HEATR1 promotes proliferation in gastric cancer in vitro and in vivo.

Abstract:

:HEAT repeat-containing protein 1 (HEATR1) is related to the progression of several cancers. However, the role of HEATR1 in gastric cancer (GC) remains unknown. In the present study, we aimed to detect the expression of HEATR1 in GC and identify its role. The expressions of HEATR1 in GC tissues were analyzed using The Cancer Genome Atlas database and by western blot analysis and immunohistochemistry. Furthermore, the HEATR1 expressions in GC cell lines MGC-803 and AGS were knocked down by using lentivirus-mediated HEATR1 shRNA. Cell proliferation and apoptosis were detected by CCK-8 and Caspase-Glo® 3/7 assays, respectively. PathScan® Signaling Antibody Array kit and Kyoto Encyclopedia of Genes and Genomes enrichment were used to study the pathways related to HEATR1. The influence of HEATR1 shRNA on the in vivo growth of GC cells was assessed by establishing a nude mouse xenograft model and conducting bioluminescence imaging. Our results showed that HEATR1 was highly expressed in GC tissues. Higher expression of HEATR1 is related to cancer progression and metastasis. Knocking down HEATR1 significantly suppressed the cell proliferation and colony formation and promoted cell apoptosis. The expression levels of phosphorylated p53, p38 MAPK, Chk2, and IKBa in shHEATR1-transfected MGC-803 cells exceeded those in shCtrl-transfected cells. HEATR1 shRNA treatment also significantly inhibited tumor growth in the mouse model. This study suggested that HEATR1 may be an oncogene and a target for GC therapy.

authors

Zhao J,Zhu Y,Fu Q,Zhu Y,Zhao G

doi

10.1093/abbs/gmaa077

subject

Has Abstract

pub_date

2020-09-08 00:00:00

pages

1030-1039

issue

9

eissn

1672-9145

issn

1745-7270

pii

5867298

journal_volume

52

pub_type

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