PMID- 34975297 OWN - NLM STAT- MEDLINE DCOM- 20220323 LR - 20220323 IS - 1449-1907 (Electronic) IS - 1449-1907 (Linking) VI - 19 IP - 1 DP - 2022 TI - Human alpha-defensin 6 (HD6) suppresses CRC proliferation and metastasis through abolished EGF/EGFR signaling pathway. PG - 34-46 LID - 10.7150/ijms.64850 [doi] AB - The incidence of colorectal cancer (CRC) has increased significantly in the past decade. Early diagnosis and new therapeutics are still urgently needed for CRC in clinical practice. Human alpha-defensin 6 (HD6) plays a defense role against microbes in the gastrointestinal tract. However, the role and mechanism of HD6 in CRC is still unresolved. Specimens from CRC patients with higher HD6 showed better outcomes. Overexpressed HD6 in CRC cells caused a reduction of cell proliferative, migratory, and invasive ability in vitro and in vivo. HD6-overexpressed caused S phase arrest through changes in cyclin-A and B and CDK2 levels. In addition, serpine-1 may be negatively regulated by HD6 altering the translocation of c-Jun N-terminal kinases (JNK), extracellular regulated protein kinases (ERK), and p38. Higher HD6 and lower serpine-1 levels in CRC patients reflected better outcomes. Finally, we found that HD6 interacts directly with epidermal growth factor receptor (EGFR) by co-immunoprecipitated assay. EGF treatment caused an increase of the level of serpine-1 and pEGFR levels and then increased growth activity in HD6 overexpressing cells. Together, our study shows that HD6 may compete with EGF to bind to EGFR and interrupt cancer progression in CRC. We believe these findings may give new insights for HD6 in CRC therapy. CI - (c) The author(s). FAU - Wei, Po-Li AU - Wei PL AD - Division of Colorectal Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan. AD - Department of Surgery, College of Medicine, School of Medicine, Taipei Medical University, Taipei, Taiwan. AD - Cancer Research Center and Translational Laboratory, Department of Medical Research, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan. AD - Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan. FAU - Lin, Jang-Chun AU - Lin JC AD - Department of Radiation Oncology, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan. AD - Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. FAU - Hung, Chin-Sheng AU - Hung CS AD - Department of Surgery, College of Medicine, School of Medicine, Taipei Medical University, Taipei, Taiwan. FAU - Makondi, Precious Takondwa AU - Makondi PT AD - Kamuzu Central Hospital - National Cancer Center, Lilongwe, Malawi. FAU - Batzorig, Uyanga AU - Batzorig U AD - Department of Surgery, College of Medicine, School of Medicine, Taipei Medical University, Taipei, Taiwan. FAU - Chang, Tung-Cheng AU - Chang TC AD - Department of Surgery, College of Medicine, School of Medicine, Taipei Medical University, Taipei, Taiwan. AD - Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan. AD - Division of Colon and Rectal, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan. FAU - Huang, Chien-Yu AU - Huang CY AD - Department of Surgery, College of Medicine, School of Medicine, Taipei Medical University, Taipei, Taiwan. AD - Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan. AD - Division of Colon and Rectal, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan. FAU - Chang, Yu-Jia AU - Chang YJ AD - Graduate Institute of Clinical Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan. AD - Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan. AD - Department of Pathology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan. LA - eng PT - Journal Article DEP - 20220101 PL - Australia TA - Int J Med Sci JT - International journal of medical sciences JID - 101213954 RN - 0 (Biomarkers, Tumor) RN - 0 (DEFA6 protein, human) RN - 0 (Plasminogen Activator Inhibitor 1) RN - 0 (SERPINE1 protein, human) RN - 0 (alpha-Defensins) RN - 62229-50-9 (Epidermal Growth Factor) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Animals MH - Biomarkers, Tumor MH - Cell Cycle Checkpoints MH - Cell Proliferation MH - Colorectal Neoplasms/*metabolism/*pathology MH - Disease Models, Animal MH - Epidermal Growth Factor/genetics/*metabolism MH - Epithelial-Mesenchymal Transition/physiology MH - ErbB Receptors/genetics/metabolism MH - Gene Expression MH - Humans MH - Kaplan-Meier Estimate MH - Mice MH - Neoplasm Invasiveness MH - Neoplasm Metastasis MH - Plasminogen Activator Inhibitor 1/metabolism MH - S Phase/physiology MH - Tumor Cells, Cultured MH - alpha-Defensins/genetics/*metabolism PMC - PMC8692109 OTO - NOTNLM OT - Colon cancer OT - EGF OT - EGFR OT - defensin6 OT - migration OT - progression OT - serpine-1 COIS- Competing Interests: The authors have declared that no competing interest exists. EDAT- 2022/01/04 06:00 MHDA- 2022/03/24 06:00 PMCR- 2022/01/01 CRDT- 2022/01/03 05:34 PHST- 2021/07/12 00:00 [received] PHST- 2021/11/02 00:00 [accepted] PHST- 2022/01/03 05:34 [entrez] PHST- 2022/01/04 06:00 [pubmed] PHST- 2022/03/24 06:00 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - ijmsv19p0034 [pii] AID - 10.7150/ijms.64850 [doi] PST - epublish SO - Int J Med Sci. 2022 Jan 1;19(1):34-46. doi: 10.7150/ijms.64850. eCollection 2022.