Table 2 Conditional deletion of Piezo1 in experimental mice
From: Roles of mechanosensitive channel Piezo1/2 proteins in skeleton and other tissues
Tissue type | Cre | Phenotype | Mechanism |
|---|---|---|---|
Global deletion | Embryos died at E9.5 lacking modeling of vasculature | Impaired endothelial cell alignment in response to shear stress; failing to remodel arteries | |
Endothelial cells | Cadherin5-CreERT2181 | Inhibited Ca2+ influx induced by Yoda1; more sensitive to α-adrenergic agonists |  |
| Â | Cadherin5-CreERT2137 | Impaired physical performance and lower body weight after sustained activity | Piezo1 transduced fluid flow signal to constriction of mesenteric arteries, which are responsible for total peripheral resistance |
| Â | iEC-Cre132 | Increased lung vascular permeability by high-volume mechanical ventilation | Piezo1 targeted calcium-dependent cysteine protease calpain to maintain homeostasis of the endothelial barrier |
| Â | iEC-Cre133 | Increased lung microvessel pressure; impaired regulation of lung endothelial barrier | Piezo1 regulated lung vascular permeability by targeting endothelial VE-cadherin |
| Â | Tie2-Cre or Lyve1-Cre134 | Reduced amount of lymphatic valves | Â |
| Â | Tie2-CreERT2138 | Upregulated arterial blood pressure | Failed to produce NO or vasodilate because of insensitivity to flow stimulation |
Adult endothelial cells | SCL-CreERT136 | Impaired angiogenesis; inhibited endothelial sprouting and lumen formation after subjected to wall shear stress | Piezo1 increased intracellular Ca2+ and activated MT1-MMP pathway |
Lymphatic endothelial cells | Prox1-CreERT2135 | Inhibited formation and maintenance of lymphatic valves and lymphatic vessels | Piezo1 transduced the signal of OSS to control lymphatic valves and lymphatic vessels |
Smooth muscle cells | sm22-Cre14 | Reduced activity of ion channels in caudal artery myocytes induced by stretch; reduced arterial diameter, wall thickness, and cross-sectional area treated with Angiotensin II | Piezo1 sensed flow and pressure to regulate structural remodeling of arteries |
Adipocytes | Adiponectin-Cre141 | Increased insulin resistance; decreased pgWAT weight and increased pro-inflammatory and lipolysis genes after HFD fed; hepatic steatosis with increased fatty acid synthesis genes | Piezo1 participated in TLR4-mediated inflammation |
| Â | Adiponectin-CreERT2140 | Impaired adipocyte differentiation, causing inflammation and insulin insensitivity | Piezo1 promoted the secretion of adipogenic FGF1 to facilitate adipocyte precursor differentiation |
Myeloid cells | LysM-Cre143 | Ameliorated pulmonary inflammation | Piezo1 exhibited proinflammatory effects by activating AP-1c and EDN1 and stabilizing HIF1α |
Acinar cells | Ptf1a-CreER142 | Ameliorated pancreatitis, including reduced edema, neutrophil infiltration, hemorrhage, and tissue necrosis | Piezo1 activated cytoplasmic calcium signals that are toxic to pancreatic acinar cells, resulting in cellular necrosis and pancreatitis |
Nodose and petrosal sensory ganglia neurons | Phox2b-Cre Piezo1/2 dKO156 | Attenuated baroreflex and activity of aortic depressor nerve | Â |
DRG neurons | shRNA KD159 | Inhibited Ca2+ influx induced by Yoda1 | The mechanism is still unclear whether targeting Ca2+ -induced phospholipase C δ, β, or other signaling pathways |