PMID- 35264069 OWN - NLM STAT- MEDLINE DCOM- 20220408 LR - 20220606 IS - 2165-5987 (Electronic) IS - 2165-5979 (Print) IS - 2165-5979 (Linking) VI - 13 IP - 3 DP - 2022 Mar TI - C-X-C motif chemokine ligand 12 (CXCL12)/C-X-C motif chemokine receptor 7(CXCR7) regulates epithelial-mesenchymal transition process and promotes the metastasis of esophageal cancer by activating signal transducer and activator of transcription 3 (STAT3) pathway. PG - 7425-7438 LID - 10.1080/21655979.2022.2048984 [doi] AB - Esophageal cancer is a malignant tumor of the digestive system that is prone to metastasis. Chemokines and their receptors act an essential role in the occurrence and development of tumors. Here, we investigated the regulatory mechanism of CXCL12/CXCR7 in the growth and metastasis of esophageal cancer. CXCR7 was found highly expressed in clinical tissues and cells of esophageal cancer. Knockdown of CXCR7 inhibited the proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT) process of esophageal cancer cells. The knockdown of chemokine CXCL12 also inhibited the expression of EMT-related proteins and the mesenchymal morphology changes of esophageal cancer cells, but the knockdown of C-X-C motif chemokine receptor 4 (CXCR4) had no such effect. Furthermore, the knockdown of CXCR7 attenuated the enhanced EMT process induced by CXCL12 overexpression, while the knockdown of CXCR4 cannot inhibit this process. In addition, overexpressed CXCL12/CXCR7 activated the downstream STAT3 pathway, but had little effect on the extracellular regulated protein kinase (ERK) or serine-threonine kinase (AKT) pathways. Inhibition of the STAT3 pathway using AZD9150 weakened the accelerated effects of CXCL12/CXCR7 on the growth and metastasis of esophageal cancer in vitro and in vivo. In conclusion, our research revealed that CXCL12/CXCR7 regulates EMT and other malignant processes by activating the STAT3 pathway to accelerate the growth and metastasis of esophageal cancer. FAU - Guo, Jing AU - Guo J AUID- ORCID: 0000-0001-9050-4947 AD - Department of Thoracic Surgery, Ningbo First Hospital, Ningbo, Zhejiang province, China. FAU - Tong, Chang-Yong AU - Tong CY AD - Department of Thoracic Surgery, Ningbo First Hospital, Ningbo, Zhejiang province, China. FAU - Shi, Jian-Guang AU - Shi JG AD - Department of Thoracic Surgery, Ningbo First Hospital, Ningbo, Zhejiang province, China. FAU - Li, Xin-Jian AU - Li XJ AD - Department of Thoracic Surgery, Ningbo First Hospital, Ningbo, Zhejiang province, China. LA - eng PT - Journal Article PL - United States TA - Bioengineered JT - Bioengineered JID - 101581063 RN - 0 (ACKR3 protein, human) RN - 0 (CXCL12 protein, human) RN - 0 (Chemokine CXCL12) RN - 0 (Ligands) RN - 0 (Receptors, CXCR) RN - 0 (STAT3 Transcription Factor) RN - 0 (STAT3 protein, human) SB - IM MH - Cell Line, Tumor MH - Chemokine CXCL12/genetics/metabolism/pharmacology MH - Epithelial-Mesenchymal Transition/genetics MH - *Esophageal Neoplasms/genetics MH - Humans MH - Ligands MH - *Receptors, CXCR/genetics MH - STAT3 Transcription Factor/genetics/metabolism PMC - PMC8973702 OTO - NOTNLM OT - CXCL12 OT - CXCR7 OT - Esophageal cancer OT - epithelial-mesenchymal transition OT - tumor metastasis COIS- No potential conflict of interest was reported by the author(s). EDAT- 2022/03/11 06:00 MHDA- 2022/04/09 06:00 PMCR- 2022/03/09 CRDT- 2022/03/10 05:32 PHST- 2022/03/10 05:32 [entrez] PHST- 2022/03/11 06:00 [pubmed] PHST- 2022/04/09 06:00 [medline] PHST- 2022/03/09 00:00 [pmc-release] AID - 2048984 [pii] AID - 10.1080/21655979.2022.2048984 [doi] PST - ppublish SO - Bioengineered. 2022 Mar;13(3):7425-7438. doi: 10.1080/21655979.2022.2048984.