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The E2F1–HOXB9/PBX2–CDK6 axis drives gastric tumorigenesis and serves as a therapeutic target in gastric cancer
The Journal of pathology, 2023-08, Vol.260 (4), p.402-416
Zhang, Jinglin
Chen, Bonan
Wang, Yifei
Liu, Xiaoli
Yan, Huan
Wong, Kit Yee
Chan, Aden KY
Cheung, Alvin HK
Chow, Chit
Xu, Dazhi
Wang, Shouyu
Huang, Bing
Liang, Li
Ke, Huixing
Wong, Chi Chun
Wu, William KK
Cheng, Alfred SL
Yu, Jun
Lo, Kwok Wai
To, Ka Fai
Kang, Wei
2023
Details
Autor(en) / Beteiligte
Zhang, Jinglin
Chen, Bonan
Wang, Yifei
Liu, Xiaoli
Yan, Huan
Wong, Kit Yee
Chan, Aden KY
Cheung, Alvin HK
Chow, Chit
Xu, Dazhi
Wang, Shouyu
Huang, Bing
Liang, Li
Ke, Huixing
Wong, Chi Chun
Wu, William KK
Cheng, Alfred SL
Yu, Jun
Lo, Kwok Wai
To, Ka Fai
Kang, Wei
Titel
The E2F1–HOXB9/PBX2–CDK6 axis drives gastric tumorigenesis and serves as a therapeutic target in gastric cancer
Ist Teil von
The Journal of pathology, 2023-08, Vol.260 (4), p.402-416
Ort / Verlag
Chichester, UK: John Wiley & Sons, Ltd
Erscheinungsjahr
2023
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Homeobox genes include HOX and non‐HOX genes. HOX proteins play fundamental roles during ontogenesis by interacting with other non‐HOX gene‐encoded partners and performing transcriptional functions, whereas aberrant activation of HOX family members drives tumorigenesis. In this study, gastric cancer (GC) expression microarray data indicated that HOXB9 is a prominent upregulated HOX member in GC samples significantly associated with clinical outcomes and advanced TNM stages. However, the functional role of HOXB9 in GC remains contradictory in previous reports, and the regulatory mechanisms are elusive. By in silico and experimental analyses, we found that HOXB9 was upregulated by a vital cell cycle‐related transcription factor, E2F1. Depleting HOXB9 causes G1‐phase cell cycle arrest by downregulating CDK6 and a subset of cell cycle‐related genes. Meanwhile, HOXB9 contributes to cell division and maintains the cytoskeleton in GC cells. We verified that HOXB9 interacts with PBX2 to form a heterodimer, which transcriptionally upregulates CDK6. Knocking down CDK6 can phenocopy the tumor‐suppressive effects caused by HOXB9 depletion. Blocking HOXB9 can enhance the anti‐tumor effect of CDK6 inhibitors. In conclusion, we elucidate the oncogenic role of HOXB9 in GC and reveal CDK6 as its potent downstream effector. The E2F1–HOXB9/PBX2–CDK6 axis represents a novel mechanism driving gastric carcinogenesis and conveys prognostic and therapeutic implications. © 2023 The Pathological Society of Great Britain and Ireland.
Sprache
Englisch
Identifikatoren
ISSN: 0022-3417
eISSN: 1096-9896
DOI: 10.1002/path.6091
Titel-ID: cdi_proquest_miscellaneous_2822708091
Format
–
Schlagworte
Carcinogenesis
,
Carcinogenesis - pathology
,
CDK6
,
Cell cycle
,
Cell division
,
Cell Line, Tumor
,
Cell Proliferation - physiology
,
Cell Transformation, Neoplastic - genetics
,
Cytoskeleton
,
DNA microarrays
,
E2F1
,
E2F1 Transcription Factor - genetics
,
E2F1 Transcription Factor - metabolism
,
Gastric cancer
,
Gene Expression Regulation, Neoplastic
,
Genes, Homeobox
,
Homeobox
,
Homeodomain Proteins - genetics
,
Homeodomain Proteins - metabolism
,
HOX gene
,
HOXB9
,
Humans
,
PBX2
,
Proto-Oncogene Proteins - genetics
,
Stomach cancer
,
Stomach Neoplasms - pathology
,
Therapeutic targets
,
Transcription Factors - genetics
,
Tumorigenesis
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