer

Autoři

LUI, Vivian Way Y.; Noah D. PEYSER; Patrick KS NG; Jozef HRITZ; Yan ZENG; Yiling LU; Hua LI; Lins WANG; Breean R. GILBERT; Ignacio J. GENERAL; Ivet BAHAR; Zhenlin JU; Zhenghe WANG; Kelsey P. PENDLETON; Xiao XIAO; Yu DU; John K. VRIES; Peter S. HAMMERMAN; Levi A. GARRAWAY; Gordon B. MILLS; Dean Kim JOHNSON a Jennifer R. GRANDIS

Vydání

Proceedings of the National Academy of Sciences of the United States of America, WASHINGTON, NATL ACAD SCIENCES, 2014, 0027-8424

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30000 3. Medical and Health Sciences

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 9.674

Kód RIV

RIV/00216224:14740/14:00075085

Organizační jednotka

Středoevropský technologický institut

UT WoS

000329928400059

EID Scopus

2-s2.0-84892928970

Klíčová slova anglicky

STAT3 activation; driver mutations; phosphatase mutations

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 17. 10. 2014 12:49, Martina Prášilová

Anotace

V originále

The underpinnings of STAT3 hyperphosphorylation resulting in enhanced signaling and cancer progression are incompletely understood. Loss-of-function mutations of enzymes that dephosphorylate STAT3, such as receptor protein tyrosine phosphatases, which are encoded by the PTPR gene family, represent a plausible mechanism of STAT3 hyperactivation. We analyzed whole exome sequencing (n = 374) and reverse-phase protein array data (n = 212) from head and neck squamous cell carcinomas (HNSCCs). PTPR mutations are most common and are associated with significantly increased phospho-STAT3 expression in HNSCC tumors. Expression of receptor-like protein tyrosine phosphatase T (PTPRT) mutant proteins induces STAT3 phosphorylation and cell survival, consistent with a "driver" phenotype. Computational modeling reveals functional consequences of PTPRT mutations on phospho-tyrosine-substrate interactions. A high mutation rate (30%) of PTPRs was found in HNSCC and 14 other solid tumors, suggesting that PTPR alterations, in particular PTPRT mutations, may define a subset of patients where STAT3 pathway inhibitors hold particular promise as effective therapeutic agents.