Other studies will explore how odour molecules modify taste cell
responses and, ultimately, human taste perception.
Scientists will continue study whether or not odor receptors are specially located on a specific taste cell
type, for example, sweet- or salt-detecting cells.
Some of these newly-discovered genes may help researchers to better understand how a taste cell
detects a given taste quality.
Recently, Glendinning and colleagues  suggested that salivary leptin might act at leptin receptor level present in taste cells
, in a way similar to what was reported for the satiation peptide PYY .
This sensory system is served by three nerves, each of which contains neurons that contact individual taste cells
within taste buds (Finger and Simon, 2000).
Additional studies revealed that the Lgr5cxprcssing cells were capable of becoming any one of the three major taste cell
Identification of these cells opens up a whole new area for studying taste cell
renewal, and contributes to stem cell biology in general," said senior author Peihua Jiang, Ph.D., also a Monell molecular neurobiologist.
When a gut taste cell
detects sweet, it triggers a cascade of molecular events, a simplified view of which is shown here.
The SGLT1 sensor is a transporter that moves glucose into the sweet taste cell
when sodium is present, thus triggering the cell to register sweetness.
"It makes sense that nature would have built a taste cell
like this, so as not to confuse salty with sour," she said.
"This means that the functional unit of taste now has to include not just the taste cell
, but its environment as well."
Scientists say odour sensors - usually found in the nose - were also discovered on taste cells
in the mouth.