RESEARCH: CANCER
FOLDING PROJECT #15213 PROFILE

The project looks at how PTCH1 moves cholesterol around in cells. PTCH1 normally stops a growth signal (called SMO) when there's no special signal (SHH). If PTCH1 doesn't work right, it can cause cancers like medulloblastoma and basal cell carcinoma. Understanding this process could lead to new cancer treatments.

Note: This TLDR is a simplication and may not be 100% accurate.

This project aims to elucidate the cholesterol transport mechanism in PTCH1, a transmembrane protein responsible for inhibiting SMO in the absence of SHH in the hedgehog signaling pathway by reducing access to ciliary membrane cholesterol.

Dysregulation of this pathway (such as the inability of PTCH1 to transport cholesterol and thereby inhibit SMO) has been linked to various cancers, including medulloblastoma and basal cell carcinoma.

Thus, understanding the mechanisms behind PTCH1 cholesterol transport will allow for therapeutic treatments to target these cancers.

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PTCH1

Patched homolog 1

PTCH1 is a gene that provides instructions for making a protein called patched. This protein plays a crucial role in the hedgehog signaling pathway, which is essential for cell growth and development. When cholesterol isn't transported properly by PTCH1, it can lead to problems with this pathway, potentially contributing to cancer.

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SMO

Smoothened

SMO is a protein that acts as a key component in the hedgehog signaling pathway. It's activated when cholesterol is available and helps regulate cell growth and development. Dysregulation of SMO can contribute to cancer.

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SHH

Sonic hedgehog

SHH is a signaling molecule that plays a vital role in embryonic development and tissue regeneration. It binds to PTCH1, triggering the hedgehog signaling pathway, which influences cell growth and differentiation.

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hedgehog signaling pathway

A cascade of cellular events that regulates cell growth and differentiation

The hedgehog signaling pathway is a complex network of interactions within cells. It's activated by the binding of SHH to PTCH1, leading to downstream effects on gene expression and ultimately influencing cell behavior. This pathway plays a crucial role in development and tissue maintenance but can be disrupted in diseases like cancer.

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cholesterol transport

The movement of cholesterol molecules within cells and between cells.

Cholesterol transport is essential for various cellular processes, including cell membrane integrity and signaling pathways. The movement of cholesterol can be regulated by proteins like PTCH1, which plays a role in the hedgehog signaling pathway.

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medulloblastoma

An aggressive type of brain tumor that originates in the cerebellum.

Medulloblastoma is a cancerous growth in the cerebellum, a part of the brain responsible for coordination and balance. It's often diagnosed in children and can be very aggressive. Understanding the role of PTCH1 in cholesterol transport and its link to medulloblastoma may lead to new treatment strategies.

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basal cell carcinoma

The most common type of skin cancer, arising from the basal cells.

Basal cell carcinoma is a type of skin cancer that originates in the basal layer of the epidermis. It's often slow-growing and treatable, but understanding its connection to PTCH1 and cholesterol transport may provide insights into prevention and treatment strategies.