Ampk Mtor Pathway
Ampk Mtor Pathway - Related Videos
01:22
PI3K/mTOR/AKT Signaling Pathway
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2023
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a rapamycin-insensitive companion...
03:03
mTOR Signaling and Cancer Progression
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2023
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors. The mTOR pathway or the...
03:03
mTOR Signaling and Cancer Progression
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2021
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors. The mTOR pathway or the...
01:26
Respiration Pathways
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2025
Cellular respiration is a fundamental metabolic process that enables organisms to generate energy from organic molecules. One of its central pathways is the tricarboxylic acid (TCA) cycle, also known as the Krebs cycle, which plays a crucial role in energy production and biosynthetic processes.Conversion of Pyruvate to Acetyl-CoAThe pyruvate generated from glycolysis undergoes oxidative decarboxylation by the pyruvate dehydrogenase complex, producing acetyl-CoA, one molecule of NADH, and one...
01:15
Auditory Pathway
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2024
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea. When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
FAQs
When ATP falls and AMP rises, AMPK becomes activated. It restrains mTORC1 through mechanisms involving TSC2 and raptor, reducing growth-oriented signaling that would consume scarce resources. This shift favors conservation and supports energy-producing processes, linking the cell’s energy state to decisions about biosynthesis and growth.
mTORC1 responds to nutrients and growth signals by activating S6K and 4E-BP1, downstream effectors associated with increased protein synthesis. At the same time, it suppresses autophagy. These coordinated effects support biosynthetic activity when cellular conditions favor growth rather than resource conservation.
These signals favor different priorities: AMPK activation restrains mTORC1 when energy is limited, whereas nutrient and growth signaling activates mTORC1. The resulting balance helps determine whether cellular resources support energy-producing processes or growth-related biosynthesis. In medicine, this relationship connects metabolic state with disease-associated changes in cellular behavior.
mTORC1 activity suppresses autophagy, connecting nutrient and growth signals to this cellular response. Because AMPK can restrain mTORC1 during low-energy conditions, the pathway links energy sensing with whether biosynthetic growth signals remain active or are reduced. This connection is relevant when interpreting altered cellular metabolism in disease biology.
Changes in S6K and 4E-BP1 signaling reveal how mTORC1 is influencing protein synthesis, while autophagy provides a complementary outcome. Considering these outputs together reflects the network’s coordinated effects on biosynthesis, growth signaling, and resource conservation. These downstream responses therefore support mechanistic studies of the pathway in medicine.
Research on this pathway is relevant to cancer, diabetes, metabolic disorders, and neurodegeneration. These areas involve questions about cellular growth, energy use, nutrient handling, or biosynthetic activity. Studying AMPK-mTOR signaling helps investigators relate those disease contexts to changes in the balance between energy availability and growth-promoting processes.
Therapeutic strategies can be designed around adjusting cellular growth or energy metabolism, depending on the disease context. The rationale comes from the pathway’s opposing control of resource conservation, biosynthesis, and autophagy. This approach supports investigation across cancer, diabetes, metabolic disorders, and neurodegeneration, where growth-energy balance may be clinically relevant.