3 results about "Cellular respiration" patented technology

The present invention relates to an in vitro method for predicting the response to immunotherapy treatment of hepatocellular carcinoma in a subject, comprising the following steps: 1) A step of determining the energy metabolic state of a liver tissue sample from a subject, wherein the sample comprises pathological tissue and optionally non-pathological tissue, 2) A step of detecting the presence or absence of energy conversion resulting from a reduction in mitochondrial respiration in the pathological tissue by comparing it with a liver tissue sample of the subject or a non-pathological tissue from a standard non-pathological liver sample, Here: - If mitochondrial respiration is reduced in pathological tissue, the subject is less likely to respond to immunotherapy treatment, and - If mitochondrial respiration is not reduced in the pathological tissue, the subject is highly likely to respond to immunotherapy treatment.

The invention relates to a system for determining cellular respiration and nutrient metabolism of living cells or tissues, the system comprising: a cell container configured to receive and maintain a biological sample; a gas volume in fluid communication with the cell container, the gas volume containing gaseous components produced by metabolic activity of the biological sample; an optical detection unit configured to detect a target gas species in the gas volume by wavelength-selective absorption spectroscopy, the optical detection unit being further configured to distinguish between different isotopic species of the target gas species, the optical detection unit comprising an illumination source and detector arrangement optically coupled to the optical detection unit and configured for measurement of absorption signals corresponding to different isotopes of the target gas species; and an electronic control and evaluation unit operatively connected to the optical detection unit, the electronic control and evaluation unit being configured to acquire and process absorption data, determine absolute values and / or temporal variations of the target gas species concentration and isotopic composition, and output respiration-related parameters of the biological sample. In this way, a system is provided that enables precise and efficient determination of carbon dioxide produced by living cells or tissues under physiological conditions.

The present application belongs to the technical field of plant tissue culture, and particularly relates to an active ventilation tissue culture device and a use method. The tissue culture device comprises: a gas filling pump connected with a controller to control start and stop; a gas washing bottle with sterile water inside; an air inlet pipe of the gas washing bottle connected with the gas filling pump through an air guide pipe, and the other end of the air inlet pipe extends below the liquid level of the sterile water in the bottle; a plurality of tissue culture bottles connected in series by the air guide pipes; a tissue culture bottle at the end of the series connected by the air guide pipe for air exhaust; and air filters arranged on the air guide pipes between the gas washing bottle and the gas filling pump, on the air guide pipes between the tissue culture bottles, and on the air guide pipes for air exhaust. The serially connected passages make the air in the tissue culture bottles flow, reduce the accumulation of chemical substances, regulate and control the coordination between photosynthesis and respiration of the plants, and promote the normal and healthy growth of the plants.