TY - JOUR
T1 - Evidence that cervical cancer cells cultured as tumorspheres maintain high CD73 expression and increase their protumor characteristics through TGF-β production
AU - García-Rocha, Rosario
AU - Monroy-García, Alberto
AU - Carrera-Martínez, Monserrat
AU - Hernández-Montes, Jorge
AU - Don-López, Christian Azucena
AU - Weiss-Steider, Benny
AU - Monroy-Mora, Katia Alhelí
AU - Ponce-Chavero, María de los Ángeles
AU - Montesinos-Montesinos, Juan José
AU - Escobar-Sánchez, María Luisa
AU - Castillo, Gabriela Molina
AU - Chacón-Salinas, Rommel
AU - Vallejo-Castillo, Luis
AU - Pérez-Tapia, Sonia Mayra
AU - Mora-García, María de Lourdes
N1 - Publisher Copyright:
© 2022 The Authors. Cell Biochemistry and Function published by John Wiley & Sons Ltd.
PY - 2022/10
Y1 - 2022/10
N2 - Recently, a link between the biological activity of CD73 and tumorigenicity in solid tumors has been proposed. We previously reported that the generation of adenosine (Ado) by the activity of CD73 in cervical cancer (CC) cells induces transforming growth factor-beta 1 (TGF-β1) production to maintain CD73 expression. In the present study, we analyzed the participation of TGF-β1 in CD73 expression and the development of protumoral characteristics in CaSki CC cells cultured as tumorspheres (CaSki-T) and in monolayers (CaSki-M). Compared with those in CaSki-M cells, CD73 expression and Ado generation ability were significantly increased in CaSki-T cells. CaSki-T cells exhibited enrichment in the CSC-like phenotype due to increases in the expression levels of stem cell markers (CD49f, CK17, and P63; OCT4 and SOX2), greater sphere formation efficiency (SFE), and an increase in the percentage of side population (SP) cells. Interestingly, compared with CaSki-M cells, CaSki-T cells produced a greater amount of TGF-β1 and presented a marked protumor phenotype characterized by a significant decrease in the expression of major histocompatibility complex class-I (MHC-I) molecules, an increase in the expression of multidrug resistance protein-I (MRP-I) and vimentin, and an increase in the protein expression levels of Snail-1 and Twist, which was strongly reversed with TGF-β1 inhibition. These results suggest that the presence of TGF-β1−CD73–Ado feedback loop can promote protumoral characteristics in the CC tumor microenvironment.
AB - Recently, a link between the biological activity of CD73 and tumorigenicity in solid tumors has been proposed. We previously reported that the generation of adenosine (Ado) by the activity of CD73 in cervical cancer (CC) cells induces transforming growth factor-beta 1 (TGF-β1) production to maintain CD73 expression. In the present study, we analyzed the participation of TGF-β1 in CD73 expression and the development of protumoral characteristics in CaSki CC cells cultured as tumorspheres (CaSki-T) and in monolayers (CaSki-M). Compared with those in CaSki-M cells, CD73 expression and Ado generation ability were significantly increased in CaSki-T cells. CaSki-T cells exhibited enrichment in the CSC-like phenotype due to increases in the expression levels of stem cell markers (CD49f, CK17, and P63; OCT4 and SOX2), greater sphere formation efficiency (SFE), and an increase in the percentage of side population (SP) cells. Interestingly, compared with CaSki-M cells, CaSki-T cells produced a greater amount of TGF-β1 and presented a marked protumor phenotype characterized by a significant decrease in the expression of major histocompatibility complex class-I (MHC-I) molecules, an increase in the expression of multidrug resistance protein-I (MRP-I) and vimentin, and an increase in the protein expression levels of Snail-1 and Twist, which was strongly reversed with TGF-β1 inhibition. These results suggest that the presence of TGF-β1−CD73–Ado feedback loop can promote protumoral characteristics in the CC tumor microenvironment.
KW - CD73
KW - TGF-β 1
KW - cancer stem-like (CSC-like) cells
KW - cervical cancer
KW - protumor phenotype
KW - tumorspheres
UR - http://www.scopus.com/inward/record.url?scp=85137512681&partnerID=8YFLogxK
U2 - 10.1002/cbf.3742
DO - 10.1002/cbf.3742
M3 - Artículo
C2 - 36070413
AN - SCOPUS:85137512681
SN - 0263-6484
VL - 40
SP - 760
EP - 772
JO - Cell Biochemistry and Function
JF - Cell Biochemistry and Function
IS - 7
ER -