Preheat the oven to 350°F (175°C) and grease a 9-inch loaf pan.
In a mixing bowl, whisk together the flour, baking powder, baking soda, and salt.
In another bowl, cream the softened butter and sugar until light and fluffy.
Add the eggs one at a time, beating well after each addition.
Stir in vanilla extract, sour cream, lemon juice, and lemon zest.
Gradually mix in the dry ingredients until just combined.
Gently fold in the blueberries.
Pour the batter into the prepared loaf pan and smooth the top.
Bake for 55-60 minutes, or until a toothpick inserted comes out clean.
Allow the bread to cool in the pan for 10 minutes before transferring to a wire rack.