Table 2. Comparison of tight junction (TJ) proteins expression among different types of vascular endothelial cells.

Endothelial cells type	TJ proteins
	Cadherin-2	Cadherin-3	Cadherin-4	Cadherin-5	δ-1-Catenin	β-Catenin	α-Catenin	Occludin	Claudin-5	ZO-1	ZO-2	ZO-3
Human pulmonary artery endothelial cells (HPAECs) (Nakato et al., 2019; Chi et al., 2003; Ivanov et al., 2004; Ferreri et al., 2008; DiStefano et al., 2014; Zebda et al., 2013; Yuan et al., 2012; Wang et al., 2011)	+	−	−	+	+	+	+	+	+	+	+	−
Human umbilical vein endothelial cells (HUVECs) (Nakato et al., 2019; Chi et al., 2003; Ferreri et al., 2008; Wu et al., 2008; Dean et al., 2009; Polus et al., 2006; DeBusk et al., 2010; Wessells et al., 2009)	+	+	+	+	+	+	+	+	+	+	+	+
Human umbilical artery endothelial cells (HUAECs) (Nakato et al., 2019; Chi et al., 2003; Davis et al., 2003; Ikuno et al., 2017; Kevil et al., 1998; Kluger et al., 2013)	−	+	−	+	+	+	−	+	+	+	+	+
Human great saphenous vein endothelial cells (HGSVECs) (Nakato et al., 2019; Chi et al., 2003; Latif et al., 2006; Murakami et al., 2008)	−	−	−	+	+	−	+	+	+	+	+	+
Human common carotid artery endothelial cells (HCCaECs) (Nakato et al., 2019; Chi et al., 2003)	+	−	+	−	−	+	−	+	+	+	+	+
Human aortic endothelial cells (HAoECs) (Nakato et al., 2019; Chi et al., 2003; Wu et al., 2017; Sandig et al., 1999; DeMaio et al., 2006)	−	−	−	−	−	+	+	+	+	+	+	+
Human coronary artery endothelial cells (HCAECs) (Nakato et al., 2019; Chi et al., 2003; Wessells et al., 2009; Wu et al., 2004; Pinto et al., 2018)	−	−	+	+	+	+	+	+	+	+	+	+
Human endocardial cells (HENDCs) (Nakato et al., 2019; Chi et al., 2003; Vestweber et al., 2009; Bao et al., 2017)	+	−	−	+	−	+	+	+	+	+	−	−
Human renal artery endothelial cells (HRAECs) (Nakato et al., 2019; Chi et al., 2003; Maciel et al., 2018)	−	−	+	+	−	+	−	+	+	+	−	−