Junctional adhesion molecules mediate transendothelial migration of dendritic cell vaccine in cancer immunotherapy

• Published in: Cancer letters Vol. 434; pp. 196 - 205
• Main Authors: Roh, Seung-Eon, Jeong, Yideul, Kang, Myeong-Ho, Bae, Yong-Soo
• Format: Journal Article
• Language: English
• Published: Ireland Elsevier B.V 10-10-2018; Elsevier Limited
• Subjects: Adhesion; Antigens; Bone marrow; Cancer; Cancer immunotherapy; Cancer vaccines; Cell adhesion & migration; Cell adhesion molecules; DC immunotherapy; Dendritic cells; Endothelial cells; Human monocyte-derived dendritic cells (MoDCs); Immunoglobulins; Immunotherapy; Inoculation; JAM; JAML; Leukocyte migration; Lymph nodes; Monocytes; Mouse bone marrow-derived dendritic cells (BMDCs); Neutrophils; Penicillin; Proteins; TEM; Tumor necrosis factor-TNF; Vaccines; United States > US; South Korea; LN; MoDC; Mouse bone marrow-derived dendritic cells (BMDCs); DC immunotherapy; CCL; mDC; LPS; pDC; imDC; CCR; IgSF; Human monocyte-derived dendritic cells (MoDCs); JAML; APC; BMDC; CAR; GM-CSF; JAM; HUVEC; CTL; TEM; DC
• ISSN: 0304-3835; 1872-7980
• DOI: 10.1016/j.canlet.2018.07.029

In vitro generated dendritic cells (DCs) have been studied in cancer immunotherapy for decades. However, the detailed molecular mechanism underlying transendothelial migration (TEM) of DC vaccine across the endothelial barrier to regional lymph nodes (LNs) remains largely unknown. Here, we found that junctional adhesion molecule (JAM)-Like (JAML) is involved in the TEM of mouse bone marrow-derived DCs (BMDCs). Treatment with an anti-JAML antibody or JAML knock-down significantly reduced the TEM activity of BMDCs, leading to impairment of DC-based cancer immunotherapy. We found that the interaction of JAML of BMDCs with the coxsackie and adenovirus receptor of endothelial cells plays a crucial role in the TEM of BMDCs. On the other hand, human monocyte-derived DCs (MoDCs) did not express the JAML protein but still showed normal TEM activity. We found that MoDCs express only JAM1 and that the homophilic interaction of JAM1 is essential for MoDC TEM across a HUVEC monolayer. Our findings suggest that specific JAM family members play an important role in the TEM of in vitro-generated mouse and human DCs from the inoculation site to regional LNs in DC-based cancer immunotherapy.
•JAML is involved in the TEM of mouse bone marrow-derived dendritic cells (BMDC).•JAML of BMDCs interacts with CAR of endothelial cells for the TEM of BMDCs.•DC-based tumor immunotherapy was significantly impaired by JAML blockades.•Human monocyte-derived DCs (MoDCs) do not express JAML, but have a TEM activity.•MoDC TEM across the endothelial barrier needs the hemophilic interaction of JAM1.